CN100449885C - Rotating connector - Google Patents

Abstract

In the rotating connector wherein the rotor having the inner tube is rotatably coupled with the stator having the outer tube, and the flat cable is contained in the annular space defined between the outer tube and the inner tube winding direction of which is inversed at the intermediate section, and the intermediate inverting section of the flat cable is passed through the opening of the holder that is rotatably arranged in the annular space, the guiding wall having the outer surface eccentric to the rotating axis of the rotor is provided on the annular flat plate of the holder, and the flat cable is wound on the outer surface of the guiding wall in the wound-back state.

Description

Rotary connector

Technical field

The present invention relates to be assembled in the transfer of automobile and as the rotary connector of the arrangements of electric connection of gas-bag system etc., relate in particular between rotor and stator in the formed annulus flat cable by counter-rotating portion the reverse rotary connector of coiling.

Background technology

Rotary connector, be that one in a pair of shell that connects to the state freely of rotating is used as rotor, another uses as stator, installation and coiling flat cable are made between this rotor and stator, as the transfer of automobile, use as the arrangements of electric connection of mounted airbag system of institute on the limited steering wheel of rotating speed etc.Above-mentioned flat cable is the shoestring with a plurality of conductors, and known rotary connector type has: this flat cable is wound into gyrate Scrawl and counter steer and the counter-rotative type of oppositely reeling halfway.A kind of counter-rotative type in back can shorten the length of required flat cable.

Past, known this counter-rotative type rotary connector, between rotor and stator, in the formed annulus flat cable is installed, and make it be formed on the state of the coiling direction that overturns midway, in this annulus, the support that a plurality of rotors is carried out the axle supporting is configured to rotate state freely, simultaneously, make the counter-rotating portion of flat cable on a rotor, form ring-type (for example, with reference to patent documentation 1).The rotary connector of Gou Chenging like this, if rotor is rotated to positive and negative some directions with respect to stator, then flat cable is exported from the urceolus portion of stator, rolling-in on the inner cylinder portion of rotor, perhaps in contrast, flat cable is wound up in the urceolus portion from inner cylinder portion output.At this moment the counter-rotating portion of flat cable moves to equidirectional according to coming than the little rotation amount of rotor, and follows the tracks of this counter-rotating portion and support is also moved to same direction, and the flat cable of about 2 double-length degree of this amount of movement is from urceolus portion or inner cylinder portion output.And a plurality of rotors that utilize support to carry out the axle supporting limit moving radially of flat cable, so can successfully export flat cable on the direction of counter-rotating portion.

＜patent documentation 1〉spy open the 2001-126836 communique (the 23rd page, Fig. 4)

Corresponding patent: USP6,409,527 (being attached to the known technology investigation report).

In this rotary connector, the shared ratio of flat cable is very high in total cost, and the length of required flat cable is short more, and cost is low more.But in the counter-rotative type rotary connector in above-mentioned past, compare with Scrawl, the length of flat cable can only shorten at most makes an appointment with half, so this is to hinder the main cause that further reduces cost.

Summary of the invention

The scheme that The present invention be directed to the actual conditions of this prior art and propose, its purpose is to provide a kind of length that can shorten required flat cable significantly, the rotary connector that reduces cost.

In order to achieve the above object, the rotary connector of the 1st invention has: stator has urceolus portion; Rotor links freely with the rotation of this stator, has inner cylinder portion, forms annulus between this inner cylinder portion and the above-mentioned urceolus portion; Flat cable leaves in the above-mentioned annulus with the state of the coiling direction that reverses halfway, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And, support, rotation is configured in the above-mentioned annulus freely, has the opening that the counter-rotating portion that makes above-mentioned flat cable passes through.On above-mentioned support, have the guide part that surrounds above-mentioned inner cylinder portion as cardinal extremity, set for: compare with other parts to the distance of the outside portion of above-mentioned guide part from the pivot of above-mentioned rotor, near above-mentioned opening, reach maximum with above-mentioned opening.

The rotary connector of Gou Chenging like this, for example, when flat cable is in state on the outer wall of rolling-in in inner cylinder portion, if rotor is rotated on positive and negative a certain direction, then at first, flat cable from inner cylinder portion after the side output of urceolus portion, rotor is rotated to same direction, like this, the flat cable of exporting to urceolus portion side is wound up on the outside portion of guide part set on the support, becomes reeling condition.In contrast, make rotor to certain other direction rotation as if the state on the outside portion that is wound up into guide part from flat cable, then at first, flat cable is exported to urceolus portion side from guide part, rotor is rotated on same direction, the flat cable that outputs to outer side like this is wound up on the outer wall of inner cylinder portion, becomes the rolling-in state.That is to say, flat cable is the process from the rolling-in state to reeling condition, temporarily output to urceolus portion side, on the guide wall of the support that flat cable is winding in the annulus to be disposed under reeling condition, this guide part is compared along the total length of the circumferencial direction of internal face with urceolus portion along the total length of the circumferencial direction of outside portion, and is very short, so, can shorten required flat cable length significantly.

And, in order to achieve the above object, the rotary connector of the 2nd invention, on the basis of the 1st rotary connector of inventing, above-mentioned guide part is for surrounding the guide wall that above-mentioned inner cylinder portion ground extends.

The rotary connector of Gou Chenging like this, for example, when flat cable is in state on the outer wall of rolling-in in inner cylinder portion, if rotor is rotated on positive and negative a certain direction, then at first, flat cable from inner cylinder portion after the side output of urceolus portion, rotor is rotated to same direction, like this, the flat cable of exporting to urceolus portion side is wound up on the outside wall surface of guide wall set on the support, becomes reeling condition.In contrast, make rotor to certain other direction rotation as if the state on the outside wall surface that is wound up into guide wall from flat cable, then at first, flat cable is exported to urceolus portion side from guide wall, rotor is rotated on same direction, the flat cable that outputs to urceolus portion side like this is wound up on the outer wall of inner cylinder portion, becomes reeling condition.That is to say, flat cable is the process from the rolling-in state to reeling condition, temporarily output to urceolus portion side, on the guide wall of the support that flat cable is winding in the annulus to be disposed under reeling condition, this guide wall is compared along the total length of the circumferencial direction of internal face with urceolus portion along the total length of the circumferencial direction of outside portion, and is very short, so, can shorten required flat cable length significantly.

Be preferably in the said structure, above-mentioned guide wall has outer peripheral face cylindraceous, by opening towards the flat cable of urceolus portion under the state of the pivot that departs from rotor, be wound on the above-mentioned guide wall with toroidal.Perhaps, wish that its structure is: above-mentioned guide wall has near restrictions that is positioned at the above-mentioned opening and the annulus that the major part of above-mentioned inner cylinder portion is surrounded, by above-mentioned opening towards the above-mentioned flat cable of above-mentioned urceolus portion under state with respect to the pivot off-centre of above-mentioned rotor, be wound on the above-mentioned guide wall with toroidal.

And, wish that said structure carries out axle supporting to rotor near the above-mentioned opening of support, the flat cable by opening towards above-mentioned urceolus portion is wound up on rotor and the guide wall.In the case, wish that support has the ring-shaped flat board with the roughly the same outside dimension of above-mentioned urceolus portion internal diameter, on this ring-shaped flat board, rotor is carried out the axle supporting, and erect guide wall is set.

Moreover in order to achieve the above object, the rotary connector of the 3rd invention on the basis of rotary connector of the 2nd invention, has formed the jog that is used to reduce with the contact area of above-mentioned flat cable on the outside wall surface of above-mentioned guide wall.

The rotary connector of Gou Chenging the way of flat cable from the rolling-in state to reeling condition, temporarily outputs to urceolus portion side like this.Under reeling condition, flat cable is winding on the outside wall surface of guide way of the support that is disposed in the annulus, the total length along the circumferencial direction of outside wall surface of this guide way is compared with the total length of the inner peripheral surface of urceolus portion, very short, so can shorten the length of required flat cable significantly.And, on the outside wall surface of the guide way of support, formed a kind of jog, so that reduce the contact area with above-mentioned flat cable.So when carrying out the rolling-in action, flat cable does not cling on the outside wall surface of guide way, can successfully export, rotor and support can successfully rotate.

Be preferably in the said structure, especially to the concrete shape of above-mentioned jog without limits, for example its implementation is: scatter a plurality of hemispherical protuberances on the outside wall surface of guide wall, perhaps make the outside wall surface of guide wall form wavy.Especially wish alternately to form recess and protuberance along the circumferencial direction of the outside wall surface of guide wall.And the opening that the guide wall of support can be passed through the counter-rotating portion that can make flat cable is a cardinal extremity, extends into the state that inner cylinder portion is surrounded.But, preferably: if the outside wall surface of guide wall is with respect to forming concentric internal face off-centre of extending circularly with inner cylinder portion, and between the internal face of this guide wall and outside wall surface, form the blank part of concavity, so, can make the support weight reduction and reduce cost.And, if support has outside dimension and the roughly the same ring-shaped flat board of urceolus portion internal diameter, and on this ring-shaped flat board, erect guide wall is set, can make support rotation successfully in annulus so, more satisfactory.

Moreover in order to achieve the above object, the rotary connector of the 4th invention has: stator has urceolus portion; Rotor links freely with the rotation of this stator, has inner cylinder portion, forms annulus between this inner cylinder portion and the above-mentioned urceolus portion; Flat cable leaves in the above-mentioned annulus with the state of the coiling direction that reverses halfway, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And, support, rotation is configured in the above-mentioned annulus freely.On above-mentioned support, has guide wall, the outer peripheral face of this guide wall is with respect to forming concentric inner peripheral surface off-centre of extending circularly with inner cylinder portion, at the maximum diameter of this guide wall the opening that the counter-rotating portion that makes above-mentioned flat cable passes through is set partly, and, on above-mentioned guide wall integrally formed by above-mentioned opening opposed convex wall portion and concavity wall portion.

In the rotary connector that constitutes like this, flat cable is the process from the rolling-in state to reeling condition, temporarily output to urceolus portion side, on the guide wall of the support that flat cable is winding in the annulus to be disposed under reeling condition, this guide wall is compared along the circumferential total length of internal face with urceolus portion along the circumferential total length of outside portion, and is very short, so, can shorten required flat cable length significantly.And, even do not use a plurality of rotors, also can utilize the inner peripheral surface of guide wall to limit flat cable moving diametrically, so, supporting structure can be simplified.

And, in order to achieve the above object, the rotary connector of the 5th invention, have: stator has urceolus portion; Rotor links freely with the rotation of this stator, has inner cylinder portion, forms annulus between this inner cylinder portion and the above-mentioned urceolus portion; Flat cable leaves in the above-mentioned annulus with the state of the coiling direction that reverses halfway, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And, support, rotation is configured in the above-mentioned annulus freely, has the opening that the counter-rotating portion that makes above-mentioned flat cable passes through.On above-mentioned support, have to circumferential extension and surround the most inner wall part of above-mentioned inner cylinder portion and the binding wall that extends from this inner wall part along above-mentioned opening one side direction foreign side and from the outboard end of this bindings wall outside wall portions to above-mentioned inner wall part extension, above-mentioned flat cable by above-mentioned opening, is wound up into the above-mentioned inner wall part and the above-mentioned outside wall portions of above-mentioned support from above-mentioned inner cylinder portion with non-circular shape.

The rotary connector of Gou Chenging like this, for example, when flat cable is in state on the outer wall of rolling-in in inner cylinder portion, if rotor is rotated on positive and negative a certain direction, then at first, from the flat cable of inner cylinder portion output by carrier openings after the side output of urceolus portion, rotor is rotated to same direction, like this, the flat cable of exporting to urceolus portion side is wound up on the outside wall surface of inner wall part set on the support and outside wall portions, becomes reeling condition.In contrast, make rotor to certain other direction rotation if be wound up into the inner wall part and the state on the outside wall portions of support from flat cable, then at first, flat cable is exported to the urceolus side from the inner wall part and the outside wall portions of support, rotor is rotated on same direction, the flat cable that outputs to outer side like this is wound up on the outer wall of inner cylinder portion, becomes the rolling-in state.That is to say, flat cable is the process from the rolling-in state to reeling condition, temporarily output to urceolus portion side, on the inner wall part and outside wall portions of the support that flat cable is winding in the annulus to be disposed under reeling condition, form non-circular shape, the circumferential total length on this inner wall part and outside wall portions edge is compared along the total length of the circumferencial direction of internal face with urceolus portion, and is very short, so, can shorten required flat cable length significantly.And, because utilize the inner wall part be arranged on the support and link wall and outside wall portions comes flat cable is led, so, can make the support weight reduction and reduce cost, the while can make rotor rotate smoothly.

In said structure, support have outside dimension substantially with the identical ring-shaped flat board of internal diameter of above-mentioned urceolus portion, on this ring-shaped flat board, erect and be provided with above-mentioned inner wall part and above-mentioned binding wall and above-mentioned outside wall portions, then can make support rotation smoothly in annulus, more satisfactory.

And, in said structure, if on above-mentioned support, rotate earth's axis supporting roller freely, make above-mentioned roller with to link wall mutually opposed, the counter-rotating portion of flat cable be waltzed through in opening by above-mentioned opening, more satisfactory.In the case, on support, be provided with by opening and roller and with link the opposed opposed walls of wall, the medial end of this opposed walls is connected with inner wall part, and another outside wall portions of extending towards inner wall part in the outboard end setting of opposed walls, then can be wound up into flat cable with non-circular shape on the outside wall portions of matching with inner wall part, more satisfactory.

Moreover in order to achieve the above object, the 6th rotary connector has: stator has urceolus portion; Rotor links freely with the rotation of this stator, has inner cylinder portion, forms annulus between this inner cylinder portion and the above-mentioned urceolus portion; Flat cable leaves in the above-mentioned annulus with the state of the coiling direction that reverses halfway, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And, support, rotation is configured in the above-mentioned annulus freely, has the opening that the counter-rotating portion that makes above-mentioned flat cable passes through.Possessing to have on above-mentioned support makes above-mentioned inner cylinder portion insert the ring-shaped flat board of logical centre bore; Be arranged side by side a plurality of columns at this ring-shaped flat board, so that above-mentioned centre bore is surrounded, and these columns are dispersed in the non-annularity zone, it is maximum that the distance of the pivot that leaves above-mentioned rotor in this non-annularity zone reaches near above-mentioned opening, above-mentioned flat cable, is wound up on the above-mentioned column that is positioned on the outer edge, above-mentioned non-annularity zone with non-circular shape by above-mentioned opening from above-mentioned inner cylinder portion.

The rotary connector of Gou Chenging like this, for example, when flat cable is in state on the outer wall of rolling-in in inner cylinder portion, if rotor is rotated on positive and negative a certain direction, then at first, from the flat cable of inner cylinder portion output by opening after the side output of urceolus portion, rotor is rotated to same direction, and like this, the flat cable of exporting to urceolus portion side is wound up on a plurality of columns set on the support, form non-circular shape, become reeling condition.In contrast, make rotor to certain other direction rotation if be wound up into the inner wall part and the state on the outside wall portions of support from flat cable, then at first, flat cable is exported from the column of support, rotor is rotated on same direction, the flat cable that outputs to outer side like this is wound up on the outer wall of inner cylinder portion, becomes reeling condition.That is to say, flat cable is the process from the rolling-in state to reeling condition, temporarily output to urceolus portion side, on each column of the support that flat cable is winding in the annulus to be disposed under reeling condition, form non-circular shape, the total length of the circumferencial direction on the coiling portion edge of this non-circular shape, compare along the total length of the circumferencial direction of internal face with urceolus portion, very short, so, required flat cable length can be shortened significantly.And, because utilize a plurality of columns be arranged side by side in the non-annularity zone of support to come flat cable is led, so, can make the support weight reduction and reduce cost, the while can make rotor successfully rotate.

In said structure, needn't make column all is same shape, especially if zone outer edge continuous part is made for the column of wedge shape from opening along non-annularity, and other columns are made into cylindrical shape, the counter-rotating portion that then can prevent flat cable produces buckling distortion during by opening, simultaneously, when rotating, rotor can successfully carry out rolling-in or coiling to flat cable, and more satisfactory.

And, in said structure,, then when rotor rotates, can make successfully flat cable is carried out rolling-in or coiling if on part or all of column, roller is carried out axle supporting and it is rotated freely, more satisfactory.

And, in order to achieve the above object, the rotary connector of the 7th invention, have: stator has urceolus portion; Rotor links freely with the rotation of this stator, has inner cylinder portion, forms annulus between this inner cylinder portion and the above-mentioned urceolus portion; Flat cable leaves in the above-mentioned annulus with the state of the coiling direction that reverses halfway, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And, plastic support, rotation is configured in the above-mentioned annulus freely.On above-mentioned support, have a plurality of hollow cylindrical wall, this hollow cylindrical wall is dispersed in week upwards, above-mentioned inner cylinder portion is surrounded, the virtual inner peripheral surface that links these hollow cylindrical wall inboards is set at the toroidal roughly concentric with above-mentioned inner cylinder portion, and, make the virtual outer peripheral face that links above-mentioned each hollow cylindrical wall outside with respect to above-mentioned inner cylinder portion center off-centre, partly be provided with the opening that the counter-rotating portion that makes above-mentioned flat cable passes through at the maximum diameter of this virtual outer peripheral face.

The rotary connector of Gou Chenging like this, for example, when flat cable is in state on the outer wall of rolling-in in inner cylinder portion, if rotor is rotated on positive and negative a certain direction, then at first, flat cable from inner cylinder portion after the side output of urceolus portion, rotor is rotated to same direction, like this, the flat cable of exporting to urceolus portion side is wound up on the outer peripheral face of each set on the support hollow cylindrical wall, becomes reeling condition.In contrast, make rotor to certain other direction rotation as if the state on the outer peripheral face that is wound up into each hollow cylindrical wall from flat cable, then at first, flat cable is exported to urceolus portion side from each hollow cylindrical wall, rotor is rotated on same direction, the flat cable that outputs to outer side like this is wound up on the outer wall of inner cylinder portion, becomes the rolling-in state.That is to say, flat cable is the process from the rolling-in state to reeling condition, temporarily output to urceolus portion side, on each hollow cylindrical wall of the support that flat cable is winding in the annulus to be disposed under reeling condition, circumferential total length to the virtual outer peripheral face of connection outside this hollow cylindrical wall is compared along the circumferential total length of internal face with urceolus portion, very short, so, required flat cable length can be shortened significantly.And, because each hollow cylindrical wall that flat cable is led is made the hollow cylindrical body that inside does not have the synthetic resin material, so, can make the support weight reduction and reduce cost, simultaneously rotor is successfully rotated.

In said structure, support has the ring-shaped flat board with the roughly the same outside dimension of urceolus portion internal diameter, if erect on these ring-shaped flat boards each hollow cylindrical wall is set, and then can make support rotation successfully in annulus, and is more satisfactory.

And, in said structure, between above-mentioned each hollow cylindrical wall of above-mentioned support, has supplementary wall respectively, if these supplementary wall are arranged on the above-mentioned virtual inner peripheral surface, then can utilize each supplementary wall to prevent that flat cable from passing through to expand laterally between each hollow cylindrical wall, so, can successfully carry out rolling-in or coiling action to flat cable, more satisfactory.

Moreover, in order to achieve the above object, the rotary connector of the 8th invention, have: stator has urceolus portion; Rotor links freely with the rotation of this stator, has inner cylinder portion, forms annulus between this inner cylinder portion and the above-mentioned urceolus portion; Flat cable leaves in the above-mentioned annulus with the state of the coiling direction that reverses halfway, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And, plastic support, rotation is configured in the above-mentioned annulus freely.On above-mentioned support, has the ring-shaped flat board, the outside dimension of this ring-shaped flat board internal diameter with above-mentioned urceolus portion substantially is identical, on this ring-shaped flat board, erect guide wall is set, the outer peripheral face of this guide wall is with respect to forming concentric inner peripheral surface off-centre of extending circularly with above-mentioned inner cylinder portion, and the opening that the counter-rotating portion that makes above-mentioned flat cable passes through partly is set at the maximum diameter of this guide wall, and, formed the loss of weight portion of removing the synthetic resin material at least one side in above-mentioned ring-shaped flat board and above-mentioned guide wall.

In the rotary connector of said structure, flat cable is the process from the rolling-in state to reeling condition, temporarily output to urceolus portion side, on the guide wall of the support that flat cable is winding in the annulus to be disposed under reeling condition, this guide wall is compared along the circumferential total length of internal face with urceolus portion along the circumferential total length of outside portion, very short, so, required flat cable length can be shortened significantly.And, because at least one in the two of the ring-shaped flat board of support and guide wall, formed the loss of weight portion of having removed the synthetic resin material, so, can make the support weight reduction and reduce cost, simultaneously rotor is rotated freely.

In said structure, as above-mentioned loss of weight portion, between the inner peripheral surface of guide wall and outer peripheral face, form the hollow part of concavity, perhaps form a plurality of reach through holes, this reach through hole passes the inner peripheral surface and the outer peripheral face of guide wall, can form a plurality of open-works of energy break-through ring-shaped flat board plate face.At this moment also can adopt these loss of weight bilge constructions separately, but be preferably in and be formed in combination a plurality of loss of weight portion on the support, for example, on the ring-shaped flat board, form a plurality of open-works, and when between the inner peripheral surface of guide wall and outer peripheral face, forming the hollow part of concavity, can more effectively make the support weight reduction and reduce cost.

And, in order to achieve the above object, the rotary connector of the 9th invention, have: stator has base plate and urceolus portion; Rotor has top plate portion and inner cylinder portion, and rotation is attached on this stator freely; Flat cable is installed in the annulus that forms between these stators and rotor with the state of the coiling direction that reverses halfway, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And, plastic support, rotation is configured in the above-mentioned annulus freely.On above-mentioned support, have and the opposed ring-shaped flat board of above-mentioned base plate, the outside dimension of this ring-shaped flat board is identical with above-mentioned urceolus portion internal diameter substantially, on this ring-shaped flat board, erect guide wall is set, the outer peripheral face of this guide wall is with respect to forming concentric inner peripheral surface off-centre of extending circularly with above-mentioned inner cylinder portion, and the opening that above-mentioned flat cable counter-rotating portion is passed through is set partly at the maximum diameter of this guide wall, and, on at least one side of above-mentioned base plate and above-mentioned ring-shaped flat board, be provided with the 1st elastic acting force applying unit, be used to apply and make both active forces to away from each other direction.

In the rotary connector of such formation, flat cable is the process from the rolling-in state to reeling condition, temporarily output to urceolus portion side, on the guide wall of the support that flat cable is winding in the annulus to be disposed under reeling condition, this guide wall is compared along the total length of the circumferencial direction of internal face with urceolus portion along the total length of the circumferencial direction of outer peripheral face, and is very short, so, can shorten required flat cable length significantly.And, on at least one in the two of the ring-shaped flat board of the base plate of stator and support, be provided with a kind of active force portion that applies, so that the guide wall to support applies towards the elastic acting force of rotor top plate portion, so when applying when vibration from the outside in rotor rotating shaft direction, the action that also can limit bracket moves up and down in annulus can reduce that support impacts top plate portion and base plate and the abnormal sound that produces.

In said structure, above-mentioned the 1st elastic acting force applying unit is made of elastic tongue piece, the ring-shaped flat board of this elastic tongue piece and elastic acting force applying unit frame forms an integral body, be the cantilever beam shape, if make the base plate Elastic Contact of free end (free end) Yu the stator of this elastic tongue piece, then can simple the 1st elastic acting force applying unit of implementation structure, comparatively ideal.In the case, form at least more than 3 as if the circumferencial direction of elastic tongue piece along the ring-shaped flat board.Then can stably be bearing in support on the base plate, comparatively desirable.And, if forming curved face part on the free end of elastic tongue piece, then can make support rotation successfully on the base plate of stator, comparatively desirable.

Moreover in order to achieve the above object, the 10th being rotatably connected of invention has: stator has base plate and urceolus portion; Rotor has top plate portion and inner cylinder portion, and rotation is attached on the said stator freely; Flat cable is installed in the annulus that forms between these stators and rotor with the state of the coiling direction that reverses halfway, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And support, rotation is configured in the above-mentioned annulus freely, has with the opposed ring-shaped flat board of above-mentioned base plate and erect the guide wall that is arranged on this ring-shaped flat board the counter-rotating portion of the above-mentioned flat cable of configuration in the opening that is provided with on the above-mentioned guide wall.It is characterized in that, the internal face of above-mentioned guide wall is formed and the concentric toroidal of circular reach through hole that is arranged on above-mentioned ring-shaped flat board central authorities, and, compare with other parts to the distance of the outside wall surface of above-mentioned guide wall from the pivot of above-mentioned rotor, maximum near above-mentioned opening, and, on above-mentioned rotor, form by stage portion and with the continuous minor diameter part of above-mentioned inner cylinder portion, and at least one side in above-mentioned ring-shaped flat board and above-mentioned base plate the elastic acting force applying unit is set, be used for the circumference that is inserted into the above-mentioned minor diameter part of above-mentioned reach through hole is crimped onto above-mentioned stage portion.

In the rotary connector that constitutes like this, flat cable is the process from the rolling-in state to reeling condition, temporarily output to urceolus portion side, on the guide wall of the support that flat cable is winding in the annulus to be disposed under reeling condition, this guide wall is compared along the circumferential total length of internal face with urceolus portion along the circumferential total length of outer peripheral face, very short, so, required flat cable length can be shortened significantly.And, in rotor, form continuous minor diameter part by inner cylinder portion and stage portion, while is inserted minor diameter part in the central set reach through hole of the ring-shaped flat board of support, utilize the 2nd elastic acting force applying unit that the circumference of this reach through hole is crimped onto on the stage portion, so, when applying when vibration from the outside in the rotating shaft direction of rotor, also can suppress the action that support moves up and down in annulus, can reduce that support impacts top plate portion and base plate and the noise that produces.

In said structure, above-mentioned ring-shaped flat board has the outside dimension roughly the same with the internal diameter of urceolus portion, if the 2nd elastic acting force applying unit is by forming a plurality of elastic tongue pieces that one keeps single armed beam shape with this ring-shaped flat board, so, can simple the 2nd elastic acting force applying unit of implementation structure, comparatively ideal.In the case, on the free end of each elastic tongue piece, form curved face part,, support is rotated freely in annulus if make the base plate Elastic Contact of this curved face part and stator, comparatively desirable.And, if each elastic tongue piece on the circumferencial direction of ring-shaped flat board by uniformly-spaced forming more than 3, support stably is bearing on the base plate, respond well.

And in order to achieve the above object, the 11st rotary connector has: stator has base plate and urceolus portion; Rotor has inner cylinder portion and top plate portion, and rotation is attached on the said stator freely; Flat cable is installed in the annulus that forms between these stators and rotor with the state of the coiling direction that reverses halfway, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And support, rotation is configured in the above-mentioned annulus freely.On above-mentioned support, have and the opposed ring-shaped flat board of above-mentioned base plate, on this ring-shaped flat board, erect guide wall is set, the outer peripheral face of this guide wall is with respect to forming concentric inner peripheral surface off-centre of extending circularly with above-mentioned inner cylinder portion, and the opening that the counter-rotating portion that makes above-mentioned flat cable passes through partly is set at the maximum diameter of this guide wall, and, on above-mentioned base plate, lay sliding property thin slice.

In the rotary connector of such formation, flat cable is the process from the rolling-in state to reeling condition, temporarily output to urceolus portion side, on the guide wall of the support that flat cable is winding in the annulus to be disposed under reeling condition, this guide wall is compared along the circumferential total length of internal face with urceolus portion along the circumferential total length of outer peripheral face, very short, so, required flat cable length can be shortened significantly.And, because laid the slip thin slice on the base plate of the lower open end that forms annulus, so, the ring-shaped flat board of support carries out sliding contact with the slip thin slice on one side, in annulus, rotate on one side, can reduce the ear-piercing sliding noise of the abutment portion generation of support and base plate.

In said structure, also can make the following direct and slip thin slice sliding contact of the ring-shaped flat board of support,, make this projection and slip thin slice carry out sliding contact if form the projection of curve form on below the ring-shaped flat board, then the sliding contact resistance reduces, and can make the support rotation freely.

And, in said structure, if on the lower surface of the top plate portion of the upper, open end that forms annulus, lay other slip thin slice, then when the rolling-in of flat cable or coiling action, this flat cable one side and this slip thin slice sliding contact, produce displacement on one side, so, the abutment portion of not only above-mentioned support and base plate, and the sliding contact sound that the abutting part branch of flat cable and top plate portion produces also can reduce, and can more effectively reduce the generation of abnormal sound.

Moreover in order to achieve the above object, the 12nd invention rotary connector has: stator has urceolus portion; Rotor, rotation is attached on this stator freely, has inner cylinder portion, forms annulus between this inner cylinder portion and the above-mentioned urceolus portion; State with the coiling direction that reverses halfway leaves in the above-mentioned annulus, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And, support, rotation is arranged in the above-mentioned annulus freely.On above-mentioned support, have and the opposed ring-shaped flat board of above-mentioned base plate, on this ring-shaped flat board, erect guide wall is set, the outer peripheral face of this guide wall is with respect to forming concentric inner peripheral surface off-centre of extending circularly with above-mentioned inner cylinder portion, and the opening that the counter-rotating portion that makes above-mentioned flat cable passes through partly is set at the maximum diameter of this guide wall, and, in above-mentioned urceolus portion, be provided with the elastic pressuring plate that the inner face to above-mentioned annulus extends.

In the rotary connector of such formation, flat cable is the process from the rolling-in state to reeling condition, temporarily output to urceolus portion side, on the guide wall of the support that flat cable is winding in the annulus to be disposed under reeling condition, this guide wall is compared along the circumferential total length of internal face with urceolus portion along the circumferential total length of outer peripheral face, very short, so, required flat cable length can be shortened significantly.And, because the elastic pressuring plate that extends in annulus is set in urceolus portion, utilize this elastic pressuring plate to come flat cable is applied active force to the outer peripheral face side of guide wall, so, even apply oscillating action radially from the outside to annulus, also can suppress flat cable to shaking radially, can reduce the generation of the sound that rustles.

In said structure, quantity to elastic pressuring plate is not particularly limited, if make a plurality of elastic pressuring plates along urceolus portion circumferentially substantially by uniformly-spaced being configured, then can be evenly flat cable be applied elastic acting force to the center position of annulus, comparatively desirable.

And, in said structure,, and an end of elastic pressuring plate is bearing in the urceolus portion with single armed beam shape if make elastic pressuring plate form curved shape, then can be assembled into elastic pressuring plate in the urceolus portion at an easy rate.

And, in order to achieve the above object, the rotary connector of the 13rd invention, have: stator has base plate and urceolus portion; Rotor has inner cylinder portion and top plate portion, and rotation is attached on the said stator freely; Flat cable is installed in the annulus that forms between these stators and rotor with the state of the coiling direction that reverses halfway, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And guide way, rotation is configured in the above-mentioned annulus freely.Above-mentioned guide way forms overlooks the word shape into C, the outside wall surface of this guide way is with respect to forming concentric internal face off-centre of extending circularly with above-mentioned inner cylinder portion, partly be provided with the opening that the counter-rotating portion that makes above-mentioned flat cable passes through at the maximum diameter of this guide way, and, make the outstanding protuberance from above-mentioned internal face lower end of this guide way, combine sliding freely with formed circular guide groove portion on above-mentioned base plate.

Constitute like this rotary connector in, flat cable is the process from the rolling-in state to reeling condition, temporarily output to urceolus portion side, on the outer peripheral face of the guide way that flat cable is winding in the annulus to be disposed under reeling condition, this guide way is compared along the circumference of internal face with urceolus portion along the circumferential total length of outside wall surface, and is very short, so, can shorten required flat cable length significantly.And, guide way is formed overlook shape into the C word, the misalignment of its outside wall surface internal face cylindraceous center, the formed circular guiding groove section in the outstanding teat in internal face lower end and the stator plate portion of this guide way is combined sliding freely, so, the guide way weight reduction can be made, and the guide way rotation can be made freely.

In said structure, also can make raised part form continuous state along the whole internal face of guide way, perhaps make a plurality of protuberances form the dispersity of discontinuity along the internal face of guide way.

And, in said structure,, then can make the further weight reduction of guide way if between the internal face of above-mentioned guide way and outside wall surface, formed the hollow part of concavity, more satisfactory.

Moreover, in said structure, if at least one side in the top plate portion of the upper end of above-mentioned guide way and rotor, the elastic acting force applying unit is set, is used to apply and makes both directive effect power away from each other, though then externally oscillating action under the situation on the rotor rotating shaft direction, also can utilize the elastic acting force applying unit to suppress the action that guide way moves up and down in annulus, so, can reduce guide way and impact the abnormal sound that top plate portion produced, more satisfactory.In the case, be made of a plurality of elastic tongue pieces in the elastic acting force applying unit, the internal face of this elastic tongue piece and guide way upper end forms one, if make Elastic Contact below the free end of this elastic tongue piece and the top plate portion, then can the simple elastic acting force applying unit of implementation structure, more satisfactory.

The invention effect

The rotary connector of the 1st invention, in the annulus between the urceolus portion of the inner cylinder portion of rotor and stator in the support of rotation configuration freely, opening with the counter-rotating portion by flat cable is that cardinal extremity is provided with guide part, this guide part extends into inner cylinder portion is surrounded, set distance for from the pivot of rotor to the outside wall surface of guide part, compare near opening maximum with other parts, so, flat cable is wound up into and urceolus portion mutually on the less guide wall of diameter group, become reeling condition, can correspondingly shorten the length of required flat cable significantly.

And, the rotary connector of the 2nd invention, in the annulus between the urceolus portion of the inner cylinder portion of rotor and stator in the support of rotation configuration freely, opening with the counter-rotating portion by flat cable is that cardinal extremity is provided with guide wall, this guide wall extends into surrounds inner cylinder portion, set distance for from the pivot of rotor to the outside wall surface of guide wall, compare near opening maximum with other parts, so, flat cable is wound up into and urceolus portion mutually on the less guide wall of diameter group, become reeling condition, can correspondingly shorten the length of required flat cable significantly.

Moreover, the rotary connector of the 3rd invention, in the annulus between the urceolus portion of the inner cylinder portion of rotor and stator in the support of rotation configuration freely, the opening that can pass through with the counter-rotating portion of flat cable is that cardinal extremity is provided with guide wall, this guide wall extends into surrounds inner cylinder portion, set distance for from the pivot of rotor to the outside wall surface of guide way, compare near opening to maximum with other parts, so, flat cable is wound up into and the urceolus portion of stator mutually on the outside wall surface of the less guide way of diameter group, become reeling condition, can correspondingly shorten the length of required flat cable significantly.And, on the outside wall surface of guide wall, formed the jog that the contact area with flat cable is reduced, so flat cable can not be adjacent on the outside wall surface in guide wall when rolling-in is moved, and can successfully export, and can make the rotation of rotor and support freely.

And, the rotary connector of the 4th invention, in the annulus between the urceolus portion of the inner cylinder portion of rotor and stator in the support of rotation configuration freely, be provided with guide wall, its outer peripheral face is with respect to forming concentric internal face off-centre of extending circularly with inner cylinder portion, partly is provided with the opening that the counter-rotating portion of flat cable passes through at the maximum diameter of this guide wall.So flat cable is wound up into and the urceolus portion of stator mutually on the less guide wall outer peripheral face of diameter group, becomes reeling condition, can correspondingly shorten the length of required flat cable significantly.And, make on guide wall that opposed convex wall portion and concavity wall portion form as a whole by opening with eccentric inner peripheral surface and outer peripheral face, so, utilize this guide wall can successfully carry out the rolling-in and the coiling action of flat cable, therefore, can simplify supporting structure, reduce cost.

And the rotary connector of the 5th invention on the support of rotation configuration freely, is provided with in the annulus between the urceolus portion of the inner cylinder portion of rotor and stator: inner wall part, circumferentially extend and surround the most inner wall part of above-mentioned inner cylinder portion; Link wall, the binding wall that extends to foreign side from this inner wall part along above-mentioned opening; And outside wall portions, extend to above-mentioned inner wall part from this outboard end that links wall, make flat cable be wound up into the inner wall part and the outside wall portions of support by opening from inner cylinder portion, form non-circular shape, so, comparing on the inner wall part and outside wall portions short the flat cable of having reeled along circumferential total length with the urceolus portion of stator, become reeling condition, can correspondingly shorten the length of flat cable significantly.And, because utilize the inner wall part be arranged on the support and linking part and outside wall portions to come flat cable is led, so, can make weight support frame light and cost is low.Simultaneously, can make the rotor rotation freely.

And, the rotary connector of the 6th invention, in the annulus between the urceolus portion of the inner cylinder portion of rotor and stator on the support of rotation configuration freely, be provided with ring-shaped flat board with centre bore, on this ring-shaped flat board, a plurality of columns have been arranged side by side, the state that formation is surrounded centre bore, and the distance that these columns are distributed to the pivot that leaves rotor is near opening in the maximum non-annularity zone, flat cable forms non-circular shape from inner cylinder portion by the column that opening is wound up into the outer edge that is positioned at the non-annularity zone, so, flat cable is wound onto with the urceolus portion of stator and compares around each short column of circumferential total length, become reeling condition, can correspondingly shorten the length of required flat cable significantly.And, because utilize a plurality of columns that are arranged side by side in the non-annularity zone of support to come flat cable is led, so, can make the support weight reduction, reduce cost, can make the rotor rotation simultaneously freely.

Moreover, the rotary connector of the 7th invention, in the annulus between the urceolus portion of the inner cylinder portion of rotor and stator on the plastic support of rotation configuration freely, a plurality of hollow cylindrical wall are set, this hollow cylindrical wall is dispersed in week upwards, above-mentioned inner cylinder portion is surrounded, the virtual inner peripheral surface that this hollow cylindrical wall inboard is linked is set at the toroidal roughly concentric with inner cylinder portion, make the misalignment inner cylinder portion center of the virtual outer peripheral face that links each hollow cylindrical wall outside simultaneously, partly be provided with opening at the maximum diameter of this virtual outer peripheral face by the counter-rotating portion of flat cable, so, with the urceolus portion of stator mutually on the virtual outer peripheral face of less each the hollow cylindrical wall of diameter group, flat cable is reeled, and has formed reeling condition, can correspondingly shorten the length of required flat cable significantly.And because each hollow cylindrical wall that flat cable is led is made for the hollow cylindrical body that inside does not have the synthetic resin material, so, can make the support weight reduction, reduce cost, can make the rotor rotation simultaneously freely.

Moreover the rotary connector of the 8th invention in the annulus between the urceolus portion of the inner cylinder portion of rotor and stator on the plastic support of rotation configuration freely, is provided with the ring-shaped flat board with the roughly the same outside dimension of urceolus portion internal diameter.And, on this ring-shaped flat board, erect and be provided with guide wall, the outer peripheral face of this guide wall is with respect to above-mentioned inner cylinder portion center off-centre, this inner peripheral surface extends into the toroidal concentric with inner cylinder portion, on the maximum diameter of this guide wall part, be provided with the opening that the counter-rotating portion of flat cable is passed through, so, with the outer peripheral face of the stator urceolus portion guide wall that diameter group is little mutually on have flat cable to reel, form reeling condition, can correspondingly shorten the length of required flat cable significantly.And, formed the loss of weight portion of removing the synthetic resin material at least a in the ring-shaped flat board of support and guide wall, so, can make the support weight reduction, reduce cost, and can make the rotor rotation freely.

Moreover, the rotary connector of the 9th invention, formed the annulus between inner cylinder portion and the top plate portion with rotor and the urceolus portion with stator and the base plate, in this annulus on the plastic support of rotation configuration freely, be provided with ring-shaped flat board with the roughly the same outside dimension of urceolus portion internal diameter.And, on this ring-shaped flat board, erect and be provided with guide wall, the misalignment inner peripheral surface center of its outer peripheral face, this inner peripheral surface extends into the toroidal concentric with inner cylinder portion, partly be provided with the opening that the counter-rotating portion of flat cable is passed through at the maximum diameter of this guide wall, so, with the outer peripheral face coiling flat cable of the stator urceolus portion guide wall that diameter group is little mutually, form reeling condition, can correspondingly shorten the length of required flat cable significantly.And, on at least one side of the ring-shaped flat board of the base plate of stator and support, be provided with the 1st elastic acting force applying unit, the 1st elastic acting force applying unit applies elastic acting force to guide wall, make its top plate portion towards rotor, so, when applying when vibration from the outside in the rotating shaft direction of rotor, also can suppress the action that support moves up and down in annulus, can reduce that support impacts top plate portion and base plate and the abnormal sound that produces.

Moreover, the rotary connector of the 10th invention, formed the annulus between inner cylinder portion and the top plate portion with rotor and the urceolus portion with stator and the base plate, on the ring-shaped flat board of the support that rotation is disposed freely in this annulus, erect the guide wall that setting is passed through the counter-rotating portion of flat cable, make the internal face of this guide wall form the toroidal concentric with the reach through hole of the central authorities of passing the ring-shaped flat board, and form: compare with other parts to the distance of the outside wall surface of guide wall from the pivot of rotor, be maximum near opening, so, with the outer peripheral face of the stator urceolus portion guide wall that diameter group is little mutually on the flat cable of reeling, form reeling condition, can correspondingly shorten the length of required flat cable significantly.And, on rotor, form continuous minor diameter part by inner cylinder portion and stage portion, this minor diameter part is inserted in the reach through hole of support, utilize the 2nd elastic acting force applying unit that the circumference of this reach through hole is crimped onto stage portion, so, when applying when vibration from the outside in the rotating shaft direction of rotor, also can suppress the action that support moves up and down in annulus, can reduce that support impacts top plate portion and base plate and the abnormal sound that produces.

Moreover, the rotary connector of the 11st invention, formed the annulus between inner cylinder portion and the top plate portion with rotor and the urceolus portion with stator and the base plate, in this annulus, on the support of rotation configuration freely, be provided with and the opposed ring-shaped flat board of base plate.And, erect at this ring-shaped flat board and to be provided with guide wall, the misalignment inner peripheral surface center of its outer peripheral face, this inner peripheral surface extends into the toroidal concentric with inner cylinder portion, partly be provided with the opening that the counter-rotating portion of flat cable is passed through at the maximum diameter of this guide wall, so, with the outer peripheral face of the stator urceolus portion guide wall that diameter group is little mutually on the flat cable of reeling, form reeling condition, can correspondingly shorten the length of required flat cable significantly.And, on the base plate that forms the annulus bottom, laid the slip thin slice, so the ring-shaped flat board of support carries out sliding contact with the slip thin slice on one side, in annulus, rotate on one side, can reduce the ear-piercing slip sound of the abutting part branch generation of support and base plate.

Moreover the rotary connector of the 12nd invention forms annulus between the urceolus portion of the inner cylinder portion of rotor and stator, on the support that is configured with rotation state freely in this annulus, is provided with the ring-shaped flat board.And on this ring-shaped flat board, erect and be provided with guide wall, the misalignment inner peripheral surface center of its outer peripheral face, this inner peripheral surface extends into the toroidal concentric with inner cylinder portion, partly be provided with the opening that the counter-rotating portion of flat cable is passed through at the maximum diameter of this guide wall, so, with the outer peripheral face of the stator urceolus portion guide wall that diameter group is little mutually on the flat cable of reeling, form reeling condition, can correspondingly shorten the length of required flat cable significantly.And, be provided with the elastic pressuring plate that extends to the inner face of annulus in urceolus portion, utilize this elastic pressuring plate to come flat cable is applied active force to the annulus center position, so, even apply oscillating action radially from the outside to annulus, also can suppress flat cable to radially swing, can reduce the generation of noisy husky sound.

And, the rotary connector of the 13rd invention, base plate with stator and urceolus portion and have the top plate portion of rotor and inner cylinder portion between formed annulus, the guide way that rotation is disposed freely in this annulus becomes overlooks the shape that pattern is the C word, its outside wall surface misalignment the internal face center, this internal face extends into the shape concentric with inner cylinder portion, partly be provided with the opening that the counter-rotating portion that makes flat cable passes through at the maximum diameter of this guide way, and, formed circular guide groove portion combines sliding freely on the outstanding protuberance in the internal face lower end of this guide way and the base plate, so, flat cable is wound up on the outside wall surface with the urceolus portion guide way that diameter group is little mutually of stator, form reeling condition, can correspondingly shorten the length of required flat cable significantly.And, guide way is formed overlook the shape that figure is the C word, its outside wall surface misalignment internal face cylindraceous center, formed circular guide groove portion combines sliding freely in the outstanding protuberance in the internal face lower end of this guide way and the stator plate portion, so, the guide way weight reduction can either be made, the guide way rotation can be made again freely.

Description of drawings

Fig. 1 relates to the exploded perspective view of the rotary connector of the present invention's the 1st execution mode example.

Fig. 2 is the cutaway view of this rotary connector.

Fig. 3 is the oblique view of the support that had in this rotary connector.

Fig. 4 is the action specification figure of this rotary connector.

Fig. 5 is the key diagram of comparative example of the shortening effect of expression flat cable.

Fig. 6 is the vertical view of support of the variation of expression guide wall.

Fig. 7 is the vertical view of support of the variation of expression guide wall.

Fig. 8 is the vertical view of the support of the present invention's the 2nd execution mode example.

Fig. 9 is the action specification figure with rotary connector of the support that relates to the present invention's the 2nd execution mode example.

Figure 10 is the vertical view of the variation of expression support of the present invention.

Figure 11 is the vertical view of the variation of expression support of the present invention.

Figure 12 relates to the oblique view of the support of the 3rd execution mode example of the present invention.

Figure 13 relates to the vertical view of the support of the 4th execution mode example of the present invention.

Figure 14 relates to the vertical view of the support of the 5th execution mode example of the present invention.

Figure 15 is the oblique view of the variation of expression support of the present invention.

Figure 16 relates to the vertical view of the support of the present invention's the 6th execution mode example.

Figure 17 relates to the oblique view of the support of the present invention's the 7th execution mode example.

Figure 18 is the oblique view of the variation of expression support of the present invention.

Figure 19 relates to the oblique view of the support of the present invention's the 8th execution mode example.

Figure 20 relates to the cutaway view of rotary connector of the support of the present invention's the 8th execution mode example.

Figure 21 relates to the key diagram of the bound fraction of the support of the present invention's the 9th execution mode example and rotor.

Figure 22 is the cutaway view with rotary connector of support of the present invention.

Figure 23 relates to the cutaway view of the rotary connector of the present invention's the 10th execution mode example.

Figure 24 relates to the vertical view of the support of the present invention's the 11st execution mode example.

Figure 25 relates to the cutaway view of the rotary connector of the present invention's the 12nd execution mode example.

Figure 26 is the oblique view of guide way of the present invention.

Figure 27 is the action specification figure of rotary connector of the present invention.

Figure 28 is the oblique view of the variation of guide way of the present invention.

Figure 29 relates to the key diagram of the elastic tongue piece that guide way of the present invention has.

Embodiment

Following with reference to accompanying drawing, the 1st execution mode that relates to the 1st and the 2nd invention of the present invention is described.Fig. 1 relates to the exploded perspective view of the rotary connector of the present invention's the 1st execution mode.Fig. 2 is the cutaway view of this rotary connector.Fig. 3 is the oblique view of the support that had in this rotary connector.Fig. 4 is the action specification figure of this rotary connector.

As Fig. 1～shown in Figure 3, the rotary connector that relates to the present embodiment example, its main composition partly is: stator 1, the rotor 2 that links freely with stator 1 rotation, be configured in support 4 between stator 1 and the rotor 2 freely in the flat cable 3 that is electrically connected between this stator 1 and the rotor 2 and rotation.

Stator 1 is the fixed component that is fixed on the steering column, and this stator 1 is by plastic shell 5 and lid 6 and constitute.Shell 5 has the 5a of urceolus portion and from the outstanding cap 5b of its outer wall, lid 6 has base plate 6a and reaches the underside contain portion 6b outstanding from its outer edge.Central authorities at base plate 6a have formed centre bore 6c, utilizing fast makes the lower end of this shell 5 and the outer edge of lid 6 form an integral body in conjunction with (ス Na Star プ combination) method, like this, seal the lower open end of the 5a of urceolus portion by base plate 6a, and, the upper, open end of sealing the 6b of underside contain portion by cap 5b.

Rotor 2 is the movable parts that are connected with the steering wheel side, and this rotor 2 is made of plastic upper rotor 7 and lower rotor 8.Upper rotor 7 has the top plate portion 7a of ring-type and from the inner cylinder portion 7b that its centre lets droop, erects on top plate portion 7a and be provided with upside incorporating section 7c.The internal diameter size of inner cylinder portion 7b can make steering spindle insert.The inner peripheral surface of this inner cylinder portion 7b and lower rotor 8 form an integral body.Lower rotor 8 is the cylindrical body with flange part 8a.This lower rotor 8 is inserted from the centre bore 6c of lid 6, made it carry out quick the combination with inner cylinder portion 7b.Like this, rotor 2 and stator 1 rotation are linked freely.Then, under this connecting state, utilize the 5a of urceolus portion of stator 1 side and the top plate portion 7a and the inner cylinder portion 7b of base plate 6a and rotor 2 sides to form the annulus of overlooking to annular 9.

Flat cable 3 is made of shoestring, and this shoestring comes a plurality of conductors parallel to each other are carried out stacked making with a pair of edge edge film.This flat cable 3 is swung to the ground folding and unfolding in annulus 9 by the 3a of counter-rotating portion of U word shape.On the two ends of flat cable 3, connect bootstrap block 9,10 respectively.Bootstrap block 9 on one side is fixed in the 6b of underside contain portion of lid 6, has connected the lead-in wire 11 that has aerial lug 11a on the front end in this bootstrap block 9.And another bootstrap block 10 is fixed in the upside incorporating section 7c of upper rotor 7, has connected lead-in wire 12 on this bootstrap block 10, and lead-in wire 12 has aerial lug 12a at front end.

Support 4 has: be installed in the ring-shaped flat board 4a on the base plate 6a of lid 6 and erect guide wall 4b and the fulcrum 4c as guide part that is arranged on this ring-shaped flat board 4a, their are as a whole with forming synthetic resin.The outside dimension that ring-shaped flat board 4a the has internal diameter with the 5a of urceolus portion substantially is identical, has formed pilot hole 4d in the central.Insert the lower, outer perimeter face of inner cylinder portion 7b in this pilot hole 4d, make support 4 carry out sliding contact with inner cylinder portion 7b on one side, on one side rotation in annulus 9.And, formed protuberance 4e on below ring-shaped flat board 4a, be used to reduce and base plate 6a between resistance to sliding.Guide wall 4b erects and is arranged on the ring-shaped flat board 4a, forms the state that the major part of pilot hole 4d is surrounded.Inner circumferential surface is concentric with pilot hole 4d substantially circle, but the misalignment centre bore 4d of outer peripheral face is a lot.The part of guide wall 4b is excised on ring-shaped flat board 4a, erects fulcrum 4c cylindraceous is set in this notch part.Roller 13 is supported and can be rotated freely by this fulcrum 4c, the 3a of counter-rotating portion of above-mentioned flat cable 3 be positioned at roller 13 and and the side of its opposed guide wall 4b between opening 14 (referring to Fig. 4).So, the distance from the pivot of rotor 2 to guide wall 4b as the outside wall surface of outside portion, the opposed part maximum by opening 14 is forming the opposed part minimum of 180 degree with roller 13.

Following according to Fig. 4, the action of the rotary connector that main explanation constitutes like this.And, in Fig. 4, omit stator 1 and the rotor 2 that comprises 5a of urceolus portion and inner cylinder portion 7b.

Fig. 4 (a) expression flat cable 3 almost is winding to the rolling-in state on the outer wall of inner cylinder portion 7b entirely, if make rotor 2 from (arrow A direction) rotation counter clockwise of this rolling-in state, then the 3a of counter-rotating portion of flat cable 3 is according to moving to counter-clockwise direction than rotor 2 little rotation amounts, so follow the tracks of the 3a of this counter-rotating portion, roller 13 and support 4 also move to counter-clockwise direction, shown in Fig. 4 (b), about 2 times flat cable 3 of this amount of movement is carried from the internal face side of the inner cylinder portion 7b side direction urceolus 5a of portion.Moreover, if make rotor 2 to counter rotation, then shown in Fig. 4 (c), the flat cable 3 of delivering to urceolus portion side is wound up on the outside wall surface of guide wall 4b of support 4, flat cable 3 almost all is wound up on the outside wall surface of guide wall 4b, forms the backrush state.Opposite with above-mentioned situation, if rotor 2 is rotated to clockwise direction (arrow B direction) from the uncoiling state shown in Fig. 4 (c), then flat cable 3 is from the internal face side output of the guide wall 4b side direction urceolus 5a of portion.Then, make rotor 2 further to the clockwise direction rotation, like this, shown in Fig. 4 (a), flat cable 3 almost all is wound up on the outer wall of inner cylinder portion 7b, becomes the rolling-in state.

Like this, the rotary connector that relates to the present embodiment example, flat cable 3 is in the process that becomes to the uncoiling state shown in the rolling-in state shown in Fig. 4 (a) or Fig. 4 (c), shown in Fig. 4 (b), flat cable 3 temporarily outputs to the 5a of the urceolus portion side in the outside that is positioned at support 4, on the guide wall of the support that flat cable is winding in the annulus to be disposed under the uncoiling state, compare with the circumference of the internal face of the 5a of this urceolus portion, the circumference of the outside wall surface of guide wall 4b is very short, so, can shorten the length of required flat cable 3 significantly.

Following with reference to Fig. 5, describe the shortening effect of this flat cable 3 in detail.Fig. 5 (a) is wound up into flat cable in the urceolus portion and forms the old-fashioned rotary connector of reeling condition, Fig. 5 (b) relates to flat cable is wound up into the rotary connector that forms the present embodiment example of reeling condition on the guide wall of support, in these two kinds of rotary connectors, if the internal diameter (diameter dimension of rolling-in state) in the path of supposition flat cable is r; The external diameter in the path of flat cable (diameter dimension of reeling condition) is R; The limited revolution of rotor is N, and the length L of then required flat cable 3 can be obtained according to (L/r π)+(L/R π)=N, becomes following formula

L＝rR×Nπ/(r+R)......(1)，

In the formula, internal diameter r is equivalent to the external diameter of the inner cylinder portion of rotor, has inserted in this inner cylinder portion on the structure of steering spindle, and about internal diameter r, the rotary connector shown in Fig. 5 (a) is identical with the rotary connector shown in Fig. 5 (b).And about external diameter R, under the situation of the rotary connector shown in Fig. 5 (a), what be equivalent to external diameter R is the internal diameter of urceolus portion; Under the situation of the rotary connector shown in Fig. 5 (b), what be equivalent to external diameter R is the external diameter of guide wall, littler than the internal diameter of urceolus portion.So, from above-mentioned formula (1), as can be seen, compare with the past example shown in Fig. 5 (a), the present embodiment example shown in Fig. 5 (b), R is much smaller for its external diameter, can guarantee that the limited revolution N of rotor 2 is certain, can shorten the length L of flat cable 3 again.For example if the external diameter of inner cylinder portion is set at 50mm; The internal diameter of urceolus portion is set at 100mm; The external diameter of guide wall is set at 70; The limited revolution of rotor is 6 times, then under the situation of old-fashioned rotary connector, if r=50mm, R=100mm and N=6 are updated in the above-mentioned formula (1), and L=628mm then.In contrast to this, under the situation of the rotary connector of present embodiment example, if r=50mm, R=70mm, N=6 are updated in the above-mentioned formula (1), L=549.5 then can make the length L shortening 78.5mm of required flat cable 3.

And, in above-mentioned execution mode example, illustrated on the ring-shaped flat board 4a of support 4 and erected the situation that the continuous guide wall 4b that makes progress in week is set, as shown in Figure 6 also can be the guide wall that is dispersed in the dispersion that makes progress in week as guide wall 4b, in the case, also can be wound up into flat cable 3 on the outer peripheral face of guide wall 4b and the roller 13 and form toroidal.And, the illustrated shape of the outer wall of guide wall 4b is not limited in cylindrical shape, as shown in Figure 7, guide wall 4b as the non-circular shape that constitutes by annulus 4b1 and restrictions 4b2, the major part of surrounding inner cylinder portion 7b with annulus 4b1, also can make simultaneously restrictions 4b2 from the two ends of annulus 4b1 two side-prominent to roller 13.In the case, flat cable 3 is wound up on the annulus 4b1 and restrictions 4b2 and roller 13 of guide wall 4b, forms egg type.

And, in above-mentioned execution mode example, the rotary connector that utilizes a slice flat cable being described, but self-evident, the present invention is also applicable to the dual convoluted rotary connector of 2 flat cables of overlapping use.

Following with reference to Fig. 8～Figure 11, describe the 2nd execution mode that relates to the 3rd invention of the present invention in detail.

The difference of the 2nd execution mode and the 1st execution mode is that the former has formed on the outside wall surface of guide wall concavo-convex, so for the identical symbol of other identical members marks, its explanation is omitted.

Fig. 8 relates to the vertical view of the support of the present invention's the 2nd execution mode, and Fig. 9 is the action specification figure of rotary connector, and Figure 10 and Figure 11 are the vertical views of the variation of expression support of the present invention.

The guide wall 4b of Fig. 8 erects and is arranged on the ring-shaped flat board 4a, forms the state that the major part of pilot hole 4d is surrounded, and its inwall forms the periphery roughly concentric with pilot hole 4d, but outer wall is a lot of periphery in misalignment pilot hole 4d center.Between the inner and outer wall of this guide wall 4b, formed the hollow part 4f of concavity, utilize hollow part 4f can alleviate the weight of support 41 integral body.Moreover, on the major part of the outside wall surface of guide wall 4b, having formed jog 4g, this jog 4g along the circumferential direction alternatively gets up recess and protuberance continuously and forms.And the part of guide wall 4b is excised on ring-shaped flat board 4a, erects fulcrum 4c cylindraceous is set in this notch part.Roller 13 is supported and can be rotated freely by this fulcrum 4c, the 3a of counter-rotating portion of above-mentioned flat cable 3 be positioned at roller 13 and and the side of its opposed guide wall 4b between opening 14 (referring to Fig. 9).So, the distance from the pivot of rotor 2 to the outside wall surface of guide wall 4b, near the part maximum of the opening 14 by supporting roller 13 forms the opposed part minimum of 180 degree with roller 13.

As shown in Figure 9, flat cable 3 becomes the reeling condition shown in the rolling-in state shown in Fig. 9 (a) or Fig. 9 (c) midway, shown in Fig. 9 (b), flat cable 3 temporarily outputs to the 5a of urceolus portion side, this urceolus portion is positioned at the outside of the guide wall 4b of support 41, on the outside wall surface of the guide wall 4b that flat cable 3 is wound up in the annulus to be disposed under reeling condition, compare with the circumferential length of the inner peripheral surface of the 5a of this urceolus portion, the circumferential length of the outside wall surface of guide wall 4b is very short, so, can shorten the length of required flat cable 3 significantly.And, on the outside wall surface of the guide wall 4b of support 41, formed a kind of jog 4g, be used to reduce contact area with flat cable 3, so, when the rolling-in that flat cable 3 is exported from the outside wall surface of guide wall 4b is moved, flat cable 3 can not cling on the outside wall surface of guide wall 4b, and is successfully exported, and can make rotor 2 and support 41 rotations freely.Especially lubricant such as filling grease in the part that stator 1 and rotor 2 and support 4 etc. and movable part slide, even this lubricant is exuded on the outside wall surface of guide wall 4b, also can be flat cable 3 output successfully from the outside wall surface of guide wall 4b when rolling-in is moved.And, under the situation of present embodiment example, except the part (minimum path portion) of the outside wall surface of guide wall 4b, formed jog 4g.But also can on the whole outside wall surface of guide wall 4b, all form jog 4g, on the internal face of guide wall 4b, also can form same jog 4g.

And the shape of guide wall 4b is not limited only to this, in a word, as long as be set at distance from the pivot of rotor 2 to the outside wall surface of guide part 4b, compare near opening 14 with other parts and gets final product for maximum.For example, as shown in Figure 10 and Figure 11,, and flat cable 3 is wound up on this guide wall 4b and the roller 13 forms egg shape, then can further alleviate support 41 if make the guide way 4b of the non-circular shape that constitutes by annulus 4b1 and restrictions 4b2.In the case, annulus 4b1 extends to circumferencial direction, forms the state that the major part of pilot hole 4d is surrounded, and, restrictions 4b2 extends to radial outside from the end of annulus 4b3, and roller 13 forms configuration state with restrictions 4b-2 by opening 14.

And, the shape of formed jog 4g and formation position etc. also are not limited only to above-mentioned execution mode example on guide wall 4b, also can be for example shown in Figure 10, it is wavy that annulus 4b1 is formed, as jog 4g, perhaps as shown in figure 11, on annulus 4b1, form a plurality of cylindric protuberances as jog 4g at interval in accordance with regulations, a plurality of hemispherical convex portions are dispersed on the outside wall surface of guide wall 4b, as jog 4g (not having diagram).In a word, as long as on the outside wall surface at least of guide wall 4b, be formed for reducing jog 4g with the contact area of flat cable 3.

Following with reference to Figure 12, the 3rd execution mode that relates to the 4th invention of the present invention is described.In the 3rd execution mode, the place different with the 1st execution mode is that rotor is not set, and makes convex wall portion and concavity wall portion form an integral body on guide wall by opening, so to the identical symbol of other identical member marks, its explanation is omitted.

Figure 12 is the oblique view of the support of the 3rd execution mode of the present invention.

The support 42 of Figure 12, the 3a of counter-rotating portion of above-mentioned flat cable 3 is positioned at this opening 14, and the convex wall 4h of portion is mutually opposed with the inner peripheral surface of the 3a of counter-rotating portion; The concavity wall 4i of portion is mutually opposed with the outer peripheral face of the 3a of counter-rotating portion.And, below ring-shaped flat board 4a on, formed the protuberance that is used to reduce with the resistance to sliding of base plate 6a, and, at the inner peripheral surface 4b of guide wall 4b ₁₀With outer peripheral face 4b ₂₀Between, formed the hollow part 4f that is used to alleviate support 42 overall weight.

Following with reference to Figure 13, describe the 4th execution mode that relates to the 5th invention of the present invention in detail.

In the 4th execution mode, with the difference of the 1st execution mode be to constitute guide wall by linking part, inner wall part and outside wall portions, so to the identical symbol of other identical members marks, its explanation is omitted.

Figure 13 is the vertical view of the support of the present invention's the 4th execution mode.

As shown in figure 13, the component part of the guide wall 4b of support 43 has: extend into ring-type and form the inner wall part 4b3 that the major part of centre bore 4d is surrounded; The conduct of extending to the outer edge of ring-shaped flat board 4a from the two ends of this inner wall part 4b3 links the concavity wall 4i of portion and the opposed walls 4j of wall; The the 1st and the 2nd outside wall portions 4b4, the 4b5 that extend to the 4b3 of wall portion respectively from the outboard end of this concavity wall 4i of portion and opposed walls 4j.These form continuously according to identical substantially wall thickness.Concavity wall 4i of portion and opposed walls 4j form opposed shape by fulcrum 4c, and roller 13 is supported by this fulcrum 4c, form the state freely that rotates.The 3a of counter-rotating portion of above-mentioned flat cable 3 roller 13 and with its mutually opposed concavity wall 4i of portion between in the opening 14 guaranteed.Form non-circular shape by opening 14 towards the outside wall surface that the flat cable 3 of the 5a of urceolus portion is wound up into inner wall part 4b3 and the 1st and the 2nd outside wall portions 4b4,4b5 from inner cylinder portion 7b.If this coiling portion is set at non-circular coiling face p, distance then from the center O (being the pivot of rotor 2) of pilot hole 4d to non-circular coiling face p, near the part maximum opening 14 of supporting roller 13, bearing of trend along the 1st and the 2nd outside wall portions 4b4,4b5 reduces gradually, and about semi-circular portions of pressing the opposed inner wall part 4b3 of 180 degree with roller 13 are minimum.

Following with reference to Figure 14 and Figure 15, describe the 5th execution mode that relates to the 6th invention of the present invention in detail.

In the 5th execution mode, with the difference of the 1st execution mode be to be provided with a plurality of columns to replace guide wall, so for the same symbol of other same members marks, its explanation is omitted.

Figure 14 is the vertical view of the support of the present invention's the 5th execution mode, and Figure 15 is the oblique view of the variation of support of the present invention.

As shown in figure 14, the guide part 4p of support 44 is by a plurality of guide finger 4m1 of cylindrical shape and overlook and be wedge shape ground continuous concavity wall 4i of portion and outside wall portions 4b4 and constitute, and above-mentioned fulcrum 4c and each guide finger 4m1 and the concavity wall 4i of portion and outside wall portions 4b1 are arranged side by side in the non-annularity region S that the pilot hole 4d on the ring-shaped flat board 4a is surrounded in accordance with regulations at interval.At this, the inner edge portion of non-annularity region S forms the center of circle circular trace S1 identical with pilot hole 4d.The outer edge of non-annularity region S forms the non-circular track S2 of the center of circle egg type different with pilot hole 4d, and each guide finger 4m1 nearly all is that the outside along circular trace S1 is arranged side by side, and remaining guide finger 4m1 is arranged side by side along the inboard of non-circular track S2.And the concavity wall 4i of portion extends to the outer edge of ring-shaped flat board 4a from circular trace S1, and outside wall portions 4b4 extends along non-circular track S2 from its outboard end, and fulcrum 4c is mutually opposed with the concavity wall 4i of portion at interval in accordance with regulations.Roller 13 is supported and can be rotated freely by this fulcrum 42, the 3a of counter-rotating portion of above-mentioned flat cable 3 rotor 3 and and its opposed concavity wall 4i of portion between in the opening 14 guaranteed.And, be wound up into along on each guide finger 4m1 and outside wall portions 4b4 of being arranged side by side in non-circular track S2 inboard by the flat cable 3 of opening 14 from inner cylinder portion 7b towards the 5a of urceolus portion, form non-circular shape.So, distance from the center O (being the pivot of rotor 2) of pilot hole 4d to non-circular track S2, near the part maximum opening 14 of supporting roller 13 reduces gradually along with leaving opening 14, differs 180 degree with roller 13 and forms opposed about semi-circular portions minimum.

Figure 15 is the oblique view of the variation of expression support 44, and is as shown in the drawing, in this support 44, not only roller 13 is supported and make its rotation freely by fulcrum 4c, and, yet path roller 16 is supported and makes its rotation freely by guide finger 4m1.So, can reduce the frictional resistance between guide finger 4m1 and the flat cable 3, so, can make flat cable 3 rolling-in more successfully or backrush during rotor 2 rotations.And roller 16 needn't carry out the axle supporting with whole guide finger 4m1, for also saving roller 16 with the few guide finger 4m1 that part disposed of the slip of flat cable 3.And, also can come shaped bracket 44 with the good synthetic resin material of sliding, adopt roller 16 to replace, perhaps on the surface of guide finger 4m1 that constitutes each guide part 4p or outside wall portions 4b4, paste sliding property material.

And, illustrated that in above-mentioned execution mode example each guide part 4p is by a plurality of guide finger 4m1 of cylindrical shape with overlook the situation that concavity wall 4i of portion and outside wall portions 4b4 for wedge shape constitute.If be arranged side by side a plurality of guide finger 4m1 on the part that is equivalent to outside wall portions 4b4, guide finger 4m1 that so can enough same shapes constitutes all guide part 4p.

Following with reference to Figure 16, the 6th execution mode that relates to the present invention's the 7th invention is described.

In the 6th execution mode, with the difference of the 1st execution mode be that guide wall is made hollow cylindrical wall, so, to other identical structures, mark identical symbol, its explanation is omitted.

Figure 16 is the vertical view of the support of the 6th execution mode of the present invention.

The hollow cylindrical wall 4n of shown in Figure 16 each disposes dispersedly, and the pilot hole 4d that forms ring-shaped flat board 4a surrounds, and each supplementary wall 4q is configured between the pair of hollow shape wall 4n of adjacency in a circumferential direction.As shown in figure 16, if the virtual inner peripheral surface that the inboard to each hollow cylindrical wall 4n is connected is set at p1, then the center of this virtual inner peripheral surface p1 is consistent with center (being the center of the inner cylinder portion 7b) O of pilot hole 4d, and each supplementary wall 4q also is arranged on the virtual inner peripheral surface p1.But, the virtual outer peripheral face that connects as if the outside to each hollow cylindrical wall 4n is set at p2, center (center of the inner cylinder portion 7d) O of the misalignment pilot hole 4d of this virtual outer peripheral face p2 then, fulcrum 4c erect on the maximum diameter part (to the longest part of distance of center O) that is arranged on virtual outer peripheral face p2.Roller 13 is supported by this fulcrum 4c and rotates freely, the 3a of counter-rotating portion of above-mentioned flat cable 3 roller 13 and and the side of its opposed hollow cylindrical wall 4n between opening 14 in.So, the distance of the virtual outer peripheral face p2 that connects to the outside from the pivot of rotor 2 to each hollow cylindrical wall 4n, near the part maximum of the opening 14 of supporting roller 13 differs 180 degree with roller 13 and forms opposed part minimum.

Following with reference to Figure 17 and Figure 18, describe the 7th execution mode that relates to the 8th invention of the present invention in detail.

In the 7th execution mode, with the difference of the 1st execution mode be on support, formed hollow part and or loss of weight portion, so to other identical members mark prosigns, its explanation is omitted.

Figure 17 is the oblique view of the support of the 7th execution mode of the present invention, and Figure 18 is the oblique view of the variation of support of the present invention.

In support shown in Figure 17 46, formed hollow part 4f all uses as loss of weight portion on formed open-work 17 and guide wall 4b on the ring-shaped flat board 4a.Utilize this open-work 17 and hollow part 45 to alleviate the weight of support 46 integral body.

The a plurality of reach through holes 18 that use as loss of weight portion have been increased on the support 47 of Figure 18.This reach through hole 18 forms the state that inner peripheral surface and outer peripheral face to guide wall 4b carry out break-through.The part of each reach through hole 18 is connected with hollow part 4f.Like this if on ring-shaped flat board 4a, form open-work 17, and on guide wall 4b, form hollow part 45 and reach through hole 18, then can utilize these 3 kinds of loss of weight portions further to alleviate the overall weight of support 47.

Following with reference to Figure 19 and Figure 20, describe the 8th execution mode that relates to the 9th invention of the present invention in detail.

Difference with the 1st execution mode in the 8th execution mode is to be provided with the 1st elastic acting force applying unit to replace formation protuberance below the ring-shaped flat board, so for the identical symbol of other identical member marks, its explanation is omitted.

Figure 19 is the oblique view of the support of the 8th execution mode of the present invention, and Figure 20 is the cutaway view with rotary connector of support of the present invention.

Support 48 has: at ring-shaped flat board 4a that installs on the base plate 6a of lid 6 and the guide wall 4b and the fulcrum 4c that erect setting on this ring-shaped flat board 4a, they are as a whole by forming synthetic resin.Ring-shaped flat board 4a has the roughly the same outside dimension of internal diameter with the 5a of urceolus portion, and a plurality of elastic tongue pieces 45 as the 1st elastic acting force applying unit on this ring-shaped flat board 4a form one with single armed beam shape.This elastic tongue piece 4r is along the circumferencial direction of ring-shaped flat board 4a uniformly-spaced forming at least more than 3 by 120 degree for example.Its front end (free end) extends to oblique below from ring-shaped flat board 4a, becomes hemispheric curved face part, the curved face part of this elastic tongue piece 4r and the top Elastic Contact of bottom surface sections 6a.Utilize its reaction force below the upper end crimping top plate portion 7a of guide wall 4b.(referring to Figure 20).And, be provided with circular pilot hole 4d at the central portion of ring-shaped flat board 4a.Insert the lower, outer perimeter face of inner cylinder portion 7b in this pilot hole 4d, like this, support 48 can be on one side and inner cylinder portion 7b sliding contact, annulus 9 in rotate on one side.

The guide wall 4b of support 48 erects and is arranged on the ring-shaped flat board 4a, forms the major part of pilot hole 4d is surrounded.Inner circumferential surface is concentric with pilot hole 4d substantially circle.The misalignment pilot hole 4d of outer peripheral face is a lot.And the part of guide wall 4b is cut on ring-shaped flat board 4a, erects to be provided with fulcrum 4c cylindraceous in this breach.Roller 13 is supported by this fulcrum 4c and rotates freely, the 3a of counter-rotating portion of above-mentioned flat cable 3 roller 13 and and the side of its opposed guide wall 4b between opening 14 in.So, the distance from the pivot of rotor 2 to the outer peripheral face of guide wall 4b, near the part maximum opening 14 of supporting roller 13 is departing from 180 degree and is forming opposed part minimum with roller 13.And, between the inner peripheral surface of guide wall 4b and outer peripheral face, formed the hollow part 4f of concavity, utilize this hollow part 4f can alleviate the overall weight of support 48.

Like this, relate to the rotary connector of present embodiment, on the ring-shaped flat board 4a of support 48, make a plurality of elastic tongue piece 4r form one, make the curved face part of front end of this elastic tongue piece 4r and the top Elastic Contact of bottom surface sections 6a.The upper end of the guide wall 4b of the setting that erects is crimped into below the top plate portion 7a on ring-shaped flat board 4a, so, when applying when vibration from the outside in the rotating shaft direction of rotor 2, also can utilize the elastic acting force applying unit of each elastic tongue piece 4r to suppress the action that support 48 moves up and down in annulus 9, its result, can prevent that support 4 from impacting top plate portion 7a or base plate 6a with sudden force, can reduce this and impact caused abnormal sound (referring to Figure 20).

Following with reference to Figure 21 and Figure 22, the 9th execution mode that relates to the 10th invention of the present invention is described.

In the 9th execution mode, be below the ring-shaped flat board, to have formed the 2nd elastic acting force applying unit and guide wall according to the height on can not reaching below the top plate portion in order to replace protuberance α with the difference of the 1st execution mode.So, for other identical members, then marking identical symbol, its explanation is omitted.

Figure 21 is the key diagram of the bound fraction of the support of the 9th execution mode and rotor, and Figure 22 is the cutaway view with rotary connector of support of the present invention.

Rotor 2 is the movable parts that are connected with the steering wheel side, and this rotor 2 is made of plastic upper rotor 7 and lower rotor 8.Upper rotor 7 has the top plate portion 7a of ring-type and from the sagging inner cylinder portion 7b of its centre, erects on top plate portion 7a upside incorporating section 7c is set, and inner cylinder portion 7b forms hollow-core construction, and its internal diameter size can make steering spindle insert.As shown in figure 21, the bottom of inner cylinder portion 7b is minor diameter part 7d, and this inner cylinder portion 7b is connected by stage portion 7e with minor diameter part 7d.The outside dimension of inner cylinder portion 7b is set to bigger than the centre bore 6c of base plate 6a.But it is slightly littler than centre bore 6c that the outside dimension of minor diameter part 7d is set to.On the other hand, lower rotor 8 is the cylindrical body with flange part 8a, and this lower rotor 8 is inserted from the centre bore 6c of lid 6, combines with the inner peripheral surface of inner cylinder portion 7b is quick, like this rotor 2 is connected to respect to stator 1 rotation freely.And, under this connecting state, utilize the 5a of urceolus portion of stator 1 side and the item board 7a and the inner cylinder portion 7b of base plate 6a and rotor 2 sides, form the annulus of overlooking to ring-type 9.

The base plate 6a that support 49 shown in Figure 21 has lid 6 goes up the guide wall 4b and the fulcrum 4c of the setting that erects on set ring-shaped flat board 4a and this ring-shaped flat board 4a, and these are configured as one by synthetic resin.Ring-shaped flat board 4a has the roughly the same outside dimension of internal diameter with the 5a of urceolus portion, and a plurality of elastic tongue piece 4r as the 2nd elastic acting force applying unit on this ring-shaped flat board 4a form one with single armed beam shape.This elastic tongue piece 4r on the circumferencial direction of ring-shaped flat board 4a by uniformly-spaced forming at least more than 3, under the situation of present embodiment example, 3 elastic tongue piece 4r uniformly-spaced forming on ring-shaped flat board 4a by 120 degree, the front end of each elastic tongue piece 4r (free end) extends to oblique below from ring-shaped flat board 4a, forms hemispheric curved face part.And, be provided with circular pilot hole 4d in the centre of ring-shaped flat board 4a, this pilot hole 4d is set on the minor diameter part 7d of upper rotor 7, arrive on the stage portion 7e, can make support 49 like this is that the center rotates in annulus 9 with inner cylinder portion 7b.In the case, as shown in figure 21, between the flange part 8a of the stage portion 7e of upper rotor 7 and lower rotor 8, clamping ring-type flat part 4a and base plate 6a, the power effect that the curved face part of each elastic tongue piece 4r is in p1 down with the state of the top formation Elastic Contact of base plate 6a, so, on ring-shaped flat board 4a, be subjected to the reaction force p2 that makes progress that comes from p1.The circumference of pilot hole 4a is by the power of p2 and be crimped on stage portion 7e.

Like this, the rotary connector that relates to the present embodiment example, on rotor 2, formed the minor diameter part 7d that is connected with stage portion 7e by inner cylinder portion 7b, on the ring-shaped flat board 4a of support 4, form one each elastic tongue piece 4r front end and carry out Elastic Contact above the base plate 6a, be plugged into the circumference of the pilot hole 4a on the minor diameter part 7d like this, utilization is crimped on the stage portion 7e from the next reaction force of each elastic tongue piece 4r, so when applying when vibration from the outside to the rotating shaft direction of rotor 2, also can suppress the action that support 4 moves up and down in annulus 9, can reduce that support 4 impacts top plate portion 7a and base plate 6a and the noise that produces.

And, in the present embodiment example, guide wall 4b ' forms and compares the state that highly reduces with guide wall 4b among Figure 20, as shown in figure 20, each elastic tongue piece 4r under the effect of p1 power with carry out above the bottom surface sections 6a under the state of Elastic Contact, when the reaction force p2 that comes from p1 upwards does the time spent, carry out crimping at the circumference of pilot hole 4d in the power that stage portion 7e sentences p2, the height of formation can not reach top plate portion 7a below.

Following with reference to Figure 23, the 10th execution mode that relates to the 11st invention of the present invention is described.

Difference with the 1st execution mode in the 10th execution mode is to be provided with sliding property thin slice between support and base plate, so for other the identical symbol of same structure mark, its explanation is omitted.

Figure 23 is the cutaway view that adopts the rotary connector of the present invention's the 10th execution mode.

In Figure 23, be positioned at top the 1st slip thin slice 19 of having pasted of the base plate 6a on the lower open end of annulus 9, pasted the 2nd sliding property thin slice 20 below the top plate portion 7a on the upper, open end that is positioned at annulus 9.The the 1st and the 2nd sliding property thin slice 19,20 is made of the good synthetic resin thin slice of cunnings such as polytetrafluoroethylene, under the situation of present embodiment example, this cunning thin slice 19,20 directly sticks on base plate 6a and the top plate portion 7a, as required, also can be and 2 sliding property thin slices 19,20 are pasted on base plate 6a and the top plate portion 7a by no illustrated sheet elastomers such as sponges.

The protruding 4e of the support 50 of Figure 23 contacts with the top East China of the 1st sliding property thin slice 10.

Like this, the rotary connector that relates to the present embodiment example, with the opposed base plate 6a of ring-shaped flat board 4a of support 4 on paste the 1st sliding property thin slice 19, so, when the rolling-in of flat cable 3 or coiling action, support 4 slides on the 1st sliding property thin slice 19 on one side, on one side rotation in annulus 9, can reduce the ear-piercing slip sound that produces from the abutment portion of support 4 and base plate 6a.And, below ring-shaped flat board 4a, formed a plurality of protruding 4e, so, can reduce the frictional resistance with the 1st sliding property thin slice 19 significantly, can make support 4 rotations freely.Moreover, be positioned at following stickup the 2nd sliding property thin slice 20 of the top plate portion 7a on the upper, open end of annulus 9, so, flat cable 3 is slided the sliding contact of property thin slice with the 2nd on one side when its rolling-in or coiling action, carry out displacement on one side, also can reduce the ear-piercing friction sound of the abutting part branch generation of flat cable 3 and top plate portion 7a.

Following with reference to Figure 24, the 1st execution mode that relates to the 12nd invention of the present invention is described.

Difference with the 1st execution mode in the 11st execution mode is to have elastic pressuring plate in the urceolus portion of stator, so for the identical symbol of other identical member marks, its explanation is omitted.

Figure 24 is the vertical view of the support of the 11st execution mode of the present invention.

On the 5a of urceolus portion of the stator 1 (shell 5) of Figure 24, with the 3 slice elastic pressuring plates 21 of single armed beam shape supporting by forming synthetic resin, each elastic pressuring plate 21 extends to the inner face of annulus 9, with flat cable 3 Elastic Contact.As shown in figure 24, formed the 21a of support sector at one of this elastic pressuring plate 21 on distolateral with hole, be pressed into the hole of the 21a of this support sector on formed pillar on the 5a of urceolus portion, like this, each elastic tongue piece 21 is uniformly-spaced supported by the 5a of urceolus portion according to about 120 degree.This elastic tongue piece 21 is bent to the akin curvature of inwall with the 5a of urceolus portion, and each elastic pressuring plate 21 has the ejection force of the direction on the outer peripheral face that is crimped onto guide wall 4b.

Following according to Fig. 4, describe the action of the rotary connector that constitutes like this in detail.And in Fig. 4, omitted stator 1 and the rotor 2 that comprises 5a of urceolus portion and inner cylinder portion 7b, in order to simplify accompanying drawing, omitted elastic pressuring plate 21.

Fig. 4 (a) expression flat cable 3 almost is winding to the rolling-in state on the outer wall of inner cylinder portion 7b entirely, and at this moment, each elastic pressuring plate 21 that diagram is omitted is crimped on the outside wall surface of guide wall 4b of support 4.If rotor 2 is rotated to counter-clockwise direction of rotation (arrow A direction) from this rolling-in state, then the 3a of counter-rotating portion of flat cable 3 is according to moving to counter-clockwise direction of rotation than rotor 2 little rotation amounts, so, follow the tracks of the 3a of this counter-rotating portion, roller 13 and support 4 are also moved to counter-clockwise direction of rotation, shown in Fig. 4 b, the about 2 times flat cable 3 of this amount of movement is exported from the inner peripheral surface side of the inner cylinder portion 7b side direction urceolus 5a of portion, if make rotor 2 further to counter rotation, then shown in Fig. 4 (c), the flat cable 3 that outputs to the inner peripheral surface side of the 5a of urceolus portion is winding on the outer peripheral face of guide wall 4b of support 4, finally make flat cable 3 become the uncoiling state, promptly flat cable 3 almost is winding on the outer peripheral face of guide wall 4b entirely.And, each elastic pressuring plate 21 that diagram is omitted is along with the radial displacement of this flat cable 3, make the fixing distolateral strain that on fulcrum, produces, for example in the way of the coiling shown in Fig. 4 (b), be pressed against together on the inwall side of the 5a of urceolus portion with flat cable 3, under the reeling condition shown in Fig. 4 (c), be crimped on the outer peripheral face of the flat cable 3 that is wound up on the guide wall 4b.And, opposite with above-mentioned situation, if rotor 2 is rotated to clockwise direction (arrow B direction) from the reeling condition shown in Fig. 4 (c), then flat cable 3 is after the inner peripheral surface side output of the guide wall 4b side direction urceolus 5a of portion, make rotor 2 again to the clockwise direction rotation, like this, shown in Fig. 4 (a), flat cable 3 almost is winding on the outer wall of inner cylinder portion 7b entirely, becomes the rolling-in state.In the case, also be that each elastic tongue piece 21 of diagram abridged makes the fixing distolateral strain that produces along with the radial displacement of flat cable 3 on fulcrum.

Like this, relate in the rotary connector of present embodiment example, a plurality of elastic pressuring plates 21 that the inner face of subtend annulus 9 extends on the 5a of urceolus portion of stator 1 support, utilize the ejection force of this elastic pressuring plate 21 flat cable 3 to be pressed on the outer peripheral face of guide wall 4b, so, even apply vibration radially to annulus 9 from the outside to rotary connector, the flat cable 3 that also can suppress to be arranged in the rolling-in way or the way of reeling moves carelessly at annulus 9, can reduce because of flat cable 3 and shake the rustling sound that produces.And, because along the circumferencial direction of the 5a of urceolus portion according to about 120 degree uniformly-spaced dispose 3 elastic tongue pieces 21, so, can be balancedly flat cable 3 be applied elastic acting force to the center position of annulus 9.Moreover, elastic pressuring plate 21 is bent to form the curvature of the inwall that is similar to the 5a of urceolus portion, the hole of the formed 21a of support sector on one end of this elastic tongue piece 21 is pressed into the 5a of urceolus portion goes up on the formed pillar, like this, utilize the 5a of urceolus portion with cantilever beam state support elastic tongue piece 21, so, can make elastic pressuring plate 21 be easy to be installed in the 5a of urceolus portion.

And, in above-mentioned execution mode example, the situation that is supported 3 elastic pressuring plates 21 by the 5a of urceolus portion has been described, but self-evident, the sheet number of elastic pressuring plate 21 is not limited in this.

And, in above-mentioned execution mode example, the rotary connector with a slice flat cable being described, but self-evident, the present invention is also applicable to the dual convoluted rotary connector of overlapping use 2 flat cables.

Following with reference to Figure 25 to Figure 29, the 12nd execution mode that relates to the 13rd invention of the present invention is described.

In the 12nd execution mode, with the difference of the 1st execution mode be: adopt the guide way of overlooking to C word shape in order to replace support, and on base plate, be provided with guide groove, so, for other identical members, mark identical symbol, its explanation is omitted.

Figure 25 relates to the cutaway view of the rotary connector of the present invention's the 12nd execution mode example.Figure 26 is the oblique view of guide way of the present invention.Figure 27 is the action specification figure of rotary connector of the present invention.Figure 28 is the oblique view of the variation of guide way of the present invention.Figure 29 is the key diagram of the elastic tongue piece that has of guide way of the present invention.

Around the centre bore 6c of stator 1, formed the circular 6d of guide groove portion.

And, plastic guide way 50, its monolithic molding is the C word shape for overlooking, portion has formed the reach through hole 50a that overlooks to circle in the central.Insert the outer peripheral face of inner cylinder portion 7b in this reach through hole 50a, guide way 50 is installed on the base plate 6a of lid 6, can rotate in annulus 9.The internal face 4t of this guide way 50 forms its center of circle periphery identical with reach through hole 50a.But the outside wall surface 4u of guide way 50, the center of its misalignment reach through hole 50a is a lot, and at this offset the best part place, internal face 4t and outside wall surface 4u are communicated with by opening 14.That is to say that the distance from the pivot of rotor 2 to guide way 50 outside wall surface 4u is compared near opening 14 maximumly with other parts, the 3a of counter-rotating portion of above-mentioned flat cable 3 is positioned at this opening 14 (referring to Figure 27).And, on the lower end of the internal face 4t of guide way 50, having formed protuberance 4s, this protuberance 4s goes up in the formed guide groove 6d with the base plate 6a that the state freely of sliding is inserted into lid 6.Moreover, between the internal face 4t and outside wall surface 4u of guide way 50, formed the hollow part 4v of concavity, utilize this hollow part 4v to alleviate the overall weight of guide way 50.

Following according to Figure 27, describe the action of the rotary connector that constitutes like this in detail.And, in Figure 27, omitted the stator 1 and the rotor 2 that comprise 5a of urceolus portion and inner cylinder portion 7b.

Figure 27 (a) expression flat cable 3 almost all is wound up into the rolling-in state on the outer peripheral face of inner cylinder portion 7b, if rotor 2 is rotated to counter-clockwise direction (arrow A direction) from this rolling-in state, the 3a of counter-rotating portion that then is positioned at the flat cable 3 of opening 15 moves to counter-clockwise direction according to the rotation amount that lacks than rotor 2, so, following the tracks of the 3a of this counter-rotating portion also moves guide way 4 to counter-clockwise direction, shown in Figure 27 (b), about 2 times flat cable 3 of this amount of movement is exported to the inner peripheral surface side of the 5a of urceolus portion by the opening 14 of guide way 4 from inner cylinder portion 7b.Moreover, if make rotor 2 to counter rotation, then shown in Figure 27 (c), be winding on the outside wall surface 4u of guide way 51 to the flat cable 3 of urceolus portion side output, finally make flat cable 3 become reeling condition on the outside wall surface 4u that almost is winding to guide way 51 entirely.Opposite with above-mentioned situation, if rotor 2 is rotated to clockwise direction (arrow B direction) from the reeling condition shown in Fig. 4 (c), then flat cable 3 is exported to the inner peripheral surface side of the 5a of urceolus portion from the outside wall surface 4u of guide way 51, then, rotor 2 is rotated to clockwise direction, like this, shown in Figure 27 (a), flat cable 3 becomes the rolling-in state on the outer peripheral face that almost all is winding to inner cylinder portion 7b.

Like this, in the rotary connector that relates to the present embodiment example, in flat cable 3 becomes way for the uncoiling state shown in the rolling-in state shown in Figure 27 (a) or Figure 27 (c), flat cable 3 temporarily outputs to the inner peripheral surface side of the 5a of urceolus portion shown in Figure 27 (b), the 5a of this urceolus portion compares with guide way 4 and is positioned at the outside, on the outside wall surface 4b of the guide way 50 that flat cable 3 is winding in the annulus to be disposed under reeling condition, compare with the circumference of the inner peripheral surface of the 5a of this urceolus portion, the circumferential length of the outside wall surface 4u of guide way 50 is very short, so can shorten the length of required flat cable 3 significantly.And, guide way 50 is formed overlook word shape into C, the misalignment of outside wall surface 4u internal face 4t cylindraceous makes from the outstanding protuberance 4S in the internal face 4t lower end of this guide way 50, goes up formed circular guide groove 6d with slip state freely with base plate 6a and combines.So, can either shorten the footpath size of guide way 50, weight reduction can make guide way 50 rotate freely in annulus 9 again.And, under the situation of present embodiment example, on the whole lower end of the internal face 4t of guide way 50, formed protuberance 4S continuously, but also can be along the intermittent a plurality of protuberance 4S that disperse in the lower end of internal face 4t.

Figure 28 is the oblique view of the variation of expression guide way 50.On the internal face 4t upper end of this guide way 50, a plurality of elastic tongue piece 4w as the 3rd elastic acting force applying unit form one with single armed beam state.This elastic tongue piece 4w forms more than 3 or 3 at least along the circumferencial direction of internal face 4t, for example by 3 of the 120 uniformly-spaced formation of spending.Its front end (free end) is outstanding from the top of internal face 4t, becomes hemispheric curved face part.As shown in figure 29, carry out Elastic Contact below the top plate portion 7a of the curved face part of each elastic tongue piece 4w and upper rotor 7, so utilize reaction force to make the upper face side of 50 couples of base plate 6a of guide way apply elastic acting force.The protuberance 4s that forms in the internal face 4t lower end of guide way 50 is crimped on the inner bottom surface of guide groove 6d.So, when from the outside when the rotating shaft direction of rotor 2 applies oscillating action, also can utilize the elastic acting force of each elastic tongue piece 4w, suppress the action that guide way 50 moves up and down in annulus 9, its result, can prevent guide way 50 upper end intense impact top plate portion 7a below, can reduce this and impact caused abnormal sound.

Claims (41)

1, a kind of rotary connector is characterized in that having: stator has urceolus portion; Rotor links freely with the rotation of this stator, has inner cylinder portion, forms annulus between this inner cylinder portion and the above-mentioned urceolus portion; Flat cable leaves in the above-mentioned annulus with the state of the coiling direction that reverses halfway, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And, support, rotation is configured in the above-mentioned annulus freely, has the opening that the counter-rotating portion that makes above-mentioned flat cable passes through,

On above-mentioned support, have the guide part that surrounds above-mentioned inner cylinder portion as cardinal extremity, set for: compare with other parts to the distance of the outside portion of above-mentioned guide part from the pivot of above-mentioned rotor, near above-mentioned opening, reach maximum with above-mentioned opening.

2, rotary connector as claimed in claim 1 is characterized in that, above-mentioned guide part is for surrounding the guide wall that above-mentioned inner cylinder portion ground extends.

3, rotary connector as claimed in claim 2, it is characterized in that, above-mentioned guide wall has outer peripheral face cylindraceous, by above-mentioned opening towards the above-mentioned flat cable of above-mentioned urceolus portion under state with respect to the pivot off-centre of above-mentioned rotor, be wound on the above-mentioned guide wall with toroidal.

4, rotary connector as claimed in claim 2, it is characterized in that, above-mentioned guide wall has near restrictions that is positioned at the above-mentioned opening and the annulus that the major part of above-mentioned inner cylinder portion is surrounded, and the flat cable by above-mentioned opening towards above-mentioned urceolus portion is wound on the above-mentioned guide wall with non-circular shape.

5, rotary connector as claimed in claim 3 is characterized in that, near the above-mentioned opening of above-mentioned support roller is carried out axle supporting, and the above-mentioned flat cable by above-mentioned opening towards above-mentioned urceolus portion is wound up on above-mentioned roller and the above-mentioned guide wall.

6, rotary connector as claimed in claim 5, it is characterized in that, above-mentioned support has outside dimension and the roughly the same ring-shaped flat board of above-mentioned urceolus portion's internal diameter, on this ring-shaped flat board above-mentioned roller is carried out axle supporting, and erects above-mentioned guide wall is set.

7, rotary connector as claimed in claim 2 is characterized in that, has formed the jog that is used to reduce with the contact area of above-mentioned flat cable on the outside wall surface of above-mentioned guide wall.

8, rotary connector as claimed in claim 7 is characterized in that, above-mentioned jog is made of the recess and the protuberance that circumferentially alternately form along the above-mentioned outside wall surface of above-mentioned guide wall.

9, rotary connector as claimed in claim 7, it is characterized in that, above-mentioned guide wall has outside wall surface, and this outside wall surface is with respect to forming concentric internal face off-centre of extending circularly with inner cylinder portion, and has formed the blank part of concavity between the internal face of this guide wall and outside wall surface.

10, a kind of rotary connector is characterized in that having: stator has urceolus portion; Rotor links freely with the rotation of this stator, has inner cylinder portion, forms annulus between this inner cylinder portion and the above-mentioned urceolus portion; Flat cable leaves in the above-mentioned annulus with the state of the coiling direction that reverses halfway, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And, support, rotation is configured in the above-mentioned annulus freely,

On above-mentioned support, has guide wall, the outer peripheral face of this guide wall is with respect to forming concentric inner peripheral surface off-centre of extending circularly with inner cylinder portion, at the maximum diameter of this guide wall the opening that the counter-rotating portion that makes above-mentioned flat cable passes through is set partly, and, on above-mentioned guide wall integrally formed by above-mentioned opening opposed convex wall portion and concavity wall portion.

11, a kind of rotary connector is characterized in that having: stator has urceolus portion; Rotor links freely with the rotation of this stator, has inner cylinder portion, forms annulus between this inner cylinder portion and the above-mentioned urceolus portion; Flat cable leaves in the above-mentioned annulus with the state of the coiling direction that reverses halfway, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And, support, rotation is configured in the above-mentioned annulus freely, has the opening that the counter-rotating portion that makes above-mentioned flat cable passes through,

On above-mentioned support, have to circumferential extension and surround the most inner wall part of above-mentioned inner cylinder portion and the binding wall that extends from this inner wall part along above-mentioned opening one side direction foreign side and from the outboard end of this bindings wall outside wall portions to above-mentioned inner wall part extension, above-mentioned flat cable by above-mentioned opening, is wound up into the above-mentioned inner wall part and the above-mentioned outside wall portions of above-mentioned support from above-mentioned inner cylinder portion with non-circular shape.

12, rotary connector as claimed in claim 11, it is characterized in that, above-mentioned support have outside dimension substantially with the identical ring-shaped flat board of internal diameter of above-mentioned urceolus portion, on this ring-shaped flat board, erect and be provided with above-mentioned inner wall part and above-mentioned binding wall and above-mentioned outside wall portions.

13, rotary connector as claimed in claim 11 is characterized in that, rotates earth's axis supporting roller freely on above-mentioned support, and makes above-mentioned roller by above-mentioned opening and with to link wall mutually opposed.

14, rotary connector as claimed in claim 13, it is characterized in that, on above-mentioned support, be provided with by above-mentioned opening and above-mentioned roller and with the opposed opposed walls of above-mentioned binding wall, the medial end of this opposed walls is connected with above-mentioned inner wall part, and another outside wall portions of extending towards above-mentioned inner wall part in the outboard end setting of above-mentioned opposed walls.

15, a kind of rotary connector is characterized in that having: stator has urceolus portion; Rotor links freely with the rotation of this stator, has inner cylinder portion, forms annulus between this inner cylinder portion and the above-mentioned urceolus portion; Flat cable leaves in the above-mentioned annulus with the state of the coiling direction that reverses halfway, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And, support, rotation is configured in the above-mentioned annulus freely, has the opening that the counter-rotating portion that makes above-mentioned flat cable passes through,

Possessing to have on above-mentioned support makes above-mentioned inner cylinder portion insert the ring-shaped flat board of logical centre bore; Be arranged side by side a plurality of columns at this ring-shaped flat board, so that above-mentioned centre bore is surrounded, and the distance that makes these columns be distributed to the pivot that leaves above-mentioned rotor reaches near above-mentioned opening in the non-annularity zone of maximum, above-mentioned flat cable, is wound up on the above-mentioned column that is positioned on the outer edge, above-mentioned non-annularity zone with non-circular shape by above-mentioned opening from above-mentioned inner cylinder portion.

16, rotary connector as claimed in claim 15 is characterized in that, the part of above-mentioned column is made the continuous wedge shape in outer edge, zone from above-mentioned opening along above-mentioned non-annularity, and other columns are made into cylindrical shape.

17, rotary connector as claimed in claim 15 is characterized in that, roller is carried out axle supporting and make its rotation freely with part or all of above-mentioned each column.

18, a kind of rotary connector is characterized in that having: stator has urceolus portion; Rotor links freely with the rotation of this stator, has inner cylinder portion, forms annulus between this inner cylinder portion and the above-mentioned urceolus portion; Flat cable leaves in the above-mentioned annulus with the state of the coiling direction that reverses halfway, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And, plastic support, rotation is configured in the above-mentioned annulus freely,

On above-mentioned support, have a plurality of hollow cylindrical wall, this hollow cylindrical wall is dispersed in week upwards, above-mentioned inner cylinder portion is surrounded, the virtual inner peripheral surface that links these hollow cylindrical wall inboards is set at the toroidal roughly concentric with above-mentioned inner cylinder portion, and, make the virtual outer peripheral face that links above-mentioned each hollow cylindrical wall outside with respect to above-mentioned inner cylinder portion center off-centre, partly be provided with the opening that the counter-rotating portion that makes above-mentioned flat cable passes through at the maximum diameter of this virtual outer peripheral face.

19, rotary connector as claimed in claim 18 is characterized in that, above-mentioned support has the ring-shaped flat board with the roughly the same outside dimension of above-mentioned urceolus portion internal diameter, erects on this ring-shaped flat board and is provided with each hollow cylindrical wall.

20, rotary connector as claimed in claim 18 is characterized in that, has supplementary wall respectively between above-mentioned each hollow cylindrical wall of above-mentioned support, and these supplementary wall are arranged on the above-mentioned virtual inner peripheral surface.

21, a kind of rotary connector is characterized in that having: stator has urceolus portion; Rotor links freely with the rotation of this stator, has inner cylinder portion, forms annulus between this inner cylinder portion and the above-mentioned urceolus portion; Flat cable leaves in the above-mentioned annulus with the state of the coiling direction that reverses halfway, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And, plastic support, rotation is configured in the above-mentioned annulus freely,

On above-mentioned support, has the ring-shaped flat board, the outside dimension of this ring-shaped flat board internal diameter with above-mentioned urceolus portion substantially is identical, on this ring-shaped flat board, erect guide wall is set, the outer peripheral face of this guide wall is with respect to forming concentric inner peripheral surface off-centre of extending circularly with above-mentioned inner cylinder portion, and the opening that the counter-rotating portion that makes above-mentioned flat cable passes through partly is set at the maximum diameter of this guide wall, and, formed the loss of weight portion of removing the synthetic resin material at least one side in above-mentioned ring-shaped flat board and above-mentioned guide wall.

22, rotary connector as claimed in claim 21 is characterized in that, above-mentioned loss of weight portion is formed in the inner peripheral surface of above-mentioned guide wall and the hollow part of the concavity between the outer peripheral face.

23, rotary connector as claimed in claim 21 is characterized in that, above-mentioned loss of weight portion is the inner peripheral surface of the above-mentioned guide wall of break-through and a plurality of reach through holes of outer peripheral face.

24, rotary connector as claimed in claim 21 is characterized in that, above-mentioned loss of weight portion is a plurality of open-works of the plate face of the above-mentioned ring-shaped flat board of break-through.

25, a kind of rotary connector is characterized in that having: stator has base plate and urceolus portion; Rotor has top plate portion and inner cylinder portion, and rotation is attached on this stator freely; Flat cable is installed in the annulus that forms between these stators and rotor with the state of the coiling direction that reverses halfway, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And, plastic support, rotation is configured in the above-mentioned annulus freely,

On above-mentioned support, have and the opposed ring-shaped flat board of above-mentioned base plate, the outside dimension of this ring-shaped flat board is identical with above-mentioned urceolus portion internal diameter substantially, on this ring-shaped flat board, erect guide wall is set, the outer peripheral face of this guide wall is with respect to forming concentric inner peripheral surface off-centre of extending circularly with above-mentioned inner cylinder portion, and the opening that above-mentioned flat cable counter-rotating portion is passed through is set partly at the maximum diameter of this guide wall, and, on at least one side of above-mentioned base plate and above-mentioned ring-shaped flat board, be provided with the elastic acting force applying unit, be used to apply and make both active forces to away from each other direction.

26, rotary connector as claimed in claim 25, it is characterized in that, above-mentioned elastic acting force applying unit constitutes by be the integrally formed elastic tongue piece in cantilever beam shape ground on above-mentioned ring-shaped flat board, makes the free end and the above-mentioned base plate Elastic Contact of this elastic tongue piece.

27, rotary connector as claimed in claim 26 is characterized in that, above-mentioned elastic tongue piece forms 3 at least along the circumferencial direction of above-mentioned ring-shaped flat board.

28, rotary connector as claimed in claim 26 is characterized in that, is formed with curved face part on the free end of above-mentioned elastic tongue piece.

29, a kind of rotary connector has: stator has base plate and urceolus portion; Rotor has top plate portion and inner cylinder portion, and rotation is attached on the said stator freely; Flat cable is installed in the annulus that forms between these stators and rotor with the state of the coiling direction that reverses halfway, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And support, rotation is configured in the above-mentioned annulus freely, has with the opposed ring-shaped flat board of above-mentioned base plate and erect the guide wall that is arranged on this ring-shaped flat board the counter-rotating portion of the above-mentioned flat cable of configuration in the opening that is provided with on the above-mentioned guide wall

It is characterized in that, the internal face of above-mentioned guide wall is formed and the concentric toroidal of circular reach through hole that is arranged on above-mentioned ring-shaped flat board central authorities, and, compare with other parts to the distance of the outside wall surface of above-mentioned guide wall from the pivot of above-mentioned rotor, maximum near above-mentioned opening, and, on above-mentioned rotor, form by stage portion and with the continuous minor diameter part of above-mentioned inner cylinder portion, and at least one side in above-mentioned ring-shaped flat board and above-mentioned base plate the elastic acting force applying unit is set, be used for the circumference that is inserted into the above-mentioned minor diameter part of above-mentioned reach through hole is crimped onto above-mentioned stage portion.

30, rotary connector as claimed in claim 29, it is characterized in that, above-mentioned ring-shaped flat board has the roughly the same outside dimension of internal diameter with above-mentioned urceolus portion, above-mentioned elastic acting force applying unit is made of a plurality of elastic tongue pieces, and this elastic tongue piece is cantilever beam shape ground on this ring-shaped flat board integrally formed.

31, a kind of rotary connector is characterized in that having: stator has base plate and urceolus portion; Rotor has inner cylinder portion and top plate portion, and rotation is attached on the said stator freely; Flat cable is installed in the annulus that forms between these stators and rotor with the state of the coiling direction that reverses halfway, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And support, rotation is configured in the above-mentioned annulus freely,

On above-mentioned support, have and the opposed ring-shaped flat board of above-mentioned base plate, on this ring-shaped flat board, erect guide wall is set, the outer peripheral face of this guide wall is with respect to forming concentric inner peripheral surface off-centre of extending circularly with above-mentioned inner cylinder portion, and the opening that the counter-rotating portion that makes above-mentioned flat cable passes through partly is set at the maximum diameter of this guide wall, and, on above-mentioned base plate, lay sliding property thin slice.

32, rotary connector as claimed in claim 31 is characterized in that, the projection of formation curve form below above-mentioned ring-shaped flat board, and make this projection and the sliding contact of above-mentioned slip thin slice.

33, rotary connector as claimed in claim 31 is characterized in that, lays other sliding property thin slice below above-mentioned top plate portion.

34, a kind of rotary connector is characterized in that having: stator has base plate and urceolus portion; Rotor, rotation is attached on this stator freely, has inner cylinder portion, forms annulus between this inner cylinder portion and the above-mentioned urceolus portion; State with the coiling direction that reverses halfway leaves in the above-mentioned annulus, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And, support, rotation is arranged in the above-mentioned annulus freely,

On above-mentioned support, have and the opposed ring-shaped flat board of above-mentioned base plate, on this ring-shaped flat board, erect guide wall is set, the outer peripheral face of this guide wall is with respect to forming concentric inner peripheral surface off-centre of extending circularly with above-mentioned inner cylinder portion, and the opening that the counter-rotating portion that makes above-mentioned flat cable passes through partly is set at the maximum diameter of this guide wall, and, in above-mentioned urceolus portion, be provided with the elastic pressuring plate that the inner face to above-mentioned annulus extends.

35, rotary connector as claimed in claim 34 is characterized in that, above-mentioned elastic pressuring plate is a plurality of along circumferentially equally spaced being provided with substantially of above-mentioned urceolus portion.

36, rotary connector as claimed in claim 34 is characterized in that, makes above-mentioned elastic pressuring plate form curved shape, and an end of this elastic pressuring plate is bearing in above-mentioned urceolus portion with the cantilever beam shape.

37, a kind of rotary connector is characterized in that having: stator has base plate and urceolus portion; Rotor has inner cylinder portion and top plate portion, and rotation is attached on the said stator freely; Flat cable is installed in the annulus that forms between these stators and rotor with the state of the coiling direction that reverses halfway, and its two ends are drawn out to the outside by above-mentioned inner cylinder portion and above-mentioned urceolus portion; And guide way, rotation is configured in the above-mentioned annulus freely,

Above-mentioned guide way forms overlooks the word shape into C, the outside wall surface of this guide way is with respect to forming concentric internal face off-centre of extending circularly with above-mentioned inner cylinder portion, partly be provided with the opening that the counter-rotating portion that makes above-mentioned flat cable passes through at the maximum diameter of this guide way, and, make the outstanding protuberance from above-mentioned internal face lower end of this guide way, combine sliding freely with formed circular guide groove portion on above-mentioned base plate.

38, rotary connector as claimed in claim 37 is characterized in that, raised part is formed continuously or discontinuously along the above-mentioned internal face of above-mentioned guide way.

39, rotary connector as claimed in claim 37 is characterized in that, has formed the hollow part of concavity between the above-mentioned internal face of above-mentioned guide way and above-mentioned outside wall surface.

40, rotary connector as claimed in claim 37 is characterized in that, on the upper end and at least one side in the above-mentioned top plate portion of above-mentioned guide way, the elastic acting force applying unit is set, and is used to apply the active force that makes both directions away from each other.

41, rotary connector as claimed in claim 40, it is characterized in that, above-mentioned elastic acting force applying unit is made of a plurality of elastic tongue pieces, and the above-mentioned internal face upper end of these elastic tongue pieces and guide way forms one, makes Elastic Contact below the free end of these elastic tongue pieces and the above-mentioned top plate portion.

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