CN102765032A

CN102765032A - Electric angle grinder with function of starting locked state

Info

Publication number: CN102765032A
Application number: CN2012102200874A
Authority: CN
Inventors: 张淼; 刘贵仁
Original assignee: SHANGHAI KEN TOOLS CO Ltd
Current assignee: SHANGHAI KEN TOOLS CO Ltd
Priority date: 2012-06-29
Filing date: 2012-06-29
Publication date: 2012-11-07
Also published as: WO2014000344A1

Abstract

The invention provides an electric angle grinder with a function of starting a locked state. The electric angle grinder comprises a housing and is characterized in that a gap is reserved on an operation rod and used for allowing a drive plate to be installed in the gap; a rotary pin penetrates the drive plate which is partially exposed out of the operation rod, and the remaining part of the drive plate is positioned in the housing and is connected with an extension rod; a lug is arranged on one side of the extension rod, and a clamping part is arranged at the end part of the other side of the extension rod; a support block is arranged on the inner side of the operation rod; an extension pillar is arranged on the edge of the side of the drive plate, on which the clamping part is arranged; and an concave part is arranged at the end part of the extension pillar. The electric angle grinder provided by the invention avoids misoperation to the utmost, and meanwhile is in a locked state while being started; the workload is reduced as an operator is not required to press the operation rod frequently in the operation process, which improves the operation efficiency; and the situation that a drive motor is turned off mistakenly is avoided.

Description

A kind of with the electronic angle grinding machine of opening lock function

Technical field

The present invention relates to a kind of electronic angle grinding machine, be used for work piece is carried out grinding or grinding operation with the unlatching lock function.

Background technology

Conventional electronic angle grinding machine generally includes a housing; Head at housing is provided with an operation part that is used for workpiece is carried out grinding or grinding; Be provided with a CD-ROM drive motor that drives this operation part work at the middle part of housing; In the grip part of housing, be provided with a switch block that is used to switch this CD-ROM drive motor "on" position and off-position, below switch block, be provided with an action bars, the operating personnel operates the switch block that is positioned at housing through action bars.When CD-ROM drive motor was in "on" position, the grinding abrasive disk of operation part can be with high speed rotation, in case operating personnel's operation is improper, perhaps the operating personnel is unfamiliar with instrument, and the grinding abrasive disk of rotation is easily to causing human body to damage at a high speed.In order on to greatest extent, to prevent maloperation, be provided with a locking component at the action bars annex usually.

For example PCT number is PCT/JP2009/065295; The PCT patent that name is called " power tool " discloses a kind of with the electronic angle grinding machine of opening lock function; This electronic angle grinding machine has CD-ROM drive motor, is used to drive work piece carried out to grind cut or the emery wheel of grinding operation; Motor shell, its receipts are loaded onto and are stated CD-ROM drive motor; Back cover, it is installed in and the motor shell back-end region of above-mentioned emery wheel installation position in opposition side, and constitutes the handle portion that is made for industry personnel grasping by the said motor shell; Action bars, it carries out grasping operation by the operating personnel with hand, its for strip and be installed in the said motor shell and above-mentioned back cover this two on; Switch portion, its counterweight are in above-mentioned back cover, and this switch portion is connected with action bars through peristome, thereby and the operation through action bars produce and move the energising of carrying out above-mentioned CD-ROM drive motor and control.

In above-mentioned patent, in order to prevent the generation of maloperation, on action bars, be provided with a locking component, this locking component comprises rotating shaft, holding section and operating portion.The principle of its locking is: when being in lockup state, through the elastic reaction that spring applies, the holding section is fastened on the lug boss on the action bars, and at this moment, the operating personnel can't the operating operation bar; When operation personnel's a hand during through the operating portion rotary locking part, if when the power that the operating personnel applies has surpassed the elastic force of spring, the holding section of locking component can be left lug boss gradually; Until separating fully; At this moment, the operating personnel need use the another hand, upwards presses action bars and makes that the switch portion that is positioned at the action bars top is closed; CD-ROM drive motor gets the work of electric back, and emery wheel begins to carry out to grind to cut or grinding operation.But in operation process, the operating personnel needs always according to action bars, otherwise because the effect of spring restoring force, the holding section can be fastened on the lug boss again, makes CD-ROM drive motor quit work.

This shows,, increased operating personnel's operation burden extraly, reduced the operating efficiency of operation, and might cause CD-ROM drive motor to be stopped by mistake though above-mentioned locking component can prevent maloperation.

Summary of the invention

The purpose of this invention is to provide a kind of operating personnel's of reduction the operation burden and the electronic angle grinding machine of raising operating personnel operating efficiency.

In order to achieve the above object, technical scheme of the present invention has provided a kind of with the electronic angle grinding machine of opening lock function, comprises housing; On the operation end of housing, be provided with the operation part that is used for workpiece is carried out grinding or grinding, operation part is provided with switch block by the drive motor work of being located at housing in the holding end of housing; By switch block CD-ROM drive motor is switched to "on" position or off-position, below switch block, be provided with action bars, the two ends of action bars connect housing respectively; It is characterized in that: on action bars, be formed with the gap that is used to install dial, dial is positioned at this gap, on dial, is equipped with rotating dog; The two ends of rotating dog are the attended operation bar respectively, outside rotating dog, is with torsion spring, and dial partly is exposed to outside the action bars; The remainder of dial is positioned at housing, and this part of dial connects extension rod, on a side of extension rod, is provided with projection; On the end of its opposite side, be provided with the holding section, be provided with the back-up block that cooperates with this projection in the inboard of action bars, the side that is provided with holding section one side at dial is provided with extending column; Extending column links to each other with housing, is provided with the depressed part that matches with the holding section in the end of extending column, when dial is in when cutting out lockup state; Projection is pressed on the back-up block under the effect of torsion spring, and when dial was in the unlatching lock-out state, the holding section was fastened on the depressed part.

Preferably, be provided with at said extension rod on the end of the opposite side of said projection and be provided with guide part, the side that is provided with guide part one side at said extension rod is provided with lead, and when said dial is in when cutting out lockup state, guide part rests on the end of lead.

Preferably, said operation part comprises emery wheel, outside emery wheel, is provided with protective hood fastening device, and said CD-ROM drive motor is through the rotation of drive motor emery wheel, wherein:

Protective hood fastening device comprises and covers on the outer cover body of emery wheel and be connected the protecgulum on the said housing, at the cover body formation anchor ear that stretches out on the side end face of emery wheel dorsad, is provided with at least one boss in the inboard of anchor ear; Be provided with at least one draw-in groove at the top of protecgulum; The quantity of draw-in groove is suitable with the quantity of boss, on the outer circumference surface of protecgulum, has annular groove, and the boss of anchor ear embeds in the annular groove through draw-in groove; The tongue of pulling of spanner is located between anchor ear and the protecgulum at outside remainder; On anchor ear, have shift slot, on the part between anchor ear and the protecgulum, be provided with the gear tooth at spanner, the gear tooth is stuck in the shift slot.

Provided by the invention a kind of with the electronic angle grinding machine of opening lock function in, promptly realized the state locking of electronic angle grinding machine through simple structure, avoided the generation of maloperation to the full extent; Simultaneously, after electronic angle grinding machine is opened, realized the locking of state; The operating personnel need not often press action bars in operation process; Reduced homework burden, improved operating efficiency, and avoided CD-ROM drive motor to be taken place by the situation that mistake stops.

Description of drawings

Partial structurtes cutaway view when Figure 1A closes lockup state for a kind of electronic angle grinding machine with the unlatching lock function in the present embodiment is in;

Figure 1B is the partial enlarged drawing of Figure 1A;

Fig. 2 is the partial structurtes cutaway view after a kind of electronic angle grinding machine with the unlatching lock function in the present embodiment rotates counterclockwise knob;

Fig. 3 is the partial structurtes cutaway view after a kind of electronic angle grinding machine with the unlatching lock function in the present embodiment is pressed action bars;

Fig. 4 is a kind of partial structurtes cutaway view of opening under the lock-out state that is in the electronic angle grinding machine of opening lock function in the present embodiment;

Fig. 5 A is the exploded view of protective hood fastening device provided by the invention;

Fig. 5 B is the installation diagram of protective hood fastening device provided by the invention;

Fig. 6 A is the scheme of installation of protective hood fastening device provided by the invention;

Fig. 6 B is the protective cover that anchor ear is housed provided by the invention;

Fig. 6 C is the protecgulum in the protective hood fastening device provided by the invention;

Fig. 7 A is the fixedly sketch map of protective hood fastening device provided by the invention;

Fig. 7 B is the vertical view of Fig. 7 A provided by the invention;

Fig. 7 C is the adjusting protective cover operating angle sketch map of protective hood fastening device provided by the invention;

Fig. 7 D is the vertical view of Fig. 7 C provided by the invention;

Fig. 8 is the dismounting sketch map of protective hood fastening device provided by the invention.

The specific embodiment

For making the present invention more obviously understandable, now with preferred embodiment, and conjunction with figs. elaborates as follows.

Shown in Figure 1A and Figure 1B, a kind of electronic angle grinding machine with the unlatching lock function provided by the invention comprises housing 6, on the operation end of housing 6, is provided with the operation part 7 that is used for workpiece is carried out grinding or grinding.In the drawing that present embodiment provided, operation part 7 is positioned at the left side.Operation part 7 is by the drive motor work of being located at housing 6.In the holding end of housing 6, be provided with switch block 5.In the drawing that present embodiment provided, holding end is positioned at the right side.By switch block 5 CD-ROM drive motor is switched to "on" position or off-position.When CD-ROM drive motor was in "on" position, operation part 7 began to carry out grinding or grinding, and when CD-ROM drive motor was in off-position, operation part 7 stopped grinding or grinding.Below switch block 5, be provided with action bars 4, action bars 4 is a bar part, and its two ends connect housing 6 respectively.The operating personnel makes switch block 5 that CD-ROM drive motor is switched to "on" position through push bar 4, and after decontroling action bars 4, switch block 5 switches to off-position with CD-ROM drive motor.On action bars 4, be formed with the gap that is used to install dial 1, dial 1 is positioned at this gap.Penetrate a rotating dog 3 at the middle part of dial 1, the two ends of rotating dog 3 penetrate respectively and make knob 1 to rotate around rotating dog 3 in the action bars 4.Outside rotating dog 3, be with torsion spring 2.Dial 1 part is exposed to outside the action bars 4, and remainder is positioned at housing 6.The part that dial 1 is positioned at housing 6 links to each other with extension rod 1a.In the present embodiment; On the right side of extension rod 1a, stretching out is formed with projection 1b, on the end in its left side, forms a holding section 1c, in the present embodiment; This holding section 1c such as hook-shaped; On the end on its right side, form a guide part 1d, in the present embodiment, this guide part 1d is L shaped gathering sill.Extend upward the back-up block 4a that formation matches with projection 1b in the inboard of action bars 4.Be provided with extending column 6a in the left side of dial 1, extending column 6a links to each other with housing 6, the depressed part 6a-1 of the end of this extending column 6a for matching with holding section 1c.Be provided with lead 6b on the right side of dial 1.

Shown in Fig. 5 A and Fig. 5 B, protective hood fastening device 13 comprises that covering on emery wheel 14 outer cover body 13-1 reaches the protecgulum 13-6 that links to each other with housing 10.Stretch out on the end face of emery wheel 14 1 sides dorsad at cover body 13-1 and to form anchor ear 2; Be provided with boss e1, boss e2, boss e3, boss e4 and boss e5 in the inboard of anchor ear 13-2; Have draw-in groove g1, draw-in groove g2, draw-in groove g3, draw-in groove g4, draw-in groove g5 at the top of protecgulum 6, draw-in groove matches with boss.On the outer circumference surface of anchor ear 13-2, have annular groove 13-f, annular groove 13-f also matches with boss, and the tongue of pulling of spanner 13-5 is located at the outside, and remainder is located between anchor ear 13-2 and the protecgulum 13-6 through upper mounted plate 13-3 and screw 13-4.On anchor ear 13-2, have shift slot 13-b, gear tooth 13-a is located on the spanner 13-5, and gear tooth 13-a is stuck in the shift slot 13-b, between the outer circumference surface of spanner 13-5 and protecgulum 13-6, is provided with spring 7.Cover body 13-1 and the anchor ear 13-2 13-8 that is welded into a whole.

Shown in Fig. 6 A to Fig. 6 C; When protective cover is installed: press lower ejector lever 13-5; Boss e1 on the anchor ear 13-2, boss e2, boss e3, boss e4, boss e5 are aimed at protecgulum 13-6 respectively go up corresponding draw-in groove g1, draw-in groove g2, draw-in groove g3, draw-in groove g4, draw-in groove g5, be inserted in protective cover among the protecgulum 13-6.The rotation protective cover; Boss on the anchor ear 13-2 is embedded in the annular groove 13-f of protecgulum 13-6; Rotate to the user desired position, unclamp spanner 13-5 simultaneously, and make the gear tooth 13-a on the spanner 13-5 block the shift slot 13-b on the anchor ear 2; Play spline, realize the installation of protective hood of grinding wheel.

Shown in Fig. 7 A to Fig. 7 D; During fixing and adjustment protective cover operating angle: push spanner 13-5, slide in its chute that constitutes along deep gouge 13-c among the protecgulum 13-6 and upper mounted plate 13-3 (annotate: upper mounted plate 13-3 is fixed on the protecgulum 13-6 through screw 13-4), after the shift slot 13-b disengagement of the gear tooth 13-a of spanner 13-5 and anchor ear 13-2 (seeing t1); It is rotatable protective cover; According to the angle that protective cover is regulated in job requirement, unclamp spanner 13-5 after putting in place, under the elastic force effect of spring 13-7; Gear tooth 13-a snaps among the shift slot 13-b and (sees t2), plays the location and prevents the effect that protective cover rotates.

As shown in Figure 8, dismounting is during protective cover: as long as spanner 13-5 is pressed, and protective cover 13-1 is rotated to the corresponding position with protecgulum 13-6, just desirablely go out protective hood of grinding wheel 13-1, decontrol spanner 13-5 simultaneously.

As shown in Figure 1, when dial 1 is in when cutting out lockup state, projection 1b is being pressed under the effect of torsion spring 2 on the back-up block 4a, and guide part 1d then rests on the end of lead 6b, and at this moment, the operating personnel can't press action bars 4.

As shown in Figure 2, when the operation personnel need start electronic angle grinding machine, the operating personnel stirred dial 1 counterclockwise by the direction of arrow shown in Figure 2, and at this moment, projection 1b leaves back-up block 4a, and guide part 1d leaves the end of lead 6b.Then, as shown in Figure 3, after the direction of arrow shown in Figure 3 was pressed, dial 1 moved on whole under the drive of action bars 4 operating personnel with action bars 4.As shown in Figure 4; Be positioned at the top of depressed part 6a-1 as guide part 1d after; After the operating personnel stirs dial 1 by counter clockwise direction as shown in Figure 4 again, and after the hand that will pin action bars 4 moved away, guide part 1d had been stuck under the effect of torsion spring 2 on the depressed part 6a-1 securely; At this moment, knob 1 is in the unlatching lock-out state.

Claims

1. the electronic angle grinding machine with the unlatching lock function comprises housing (6), on the operation end of housing (6), is provided with the operation part (7) that is used for workpiece is carried out grinding or grinding; Operation part (7) is provided with switch block (5) by the drive motor work of being located at housing (6) in the holding end of housing (6), by switch block (5) CD-ROM drive motor is switched to "on" position or off-position; Be provided with action bars (4) in the below of switch block (5), the two ends of action bars (4) connect housing (6) respectively, it is characterized in that: on action bars (4), be formed with the gap that is used to install dial (1); Dial (1) is positioned at this gap, on dial (1), is equipped with rotating dog (3), and the two ends of rotating dog (3) are attended operation bar (4) respectively; Outside rotating dog (3), be with torsion spring (2); Dial (1) part is exposed to outside the action bars (4), and the remainder of dial (1) is positioned at housing (6), and this part of dial (1) connects extension rod (1a); On a side of extension rod (1a), be provided with projection (1b); On the end of its opposite side, be provided with holding section (1c), be provided with the back-up block (4a) that cooperates with this projection (1b) in the inboard of action bars (4), the side that is provided with holding section (1c) side at dial (1) is provided with extending column (6a); Extending column (6a) links to each other with housing (6); Be provided with the depressed part (6a-1) that matches with holding section (1c) in the end of extending column (6a), when dial (1) is in when cutting out lockup state, projection (1b) is being pressed under the effect of torsion spring (2) on the back-up block (4a); When dial (1) was in the unlatching lock-out state, holding section (1c) was fastened on the depressed part (6a-1).

2. as claimed in claim 1 a kind of with the electronic angle grinding machine of opening lock function; It is characterized in that: be provided with at said extension rod (1a) on the end of the opposite side of said projection (1b) and be provided with guide part (1d); The side that is provided with guide part (1d) side at said extension rod (1a) is provided with lead (6b); When said dial (1) is in when cutting out lockup state, guide part (1d) rests on the end of lead (6b).

3. as claimed in claim 1 a kind of with the electronic angle grinding machine of opening lock function; It is characterized in that: said operation part (11) comprises emery wheel (14); Outside emery wheel (14), be provided with protective hood fastening device (13), said CD-ROM drive motor is through drive motor emery wheel (14) rotation, wherein:

Protective hood fastening device (13) comprises and covers on the outer cover body (13-1) of emery wheel (14) and be connected the protecgulum (13-6) on the said housing (10); Stretch out on the side end face of emery wheel (14) dorsad at cover body (13-1) and to form anchor ear (13-2); Inboard at anchor ear (13-2) is provided with at least one boss; Top at protecgulum (13-6) is provided with at least one draw-in groove; The quantity of draw-in groove is suitable with the quantity of boss, on the outer circumference surface of protecgulum (13-6), has annular groove (13-f), and the boss of anchor ear (13-2) embeds in the annular groove (13-f) through draw-in groove; The tongue of pulling of spanner (13-5) is positioned at outside remainder and is located between anchor ear (13-2) and the protecgulum (13-6); On anchor ear (13-2), have shift slot (13-b), be positioned on the part between anchor ear (13-2) and the protecgulum (13-6) at spanner (13-5) and be provided with gear tooth (13-a), gear tooth (13-a) is stuck in the shift slot (13-b).