CN100386183C - Scissors - Google Patents

Abstract

The present invention relates to a pair of scissors. The scissors have two shearing elements and a pivoting device, wherein the two shearing elements are respectively provided with a countersunk hole to penetrate through the shearing elements. The pivoting device is provided with a screw bolt and a screw cap, the screw bolt has a screw rod and a head; the screw cap has a rod part, an expanded stop block and a screw hole which is extended to pass through the rod part and the stop block. When the stop block of the screw cap is contained in the stop part of the countersunk hole of one of the shearing element, the rod part of the screw cap enters the countersunk hole of another shearing element; the screw rod of the screw bolt is in screw connection with the screw hole of the screw cap. Because the stop block and the stop part are in non-circular coincidence connection of the outer margin surface, the screw bolt can not get loose with the screw cap.

Description

Scissors

Technical field

The present invention is relevant for a kind of axle armature assembly of scissors.

Background technology

Fig. 1, Fig. 2 show that scissors A commonly used has one first scissors element 100 and one second scissors element 200.The axle armature assembly that this first scissors element 100 and this second scissors element 200 utilize bolt 300 and nut 400 to constitute is articulated.As shown in Figure 2, this first scissors element 100 has a through hole 101, runs through this first scissors element 100.Moreover this second scissors element 200 has a countersunk 201, runs through this second scissors element 200.This countersunk 201 has a relative smaller part 202 and aims at the through hole 101 of these first scissors elements 100 and one relatively large 203.

This bolt 300 has a screw rod 301 and passes the relative smaller part 202 of this countersunk 201 and the through hole 101 of this first scissors element 100, then be screwed with this nut 400, and the head 302 of this bolt 300 is contained in relatively large 203 of this countersunk 201.

But, this armature assembly can unclamp, when using scissors A, this first scissors element 100 and this second scissors element 200 pivot relative to one another, drive this bolt 300 and rotate, and this nut 400 is by fastening, the two gets loose even separates to make this bolt 300 and this nut 400.

On the other hand, this nut 400 is posted by the outside wall surface of this first scissors element 100 and forms interference, the shear action that can hinder this scissors A first scissors element 100, the second scissors element 200 to hold and close.

Again on the one hand, this bolt 300 screws togather with this nut 400, must earlier pin this nut 400 with finger it is fixed, this bolt 300 is engaged with this nut 400, the pivot joint operation of this first scissors element 100 and this second scissors element 200 very requires great effort, time-consuming.

Summary of the invention

According to embodiments of the invention, scissors provided by the present invention has one first scissors element, one second scissors element and an axle armature assembly in order to this first scissors element of axle pivot and this second scissors element.This first scissors element has a countersunk, runs through this first scissors element.The countersunk of this first scissors element has a relatively large retainer away from this second scissors element, and a relative smaller part faces this second scissors element, and this retainer outer edge surface is non-circular shape.

This second scissors element has a countersunk, runs through this second scissors element.The countersunk of this second scissors element has a relatively large portion away from this first scissors element, reaches a relative smaller part in the face of this first scissors element, and aims at the relative smaller part of this first scissors element countersunk.

This armature assembly has a bolt and a nut.This bolt has a screw rod and a head.This nut has a bar portion and a scotch that enlarges, and has a screw to extend through bar portion and this scotch of this nut, and this scotch outer edge surface is identical with the non-circular shape of this retainer outer edge surface, and is connected with this retainer outer edge surface is identical.

This nut is contained in the countersunk of this first scissors element, the scotch of this nut is contained in the pairing retainer of this first scissors element countersunk, and the relative smaller part of this first scissors element countersunk and the relative smaller part of this second scissors element countersunk pass in bar portion.

The screw rod of this bolt and the screw of this nut are screwed, and the head of this bolt is contained among relatively large of this second scissors element countersunk.

Utilize this scotch outer edge surface to engage with the non-circular shape of this retainer outer edge surface, make this nut in the countersunk of this first scissors element and rotatable by fastening, when this first scissors element, when this second scissors element is done the pivot relative motion of shearing, this bolt and this nut will not the moving displacements of pivot.Prevent that effectively this bolt and/or this nut from getting loose.In view of the above, provide a kind of reliable axle armature assembly.

Because this nut holds in the countersunk that is placed in this first scissors element, the shear action that can not interfere this first scissors element, this second scissors element to hold and close fully, manipulating of scissors is smooth and easy more flexibly.

This fixed by nut does not need the other application of force to fix this nut in the countersunk of this first scissors element, promptly can this nut of this screw threaded, and impel the pivot joint action of this first scissors element and this second scissors element more laborsaving, quick.

Description of drawings

Fig. 1: the stereogram of scissors commonly used.

Fig. 2: the sectional schematic diagram of scissors shaft armature assembly commonly used.

Fig. 3: the three-dimensional exploded view of scissors of the present invention.

Fig. 4: the stereogram of scissors of the present invention.

Fig. 5: the amplification three-dimensional exploded view of scissors shaft armature assembly of the present invention.

Fig. 6: the sectional schematic diagram of scissors shaft armature assembly of the present invention.

Fig. 7: part combination view of the present invention.

Fig. 8: the scissors three-dimensional exploded view of another embodiment of the present invention.

Fig. 9: the scissors shaft armature assembly of another embodiment of the present invention amplifies three-dimensional exploded view.

The specific embodiment

See also Fig. 3 to Fig. 7, have one first scissors element 10, one second scissors element 20 and in order to engage the axle armature assembly of this first scissors element 10 and this second scissors element 20 according to the scissors B that preferred embodiment of the present invention provided.

As shown in Figure 3, this first scissors element 10 has a countersunk 11, runs through this first scissors element 10.The countersunk 11 of this first scissors element 10 has a relatively large retainer 12, is then in the face of this second scissors element 20 away from these second scissors element, 20, one relative smaller parts 13.These retainer 12 outer edge surfaces are shaped as non-circular, and for example: polygon such as triangle, quadrangle or oval or other non-circular shapes, Fig. 7 shows that retainer 12 outer edge surface shapes roughly are oval non-circular, then is an example wherein.

In the same manner, this second scissors element 20 has a countersunk 21, runs through this second scissors element 20.The countersunk 21 of this second scissors element 20 has one relatively large 22, is then face this first scissors element 10 away from these first scissors element, 10, one relative smaller parts 23, and aims at the relative smaller part 13 of these first scissors element, 10 countersunks 11.

This armature assembly has a bolt 30 and a nut 40.This bolt 30 has a screw rod 31 and a head 32.This nut 40 has a bar portion 41 and a scotch 42 that enlarges, and there is a screw 43 to extend through this bar portion 41 and this scotch 42, similarly, these scotch 42 outer edge surface shapes are identical with these retainer 12 outer edge surface shapes, also be non-circular, this scotch 42 can correspondingly coincide and be installed on this retainer 12, as shown in Figure 7.

During combination, as shown in Figure 6, embed the countersunk 11 of this nut 40 in this first scissors element 10, this scotch 42 can be installed and be contained in these countersunk 11 pairing retainers 12, and this bar portion 41 promptly can be by the relative smaller part 13 of these first scissors element, 10 countersunks 11 and the relative smaller part 23 of these second scissors element, 20 countersunks 21.Secondly, the screw rod 31 of this bolt 30 can be screwed with the screw 43 of this nut 40, makes the head 32 of this bolt 30 install relatively large 22 that is contained in these second scissors element, 20 countersunks 21.These bolt 30 heads 32 have a line of rabbet joint 33, allow that the user removes to drive this bolt 30 with a screwdriver or analog.

Can see from Fig. 6, Fig. 7, this scotch 42 and this retainer 12 engage the non-circular fit mode of outer edge surface shape that adopts so that this nut 40 is ended and hides in the countersunk 11 that is contained in this first scissors element 10 and do not rotate by fixed.Therefore, this first scissors element 10, this second scissors element 20 are when doing the pivot relative motion of shearing, and this bolt 30 and this nut 40 can displacements, guarantee that this bolt 30 and/or this nut 40 do not get loose.

Moreover, because this nut 40 is concealed in the countersunk 11 of this first scissors element 10 by fastening, this nut 40 can not interfered this first scissors element 10, promotes this first scissors element 10, and the shear action that this second scissors element 20 is opened and closed is smooth and easy more flexibly.

And owing to this nut 40 is fixed in the countersunk 11 of this first scissors element 10, needn't pin with finger and fix this nut 40, promptly can screw togather this nut 40 by this bolt 30, make the pivot joint operation of this first scissors element 10 and this second scissors element 20 more laborsaving, save time.

Continue to see also Fig. 8, Fig. 9, it is another embodiment of the present invention, much the same with the structure of previous described Fig. 3 to Fig. 7, different persons, be that outer edge surface is shaped as non-circular connected mode, the bar portion 41 that changes into this nut 40 combines with these first scissors element, 10 countersunks, 11 pairing smaller parts 13, can it not rotated this nut 40 of fastening equally.

Though aforesaid narration and graphicly disclosed preferred embodiment of the present invention, but must clear and definite this only be feasible enforcement example of the present invention, therefore, this paper be in all viewpoints of embodiment that this disclosed, should be regarded as in order to explanation the present invention, but not in order to restriction the present invention.Protection scope of the present invention, and comprise its legal equivalents, be not limited to previous narration.

Claims (4)

1. a scissors is characterized in that, it is made of one first scissors element, one second scissors element, a nut and a bolt;

The described first scissors element has a countersunk, and this countersunk also comprises a retainer;

Described nut comprises a scotch, is contained in the retainer of this first scissors element countersunk in order to installation, and this scotch engages with this retainer, is the non-circular identical connection of outer edge surface shape;

Described bolt passes the countersunk of this second scissors element, this first scissors element, screws togather with this nut, and this first scissors element and this second scissors element are articulated.

2. scissors according to claim 1 is characterized in that: the described second scissors element has a countersunk, uses the head that passes and install this bolt for a described bolt.

3. a scissors is characterized in that, it is made of one first scissors element, one second scissors element, a nut and a bolt;

The described first scissors element has a countersunk, and this countersunk more comprises a smaller part;

Described nut comprises a bar portion, is contained in the smaller part of this first scissors element countersunk in order to installation, and this bar portion engages with this smaller part, is the non-circular identical connection of outer edge surface shape;

Described bolt passes the countersunk of this second scissors element, this first scissors element, screws togather with this nut, and this first scissors element and this second scissors element are articulated.

4. scissors according to claim 3 is characterized in that: the described second scissors element has a countersunk, uses the head that passes and install this bolt for this bolt.

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