CN208391851U - A kind of labor-saving plier - Google Patents

Abstract

The utility model relates to a kind of labor-saving pliers, it solves existing pliers shearing labor-saving effect to be restricted, the poor defect in labor-saving effect, including binding clip and grip part, binding clip is divided into the first binding clip and the second binding clip, first binding clip and the second binding clip are hinged to form binding clip function part and shank, and grip part and shank are hinged to form primary lever structure, and shank and binding clip function part form second lever structure.Grip part and shank hingedly form primary lever structure, and binding clip itself forms second lever, and laborsaving twice is all the laborsaving principle using lever, to promote the labor-saving effect of pliers shearing.

Description

A kind of labor-saving plier

Technical field

The utility model relates to a kind of cutting implement, especially a kind of labor-saving plier.

Background technique

Existing hand-operated tools, such as pliers generally include left caliper and right caliper body, pass through between left caliper and right caliper body Pivot is hinged, and right binding clip and left binding clip are respectively arranged on left caliper and right caliper body, by controlling left clamp handle and right clamp handle Folding is met clamping to realize left binding clip and right binding clip, completes workpiece shearing.

Laborsaving pliers is more intuitively experienced operator, and usual consumer does not simultaneously have biggish grip or even one A little practical pliers of Ms are relatively difficult when shearing.

Existing pliers, the articulated position between left caliper and right caliper body immobilize, and according to lever principle, to cut Cut laborsaving, the length of lever will increase, and the entire length of pliers is unable to indefinite extension, therefore the labor-saving effect of pliers is poor.

In order to laborsaving, the grip part that existing pliers uses is mostly sheet metal component, and the integral strength of the bending of sheet metal component cannot It is effectively ensured.

Summary of the invention

The utility model solves existing pliers shearing labor-saving effect and is restricted, and the poor defect in labor-saving effect mentions For a kind of labor-saving plier, curable grip is amplified by second lever structure, to promote the labor-saving effect of pliers shearing.

The utility model the specific technical proposal is: a kind of labor-saving plier, labor-saving plier include binding clip and grip part, binding clip is divided into First binding clip and the second binding clip, the first binding clip and the second binding clip are hinged to form binding clip function part and shank, grip part and handle Portion is hinged to form primary lever structure, and shank and binding clip function part form second lever structure.Binding clip function part refers to clamping The functional part of son, such as clamping, shearing；Binding clip has binding clip function part and shank, when closing up shank in this way, binding clip function The just once effect of power amplification when energy portion realizes function, that is to say, that once laborsaving；Shank and hinged grip part, hold It holds portion and shank also forms lever construction, the once effect of power amplification again when closing up grip part in this way, tool whole in this way There is power amplification twice, that is to say, that have laborsaving twice；Laborsaving twice is all the laborsaving principle using lever, grip part with Shank hingedly forms primary lever structure, and binding clip itself forms second lever, to promote the labor-saving effect of pliers shearing.

Preferably, the first binding clip and the second binding clip are in X-shaped cross-articulation, grip part includes that the first handle and second is held , the end of two handles is hinged, two handles by close end position again respectively with the shank of the first binding clip and the second binding clip Shank be hinged.Two handle ends are hinged, and hinged position changes again close to the end itself being hinged with shank The ratio of force enlarging example of handle i.e. changeable primary lever at a distance from opposite handle end with the hinge point of shank, according to what is dehisced Size designs the adjustable structure of handle and shank hinge point, to realize different primary lever magnification ratios.

Preferably, the binding clip function part and shank of the first binding clip are respectively the first binding clip function part and the first shank, One binding clip function part and the first shank are structure as a whole, and the binding clip function part and shank of the second binding clip are divided into the second binding clip function part With the second shank, the second binding clip function part and the second shank are structure as a whole.Binding clip function part and shank are structure as a whole, pincers Head function part is that main function implements position, therefore binding clip is mostly using forge piece, intensity with higher again, and shank also has There is higher intensity.

The slot structure preferably, shank is in U-shape, grip part pass through U-lag and are hinged with shank.Shank is U-shaped groove structure, Also allowing for handle is entity structure, and such handle can have higher intensity.

In view of handle end can move in the U-lag of shank, preferably, the bottom of shank U-lag is bevelled junction Structure, when two binding clips are hinged, the tilting bottom of the U-lag of two shanks is just symmetrical with respect to the middle line of labor-saving plier, and two shanks U-lag relative position depth be maximum.It can reduce the size of shank weak part in this way.

Preferably, the minimum 3mm of thickness of shank U-lag two sidewalls, the minimum 6mm of the width of U-lag.Shank side wall Thickness if it is less than 3mm, then the intensity of side wall can be weakened, but the thickness of side wall cannot be too big, otherwise can make binding clip Thickness increase, overall weight also increases.

Preferably, the end of grip part is articulated section portion, articulated section is integrally in biasing shape with respect to grip part, articulated section Thickness is less than the thickness of grip part.

Preferably, the minimum thickness of articulated section is 3mm.

In order to guarantee that the intensity of grip part is guaranteed, preferably, grip part is forging body.

The beneficial effects of the utility model are: grip part and shank hingedly form primary lever structure, binding clip itself formation Second lever, laborsaving twice is all the laborsaving principle using lever, to promote the labor-saving effect of pliers shearing.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of the utility model；

Fig. 2 is a kind of decomposition diagram of the utility model；

Fig. 3 is the A-A schematic diagram of the utility model Fig. 1；

Fig. 4 is the B-B schematic diagram of the utility model Fig. 1；

Fig. 5 is the structural schematic diagram of the second binding clip of the utility model；

Fig. 6 is the structural schematic diagram of the second handle of the utility model；

Fig. 7 is that a kind of power of the utility model calculates schematic diagram；

Fig. 8 is that the power of the prior art calculates schematic diagram；

In figure: 1, binding clip function part, 2, shank, 3, grip part, the 4, first handle, the 5, second handle, the 6, first pivot, 7, Second pivot, the 8, second shank, 9, third pivot, the 10, first shank, the 11, the 4th pivot, the 12, first binding clip function part, 13, Second binding clip function part, 14, articulated section, 15, U-lag, 16, bottom.

Specific embodiment

Below by specific embodiment, and in conjunction with attached drawing, the utility model will be further described.

Embodiment: a kind of labor-saving plier, as shown in Fig. 1 Fig. 2, labor-saving plier includes binding clip and grip part 3, and binding clip includes the first pincers Head and the second binding clip, the first binding clip and the second binding clip are in X-shaped by 11 cross-articulation of the 4th pivot, and the 4th pivot front forms pincers Head function part 1, the 4th pivot rear portion form shank 2, and the binding clip function part and shank of the first binding clip are respectively the first binding clip function Portion 12 and the first shank 10, the first binding clip function part and the first shank are structure as a whole, the binding clip function part and handle of the second binding clip Part is the second binding clip function part 13 and the second shank 8, and the second binding clip function part and the second shank are structure as a whole, the first binding clip It is forge piece with the second binding clip.Binding clip in the present embodiment uses nipper plier head, and front end is clamping part, and rear end is cut part.

Shank is in U-shape slot structure, and grip part passes through U-lag 15(Fig. 5 referring to fig. 2) it is hinged with shank.Shank U-lag two The minimum 3mm of the thickness of side wall, in the present embodiment side wall with a thickness of 4mm, the width of U-lag is 6mm.In shank U-lag Bottom 16 is incline structure, and when two binding clips are hinged, the tilting bottom of the U-lag of two shanks is just with respect to the middle line of labor-saving plier Symmetrically, and the depth of the U-lag relative position of two shanks is maximum.

Grip part includes the first handle 4 and the second handle 5, the ends of two handles be hinged by third pivot 9 (referring to Fig. 4), the arc-shaped shape of two handles, after two handles are hinged, arc evagination is outwardly.Position and first handle of first handle by close end Portion is hinged by the first pivot 6, and the second handle is hinged (referring to figure by the second pivot 7 by the position of close end and the second shank 3), the distance between the first pivot and the 4th pivot are greater than binding clip and shear the maximum arm of force of opposite 4th pivot in position.Grip part End be articulated section 14(Fig. 6 referring to fig. 2), articulated section is integrally in biasing shape with respect to grip part, and the thickness of articulated section is less than holding Hold the thickness in portion, in the present embodiment articulated section with a thickness of 3mm, grip part is forging body.Two handles use identical shape, In after a handle another handle relatively overturns 180 °, two articulated sections can be just overlapped up and down.Handle corresponds to the position of articulated section It is provided with bevel edge, the bevel edge of a handle corresponds to the side of another handle articulated section, and bevel edge can play the role of limit, avoid two Handle, which closes up, to jam a finger.

Grip part and shank hingedly form primary lever structure, and two binding clips are hinged to form second lever structure.

It is that primary lever inputs arm of force 74.1mm referring to Fig. 7, L3, L2 is that primary lever exports arm of force 18.6mm, L4 bis- Grade lever inputs arm of force 44.45mm, and L1 second lever exports arm of force 10.82mm.Below by the comparatively bright labour-saving of power Effect applies identical power F=1N away from the 4th hinged pivot same distance L=100mm of binding clip, and the shearing force at the position cutting edge C is F1, F1=(L3/L2) * (L4/L1) * F=16.366N, the shearing force at the existing position pliers (referring to Fig. 8) cutting edge C are F2, F2= (L/L1) * F=9.242N.F1 > F2, in addition loss factor 0.8, F1, which appoints, is so greater than F2.

The above is only the preferred embodiment of the utility model, not imposes any restrictions to the utility model, all According to the utility model technical spirit any simple modification, change and equivalent transformation to the above embodiments, still fall within The protection scope of technical solutions of the utility model.

Claims (9)

1. a kind of labor-saving plier, it is characterised in that labor-saving plier includes binding clip and grip part, and binding clip is divided into the first binding clip and the second binding clip, First binding clip and the second binding clip are hinged to form binding clip function part and shank, and grip part and shank are hinged to form primary lever Structure, shank and binding clip function part form second lever structure.

2. a kind of labor-saving plier according to claim 1, it is characterised in that the first binding clip and the second binding clip are in X-shaped intersection hinge It connects, grip part includes the first handle and the second handle, and the end of two handles is hinged, and two handles divide again by the position of close end Shank not with the shank of the first binding clip and the second binding clip is hinged.

3. a kind of labor-saving plier according to claim 1 or 2, it is characterised in that the binding clip function part and handle portion of the first binding clip Not Wei the first binding clip function part and the first shank, the first binding clip function part and the first shank be structure as a whole, the pincers of the second binding clip Head function part and shank are divided into the second binding clip function part and the second shank, and the second binding clip function part and the second shank are integrated knot Structure.

4. a kind of labor-saving plier according to claim 3, it is characterised in that shank is in U-shape slot structure, and grip part passes through U-lag It is hinged with shank.

5. a kind of labor-saving plier according to claim 4, it is characterised in that the bottom of shank U-lag is incline structure, two pincers When head is hinged, the tilting bottom of the U-lag of two shanks is just symmetrical with respect to the middle line of labor-saving plier, and the U-lag of two shanks The depth of relative position is maximum.

6. a kind of labor-saving plier according to claim 4, it is characterised in that the minimum 3mm of thickness of shank U-lag two sidewalls, The minimum 6mm of the width of U-lag.

7. a kind of labor-saving plier according to claim 1 or 2, it is characterised in that the end of grip part is articulated section, articulated section Opposite grip part is integrally in biasing shape, and the thickness of articulated section is less than the thickness of grip part.

8. a kind of labor-saving plier according to claim 7, it is characterised in that the minimum thickness of articulated section is 3mm.

9. a kind of labor-saving plier according to claim 1 or 2, it is characterised in that grip part is forging body.