CN112428170A

CN112428170A - Labor-saving pliers

Info

Publication number: CN112428170A
Application number: CN202011099528.0A
Authority: CN
Inventors: 张苗苗
Original assignee: Shanghai Zouxiang Creative Design Co ltd
Current assignee: Shanghai Zouxiang Creative Design Co ltd
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-03-02

Abstract

The invention discloses labor-saving pliers, which comprise fixed pliers and movable pliers, wherein the fixed pliers comprise a first handle, the movable pliers comprise a second handle, the first handle is provided with a sliding groove, the labor-saving pliers also comprise a lock head and an elastic structure, the lock head is fixed on the movable pliers and positioned in the sliding groove of the fixed pliers, the elastic structure is connected with the first handle and the second handle, the elastic structure provides elastic force for the first handle and the second handle to open the first handle and the second handle, the fixed pliers move when the first handle and the second handle are closed, the lock head moves in the sliding groove until the lock head is locked with the fixed pliers to enable a fulcrum of the labor-saving pliers to be transferred from the elastic structure to the lock head, the arm of force is increased; on the basis of increasing the clamping force, the angles of the two handles are unchanged, the hand strength is unchanged, and the one-hand operation can be realized; the switch rotates relative to the second handle and is buckled with the stop position to lock the first handle and the second handle, so that the portable storage device is convenient to carry.

Description

Labor-saving pliers

Technical Field

The invention relates to pliers, in particular to labor-saving pliers.

Background

The existing pliers comprise movable pliers and fixed pliers, movable pliers heads and fixed pliers heads are arranged at the upper ends of the movable pliers and the fixed pliers respectively, left mounting holes and right mounting holes are formed in the movable pliers heads and the fixed pliers heads respectively, and pin shafts penetrate through the left mounting holes and the right mounting holes to movably connect the movable pliers heads and the fixed pliers heads. When the cutting pliers are used, acting force is applied to the movable handle and the fixed handle, so that the movable pliers head and the fixed pliers head are clamped mutually, and the purpose of cutting is achieved. The pliers of this structure are relatively laborious to use, sometimes requiring two-handed operation.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide the labor-saving pliers which have the advantages of capability of increasing the moment arm, large clamping force and capability of being operated by one hand in the using process.

One of the purposes of the invention is realized by adopting the following technical scheme:

a pair of labor-saving pliers comprises fixed pliers and movable pliers, wherein the fixed pliers comprise a first handle, the movable pliers comprise a second handle, the first handle is provided with a sliding groove, the labor-saving pliers further comprise a lock head and an elastic structure, the lock head is fixed to the movable pliers and located in the sliding groove of the fixed pliers, the elastic structure is connected with the first handle and the second handle, the elastic structure provides elastic force for the first handle and the second handle to enable the first handle and the second handle to be opened, the fixed pliers move when the first handle and the second handle are closed, and the lock head moves in the sliding groove until being locked with the fixed pliers to enable a fulcrum of the labor-saving pliers to be transferred from the elastic structure to the lock head.

Furthermore, the lock head is provided with a locking part, the sliding groove is provided with a sawtooth edge, and the locking part is locked with the sawtooth edge in a buckling mode.

Further, the tapered end still is equipped with laminating portion, laminating portion is the plane, the spout still is equipped with sharp limit, the tapered end is in when moving in the spout, laminating portion with the laminating of sharp limit, when laborsaving forceps holder got article, the tapered end rotates and makes laminating portion with sharp limit separation, the sticking department with sawtooth limit buckle.

Further, the elastic structure comprises a supporting cover, a rotating shaft, a first elastic member, a second elastic member and a third elastic member, the supporting cover is rotatably connected with the second handle, the rotating shaft is rotatably connected with the first handle, the supporting cover is rotatably connected with the rotating shaft, the first elastic member is fixed on the supporting cover and applies elasticity to the first handle, the second elastic member is fixed on the supporting cover and applies elasticity to the rotating shaft, and the third elastic member is fixed on the second handle and applies elasticity to the rotating shaft.

Further, the first elastic member, the second elastic member and the third elastic member are coil springs, respectively.

Further, elastic construction still includes the fixed axle, the fixed axle is fixed in the second handle, support the lid with the fixed axle rotates to be connected, first elastic component includes fixed point and swinging boom, and the fixed point is fixed in and supports the lid, and the swinging boom is contradicted with the fixed axle.

Furthermore, in the process of closing the labor-saving pliers, the included angle between the support cover and the fixed shaft is increased.

Further, the elastic structure further comprises a fixed block, the fixed block is fixed on the first handle, the fixed block is rotatably connected with the rotating shaft, the fixed point of the third elastic piece is fixed on the fixed block, the fixed point of the third elastic piece is fixed on the rotating arm, and the rotating arm is abutted against the rotating shaft.

Furthermore, in the process of closing the labor-saving pliers, an included angle between the support cover and the rotating shaft is reduced.

Furthermore, the elastic structure comprises a stop position, the labor-saving clamp comprises a switch, the switch is rotatably mounted on the second handle, the switch rotates relative to the second handle and is buckled with the stop position to lock the first handle and the second handle.

Compared with the prior art, the labor-saving pliers comprise a first handle, a lock head and an elastic structure, wherein the lock head is fixed on the movable pliers and is positioned in the sliding groove of the fixed pliers; on the basis of increasing the clamping force, the angles of the two handles are unchanged, the hand strength is unchanged, and the one-hand operation can be realized; the switch rotates relative to the second handle and is buckled with the stop position to lock the first handle and the second handle, so that the portable storage device is convenient to carry.

Drawings

Fig. 1 is a perspective view of the labor-saving pliers of the invention.

Fig. 2 is a partial structural view of the labor-saving clamp of fig. 1.

Fig. 3 is another partial structure schematic diagram of the labor-saving clamp of fig. 1.

Fig. 4 is a cross-sectional view of the locking state of the power saving pliers of fig. 1.

Fig. 5 is a cross-sectional view of the open state of the labor saving clamp of fig. 1.

In the figure: 10. fixing the pliers; 11. a first binding clip; 12. a first handle; 120. a chute; 121. a straight line edge; 122. a sawtooth edge; 20. movable pliers; 21. a second binding clip; 22. a second handle; 30. a lock head; 31. a bonding section; 32. a locking portion; 40. an elastic structure; 41. a fixed shaft; 42. a support cover; 43. a rotating shaft; 44. a fixed block; 45. a first elastic member; 46. a second elastic member; 47. a third elastic member; 48. stopping; 50. a switch; 51. and (7) clamping hooks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, secured by intervening elements. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly disposed on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 5, the power saving pliers of the present invention include a fixed pliers 10, a movable pliers 20, a lock head 30, an elastic structure 40 and a switch 50.

The fixed clamp 10 includes a first jaw 11 and a first handle 12. The first jaw 11 and the first handle 12 are integrally formed. The first handle 12 is provided with a chute 120. The slide groove 120 is a linear groove. One edge of the sliding slot 120 is a straight edge 121, and the other edge is a sawtooth edge 122.

The movable jaw 20 includes a second jaw 21 and a second handle 22, and the second jaw 21 and the second handle 22 are integrally formed.

The lock head 30 is provided with an attaching portion 31 and a locking portion 32. The attaching portion 31 and the locking portion 32 are located on the side of the lock head 30. The bonded portion 31 is a flat surface. The locking portion 32 is serrated.

The elastic structure 40 includes a fixed shaft 41, a support cover 42, a rotating shaft 43, a fixed block 44, a first elastic member 45, a second elastic member 46, a third elastic member 47, and a stopper 48. The fixed shaft 41 is rotatably connected to the support cover 42. The support cover 42 is rotatably connected to the rotation shaft 43. The rotary shaft 43 is rotatably connected to the fixed block 44.

The first elastic member 45, the second elastic member 46, and the third elastic member 47 are coil springs. The coil spring comprises a fixed point and a rotating arm. The first elastic element 45 is sleeved on one end of the supporting cover 42 close to the fixed shaft 41, a fixed point of the first elastic element 45 is fixed on one end of the supporting cover 42 close to the fixed shaft 41, a rotating arm of the first elastic element 45 is inserted into the fixed shaft 41, and the rotating arm of the first elastic element 45 extends towards the direction close to the second forceps head 21.

The second elastic element 46 is sleeved on one end of the supporting cover 42 close to the rotating shaft 43. The fixing point of the second elastic member 46 is fixed to one end of the support cover 42 near the rotation shaft 43. The rotating arm of the second elastic member 46 is inserted into the rotating shaft 43, and the rotating arm of the second elastic member 46 extends toward the first handle 12.

The third elastic element 47 is sleeved on one end of the rotating shaft 43 close to the fixing block 44. The fixing point of the third elastic element 47 is fixed to the fixing block 44, the rotating arm of the third elastic element 47 is inserted into the rotating shaft 43, and the rotating arm of the third elastic element 47 extends toward the direction close to the supporting cover 42. The stop 48 extends from the end of the support cover 42 adjacent the fixed shaft 41. The stop 48 is V-shaped.

The switch 50 includes a hook 51. The hook 51 has an umbrella-shaped cross section.

When the power saving pliers are assembled, the locking head 30 is fixed to the movable pliers 20 and located between the second pliers head 21 and the second handle 22. The stationary jaw 10 is mounted to the movable jaw 20, and the locking head 30 is located in the sliding groove 120. The fixed shaft 41 of the resilient structure 40 is fixed to the second handle 22. Fixed block 44 is secured to first handle 12. Switch 50 is pivotally mounted to second handle 22.

After assembly, the pliers are in an open position due to the spring force provided by the spring structure 40 to the first handle 12 and the second handle 22.

When using the labor-saving pliers, a user holds the first handle 12 and the second handle 22, applies an external force to the first handle 12 and the second handle 22, the first pliers head 11 and the second pliers head 21 are gradually closed, at this time, the joint part 31 of the lock head 30 is jointed with the linear edge 121, the linear edge 121 slides relative to the joint part 31 to enable the fixing pliers 10 to move towards the direction close to the hands of the operator, and at this time, the fulcrum of the labor-saving pliers is at the elastic structure 40. When the first binding clip 11 and the second binding clip 21 are folded to clamp the object, the locking head 30 rotates to separate the fitting part 31 from the straight line edge 121, the locking part 32 is buckled with the sawtooth edge 122 to lock the locking head 30 and the fixed clamp 10, the fulcrum of the labor-saving clamp is arranged at the locking head 30, which is equivalent to the force arm of the hand-held end is increased, and at the moment, the force for clamping the object is increased instantly, so that the object can be clamped more firmly. On the basis of increasing the clamping force, the angles of the two handles are unchanged, the hand strength is unchanged, and the one-hand operation is convenient. In the folding process of the labor-saving clamp, the included angle between the supporting cover 42 and the fixed shaft 41 is increased. The angle between the support cover 42 and the rotation shaft 43 becomes smaller.

When the labor-saving pliers do not work, the pliers are folded to the limit (the jaws are folded), the switch 50 is manually turned, the switch 50 rotates relative to the second handle 22, the hook 51 of the switch 50 is buckled with the stop position 48, and the pliers can be locked.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, variations and modifications can be made without departing from the spirit of the invention, and all equivalent modifications and changes can be made to the above embodiments according to the essential technology of the invention, which falls into the protection scope of the invention.

Claims

1. The utility model provides a laborsaving pincers, includes fixed pincers and activity pincers, fixed pincers include first handle, the activity pincers include second handle, its characterized in that: the first handle is provided with a sliding groove, the labor-saving clamp further comprises a lock head and an elastic structure, the lock head is fixed to the movable clamp and located in the sliding groove of the fixed clamp, the elastic structure is connected with the first handle and the second handle, the elastic structure provides elastic force for the first handle and the second handle to enable the first handle and the second handle to be opened, the fixed clamp moves when the first handle and the second handle are closed, and the lock head moves in the sliding groove until the lock head is locked with the fixed clamp to enable a supporting point of the labor-saving clamp to be transferred to the lock head from the elastic structure.

2. The power saving pliers as claimed in claim 1, wherein: the lock head is provided with a locking part, the sliding groove is provided with a sawtooth edge, and the locking part is locked with the sawtooth edge in a buckling mode.

3. The power saving pliers as claimed in claim 2, wherein: the tapered end still is equipped with laminating portion, laminating portion is the plane, the spout still is equipped with sharp limit, the tapered end is in when removing in the spout, laminating portion with the laminating of sharp limit, when article were got to laborsaving forceps holder, the tapered end rotates and makes laminating portion with sharp limit separation, the sticking department with sawtooth limit buckle.

4. The power saving pliers as claimed in claim 1, wherein: the elastic structure comprises a supporting cover, a rotating shaft, a first elastic piece, a second elastic piece and a third elastic piece, wherein the supporting cover is rotatably connected with the second handle, the rotating shaft is rotatably connected with the first handle, the supporting cover is rotatably connected with the rotating shaft, the first elastic piece is fixed on the supporting cover and applies elasticity to the first handle, the second elastic piece is fixed on the supporting cover and applies elasticity to the rotating shaft, and the third elastic piece is fixed on the second handle and applies elasticity to the rotating shaft.

5. The power saving pliers as claimed in claim 4, wherein: the first elastic member, the second elastic member and the third elastic member are coil springs, respectively.

6. The power saving pliers as claimed in claim 5, wherein: the elastic structure further comprises a fixed shaft, the fixed shaft is fixed on the second handle, the supporting cover is connected with the fixed shaft in a rotating mode, the first elastic piece comprises a fixed point and a rotating arm, the fixed point is fixed on the supporting cover, and the rotating arm is abutted against the fixed shaft.

7. The power saving pliers as claimed in claim 6, wherein: in the folding process of the labor-saving pliers, the included angle between the support cover and the fixed shaft is increased.

8. The power saving pliers as claimed in claim 4, wherein: the elastic structure further comprises a fixed block, the fixed block is fixed on the first handle, the fixed block is rotatably connected with the rotating shaft, the third elastic piece fixed point and the rotating arm are fixed on the fixed block, and the rotating arm is abutted against the rotating shaft.

9. The power saving pliers as claimed in claim 4, wherein: in the folding process of the labor-saving pliers, an included angle between the supporting cover and the rotating shaft is reduced.

10. The power saving pliers as claimed in claim 1, wherein: the elastic structure comprises a stop position, the labor-saving clamp comprises a switch, the switch is rotatably mounted on the second handle, the switch rotates relative to the second handle and is buckled with the stop position to lock the first handle and the second handle.