A method for preventing a clamp from pinching fingers

Abstract

The present invention relates to the technical field of manual tools, and in particular to a method for preventing pinching of a clamp, which includes a fixed clamp body and a sliding clamp body. A long groove is provided on the fixed clamp body, and the fixed clamp body and the sliding clamp body are slidably connected. A sliding groove having an included angle with the long groove is provided on one side of the long groove of the fixed clamp body. An anti-pinching mechanism cooperating with the sliding groove is provided on the sliding clamp body. When adjusting the gear position, the rivet slides in the long groove, and the pin shaft slides in the sliding groove. Due to the included angle between the sliding groove and the long groove, the distance between the pin shaft and the long groove changes during the sliding of the pin shaft in the sliding groove. Since the positioning block rotates around the rivet, the clamping protrusion of the positioning block rotates by a corresponding angle in the sector groove. When the sliding clamp body is adjusted to a certain fixed gear position and then the fixed clamp body and the sliding clamp body are compressed, when the convex platform of the sector groove on the sliding clamp body contacts the clamping protrusion of the positioning block, it cannot continue to rotate. At this time, there is a gap at the tails of the fixed clamp body and the sliding clamp body, realizing the anti-pinching function.

Description

Technical Field:

[0001] The present invention relates to the technical field of manual tools, and particularly to a method for preventing finger pinching of pliers. Background Art:

[0002] For a traditional water pump plier, its structure is as described in the patent application with the publication number WO2022147598A1 and the name "Pliers", which mainly consists of a fixed plier body, a sliding plier body, and rivets. A long slot is provided on the fixed plier body, and the two are connected together by rivets; during use, the position of the sliding plier body is adjusted according to the size of the workpiece to change the opening amount of the plier body. Since there is no limiting structure between the fixed plier body and the sliding plier body, during the process of clamping the workpiece, the tails of the fixed plier body and the sliding plier body may accidentally touch each other, easily pinching the fingers and posing a safety problem.

[0003] In summary, how to achieve the problem of preventing finger pinching of the water pump plier has become an urgent technical problem in the industry. Summary of the Invention:

[0004] The present invention aims to make up for the deficiencies of the prior art and provides a method for preventing finger pinching of pliers, which solves the problem that the tails of the fixed plier body and the sliding plier body in the existing water pump plier are prone to touch each other and pinch the fingers.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] A method for preventing finger pinching of pliers includes a fixed plier body and a sliding plier body. A long slot is provided on the fixed plier body, and the fixed plier body and the sliding plier body are slidably connected. A chute having an included angle with the long slot is provided on one side of the long slot of the fixed plier body, and an anti-finger-pinching mechanism cooperating with the chute is provided on the sliding plier body. The anti-finger-pinching mechanism includes a circular hole provided at the head of the sliding plier body and a sector-shaped slot on the side wall of the circular hole. A positioning block is rotatably installed in the circular hole, a clamping protrusion is provided at the edge of the positioning block, and the clamping protrusion is rotatably arranged in the sector-shaped slot. A pin shaft is provided at the bottom of the positioning block, and the pin shaft is slidably arranged in the chute of the fixed plier body. A rivet hole is provided at the center of the positioning block, and a rivet passes through the rivet hole and is rotatably connected to the positioning block. The rivet is slidably arranged in the long slot, a small rivet cap covering the long slot is provided at one end of the rivet, and a large rivet cap covering the positioning block is provided at the other end of the rivet;

[0007] When adjusting the gear position, the rivet slides in the long slot, and the pin shaft slides in the chute. Due to the included angle between the chute and the long slot, the distance between the pin shaft and the long slot changes during the sliding process of the pin shaft in the chute. Since the positioning block rotates around the rivet, the clamping protrusion of the positioning block rotates by a corresponding angle in the sector-shaped slot. When the sliding plier body is adjusted to a certain fixed gear position and then the fixed plier body and the sliding plier body are compressed, when the convex platform of the sector-shaped slot on the sliding plier body contacts the clamping protrusion of the positioning block, it cannot continue to rotate. At this time, there is a gap between the tails of the fixed plier body and the sliding plier body, realizing the function of preventing finger pinching.

[0008] The included angle between the long groove and the sliding groove is 1-10 degrees.

[0009] An adjusting gap is provided between the rivet and the long groove.

[0010] The positioning block and the clamping projection are integrally formed.

[0011] The pin shaft is fixedly inserted into the installation groove at the bottom of the positioning block.

[0012] Adopting the above scheme, the present invention has the following beneficial effects:

[0013] By providing an anti-pinch mechanism on the sliding pliers body in the present invention, when adjusting the gear, the rivet slides in the long groove, and the pin shaft slides in the sliding groove of the fixed pliers body. Since there is a certain angle between the sliding groove and the long groove of the fixed pliers body, the distance between the pin shaft and the long groove changes during the sliding process of the pin shaft in the sliding groove. Since the positioning block rotates around the rivet, the clamping projection of the positioning block can rotate a certain angle in the fan-shaped groove. When adjusting to a certain fixed gear of the sliding pliers body and compressing the fixed pliers body and the sliding pliers body, when the convex platform of the fan-shaped groove on the sliding pliers body contacts the clamping projection of the positioning block, it cannot rotate further. At this time, there is a certain gap at the tail of the fixed pliers body and the sliding pliers body, realizing the anti-pinch function. Description of the drawings:

[0014] Figure 1 It is a schematic structural diagram of the present invention in the closed state.

[0015] Figure 2 It is a schematic structural diagram of the present invention in a partially opened state.

[0016] Figure 3 It is a schematic structural diagram of the present invention in the fully opened state.

[0017] Figure 4 It is a schematic structural diagram of the fixed pliers body of the present invention.

[0018] Figure 5 It is a schematic structural diagram of the sliding pliers body of the present invention.

[0019] Figure 6 It is a schematic structural diagram of the positioning block of the present invention.

[0020] Figure 7 It is a schematic cross-sectional structural diagram of the positioning block part of the present invention.

[0021] In the figure, 1. Fixed pliers body, 2. Sliding pliers body, 3. Long groove, 4. Sliding groove, 5. Round hole, 6. Fan-shaped groove, 7. Positioning block, 8. Clamping projection, 9. Pin shaft, 10. Rivet hole, 11. Rivet, 12. Small rivet cap, 13. Large rivet cap. Specific embodiments:

[0022] To clearly illustrate the technical features of this solution, the present invention will be elaborated in detail below through specific embodiments and in conjunction with its accompanying drawings.

[0023] As Figure 1-7 shown, a method for preventing pinching of a clamp includes a fixed clamp body 1 and a sliding clamp body 2. A long groove 3 is provided on the fixed clamp body 1. The fixed clamp body 1 and the sliding clamp body 2 are slidably connected. A sliding groove 4 with an included angle with the long groove 3 is provided on one side of the long groove 3 of the fixed clamp body 1. An anti-pinching mechanism cooperating with the sliding groove 4 is provided on the sliding clamp body 2. The anti-pinching mechanism includes a circular hole 5 provided at the head of the sliding clamp body 2 and a sector-shaped groove 6 on the side wall of the circular hole 5. A positioning block 7 is rotatably installed in the circular hole 5. A clamping protrusion 8 is provided on the edge of the positioning block 7. The clamping protrusion 8 is rotatably arranged in the sector-shaped groove 6. A pin shaft 9 is provided at the bottom of the positioning block 7. The pin shaft 9 is slidably arranged in the sliding groove 4 of the fixed clamp body 1. A rivet hole 10 is provided at the center of the positioning block 7. A rivet 11 passes through the rivet hole 10 and is rotatably connected to the positioning block 7. The rivet 11 is slidably arranged in the long groove 3. A small rivet cap 12 covering the long groove 3 is provided at one end of the rivet 11. A large rivet cap 13 covering the positioning block 7 is provided at the other end of the rivet 11.

[0024] When adjusting the gear position, the rivet 11 slides in the long groove 3, and the pin shaft 9 slides in the sliding groove 4. Due to the included angle between the sliding groove 4 and the long groove 3, the distance between the pin shaft 9 and the long groove 3 changes during the sliding of the pin shaft 9 in the sliding groove 4. Since the positioning block 7 rotates around the rivet 11, the clamping protrusion 8 of the positioning block 7 rotates by a corresponding angle in the sector-shaped groove 6. When the sliding clamp body 2 is adjusted to a certain fixed gear position and the tail parts of the fixed clamp body 1 and the sliding clamp body 2 are compressed, when the convex platform of the sector-shaped groove 6 on the sliding clamp body 2 contacts the clamping protrusion 8 of the positioning block 7, it cannot continue to rotate. At this time, there is a gap between the tail parts of the fixed clamp body 1 and the sliding clamp body 2, realizing the anti-pinching function.

[0025] The included angle between the long groove 3 and the sliding groove 4 is 1 - 10 degrees.

[0026] An adjusting gap is provided between the rivet 11 and the long groove 3 to ensure the smooth sliding of the rivet 11 in the long groove 3 and the pin shaft 9 in the sliding groove 4, avoiding jamming.

[0027] The positioning block 7 and the clamping protrusion 8 are integrally formed.

[0028] The pin shaft 9 is fixedly inserted into the installation groove at the bottom of the positioning block 7.

[0029] Working principle:

[0030] When adjusting the gear, the rivet 11 slides in the long slot 3, and the pin shaft 9 slides in the sliding slot 4 of the fixed jaw body 1. Since there is a certain angle between the sliding slot 4 and the long slot 3 of the fixed jaw body 1, the distance between the pin shaft 9 and the long slot 3 changes during the sliding process of the pin shaft 9 in the sliding slot 4. Since the positioning block 7 rotates around the rivet 11, the clamping projection 8 of the positioning block 7 can rotate a certain angle in the fan-shaped slot 6.

[0031] It is precisely because the clamping projection 8 of the positioning block 7 can only rotate a certain angle that the effect of controlling the clearance between the tails of the fixed jaw body 1 and the sliding jaw body 2 and preventing pinching is achieved.

[0032] When in a certain fixed gear, due to the rivet 11 and the pin shaft 9 on the positioning block 7, the positioning block 7 has only one fixed angle. When the fan-shaped slot 6 on the sliding jaw body 2 contacts the clamping projection 8 of the positioning block 7, there is a fixed range of the angle between them. Therefore, the clearance between the tails of the fixed jaw body 1 and the sliding jaw body 2 is controllable.

[0033] When the handle is gripped tightly, the sliding jaw body 2 rotates around the positioning block 7 with the rivet 11 as the axis. When the convex platform of the fan-shaped slot 6 in the sliding jaw body 2 contacts the clamping projection 8 of the positioning block 7, the sliding jaw body 2 stops rotating. At this time, there is a certain clearance between the tails of the fixed jaw body 1 and the sliding jaw body 2 to prevent pinching.

[0034] The above specific implementation manners cannot be used as a limitation to the protection scope of the present invention. For those skilled in the art of this technology, any alternative improvement or transformation made to the implementation manner of the present invention falls within the protection scope of the present invention.

[0035] Where the present invention is not described in detail are all well-known technologies to those skilled in the art of this technology.

Claims

1. A method for preventing pinching of a clamp, including a fixed clamp body and a sliding clamp body, wherein a long groove is provided on the fixed clamp body, and the fixed clamp body and the sliding clamp body are slidably connected, and is characterized in that: A chute with an included angle with the long groove is arranged on one side of the long groove of the fixed jaw body, and an anti-pinch mechanism cooperating with the chute is arranged on the sliding jaw body. The anti-pinch mechanism includes a round hole arranged at the head of the sliding jaw body and a sector groove on the side wall of the round hole. A positioning block is rotatably installed in the round hole. A clamping projection is arranged on the edge of the positioning block. The clamping projection is rotatably arranged in the sector groove. A pin shaft is arranged at the bottom of the positioning block. The pin shaft is slidably arranged in the chute of the fixed jaw body. A rivet hole is arranged at the center of the positioning block. A rivet passes through the rivet hole and is rotatably connected with the positioning block. The rivet is slidably arranged in the long groove. A small rivet cap covering the long groove is arranged at one end of the rivet, and a large rivet cap covering the positioning block is arranged at the other end of the rivet; When adjusting the gear position, the rivet slides in the long groove and the pin shaft slides in the chute. Since there is an included angle between the chute and the long groove, the distance between the pin shaft and the long groove changes during the sliding process of the pin shaft in the chute. Since the positioning block rotates around the rivet, the clamping projection of the positioning block rotates by a corresponding angle in the sector groove. When the sliding jaw body is adjusted to a certain fixed gear position and then the fixed jaw body and the sliding jaw body are compressed, when the convex platform of the sector groove on the sliding jaw body contacts the clamping projection of the positioning block, it cannot rotate further. At this time, there is a gap between the tails of the fixed jaw body and the sliding jaw body, realizing the anti-pinch function.

2. The anti-pinch method of a clamp according to claim 1, characterized in that: The included angle between the long groove and the chute is 1-10 degrees.

3. The anti-pinch method of a clamp according to claim 1, characterized in that: An adjusting gap is arranged between the rivet and the long groove.

4. A method for preventing pinching of fingers by a clamp according to claim 1, characterized in that: The positioning block and the clamping projection are integrally formed.

5. A method for preventing a clamping tool from pinching fingers according to claim 1, characterized in that: The pin shaft is fixedly inserted into the installation groove at the bottom of the positioning block.

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