A type of toothed pliers

Abstract

This utility model discloses a toothed pliers, belonging to the field of hand tool technology, including jaws A, handle A, jaws B, and handle B; jaw B is hinged to handle B, jaw B is hinged to handle A, handle B is hinged with a connecting rod, and a spring is provided between handle A and jaw B; a pressing element is hinged inside handle B; toothed jaws A and B protrude from the surface of the jaws, a groove A is provided at the connection between toothed jaw A and jaw A, and an arc groove A is provided on the surface of jaw A; toothed jaws B are provided at the connection between toothed jaw B and jaw B, and an arc groove B is provided on the surface of jaw B; the thickness of connecting blocks A and B is less than the thickness of the jaws; the surface area of ​​the jaws is increased without affecting the use of the pliers, so that the pressure is evenly distributed and stress concentration is avoided. At the same time, the high and low distributed connecting blocks further optimize the force transmission path, ensuring that the clamping force is applied to the workpiece more evenly, reducing damage to fragile materials, and also reducing the overall weight of the pliers.

Description

Technical Field

[0001] This utility model relates to a toothed pliers, belonging to the field of hand tool technology. Background Technology

[0002] Pliers, as a common clamping tool, are widely used in machining, pipe installation, automotive repair, and other fields. Traditional pliers typically consist of three main parts: the jaws, the hinge shaft, and the handle. The jaws often employ a flat or simple toothed design to meet basic clamping requirements. However, in practical use, existing pliers exhibit significant shortcomings in clamping performance, workpiece protection, and structural strength, necessitating a novel structural design to address these issues. Utility Model Content

[0003] This utility model addresses the problems existing in the prior art by providing a toothed pliers.

[0004] The purpose of this utility model is achieved through the following technical solution: a toothed pliers, comprising jaws A, handle A, jaws B, and handle B; jaws A are mounted on one end of handle A; a hinge shaft A is provided at the connection between the tail end of jaw B and one end of handle B; a hinge shaft B is provided at the connection between one side of jaw B and one end of handle A; a connecting rod is hinged to one side of handle B, and the other end of the connecting rod is disposed inside handle A; a spring is provided between handle A and jaws B; a pressing element is hinged inside handle B, and a protrusion is provided on one side of the pressing element; the jaws... A includes toothed jaws A, which protrude from the surface of jaw A, and a groove A is provided at the connection between the toothed jaws A and jaw A. The surface of jaw A is provided with an arc-shaped groove A. Jaw B includes toothed jaws B, which protrude from the surface of jaw B, and a groove B is provided at the connection between the toothed jaws B and jaw B. The surface of jaw B is provided with an arc-shaped groove B. Jaw A has a connecting block A near handle A, and the thickness of connecting block A is less than the thickness of jaw A. Jaw B has a connecting block B near handle B, and the thickness of connecting block B is less than the thickness of jaw B.

[0005] Preferably, the lower end of the pressing member protrudes from the handle B.

[0006] Preferably, the width of the portion of the pressing member protruding from the handle B is greater than the width of the portion of the pressing member located within the handle B.

[0007] Preferably, the pressing element is provided with a rubber sleeve.

[0008] Preferably, the surface of the rubber sleeve is provided with anti-slip protrusions.

[0009] Preferably, the shape of the groove A is consistent with the outer contour shape of the toothed jaw A.

[0010] Preferably, the shape of the groove B is consistent with the outer contour shape of the toothed jaw B.

[0011] Preferably, a limiting block is provided below the hinge of the inner jaw B of the handle A.

[0012] Preferably, the jaws B are provided with mounting holes, the handle A is provided with mounting blocks, one end of the spring is connected to the mounting holes, and the other end of the spring is connected to the mounting blocks.

[0013] The present invention has the following beneficial effects: (1) When ordinary pliers clamp precision parts (such as copper pipes and plastic parts), they are prone to indentation or deformation due to excessive local pressure. The present invention sets toothed jaws protruding from the surface of the pliers and adds grooves, which increases the surface area of ​​the pliers without affecting the use of the pliers. When using the pliers for clamping, the pressure is evenly distributed to avoid stress concentration. At the same time, the high and low distributed connecting blocks further optimize the force transmission path, ensuring that the clamping force is applied to the workpiece more evenly and reducing damage to fragile materials. In addition, while optimizing the force distribution, the overall weight of the pliers is also reduced.

[0014] (2) By setting the toothed jaws to protrude from the jaw surface and cooperate with the grooves and arc grooves, the stress is transmitted to the handle more evenly, reducing the risk of single-point wear, greatly improving the structural strength and extending the tool life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the closed state of the pliers of this utility model;

[0016] Figure 2 This is a schematic diagram showing the pliers of this utility model in the open state;

[0017] Figure 3 This is a schematic diagram of the spring structure in this utility model.

[0018] In the diagram: 1. Jaw A; 2. Toothed jaw B; 3. Connecting block A; 4. Jaw B; 5. Toothed jaw B; 6. Connecting block B; 7. Handle A; 8. Handle B; 9. Hinge shaft A; 10. Hinge shaft B; 11. Connecting rod; 12. Connection point; 13. Spring; 14. Pressing element; 15. Protrusion; 16. Rubber sleeve; 17. Groove A; 18. Groove B; 19. Arc groove A; 20. Arc groove B; 21. Mounting hole; 22. Mounting block; 23. Limiting block. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and the accompanying description.

[0020] A toothed pair of pliers includes jaws A1, handles A7, jaws B4, and handles B8;

[0021] Jaws A1 and B4 are rounded to facilitate gripping of tooling parts. Jaw A1 is mounted on one end of handle A7.

[0022] A hinge shaft A9 is provided at the connection point between the tail end of the jaws B4 and one end of the handle B8, through which the jaws B4 and the handle B8 are hinged. A hinge shaft B10 is provided at the connection point between one side of the jaws B4 and one end of the handle A7.

[0023] A connecting rod 11 is hinged to one side of handle B8 at connection point 12, and the other end of the connecting rod 11 is located inside handle A7.

[0024] A spring 13 is provided between the handle A 7 and the jaws B 4. A mounting block 22 is provided inside the handle A 7. A mounting hole 21 is provided in the jaws B 4. One end of the spring 13 is connected to the mounting hole 21, and the other end of the spring 13 is connected to the mounting block 22.

[0025] A pressing member 14 is hinged inside the handle B 8. A protrusion 15 is provided on one side of the pressing member 14. The lower end of the pressing member 14 protrudes from the handle B 8. The width of the part of the pressing member 14 that protrudes from the handle B 8 is greater than the width of the part of the pressing member 14 located inside the handle B 8. A rubber sleeve 16 is fitted on the pressing member 14. The surface of the rubber sleeve 16 is provided with anti-slip protrusions.

[0026] A limiting block 23 is provided below the hinge of the inner jaws B 4 of handle A 7;

[0027] Jaw A1 includes toothed jaws A2, which protrude from the surface of jaw A1. A groove A17 is provided at the connection between toothed jaws A2 and jaw A1. The shape of groove A17 is consistent with the outer contour of toothed jaws A1. An arc-shaped groove A19 is provided on the surface of jaw A1. Jaw B4 includes toothed jaws B5, which protrude from the surface of jaw B4. A groove B18 is provided at the connection between toothed jaws B15 and jaw B4. The shape of groove B18 is consistent with the outer contour of toothed jaws B18. An arc-shaped groove B20 is provided on the surface of jaw B4.

[0028] A connecting block A3 is provided near the handle A7 of the jaw A1. The thickness of the connecting block A3 is less than the thickness of the jaw A1. A connecting block B6 is provided near the handle B8 of the jaw B4. The thickness of the connecting block B6 is less than the thickness of the jaw B4.

[0029] When in use, the toothed pliers are initially in the open state, with jaws A1 and B4 aligned with the fixture. Then, handle B8 is pressed down, and one side of handle B8 abuts against the limit block 23, locking the toothed pliers. At this time, the toothed pliers can be used to tighten or adjust the fixture. After use, press the pressing rod 14, and the protrusion 15 of the pressing rod 14 abuts against the connecting rod 11, thereby releasing the toothed pliers from the locked state.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the technical essence of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A type of toothed pliers, characterized in that, It includes jaws A (1), handle A (7), jaws B (4), and handle B (8); jaws A (1) are installed at one end of handle A (7), the tail end of jaw B (4) is connected to one end of handle B (8) with a hinge shaft A (9), one side of jaw B (4) is connected to one end of handle A (7) with a hinge shaft B (10), one side of handle B (8) is hinged with a connecting rod (11), the other end of the connecting rod (11) is located inside handle A (7), and a spring (13) is provided between handle A (7) and jaws B (4); a pressing element (14) is hinged inside handle B (8), and a protrusion (15) is provided on one side of the pressing element (14). The jaw A (1) includes a toothed jaw A (2), which protrudes from the surface of the jaw A (1) and has a groove A (17) at the connection between the toothed jaw A (2) and the jaw A (1). The surface of the jaw A (1) is provided with an arc-shaped groove A (19). The jaw B (4) includes a toothed jaw B (5), which protrudes from the surface of the jaw B (4). The connection between the toothed jaw B (5) and the jaw B (4) is provided with a groove B (18) and the surface of the jaw B (4) is provided with an arc-shaped groove B (20). The jaw A (1) is provided with a connecting block A (3) near the handle A (7), and the thickness of the connecting block A (3) is less than the thickness of the jaw A (1). The jaw B (4) is provided with a connecting block B (6) near the handle B (8), and the thickness of the connecting block B (6) is less than the thickness of the jaw B (4).

2. The toothed pliers according to claim 1, characterized in that, The lower end of the pressing element (14) protrudes from the handle B (8).

3. The toothed pliers according to claim 2, characterized in that, The width of the protruding part of the pressing member (14) protruding from the handle B (8) is greater than the width of the pressing member (14) part located inside the handle B (8).

4. The toothed pliers according to claim 1, characterized in that, The pressing element (14) is fitted with a rubber sleeve (16).

5. The toothed pliers according to claim 4, characterized in that, The surface of the rubber sleeve (16) is provided with anti-slip protrusions.

6. The toothed pliers according to claim 1, characterized in that, The shape of the groove A (17) is consistent with the outer contour shape of the toothed jaw A (2).

7. The toothed pliers according to claim 1, characterized in that, The shape of the groove B (18) is consistent with the outer contour shape of the toothed jaw B (5).

8. The toothed pliers according to claim 1, characterized in that, A limiting block (23) is provided below the hinge of the inner jaw B (4) of the handle A (7).

9. The toothed pliers according to claim 1, characterized in that, The jaws B are provided with mounting holes (21), the handle A (7) is provided with mounting blocks (22), one end of the spring (13) is connected to the mounting holes (21), and the other end of the spring (13) is connected to the mounting blocks (22).

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