Multi-gear slip-joint pliers capable of being rapidly adjusted
Through the active rack, driven rack and intermediate gear structure, combined with the clamping pawl and torsion spring mechanism, the problem of change in handle distance when adjusting the jaws of the pliers is solved, the stability of the jaw adjustment and the convenience of operation are achieved, and the use efficiency and clamping capacity of the pliers are improved.
Patent Information
- Application Number
- CN202511123632.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-12
- Publication Date
- 2025-09-26
AI Technical Summary
When adjusting the jaw size of existing carp joint pliers, the distance between the handles changes, and the hand grip position needs to be adjusted frequently, resulting in inconvenient operation and muscle fatigue, and poor spatial adaptability.
It adopts an active rack, a driven rack and an intermediate gear structure, combined with a snap pawl and a torsion spring mechanism to achieve synchronous adjustment of the jaw size and stable distance between the fixed handle and the sliding handle. Through gear engagement and rotation of the snap pawl, multi-gear rapid adjustment is achieved.
During the jaw adjustment process, the handle distance is kept stable, the adjustment of the grip position is reduced, the operating efficiency and clamping ability are improved, and the control comfort and consistency are enhanced.
Smart Images
Figure CN120696931A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of carp joint pliers, and in particular to a multi-position quickly adjustable carp joint pliers. Background Art
[0002] During the use of carp joint pliers, the size of the jaws needs to be adjusted. However, as the jaws are adjusted, the distance between the two handles will also change. Generally, the larger the jaws, the closer the distance between the two handles, so the hand grip position needs to be constantly adjusted. In addition, when the distance between the handles is too large, it can only be operated with both hands, and the force is small; or when the distance between the handles is too small, the two handles cannot be grasped to adjust the jaws. The spatial adaptability is poor, and frequent adaptation to different handle angles may cause the wrist to exert force in an unnatural posture. Long-term use increases the risk of muscle fatigue or strain. When the handles are opened too wide, the palm needs to be overstretched, reducing the comfort of operation. Summary of the Invention
[0003] The present invention provides a multi-position quickly adjustable carp pliers, which can adjust the jaws while synchronously adjusting the distance between the fixed handle and the sliding handle to ensure a stable distance between the two. There is no need to repeatedly adjust the position of the hand when doing work, making it convenient to apply force.
[0004] To this end, the technical solutions adopted are as follows: A multi-position quickly adjustable carp pliers comprises a fixed handle and a sliding handle, the fixed handle comprising a clamping body and an adjusting leg hinged to the clamping body, a driven rack being fixed to the connecting end of the adjusting leg and the clamping body, the driven rack being an arc-shaped structure formed around a hinge axis, an active rack being fixed to the sliding handle, the active rack being a linear structure, an intermediate gear being meshed with both the driven rack and the active rack, the intermediate gear being rotatably connected to the fixed handle, and when the sliding handle moves to gradually open the jaws, the active rack prompts the driven rack to drive the adjusting leg to rotate outward through the intermediate gear.
[0005] A further technical solution is that it also includes a connecting shaft that hinges the fixed handle and the sliding handle, the fixed handle is provided with an adjustment groove, the sliding handle is provided with an adjustment hole corresponding to the adjustment groove, the side wall of the adjustment hole is fixed with a clamping rack arranged along the opening and closing direction of the jaws, the adjustment hole has a clamping pawl inside, the connecting shaft is fixed to the fixed handle and passes through the adjustment groove, the clamping pawl and the adjustment hole in sequence and is locked by a nut, the clamping pawl is rotatably connected to the connecting shaft, and a torsion spring is connected between the clamping pawl and the adjustment groove, and the torsion spring forces the clamping tip of the clamping pawl to press against the clamping rack around the connecting shaft.
[0006] A further technical solution is that the tooth depth of the active rack is greater than the tooth depth of the engaging rack.
[0007] A further technical solution is that the engaging pawl is a quadrilateral structure, and the other three corners except the engaging tip are abutment angle one, abutment angle two and abutment angle three in clockwise order. When the engaging tip of the engaging pawl abuts against the engaging rack, abutment angle two synchronously abuts against the side wall of the adjustment hole. When the engaging tip of the engaging pawl rotates out of the engaging rack, abutment angle one and abutment angle three abut against the side wall of the adjustment hole.
[0008] A further technical solution is that torsion spring leg holes are provided on the adjustment groove and the clamping pawl, and the two ends of the torsion spring are respectively inserted into the two torsion spring leg holes and fixed.
[0009] A further technical solution is that the thickness of the engaging pawl is equal to the depth of the adjustment hole.
[0010] A further technical solution is that when the jaws are fully closed, the adjustment groove and the adjustment hole coincide with each other.
[0011] The working principle and beneficial effects of this application are: 1. Through the active rack, driven rack and intermediate gear, the jaw size can be changed while the distance between the fixed handle and the sliding handle is always constant, making it easier for users to grasp and apply force without having to repeatedly adjust the grip position.
[0012] 2. In addition, two lever effects are formed between the adjusting legs, the clamping body and the connecting shaft. When clamping an object, the force of the hand is first transmitted to the clamping body through the hinge shaft, and the clamping body then uses the connecting shaft lever to do work. The force is gradually increased and transmitted, thereby improving the clamping capacity of the pliers.
[0013] 3. By adjusting the connection position of the snap-on pawl and the snap-on rack, the jaw size can be adjusted steplessly to correspond to different jaw sizes. During the jaw adjustment process, you only need to use both hands to rotate the fixed handle and the sliding handle outward to overcome the elastic force of the torsion spring, so that the snap-on pawl can be disengaged from its original position on the snap-on rack and then slide to the desired new position. Then, rotate the fixed handle and the sliding handle inward, and the snap-on pawl can be reset and locked with the snap-on rack again. The whole process is simple to operate and the movement is smooth, which improves the efficiency of the pliers when adjusting the jaws and increases the consistency of the overall work. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The present application will be further described in detail below with reference to the accompanying drawings and specific implementation methods.
[0015] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the structure of the jaws opened in this application; Figure 3This is a schematic diagram of the structure when adjusting the jaws for this application; Figure 4 This is a schematic diagram of the structure of the sliding handle described in this application; Figure 5 This is a schematic structural diagram of the fixed handle described in this application; Figure 6 This is a schematic structural diagram of the torsion spring described in this application; Figure 7 This is a structural diagram of the latching pawl described in this application.
[0016] In the figure: 1. Fixed handle; 10. Adjusting groove; 11. Clamping body; 12. Adjusting leg; 2. Sliding handle; 20. Adjusting hole; 201. Snap-on rack; 30. Articulated shaft; 31. Driven rack; 32. Active rack; 33. Intermediate gear; 4. Connecting shaft; 5. Snap-on pawl; 51. Snap-on tip; 52. Abutment angle 1; 53. Abutment angle 2; 54. Abutment angle 3; 6. Nut; 7. Torsion spring; 71. Torsion spring leg hole. DETAILED DESCRIPTION
[0017] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.
[0018] like Figure 1-Figure 7 As shown, a multi-position quickly adjustable carp pliers comprises a fixed handle 1 and a sliding handle 2, the fixed handle 1 comprising a clamping body 11 and an adjusting leg 12 hinged to the clamping body 11, a driven rack 31 is fixed to the connecting end of the adjusting leg 12 and the clamping body 11, the driven rack 31 is an arc-shaped structure formed around a hinge shaft 30, an active rack 32 is fixed on the sliding handle 2, the active rack 32 is a straight line structure, an intermediate gear 33 meshingly connected to the driven rack 31 and the active rack 32 is provided between the driven rack 31 and the active rack 32, the intermediate gear 33 is rotatably connected to the fixed handle 1, and when the sliding handle 2 moves to gradually open the jaws, the active rack 32 prompts the driven rack 31 to drive the adjusting leg 12 to rotate outward through the intermediate gear 33.
[0019] See Figure 2When the width of the jaws increases, the sliding handle 2 moves downward, driving the active rack 32 to move downward synchronously, and the intermediate gear 33 meshing with the active rack 32 rotates counterclockwise, driving the driven rack 31 to expand the adjusting leg 12 outward around the hinge shaft 30. Because the legs of the sliding handle 2 are close to the adjusting leg 12 by a certain distance, the overall distance between the fixed handle 1 and the sliding handle 2 will not change significantly, and there is no need to adjust the hand grip position. On the contrary, when the sliding handle 2 moves away from the fixed handle 1, the adjusting leg 12 is locked inward, always ensuring that the distance between the fixed handle 1 and the sliding handle 2 is stable, thereby facilitating the user's grip and force application, and there is no need to repeatedly adjust the grip position.
[0020] like Figure 1-Figure 3 As shown, an embodiment of the fixed handle 1 and the sliding handle 2 is that it also includes a connecting shaft 4 that allows the two to be hinged, the fixed handle 1 is provided with an adjustment groove 10, and the sliding handle 2 is provided with an adjustment hole 20 corresponding to the adjustment groove 10, and a snap-fit rack 201 arranged along the opening and closing direction of the jaws is fixed on the side wall of the adjustment hole 20, and a snap-fit pawl 5 is provided inside the adjustment hole 20, the connecting shaft 4 is fixed on the fixed handle 1 and passes through the adjustment groove 10, the snap-fit pawl 5 and the adjustment hole 20 in sequence and is locked by a nut 6, the snap-fit pawl 5 is rotatably connected to the connecting shaft 4, and a torsion spring 7 is connected between the snap-fit pawl 5 and the adjustment groove 10, and the torsion spring 7 forces the snap-fit tip 51 of the snap-fit pawl 5 to press against the snap-fit rack 201 around the connecting shaft 4.
[0021] Therefore, when adjusting the opening size of the carp pliers, the fixed handle 1 and the sliding handle 2 are grasped by both hands and rotated outward around the connecting shaft 4. Figure 2 As shown, since the engaging pawl 5 can rotate to a certain extent in the adjusting hole 20, when the applied force is greater than the elastic force of the torsion spring 7, the engaging pawl 5 will rotate out of the restriction of the engaging rack 201, so that it can be affected by the connecting shaft 4. As the fixed handle 1 slides in the adjusting hole 20, after selecting the corresponding engaging position according to the required jaw size, the fixed handle 1 and the sliding handle 2 are rotated inward in the opposite direction, so that the tip of the engaging pawl 5 is re-engaged in the engaging rack 201, and the torsion spring 7 continues to work to make the tip of the engaging pawl 5 pressed against the engaging rack 201 and fixed. The whole process is simple and quick to operate. You only need to use two hands to expand the fixed handle 1 and the sliding handle 2 first, so that the engaging pawl 5 can get rid of the force of the torsion spring 7, and then select a new engaging position to close the fixed handle 1 and the sliding handle 2. The adjustment is smooth and easy to operate.
[0022] like Figure 3As shown, during the jaw adjustment process, the active rack 32 will tilt to a certain extent. Therefore, in order to ensure the stable engagement of the active rack 32 and the intermediate gear 33, the depth of the teeth needs to be increased so that they can still engage with each other when the distance between the two changes. In this embodiment, because the engaging pawl 5 has disengaged from the position of the engaging rack 201, the position deviation of the active rack 32 when tilted is also within the range of the height of the engaging rack 201. Therefore, the tooth depth of the intermediate gear 33 is greater than the tooth depth of the engaging rack 201, which can ensure that the intermediate gear 33 and the active rack 32 are always engaged, and the larger tooth depth can also provide greater supporting force.
[0023] The engaging pawl 5 is a quadrilateral structure. The other three corners, excluding the engaging tip 51, are, in clockwise order, contact angle 1 52, contact angle 2 53, and contact angle 3 54. When the engaging tip 51 of the engaging pawl 5 contacts the engaging rack 201, the contact angle 2 53 contacts the side wall of the adjustment hole 20 simultaneously. When the engaging tip 51 of the engaging pawl 5 rotates away from the engaging rack 201, the contact angle 1 52 and the contact angle 3 54 contact the side wall of the adjustment hole 20. Figure 1 At this time, the clamping tip 51 is pressed against the clamping rack 201 by the action of the torsion spring 7, and the second abutting angle 53 is also pressed against the side wall of the adjustment hole 20 to form a stable structure. Because the jaws are in a stable working state at this time, the jaws will be clamped when working, so that the clamping pawl 5 will be subjected to a force rotating clockwise around the connecting shaft 4. No matter how large the force is, the positions of the connecting shaft 4, the clamping pawl 5 and the adjustment hole 20 can be kept unchanged, thereby ensuring the working strength of the carp pliers. Otherwise, refer to Figure 3 At this time, the size of the jaws needs to be adjusted, and a counterclockwise force is applied to the clamping pawl 5 around the connecting shaft 4. The clamping tip 51 disengages from the clamping rack 201. Also under the action of the torsion spring 7, the clamping pawl 5 will rotate clockwise. However, after rotating to the disengaged position, the abutment angle 1 52 and the abutment angle 3 54 will be tightly pressed against the side wall of the adjustment hole 20, and the clamping pawl 5 will not rotate anymore. The purpose is to ensure that the disengagement position of the clamping tip 51 is constant and the disengagement angle is not too large, so that it can be quickly reset and clamped after the jaw size adjustment is completed.
[0024] like Figure 5-Figure 7 As shown, both the adjustment groove 10 and the engaging pawl 5 are provided with torsion spring leg holes 71. The two ends of the torsion spring 7 are inserted into the two torsion spring leg holes 71 for fixation. Furthermore, the thickness of the engaging pawl 5 is equal to the depth of the adjustment hole 20, thereby ensuring a smooth and stable rotational connection between the adjustment groove 10, the engaging pawl 5, and the adjustment hole 20. Furthermore, when the jaws are fully closed, the adjustment groove 10 and the adjustment hole 20 overlap, improving the overall structural coordination.
[0025] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A multi-position quickly adjustable carp pliers comprising a fixed handle (1) and a sliding handle (2), characterized in that: The fixed handle (1) comprises a clamping body (11) and an adjusting leg (12) hinged to the clamping body (11); a driven rack (31) is fixed to the connection end of the adjusting leg (12) and the clamping body (11); the driven rack (31) is an arc-shaped structure formed around the hinge shaft (30); an active rack (32) is fixed to the sliding handle (2); the active rack (32) is a linear structure; an intermediate gear (33) is provided between the driven rack (31) and the active rack (32) and is meshed with both; the intermediate gear (33) is rotatably connected to the fixed handle (1); when the sliding handle (2) moves to gradually open the jaws, the active rack (32) causes the driven rack (31) to drive the adjusting leg (12) to rotate outwards through the intermediate gear (33).
2. The multi-position quickly adjustable carp joint pliers according to claim 1, characterized in that: The invention also includes a connecting shaft (4) for hingedly connecting the fixed handle (1) and the sliding handle (2), wherein the fixed handle (1) is provided with an adjustment groove (10), and the sliding handle (2) is provided with an adjustment hole (20) corresponding to the adjustment groove (10), and a clamping rack (201) arranged along the opening and closing direction of the jaws is fixed on the side wall of the adjustment hole (20), and a clamping pawl (5) is provided inside the adjustment hole (20), and the connecting shaft (4) is fixed to the fixed handle (1) and passes through the adjustment groove (10), the clamping pawl (5) and the adjustment hole (20) in sequence and is locked by a nut (6), and the clamping pawl (5) is rotatably connected to the connecting shaft (4), and a torsion spring (7) is connected between the clamping pawl (5) and the adjustment groove (10), and the torsion spring (7) forces the clamping tip (51) of the clamping pawl (5) to be pressed against the clamping rack (201) around the connecting shaft (4).
3. The multi-position quickly adjustable carp joint pliers according to claim 2, characterized in that: The tooth depth of the active rack (32) is greater than the tooth depth of the engaging rack (201).
4. The multi-position quickly adjustable carp joint pliers according to claim 2, characterized in that: The engaging pawl (5) is a quadrilateral structure, and the other three corners except the engaging tip (51) are abutment angle 1 (52), abutment angle 2 (53) and abutment angle 3 (54) in clockwise order. When the engaging tip (51) of the engaging pawl (5) abuts against the engaging rack (201), the abutment angle 2 (53) abuts against the side wall of the adjustment hole (20) synchronously. When the engaging tip (51) of the engaging pawl (5) rotates away from the engaging rack (201), the abutment angle 1 (52) and the abutment angle 3 (54) abut against the side wall of the adjustment hole (20).
5. The multi-position quickly adjustable carp joint pliers according to claim 2, characterized in that: Torsion spring leg holes (71) are provided on the adjustment groove (10) and the clamping pawl (5), and the two ends of the torsion spring (7) are respectively inserted into the two torsion spring leg holes (71) for fixation.
6. The multi-position quickly adjustable carp joint pliers according to claim 2, characterized in that: The thickness of the snap-fit pawl (5) is equal to the depth of the adjustment hole (20).
7. The multi-position quickly adjustable carp joint pliers according to claim 2, characterized in that: When the jaws are fully closed, the adjustment groove (10) and the adjustment hole (20) coincide with each other.