Convenient slip-joint pliers

Abstract

The invention relates to the technical field of slip-joint pliers, in particular to portable slip-joint pliers which comprise a first plier body and a second plier body, the first plier body and the second plier body are hinged in a crossed mode, a sliding groove is formed in the first plier body, a hinge shaft is arranged in the sliding groove, and the second plier body is rotationally arranged on the hinge shaft; a positioning piece used for mutual positioning and fixing is arranged between the sliding groove and the hinge shaft, and an unlocking piece used for unlocking the positioning piece is arranged on the second clamp body. The device has the advantages that stepless adjustment is achieved, independent unlocking adjustment is not needed, and therefore personnel operation is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of carp joint pliers, and in particular to a pair of portable carp joint pliers. Background Art

[0002] Slip-joint pliers are a common hand tool. Their unique sliding fulcrum structure allows them to adjust the jaw opening and closing range to accommodate workpieces of varying sizes. They are widely used in machining, automotive repair, pipeline installation, and other fields. Traditional slip-joint pliers typically utilize a gear groove or ratchet-type adjustment mechanism, requiring the user to manually slide an adjustment knob or button on the pliers to change the fulcrum position to adjust the jaw opening and closing range. However, existing designs still have significant technical limitations in practical use.

[0003] For example, the patent announcement number CN202323511715.7 discloses a carp fish pliers with replaceable teeth, including a first plier arm and a second plier arm, a through hole is opened at the connection between the first plier arm and the second plier arm, and the first plier arm and the second plier arm are hinged by a rotating shaft, and one end of the first plier arm and the second plier arm are provided with teeth through a connecting mechanism, and the connecting mechanism is used for convenient replacement between the teeth and the first plier arm and the second plier arm.

[0004] Regarding the aforementioned related technologies, the inventors discovered that the fixed opening angle design of these slip-joint pliers inherently reflects a conflict between their adjustment mechanism and the dynamic demands of their use. This forces users to compromise between adjustment efficiency and operational continuity when clamping workpieces of varying sizes, significantly reducing the tool's convenience. Summary of the Invention

[0005] In order to solve the above technical problems, the present application provides a convenient carp joint pliers, which has the advantage of stepless adjustment and can be adjusted without separate unlocking, thereby facilitating human operation.

[0006] To achieve the above object, the technical solution of the present invention is as follows: A portable carp-fish pliers comprises a first pliers body and a second pliers body, wherein the first pliers body and the second pliers body are cross-hinged, a sliding groove is provided on the first pliers body, a hinge shaft is provided in the sliding groove, and the second pliers body is rotatably provided on the hinge shaft; A positioning member for mutually positioning and fixing is provided between the sliding groove and the hinge shaft, and an unlocking member for unlocking the positioning member is provided on the second pliers body.

[0007] By implementing the above technical solution, the second pliers body rotates around the hinge axis, thereby enabling the pliers head of the second pliers body and the pliers head of the first pliers body to move closer to or further away from each other, thereby achieving the effect of clamping and opening. At the same time, because the hinge slot can move in the sliding slot, the position of the hinge axis can be adjusted to adjust the distance between the pliers heads of the first pliers body and the second pliers body when closed, thereby meeting the requirements for clamping products of different widths; after manually adjusting the position of the hinge axis, it is fixed by a positioning member to prevent it from sliding due to external force during clamping, thereby preventing the product from being unable to be clamped. At the same time, the hinge axis can be unlocked by an unlocking member to adjust the position of the hinge axis to meet the clamping requirements of different products.

[0008] As a preferred solution of the present application, the positioning member includes bevel teeth arranged on the side wall of the sliding groove, a positioning block is provided on the hinge shaft, a pawl is provided at the end of the positioning block for engaging with the bevel teeth, and a clamping member for pressing the pawl into the bevel teeth is provided between the positioning block and the first pliers body.

[0009] To implement the above technical solution, the pawl is pressed into the bevel tooth by a pressing member, so that the positioning block is fixed, thereby fixing the hinge shaft; when unlocking is required, the unlocking member overcomes the pressing member so that the pawl is disengaged from the bevel tooth, thereby achieving the unlocking effect.

[0010] As a preferred solution of the present application, the clamping member includes a positioning groove arranged on the side of the pawl away from the bevel teeth, and a spring is arranged in the positioning groove, one end of the spring abuts against the side wall of the sliding groove and the other end abuts against the bottom wall of the positioning groove.

[0011] To implement the above technical solution, the pawl is pressed tightly into the helical teeth under the action of the spring, thereby completing the fixing of the hinge shaft.

[0012] As a preferred solution of the present application, the oblique teeth are arranged along the direction in which the clamp head of the second clamp body is away from the clamp head of the first clamp body.

[0013] To implement the above technical solution, the first pliers body and the second pliers body can be opened to the maximum stroke, and then the bottom wall of the pliers handle can be grasped, so that after the two pliers heads are clamped, force can be continued to be applied to move the pawl horizontally along the direction of the oblique teeth until it is clamped, thereby achieving the effect of automatically adjusting the position of the hinge shaft, which is convenient for people to use.

[0014] As a preferred solution of the present application, the unlocking member includes a hook arranged on the positioning block, and a lever is provided on the second pliers body, and the lever is used to move the hook to rotate the positioning block and thereby disengage the pawl from the oblique stab.

[0015] The above technical solution is implemented, and when the second clamp body is opened relative to the first clamp body, it will drive the lever to move the hook to rotate the positioning block and then the pawl will disengage from the oblique thorn, thereby achieving unlocking, so that the hinge shaft is automatically unlocked and moved laterally under the action of the external opening force, thereby extending the stroke to the maximum. When a person holds the first clamp body and the second clamp body, after the two clamp heads are clamped, they continue to apply force to move the pawl laterally along the oblique teeth until it is clamped, thereby achieving the effect of automatically adjusting the position of the hinge shaft and completing the support and fixation, so that there is no need for separate unlocking and adjustment steps, and automatically meeting the clamping requirements of products of different sizes.

[0016] As a preferred solution of the present application, the unlocking member includes an arc-shaped adjustment groove provided on the positioning block on the side of the hinge shaft away from the clamping member, and a shift rod is provided on the second pliers body, and the shift rod is inserted into the arc-shaped adjustment groove. After the shift rod moves to the end in the arc-shaped adjustment groove, it can shift the positioning block to rotate so that the pawl disengages from the bevel teeth.

[0017] By implementing the above technical solution, the rotation angle of the second clamp body 2 is the same as the angle of the arc-shaped adjustment slot 45, so that when the second clamp body 2 is closed to clamp an object, it can simultaneously drive the pawl 43 on the movable block to press the oblique teeth 41, thereby ensuring the stability of the hinge shaft 3 and reducing the occurrence of slippage between the pawl 43 and the oblique teeth due to excessive clamping force, which in turn leads to the inability to clamp the product.

[0018] As a preferred solution of the present application, the ratio K of the distance a between the center axis of the shift lever and the center axis of the hinge shaft to the distance b between the pawl and the center axis of the hinge shaft is (1 / 3-2 / 3).

[0019] By implementing the above technical solution, the second caliper body can drive the lever to rotate without rotating it too much to disengage the pawl from the unlocking effect, thereby meeting practical convenience. At the same time, the overall horizontal width between the movable block and the lever will not be too large, ensuring the adjustment range between the first caliper body and the second caliper body under the same size, thereby improving its applicability.

[0020] As a preferred solution of the present application, a spring piece is provided at the tail of the second caliper body, and the spring piece abuts against the first caliper body.

[0021] As a preferred solution of the present application, a transversely penetrating mounting groove is provided in the second clamp body, and the spring piece is fixed in the mounting groove.

[0022] The above technical solution is implemented so that when the first pliers body and the second pliers body are grasped, the contact point between the spring piece and the first pliers body becomes a rotation fulcrum, so that the hinge shaft can rotate in the sliding groove, thereby ensuring smoothness when clamping objects, and the spring piece can make the pawl on the hinge shaft engage in the bevel teeth, thereby ensuring the stability of clamping.

[0023] As a preferred solution of the present application, the second pliers body includes a pliers head and a pliers body. A sliding rail is provided on the first pliers body along the length direction of the sliding groove. The pliers head is slidably set on the slide rail. The hinge shaft is set on the pliers body. A toggle groove is provided on the pliers head. A toggle block placed in the toggle groove is provided on the pliers body. The toggle block is used to drive the pliers head to move along the slide rail.

[0024] By implementing the above technical solution, when the clamp body rotates around the hinge axis, the clamp head can be moved horizontally along the slide rail through the shift block, thereby enabling the clamp head to move horizontally to clamp objects, thereby ensuring the stability of clamping.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The second jaw body rotates around the hinge axis, allowing the jaw heads of the second jaw body and the first jaw body to move closer or further away from each other, thereby achieving the effect of clamping and opening. At the same time, because the hinge slot can move in the sliding slot, the position of the hinge axis can be adjusted to adjust the distance between the jaw heads of the first and second jaw bodies when closed, thereby meeting the requirements for clamping products of different widths. After manually adjusting the position of the hinge axis, it is fixed with a positioning member to prevent it from sliding due to external forces during clamping, resulting in the inability to clamp the product. At the same time, the hinge axis can be unlocked with an unlocking member to adjust the position of the hinge axis to meet the clamping requirements of different products. 2. When the second clamp body is opened relative to the first clamp body, it will drive the lever to move the hook to rotate the positioning block and then disengage the pawl from the oblique thorn, thereby achieving unlocking. As a result, the hinge shaft is automatically unlocked and moved laterally under the action of the external force of opening, thereby extending the stroke to the maximum. When a person holds the first clamp body and the second clamp body, after the two clamp heads are clamped, continue to apply force to move the pawl laterally along the direction of the oblique teeth until it is clamped, thereby achieving the effect of automatically adjusting the position of the hinge shaft and completing the support and fixation, thereby achieving the need for separate unlocking and adjustment steps, and automatically meeting the clamping requirements of products of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0028] Figure 2 This is a schematic diagram of the open state of Example 1 of the present application.

[0029] Figure 3 This is a schematic diagram of the locking state of the positioning member in Example 1 of the present application.

[0030] Figure 4 This is a schematic diagram of the unlocked state of the positioning member in Example 1 of the present application.

[0031] Figure 5 This is a schematic diagram of the size ratio of the positioning parts in Example 1 of the present application.

[0032] Figure 6 It is a structural diagram of Example 2 of the present application.

[0033] Figure 7 It is a structural diagram of Example 3 of the present application.

[0034] Figure 8 This is a schematic diagram of the overall structure of the spring in Example 3 of the present application.

[0035] Figure 9 It is a schematic diagram of the overall structure of Example 4 of the present application.

[0036] Figure numerals: 1. first pliers body; 11. sliding groove; 12. sliding rail; 2. second pliers body; 21. pliers head; 22. pliers body; 23. shift block; 3. hinge shaft; 4. positioning member; 41. oblique teeth; 42. positioning block; 43. pawl; 44. spring; 45. arc-shaped adjustment groove; 5. unlocking member; 51. hook; 52. shift rod; 6. spring. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-9 This application is described in further detail.

[0038] Example 1 The embodiment of the present application discloses a portable carp fishing pliers. Figure 1 The portable carp-joint pliers include a first pliers body 1 and a second pliers body 2. The first pliers body 1 and the second pliers body 2 are cross-hinged. A sliding groove 11 is provided on the first pliers body 1. A hinge shaft 3 is provided in the sliding groove 11. The second pliers body 2 is provided on the hinge shaft 3. The second pliers body can be rotatably provided on the hinge shaft or fixed on the hinge shaft, that is, the second pliers body 2 rotates around the hinge shaft 3 or the second pliers body 2 drives the hinge shaft 3 to rotate around the central axis of the hinge shaft 3 at the same time, thereby achieving the pliers head of the second pliers body 2 and the pliers head of the first pliers body 1 to move closer to or away from each other, thereby achieving the effect of clamping and opening. At the same time, because the hinge shaft can move in the sliding groove 11, the distance between the pliers heads of the first pliers body 1 and the second pliers body 2 when closed can be adjusted by adjusting the position of the hinge shaft 3, thereby meeting the needs of clamping products of different widths.

[0039] A positioning member 4 is provided between the sliding groove 11 and the articulated shaft 3 for mutually positioning and fixing. An unlocking member 5 is provided on the second clamp body 2 for unlocking the positioning member 4. That is, after manually adjusting the position of the articulated shaft 3, the positioning member 4 is used to fix it to prevent it from sliding due to external forces during clamping, which may cause the product to be unable to be clamped. At the same time, the articulated shaft 3 can be unlocked by the unlocking member 5 to adjust its position to meet the clamping requirements of different products.

[0040] The positioning member 4 includes a positioning block 42 that is slidably arranged in the sliding groove 11, and a bevel tooth 41 is provided on the side wall of the sliding groove 11. A pawl 43 that is engaged with the bevel tooth 41 is provided at the end of the positioning block 42. A pressing member for pressing the pawl 43 into the bevel tooth 41 is provided between the positioning block 42 and the first pliers body 1, so that the pawl 43 on the positioning block 42 is disengaged from the bevel tooth 41 under the action of the unlocking member 5, and can slide back and forth in the sliding groove 11. When the pawl 43 of the positioning block 42 is engaged with the bevel tooth 41 under the action of the pressing member, the positioning block 42 is positioned and fixed in the sliding groove 11. The articulated shaft 3 rotates and passes through the positioning block 42, thereby allowing the articulated shaft 3 to move and be fixed in the sliding groove 11 following the positioning block 42, while not affecting the articulated shaft 3 itself from rotating around its own central axis. As a result, the second jaw 2 provided on the articulated shaft 3 can follow the articulated shaft 3 and move back and forth in the sliding axis, thereby adjusting the horizontal distance between the first jaw 1 and the jaw head 21 of the second jaw 2, thereby meeting the clamping requirements of different products. At the same time, it ensures that the second jaw 2 can rotate around the articulated shaft 3 to cooperate with the first jaw 1 to clamp the product.

[0041] The clamping member includes a positioning groove provided on the side of the pawl 43 away from the oblique teeth 41, and a spring 44 is provided in the positioning groove, one end of the spring 44 abuts against the side wall of the sliding groove 11 and the other end abuts against the bottom wall of the positioning groove. That is, under the action of the spring 44, the pawl 43 is pressed against the oblique teeth 41, thereby completing the fixation of the hinge shaft 3. The oblique teeth 41 are arranged along the direction of the pliers head of the second pliers body 2 away from the pliers head of the first pliers body 1. This allows a person to open the first pliers body 1 and the second pliers body 2 to the maximum stroke, then hold the bottom wall of the pliers handle, and then, after the two pliers heads are clamped, continue to apply force to move the pawl 43 laterally along the direction of the oblique teeth 41 until it is clamped, thereby achieving the effect of automatically adjusting the position of the hinge shaft 3, making it easier for people to use.

[0042] The unlocking member 5 includes a hook 51 provided on the positioning block 42, and a lever 52 is provided on the second pliers body 2. The lever 52 is used to toggle the hook 51 so that the positioning block 42 rotates and the pawl 43 is disengaged from the oblique thorn. When the second pliers body 2 is opened relative to the first pliers body 1, the lever 52 will be driven to toggle the hook 51 so that the positioning block 42 rotates and the pawl 43 is disengaged from the oblique thorn, thereby achieving unlocking, so that the articulated shaft 3 is automatically unlocked and moved laterally under the action of the opening external force, thereby extending the stroke to the maximum. When a person holds the first pliers body 1 and the second pliers body 2, after the two pliers heads are clamped, they continue to apply force to move the pawl 43 laterally along the direction of the oblique teeth 41 until it is clamped, thereby achieving the effect of automatically adjusting the position of the articulated shaft 3 and completing the support and fixation, thereby achieving the automatic satisfaction of the clamping requirements of products of different sizes without the need for separate unlocking and adjustment steps.

[0043] The ratio K between the distance a between the center axis of the lever 52 and the center axis of the hinge shaft 3 and the farthest horizontal distance b between the pawl 43 and the center axis of the hinge shaft 3 is (1 / 3-2 / 3). In this embodiment, k is 1 / 2, so that when the second pliers 2 drives the lever 52 to rotate, the pawl 43 can be disengaged from the unlocking effect without rotating too large an angle, so as to meet practical convenience. At the same time, the overall horizontal width between the movable block and the lever 52 will not be too large, thereby ensuring the adjustment range between the first pliers 1 and the second pliers 2 under the same size, thereby improving its applicability.

[0044] The implementation principle of a convenient carp-joint pliers in the embodiment of the present application is as follows: when the second pliers body 2 is opened relative to the first pliers body 1, the lever 52 will be driven to move the hook 51 to rotate the positioning block 42 and then the pawl 43 will be disengaged from the oblique thorn, thereby achieving unlocking, so that the articulated shaft 3 is automatically unlocked and moved laterally under the action of the external force of opening, thereby extending the stroke to the maximum. When a person holds the first pliers body 1 and the second pliers body 2, after the two pliers heads are clamped, they continue to apply force to cause the pawl 43 to move laterally along the direction of the oblique teeth 41 until it is clamped, thereby achieving the effect of automatically adjusting the position of the articulated shaft 3 and completing the support and fixation, thereby achieving the automatic satisfaction of the clamping requirements of products of different sizes without the need for separate unlocking and adjustment steps.

[0045] Example 2 The difference between this embodiment and the embodiment is that: the unlocking member 5 includes a positioning block 42 on the side of the hinge shaft 3 away from the pressing member, and an arc-shaped adjustment groove 45 is provided on the second clamp body 2. The lever 52 is inserted into the arc-shaped adjustment groove 45. After the lever 52 moves to the end in the arc-shaped adjustment groove 45, it can toggle the positioning block 42 to rotate so that the pawl 43 disengages from the oblique teeth 41. As a result, the rotation angle of the second clamp body 2 is the same as the angle of the arc-shaped adjustment groove 45. As a result, when the second clamp body 2 is closed to clamp an object, it can simultaneously drive the pawl 43 on the movable block to press the oblique teeth 41, thereby ensuring the stability of the hinge shaft 3 and reducing the possibility of slipping between the pawl 43 and the oblique thorn due to excessive clamping force, which in turn leads to the inability to clamp the product.

[0046] Example 3 The difference between this embodiment and embodiment 1 is that a spring clip 6 is provided at the tail end of the second pliers body 2, and the spring clip 6 abuts against the first pliers body 1, so that when the first pliers body 1 and the second pliers body 2 are gripped, the abutment point of the spring clip 6 and the first pliers body 1 becomes a rotation fulcrum, thereby enabling the hinge shaft 3 to rotate in the sliding groove 11, thereby ensuring smoothness when clamping an object, and the spring clip 6 can enable the pawl 43 on the hinge shaft 3 to be engaged with the bevel teeth 41, thereby ensuring stability of the clamping. At the same time, for the sake of aesthetics, a transverse through-mounting groove is provided in the second pliers body 2, and the spring clip 6 is fixed in the mounting groove.

[0047] Example 4 The difference between this embodiment and embodiment 1 is that: The second pliers 2 includes a pliers head 21 and a pliers body 22. A slide rail 12 is provided on the first pliers body 1 along the length direction of the sliding groove 11. The pliers head 21 is slidably set on the slide rail 12. The hinge shaft 3 is provided on the pliers body 22. A toggle groove is provided on the pliers head 21. A toggle block 23 placed in the toggle groove is provided on the pliers body 22. The toggle block 23 is used to drive the pliers head 21 to move along the slide rail 12, so that when the pliers body 22 rotates around the hinge shaft 3, the pliers head 21 can be moved horizontally along the slide rail 12 through the toggle block 23, so that the pliers head 21 can be moved horizontally to clamp objects, thereby ensuring the stability of clamping.

[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A portable carp joint pliers, characterized by: The invention comprises a first clamp body (1) and a second clamp body (2), wherein the first clamp body (1) and the second clamp body (2) are cross-hinged, a sliding groove (11) is provided on the first clamp body (1), a hinge shaft (3) is provided in the sliding groove (11), and the second clamp body (2) is provided on the hinge shaft (3); A positioning member (4) for mutual positioning and fixing is provided between the sliding groove (11) and the hinge shaft (3), and an unlocking member (5) for unlocking the positioning member (4) is provided on the second clamp body (2).

2. The portable carp joint pliers according to claim 1, characterized in that: The positioning member (4) comprises a positioning block slidably arranged in the sliding groove, a beveled tooth (41) is arranged on the side wall of the sliding groove (11), a ratchet (43) engaged with the beveled tooth (41) is arranged at the end of the positioning block (42), the hinge shaft (2) is rotatably passed through the positioning block (42), and a pressing member for pressing the ratchet (43) into the beveled tooth (41) is arranged between the positioning block (42) and the first clamp body (1).

3. The portable carp joint pliers according to claim 1, characterized in that: The pressing member includes a positioning groove arranged on the side of the pawl (43) away from the bevel tooth (41), and a spring (44) is arranged in the positioning groove, one end of the spring (44) abuts against the side wall of the sliding groove (11) and the other end abuts against the bottom wall of the positioning groove.

4. The portable carp joint pliers according to claim 1, characterized in that: The oblique teeth (41) are arranged along a direction in which the clamp head of the second clamp body (2) is away from the clamp head of the first clamp body (1).

5. The portable carp joint pliers according to claim 1, characterized in that: The unlocking member (5) comprises a hook (51) arranged on the positioning block (42); a shifting rod (52) is arranged on the second caliper body (2); the shifting rod (52) is used to shift the hook (51) so as to rotate the positioning block (42) and thereby disengage the pawl (43) from the bevel tooth (41).

6. The portable carp joint pliers according to claim 1, characterized in that: The unlocking member (5) includes a positioning block (42) on the side of the hinge shaft (3) away from the pressing member, on which an arc-shaped adjustment groove (45) is provided. The second pliers body (2) is provided with a shifting rod (52), and the shifting rod (52) is inserted into the arc-shaped adjustment groove (45). After the shifting rod (52) moves to the end in the arc-shaped adjustment groove (45), it can shift the positioning block (42) to rotate so that the ratchet (43) disengages from the helical teeth (41).

7. The portable carp-joint pliers according to claim 1, characterized in that: The ratio K between the distance a between the center axis of the shift lever (52) 52 and the center axis of the hinge shaft (3) and the farthest horizontal distance b between the pawl (43) and the center axis of the hinge shaft (3) is (1 / 3-2 / 3).

8. The portable carp joint pliers according to claim 1, characterized in that: A spring piece (6) is provided at the tail of the second pliers body (2), and the spring piece (6) abuts against the first pliers body (1).

9. The portable carp joint pliers according to claim 1, characterized in that: A transversely penetrating mounting groove is provided in the second clamp body (2), and the spring piece (6) is fixed in the mounting groove.

10. The portable carp joint pliers according to claim 1, characterized in that: The second pliers body (2) comprises a pliers head (21) and a pliers body (22); a slide rail (12) arranged along the length direction of the slide groove (11) is provided on the first pliers body (1); the pliers head (21) is slidably arranged on the slide rail (12); the hinge shaft (3) is arranged on the pliers body (22); a toggle groove is provided on the pliers head (21); a toggle block (23) placed in the toggle groove is provided on the pliers body (22); the toggle block (23) is used to drive the pliers head (21) to move along the slide rail (12).

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