Clamp

Abstract

The utility model relates to the technical field of manual tools, and discloses a clamp, which comprises a clamp seat and a clamp body, the clamp claws are arranged in pairs, and the clamp claws arranged in pairs are rotationally assembled on the clamp seat; the connecting rod is fixedly assembled with the clamp seat, and the connecting rod is provided with a hollow inner cavity; the telescopic part is hinged to the gripper arm, an elastic part is assembled between the telescopic part and the connecting rod, the elastic part is used for applying elastic force towards the gripper arm to the telescopic part, and the telescopic part is used for driving the gripper arm to clamp or loosen in the moving stroke; the inhaul cable is arranged in the inner cavity; the handle is movably assembled at the end, away from the telescopic part, of the connecting rod, the inhaul cable is connected between the telescopic part and the handle, and the handle has a tensioning state in which the inhaul cable is tensioned to drive the gripper arms to be clamped and a loosening state in which the inhaul cable is released to loosen the gripper arms in the moving stroke. Due to the fact that the connecting rod is of a hollow structure, the weight of the connecting rod can be effectively reduced when the length of the connecting rod is increased, the overall weight of the clamp is further reduced, and operators can hold the clamp conveniently for a long time in a labor-saving mode.

Description

Technical Field

[0001] The utility model relates to the technical field of hand tools, in particular to a clamp. Background Art

[0002] Clamps are common tools in our daily lives. However, for specialized applications, such as picking up items from under manhole covers or clamping dangerous or explosive items, we need clamps with strong clamping force and long rods to effectively pick up items. Existing long-rod clamps are bulky and heavy, making them unsuitable for many situations. Utility Model Content

[0003] The purpose of the utility model is to provide a clamp to solve the problem that the clamp in the prior art is large in size and bulky as a whole.

[0004] In order to achieve the above object, the utility model provides a clamp, comprising:

[0005] Clamp seat;

[0006] Clamp claws, the clamp claws are arranged in pairs, and the clamp claws arranged in pairs are rotatably assembled on the clamp base;

[0007] A connecting rod, the connecting rod being fixedly assembled with the clamp seat, the connecting rod having a hollow inner cavity;

[0008] a telescopic member, the telescopic member being hinged to the jaw, the telescopic member being movably assembled in the inner cavity, an elastic member being assembled between the telescopic member and the connecting rod, the elastic member being used to apply an elastic force toward the jaw on the telescopic member, and the telescopic member being used to drive the jaw to clamp or release during its movable stroke;

[0009] a cable, the cable being arranged in the inner cavity;

[0010] A handle is movably assembled at one end of the connecting rod away from the telescopic member, the cable is connected between the telescopic member and the handle, and the handle has a tightened state in which the cable is tightened to drive the clamp jaws to clamp, and a loosened state in which the cable is released to loosen the clamp jaws during its movable stroke.

[0011] Preferably, the connecting rod has a threaded hole, the handle has a screw segment that matches the threaded hole, the handle is threadedly assembled with the connecting rod, and the cable is connected to the end of the screw segment.

[0012] Preferably, the handle further comprises a gripping rod segment, the gripping rod segment and the screw rod segment are integrally formed, and a friction structure is provided on the gripping rod segment.

[0013] Preferably, the friction structure is a mesh pattern, and the mesh pattern is roll-formed on the outer wall of the grip section.

[0014] Preferably, the connecting rod includes an integrally formed first connecting section, a second connecting section and a transition section, the transition section is obliquely connected between the first connecting section and the second connecting section, the clamp seat and the telescopic member are both assembled on the first connecting section, and the handle is assembled on the second connecting section.

[0015] Preferably, the telescopic member includes a telescopic shaft and a connecting plate, the telescopic shaft is assembled with the inner cavity guide, the connecting plate is hinged with the clamp claw, the cable is connected to the telescopic shaft, and the elastic member is assembled between the telescopic shaft and the first connecting section.

[0016] Preferably, the elastic member is a return spring, the telescopic shaft further has a shaft shoulder, one end of the return spring is press-fitted to the shaft shoulder, and the other end is press-fitted to the end of the first connecting section.

[0017] Preferably, the clamp claw comprises a clamp claw and a transmission rod, the clamp claw is rotationally assembled with the clamp seat, one end of the transmission rod is hinged to the clamp claw, and the other end is hinged to the telescopic member.

[0018] Preferably, the clamping claw has a first guide hole, and the clamp seat has a second guide hole. The first guide hole and the second guide hole are both long holes, and the extension directions of the first guide hole and the second guide hole form an angle.

[0019] Preferably, the first guide hole extends along the length direction of the clamping claw, and the second guide hole extends along the clamping direction of the clamping claw.

[0020] Compared with the prior art, the clamps in the embodiment of the present invention have the following beneficial effects: the connecting rod of the clamps has a hollow inner cavity, the cable is arranged in the inner cavity of the connecting rod, and the handle drives the telescopic part to move through the cable, thereby driving the clamp claws to clamp or loosen. Since the connecting rod is a hollow structure, the weight of the connecting rod can be effectively reduced when the length of the connecting rod is increased, thereby reducing the overall weight of the clamps, making it convenient for the operator to hold the clamps for a long time and saving effort. In addition, the clamps have a simple structure, low manufacturing cost, and small size, making them suitable for work scenarios with long clamping distances and small spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the clamp of the present utility model;

[0022] Figure 2 yes Figure 1 A schematic diagram of the structure of the clamp from another perspective after omitting the clamp base and clamp claws.

[0023] In the figure, 1. Clamp seat, 11. Second guide hole, 2. Clamp claw, 21. Clamping claw, 22. Transmission rod, 23. First guide hole, 3. Connecting rod, 31. Inner cavity, 32. Threaded hole, 33. First connecting section, 34. Second connecting section, 35. Transition section, 4. Telescopic part, 41. Telescopic shaft, 42. Connecting plate, 43. Shoulder, 5. Cable, 6. Handle, 61. Screw section, 62. Grip section, 63. Friction structure, 7. Return spring. DETAILED DESCRIPTION

[0024] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] A preferred embodiment of the clamp of the present invention is as follows: Figure 1 and Figure 2 As shown, the pliers include a pliers base 1, pliers jaws 2, a connecting rod 3, a telescopic member 4, a pull rope 5 and a handle 6. The pliers base 1 is the main structure of the pliers, and the pliers jaws 2 are arranged on the pliers base 1. The pliers jaws 2 can be clamped or loosened to clamp objects; the connecting rod 3 is connected to the pliers base 1 to increase the length of the pliers; the telescopic member 4, the pull rope 5 and the handle 6 cooperate with each other to drive the pliers jaws 2 to clamp or loosen.

[0026] The jaws 2 are arranged in pairs, and the two jaws 2 arranged in pairs are both rotatably assembled on the clamp base 1. The two jaws 2 can clamp or loosen when rotating. In this embodiment, the specific structure of the jaws 2 can be the same as that of the prior art and will not be described in detail here.

[0027] The connecting rod 3 is fixedly assembled with the clamp base 1 and is located at the end of the clamp base 1 away from the clamp jaw 2. The connecting rod 3 is used to increase the overall length of the clamp jaw. The connecting rod 3 has a hollow inner cavity 31. In this embodiment, the connecting rod 3 is a circular tube structure, and the inner cavity 31 of the connecting rod 3 is circular.

[0028] The telescopic member 4 is movably assembled in the inner cavity 31 of the connecting rod 3. The telescopic member 4 is hinged to the jaw 2, and an elastic member is installed between the telescopic member 4 and the connecting rod 3. The elastic member is used to apply an elastic force to the telescopic member 4 toward the jaw 2 to disengage the telescopic member 4 from the inner cavity 31. The telescopic member 4 is used to drive the jaw 2 to clamp or release during its movable stroke. When the telescopic member 4 moves into the inner cavity 31, the telescopic member 4 drives the jaw 2 to clamp. When the telescopic member 4 disengages from the inner cavity 31 under the action of the elastic member, the telescopic member 4 drives the jaw 2 to release.

[0029] A handle 6 is movably mounted on the end of the connecting rod 3 away from the telescopic member 4. A cable 5 is connected between the telescopic member 4 and the handle 6. The cable 5 is located within the inner cavity 31, which provides space for the cable 5. The cable 5 occupies a small space and is lightweight. In this embodiment, the cable 5 is a steel wire rope. The handle 6 is movable to pull the telescopic member 4 toward the inner cavity 31 via the cable 5, thereby driving the jaws 2 to clamp. The handle 6 cooperates with the elastic member to achieve clamping or release of the jaws 2.

[0030] The handle 6 has a tensioned state and a loosened state during its active stroke. When the handle 6 is in the tensioned state, the handle 6 tightens the rope to move the telescopic part 4 toward the inner cavity 31, and the telescopic part 4 drives the jaws 2 to clamp; when the handle 6 is in the loosened state, the handle 6 releases the extension, and the elastic part drives the telescopic part 4 to disengage from the inner cavity 31 through elastic force, and the telescopic part 4 drives the jaws 2 to loosen.

[0031] The connecting rod 3 of the clamp has a hollow inner cavity 31, and the cable 5 is arranged in the inner cavity 31 of the connecting rod 3. The handle 6 drives the telescopic part 4 to move through the cable 5, and then drives the clamp claw 2 to clamp or loosen. Since the connecting rod 3 is a hollow structure, the weight of the connecting rod 3 can be effectively reduced when the length of the connecting rod 3 is increased, thereby reducing the overall weight of the clamp, making it convenient for the operator to hold it for a long time and saving effort. In addition, its structure is simple, the production cost is low, and the size is small, making it suitable for work scenarios with a long clamping distance and a small space.

[0032] Preferably, the connecting rod 3 has a threaded hole 32 , the handle 6 has a screw segment 61 that matches the threaded hole 32 , the handle 6 is threadedly assembled with the connecting rod 3 , and the cable 5 is connected to the end of the screw segment 61 .

[0033] A screw segment 61 is provided on the handle 6, and a threaded hole 32 is provided on the connecting rod 3. The handle 6 and the connecting rod 3 are threadedly assembled. When the handle 6 is moved, it rotates within the inner cavity 31, tightening the cable 5 through the threaded structure. The threaded structure has a strong clamping force and is stable and not easy to loosen. The clamping force is borne by the threaded structure. The operator only needs to rotate the handle 6, which is convenient for holding for long periods of time and saves effort. In addition, each rotation of the handle 6 moves a distance of one thread pitch, which facilitates the control of the clamping force.

[0034] Preferably, the handle 6 further includes a grip section 62 , which is integrally formed with the screw section 61 , and a friction structure 63 is provided on the grip section 62 .

[0035] The grip section 62 and the screw section 61 are integrally formed to increase the strength of the handle 6. The friction structure 63 on the grip section 62 increases the friction between the palm and the handle 6, making it easier for the operator to screw the handle 6.

[0036] Preferably, the friction structure 63 is a mesh pattern, and the mesh pattern is roll-formed on the outer wall of the grip section 62 .

[0037] The friction structure 63 is a mesh pattern and can be directly formed on the outer wall of the grip section 62 by rolling, which is simple to process and low in cost.

[0038] Preferably, the connecting rod 3 includes an integrally formed first connecting section 33, a second connecting section 34 and a transition section 35, the transition section 35 is obliquely connected between the first connecting section 33 and the second connecting section 34, the clamp seat 1 and the telescopic member 4 are both assembled on the first connecting section 33, and the handle 6 is assembled on the second connecting section 34.

[0039] The connecting rod 3 is formed by a first connecting section 33, a second connecting section 34 and a transition section 35. The transition section 35 is obliquely connected between the first connecting section 33 and the second connecting section 34. The connecting rod 3 as a whole is a special-shaped structure and can be used in special environments, which increases the use scenarios of the clamp.

[0040] Preferably, the telescopic member 4 includes a telescopic shaft 41 and a connecting plate 42, the telescopic shaft 41 is guided and assembled with the inner cavity 31, the connecting plate 42 is hinged with the clamp claw 2, the cable 5 is connected to the telescopic shaft 41, and the elastic member is assembled between the telescopic shaft 41 and the first connecting section 33.

[0041] The telescopic member 4 is formed by a telescopic shaft 41 and a connecting plate 42. The telescopic shaft 41 is assembled with the inner cavity 31 to ensure that the telescopic member 4 is stable when moving, so that the telescopic member 4 drives the jaws 2 to move and maintain the clamping force.

[0042] Preferably, the elastic member is a return spring 7 , and the telescopic shaft 41 further has a shaft shoulder 43 . One end of the return spring 7 is press-fitted to the shaft shoulder 43 , and the other end is press-fitted to the end of the first connecting section 33 .

[0043] The reset member adopts a reset spring 7, which simplifies the structure and assembly form of the elastic member, and has a simple structure and low cost.

[0044] Preferably, the clamp jaw 2 includes a clamp claw 21 and a transmission rod 22 . The clamp claw 21 is rotatably assembled with the clamp base 1 . One end of the transmission rod 22 is hinged to the clamp claw 21 , and the other end is hinged to the telescopic member 4 .

[0045] The clamp jaw 2 is formed by a clamping claw 21 and a transmission rod 22. The clamping claw 21, the transmission rod 22 and the telescopic member 4 form a crank slider structure to ensure that the clamp jaw 2 moves stably.

[0046] Preferably, the claw 21 has a first guide hole 23 , and the clamp seat 1 has a second guide hole 11 . The first guide hole 23 and the second guide hole 11 are both long holes, and the extending directions of the first guide hole 23 and the second guide hole 11 form an angle.

[0047] A first guide hole 23 and a second guide hole 11 are respectively provided on the clamping jaw 21 and the clamp seat 1. The angle between the two guide holes can prevent the clamping jaw 2 from interfering with the clamp seat 1 when clamping or releasing. At the same time, the first guide hole 23 and the second guide hole 11 can also limit the moving direction of the clamping jaw 2 to ensure that the two paired clamping jaws 2 are clamped.

[0048] Preferably, the first guide hole 23 extends along the length direction of the claw 21 , and the second guide hole 11 extends along the clamping direction of the claw 21 .

[0049] The first guide hole 23 extends along the length direction of the clamping jaw 21 to avoid reducing the structural strength of the clamping jaw 21 due to the opening of the hole. The second guide hole 11 extends along the clamping direction of the clamping jaw 21 to limit the clamping of the clamping jaw 21.

[0050] In summary, the embodiment of the utility model provides a clamp, the connecting rod of the clamp has a hollow inner cavity, the cable is arranged in the inner cavity of the connecting rod, and the handle drives the telescopic part to move through the cable, thereby driving the clamp claws to clamp or loosen. Since the connecting rod is a hollow structure, the weight of the connecting rod can be effectively reduced when the length of the connecting rod is increased, thereby reducing the overall weight of the clamp, making it convenient for the operator to hold it for a long time and saving effort. In addition, its structure is simple, the production cost is low, and the size is small, making it suitable for work scenarios with long clamping distances and small spaces.

[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A clamp, characterized in that: include: Clamp seat (1); Clamp claws (2), the clamp claws (2) are arranged in pairs, and the clamp claws (2) arranged in pairs are both rotatably assembled on the clamp seat (1); A connecting rod (3), the connecting rod (3) being fixedly assembled with the clamp seat (1), the connecting rod (3) having a hollow inner cavity (31); a telescopic member (4), the telescopic member (4) being hinged to the clamp claw (2), the telescopic member (4) being movably mounted in the inner cavity (31), an elastic member being mounted between the telescopic member (4) and the connecting rod (3), the elastic member being used to apply an elastic force to the telescopic member (4) toward the clamp claw (2), and the telescopic member (4) being used to drive the clamp claw (2) to clamp or release during its movable stroke; A cable (5), wherein the cable (5) is arranged in the inner cavity (31); A handle (6) is movably mounted on an end of the connecting rod (3) away from the telescopic member (4); the cable (5) is connected between the telescopic member (4) and the handle (6); and the handle (6) has a tensioned state in which the cable (5) is tightened to drive the clamp jaws (2) to clamp, and a loosened state in which the cable (5) is released to loosen the clamp jaws (2) during its movable stroke.

2. The clamp according to claim 1, characterized in that The connecting rod (3) has a threaded hole (32), the handle (6) has a screw segment (61) that matches the threaded hole (32), the handle (6) is threadedly assembled with the connecting rod (3), and the cable (5) is connected to the end of the screw segment (61).

3. The clamp according to claim 2, characterized in that The handle (6) further comprises a gripping rod section (62), the gripping rod section (62) and the screw rod section (61) are integrally formed, and a friction structure (63) is provided on the gripping rod section (62).

4. The clamp according to claim 3, characterized in that The friction structure (63) is a mesh pattern, and the mesh pattern is roller-formed on the outer wall of the grip section (62).

5. The clamp according to any one of claims 1 to 4, characterized in that: The connecting rod (3) comprises a first connecting section (33), a second connecting section (34) and a transition section (35) which are integrally formed; the transition section (35) is obliquely connected between the first connecting section (33) and the second connecting section (34); the clamp seat (1) and the telescopic member (4) are both assembled on the first connecting section (33); and the handle (6) is assembled on the second connecting section (34).

6. The clamp according to claim 5, characterized in that The telescopic member (4) comprises a telescopic shaft (41) and a connecting plate (42); the telescopic shaft (41) is assembled with the inner cavity (31) guide, the connecting plate (42) is hinged with the clamp claw (2), the cable (5) is connected with the telescopic shaft (41), and the elastic member is assembled between the telescopic shaft (41) and the first connecting section (33).

7. The clamp according to claim 6, characterized in that The elastic member is a return spring (7), the telescopic shaft (41) further comprises a shaft shoulder (43), one end of the return spring (7) is press-fitted to the shaft shoulder (43), and the other end is press-fitted to the end of the first connecting section (33).

8. The clamp according to any one of claims 1 to 4, characterized in that: The clamp claw (2) comprises a clamp claw (21) and a transmission rod (22); the clamp claw (21) is rotatably assembled with the clamp seat (1); one end of the transmission rod (22) is hinged to the clamp claw (21) and the other end is hinged to the telescopic member (4).

9. The clamp according to claim 8, characterized in that The clamping claw (21) has a first guide hole (23), and the clamp seat (1) has a second guide hole (11). The first guide hole (23) and the second guide hole (11) are both long holes, and the extension directions of the first guide hole (23) and the second guide hole (11) form an angle.

10. The clamp according to claim 9, characterized in that The first guide hole (23) extends along the length direction of the clamping claw (21), and the second guide hole (11) extends along the clamping direction of the clamping claw (21).

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