Locking plier latch clutch mechanism

Abstract

The utility model relates to the technical field of locking pliers, in particular to a locking plier latch clutch mechanism which comprises a plier body, two handles of the plier body are provided with a first groove and a second groove respectively, a connecting base is installed in the first groove in a hinged mode, a screw rod is fixed to the connecting base, the screw rod is clamped into the second groove when being transversely placed, and the locking plier latch clutch mechanism is arranged on the connecting base. The screw rod is sleeved with an internal thread ring base, meanwhile, a protective cylinder is fixed to the rear end of the internal thread ring base, a butt joint assembly is arranged on the connecting base, and when the screw rod is vertically placed and is located on the same straight line with a handle provided with a first groove, the butt joint assembly is in butt joint with the protective cylinder. The butt joint assembly is clamped into the clamping groove formed in the inner wall of the first groove to achieve integrated combination of the screw and the assembly handle, the operable length of the assembly handle is prolonged, and the clamping clutch mechanism is multipurpose.

Description

Technical Field

[0001] The utility model relates to the technical field of locking pliers, in particular to a locking gear clutch mechanism of locking pliers. Background Art

[0002] The gripping force of ordinary gripping pliers is controlled by the gripping force of the hand. In order to increase the biting force, a gear clutch mechanism is added to achieve rapid adjustment and control of the clamping force.

[0003] As disclosed in the publication (announcement) number CN221390635U, a kind of locking pliers utilizes the lever principle formed between a support rod and a rotating shaft and drives the rotating shaft to rotate on the inner side of a threaded sleeve through the support rod, so that the external thread and the threaded sleeve are gradually tightened. Although the force can be adjusted in the above scheme, the clutch mechanism structure has certain inconveniences on normal use, and the protruding structure is easy to collide with the hand. Utility Model Content

[0004] The utility model aims to at least solve the problem of poor convenience of the latching clutch mechanism in the prior art.

[0005] The present invention provides a locking mechanism of locking pliers, which is achieved by the following specific technical means: comprising a pliers body, wherein two handles of the pliers body are respectively provided with a groove one and a groove two, a connecting seat is hingedly installed in the groove one, a screw is fixed on the connecting seat, and the screw is inserted into the groove two when placed horizontally, an internal threaded ring seat is sleeved on the screw, and a protective tube is fixed to the rear end of the internal threaded ring seat, and the internal threaded ring seat and the connecting seat are respectively located on both sides of the groove two when the screw is placed horizontally; a docking assembly is provided on the connecting seat, and when the screw is placed vertically and is in the same straight line with the handle provided with the groove one, the docking assembly is inserted into the slot provided on the inner wall of the groove one to realize the integrated combination of the screw and the group of handles, and at the same time, extended handle rods are fixed on the upper and lower outer walls of the groove two on the other group of handles, which are used to cooperate with the screw in the vertical state to realize the change of the short handle into the long handle.

[0006] Preferred technical solution one: the screw rod is provided with a long hole along its length direction, and the docking assembly includes a clamping protrusion that slides through the connecting seat. After the internal threaded ring seat is twisted and the clamping protrusion is pushed, the front end extends from the connecting seat and is clamped into the slot to fix the position of the connecting seat.

[0007] Preferred technical solution two: convex plates are fixed on both sides of the rear end of the clamping protrusion, and a spring is connected between the convex plate and the connecting seat. When the internal thread ring seat is away from the connecting seat, the clamping protrusion is pulled out of the clamping groove due to the rebound of the spring.

[0008] Optimal technical solution three: a notch is provided on the wall of the protective tube, and a movable handle is hingedly installed in the notch.

[0009] Preferred technical solution four: the height of the groove 2 is smaller than the diameter of the internal thread ring seat.

[0010] Optimal technical solution five: the distance between the upper and lower groups of extended handle rods is greater than the diameter of the internal thread ring seat and the protective tube.

[0011] The above structure enables this solution to have the following beneficial effects:

[0012] 1. The integrated multi-purpose card clutch mechanism is realized. When strong clamping is required, there are two modes to choose from: one is to place the short handle of the screw vertically and change it into a long handle to extend the operating length; the other is to place the screw horizontally. By twisting the protective tube, the internal thread ring seat is driven to rotate and press against the handle, and the two sets of handles are controlled to approach each other, so as to achieve rapid adjustment and precise control of the clamping force;

[0013] 2. The setting of the movable handle can further increase the convenience of adjusting the clamping force;

[0014] 3. The long hole on the screw can also be inserted into other rods or plates, and fixed through the cooperation of the inner block and the connecting seat to fix the pliers body for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this scheme;

[0017] Figure 2 This is the exploded diagram of this scheme;

[0018] Figure 3 This is a cross-sectional view of this scheme;

[0019] Figure 4 This is the long handle state diagram of this solution;

[0020] Figure 5 This is the fixed state diagram for this solution.

[0021] Among them, 1. pliers body, 11. groove one, 12. groove two, 13. slot, 2. connecting seat, 3. screw, 31. long hole, 4. internal thread ring seat, 5. protective tube, 51. notch, 6. movable handle, 7. docking assembly, 71. snap-on protrusion, 72. convex plate, 73. spring, 8. extension handle rod, 9. inner block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 4 The locking pliers has a tooth clutch mechanism, comprising a pliers body 1, two handles of the pliers body 1 are respectively provided with a groove 11 and a groove 2 12, a connecting seat 2 is hingedly installed in the groove 11, a screw 3 is fixed on the connecting seat 2, the screw 3 is inserted into the groove 2 12 when it is placed horizontally, an internal thread ring seat 4 is sleeved on the screw 3, and a protective tube 5 is fixed at the rear end of the internal thread ring seat 4, the height of the groove 2 12 is less than the diameter of the internal thread ring seat 4, when the screw 3 is placed horizontally, the internal thread ring seat 4 and the connecting seat 2 are respectively located on both sides of the groove 2 12, at this time, the protective tube 5 is twisted to drive the internal thread ring seat 4 to move and press against the right outer wall of the groove 2 12, so that the clamping force can be quickly adjusted and accurately controlled;

[0024] A docking assembly 7 is provided on the connecting seat 2. When the screw rod 3 is placed vertically and the handle with the groove 11 is in the same straight line, the screw rod 3 and the handle are integrated by the docking assembly 7 being inserted into the groove 13 provided on the inner wall of the groove 11, thereby extending the operable length of the handle. At the same time, extended handle rods 8 are fixed on the upper and lower outer walls of the groove 12 on the other handle group, which are used to cooperate with the screw rod 3 in the vertical state to realize the change of the short handle into the long handle, and the distance between the upper and lower extended handle rods 8 is greater than the diameter of the internal threaded ring seat 4 and the protective tube 5, so that the internal threaded ring seat 4 and the protective tube 5 can pass through between the two extended handle rods 8.

[0025] See also Figure 1-Figure 3 When the internal threaded ring seat 4 is away from the connecting seat 2, the clamping protrusion 71 is pulled out of the clamping groove 13 by the rebound of the spring 73, and the inner cavity of the internal threaded ring seat 4 is rotatably connected with the inner block 9. When the internal threaded ring seat 4 is close to the connecting seat 2, the inner block 9 first contacts with the clamping protrusion 71, and pushes the clamping protrusion 71 to clamp into the clamping groove 13.

[0026] See also Figure 1-Figure 5, the locking pliers have a tooth clutch mechanism, a notch 51 is provided on the wall of the protective tube 5, and a movable handle 6 is hingedly installed in the notch 51. When it is necessary to rotate the internal thread ring seat 4, the movable handle 6 is rotated out of the notch 51 for operation, and after the operation is completed, the movable handle 6 is pressed back into the notch 51 and retracted again.

[0027] See also Figure 1-Figure 3 , the locking pliers gear clutch mechanism, the inner block 9 is slidably connected with the long hole 31, and the inner block 9 is used to support the long hole 31 to avoid deformation after a long time, thereby affecting the meshing of the internal thread ring seat 4 and the screw 3, and the convex edge fixed on the rear end side of the inner block 9 is rotatably connected with the rear end wall of the internal thread ring seat 4;

[0028] When the screw rod 3 is placed horizontally away from the handle to the other side, the end face of the connecting seat 2 and the side wall of the handle are in the same plane. At this time, the long hole 31 on the screw rod 3 can be inserted into other rod bodies or plate bodies, and the protective tube 5 is turned to push the inner block 9 to move and cooperate with the connecting seat 2 to clamp the rod body or plate body for fixing. At this time, the pliers body 1 can be used in a fixed state, such as Figure 5 .

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A locking mechanism for locking pliers, comprising a pliers body (1), characterized in that: The two handles of the pliers body (1) are respectively provided with a groove one (11) and a groove two (12); a connecting seat (2) is hingedly installed in the groove one (11); a screw rod (3) is fixed on the connecting seat (2); the screw rod (3) is inserted into the groove two (12) when it is placed horizontally; an internal threaded ring seat (4) is sleeved on the screw rod (3); and a protective tube (5) is fixed to the rear end of the internal threaded ring seat (4); a docking assembly (7) is provided on the connecting seat (2); when the screw rod (3) is placed vertically and is in the same straight line with the handle provided with the groove one (11), the docking assembly (7) is inserted into a slot (13) provided on the inner wall of the groove one (11); and an extended handle rod (8) is fixed on the upper and lower outer walls of the groove two (12) on the other handle.

2. A locking pliers gear clutch mechanism according to claim 1, characterized in that: The screw rod (3) is provided with a long hole (31) along its length direction, and the docking assembly (7) comprises a clamping protrusion (71) which is slidably penetrated through the connecting seat (2), and one end of the clamping protrusion (71) passes through the connecting seat (2) and penetrates into the long hole (31).

3. A locking pliers gear clutch mechanism according to claim 2, characterized in that: Convex plates (72) are fixed on both sides of the rear end of the clamping protrusion (71), and a spring (73) is connected between the concave plate (72) and the connecting seat (2).

4. A locking pliers gear clutch mechanism according to claim 3, characterized in that: The inner cavity of the internal threaded ring seat (4) is rotatably connected to an inner block (9), and when the internal threaded ring seat (4) approaches the connecting seat (2), the inner block (9) first contacts the clamping protrusion (71).

5. The locking pliers gear clutch mechanism according to claim 1, characterized in that: A notch (51) is provided on the wall of the protective tube (5), and a movable handle (6) is hingedly installed in the notch (51).

6. The locking pliers gear clutch mechanism according to claim 1, characterized in that: The height of the second groove (12) is smaller than the diameter of the internal thread ring seat (4).

7. The locking pliers gear clutch mechanism according to claim 1, characterized in that: At the same time, the distance between the upper and lower groups of extended handle rods (8) is greater than the diameters of the internal thread ring seat (4) and the protective tube (5).

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