Self-locking wire cutters

Abstract

The utility model belongs to the technical field of wire cutters, and particularly relates to a self-locking wire cutter. A self-locking wire cutter comprises two clamping ends, a connection part one and a connection part two, and a clamp handle, wherein a connection part through slot is provided on the connection part one, a rotating plate is fixedly connected to the inner end face of the connection part two opposite to the connection part one, a plurality of tooth slots are provided on the rotating plate, and the rotating plate can be rotated and penetrated in the connection part through slot with a pin as an axis; a limit plate can be slidably inserted on the connection part one at the connection part through slot, a limit block is fixedly connected to the end face of the limit plate opposite to the rotating plate, and a plurality of limit teeth are provided on the limit block; when the limit teeth are inserted in the tooth slots, the connection part two cannot rotate; when the limit teeth are out of the tooth slots, the connection part two can rotate relative to the connection part one. The utility model has a simple structure, is easy to operate, and can self-lock when clamping objects to reduce the hand force of the operator.

Description

Technical Field

[0001] The utility model belongs to the technical field of wire cutters, in particular to a self-locking wire cutter. Background Art

[0002] Wire cutters are commonly used tools for mechanical assembly and maintenance. During use, the pliers' heads are generally used to clamp and secure workpieces, or to twist, bend, or cut wires. Existing wire cutters, such as Chinese Utility Model Patent Application No. 201610999807.X, disclose a multifunctional wire cutter comprising two hinged handles and a clamping end disposed at one end of each handle. By holding the handles and bringing them close together, the clamping ends can clamp and secure an object.

[0003] However, the above-mentioned existing wire cutters have the following technical problems: when using the wire cutters to clamp, fix or twist an object, the operator needs to continuously exert force on the clamp handle with his hand to enable the clamping end to clamp, fix or twist the object. Especially when using the wire cutters to remove nuts, tighten or twist wires, etc., which require holding the wire cutters for a long time, the operator's labor intensity is high and his hands are easily fatigued, resulting in low work efficiency.

[0004] Based on this, there is an urgent need to design a self-locking wire cutter that can self-lock after clamping an object, so that when clamping an object at the clamping end, the hand force is reduced or even eliminated, thereby saving the operator's effort and improving work efficiency. Utility Model Content

[0005] In order to solve the technical problems existing in the prior art, the present application provides a self-locking wire cutter which has a simple structure, is easy to operate and can self-lock when clamping objects.

[0006] The cam is fixedly provided with a tooth groove, and the cam is provided with a plurality of tooth grooves, and the cam is fixedly provided with a plurality of tooth grooves. The cam is fixedly ...

[0007] Preferably, a limiting protrusion is fixedly connected to the limiting plate on one side of the limiting block, and when the limiting plate is pushed to make the limiting protrusion abut against the groove wall of the connecting portion through groove, the limiting tooth is inserted into the tooth groove.

[0008] Preferably, the connecting part 1 includes a connecting part body and a cover plate, the connecting part through slot is provided on the connecting part body, the cover plate is detachably covered on the connecting part body at the connecting part through slot, and the limiting plate is slidably inserted on the cover plate.

[0009] Preferably, the cover plate is fixedly connected to the connecting part body by bolts.

[0010] Preferably, one side end face of the rotating plate away from the tooth groove is an arc-shaped concave structure, and the groove wall of the rotating part groove opposite to the concave structure of the rotating plate is an arc-shaped convex structure. When the rotating plate rotates, its concave structure abuts against the convex structure of the rotating part groove.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The present invention realizes the self-locking function of the wire cutters by providing a rotating plate that rotates in the through groove of the connecting part and is fixedly connected to the second connecting part, a limiting plate that can be slidably inserted into the through groove of the connecting part, and a tooth groove is provided on the rotating plate, and a limiting tooth that can be inserted into the tooth groove is provided on the limiting block of the limiting plate. That is, when the limiting tooth is inserted into the tooth groove, the second connecting part cannot rotate; when the limiting tooth is disengaged from the tooth groove, the second connecting part can rotate relative to the first connecting part. Compared with the prior art, after the operator clamps an object with the clamping end, the operator can push the limiting plate to insert the limiting tooth into the tooth groove. At this time, the operator no longer needs to hold the clamp handle tightly to keep the clamping end clamped, thereby saving the operator's effort and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] Figure 2 This is a schematic diagram of the connection structure of the clamping end, the second connecting part, the clamp handle and the rotating plate of the utility model.

[0015] Figure 3 This is a schematic diagram of the connection structure of the clamping end, the first connecting part, the clamp handle and the limiting plate of the utility model.

[0016] Figure 4 This is a schematic diagram of the partial connection structure of the connecting part 1, the rotating plate and the limiting plate of the present invention.

[0017] In the figure: 1. pin shaft, 2. clamping end, 3. connecting part 1, 31. connecting part through groove, 32. connecting part body, 321. mounting opening, 33. cover plate, 331. bolt, 4. connecting part 2, 5. clamp handle, 6. rotating plate, 61. tooth groove, 7. limiting plate, 71. limiting block, 72. limiting tooth, 73. limiting protrusion. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings of 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 them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. Example

[0020] See attached Figure 1 、 2 As shown in Figures 3 and 4, a self-locking wire cutter comprises two clamping ends 2 hingedly connected to each other by a pin 1. The two clamping ends 2 can rotate relative to each other to clamp an object. The specific structure can be selected from existing technologies and will not be described in detail here. A connecting portion 1 3 and a connecting portion 2 4 are formed integrally with one end of each clamping end 2 and are oppositely provided. A clamp handle 5 is formed integrally with the connecting portion 1 3 and the connecting portion 2 4. Therefore, when the operator grasps the clamp handle 5, the connecting portion 1 3 and the connecting portion 2 4 can move toward each other, thereby achieving the two clamping ends 2 to move toward each other, thereby achieving the clamping function of the wire cutter.

[0021] See also Figure 2 As shown, a rotating plate 6 is fixedly connected to the inner end face of the connecting portion 2 4 opposite to the connecting portion 1 3 by welding or integral molding, and a plurality of tooth grooves 61 are provided on the end face of the rotating plate 6 on the side away from the clamping end 2. Since the connecting portion 2 4 can rotate around the pin 1, in this embodiment, the rotating plate 6 is designed to be an arc-shaped structure with the pin 1 as the axis, that is, the end face of the rotating plate on one side away from the tooth groove 61 is an arc-shaped concave structure, and the plurality of tooth grooves 61 are evenly distributed along the length direction of the rotating plate 6.

[0022] See also Figure 3、 4 As shown, a connecting portion through slot 31 is provided on the connecting portion 1 3 toward the connecting portion 2 4 , and the rotating plate 6 can be rotatably arranged in the connecting portion through slot 31 with the pin shaft 1 as an axis.

[0023] Specifically, the connecting portion through-slot 31 is opened along its width and has an open structure at both ends. Furthermore, in this embodiment, to facilitate the installation of the connecting portion 2 4 and the installation of the rotating plate 6 in the connecting portion through-slot 31, the connecting portion 1 3 includes a connecting portion body 32 and a cover plate 33 that are integrally formed and fixedly connected to one end of the corresponding clamping end 2. The connecting portion through-slot 31 is opened on the connecting portion body 32 along the length and width of the connecting portion body 32 and penetrates one end surface of the connecting portion body 32 to form an installation opening 321. The cover plate 33 is removably mounted on the connecting portion body 32 at the installation opening 321. Furthermore, to facilitate the removal and installation of the cover plate 33, the cover plate 33 is fixedly mounted on the connecting portion body 32 by bolts 331.

[0024] Furthermore, in this embodiment, to guide the rotating plate 6 as it rotates within the connecting portion slot 31, the slot wall of the rotating portion slot 31, which faces the concave surface of the rotating plate 6, is provided with a matching arc-shaped convex surface. When the rotating plate 6 rotates, the concave surface abuts against the convex surface of the rotating portion slot 31. This improves the connection strength between the rotating plate 6 and the connecting portion 1 3, and between the rotating plate 6 and the stopper plate 7 described below.

[0025] Sliding holes are provided on both the cover plate 33 and the wall of the connecting portion through-slot 31 opposite the cover plate 33. The limiting plate 7 can slide through the sliding holes perpendicular to the cover plate 33. A limiting block 71 is integrally formed and fixedly connected to the end surface of the limiting plate 7 opposite the rotating plate 6. The limiting block 71 is provided with a plurality of limiting teeth 72. Each limiting tooth 72 can be inserted into a corresponding tooth groove 61 to limit the rotation of the rotating plate 6 and the connecting portion 2 4. Each limiting tooth 72 can also be disengaged from the corresponding tooth groove 61, thereby enabling the rotating plate 6 and the connecting portion 2 4 to rotate. As a result, the rotating plate 6 is disposed in the middle of the connecting portion through-slot 31, that is, a gap is left between the two side surfaces of the rotating plate 6 and the wall of the connecting portion through-slot 31 and the inner end surface of the cover plate 33. The size of the gap is larger than the limiting block 71, so that when the limiting teeth 72 disengage from the tooth groove 61, the limiting block 71 moves into the gap.

[0026] Therefore, through the above structure, the self-locking and unlocking of the wire cutters can be achieved by simply pushing the limiting plate 7 to insert the limiting teeth 72 into the tooth groove 61 or to disengage the limiting teeth 72 from the tooth groove 61.

[0027] Furthermore, in order to facilitate the rapid insertion of the limiting tooth 72 into the tooth groove 61 when pushing the limiting plate 7, a limiting protrusion 73 is integrally formed and fixedly connected on the limiting plate 7 on one side of the limiting block 71. In this embodiment, the limiting protrusion 73 is arranged on the side close to the cover plate 33. When the limiting plate 7 is pushed so that the limiting protrusion 73 abuts against the groove wall of the connecting portion through groove 31 (that is, the inner end face of the cover plate 33 in this embodiment), the limiting tooth 72 is inserted into the tooth groove 61.

[0028] The working process of the embodiment of the utility model is as follows:

[0029] Install the pliers according to the above instructions. When using the pliers, refer to Figure 1 As shown, pick up the wire pliers. When the two clamping ends 2 need to be moved away from each other to open, hold the pliers handle 5 and press the lower end of the limit plate 7 to push the limit plate 7 upward, so that the limit protrusion 73 is disengaged from the inner end surface of the cover plate 33 and the limit teeth 72 are disengaged from the tooth groove 61. At this time, the pliers handle 5 can drive the connecting part 1 3, the connecting part 2 4, the rotating plate 6 and the clamping ends 2 to rotate, so that the two clamping ends 2 are opened;

[0030] After the two clamping ends 2 clamp and fix the object, press the upper end of the limit plate 7 to move the limit plate 7 downward, or the limit plate 7 naturally falls due to gravity. At this time, the limit protrusion 73 can abut the inner end surface of the cover plate 33, and the limit tooth 72 is inserted into the corresponding tooth groove 61, thereby completing the self-locking of the wire cutter. At this time, due to the blocking effect of the limit plate 7, the rotating plate 6 and the connecting part 2 4 cannot rotate relative to the connecting part 1 3, thereby maintaining the distance between the two clamping ends 2. The operator can use the wire cutter to complete the clamping and fixing operations without applying or applying very little inward force to the clamp handle 5. It should be noted that in order to enable the limit tooth 72 to be quickly inserted into the tooth groove 61, a certain gap is set between the limit tooth 72 and the tooth groove 61. The size of the gap can be specifically determined according to the specific type of clamped object and the usage scenario of the wire cutter.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-locking wire pliers, comprising two clamping ends hinged to each other by a pin, a connecting portion 1 and a connecting portion 2 respectively arranged opposite to each other at one end of the two clamping ends, and a clamp handle respectively arranged on the connecting portion 1 and the connecting portion 2, characterized in that: A connecting portion through slot is provided on the connecting portion 1 toward the connecting portion 2, a rotating plate is fixedly connected to the inner end surface of the connecting portion 2 opposite to the connecting portion 1, a plurality of tooth slots are provided on the rotating plate, and the rotating plate can be rotated with the pin shaft as the axis and penetrated into the connecting portion through slot; A limiting plate is slidably inserted on the connection part 1 at the connection part through groove, and a limiting block is fixedly connected to the end surface of the limiting plate opposite to the rotating plate, and a plurality of limiting teeth are arranged on the limiting block; When the limiting tooth is inserted into the tooth groove, the second connecting part cannot rotate; when the limiting tooth is disengaged from the tooth groove, the second connecting part can rotate relative to the first connecting part.

2. A self-locking wire cutter according to claim 1, characterized in that: A limiting protrusion is fixedly connected to a limiting plate on one side of the limiting block. When the limiting plate is pushed to make the limiting protrusion abut against the groove wall of the connecting portion through groove, the limiting tooth is inserted into the tooth groove.

3. The self-locking wire cutter according to claim 1, characterized in that: The first connecting part comprises a connecting part body and a cover plate, the connecting part through slot is provided on the connecting part body, the cover plate is detachably covered on the connecting part body at the connecting part through slot, and the limiting plate is slidably inserted on the cover plate.

4. A self-locking wire pliers according to claim 3, characterized in that: The cover plate is fixedly connected to the connecting part body by bolts.

5. The self-locking wire cutter according to claim 1, characterized in that: One end surface of the rotating plate away from the tooth groove is an arc-shaped concave structure, and the groove wall of the rotating part groove opposite to the concave structure of the rotating plate is an arc-shaped convex structure. When the rotating plate rotates, its concave structure abuts against the convex structure of the rotating part groove.

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