A wire crimper with easy tension adjustment

Abstract

The utility model discloses a kind of wire crimping pliers of being convenient for adjusting tightness, including mutually matched left handle and right handle, left handle is hinged with left jaw, right handle is hinged with right jaw, further include cover and eccentric shaft, cover is equipped with the first hinged shaft of passing through left jaw and the second hinged shaft of passing through right jaw, eccentric shaft includes first eccentric shaft and second eccentric shaft, first eccentric shaft and second eccentric shaft all include eccentric section and polygonal limit block, left handle and right handle are all provided with polygonal slot, further include first elastic reset member and second elastic reset member, when first eccentric shaft and second eccentric shaft slide, can drive polygonal limit block into, out polygonal slot and realize locking or unlocking, combine polygonal limit block to eccentric shaft, and polygonal slot is directly set on handle, when pressing eccentric shaft, can make polygonal limit block separate from polygonal slot, i.

Description

Technical Field

[0001] This utility model relates to the field of wire crimping pliers, and in particular to a wire crimping pliers that is easy to adjust the tightness of. Background Technology

[0002] In the existing technology, the tightness adjustment of wire clamps is usually adjusted by rotating an eccentric shaft. Most eccentric shafts on the market are currently locked with bolts. When unlocking, the bolts need to be unscrewed before the eccentric shaft can be rotated to achieve tightness adjustment. This adjustment method is relatively complicated and requires the use of tools.

[0003] A small number of wire crimping pliers use a chassis and locking mechanism to achieve locking. The locking mechanism is disengaged from the base by pressing, allowing the eccentric shaft to rotate relative to it. For example, Chinese utility model patent application number 2024210729746 unlocks the eccentric shaft by pulling the locking mechanism away from the toothed groove on the chassis, and then adjusting the tightness by turning the adjustment knob. Although this method is convenient for adjusting the eccentric shaft, it requires the installation of both the locking mechanism and the chassis, making its structure relatively complex and costly. Utility Model Content

[0004] The purpose of this utility model is to overcome the defects of the prior art and provide a wire clamp that is easy to adjust the tightness. The locking block is attached to the eccentric shaft and the positioning groove is directly set on the handle. When the eccentric shaft is pressed, the locking block can be disengaged from the positioning groove, and the eccentric shaft can be rotated to adjust the tightness.

[0005] This utility model discloses a wire clamp with adjustable tightness, including a left clamp handle and a right clamp handle that cooperate with each other. A left clamp head is hinged to the left clamp handle, and a right clamp head is hinged to the right clamp handle. It also includes a cover plate, on which a first hinge shaft passing through the left clamp head and a second hinge shaft passing through the right clamp head are provided. Furthermore, it includes an eccentric shaft for controlling the clamping stroke of the left and right clamp heads. The eccentric shaft comprises a first eccentric shaft slidably passing through the left clamp head and the left clamp handle, and a second eccentric shaft slidably passing through the right clamp head and the right clamp handle. Both eccentric shafts include an eccentric section and a locking section. The locking section is a polygonal limiting block, and both the left and right jaws are provided with polygonal slots that cooperate with the polygonal limiting blocks. The eccentric section of the first eccentric shaft is set corresponding to the left jaw. It also includes a first elastic reset member that drives the polygonal limiting block of the first eccentric shaft into the polygonal slot to achieve locking, and a second elastic reset member that drives the polygonal limiting block of the second eccentric shaft into the polygonal slot. When the first and second eccentric shafts slide, they can drive the polygonal limiting block into and out of the polygonal slot to achieve locking or unlocking.

[0006] Using the above technical solution, during adjustment, pressing the first and second eccentric shafts with external force will cause them to slide relative to each other. At this time, the first and second elastic reset components will deform, and the polygonal limit block will disengage from the polygonal slot, thus being in an unlocked state. At this time, the first and second eccentric shafts can rotate relative to each other, thereby realizing the adjustment of the tightness of the pliers head and handle, and adjusting the pressing stroke through the tightness adjustment. After the adjustment is completed, the external force is removed, the first and second elastic reset components are reset, and the corresponding eccentric shafts are reset, so that the polygonal limit block enters the polygonal slot. At the same time, the outer side of the polygonal limit block will abut against the inner wall of the polygonal slot to form a rotation limit and achieve locking.

[0007] A further feature of this invention is as follows: both the first eccentric shaft and the second eccentric shaft include a large-diameter section on one side of the eccentric section and a small-diameter section on the other side. A polygonal limiting block is located on the large-diameter section. The outer diameter of the large-diameter section is larger than the outer diameter of the eccentric section, and the outer diameter of the small-diameter section is smaller than the outer diameter of the eccentric section. One end of the first elastic reset member acts directly or indirectly on the left clamp handle, and the other end acts on the small-diameter section of the first eccentric shaft. One end of the second elastic reset member acts directly or indirectly on the right clamp handle, and the other end acts on the small-diameter section of the second eccentric shaft.

[0008] Using the above technical solution, the outer diameter of the small-diameter section is smaller than the outer diameter of the eccentric section, and further, the outer diameter of the eccentric section is smaller than the outer diameter of the large-diameter section. In order to adapt, the perforations opened at the corresponding pliers head and pliers handle positions are also from small to large, so that the first eccentric shaft and the second eccentric shaft can be pressed from the small-diameter section, thereby driving the first eccentric shaft and the second eccentric shaft to slide to one side, so that the polygonal limiting block can be successfully disengaged from the polygonal slot.

[0009] A further feature of this invention is that both the first and second elastic reset components are springs, with the springs sleeved on the small-diameter section.

[0010] By adopting the above technical solution, the spring can always maintain a force that pulls the large-diameter section forward, keeping the polygonal limit block in the polygonal slot and preventing the corresponding eccentric shaft from rotating on its own.

[0011] A further feature of this invention is that the ends of the small-diameter sections of the first and second eccentric shafts are threaded with bolts, and limit plates are provided on the bolts. One end of the spring abuts against the corresponding pliers handle, and the other end abuts against the corresponding limit plate. The outer diameter of the limit plate is larger than the outer diameter of the small-diameter section, and the limit plate can abut against the corresponding pliers handle to achieve sliding limit.

[0012] By adopting the above technical solution, during assembly, the first eccentric shaft and the second eccentric shaft can directly pass through the corresponding pliers handle and pliers head. Then, the limiting plate is assembled onto the corresponding eccentric shaft through the threaded engagement of the bolts, which can prevent the first eccentric shaft and the second eccentric shaft from slipping out, making it more stable when pressed.

[0013] A further feature of this invention is that the outer wall of the limiting plate is provided with anti-slip texture.

[0014] Using the above technical solution, the anti-slip texture allows the bolts to be turned directly, eliminating the need for other tools during assembly or disassembly.

[0015] A further feature of this invention is that the spring is a tower-shaped spring, with the smaller end of the spring facing the limiting plate.

[0016] By adopting the above technical solution, the spring can be prevented from detaching from the limiting plate, resulting in better stability. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a perspective view of the present invention from another angle;

[0019] Figure 3 This is a cross-sectional view of the present invention;

[0020] Figure 4 This is a schematic diagram of part of the structure of this utility model;

[0021] Figure 5 This is a diagram showing the assembly of the first eccentric shaft, bolt, and first elastic reset component of this utility model. Detailed Implementation

[0022] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings:

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] This utility model discloses a wire clamp with adjustable tightness, including a left clamp handle 1 and a right clamp handle 2 that cooperate with each other. The left clamp handle 1 is hinged to a left clamp head 11, and the right clamp handle 2 is hinged to a right clamp head 21 (the clamping between the left clamp head 11 and the right clamp head 21 is a conventional technique and is not the main inventive point of this application, so it will not be described in detail here). It also includes a cover plate 3, on which a first hinge shaft 31 passing through the left clamp head 11 and a second hinge shaft 32 passing through the right clamp head 21 are provided. It also includes an eccentric shaft 4 for controlling the clamping stroke of the left clamp head 11 and the right clamp head 21. In the embodiment of this utility model, the eccentric shaft 4 includes a first eccentric shaft 41 that slides through the left clamp head 11 and the left clamp handle 1 and a second eccentric shaft 42 that slides through the right clamp head 21 and the right clamp handle 2. The first eccentric shaft 41 and the second eccentric shaft 42 Each includes an eccentric segment 5 and a locking segment 6. The locking segment 6 is a polygonal limiting block (preferably a regular hexagon, so that it has multiple adjustable rotation angles; it can also be an equilateral triangle or a square; or it can be a number of positioning grooves spaced along the circumference on the handle, with positioning blocks on the eccentric shaft). Both the left handle 1 and the right handle 2 are provided with polygonal slots 7 that cooperate with the polygonal limiting block. The eccentric segment 5 of the first eccentric shaft 41 is provided corresponding to the left jaw 11. It also includes a first elastic reset member 8 that drives the polygonal limiting block of the first eccentric shaft 41 into the polygonal slot 7 to achieve locking, and a second elastic reset member 9 that drives the polygonal limiting block of the second eccentric shaft 42 into the polygonal slot 7. When the first eccentric shaft 41 and the second eccentric shaft 42 slide, they can drive the polygonal limiting block into and out of the polygonal slot 7 to achieve locking or unlocking.

[0025] Using the above technical solution, during adjustment, pressing the first eccentric shaft 41 and the second eccentric shaft 42 with external force will cause them to slide relative to each other. At this time, the first elastic reset member 8 and the second elastic reset member 9 will deform, and the polygonal limiting block will disengage from the polygonal slot 7, thus being in an unlocked state. At this time, the first eccentric shaft 41 and the second eccentric shaft 42 can rotate relative to each other, thereby realizing the adjustment of the tightness of the pliers head and the pliers handle, and adjusting the pressing stroke through the tightness adjustment. After the adjustment is completed, the external force is removed, the first elastic reset member 8 and the second elastic reset member 9 are reset, and the corresponding eccentric shafts are reset, so that the polygonal limiting block enters into the polygonal slot 7. At the same time, the outer side of the polygonal limiting block will abut against the inner wall of the polygonal slot 7 to form a rotation limit and achieve locking.

[0026] The first eccentric shaft 41 and the second eccentric shaft 42 each include a large-diameter section 10 located on one side of the eccentric section 5 and a small-diameter section 20 located on the other side. A polygonal limiting block is located on the large-diameter section 10. The outer diameter of the large-diameter section 10 is larger than the outer diameter of the eccentric section 5, and the outer diameter of the small-diameter section 20 is smaller than the outer diameter of the eccentric section 5. One end of the first elastic reset member 8 acts directly or indirectly on the left clamp handle 1, and the other end acts on the small-diameter section 20 of the first eccentric shaft 41. One end of the second elastic reset member 9 acts directly or indirectly on the right clamp handle 2, and the other end acts on the second eccentric shaft 41. On the small-diameter section 20 of the mandrel 42, the outer diameter of the small-diameter section 20 is smaller than the outer diameter of the eccentric section 5, and further, the outer diameter of the eccentric section 5 is smaller than the outer diameter of the large-diameter section 10. In order to fit, the corresponding through holes opened at the positions of the pliers head and pliers handle corresponding to the eccentric shaft 4 are also from small to large, so that the first eccentric shaft 41 and the second eccentric shaft 42 can be pressed from the small-diameter section 20, thereby driving the first eccentric shaft 41 and the second eccentric shaft 42 to slide to one side, so that the polygonal limiting block can be successfully disengaged from the polygonal slot 7, and the large-diameter section 10 can also limit the displacement.

[0027] Both the first elastic reset member 8 and the second elastic reset member 9 are springs. The springs are sleeved on the small diameter section 20, so that the springs can always maintain a force that pulls the large diameter section 10 forward, which can keep the polygonal limit block in the polygonal slot 7 and prevent the corresponding eccentric shaft 4 from rotating on its own.

[0028] Both the small-diameter sections 20 of the first eccentric shaft 41 and the second eccentric shaft 42 are threaded with bolts 30. A limit plate 40 is provided on the bolt 30. One end of the spring abuts against the corresponding pliers handle, and the other end abuts against the corresponding limit plate 40. The outer diameter of the limit plate 40 is larger than the outer diameter of the small-diameter section 20. The limit plate 40 can slide and limit against the corresponding pliers handle. During assembly, the first eccentric shaft 41 and the second eccentric shaft 42 can directly pass through the corresponding pliers handle and pliers head. Then, the limit plate 40 is assembled onto the corresponding eccentric shaft through the threaded engagement of the bolts 30, which can prevent the first eccentric shaft 41 and the second eccentric shaft 42 from slipping out, making them more stable when pressed.

[0029] The outer wall of the limiting plate 40 is provided with anti-slip texture 50, which can increase the friction force, thereby directly turning the bolt 30 so that it can be assembled or disassembled without the aid of other tools.

[0030] The spring is a tower-shaped spring, and the small end of the spring is set towards the limiting plate 40, which can prevent the spring from detaching from the limiting plate 40 and improve stability.

Claims

1. A wire crimping tool with adjustable tightness, comprising a left handle (1) and a right handle (2) that cooperate with each other, the left handle (1) being hinged to a left head (11), the right handle (2) being hinged to a right head (21), and further comprising a cover plate (3), wherein the cover plate (3) is provided with a first hinge shaft (31) passing through the left head (11) and a second hinge shaft (32) passing through the right head (21), and further comprising an eccentric shaft (4) for controlling the crimping stroke of the left head (11) and the right head (21), characterized in that: The eccentric shaft (4) includes a first eccentric shaft (41) that slides through the left jaw (11) and the left jaw handle (1), and a second eccentric shaft (42) that slides through the right jaw (21) and the right jaw handle (2). Both the first eccentric shaft (41) and the second eccentric shaft (42) include an eccentric section (5) and a locking section (6). The locking section (6) is a polygonal limiting block, and both the left jaw handle (1) and the right jaw handle (2) are provided with polygonal slots (7) that cooperate with the polygonal limiting block. The eccentric section (5) of the spindle (41) is set to correspond to the left clamp head (11). It also includes a first elastic reset member (8) that drives the polygonal limit block of the first eccentric shaft (41) into the polygonal slot (7) to achieve locking, and a second elastic reset member (9) that drives the polygonal limit block of the second eccentric shaft (42) into the polygonal slot (7). When the first eccentric shaft (41) and the second eccentric shaft (42) slide, the polygonal limit block can be driven to enter or exit the polygonal slot (7) to achieve locking or unlocking.

2. The wire clamping pliers for easy adjustment of tightness according to claim 1, characterized in that: The first eccentric shaft (41) and the second eccentric shaft (42) each include a large-diameter section (10) located on one side of the eccentric section (5) and a small-diameter section (20) located on the other side. The polygonal limiting block is located on the large-diameter section (10). The outer diameter of the large-diameter section (10) is greater than the outer diameter of the eccentric section (5), and the outer diameter of the small-diameter section (20) is less than the outer diameter of the eccentric section (5). One end of the first elastic reset member (8) acts directly or indirectly on the left clamp handle (1), and the other end acts on the small-diameter section (20) of the first eccentric shaft (41). One end of the second elastic reset member (9) acts directly or indirectly on the right clamp handle (2), and the other end acts on the small-diameter section (20) of the second eccentric shaft (42).

3. The wire clamping pliers for easy adjustment of tightness according to claim 2, characterized in that: Both the first elastic reset member (8) and the second elastic reset member (9) are springs, which are sleeved on the small diameter section (20).

4. A wire clamping tool with adjustable tightness according to claim 2 or 3, characterized in that: Both the small-diameter section (20) ends of the first eccentric shaft (41) and the second eccentric shaft (42) are threaded with bolts (30). A limit plate (40) is provided on the bolt (30). One end of the spring abuts against the corresponding pliers handle, and the other end abuts against the corresponding limit plate (40). The outer diameter of the limit plate (40) is larger than the outer diameter of the small-diameter section (20). The limit plate (40) can abut against the corresponding pliers handle to achieve sliding limit.

5. A wire clamping tool with adjustable tightness according to claim 4, characterized in that: The outer wall of the limiting plate (40) is provided with anti-slip texture (50).

6. A wire clamping tool with adjustable tightness according to claim 3, characterized in that: The spring is a tower-shaped spring, and the small end of the spring is set towards the limiting plate (40).

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