Wire stripper

Abstract

The invention relates to the technical field of wire stripping pliers, in particular to a wire stripping plier which comprises a first plier handle and a second plier handle which are hinged through a rotating shaft, and the front ends of the first plier handle and the second plier handle form a first jaw part and a second jaw part respectively; the mounting part is arranged on the first jaw part, the switching part is rotatably arranged on the mounting part, a plurality of wire stripping grooves used for stripping insulating layers of wires with different wire diameters are formed in the outer surface of the switching part, and a common wire stripping groove matched with all the wire stripping grooves in the switching part is formed in the second jaw part. According to the invention, by arranging the switching piece with the plurality of wire stripping grooves with the preset specifications and cooperating with the driving and locking mechanism, during operation, the switching piece is only required to be driven to rotate, the wire stripping grooves with the required specifications are rotated to the working positions and are automatically or manually fixed by the locking mechanism, so that the matching can be instantly completed; the mechanical locking mechanism overcomes the defects that a traditional adjusting screw is prone to loosening and poor in return, and stability of working gears in the operation process is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of wire strippers, and more particularly to a type of wire stripper. Background Technology

[0002] Wire strippers are basic manual tools used in electrical and electronic work to strip the insulation of wires. In such work, it is often necessary to handle wires of various diameters. Therefore, the ability of the tool to quickly and accurately adapt to different wire diameters is the key to measuring its applicability and efficiency.

[0003] Currently, the most widely used type is the adjustable wire stripper, which uses an adjusting screw to steplessly change the jaw opening. However, this technology has inherent drawbacks: due to the lack of preset, standardized discrete settings, each adjustment requires the user to rely on experience or additional measuring tools to repeatedly tighten and loosen the screw for trial calibration to approximate the target wire diameter. This process is not only cumbersome and time-consuming, but also makes it difficult to accurately reproduce the same specifications. Especially after repeated use, the adjusting mechanism is prone to hysteresis or loosening, causing the preset value to drift and seriously affecting the wire stripping accuracy and consistency. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide a wire stripper to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention provides a wire stripper, comprising:

[0006] The first and second clamp handles are hinged together by a pivot, and their front ends respectively form a first jaw portion and a second jaw portion.

[0007] The first jaw portion has a mounting portion and a switching member rotatably disposed on the mounting portion. The outer surface of the switching member has a plurality of stripping grooves for stripping the insulation layer of wires of different diameters. The second jaw portion has a common stripping groove that is adapted to all the stripping grooves on the switching member.

[0008] A drive mechanism, which is disposed on the first jaw portion, is used to drive the switching member to rotate so as to switch any of the stripping grooves to a position directly opposite the common stripping groove;

[0009] A locking mechanism is provided on the first jaw portion for locking the rotation of the switching member after the switching member has completed the switching.

[0010] As a preferred embodiment of the present invention, the switching component is disc-shaped, and the mounting portion is a mounting slot formed on the first jaw portion for accommodating the disc-shaped switching component.

[0011] As a preferred embodiment of the present invention, the driving mechanism includes a driving bolt, and the switching component has a non-circular rotating hole at its center. The cross-sectional shape of the rod of the driving bolt is adapted to the rotating hole and passes through it. A rotating groove is provided on the first jaw portion. After the rod of the driving bolt passes through the rotating groove and the rotating hole of the switching component, it is locked by a nut. The diameter of the rotating groove is larger than the diameter of the rod, so that when the driving bolt is axially constrained on the first jaw portion by the nut, it can still rotate freely in the rotating groove. By rotating the driving bolt, the switching component can be rotated.

[0012] As a preferred embodiment of the present invention, the cross-section of the rod of the driving bolt is a near-cylindrical shape with planes on both sides, and the rotating hole is a rectangular hole or an irregularly shaped hole with planes on both sides that is adapted to it.

[0013] As a preferred embodiment of the present invention, the locking mechanism includes:

[0014] A fixing frame is fixed to the first jaw portion, and the fixing frame is provided with a sliding groove;

[0015] spring;

[0016] A sliding rod is slidably disposed in the sliding groove. One end of the sliding rod is subjected to the action of the spring and has a tendency to move toward the switching component. The switching component has positioning holes that correspond one-to-one with the wire stripping groove. The sliding rod can be inserted into any positioning hole under the action of the spring to lock the switching component.

[0017] As a preferred embodiment of the present invention, the switching component is provided with specification marks corresponding to each wire stripping groove, and the first jaw is provided with an observation window for observing the marks.

[0018] As a preferred embodiment of the present invention, the common stripping groove is a V-shaped groove or an arc-shaped groove.

[0019] As a preferred embodiment of the present invention, the wire stripper further includes a grinding component, which includes a fixedly disposed grinding stone, and its working surface makes frictional contact with the area on the switching component where the wire stripping groove is formed.

[0020] As a preferred embodiment of the present invention, the grinding assembly further includes a grinding stone fixing plate, which is adjustablely disposed on the side wall of the mounting part, and the grinding stone is disposed on the grinding stone fixing plate.

[0021] As a preferred embodiment of the present invention, the grinding stone fixing plate is connected to the first jaw portion via an adjustment mechanism, the adjustment mechanism comprising:

[0022] At least one positioning groove is formed on the inner wall of the mounting through groove;

[0023] At least one positioning rod is disposed on the grinding stone fixing plate and slides in cooperation with the positioning groove;

[0024] The positioning bolt has one end threadedly connected to a threaded hole on the inner wall of the mounting slot, and the nut at the other end acts on the grinding stone fixing plate. Rotating the positioning bolt can drive the grinding stone fixing plate to move along the axial direction of the positioning rod to adjust the fit between the grinding stone and the switching component.

[0025] The beneficial effects of this invention are:

[0026] This invention features a switching component with multiple preset wire stripping grooves. Combined with a drive and locking mechanism, during operation, simply drive the switching component to rotate and move the wire stripping groove of the required specification to the working position. The locking mechanism then automatically or manually fixes the groove, instantly completing the matching process. This eliminates the need for tedious trial calibration steps. At the same time, the mechanical locking mechanism overcomes the defects of traditional adjusting screws, such as easy loosening and backlash, ensuring the stability of the working position during operation. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the front-end three-dimensional structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the rear-end three-dimensional structure of the present invention;

[0030] Figure 3 This is a three-dimensional structural diagram of the first and second clamp handles of the present invention in their closed states;

[0031] Figure 4 This is a partial three-dimensional structural diagram of the front end of the first jaw portion of the present invention;

[0032] Figure 5 This is a partial cross-sectional three-dimensional structural diagram of the rear end of the first jaw portion of the present invention;

[0033] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle;

[0034] Figure 7 This is a partial three-dimensional structural diagram of the switching component of the present invention.

[0035] The markings in the diagram are as follows: 1. First clamp handle; 11. First jaw section; 111. Mounting through groove; 112. Observation window; 113. Rotating groove; 2. Second clamp handle; 21. Second jaw section; 211. Common stripping groove; 3. Switching component; 31. Stripping groove; 32. Rotating hole; 33. Positioning hole; 34. Mark; 4. Drive mechanism; 41. Drive bolt; 411. Rod; 42. Nut; 5. Locking mechanism; 51. Fixing frame; 511. Slide groove; 52. Slide rod; 53. Spring; 54. Handle; 6. Grinding assembly; 61. Grinding stone; 62. Grinding stone fixing plate; 63. Positioning rod; 64. Positioning groove; 65. Positioning bolt; 66. Bolt mounting hole. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0037] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] like Figure 1 , Figure 2 and Figure 3 As shown, a wire stripper includes: a first handle 1 and a second handle 2 hinged together by a pivot, the front ends of which respectively form a first jaw portion 11 and a second jaw portion 21; a mounting portion disposed on the first jaw portion 11; and a switching member 3 rotatably disposed on the mounting portion, the outer surface of the switching member 3 having a plurality of stripping grooves 31 for stripping insulation layers of wires of different diameters, the second jaw portion 21 having a common stripping groove 211 adapted to all the stripping grooves 31 on the switching member 3; a driving mechanism 4 disposed on the first jaw portion 11 for driving the switching member 3 to rotate, so as to switch any stripping groove 31 to a position directly opposite the common stripping groove 211; and a locking mechanism 5 disposed on the first jaw portion 11 for locking the rotation of the switching member 3 after the switching member 3 has completed the switching.

[0039] The above technical solution enables multiple uses for a single clamp. Specifically, its working principle is as follows: A rotatable switching element 3 is provided on the first jaw 11, which integrates multiple stripping grooves 31 of different specifications. In use, simply rotate the switching element 3 via the drive mechanism 4 to quickly switch any desired stripping groove 31 to the working position and precisely align it with the common stripping groove 211 on the second jaw 21. Then, it is fixed by the locking mechanism 5. The operation steps are simple, which helps to improve the work efficiency of electricians and maintenance personnel.

[0040] like Figure 3 and Figure 4 As shown, the switching component 3 is disc-shaped, and the mounting part is used to rotatably support the switching component 3. In this embodiment, it is a mounting through groove 111 opened in the first jaw part 11, but it can also be other bearing structures or support frames with similar functions.

[0041] The above technical solution can solve the problems of smooth rotation of the switching component 3 and space utilization. Specifically, its working principle is as follows: by using the rotational motion of the disc, different stripping grooves 31 distributed on the circumference are brought into the working area in sequence. The disc rotates stably in the mounting through groove 111. The structure is compact and the space utilization is high, making the jaw structure regular, the rotation smooth, and the overall volume small.

[0042] like Figure 4 and Figure 5 As shown, in this embodiment, the drive mechanism 4 includes a drive bolt 41. A non-circular rotating hole 32 is provided at the center of the switching member 3. The cross-sectional shape of the rod portion 411 of the drive bolt 41 is adapted to the rotating hole 32 and passes through it. A rotating groove 113 is provided on the first jaw portion 11. After the rod portion 411 of the drive bolt 41 passes through the rotating groove 113 and the rotating hole 32 of the switching member 3, it is locked by the nut 42. The diameter of the rotating groove 113 is slightly larger than the diameter of the rod portion 411, so that when the drive bolt 41 is axially constrained on the first jaw portion 11 by the nut 42, it can still rotate freely within the rotating groove 113. Rotating the drive bolt 41 can drive the switching member 3 to rotate.

[0043] The above technical solution can solve the rotation and limiting problem of the switching component 3. Specifically, its working principle is as follows: the rod 411 of the drive bolt 41 is adapted to the cross section of the rotating hole 32 to form a transmission pair. In use, the operator uses a tool such as a screwdriver or wrench to rotate the head of the drive bolt 41, and its torque is directly transmitted to the switching component 3 through the rod 411, causing it to rotate.

[0044] like Figure 4 As shown, in this embodiment, the nut end of the drive bolt 41 is formed with a screwing groove for screwing, and the screwing groove is either in the shape of a straight line or in the shape of a cross.

[0045] The above technical solution can use a standard screwdriver as a driving tool to transmit the rotational action to the driving bolt 41 by turning the groove. During operation, when it is necessary to change the stripping groove specification, the driving bolt 41 is rotated to the corresponding position with a screwdriver and locked by the locking mechanism. When it is necessary to activate the grinding function, the driving bolt 41 is simply turned back and forth in any position to drive the switching part 3 to rotate slightly, so that its cutting edge rubs against the fixed grinding stone 61.

[0046] like Figure 4 and Figure 5 As shown, in this embodiment, the cross-section of the rod portion 411 of the driving bolt 41 is a near-cylindrical shape with flat surfaces on both sides, and the rotating hole 32 is a rectangular hole or an irregularly shaped hole with flat surfaces on both sides that is adapted to it.

[0047] The above technical solution can transmit torque using a plane, while the cylindrical part ensures centering. In use, this matching method can effectively prevent relative free rotation between the drive bolt 41 and the switching part 3.

[0048] like Figure 5 and Figure 6 As shown, in this embodiment, the locking mechanism 5 includes: a fixed frame 51, which is fixed on the first jaw portion 11, and the fixed frame 51 is provided with a sliding groove 511; a spring 53; and a sliding rod 52, which is slidably disposed in the sliding groove 511. One end of the sliding rod 52 is subjected to the action of the spring 53 and has a tendency to move toward the switching member 3. Specifically, the spring 53 is a compression spring, which is sleeved on the sliding rod 52. One end of the spring 53 abuts against the fixed frame 51, and the other end abuts against the shoulder on the sliding rod 52, thereby providing a continuous thrust to the sliding rod 52. The switching member 3 is provided with positioning holes 33 that correspond one-to-one with the stripping groove 31. Under the action of the spring 53, the sliding rod 52 can be inserted into any positioning hole 33 to lock the switching member 3.

[0049] The above technical solution solves the problem of the switching component 3 accidentally rotating due to vibration or force during operation. Specifically, its working principle is as follows: the elastic force of the spring 53 continuously pushes the slide rod 52 towards the switching component 3; when the switching component 3 rotates to align with a certain positioning hole 33 on it, the end of the slide rod 52 automatically engages under the action of the spring force, achieving mechanical locking. During use, each switch to a new specification is accompanied by a "click" sound. The positioning is accurate and the feel is clear.

[0050] like Figure 5 and Figure 6 As shown, in this embodiment, the slider 52 is connected to a handle 54 for easy operation at its other end away from the switching member 3;

[0051] The above technical solution solves the problem of inconvenience in applying force when directly moving the slide bar 52. Specifically, its working principle is as follows: the pulling force acting on the handle 54 is transmitted to the slide bar 52, overcoming the elasticity of the spring 53 and causing it to retract. In use, the operator only needs to pinch the handle 54 with their fingers and pull it outward to unlock and switch. After releasing, it automatically resets and locks.

[0052] like Figure 4 , Figure 5 and Figure 7 As shown, in this embodiment, the switching component 3 is provided with specification marks 34 corresponding to each wire stripping groove 31, and the first jaw portion 11 is provided with an observation window 112 for observing the marks 34.

[0053] The above technical solution can solve the problem of easily selecting the wrong slot when switching between multiple specifications. Specifically, its working principle is as follows: the specification mark 34 information of the current working slot can be directly read through the observation window 112.

[0054] like Figure 1 and Figure 3 As shown, in this embodiment, the common stripping groove 211 is a V-shaped groove or an arc-shaped groove. The taper and depth of the V-shaped or arc-shaped opening of the common stripping groove 211 are designed so that when it is closed with any size stripping groove 31, the opposite sides of the two grooves can jointly form a nearly closed clamping hole that matches the corresponding cable diameter, thereby ensuring effective clamping of the insulation layer.

[0055] The above technical solution solves the structural complexity problem caused by configuring a perfectly matching fixing slot for each specification. Specifically, its working principle is as follows: using a V-shaped or arc-shaped progressive clamping surface to adapt to the cables corresponding to different diameter stripping slots 31 on the switching component 3. In use, regardless of which specification is switched to, the common stripping slot 211 can form a good envelope contact with the corresponding cable.

[0056] like Figure 4 and Figure 5 As shown, in this embodiment, the wire stripper also includes a grinding component 6, which includes a fixedly disposed grinding stone 61, the working surface of which is in frictional contact with the area on the switching component 3 where the wire stripping groove 31 is formed.

[0057] The above technical solution can solve the problem of dulling of the wire stripper's blade edge after long-term use. Specifically, its working principle is as follows: the working surface of the grinding stone 61 is in contact with the area on the switching piece 3 where the wire stripping groove 31 is formed. During use, whenever the operator rotates the drive bolt 41 to switch specifications, the rotation of the switching piece 3 will cause its blade edge area to rub against the fixed grinding stone 61, achieving automatic micro-grinding.

[0058] like Figure 4 and Figure 5As shown, in this embodiment, the grinding assembly 6 further includes a grinding stone fixing plate 62, which is adjustablely disposed on the side wall of the mounting part, and the grinding stone 61 is disposed on the grinding stone fixing plate 62.

[0059] The above technical solution can solve the problem of poor contact between the whetstone 61 and the cutting edge due to wear or initial installation error. Specifically, its working principle is to provide a movable mounting base for the whetstone 61.

[0060] like Figure 4 and Figure 5 As shown, in this embodiment, the grinding stone fixing plate 62 is connected to the first jaw portion 11 through an adjustment mechanism. The adjustment mechanism includes: at least one positioning groove 64 opened on the inner wall of the mounting through groove 111; at least one positioning rod 63 disposed on the grinding stone fixing plate 62 and slidingly engaged with the positioning groove 64; and a positioning bolt 65, one end of which is threadedly connected to a threaded hole opened on the inner wall of the mounting through groove 111, and the nut at the other end of which acts on the grinding stone fixing plate 62. Rotating the positioning bolt 65 can drive the grinding stone fixing plate 62 to move axially along the positioning rod 63 to adjust the contact state between the grinding stone 61 and the switching member 3.

[0061] The above technical solution solves the problem of fixed grinding stones being unable to compensate for their own wear. Specifically, its working principle is as follows: the positioning rod 63 slides with the positioning groove 64, ensuring that the grinding stone fixing plate 62 can only move linearly along the direction perpendicular to the end face of the switching component 3. Rotating the positioning bolt 65 will push or loosen the grinding stone fixing plate 62, thereby controlling the forward or backward movement of the grinding stone 61. During use, when the grinding effect is felt to be weakened, the positioning bolt 65 can be tightened slightly to push the grinding stone 61 to re-closely fit the cutting edge. Specifically: Under normal conditions (automatic micro-grinding): by adjusting the pre-tightening mechanism, a constant slight contact pressure is maintained between the working surface of the grinding stone and the cutting edge area of ​​the switching component. The switching component rubs against it during any rotation. In maintenance mode (active adjustment required): when the grinding stone is worn, the positioning bolt 65 is tightened to push the grinding stone fixing plate 62 to move axially along the positioning rod 63, re-establishing or adjusting the above contact pressure.

[0062] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

[0063] This invention aims to cover all such substitutions, modifications, and variations that fall within the scope of protection. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A wire stripper, comprising: The first clamp handle (1) and the second clamp handle (2) are hinged by a pivot, and the front ends of the two respectively form a first jaw portion (11) and a second jaw portion (21). The wire stripper is characterized in that it further includes: The mounting part is provided on the first jaw (11), and the switching part (3) is rotatably provided on the mounting part. The outer surface of the switching part (3) is provided with a plurality of stripping grooves (31) for stripping the insulation layer of wires of different diameters. The second jaw (21) is provided with a common stripping groove (211) that is adapted to all the stripping grooves (31) on the switching part (3). A drive mechanism (4) is provided on the first jaw (11) for driving the switching member (3) to rotate so as to switch any of the stripping grooves (31) to a position directly opposite the common stripping groove (211); A locking mechanism (5) is provided on the first jaw (11) for locking the rotation of the switching member (3) after the switching is completed.

2. The wire stripper according to claim 1, characterized in that, The switching component (3) is disc-shaped, and the mounting part is a mounting through groove (111) opened on the first jaw part (11) for accommodating the disc-shaped switching component (3).

3. The wire stripper according to claim 2, characterized in that, The drive mechanism (4) includes a drive bolt (41), and the switching component (3) has a non-circular rotating hole (32) at its center. The cross-sectional shape of the rod (411) of the drive bolt (41) is adapted to the rotating hole (32) and passes through it. The first jaw (11) is provided with a rotating groove (113). The rod (411) of the drive bolt (41) passes through the rotating groove (113) and the rotating hole (32) of the switching member (3) and is locked by the nut (42). The diameter of the rotating groove (113) is larger than the diameter of the rod (411), so that when the drive bolt (41) is axially constrained on the first jaw (11) by the nut (42), it can still rotate freely in the rotating groove (113). By rotating the drive bolt (41), the switching member (3) can be driven to rotate.

4. The wire stripper according to claim 3, characterized in that, The cross-section of the rod (411) of the drive bolt (41) is a cylindrical shape with flat surfaces on both sides, and the rotating hole (32) is a rectangular hole or an irregular hole with flat surfaces on both sides.

5. The wire stripper according to claim 2, characterized in that, The locking mechanism (5) includes: A fixing frame (51) is fixed on the first jaw (11), and the fixing frame (51) is provided with a sliding groove (511). Spring (53); The slide rod (52) is slidably disposed in the slide groove (511). One end of the slide rod is subjected to the action of the spring (53) and has a tendency to move toward the switching member (3). The switching member (3) is provided with positioning holes (33) that correspond one-to-one with the stripping groove (31). The slide rod (52) can be inserted into any positioning hole (33) under the action of the spring (53) to lock the switching member (3).

6. The wire stripper according to claim 2, characterized in that, The switching component (3) is provided with specification marks (34) corresponding to each wire stripping groove (31), and the first jaw (11) is provided with an observation window (112) for observing the marks (34).

7. The wire stripper according to claim 2, characterized in that, The common stripping groove (211) is a V-shaped groove or an arc-shaped groove.

8. The wire stripper according to any one of claims 2-7, characterized in that, The wire stripper also includes a grinding assembly (6), which includes a fixed grinding stone (61) whose working surface is in frictional contact with the area on the switching piece (3) where the stripping groove (31) is formed.

9. The wire stripper according to claim 8, characterized in that, The grinding assembly (6) also includes a grinding stone fixing plate (62), which is adjustablely disposed on the side wall of the mounting part, and the grinding stone (61) is disposed on the grinding stone fixing plate (62).

10. The wire stripper according to claim 9, characterized in that, The grinding stone fixing plate (62) is connected to the first jaw portion (11) via an adjustment mechanism, the adjustment mechanism comprising: At least one positioning groove (64) is formed on the inner wall of the mounting through groove (111). At least one positioning rod (63) is disposed on the grinding stone fixing plate (62) and slides in cooperation with the positioning groove (64). The positioning bolt (65) has one end threadedly connected to the threaded hole on the inner wall of the mounting slot (111), and the nut at the other end acts on the grinding stone fixing plate (62). Rotating the positioning bolt (65) can drive the grinding stone fixing plate (62) to move axially along the positioning rod (63) to adjust the fit between the grinding stone (61) and the switching piece (3).

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