Accurate wire stripper
By setting a pressure plate and a wire support block on the pliers head of the wire stripper and setting a blocking mechanism at the back end of the movable pliers, the problem that existing wire strippers are difficult to accurately control the cutting force, and the cable insulation is achieved Accurate cutting to avoid damage to the internal wires.
Patent Information
- Application Number
- CN202411560488.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-02-07
AI Technical Summary
Existing wire strippers are difficult to accurately control the cutting force during the process of peeling off the insulating skin, which can easily damage the wires inside the cable, resulting in failure of electrical connections.
Design an accurate wire stripper, adopting two sets of hinged pliers, the first and second pressure plates are arranged on the pliers head, and the cable is clamped with the support block, and a block is provided at the rear end of the movable pliers knife. Mechanism ensures precise control of the cutting depth of the movable pliers after cutting is completed.
Accurate cutting of cable insulation is achieved to avoid damage to internal conductors and ensure the normal completion of electrical connections.
Smart Images
Figure CN119401298A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of wire strippers, and in particular to a precision wire stripper. Background Art
[0002] Wire strippers are a commonly used electrician's tool, and their function is to strip the insulation skin on the outside of the cable, so as to facilitate electrical connection between the cables. Conventional wire strippers are similar to scissors, and need to rotate after the jaws clamp the cable to completely cut off and strip the outer insulation skin. At present, there is an improved wire stripper based on the scissors, which does not need to be rotated, and only needs to hold the pliers handle, so that the pliers knife and the clamp on the pliers head clamp the cable first, and then holding the pliers handle again can drive the pliers heads to separate from each other, so that the clamp and the embedded knife generate lateral force to strip the insulation skin. This improved wire stripper only needs to hold the pliers handle to perform the wire stripping operation, which improves work efficiency compared to the commonly used wire strippers, but both of these wire strippers strip the insulation skin through the pliers knife part, so they are always in a clamping and cutting state during the process of stripping the insulation skin, and general users cannot control the cutting force well when stripping the wire, which causes the wire inside the cable to be damaged by the side scraping force of the pliers knife, and the electrical connection cannot be completed normally.
[0003] In view of this, a design or technical improvement is now proposed to solve the above problems.
[0004] The above contents are only used to assist in understanding the technical solution of the present invention, and do not constitute an admission that the above contents are the closest prior art. Summary of the invention
[0005] The purpose of the present invention is to solve the above-mentioned shortcomings and provide a precision wire stripper.
[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:
[0007] A precision wire stripping pliers comprises two groups of pliers bodies hinged to each other, pliers handles are hinged on the two groups of pliers bodies respectively, a first spring is arranged between the pliers handles, a pliers head is arranged at one end of the pliers body away from the pliers handles, a first pressure plate and a second pressure plate are respectively arranged on the pliers head for limiting sliding forward and backward relative to the pliers body direction, and a wire supporting block for cooperating with the first pressure plate and the second pressure plate to clamp the cable is also arranged on the pliers head; a movable pliers knife for limiting sliding in the same direction as the second pressure plate and a fixed pliers knife for clamping and cutting the cable are arranged on the pliers head provided with the second pressure plate, and the movable pliers knife is arranged between the first pressure plate and the second pressure plate; a blocking mechanism for controlling its further cutting is arranged at the rear end of the movable pliers knife, and the blocking mechanism is triggered when the two groups of pliers heads are away from each other.
[0008] Furthermore, a first movable frame is arranged on the first pressure plate, the second pressure plate is connected to a second movable frame via a second spring, limiting slide grooves are arranged on the first movable frame and the second movable frame, a first fixed plate is arranged on the clamp head, and a limiting rod is arranged on the first fixed plate and is connected to the limiting slide groove so as to enable the first movable frame and the second movable frame to slide within the upper limit of the clamp head.
[0009] Furthermore, connecting rods are respectively hingedly provided between the two groups of clamp handles and the first movable frame and the second movable frame, so that when the clamp handles are pinched, the first movable frame and the second movable frame will slide to the side of the wire supporting block in a limited manner.
[0010] Furthermore, a limit plate is provided on the second movable frame, and a through groove is provided on the limit plate for the movable pliers to slide within it, and a third spring is also provided between the limit plate and the movable pliers, so that the limit plate can be reset by the third spring after the telescopic activity.
[0011] Furthermore, a cylindrical shaft is provided at the rear end of the movable pliers blade, and a movable gap is formed between the shaft and the movable pliers blade, and the blocking mechanism includes a limit frame arranged on the second movable frame, a push plate that slides in a limit cavity opened on the limit frame, a fixed block fixed on the pliers head provided with a first pressure plate, and an elastic rubber plate which is hinged to the push plate and the fixed block at both ends; a wedge-shaped surface that cooperates with the shaft is provided on the push plate, and the wedge-shaped surface does not abut against the shaft in the initial state.
[0012] Furthermore, a gear is rotatably arranged in the limit cavity, and a support plate is also provided which is limitedly slidable in a direction parallel to the push plate, and the gear is located between the push plate and the support plate, and tooth surfaces meshing with the gear are provided on opposite sides of the push plate and the support plate; under normal conditions, the support plate abuts against the movable pliers and the push plate and there is friction, so that the deformation of the rubber plate when the push plate follows the movable pliers to move toward the fixed pliers will not pull it to slide in the limit cavity.
[0013] Furthermore, the blade end of the movable pliers is provided with a limiting side plate for limiting its sliding movement.
[0014] Furthermore, the pliers bodies are respectively provided with second fixing plates, and fourth springs are provided between the second fixing plates, so that the pliers handles preferentially drive the first movable frame and the second movable frame to slide when engaged.
[0015] Compared with the prior art, the beneficial effects of the present solution are as follows: the present wire stripping pliers respectively provide a first pressure plate and a second pressure plate on two sets of pliers heads, and use them to cooperate with the wire supporting block to clamp the cable, and at the same time, the movable pliers knife is provided between the first pressure plate and the second pressure plate, so that the first pressure plate and the second pressure plate clamp the cable on both sides of the cutting port, and then cooperate with the blocking mechanism, so that at the moment the cutting is completed and the insulation skin is severed, the blocking mechanism can synchronously retract the movable pliers knife, accurately control the cutting depth of the movable pliers knife, and ensure that the internal wires will not be damaged after cutting. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:
[0017] Figure 1 is a front perspective schematic diagram of an embodiment of the present invention;
[0018] Figure 2 is a front view schematic diagram of an embodiment of the present invention;
[0019] Figure 3 is a cross-sectional perspective schematic diagram of a clamp body in an embodiment of the present invention;
[0020] Figure 4 is a schematic diagram of the disassembly of the pliers body in an embodiment of the present invention;
[0021] Figure 5 Embodiment of the present invention Figure 2 The enlarged schematic diagram of point A in the middle;
[0022] Figure 6 Embodiment of the present invention Figure 3 The enlarged schematic diagram of point B in the middle;
[0023] Figure 7 is a disassembly diagram of the first pressing plate and the limiting rod in an embodiment of the present invention;
[0024] Figure 8 is a three-dimensional schematic diagram of a second movable frame in an embodiment of the present invention;
[0025] Fig. 9 It is a schematic diagram of the combined structure of the second movable frame, the second pressing plate, the movable pliers, and the blocking mechanism in an embodiment of the present invention;
[0026] Fig.10 is a schematic diagram of a partial structure of a blocking mechanism in an embodiment of the present invention;
[0027] Fig.11 2 is a schematic structural diagram of a movable pliers cutter according to an embodiment of the present invention;
[0028] Fig.12 is a schematic diagram of the matching relationship between the push plate and the support plate in an embodiment of the present invention;
[0029] Fig.13 It is a combined cross-sectional schematic diagram of the second movable frame, the limiting plate, the movable pliers and the limiting frame in the embodiment of the present invention.
[0030] In the figure: 1, pliers body; 11, pliers handle; 12, first spring; 2, pliers head; 21, first pressure plate; 22, second pressure plate; 23, wire support block; 24, movable pliers; 25, fixed pliers; 3, first movable frame; 31, second spring; 32, second movable frame; 33, limiting slide groove; 34, first fixed plate; 35, limiting rod; 4, connecting rod; 5, limiting plate; 51, through groove; 52, third spring; 6, shaft; 61, movable gap; 62, limiting frame; 63, limiting cavity; 64, push plate; 65, fixed block; 66, rubber plate; 67, wedge surface; 7, gear; 71, frame plate; 72, tooth surface; 8, limiting side plate; 9, second fixed plate; 91, fourth spring. DETAILED DESCRIPTION
[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.
[0032] like Figure 1-13The precision wire stripping pliers shown in the figure include two groups of mutually hinged pliers bodies 1, the two groups of pliers bodies 1 are respectively hinged with pliers handles 11, a first spring 12 is arranged between the pliers handles 11, a pliers head 2 is arranged at the end of the pliers body 1 away from the pliers handle 11, and the pliers head 2 is respectively provided with a first pressing plate 21 and a second pressing plate 22 that can slide forward and backward relative to the pliers body 1, and at the same time, the pliers head 2 is also provided with a wire supporting block 23 that cooperates with the first pressing plate 21 and the second pressing plate 22 to clamp the cable; the pliers head 2 provided with the second pressing plate 22 is provided with an active pliers knife 24 that can slide in the same direction as the second pressing plate 22 and a fixed pliers knife 25 that cooperates with the active pliers knife 24 to clamp and cut the cable, and the active pliers knife 24 is arranged between the first pressing plate 21 and the second pressing plate 22; the rear end of the active pliers knife 24 is provided with a blocking mechanism that controls its further cutting, and the blocking mechanism is triggered when the two groups of pliers heads 2 are away from each other. When the device is used, first, the upper end of the pliers head 2 is used to The first pressing plate 21 and the second pressing plate 22 cooperate with the wire supporting block 23 to clamp the cable, and use the movable pliers knife 24 and the fixed pliers knife 25 to clamp and cut the cable. The first pressing plate 21 and the second pressing plate 22 are respectively located on both sides of the cutting opening, and the movable pliers knife 24 and the fixed pliers knife 25 are provided with a ring-shaped blade when closed, and the insulating skin is cut in all directions using the ring-shaped blade. When the cutting is completed, the pliers head 2 separates to both sides under the kneading action of the pliers handle 11, thereby triggering the blocking mechanism to retract the movable pliers knife 24. At this time, the movable pliers knife 24 and the fixed pliers knife 25 stop continuing to cut the cable, so that it does not cause damage to the internal wires. The first pressing plate 21 and the second pressing plate 22 cooperate with the wire supporting block 23 to pull and separate the cable from both sides of the fracture, thereby avoiding the risk of easily damaging the internal wires by stripping the insulating skin with the movable pliers knife 24 and the fixed pliers knife 25, achieving the effect of precise cutting and improving the user experience.
[0033] In one embodiment, a first movable frame 3 is provided on the first pressing plate 21, and the second pressing plate 22 is connected to the second movable frame 32 through a second spring 31. The second spring 31 can be sleeved with a rod body that is provided on the second pressing plate 22 and slidably connected with the second movable frame 32 to stabilize its extension and contraction process. A limiting slide groove 33 is provided on the first movable frame 3 and the second movable frame 32. A first fixed plate 34 is provided on the pliers head 2. A limiting rod 35 that is connected in the limiting slide groove 33 and is used to make the first movable frame 3 and the second movable frame 32 slide within the upper limit of the pliers head 2 is provided on the first fixed plate 34. Connecting rods 35 are respectively hingedly provided between the two sets of pliers handles 11 and the first movable frame 3 and the second movable frame 32. When the rod 4 is engaged with the pliers handle 11 by hand, it drives the first movable frame 3 and the second movable frame 32 to move toward the side of the wire supporting block 23 through the connecting rods 4 at both ends, and then drives the first pressure plate 21 and the second pressure plate 22 to cooperate with the wire supporting block 23 to clamp the cable. When the clamping is tightened, the first movable frame 3 and the second movable frame 32 cannot slide. At this time, the pliers handle 11, the pliers body 1, and the connecting rod 4 are respectively integrated with the first movable frame 3 and the second movable frame 32, and rotate sideways with the hinge point between the two groups of pliers bodies 1 as the center, so that the pliers head 2 is opened, and then the first pressure plate 21 and the second pressure plate 22 cooperate with the wire supporting block 23 to pull the cable laterally from both sides of the cutting port of the cable.
[0034] In one embodiment, a limit plate 5 is provided on the second movable frame 32, and a through groove 51 is provided on the limit plate 5 for the movable pliers 24 to slide within the limit position, and a third spring 52 is also provided between the limit plate 5 and the movable pliers 24, so that the limit plate 5 can be reset by the third spring 52 after the telescopic activity, and a cylindrical shaft rod 6 is provided at the rear end of the movable pliers 24, and an active gap 61 is formed between the shaft rod 6 and the movable pliers 24, and the blocking mechanism includes a limit frame 62 provided on the second movable frame 32, a push plate 64 sliding in a limit position in a limit cavity 63 provided on the limit frame 62, and a fixed A fixed block 65 on the pliers head 2 provided with a first pressure plate 21 and a rubber plate 66 which is hinged at both ends to the push plate 64 and the fixed block 65 and has elasticity; the push plate 64 is provided with a wedge-shaped surface 67 which cooperates with the shaft rod 6, and the wedge-shaped surface 67 does not abut against the shaft rod 6 in the initial state. When the pliers head 2 is relatively pulled apart, the fixed block 65 will pull the push plate 64 to slide in the limit cavity 63 through the rubber plate 66, and the wedge-shaped surface 67 at its upper end will gradually abut against the shaft rod 6, so that the blade end of the movable pliers knife 24 will shrink toward the limit plate 5, thereby realizing the separation of the movable pliers knife 24 and the fixed pliers knife 25.
[0035] In one embodiment, a gear 7 is rotatably arranged in the limiting cavity 63, and a support plate 71 is also arranged to limit the sliding movement in a parallel direction with the push plate 64, and the gear 7 is located between the push plate 64 and the support plate 71, and the push plate 64 and the support plate 71 are provided with tooth surfaces 72 meshing with the gear 7 on the opposite sides thereof; under normal conditions, the support plate 71 is in contact with the movable pliers 24 and the push plate 64 and has friction, so that when the push plate 64 follows the movable pliers 24 to move toward the fixed pliers 25 side, the rubber plate 6 6 will not cause it to slide in the limiting cavity 63. By setting the support plate 71, the integrity between the movable pliers 24 and the push plate 64 is enhanced when the pliers head 2 is in the closed state. Therefore, when the movable pliers 24 moves toward the side of the fixed pliers 25, the push plate 64 will not push against the push shaft 6 to retract the movable pliers 24 due to the pulling of the rubber plate 66, thereby ensuring that the second movable frame 32 can drive the movable pliers 24 to move synchronously toward the side of the fixed pliers 25 to clamp and cut the cable.
[0036] In one embodiment, the blade end of the movable pliers 24 is provided with a limiting side plate 8 for limiting its sliding movement. By setting the limiting side plate 8, the retraction distance of the movable pliers 24 is limited, and the limiting sliding distance of the push plate 64 is limited, so that the rear end thereof will not completely slide out of the limiting cavity 63, thereby ensuring its stable limiting effect.
[0037] In one embodiment, in order to ensure that the first pressure plate 21 and the second pressure plate 22 first slide toward the wire support block 23 when the clamp handle 11 is pinched, second fixed plates 9 are respectively provided on the clamp body 1, and fourth springs 91 are provided between the second fixed plates 9, so that the fourth spring 91 provides a part of the force to pull the clamp body 1, and then when the clamp handle 11 is pinched, the clamp body 1 is limited by the tension of the fourth spring 91, so that it will not rotate and open first, but will make the first movable frame 3 and the second movable frame 32 drive the first pressure plate 21 and the second pressure plate 22 to move, and then cooperate with the wire support block 23 to clamp the cable. When the cable is clamped, the first movable frame 3 and the second movable frame 32 can no longer slide. At this time, continuing to pinch the clamp handle 11 will drive the two groups of clamp bodies 1 to open to both sides, so that the clamp heads 2 at their upper ends are opened away from each other.
[0038] The overall use process of the product is: first, place the cable between the first pressing plate 21, the second pressing plate 22 and the wire support block 23, and then pinch the clamp handle 11, the clamp handle 11 drives the first movable frame 3 and the second movable frame 32 to slide downward through the connecting rod 4, so that the first pressing plate 21 and the second pressing plate 22 press the cable on the wire support block 23 and clamp it, then continue to pinch the clamp handle 11, at this time the second movable frame 32 drives the movable pliers 24 to continue to move through the push plate 64 and the support plate 71, and then cooperates with the fixed pliers 25 to clamp and cut the cable insulation skin, while the movable pliers 24 moves, the rubber plate 66 at its rear end is driven by the push plate 64 The push plate 64 will be tilted and stretched downward, and the pulling force generated by its own deformation is not enough to drive the push plate 64 to slide, and the pulling force on the push plate 64 will be generated. At the same time, after the first pressure plate 21 and the second pressure plate 22 press the cable, it cannot continue to move forward. The clamp handle 11 will drive the clamp body 1 and the clamp head 2 at its upper end to have a tendency to separate laterally through the connecting rod 4, so that the first pressure plate 21 and the second pressure plate 22 cooperate with the wire support block 23 to pull the outer insulation skin of the cable laterally from both sides of the cutting port of the cable, and at the same time, the movable pliers 24 continues to extend and cut until it completely cuts off the cable insulation skin or is in a state of being about to be separated. At this time, the insulation skin can be completely cut off under the action of the lateral pulling force. The pliers head 2 is broken, and the pliers head 2 is opened. When the pliers head 2 is opened, the instantaneous force generated and the deflection of the relative angle between the push plate 64 and the rubber plate 66 will increase the axial force of the rubber plate 66 on the push plate 64. The increased axial force will overcome the friction between the support plate 71 and the movable pliers 24 and the push plate 64, and then drive the push plate 64 to slide. At the same time, the rear end of the push plate 64 drives the support plate 71 to slide in the opposite direction through the gear 7. At the same time, before the wedge surface 67 is engaged with the shaft rod 6, the support plate 71 and the movable pliers 24 have been separated. Then, when the shaft rod 6 is engaged with the shaft rod 6, the wedge surface 67 at its upper end will push the shaft rod 6 moves backward, thereby driving the movable pliers knife 24 to retract backward, so that it is separated from the fixed pliers knife 25 and stops cutting, and the third spring 52 will be stretched at the same time. When the pliers handle 11 is released, the movable pliers knife 24 is reset under the action of the third spring 52, and the pliers handle 11 is reset under the action of the first spring 12, so that the pliers head 2 is closed. When the pliers head 2 is closed, the rubber plate 66 will return to its original state, and then the push plate 64 can be pushed back to its initial position in the limit cavity 63. At the same time, the pliers handle 11 pushes the first movable frame 3 and the second movable frame 32 at the upper end of the pliers head 2 in the opposite direction through the connecting rod 4, so that the first pressing plate 21 and the second pressing plate 22 are reset.
[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.
Claims
1. A precision wire stripper, comprising two sets of mutually hinged clamp bodies (1), the two sets of clamp bodies (1) are respectively hinged with clamp handles (11), a first spring (12) is arranged between the clamp handles (11), and the characteristics are: A clamp head (2) is provided at one end of the clamp body (1) away from the clamp handle (11), and the clamp head (2) is provided with a first pressing plate (21) and a second pressing plate (22) which are respectively provided with the clamp head (2) and are limitedly slidable forward and backward relative to the clamp body (1), and a wire support block (23) which cooperates with the first pressing plate (21) and the second pressing plate (22) to clamp the cable is also provided on the clamp head (2); A movable pliers (24) that is limitedly slidable in the same direction as the second pressing plate (22) and a fixed pliers (25) that cooperates with the movable pliers (24) to clamp and cut the cable are arranged on the pliers head (2) provided with the second pressing plate (22), and the movable pliers (24) is arranged between the first pressing plate (21) and the second pressing plate (22); The rear end of the movable pliers (24) is provided with a blocking mechanism for controlling further cutting, and the blocking mechanism is triggered when the two groups of pliers heads (2) move away from each other.
2. The precision wire stripper according to claim 1, characterized in that: The first pressing plate (21) is provided with a first movable frame (3), the second pressing plate (22) is connected to the second movable frame (32) via a second spring (31), the first movable frame (3) and the second movable frame (32) are both provided with a limit slide groove (33), the pliers head (2) is provided with a first fixed plate (34), the first fixed plate (34) is provided with a limit rod (35) which is inserted into the limit slide groove (33) and is used to make the first movable frame (3) and the second movable frame (32) slide to a limit position on the pliers head (2).
3. The precision wire stripper according to claim 2, characterized in that: Connecting rods (4) are respectively hingedly arranged between the two groups of clamp handles (11) and the first movable frame (3) and the second movable frame (32), so that when the clamp handles (11) are pinched, the first movable frame (3) and the second movable frame (32) will slide towards the side of the wire supporting block (23) in a limited position.
4. The precision wire stripper according to claim 2 or 3, characterized in that: A limit plate (5) is arranged on the second movable frame (32), and a through groove (51) is provided on the limit plate (5) for the movable pliers (24) to slide within the limit plate, and a third spring (52) is also arranged between the limit plate (5) and the movable pliers (24), so that the limit plate (5) can be reset by the third spring (52) after the telescopic movement.
5. The precision wire stripper according to claim 4, characterized in that: A cylindrical shaft (6) is provided at the rear end of the movable pliers (24), and a movable gap (61) is formed between the shaft (6) and the movable pliers (24); the blocking mechanism comprises a limit frame (62) provided on the second movable frame (32), a push plate (64) which is limitedly slidable in a limit cavity (63) provided on the limit frame (62), a fixed block (65) fixed on the pliers head (2) provided with the first pressing plate (21), and an elastic rubber plate (66) which is hinged to the push plate (64) and the fixed block (65) at both ends; The push plate (64) is provided with a wedge-shaped surface (67) that matches the shaft rod (6), and the wedge-shaped surface (67) does not abut against the shaft rod (6) in an initial state.
6. The precision wire stripper according to claim 5, characterized in that: A gear (7) is rotatably arranged in the limiting cavity (63), and a support plate (71) is also arranged to limit the sliding movement in a direction parallel to the push plate (64), and the gear (7) is located between the push plate (64) and the support plate (71), and tooth surfaces (72) meshing with the gear (7) are arranged on opposite sides of the push plate (64) and the support plate (71); Under normal conditions, the support plate (71) abuts against the movable pliers (24) and the push plate (64) and has friction, so that when the push plate (64) moves toward the fixed pliers (25) following the movable pliers (24), the deformation of the rubber plate (66) will not cause it to slide in the limiting cavity (63).
7. The precision wire stripper according to claim 6, characterized in that: The blade end of the movable pliers (24) is provided with a limiting side plate (8) for limiting the sliding position of the movable pliers (24).
8. The precision wire stripper according to any one of claims 5 to 7, characterized in that: The pliers body (1) is respectively provided with a second fixing plate (9), and a fourth spring (91) is provided between the second fixing plates (9), so that the pliers handle (11) preferentially drives the first movable frame (3) and the second movable frame (32) to slide when engaged.