Crimping pliers for thermal protector production

Abstract

The utility model relates to the field of crimping pliers, and discloses a crimping plier for thermal protector production, which comprises a first handle, an upper plier head is mounted at the front end of the first handle, a lower plier head is rotatably mounted on the upper plier head through a shaft pin, a second handle is fixed at the rear end of the lower plier head, and a tension spring is arranged between the lower plier head and the first handle. An upper wire pressing part is installed at the lower end of the upper plier head through a screw, an upper blade is further arranged at the front end of the lower end of the upper plier head, a lower wire pressing part is installed at the upper end of the lower plier head through a screw, and a lower blade is arranged at the front end of the upper portion of the lower plier head. The crimping pliers have three functions of wire cutting, wire stripping and wire pressing at the same time, the bolt, the linkage rod and the sliding block are arranged in a matched mode, the depth of the crimping pliers cutting into a cable can be controlled in the wire stripping process, and then cable breakage caused by too large force of the crimping pliers is prevented.

Description

Technical Field

[0001] The utility model relates to the field of wire crimping pliers, in particular to a wire crimping pliers used for producing thermal protectors. Background Art

[0002] A thermal protector is a temperature controller with a temperature-sensing element, which can ensure that the equipment does not suffer damage due to overheating. During the production process, the wires need to be connected to the metal sheet in the thermal protector through a crystal plug. When the electrical connection is made in the crystal plug, a crimping pliers needs to be used to crimp the wires. Different crystal plugs have different shapes, and crimping pliers with different crimping teeth are also required. A crimping pliers with a replaceable clamp head is disclosed in the Chinese utility model patent with the announcement number CN211579161U. The clamp head is divided into a fixed part and a movable crimping part, and the movable crimping part is movably and detachably arranged on the fixed part. The clamp head can be replaced separately, and the operator only needs to carry the movable crimping part with different crimping teeth to adapt to different situations. Before inserting the cable end into the RJ45 connector for crimping, the wire head needs to be stripped to expose the copper wire and allow it to be placed inside the RJ45 connector. This type of crimping pliers only has the function of crimping, and in actual use, another pair of pliers is needed to strip the wire. This means that two tools need to be used alternately when crimping, making the operation more complicated and requiring more equipment to carry. To this end, we designed a crimping plier for thermal protector production. Utility Model Content

[0003] In order to solve the technical problem that this type of crimping pliers only has the function of crimping wires and other wire pliers are needed to perform wire stripping operations during actual use, the utility model provides a crimping pliers for the production of thermal protectors.

[0004] The utility model is implemented by the following technical solution: a wire crimping pliers for the production of thermal protectors, comprising a handshake, an upper clamp head is installed at the front end of the handshake, a lower clamp head is rotatably installed on the upper clamp head through an axle pin, a handshake second is fixed to the rear end of the lower clamp head, a tension spring is provided between the lower clamp head and the handshake, an upper wire crimping part is screwed on the lower end of the upper clamp head, and an upper blade is also provided on the lower front end of the upper clamp head, a lower wire crimping part is screwed on the upper end of the lower clamp head, and a lower blade is provided on the upper front end of the lower clamp head;

[0005] A movable groove is provided inside the handshake, the front side of which passes through the handshake and is connected to the outside. The bottom end of the movable groove is recessed downward to form an arc-shaped groove. A sliding block is provided in the arc-shaped groove. The cross section of the sliding block is an arc-shaped structure.

[0006] A linkage rod is rotatably mounted on the inner side of the second handshake via an axle pin, the other end of the linkage rod extends into the movable groove, and the inner end of the linkage rod is movably connected to the sliding block via an axle pin. When the second handshake is pressed, the inner end of the linkage rod moves inward along the movable groove, and the sliding groove is provided to guide the linkage rod;

[0007] A threaded hole is provided at the tail end of the handshake one, and the threaded hole is connected to the arc groove. A bolt is connected to the threaded hole, and the inner end of the bolt extends into the arc groove. The threaded hole and the axis pin are colinear with the axis pin of the arc groove. By rotating the bolt, the length of the bolt extending into the arc groove can be changed, which can block part of the arc groove, thereby limiting the distance that the sliding block moves backward. In this way, the pressing degree of the handshake two can be changed, thereby limiting the pressing degree of the lower blade and the upper blade, and preventing the user from using too much force and causing the cable to be cut when stripping the wire.

[0008] As a further improvement of the above solution, the upper blade and the lower blade are staggered, and the staggered upper and lower blades can completely cut the cable, so that it has the dual functions of cutting or stripping the wire, and the lower pliers head is located directly below the upper pliers head.

[0009] As a further improvement of the above scheme, a fixing block 1 is respectively provided on the lower rear side of the upper pliers head and the upper rear side of the lower pliers head, and screw holes are opened on the fixing block 1. The upper and lower pressing parts are fixed to the corresponding fixing block 1 by screws, which is convenient for the installation and disassembly of the upper and lower pliers heads, and further convenient for replacing different upper and lower pressing parts according to actual conditions. They can be replaced separately, which reduces costs and is easy to carry.

[0010] As a further improvement of the above solution, a fixing block 2 is respectively provided on the front side below the upper pliers head and the front side above the lower pliers head. Screw holes are provided on the fixing block 2, and the upper blade and the lower blade are fixed to the corresponding fixing block 2 by screws. The upper blade and the lower blade suffer greater wear during shearing and stripping, and are set to a detachable structure to facilitate replacement of the upper blade and the lower blade, thereby reducing costs.

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

[0012] 1. The utility model provides an upper blade and a lower blade on the upper and lower clamp heads respectively, so that the crimping pliers can simultaneously perform the three functions of cutting, stripping and crimping wires. The provided bolts, linkage rods and sliding blocks can control the depth of the cutting into the cable when stripping the wire, thereby preventing the cable from being broken due to excessive force.

[0013] 2. By arranging fixed block 1 and fixed block 2 on the upper clamp head and the lower clamp head respectively, the upper and lower wire pressing parts are installed through fixed block 1, and the upper and lower blades are installed through fixed block 2, so that the upper and lower wire pressing parts as well as the upper and lower blades can be replaced separately as needed, thereby improving convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a wire crimping pliers for producing thermal protectors provided by the utility model;

[0015] Figure 2 for Figure 1 Schematic diagram of the rear side;

[0016] Figure 3 for Figure 2 A partial cross-sectional view of the middle handshake;

[0017] Figure 4 for Figure 3 Schematic diagram of the structure without bolts installed.

[0018] Description of main symbols:

[0019] 1. Handle 1; 11. Arc groove; 12. Threaded hole; 2. Handle 2; 3. Upper clamp head; 4. Lower clamp head; 41. Tension spring; 5. Linkage rod; 51. Sliding block; 6. Lower press part; 61. Upper press part; 7. Upper blade; 71. Lower blade; 8. Fixing block 1; 81. Fixing block 2; 9. Bolt. DETAILED DESCRIPTION

[0020] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0021] Example:

[0022] Please combine Figure 1-Figure 4 , a wire crimping pliers for the production of thermal protectors of this embodiment includes a handshake 1, an upper clamp head 3 is installed at the front end of the handshake 1, the upper clamp head 3 is rotatably installed with a lower clamp head 4 through an axle pin, a handshake 2 is fixed to the rear end of the lower clamp head 4, a tension spring 41 is provided between the lower clamp head 4 and the handshake 1, an upper wire crimping portion 61 is screwed on the lower end of the upper clamp head 3, and an upper blade 7 is also provided on the lower end front end of the upper clamp head 3, a lower wire crimping portion 6 is screwed on the upper end of the lower clamp head 4, and a lower blade 71 is provided on the upper front end of the lower clamp head 4;

[0023] A movable groove is provided inside the handshake 1. The front side of the movable groove passes through the handshake 1 and is connected to the outside. The bottom end of the movable groove is recessed downward to form an arc-shaped groove 11. A sliding block 51 is provided in the arc-shaped groove 11. The cross section of the sliding block 51 is an arc-shaped structure.

[0024] A linkage rod 5 is rotatably mounted on the inner side of the second handshake 2 via an axle pin. The other end of the linkage rod 5 extends into the movable groove, and the inner end of the linkage rod 5 is movably connected to the sliding block 51 via an axle pin. When the second handshake 2 is pressed, the inner end of the linkage rod 5 moves inward along the movable groove. The sliding groove is provided to guide the linkage rod 5.

[0025] A threaded hole 12 is provided at the tail end of the handshake 1, and the threaded hole 12 is connected to the arc groove 11. A bolt 9 is connected to the inner thread of the threaded hole 12, and the inner end of the bolt 9 extends into the arc groove 11. The threaded hole 12 and the axis pin are colinear with the axis pin of the arc groove 11. By rotating the bolt 9, the length of the bolt 9 extending into the arc groove 11 can be changed, which can block part of the arc groove 11, thereby limiting the distance that the sliding block 51 moves backward. In this way, the degree of pressing of the handshake 2 can be changed, thereby limiting the degree of pressing between the lower blade 71 and the upper blade 7, and preventing the user from using too much force and causing the cable to be cut when stripping the wire.

[0026] The upper blade 7 and the lower blade 71 are staggered, and the staggered upper blade 7 and the lower blade 71 can completely cut the cable, so that it has the dual functions of cutting or stripping the wire. The lower clamp head 4 is located directly below the upper clamp head 3.

[0027] A fixing block 8 is respectively provided on the lower rear side of the upper pliers head 3 and the upper rear side of the lower pliers head 4. Screw holes are provided on the fixing block 8. The upper pressing part 61 and the lower pressing part 6 are fixed to the corresponding fixing block 8 by screws, which is convenient for the installation and disassembly of the upper pliers head 3 and the lower pliers head 4, and then convenient for replacing different upper pressing parts 61 and lower pressing parts 6 according to actual conditions. They can be replaced separately, which reduces costs and is easy to carry.

[0028] A fixing block 2 81 is respectively provided on the front side below the upper clamp head 3 and the front side above the lower clamp head 4. Screw holes are provided on the fixing block 2 81. The upper blade 7 and the lower blade 71 are fixed to the corresponding fixing block 2 81 by screws. The upper blade 7 and the lower blade 71 wear more when cutting and stripping the wire. They are set to a detachable structure to facilitate the replacement of the upper blade 7 and the lower blade 71, thereby reducing costs.

[0029] The implementation principle of a wire crimping pliers for the production of thermal protectors in the embodiment of the present application is as follows: in actual use, the wire end is placed between the upper blade 7 and the lower blade 71, and the handshake 1 and the handshake 2 are pressed to make the upper blade 7 and the lower blade 71 move toward each other, so that they can cut into the outer skin of the wire, and the wire skin can be pulled outward to strip the wire. In the process of stripping, the bolt 9 can be rotated to change the length of the bolt 9 extending into the inside of the arc groove 11, which can block part of the arc groove 11, thereby making the sliding block 51 move toward The distance of the rear movement is limited, so that the pressing degree of the handshake 2 can be changed, thereby limiting the pressing degree of the lower blade 71 and the upper blade 7, which can prevent the user from using too much force to cut the cable when stripping the wire. Then, it is inserted into the crystal plug of the thermal protector, and the crystal plug is placed between the lower wire pressing part 6 and the upper wire pressing part 61. The handshake 1 and the handshake 2 are pressed again to perform the wire pressing operation, and the upper blade 7, the lower blade 71, the lower wire pressing part 6 and the upper wire pressing part 61 can all be replaced separately;

[0030] By providing an upper blade 7 and a lower blade 71 on the upper clamp head 3 and the lower clamp head 4 respectively, the crimping pliers can simultaneously perform the three functions of cutting, stripping and crimping the wires. In combination with the provided bolt 9, linkage rod 5 and sliding block 51, the depth of the cutting into the cable can be controlled during stripping, thereby preventing the cable from being broken due to excessive force.

[0031] By respectively arranging a fixing block 1 8 and a fixing block 2 81 on the upper pliers head 3 and the lower pliers head 4, the upper wire pressing part 61 and the lower wire pressing part 6 are installed through the fixing block 1 8, and the upper blade 7 and the lower blade 71 are installed through the fixing block 2 81, so that the upper wire pressing part 61 and the lower wire pressing part 6 as well as the upper blade 7 and the lower blade 71 can be replaced separately as needed, thereby improving convenience.

[0032] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A wire crimping pliers for producing thermal protectors, comprising a handshake (1), an upper clamp head (3) being mounted on the front end of the handshake (1), a lower clamp head (4) being rotatably mounted on the upper clamp head (3) via an axle pin, a handshake (2) being fixed on the rear end of the lower clamp head (4), a tension spring (41) being arranged between the lower clamp head (4) and the handshake (1), and characterized in that: The upper end of the upper pliers head (3) is screwed with an upper wire pressing portion (61), and the lower front end of the upper pliers head (3) is also provided with an upper blade (7); the upper end of the lower pliers head (4) is screwed with a lower wire pressing portion (6), and the upper front end of the lower pliers head (4) is provided with a lower blade (71); A movable groove is provided inside the handshake (1), the front side of the movable groove passes through the handshake (1) and is connected to the outside, the bottom end of the movable groove is recessed downward to form an arc-shaped groove (11), a sliding block (51) is provided in the arc-shaped groove (11), and the cross section of the sliding block (51) is an arc-shaped structure; A linkage rod (5) is rotatably mounted on the inner side of the handshake (2) via an axle pin, the other end of the linkage rod (5) extends into the movable groove, and the inner end of the linkage rod (5) is movably connected to the sliding block (51) via an axle pin; A threaded hole (12) is provided at the tail end of the handshake (1), and the threaded hole (12) is connected to the arc groove (11). A bolt (9) is connected to the inner thread of the threaded hole (12), and the inner end of the bolt (9) is inserted into the arc groove (11). The threaded hole (12) and the axle pin are colinear with the axle pin of the arc groove (11).

2. A crimping pliers for thermal protector production according to claim 1, characterized in that: The upper blade (7) and the lower blade (71) are designed to be staggered, and the lower clamp head (4) is located directly below the upper clamp head (3).

3. The crimping pliers for thermal protector production according to claim 1, characterized in that: A fixing block (8) is provided on the lower rear side of the upper clamp head (3) and the upper rear side of the lower clamp head (4), respectively. Screw holes are provided on the fixing block (8), and the upper pressing part (61) and the lower pressing part (6) are fixed to the corresponding fixing block (8) by screws.

4. The crimping pliers for thermal protector production according to claim 1, characterized in that: A second fixing block (81) is provided on the lower front side of the upper clamp head (3) and the upper front side of the lower clamp head (4), respectively. Screw holes are provided on the second fixing block (81), and the upper blade (7) and the lower blade (71) are fixed to the corresponding second fixing block (81) by screws.

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