Welding machine power supply terminal

Abstract

The utility model discloses a welding machine power supply terminal, which comprises a joint part and a crimping part, the joint part is provided with a mounting hole, one end of the crimping part is axially provided with a cavity, one end, far away from the cavity, of the crimping part is fixedly connected with the joint part, and the cavity is provided with a locking assembly for circumferentially limiting and locking a cable; the locking assembly is designed in the cavity of the crimping part of the terminal, when the terminal is used, the crimping part is axially stressed and compressed, so that the locking assembly enters the cable, the locking assembly plays a role in reinforcing and fixing the cable while the crimping part is stressed to lock the cable, the anti-pulling performance of the terminal after installation is improved, the possibility of loosening after the terminal is installed is avoided, and the service life of the terminal is prolonged. The safety performance is greatly improved, the contact area with a cable is increased, and the signal transmission capability of the terminal is enhanced to a certain extent.

Description

Technical Field

[0001] The present application relates to the technical field of welding machine transformers, and in particular to a welding machine power supply terminal. Background Art

[0002] At present, in the field of electric welding machine manufacturing, most welding machine power supplies exist as an independent device, and the tap connection of the welding machine isolation transformer uses crimped aluminum terminals.

[0003] In order to reduce costs, the transformer for electric welding machines is changed from copper wire to aluminum wire winding, and the tap uses lower-cost aluminum terminals to crimp the aluminum wire for connection. The texture of aluminum wire is relatively hard, and it is difficult to ensure the crimping strength of the route structure when using traditional open and close terminals. It is easy to loosen, resulting in poor contact at the connection. How to make a terminal that can effectively connect aluminum wire cables is a problem that technicians need to solve. Utility Model Content

[0004] The purpose of the present application is to provide a welding machine power supply terminal to solve the problem that the conventional terminal in the prior art has insufficient connection strength and the interface becomes loose from time to time during use, resulting in poor contact of the wire end interface.

[0005] In order to solve the above technical problems, this application is implemented by adopting the following technical solutions:

[0006] A welding machine power terminal comprises a joint part and a crimping part, wherein the joint part is provided with a mounting hole, a cavity is axially opened at one end of the crimping part, and an end of the crimping part away from the cavity is fixedly connected to the joint part, and the cavity is provided with a locking assembly for circumferentially limiting and locking the cable.

[0007] According to a further solution of the present application, one end of the crimping portion away from the cavity and the joint portion bracket are fixed by staggered welding of a connecting piece.

[0008] In a further solution, a reinforcement ring is integrally provided circumferentially on one end of the crimping portion close to the joint portion.

[0009] According to a further solution of the present application, the locking assembly includes at least two first locking members, and a plurality of the first locking members are integrally mounted on the side wall of the cavity.

[0010] In a further embodiment, one end of the plurality of first locking members away from the cavity points toward the center line of the cavity.

[0011] In a further solution, the length of the first locking member is not shorter than the length of the cavity.

[0012] In a further embodiment, the locking assembly further comprises a plurality of second locking members;

[0013] Each of the second locking members is integrally mounted on the side wall of the cavity between adjacent first locking members.

[0014] Preferably, the plurality of first locking members and second locking members are radially arranged on the side wall of the cavity. This arrangement can effectively and comprehensively ensure the force balance of the cable and improve the use effect of the terminal to a certain extent.

[0015] Wherein, the length of the first locking piece along the radial direction of the cavity is greater than the radial length of the second locking piece along the radial direction of the cavity.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In the present application, a locking assembly is designed in the cavity of the crimping part of the terminal. When in use, the crimping part is compressed in the circumferential direction, causing the locking assembly to enter the cable. While the crimping part is forced to lock the cable, the locking assembly plays a role in strengthening the fixation of the cable, thereby improving the pull-out resistance of the terminal after installation, eliminating the possibility of loosening of the terminal after installation, greatly improving the safety performance, increasing the contact area with the cable, and enhancing the signal transmission capacity of the terminal to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of Example 1 of the present application;

[0019] Figure 2 This is a structural schematic diagram of a perspective of Example 2 of the present application;

[0020] Figure 3 This is a structural schematic diagram of another perspective of Embodiment 2 of the present application;

[0021] Figure 4 This is a schematic diagram of the locking assembly structure according to Embodiment 2 of the present application;

[0022] Among them, 1 is a joint part, 2 is a crimping part, 3 is a locking assembly, 4 is a connecting piece, 5 is a reinforcing ring, 6 is a cavity, 31 is a first locking piece, and 32 is a second locking piece. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Example 1

[0024] Reference Figure 1In this embodiment, a welding machine power terminal is disclosed, which includes a joint part 1 and a crimping part 2. The joint part 1 is provided with a mounting hole, a cavity 6 is axially opened at one end of the crimping part 2, and the end of the crimping part 2 away from the cavity is fixedly connected to the joint part 1.

[0025] The end of the crimping part 2 away from the cavity and the bracket of the joint part 1 are fixed by offset welding through the connecting piece 4. At the same time, the crimping part 2 and the joint part 1 can also be stamped and offset into shape as a whole. In production, most companies still prefer the latter, which has a simple process and high strength of the manufactured product; the joint part 1 and the crimping part 2 are offset so that the two are not in the same plane. When the joint part 1 is connected to equipment such as the transformer joint, the operational interference caused by the crimping part 2 is reduced during the process, thereby improving the connection efficiency.

[0026] A reinforcing ring 5 is integrally provided in the circumferential direction at one end of the crimping portion 2 close to the joint portion 1 , and a slope is provided on the reinforcing ring 5 and the tubular portion of the crimping portion 2 .

[0027] The terminal in this embodiment avoids the use of the traditional open-type crimping part 2 and uses a tubular type instead. In order to reduce costs, the welding machine power transformer is wound with aluminum wire, and the tap adopts a lower-cost aluminum terminal design. The terminal connector part 1 is formed by die forging and punching of pure aluminum rods, and the crimping part 2 is drilled by machining. The drilled end is crimped with the aluminum wire by equipment for effective connection. The aluminum wire enters the tube cavity 6 and the crimping part 2 is circumferentially compressed using a crimping pliers. Example 2

[0028] Reference Figure 2 and 3 In this embodiment, another welding machine power terminal is disclosed, which is improved compared with the previous embodiment. A locking assembly 3 is installed in the cavity 6 for circumferentially limiting and locking the cable.

[0029] The locking assembly 3 in Example 2 is described in detail below with reference to the accompanying drawings;

[0030] Reference Figures 2 to 4 The locking assembly 3 in this embodiment includes 6 first locking members 31 and second locking members 32. The 6 first locking members 31 are integrally mounted on the side wall of the cavity 6. The cross section of the end of the first locking member 31 is triangular. The width of the first locking member 31 near the center of the cavity 6 is narrower, making it easier to penetrate the rubber layer of the cable. The second locking member 32 is correspondingly arranged on the side wall of the cavity 6 between adjacent first locking members 31. Here, one-piece molding is also used to reduce the manufacturing process and enhance the structural strength of the device. It should be noted that the cross section of the end of the second locking member 32 in this embodiment is arc-shaped, and the length of the first locking member 31 along the radial direction of the cavity is not shorter than the length of the second locking member 32 along the radial direction of the cavity.

[0031] When the first locking member 31 tightens the cable, the cable is squeezed into the area between adjacent first locking members 31. At this time, the second locking member 32 also has a retracting action to squeeze and fix the cable in this area, thereby ensuring the connection strength and increasing the contact area between the cable and the terminal, thereby improving the use effect.

[0032] Some other embodiments limit the first locking member 31 and the second locking member 32, where one end of the first locking member 31 away from the cavity 6 points to the center line of the cavity 6, and the first locking member 31 and the second locking member 32 are radially arranged on the side wall of the cavity 6. This design ensures that when the first locking member 31 and the second locking member 32 act on the cable, the force on the cable is more balanced, thereby preventing unnecessary damage to the cable.

[0033] In specific use, the cable end is stripped to expose the wire core, and the wire core is sent into the cavity 6 of the crimping part 2. At this time, the crimping part 2 is placed in the crimping device, which can use crimping molds with six sides and four sides of the inner cavity. When the crimping device is working, the crimping part 2 drives the first locking member 31 and the second locking member 32 to tighten and clamp the cable, thereby improving the clamping effect and preventing loosening; the through hole on the connector part 1 is locked at the transformer connector with bolts; in addition, the protruding structure of the first locking member 31 and the second locking member 32 increases the contact area between the terminal and the line, thereby improving the terminal electrical signal transmission efficiency.

[0034] It is known from common technical knowledge that the present application can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present application or within the scope equivalent to the present application are included in the present application.

Claims

1. A welding machine power terminal, characterized in that: The invention comprises a joint part (1) and a crimping part (2), wherein the joint part (1) is provided with a mounting hole, a cavity (6) is axially opened at one end of the crimping part (2), and an end of the crimping part (2) away from the cavity is fixedly connected to the joint part (1), and the cavity (6) is provided with a locking assembly (3) for circumferentially limiting and locking the cable.

2. A welding machine power supply terminal according to claim 1, characterized in that: The end of the crimping portion (2) away from the cavity and the bracket of the joint portion (1) are fixed by staggered welding via a connecting piece (4).

3. A welding machine power supply terminal according to claim 2, characterized in that: A reinforcement ring (5) is integrally provided in the circumferential direction at one end of the crimping portion (2) close to the joint portion (1).

4. A welding machine power supply terminal according to claim 1, characterized in that: The locking assembly (3) comprises at least two first locking members (31), and a plurality of the first locking members (31) are integrally mounted on a side wall of the cavity (6).

5. A welding machine power supply terminal according to claim 4, characterized in that: One end of the plurality of first locking members (31) away from the cavity (6) points towards the centre line of the cavity (6).

6. A welding machine power supply terminal according to claim 5, characterized in that: The length of the first locking member (31) is not shorter than the length of the cavity (6).

7. A welding machine power supply terminal according to claim 4, characterized in that: The locking assembly (3) further comprises a plurality of second locking members (32); Each of the second locking members (32) is integrally mounted on a side wall of the cavity (6) between adjacent first locking members (31).

8. A welding machine power supply terminal according to claim 4, characterized in that: A plurality of the first locking members (31) and the second locking members (32) are radially arranged on the side wall of the cavity (6).

9. A welding machine power supply terminal according to claim 7 or 8, characterized in that: The length of the first locking piece (31) along the radial direction of the cavity (6) is greater than the radial length of the second locking piece (32) along the radial direction of the cavity (6).

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