Copper-aluminum wiring terminal

Abstract

The utility model relates to a copper-aluminum wiring terminal. The technical problem to be solved by the utility model is to provide a copper-aluminum wiring terminal. According to the technical scheme, the wiring terminal comprises a main wiring terminal, an auxiliary wiring terminal and an external connecting plate, the main wiring terminal comprises a main terminal copper connecting part and a main terminal aluminum connecting part, and the main terminal copper connecting part and the main terminal aluminum connecting part each comprise a main terminal connecting column, a main terminal transition plate and a main terminal wiring plate. The main terminal wiring board is provided with a main terminal threaded hole; and the auxiliary wiring terminal comprises an auxiliary terminal copper connecting part and an auxiliary terminal aluminum connecting part. Compared with the prior art, the copper-aluminum wiring terminal has the advantages that the auxiliary wiring terminal is additionally arranged, the main terminal wiring board and the auxiliary terminal wiring board are connected through the external connection board butt joint holes in the external connection board and the bolts to form a stable connection structure, connection accuracy and reliability are enhanced, meanwhile, double contact surfaces of the external connection board are conductive, contact resistance is remarkably reduced, and the service life of the copper-aluminum wiring terminal is prolonged. Heat generation is reduced, safety is improved, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to a copper-aluminum terminal block. Background Technology

[0002] Terminal blocks are widely used in power distribution networks, such as for connecting incoming and outgoing lines of electrical equipment like transformers, circuit breakers, and disconnect switches. Copper-aluminum terminal blocks are typically used. Their main function is to achieve reliable connections between conductors of different materials. Due to the significant differences in physical properties between copper and aluminum (such as resistivity and coefficient of thermal expansion), direct connection can easily lead to decreased conductivity and poor contact. Therefore, copper-aluminum terminal blocks are widely used as transitional connectors. Traditional copper-aluminum terminal blocks only have main terminals and external plates, lacking auxiliary connection structures. In practical use, especially under vibration or external forces, the screw connection between the main terminals and the external plate is prone to loosening, leading to poor contact and lower stability and reliability. Furthermore, the lack of a transitional structure in traditional designs results in high contact resistance between copper and aluminum, reducing current transmission efficiency and generating heat, thus decreasing the safety and lifespan of the copper-aluminum terminal blocks. Improvements and optimizations are therefore proposed to address these issues. Utility Model Content

[0003] To solve the above problems, the technical problem to be solved by this utility model is to provide a copper-aluminum terminal block.

[0004] The technical solution adopted by the copper-aluminum terminal block of this utility model is characterized by including a main terminal block, an auxiliary terminal block and an external plate. The main terminal block includes a main terminal copper part and a main terminal aluminum part. Both the main terminal copper part and the main terminal aluminum part include a main terminal connecting post, a main terminal transition plate and a main terminal wiring plate welded together. The main terminal wiring plate is provided with a main terminal threaded hole.

[0005] The auxiliary terminal block includes an auxiliary terminal copper connection corresponding to the main terminal copper connection and an auxiliary terminal aluminum connection corresponding to the main terminal aluminum connection. Both the auxiliary terminal copper connection and the auxiliary terminal aluminum connection include an auxiliary terminal connecting plate, an auxiliary terminal transition plate, and an auxiliary terminal wiring plate welded together. The auxiliary terminal wiring plate has an auxiliary terminal threaded hole. The external plate is placed between the main terminal wiring plate and the auxiliary terminal wiring plate. The external plate has an external plate mating hole. The main terminal threaded hole, the external plate mating hole, and the auxiliary terminal threaded hole are connected together by bolts.

[0006] One end of the main terminal block is bent vertically to form the main terminal transition plate, and the main terminal transition plate is provided with the main terminal connecting post on the outside. One end of the auxiliary terminal block is bent vertically to form the auxiliary terminal transition plate, and the auxiliary terminal transition plate is bent vertically to form the auxiliary terminal connecting plate.

[0007] The auxiliary terminal block has an auxiliary terminal block protrusion at its end, the main terminal block has a main terminal block recess at its end, and the outer plate has an outer plate limiting opening. The auxiliary terminal block protrusion passes through the outer plate limiting opening and then connects with the main terminal block recess.

[0008] The upper end of the main terminal transition plate is provided with a main terminal transition plate protrusion, and the auxiliary terminal connecting plate is provided with an auxiliary terminal connecting plate opening that is connected to the main terminal transition plate protrusion.

[0009] The main terminal transition plate and the auxiliary terminal transition plate are attached to each other. The main terminal transition plate is provided with a waist-shaped hole, and the auxiliary terminal transition plate is provided with a locking hole. The waist-shaped hole of the main terminal transition plate and the locking hole of the auxiliary terminal transition plate are connected by screws.

[0010] The main terminal block recess and the auxiliary terminal block protrusion each have three recesses.

[0011] The advantages of this copper-aluminum terminal block are as follows: the addition of an auxiliary terminal block, the connection between the main terminal block and the auxiliary terminal block through the mating holes on the outer plate and bolts, forming a stable connection structure, which enhances the accuracy and reliability of the connection. At the same time, the double contact surfaces of the outer plate are conductive, the contact resistance is significantly reduced, the current transmission efficiency is improved, the heat generation is reduced, and the safety and service life are improved. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is an exploded view of the copper-aluminum terminal block of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the main wiring terminal of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the copper connector of the main terminal of this utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the auxiliary wiring terminal of this utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the auxiliary terminal copper connector of this utility model;

[0018] Figure 6 This is a structural schematic diagram of the outer plate of this utility model. Detailed Implementation

[0019] like Figure 1-6As shown, the copper-aluminum terminal block of this utility model includes a main terminal block 1, an auxiliary terminal block 2, and an external plate 3. The main terminal block 1 includes a main terminal copper connector 6 and a main terminal aluminum connector 7. Both the main terminal copper connector 6 and the main terminal aluminum connector 7 include a main terminal connecting post 10, a main terminal transition plate 9, and a main terminal wiring plate 8 welded together. The main terminal wiring plate 8 is provided with a main terminal threaded hole 11. The auxiliary terminal block 2 includes an auxiliary terminal copper connector 13 corresponding to the main terminal copper connector 6 and an auxiliary terminal aluminum connector 14 corresponding to the main terminal aluminum connector 7. Both the auxiliary terminal copper connector 13 and the auxiliary terminal aluminum connector 14 include an auxiliary terminal connecting plate 18, an auxiliary terminal transition plate 17, and an auxiliary terminal connecting plate 18 welded together. An auxiliary terminal block 16 is provided, which has an auxiliary terminal threaded hole 19. An external plate 3 is placed between the main terminal block 8 and the auxiliary terminal block 16. The external plate 3 has an external plate mating hole 20. The main terminal threaded hole 11, the external plate mating hole 20 and the auxiliary terminal threaded hole 19 are connected together by bolts. An auxiliary terminal 2 is added. The main terminal block 8 and the auxiliary terminal block 16 are connected through the external plate mating hole 20 on the external plate 3 and bolts to form a stable connection structure, which enhances the accuracy and reliability of the connection. At the same time, the external plate 3 has double contact surfaces that are conductive, which significantly reduces the contact resistance, improves the current transmission efficiency, reduces heat generation, and improves safety and service life.

[0020] One end of the main terminal block 8 is bent vertically to form the main terminal transition plate 9. The main terminal transition plate 9 has a main terminal connecting post 10 on its outer side. One end of the auxiliary terminal block 16 is bent vertically to form the auxiliary terminal transition plate 17. The auxiliary terminal transition plate 17 is bent vertically to form the auxiliary terminal connecting plate 18.

[0021] The auxiliary terminal block 16 has an auxiliary terminal block protrusion 22 at its end, the main terminal block 8 has a main terminal block recess 24 at its end, and the outer plate 3 has an outer plate limiting port 23. The auxiliary terminal block protrusion 22 passes through the outer plate limiting port 23 and then mates with the main terminal block recess 24, so that the main terminal block 1, the auxiliary terminal block 2 and the outer plate 3 are integrated, effectively preventing screw loosening and poor contact caused by vibration or external force, and improving the stability of use.

[0022] The main terminal transition plate 9 has a main terminal transition plate protrusion 26 on its upper end, and the auxiliary terminal connecting plate 18 has an auxiliary terminal connecting plate opening 27 that is opposite to the main terminal transition plate protrusion 26, further enhancing the connection reliability of the main terminal 1 and the auxiliary terminal 2.

[0023] The main terminal transition plate 9 and the auxiliary terminal transition plate 17 are attached to each other. The main terminal transition plate 9 is provided with a waist-shaped hole 30, and the auxiliary terminal transition plate 17 is provided with a locking hole 31. The waist-shaped hole 30 and the locking hole 31 are connected by screws to provide lateral locking force and support the connection at the external board mating hole 20, making the overall structure more stable and effectively preventing loosening caused by vibration or external force, and ensuring good contact.

[0024] The main terminal block recess 24 and the auxiliary terminal block protrusion 22 each have three recesses, allowing the external board 3 to be connected to the main terminal block 1 and the auxiliary terminal block 2 at multiple angles, thus increasing flexibility.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model are included within the protection scope of the present utility model.

Claims

1. A copper-aluminum terminal block, characterized in that: It includes a main terminal block (1), an auxiliary terminal block (2) and an external board (3). The main terminal block (1) includes a main terminal copper connection part (6) and a main terminal aluminum connection part (7). Both the main terminal copper connection part (6) and the main terminal aluminum connection part (7) include a main terminal connecting post (10), a main terminal transition plate (9) and a main terminal wiring board (8) welded together. The main terminal wiring board (8) is provided with a main terminal threaded hole (11). The auxiliary terminal block (2) includes an auxiliary terminal copper connection part (13) corresponding to the main terminal copper connection part (6) and an auxiliary terminal aluminum connection part (14) corresponding to the main terminal aluminum connection part (7). The auxiliary terminal copper connection part (13) and the auxiliary terminal aluminum connection part (14) each include an auxiliary terminal connecting plate (18), an auxiliary terminal transition plate (17) and an auxiliary terminal wiring plate (16) welded together. The auxiliary terminal wiring plate (16) is provided with an auxiliary terminal threaded hole (19). The external plate (3) is placed between the main terminal wiring plate (8) and the auxiliary terminal wiring plate (16). The external plate (3) is provided with an external plate mating hole (20). The main terminal threaded hole (11), the external plate mating hole (20) and the auxiliary terminal threaded hole (19) are connected together by bolts.

2. The copper-aluminum terminal block according to claim 1, characterized in that: One end of the main terminal block (8) is bent vertically to form the main terminal transition plate (9), and the main terminal connecting post (10) is provided on the outside of the main terminal transition plate (9). One end of the auxiliary terminal block (16) is bent vertically to form the auxiliary terminal transition plate (17), and the auxiliary terminal transition plate (17) is bent vertically to form the auxiliary terminal connecting plate (18).

3. The copper-aluminum terminal block according to claim 2, characterized in that: The auxiliary terminal block (16) has an auxiliary terminal block protrusion (22) at its end, the main terminal block (8) has a main terminal block recess (24) at its end, the external plate (3) has an external plate limiting port (23), and the auxiliary terminal block protrusion (22) passes through the external plate limiting port (23) and then connects with the main terminal block recess (24).

4. The copper-aluminum terminal block according to claim 2, characterized in that: The main terminal transition plate (9) has a main terminal transition plate protrusion (26) at its upper end, and the auxiliary terminal connecting plate (18) has an auxiliary terminal connecting plate opening (27) that is connected to the main terminal transition plate protrusion (26).

5. The copper-aluminum terminal block according to claim 2, characterized in that: The main terminal transition plate (9) is attached to the auxiliary terminal transition plate (17). The main terminal transition plate (9) is provided with a waist-shaped hole (30), and the auxiliary terminal transition plate (17) is provided with a locking hole (31). The waist-shaped hole (30) and the locking hole (31) are connected by screws.

6. The copper-aluminum terminal block according to claim 3, characterized in that: The number of the main terminal block recess (24) and the auxiliary terminal block protrusion (22) are both 3.

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