Composite rivet movable contact assembly

Abstract

The utility model relates to a composite rivet movable contact assembly. The technical problem to be solved by the utility model is to provide a composite rivet movable contact assembly. According to the technical scheme, the movable contact comprises a movable contact plate and a movable contact, the movable contact comprises a movable contact copper body and a movable contact silver-coated layer, the movable contact copper body comprises a cylinder bearing part and a cylinder riveting column, the movable contact plate comprises a movable contact plate middle connecting part, the two ends of the movable contact plate middle connecting part are bent in sequence to form movable contact plate butt joint parts, and the movable contact plate butt joint parts are connected with the cylinder bearing part. The movable contact plate butt joint part is provided with a movable contact plate limiting seat, and the movable contact plate limiting seat is internally provided with a limiting seat bearing groove. The utility model has the advantages that the bottom structure of the barrel riveting column is matched with the structure of the movable contact plate limiting seat, so that the barrel riveting column is easier to rivet, the contact surface after riveting is smoother and more balanced, the riveting pressure is reliable and not easy to fall off under the condition that the riveting pressure of the contact surface is not damaged, the riveting pressure structure is firm and stable, the riveting pressure effect is good, and the service life of the product is prolonged.

Description

Technical Field

[0001] This utility model relates to a composite rivet moving contact assembly. Background Technology

[0002] Traditional circuit breakers or contactors typically include moving contact assemblies and stationary contact assemblies for reliable circuit connection and disconnection. Existing composite riveted moving contact assemblies consist of a moving contact plate and a moving contact, connected by riveting. However, in actual production, it has been found that the riveting effect is not ideal. Excessive riveting force, while providing a strong connection, can easily damage the contact points of the moving contact plate and the moving contact, leading to increased product temperature and a shorter service life. Conversely, insufficient riveting force results in an excessively small riveting cross-section for the moving contact, making it prone to detachment during operation and causing poor riveting stability and reliability. Therefore, improvements and optimizations are 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 composite rivet moving contact assembly.

[0004] The technical solution adopted by the composite rivet moving contact assembly of this utility model is as follows: It includes a moving contact plate and moving contacts riveted to the moving contact plate. The moving contact includes a moving contact copper body and a moving contact silver-plated layer disposed on the moving contact copper body. The moving contact copper body includes a cylindrical receiving portion and a cylindrical riveting post disposed at the bottom of the cylindrical receiving portion. The moving contact plate is characterized by having a central connecting portion, with both ends of the central connecting portion bent sequentially to form a moving contact plate mating portion parallel to the central connecting portion. A moving contact plate limiting seat is provided on the moving contact plate mating portion, and a limiting seat receiving portion is provided within the moving contact plate limiting seat. The groove has a central portion for a moving contact plate riveting hole through which the riveting column of the cylinder passes. The bottom of the riveting column of the cylinder has a riveting column guide hole for guiding during riveting by a riveting machine. The riveting column of the cylinder has a riveting column separation groove spaced around the riveting column guide hole in an arc. The moving contact plate riveting hole has a moving contact plate inner limit block spaced around the inner wall of the moving contact plate in an arc for placing in the riveting column separation groove. The groove of the limiting seat has a limiting seat guide block spaced around an arc corresponding to the riveting column separation groove.

[0005] The number of the riveting column separation groove, the moving contact plate inner limiting block, and the limiting seat guide block are all 4.

[0006] The bottom of the cylinder receiving part is provided with a cylinder square anti-rotation block, the bottom of the cylinder square anti-rotation block is provided with the cylinder riveting post, and the front of the moving contact plate docking part is provided with a moving contact plate front limiting groove for limiting the cylinder square anti-rotation block.

[0007] The moving contact has a silver-coated hemisphere in the middle that contacts and connects with the stationary contact.

[0008] The upper surface of the silver-coated layer of the moving contact is provided with a chamfer.

[0009] The advantages of this composite rivet moving contact assembly are as follows: the bottom structure of the cylinder riveting column combined with the moving contact plate limiting seat structure makes the cylinder riveting column easier to rivet, the contact surface after riveting is flatter and more even, and the riveting pressure is reliable and not easy to fall off without damaging the contact surface. The riveting structure is firm and stable, the riveting effect is good, the temperature rise is effectively reduced, and the service life of the product is improved. Attached Figure Description

[0010] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0011] Figure 1 This is an exploded view of the composite rivet moving contact assembly of this utility model;

[0012] Figure 2 This is a front structural diagram of the moving contact of this utility model;

[0013] Figure 3 This is a schematic diagram of the back structure of the moving contact of this utility model;

[0014] Figure 4 This is a schematic diagram of the back structure of the moving contact plate of this utility model;

[0015] Figure 5 yes Figure 4 Enlarged image;

[0016] Figure 6 This is a front structural diagram of the moving contact plate of this utility model. Detailed Implementation

[0017] like Figure 1-6As shown, the composite rivet moving contact assembly of this utility model includes a moving contact plate 1 and a moving contact 2 riveted to the moving contact plate 1. The moving contact 2 includes a moving contact copper body 4 and a moving contact silver-plated layer 5 disposed on the moving contact copper body 4. The moving contact copper body 4 includes a cylindrical receiving portion 6 and a cylindrical riveting post 7 disposed at the bottom of the cylindrical receiving portion 6. The moving contact plate 1 includes a moving contact plate central portion 15. The two ends of the moving contact plate central portion 15 are bent in sequence to form a moving contact plate mating portion 16 disposed parallel to the moving contact plate central portion 15. The moving contact plate mating portion 16 is provided with a moving contact plate limiting seat 18. The moving contact plate limiting seat 18 is provided with a limiting seat receiving groove 20. The limiting seat receiving groove 20 is provided with a moving contact plate riveting hole 17 for the cylindrical riveting post 7 to pass through in the middle. The bottom of the cylindrical riveting post 7 is provided with a riveting guide for riveting by a riveting machine. The cylinder riveting column 7 has a guide hole 11, and a riveting column separation groove 12 is provided around the guide hole 11 at an arc. The moving contact plate riveting hole 17 has an inner limit block 19 for placing in the riveting column separation groove 12 on the inner wall of the moving contact plate 1. The limit seat receiving groove 20 has a limit seat guide block 21 corresponding to the riveting column separation groove 12 at an arc. The riveting machine rivets the moving contact plate riveting hole 17. Because the inner limit block 19 of the moving contact plate is connected to the riveting column separation groove 12, the bottom surface of the cylinder riveting column 7 can extend outward more quickly and easily after being pressed. Under the action of the limit seat guide block 21, the contact surface after riveting is evenly laid in the limit seat receiving groove 20. Under the riveting pressure that does not damage the contact surface, the riveting is reliable and not easy to fall off. The riveting structure is firm and stable and the riveting effect is good.

[0018] The number of the riveting column separation groove 12, the moving contact plate inner limiting block 19, and the limiting seat guide block 21 are all 4, which facilitates processing and makes the force more even.

[0019] The bottom of the cylindrical receiving part 6 is provided with a cylindrical square anti-rotation block 10, and the bottom of the cylindrical square anti-rotation block 10 is provided with a cylindrical riveting post 7. The front of the moving contact plate docking part 16 is provided with a moving contact plate front limiting groove 23 for limiting the cylindrical square anti-rotation block 10. After riveting, the anti-displacement and anti-rotation effect of the moving contact 2 is further enhanced, and the firmness of the contact is improved.

[0020] The moving contact silver-coated layer 5 has a silver-coated layer hemispherical 9 in the middle that contacts and connects with the stationary contact. The spherical geometry allows the contact to automatically correct positional deviations when closed, avoiding poor contact caused by mechanical misalignment. It is especially suitable for scenarios with frequent operation, making the contact surface stable and reliable.

[0021] The upper surface of the silver-coated layer 5 of the moving contact is provided with a silver-coated layer chamfer 8, which makes the current distribution more uniform, reduces the current density concentration in the edge area, and reduces the contact resistance by about 15%, thereby reducing energy consumption and heat generation.

[0022] 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 composite rivet movable contact assembly, comprising a movable contact plate (1) and a movable contact (2) riveted on the movable contact plate (1), the movable contact (2) comprising a movable contact copper body (4) and a movable contact silver coating layer (5) provided on the movable contact copper body (4), the movable contact copper body (4) comprising a barrel receiving portion (6) and a barrel riveting column (7) provided at the bottom of the barrel receiving portion (6), characterized in that: The movable contact plate (1) includes a movable contact plate central section (15). The two ends of the movable contact plate central section (15) are bent in sequence to form a movable contact plate mating section (16) arranged parallel to the movable contact plate central section (15). A movable contact plate limiting seat (18) is provided on the movable contact plate mating section (16). A limiting seat receiving groove (20) is provided in the movable contact plate limiting seat (18). A movable contact plate riveting hole (17) for the cylinder riveting column (7) to pass through is provided in the middle of the limiting seat receiving groove (20). The bottom of the cylinder riveting column (7) The part is provided with a riveting column guide hole (11) for guiding during riveting by the riveting machine. The riveting column (7) of the cylinder is provided with a riveting column separation groove (12) at intervals around the riveting column guide hole (11). The riveting hole (17) of the moving contact plate is provided with a moving contact plate inner limit block (19) at intervals around the inner wall of the moving contact plate (1) for placing in the riveting column separation groove (12). The limit seat receiving groove (20) is provided with a limit seat guide block (21) at intervals around the arc corresponding to the riveting column separation groove (12).

2. The composite rivet moving contact assembly according to claim 1, characterized in that: The number of the riveting column separation groove (12), the moving contact plate inner limiting block (19), and the limiting seat guide block (21) are all 4.

3. The composite rivet moving contact assembly according to claim 1, characterized in that: The bottom of the cylindrical receiving part (6) is provided with a cylindrical square anti-rotation block (10), the bottom of the cylindrical square anti-rotation block (10) is provided with the cylindrical riveting post (7), and the front of the moving contact plate docking part (16) is provided with a moving contact plate front limiting groove (23) for limiting the cylindrical square anti-rotation block (10).

4. The composite rivet moving contact assembly according to claim 1, characterized in that: The moving contact silver coating layer (5) has a silver coating layer hemisphere (9) in the middle that contacts and connects with the stationary contact.

5. The composite rivet moving contact assembly according to claim 1, characterized in that: The upper surface of the silver coating layer (5) of the moving contact is provided with a silver coating chamfer (8).

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