Static contact assembly for alternating current contactor

Abstract

The utility model relates to a static contact assembly for an AC contactor. The technical problem to be solved by the utility model is to provide the static contact assembly for the AC contactor. According to the technical scheme, the static contact comprises a contact plate and a static contact, the static contact comprises a static contact copper body and a static contact silver layer, the static contact copper body comprises a copper body bearing part and a cylinder riveting column, a riveting column limiting block is arranged on the outer wall of the cylinder riveting column, the contact plate comprises a contact plate wiring part, and the contact plate wiring part is connected with the static contact silver layer. The contact plate wiring part is vertically bent outwards in sequence to form a contact plate transition part and a contact plate upper contact part, and the end part of the contact plate upper contact part is bent inwards by 180 degrees to form a contact plate lower contact part attached to the lower portion of the contact plate upper contact part. The utility model has the advantages that the riveting column limiting block is inserted into the contact plate for rotation limiting, the connection tightness of the static contact and the contact plate before riveting is effectively enhanced, a multiple limiting structure is provided, and the stability and reliability of the joint after riveting are effectively improved.

Description

Technical Field

[0001] This utility model relates to a stationary contact assembly for an AC contactor. Background Technology

[0002] The stationary contact assembly for AC contactors is the component in AC contactors that enables circuit connection and disconnection. The stationary contact assembly for AC contactors includes a stationary contact and a contact plate. The existing riveting post of the stationary contact and the contact plate are only connected by simple hole alignment, lacking a limiting structure. During the riveting process, uneven riveting contact surfaces are easily caused, resulting in unreliable connections and easy detachment. After riveting, the riveting post is prone to positional displacement (such as slight rotation) when subjected to impact or vibration during the connection, affecting the stability and reliability of the stationary contact after riveting. Improvements and optimizations are made 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 stationary contact assembly for an AC contactor.

[0004] The technical solution adopted by the static contact assembly for the AC contactor of this utility model is as follows: It includes a contact plate and static contacts riveted to the contact plate. The static contacts are characterized by comprising a copper body and a silver layer. The copper body includes a copper receiving portion that abuts against the silver layer and a cylindrical riveting post. A riveting post limiting block is provided on the outer wall of the cylindrical riveting post, and the limiting block has an arc structure. The contact plate includes a contact plate wiring portion. The wiring portion is bent vertically outward to form a contact plate transition portion and a contact plate upper contact portion. The end of the contact plate upper contact portion is bent inward at 180° to form a lower contact portion that fits below the contact plate upper contact portion. The contact plate upper contact portion and the lower contact portion have vertically penetrating arrangements for the cylindrical riveting post to pass through. The contact plate has a mating hole. The upper end face of the contact portion on the contact plate is provided with an upper contact portion inlet for inserting the rivet post limiting block at the mating hole. The lower end face of the contact portion on the contact plate is provided with an upper contact portion rotation groove at the mating hole, which communicates with the upper contact portion inlet and is used for rotating the rivet post limiting block. The upper end face of the lower contact portion on the contact plate is provided with a lower contact portion rotation groove at the mating hole, which communicates with the upper contact portion rotation groove and is used for limiting the rivet post limiting block. The upper contact portion inlet and the lower contact portion limiting groove are arranged perpendicularly to each other.

[0005] The diameter of the upper contact portion rotating groove is the same as the diameter of the lower contact portion rotating groove.

[0006] The depth of the lower contact portion limiting opening is the same as the height of the riveting post limiting block.

[0007] The outer wall of the cylinder riveting post is provided with riveting post limiting blocks at intervals around the arc. The number of riveting post limiting blocks, the number of upper contact portion insertion ports and the number of lower contact portion limiting ports are all two.

[0008] The bottom of the riveting column of the cylinder is provided with a groove inside the riveting column to facilitate riveting by the riveting machine.

[0009] The contact plate wiring part is provided with a contact plate threaded hole, and the lower end face of the contact plate wiring part is provided with a contact plate anti-slip texture.

[0010] The advantages of this utility model of stationary contact assembly for AC contactors are: by inserting the riveting post limiting block into the contact plate for rotational limiting, the connection between the stationary contact and the contact plate before riveting is effectively strengthened, and the multiple limiting structure effectively improves the stability and reliability of the connection after riveting. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0012] Figure 1 This is a schematic diagram of the structure of the stationary contact assembly for the AC contactor of this utility model;

[0013] Figure 2 This is a front structural diagram of the static contact of this utility model;

[0014] Figure 3 This is a schematic diagram of the back structure of the static contact of this utility model;

[0015] Figure 4 This is a schematic diagram of the back structure of the contact plate of this utility model;

[0016] Figure 5 yes Figure 4 Enlarged image;

[0017] Figure 6 This is a schematic diagram of the front structure of the contact plate of this utility model;

[0018] Figure 7 yes Figure 6 Enlarged image. Detailed Implementation

[0019] like Figure 1-7As shown, the present invention relates to a stationary contact assembly for an AC contactor, comprising a contact plate 1 and stationary contacts 2 riveted to the contact plate 1. The stationary contact 2 includes a copper body 4 and a silver layer 5. The copper body 4 includes a copper receiving portion 6 that abuts against the silver layer 5 and a cylindrical riveting post 7. The outer wall of the cylindrical riveting post 7 is provided with a riveting post limiting block 8, which has an arc structure. The contact plate 1 includes a contact plate wiring portion 10. The plate connection portion 10 is bent vertically outward in sequence to form a contact plate transition portion 11 and a contact plate upper contact portion 12. The end of the contact plate upper contact portion 12 is bent inward at 180° to form a contact plate lower contact portion 13 that fits below the contact plate upper contact portion 12. The contact plate upper contact portion 12 and the contact plate lower contact portion 13 are provided with contact plate mating holes 14 that are arranged vertically through the cylinder riveting post 7 for the cylinder to pass through. The upper end face of the contact plate upper contact portion 12 is on the contact plate. The mating hole 14 is provided with an upper contact insertion port 16 for the insertion of the riveting post limiting block 8. The lower end face of the contact portion 12 on the contact plate is provided with an upper contact rotation groove 17 at the contact plate mating hole 14, which communicates with the upper contact insertion port 16 and is used for the rotation of the riveting post limiting block 8. The upper end face of the lower contact portion 13 on the contact plate is provided with a lower contact rotation groove 18 at the contact plate mating hole 14, which communicates with the upper contact rotation groove 17. The lower end face of the lower contact portion 13 on the contact plate is provided with a lower contact limiting port 19 at the contact plate mating hole 14, which communicates with the lower contact rotation groove 18 and is used for the limiting of the riveting post limiting block 8. The upper contact insertion port 16 and the lower contact limiting port 19 are arranged perpendicularly to each other. By inserting the riveting post limiting block 8 into the contact plate 1 for rotation limiting, the connection tightness between the stationary contact 2 and the contact plate 1 before riveting is effectively strengthened. It has a multi-limiting structure and effectively improves the stability and reliability of the connection after riveting.

[0020] The diameter of the upper contact portion rotating groove 17 is the same as the diameter of the lower contact portion rotating groove 18, so that the riveting post limiting block 8 can smoothly transition from the upper contact portion rotating groove 17 to the lower contact portion rotating groove 18 and is not easy to get stuck.

[0021] The depth of the lower contact portion limiting opening 19 is the same as the height of the riveting post limiting block 8, preventing the riveting post limiting block 8 from protruding from the lower end face of the lower contact portion 13 of the contact plate and affecting the stability of the bottom riveting of the cylinder riveting post 7, thus ensuring the reliability and firmness of the riveting connection.

[0022] The outer wall of the cylindrical riveting post 7 is provided with riveting post limiting blocks 8 at intervals around the arc. There are two riveting post limiting blocks 8, two upper contact portion insertion ports 16, and two lower contact portion limiting ports 19. The connection of the cylindrical riveting posts 7 is more balanced, and the limiting structure is more stable and reliable.

[0023] The bottom of the cylinder riveting post 7 is provided with a riveting post inner groove 21 to facilitate riveting by the riveting machine, making the cylinder riveting post 7 easier to rivet, improving riveting efficiency and riveting firmness.

[0024] The contact plate wiring part 10 is provided with a contact plate threaded hole 23, and the lower end face of the contact plate wiring part 10 is provided with a contact plate anti-slip texture 25, so that the installation of the contact plate 1 is stable and reliable.

[0025] Riveting process: The riveting post limiting block 8 of the cylinder riveting post 7 is inserted into the upper contact portion insertion port 16 of the contact portion 12 on the contact plate and pressed down. Then, it is rotated 90° through the upper contact portion rotation groove 17 and the lower contact portion rotation groove 18 and placed in the lower contact portion limiting port 19 to achieve self-locking of the cylinder riveting post 7. Finally, the bottom of the cylinder riveting post 7 is riveted by the riveting press to make the bottom of the cylinder riveting post 7 and the lower contact portion 13 of the contact plate riveted together.

[0026] 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 static contact assembly for an AC contactor, comprising a contact plate (1) and a static contact (2) riveted to the contact plate (1), characterized in that: The stationary contact (2) includes a stationary contact copper body (4) and a stationary contact silver layer (5). The stationary contact copper body (4) includes a copper body receiving part (6) that is connected to the stationary contact silver layer (5) and a cylindrical body riveting post (7). The outer wall of the cylindrical body riveting post (7) is provided with a riveting post limiting block (8). The riveting post limiting block (8) is an arc structure. The contact plate (1) includes a contact plate wiring part (10). The contact plate wiring part (10) is bent vertically outward in sequence to form a contact plate transition part (11) and a contact plate upper contact part (12). The end of the contact plate upper contact part (12) is bent inward 180° to form a contact plate lower contact part (13) that fits below the contact plate upper contact part (12). The contact plate upper contact part (12) and the contact plate lower contact part (13) are provided with contact plate docking holes (14) that are arranged vertically and vertically and used for the cylindrical body riveting post (7) to pass through. The upper end face of the upper contact part (12) is provided with an upper contact part socket (16) for inserting the riveting post limiting block (8) at the contact plate docking hole (14). The lower end face of the upper contact part (12) of the contact plate is provided with an upper contact part rotating groove (17) at the contact plate docking hole (14) that communicates with the upper contact part socket (16) and is used for the rotation of the riveting post limiting block (8). The upper end face of the lower contact part (13) of the contact plate is provided with a lower contact part rotating groove (18) at the contact plate docking hole (14) that communicates with the upper contact part rotating groove (17). The lower end face of the lower contact part (13) of the contact plate is provided with a lower contact part limiting port (19) at the contact plate docking hole (14) that communicates with the lower contact part rotating groove (18) and is used for limiting the riveting post limiting block (8). The upper contact part socket (16) and the lower contact part limiting port (19) are arranged perpendicularly between each other.

2. An AC contactor stationary contact assembly according to claim 1, characterized in that: The diameter of the upper contact portion rotating groove (17) is the same as the diameter of the lower contact portion rotating groove (18).

3. The static contact assembly for an AC contactor of claim 1, wherein: The depth of the lower contact portion limiting port (19) is the same as the height of the riveting post limiting block (8).

4. The static contact assembly for an AC contactor of claim 1, wherein: The outer wall of the cylinder riveting post (7) is provided with riveting post limiting blocks (8) at intervals around the arc. The number of riveting post limiting blocks (8), the upper contact portion insertion port (16) and the lower contact portion limiting port (19) are all 2.

5. The static contact assembly for an AC contactor of claim 1, wherein: The bottom of the cylinder riveting column (7) is provided with a riveting column inner groove (21) to facilitate riveting by the riveting machine.

6. The static contact assembly for an AC contactor of claim 1, wherein: The contact plate wiring part (10) is provided with a contact plate threaded hole (23), and the lower end face of the contact plate wiring part (10) is provided with a contact plate anti-slip texture (25).

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