A contactor stationary contact assembly

Abstract

The utility model relates to a contactor static contact component. The technical problem that the utility model wants to solve provides a contactor static contact component. The utility model adopts the technical scheme: including static contact plate, static contact plate plug -in block, static contact point assembly and positioning pin, the static contact point assembly includes static contact point copper body, static contact point copper body upper end and lower end are equipped with static contact point main contact part and static contact point spare contact part respectively, static contact point copper body side part is equipped with copper body limiting hole, the static contact plate includes static contact plate middle support, and static contact plate middle support both ends are sequentially bent and form with static contact plate middle support parallelly arranged static contact plate butt -joint part. The utility model has the advantages of: static contact point assembly is equipped with spare contact, when static contact point main contact part is damaged, only needs to turn over static contact point assembly to enable spare contact part to continue using, avoids because local damage and scrapes whole component, and greatly improves the service life, reduces the maintenance cost, makes the connection close and reliable through the positioning pin.

Description

Technical Field

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

[0002] The stationary contact assembly is a crucial component of contactors in low-voltage electrical appliances. It mainly consists of a stationary contact plate, stationary contacts, and their fixing structure. Its function is to cooperate with the moving contacts to connect and disconnect the circuit. During frequent power-on and power-off operations, the stationary contact assembly needs to withstand current surges and mechanical shocks; its performance directly affects the contactor's service life and operational reliability. Existing contactor stationary contact assemblies generally suffer from the following problems: during repeated power-on and power-off processes, the contact areas are subjected to arc erosion and mechanical wear. When the contact area is insufficient, the entire stationary contact assembly often needs to be replaced, resulting in high maintenance costs. Traditional stationary contact assemblies typically only have a single contact surface; once the main contact surface is damaged, the assembly becomes unusable, easily leading to resource waste. Therefore, improvements and optimizations are needed 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 contactor static contact assembly.

[0004] The technical solution adopted by the contactor stationary contact assembly of this utility model is characterized by: including a stationary contact plate, a stationary contact plate insert, a stationary contact assembly, and a positioning pin. The stationary contact assembly includes a stationary contact copper body, with a main contact portion and a spare contact portion respectively provided at the upper and lower ends of the stationary contact copper body. A copper body limiting hole is provided on the side of the stationary contact copper body. The stationary contact plate includes a stationary contact plate central support portion. The two ends of the central support portion are successively bent to form a stationary contact plate mating portion parallel to the central support portion. A stationary contact plate insertion port is provided at the middle of the outer end of the stationary contact plate mating portion. A stationary contact plate limiting port is provided at the inner end of the insertion port. A horizontally arranged stationary contact plate positioning pin is provided within the limiting port. The stationary contact plate insert includes an insert body that fits against the outer end of the stationary contact plate mating portion and an insert insertion part that inserts into the stationary contact plate mating port. The insert insertion part is provided with an insert limiting port. A copper anti-rotation port for limiting the copper body of the stationary contact is formed between the insert limiting port and the stationary contact plate limiting port. The insert limiting port is provided with a horizontally arranged insert positioning hole that corresponds to the positioning hole of the stationary contact plate. The positioning pin is sequentially passed through the insert positioning hole, the copper body limiting hole and the stationary contact plate positioning hole, so that the stationary contact plate, the stationary contact plate insert and the stationary contact assembly are connected together.

[0005] The stationary contact plate insert also includes a stationary contact plate reinforcing wrapping portion disposed at the front and rear ends of the insert insertion portion, and the front and rear ends of the stationary contact plate mating portion are provided with stationary contact plate clearance openings corresponding to the stationary contact plate reinforcing wrapping portion.

[0006] It also includes a support pin, which is perpendicular to the positioning pin and passes through the stationary contact plate reinforcement wrapping part and the stationary contact plate mating part.

[0007] The stationary contact copper body has a square structure.

[0008] Both the main contact portion and the spare contact portion of the stationary contact include a stationary contact portion and a silver-coated layer on the stationary contact portion.

[0009] The middle part of the static contact plate support is provided with a static contact plate fixing hole, and the upper and lower ends of the static contact plate fixing hole are provided with static contact plate positioning recesses.

[0010] The advantages of this contactor stationary contact assembly are as follows: the stationary contact assembly is equipped with a spare contact. When the main contact part of the stationary contact is damaged, the spare contact part can be activated and used again simply by flipping the stationary contact assembly, avoiding the scrapping of the entire assembly due to partial damage, greatly improving the service life and reducing maintenance costs; the locating pin ensures a tight and reliable connection. 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 structural schematic diagram of the contactor stationary contact assembly of this utility model; Figure 2 This is a structural schematic diagram of the static contact assembly of this utility model; Figure 3 This is a schematic diagram of the structure of the static contact plate of this utility model; Figure 4 This is a schematic diagram of the structure of the static contact plate insert of this utility model; Figure 5 This is a schematic diagram of the positioning pin of this utility model. Detailed Implementation

[0013] like Figure 1-5As shown, the contactor stationary contact assembly of this utility model includes a stationary contact plate 1, a stationary contact plate insert 2, a stationary contact assembly 3, and a positioning pin 4. The stationary contact assembly 3 includes a stationary contact copper body 7, with a main stationary contact portion 8 and a spare stationary contact portion 9 respectively provided at the upper and lower ends of the stationary contact copper body 7. A copper body limiting hole 10 is provided on the side of the stationary contact copper body 7. The stationary contact plate 1 includes a stationary contact plate central support portion 11. The two ends of the stationary contact plate central support portion 11 are bent in sequence to form a stationary contact plate mating portion 12 arranged parallel to the stationary contact plate central support portion 11. A stationary contact plate insertion port 13 is provided at the middle of the outer end of the stationary contact plate mating portion 12. A stationary contact plate limiting port 14 is provided at the inner end of the stationary contact plate insertion port 13. A horizontally arranged stationary contact plate positioning hole 15 is provided in the stationary contact plate limiting port 14. The stationary contact plate insert 2 includes an insert body 18 that fits against the outer end of the stationary contact plate mating portion 12 and a pin that is inserted into the stationary contact plate. The contact plate has a plug insertion part 17 in the socket 13. The plug insertion part 17 is provided with a plug limiting port 19. The plug limiting port 19 and the stationary contact plate limiting port 14 form a copper anti-rotation port for limiting the stationary contact copper body 7. The plug limiting port 19 is provided with a horizontally set plug positioning hole 20 corresponding to the stationary contact plate positioning hole 15. The positioning pin 4 is sequentially passed through the plug positioning hole 20, the copper body limiting hole 10 and the stationary contact plate positioning hole 15, so that the stationary contact plate 1, the stationary contact plate plug 2 and the stationary contact assembly 3 are connected together. The stationary contact assembly 3 is equipped with a spare contact. When the main contact part 8 of the stationary contact is damaged, the spare contact part 9 can be used by simply flipping the stationary contact assembly 3, avoiding the scrapping of the entire component due to partial damage, greatly improving the service life and reducing maintenance costs; the positioning pin 4 makes the connection tight and reliable.

[0014] The static touch plate insert 2 also includes a static touch plate reinforcing wrapping part 21 provided at the front and rear ends of the insert 17, and the static touch plate docking part 12 is provided with a static touch plate clearance opening 22 corresponding to the static touch plate reinforcing wrapping part 21 at the front and rear ends.

[0015] It also includes a support pin 5, which is perpendicular to the positioning pin 4 and passes through the static contact plate reinforcing wrapping part 21 and the static contact plate docking part 12. The support pin 5 and the positioning pin 4 are fixed together, which significantly improves the overall strength and seismic performance of the structure.

[0016] The stationary contact copper body 7 has a square structure, which effectively prevents the stationary contact assembly 3 from rotating during operation and improves the stability and reliability of the contact.

[0017] Both the main contact portion 8 and the spare contact portion 9 of the stationary contact include a stationary contact portion 24 and a stationary contact silver coating layer 25 disposed on the stationary contact portion 24. The silver coating layer 25 can significantly improve conductivity and wear resistance, reduce arc erosion, and further improve contact life.

[0018] The middle part of the static contact plate support 11 is provided with a static contact plate fixing hole 27, and the upper and lower ends of the static contact plate fixing hole 27 are provided with static contact plate positioning recesses 28, making the installation more stable and reliable.

[0019] Both the positioning pin 4 and the support pin 5 have pin body notches 29 at their ends to facilitate clamping, installation and disassembly.

[0020] 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 contactor stationary contact assembly, characterized in that: The system includes a stationary contact plate (1), a stationary contact plate insert (2), a stationary contact assembly (3), and a positioning pin (4). The stationary contact assembly (3) includes a stationary contact copper body (7). The upper and lower ends of the stationary contact copper body (7) are respectively provided with a main contact part (8) and a spare contact part (9). The side of the stationary contact copper body (7) is provided with a copper body limiting hole (10). The stationary contact plate (1) includes a stationary contact plate central support part (11). The two ends of the stationary contact plate central support part (11) are bent in sequence to form a stationary contact plate mating part (12) arranged parallel to the stationary contact plate central support part (11). The middle of the outer end of the stationary contact plate mating part (12) is provided with a stationary contact plate insertion port (13). The inner end of the stationary contact plate insertion port (13) is provided with a stationary contact plate limiting port (14). The stationary contact plate limiting port (14) is provided with a horizontally arranged stationary contact plate positioning hole (15). The stationary contact plate plug (2) includes a plug body (18) that fits against the outer end of the stationary contact plate mating part (12) and a plug insertion part (17) that is inserted into the stationary contact plate mating port (13). The plug insertion part (17) is provided with a plug limiting port (19). A copper anti-rotation port for limiting the stationary contact copper body (7) is formed between the plug limiting port (19) and the stationary contact plate limiting port (14). The plug limiting port (19) is provided with a horizontally arranged plug positioning hole (20) that corresponds to the stationary contact plate positioning hole (15). The positioning pin (4) is sequentially inserted through the plug positioning hole (20), the copper body limiting hole (10), and the stationary contact plate positioning hole (15), so that the stationary contact plate (1), the stationary contact plate plug (2), and the stationary contact assembly (3) are connected together.

2. The contactor stationary contact assembly according to claim 1, characterized in that: The static touch plate plug (2) also includes a static touch plate reinforcing wrapping part (21) provided at the front and rear ends of the plug insertion part (17), and the static touch plate docking part (12) is provided with a static touch plate clearance opening (22) corresponding to the static touch plate reinforcing wrapping part (21) at the front and rear ends.

3. The contactor stationary contact assembly according to claim 2, characterized in that: It also includes a support pin (5), which is perpendicular to the positioning pin (4) and passes through the stationary contact plate reinforcing wrapping part (21) and the stationary contact plate docking part (12).

4. The contactor stationary contact assembly according to claim 1, characterized in that: The stationary contact copper body (7) has a square structure.

5. The contactor stationary contact assembly according to claim 1, characterized in that: The main contact portion (8) and the spare contact portion (9) of the stationary contact both include a stationary contact portion (24) and a stationary contact silver coating layer (25) disposed on the stationary contact portion (24).

6. The contactor stationary contact assembly according to claim 1, characterized in that: The middle part of the static contact plate support (11) is provided with a static contact plate fixing hole (27), and the middle part of the static contact plate support (11) is provided with a static contact plate positioning recess (28) at the upper and lower ends of the static contact plate fixing hole (27).

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