Switch moving contact assembly

Abstract

The utility model relates to the technical field of electrical switches, and discloses a switch moving contact assembly which comprises a top cover and a machine shell, the machine shell is fixedly installed at the lower end of the top cover, the end face of the top cover is slidably connected with a pressing rod, and two magnetic columns with opposite magnetic poles are fixedly inserted into the rod wall of the pressing rod. Two fixing rods are fixedly installed on the side wall of the machine shell, the two fixing rods are jointly connected with a movable plate in a sliding mode, a permanent magnet is fixedly connected to the side wall of the movable plate in an inserted mode, a movable through hole matched with the movable plate is formed in the lower end of the machine shell, and a translation insulating plate is fixedly installed at the lower end of the movable plate. And a moving contact is fixedly mounted on the side wall of the translation insulating plate. According to the invention, the wear degree of the moving contact during the pressing action can be effectively reduced, and the long-time use stability of the switch is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electrical switches, and in particular to a switch moving contact assembly. Background Art

[0002] Switches are widely used in many electrical devices. Switches usually complete the connection of the circuit by engaging the moving contact with the fixed contact. By controlling the switch action, the circuit can be turned on and off.

[0003] At present, common switches usually engage the moving contact and the fixed contact through a pressing action through a mechanical linkage assembly, and then cooperate with an elastic element to cooperate with the separation action of the moving contact and the fixed contact. However, when the mechanical linkage assembly presses the moving contact, the mechanical linkage assembly relies on extrusion friction to engage the moving contact and the fixed contact, resulting in a certain amount of wear between the mechanical linkage assembly and the moving contact. Especially when the switch is frequently operated, the degree of wear is relatively large, which may subsequently cause the moving contact to fail to be pressed into place, affecting the use effect of the switch. Utility Model Content

[0004] The purpose of the present application is to solve the problem in the prior art that when the mechanical linkage assembly presses the moving contact, the mechanical linkage assembly relies on the extrusion friction force to engage the moving contact with the fixed contact, resulting in a certain amount of wear between the mechanical linkage assembly and the moving contact. In particular, when the switch is frequently operated, the degree of wear is relatively large, which may subsequently cause the moving contact to fail to be pressed into place, affecting the use effect of the switch. A switch moving contact assembly is proposed to solve the problem.

[0005] In order to achieve the above purpose, this application adopts the following technical solutions:

[0006] A switch moving contact assembly comprises a top cover and a casing, wherein the casing is fixedly mounted on the lower end of the top cover, a pressing rod is slidably connected to the end surface of the top cover, two magnetic poles with opposite magnetic poles are fixedly inserted into the rod wall of the pressing rod, two fixing rods are fixedly mounted on the side wall of the casing, and a movable plate is slidably connected to the two fixing rods together, a permanent magnet is fixedly inserted into the side wall of the movable plate, a movable through hole matching the movable plate is opened at the lower end of the casing, a translation insulating plate is fixedly mounted on the lower end of the movable plate, and a moving contact is fixedly mounted on the side wall of the translation insulating plate.

[0007] Preferably, the side wall of the pressing rod is integrally formed with an extension portion, a snap-in groove is provided at the end of the extension portion, an elastic pad is fixedly installed on the inner wall of the casing, and a snap-in block is fixedly installed at the end of the elastic pad, an upper end of the snap-in block is provided with an inclined groove, and a return spring is fixedly provided between the extension portion and the lower end of the top cover.

[0008] Preferably, a cavity is opened inside the pressing rod, and the cavity is slidably connected to a rebound rod, a horizontal push block is provided below the rebound rod, and the side wall of the horizontal push block is provided with an inclined groove, the cavity wall of the cavity and the bottom of the clamping groove are slidably connected to a horizontal push rod, and the rod end of the horizontal push rod is fixedly connected to the side wall of the horizontal push block.

[0009] Preferably, the rod wall of the rebound rod is fixedly sleeved with a limiting block, and the limiting block is slidably arranged inside the cavity.

[0010] Preferably, a sliding rod is fixedly mounted on the side wall of the clamping block, and the rod wall of the sliding rod is slidably connected to the side wall of the housing.

[0011] Preferably, a support spring is fixedly provided between the side wall of the transverse push block and the cavity wall of the cavity.

[0012] Compared with the prior art, the present application provides a switch moving contact assembly having the following

[0013] Beneficial effects:

[0014] 1. The switch moving contact assembly, through the cooperation of the top cover, housing, pressing rod, magnetic column, fixed rod, movable plate, permanent magnet, translation insulating plate and contact, through the pressing action, utilizes the magnetic push and magnetic attraction effect to make the moving contact move translationally, effectively reducing the degree of wear during the pressing action and improving the stability of the switch during long-term use.

[0015] 2. The switch moving contact assembly can limit and fix the pressed pressing rod through the cooperation of the arranged extension part, the clamping groove, the elastic pad, the clamping block and the reset spring. The arranged cavity, the rebound rod, the horizontal push block and the horizontal push rod can cooperate with each other to facilitate the separation of the clamping block from the clamping groove and the rebound and reset of the pressing rod.

[0016] Moreover, the parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The present application can effectively reduce the degree of wear during the pressing action and improve the stability of the switch during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a switch moving contact assembly proposed in this application;

[0018] Figure 2 A switch moving contact assembly proposed in this application Figure 1 A magnified view of the structure of part A;

[0019] Figure 3 A switch moving contact assembly proposed in this application Figure 1 A magnified view of the structure of part B.

[0020] In the figure: 1. top cover; 2. housing; 3. pressing rod; 4. magnetic column; 5. fixing rod; 6. movable plate; 7. permanent magnet; 8. translation insulating plate; 9. moving contact; 10. extension part; 11. snap-in groove; 12. elastic pad; 13. snap-in block; 14. reset spring; 15. cavity; 16. rebound rod; 17. horizontal push block; 18. horizontal push rod; 19. limit block; 20. slide rod; 21. support spring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0022] Reference Figure 1-3 A switch moving contact assembly comprises a top cover 1 and a casing 2, the casing 2 is fixedly mounted on the lower end of the top cover 1, a pressing rod 3 is slidably connected to the end surface of the top cover 1, two magnetic poles 4 with opposite magnetic poles are fixedly inserted into the rod wall of the pressing rod 3, two fixing rods 5 are fixedly mounted on the side wall of the casing 2, and a movable plate 6 is slidably connected to the two fixing rods 5 together, a permanent magnet 7 is fixedly inserted into the side wall of the movable plate 6, a movable through hole matching the movable plate 6 is opened at the lower end of the casing 2, a translation insulating plate 8 is fixedly mounted on the lower end of the movable plate 6, and a moving contact 9 is fixedly mounted on the side wall of the translation insulating plate 8.

[0023] The side wall of the pressing rod 3 is integrally formed with an extension portion 10, and a clamping groove 11 is opened at the end of the extension portion 10. An elastic pad 12 is fixedly installed on the inner wall of the casing 2, and a clamping block 13 is fixedly installed at the end of the elastic pad 12. The upper end of the clamping block 13 is provided with an inclined groove, and a return spring 14 is fixedly provided between the extension portion 10 and the lower end of the top cover 1. Through this arrangement, the pressed pressing rod 3 can be easily limited and fixed.

[0024] A cavity 15 is provided inside the pressing rod 3, and the cavity 15 is slidably connected with a rebound rod 16, a horizontal push block 17 is provided below the rebound rod 16, and the side wall of the horizontal push block 17 is provided with an inclined groove, the cavity wall of the cavity 15 and the groove bottom of the clamping groove 11 are slidably connected with a horizontal push rod 18, and the rod end of the horizontal push rod 18 is fixedly connected to the side wall of the horizontal push block 17, by pressing the rebound rod 16, the horizontal push block 17 can be pushed to move laterally, so that the clamping block 13 inside the clamping groove 11 can be pushed out by the horizontal push rod 18, which is convenient for the rebound reset of the pressing rod 13.

[0025] The rod wall of the rebound rod 16 is fixedly sleeved with a limit block 19 , and the limit block 19 is slidably arranged inside the cavity 15 . This arrangement can prevent the rebound rod 16 from being separated from the cavity 15 .

[0026] The side wall of the clamping block 13 is fixedly mounted with a slide bar 20, and the rod wall of the slide bar 20 is slidably connected to the side wall of the housing 2. This arrangement can facilitate the stable telescopic movement of the clamping block 13 and prevent it from tilting.

[0027] A support spring 21 is fixedly provided between the side wall of the transverse push block 17 and the cavity wall of the cavity 15. This arrangement facilitates the return and reset of the transverse push block 17.

[0028] In the present application, when in use, when the moving contact 9 is not engaged with the fixed contact, the magnetic column 4 on the lower side will generate a magnetic attraction force on the permanent magnet 7. At this time, the movable plate 6 is tightly against one side of the pressing rod 3, and when the moving contact 9 needs to be engaged with the fixed contact, the pressing rod 3 is pressed, so that the two magnetic columns 4 can be moved downward. At this time, the magnetic column 4 on the lower side is separated from the permanent magnet 7, and the magnetic column 4 on the upper side will be aligned with the permanent magnet 7. Under the effect of like-charge repulsion, the magnetic column 4 on the upper side will push the permanent magnet 7 to move in the opposite direction. At this time, the movable plate 6 will move away from the pressing rod 3, so that the moving contact 9 can be driven to move in translation by translating the insulating plate 8, thereby completing the engagement of the moving contact 9 with the fixed contact.

[0029] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present application according to the technical solution and utility model concept of the present application, which should be covered by the protection scope of the present application.

Claims

1. A switch moving contact assembly, comprising a top cover (1) and a housing (2), characterized in that: The housing (2) is fixedly mounted on the lower end of the top cover (1); the end surface of the top cover (1) is slidably connected to a pressing rod (3); two magnetic poles (4) with opposite magnetic poles are fixedly inserted into the rod wall of the pressing rod (3); two fixing rods (5) are fixedly mounted on the side wall of the housing (2); the two fixing rods (5) are slidably connected to a movable plate (6); a permanent magnet (7) is fixedly inserted into the side wall of the movable plate (6); a movable through hole matching the movable plate (6) is opened at the lower end of the housing (2); a translation insulating plate (8) is fixedly mounted on the lower end of the movable plate (6); and a moving contact (9) is fixedly mounted on the side wall of the translation insulating plate (8).

2. A switch moving contact assembly according to claim 1, characterized in that: The side wall of the pressing rod (3) is integrally formed with an extension portion (10), the end of the extension portion (10) is provided with a snap-in groove (11), the inner wall of the housing (2) is fixedly mounted with an elastic pad (12), and the end of the elastic pad (12) is fixedly mounted with a snap-in block (13), the upper end of the snap-in block (13) is provided with an inclined groove, and a return spring (14) is fixedly provided between the extension portion (10) and the lower end of the top cover (1).

3. A switch moving contact assembly according to claim 1, characterized in that: The pressing rod (3) has a cavity (15) formed inside, and the cavity (15) is slidably connected to a rebound rod (16), a horizontal push block (17) is provided below the rebound rod (16), and the side wall of the horizontal push block (17) is provided with an inclined groove, the cavity wall of the cavity (15) and the bottom of the clamping groove (11) are slidably connected to a horizontal push rod (18), and the rod end of the horizontal push rod (18) is fixedly connected to the side wall of the horizontal push block (17).

4. A switch moving contact assembly according to claim 3, characterized in that: The rod wall of the rebound rod (16) is fixedly sleeved with a limit block (19), and the limit block (19) is slidably arranged inside the cavity (15).

5. A switch moving contact assembly according to claim 2, characterized in that: A sliding rod (20) is fixedly mounted on the side wall of the clamping block (13), and the rod wall of the sliding rod (20) is slidably connected to the side wall of the housing (2).

6. A switch moving contact assembly according to claim 3, characterized in that: A supporting spring (21) is fixedly provided between the side wall of the transverse push block (17) and the cavity wall of the cavity (15).

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