A movable contact assembly, a contact set movable contact shaft and a contact set

Abstract

The utility model provides a kind of movable contact component, contact group movable shaft and contact group, it is related to electric switch machine technical field, the movable contact component includes: contact support, the contact support has recess; contact block, at least part is set in the recess, the contact block includes base and the contact of the both sides on the top of base;And support pin, the support pin passes through base and the slot wall of the recess, the service life of the contact group is lengthened by the movable contact component.

Description

Technical Field

[0001] This utility model relates to the field of electric switch machine technology, specifically to a moving contact assembly, a moving contact shaft of a contact group, and a contact group. Background Technology

[0002] The contact group on a switch machine is a set of electrical switch contacts. The electrical switching function of the contact group can control the on / off of the circuit and provide feedback on the status to ensure that the turnout position signal and mechanical action are consistent. It usually includes stationary contacts mounted on the housing and moving contacts that move with the shaft. The moving contacts can close or open with the stationary contacts, and the stationary contacts can be connected to external control circuits.

[0003] In the prior art, after long-term electrical operation, the moving contact group is prone to differential ablation of the contact surface due to uneven contact pressure. This ablation will further aggravate the contact pressure imbalance, forming a vicious cycle, and ultimately affecting the stability and service life of the moving contact group. Utility Model Content

[0004] The purpose of this invention is to overcome the defects of the prior art and provide a moving contact assembly, a moving contact shaft for a contact group, and a contact group to enhance the stability and service life of the contact group.

[0005] To achieve the above and other objectives, this utility model provides a moving contact assembly, which includes:

[0006] A contact holder having a groove;

[0007] A contact block, at least partially disposed within the groove, the contact block comprising a base and contacts located on both sides of the top of the base;

[0008] And a support pin, which passes through the base and the groove wall of the groove.

[0009] This utility model also provides a contact assembly moving shaft including the moving contact assembly described above.

[0010] This utility model also provides a contact group including the moving contact shaft as described above.

[0011] The moving contact assembly, contact group, moving shaft, and contact group adopted in this utility model have the following beneficial effects: In the moving contact structure of this utility model, the support pin is located at the center of the adaptive contact block. When the spring is stressed, the support pin will give the two contact surfaces of the contact block the same contact pressure, and will not cause uneven force on the two contact surfaces of the contact block due to the uneven force of the spring. The moving contact structure solves the problem of uneven contact pressure on the two contact surfaces of the moving contact, thereby significantly increasing the service life of the contact group. Attached Figure Description

[0012] Figure 1 The diagram shown is a structural schematic of the moving contact assembly of this utility model.

[0013] Figure 2 The image shown is a top view of the moving contact assembly of this utility model.

[0014] Figure 3 The diagram shown is a structural schematic of the shaft of this utility model.

[0015] Figure 4 The image shown is a cross-sectional view of the shaft of this utility model.

[0016] Figure 5 This utility model is shown. Figure 4 A cross-sectional view of the BB plane.

[0017] Figure 6 The diagram shown is a structural schematic of the contact assembly of this utility model.

[0018] The following numbers are used in the diagram: 1-Contact bracket, 11-Support, 12-Limiting post, 111-Groove, 112-Groove wall, 113-First through hole, 2-Contact block, 21-Base, 211-Second through hole, 22-Contact, 3-Support pin, 4-Spring, 5-Padded block, 6-Plug, 7-Shaft, 71-Mounting hole, 8-Static contact unit, 81-Static contact block, 82-Through hole, 9-Cover. Detailed Implementation

[0019] Please see Figures 1 to 6 The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0020] like Figure 1 and Figure 3As shown, this utility model provides a moving contact assembly, which includes a contact bracket 1. The contact bracket 1 includes a support 11 and a limiting post 12. The support 11 is connected above the limiting post 12. The support 11 has a groove 111, and the groove walls 112 on both sides of the groove 111 have first through holes 113.

[0021] like Figure 5 As shown, the moving contact assembly includes a contact block 2, which includes a base 21 and contacts 22 located on both sides of the top of the base 21. The contacts 22 are located outside the groove 111, and the top of the contacts 22 is a convex arc surface. The base 21 has a second through hole 211.

[0022] The moving contact assembly includes a support pin 3, which passes through the base 21 and the groove wall 112 of the groove 111 via the first through hole 113 and the second through hole 211. The support pin 3 can be riveted into the first through hole 113 and the second through hole 211. The first through hole 113 is an opening facing outward of the groove wall 112, specifically formed by an inner constant diameter hole and an outer enlarged diameter hole.

[0023] like Figure 3 and Figure 4 As shown, this utility model also provides a contact assembly movable shaft including the movable contact assembly as described above. The contact assembly movable shaft includes a shaft 7 with a plurality of mounting holes 71. A spring 4 is disposed in the mounting holes 71. One end of the movable contact assembly is located in the mounting hole 71 and contacts one end of the spring 4. Specifically, the limiting post 12 is fitted into the spring 4. The other end of the movable contact assembly extends out of the mounting hole 71. Specifically, the contact 22 extends out of the mounting hole 71.

[0024] like Figure 4 As shown, the movable contact shaft of the contact group also includes a pad 5 and a plug 6. The pad 5 is disposed in the mounting hole 71. One end of the pad 5 contacts the other end of the spring 4, and the other end of the pad 5 contacts the plug 6. The plug 6 can be threaded into the mounting hole 71.

[0025] The support pin 3 of this invention is located at the center of the contact block 2. When the spring 4 is stressed, the support pin 3 will apply the same contact pressure to both contact surfaces of the contact block 2, preventing uneven force distribution on the two contact surfaces of the contact 22 due to uneven force distribution on the spring 4. Since the front-to-back direction of the contact bracket 1 is consistent with the movement direction of the contact block 2, even if the force distribution on the contact bracket 1 is uneven, it will not affect the normal opening and closing of the contacts.

[0026] This invention also provides a contact assembly, which includes a movable contact shaft as described above. The contact assembly further includes a stationary contact unit 8, which has a through hole 82 through which the movable contact shaft passes. The stationary contact unit 8 has a stationary contact block 81, the bottom of which can contact the contact 22 to achieve electrical signal conduction. The movable contact surface of this invention is a convex arc surface that contacts the concave arc surface of the stationary contact block 81, thus forming an adaptive arc surface contact method, ensuring the contact fit rate from a design perspective.

[0027] The contact assembly also includes a cover 9, which can be connected to the stationary contact unit 8 by bolts to seal one side of the through hole 82.

[0028] like Figure 6 As shown, when the contact assembly of this utility model is working, when the contact moving shaft rotates to the preset position, the contact 22 and the stationary contact block 81 can form an elastic compression in the through hole 82 to establish an electrical connection path to realize signal transmission.

[0029] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value. The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A moving contact assembly, characterized in that: The moving contact assembly includes: Contact bracket (1), the contact bracket (1) having a groove (111); The contact block (2) is at least partially disposed in the groove (111), and the contact block (2) includes a base (21) and contacts (22) located on both sides of the top of the base (21). And a support pin (3) that passes through the base (21) and the groove wall (112) of the groove (111).

2. The moving contact assembly according to claim 1, characterized in that: The contact bracket (1) includes a limiting post (12) and a support (11) connected to the limiting post (12), and the groove (111) is disposed in the support (11).

3. The moving contact assembly according to claim 1, characterized in that: The groove (111) has a through hole in its groove wall (112) and the base (21), through which the support pin (3) passes.

4. The moving contact assembly according to claim 3, characterized in that: The through hole is located at the center of the groove wall (112) of the groove (111) and the base (21).

5. The moving contact assembly according to claim 3, characterized in that: The support pin (3) is riveted into the through hole.

6. The moving contact assembly according to claim 1, characterized in that: The top of the contact (22) is a convex arc surface.

7. The moving contact assembly according to claim 1, characterized in that: The contact (22) is located outside the groove (111).

8. A contact assembly moving shaft, characterized in that: The movable shaft of the contact group includes: Shaft (7), which has a plurality of mounting holes (71); Spring (4) is disposed within the plurality of mounting holes (71); A moving contact assembly, one end of which is located inside the mounting hole (71) and in contact with one end of the spring (4), and the other end of which extends out of the mounting hole (71). A pad (5) is disposed in the mounting hole (71), and one end of the pad (5) is in contact with the other end of the spring (4); And a plug (6) is connected in the mounting hole (71), the plug (6) being disposed at the other end of the pad (5); The moving contact assembly includes: Contact bracket (1), the contact bracket (1) having a groove (111); The contact block (2) is at least partially disposed in the groove (111), and the contact block (2) includes a base (21) and contacts (22) located on both sides of the base (21). And a support pin (3) that passes through the base (21) and the groove wall (112) of the groove (111).

9. A contact assembly, characterized in that: The contact group includes a contact group moving shaft as described in claim 8.

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