A type of anti-closing rebound stationary contact

Abstract

This utility model discloses an anti-closing rebound stationary contact, specifically relating to the field of stationary contact rebound protection technology. It includes a connector with a stationary contact rebound protection device at its upper end. The stationary contact rebound protection device comprises a bounce component and an anti-rebound isolation component. Compared with existing technologies, this utility model, through an anti-closing rebound stationary contact, allows the stationary contact body to rotate after bouncing via a rotating shaft and a flipping arc block at its lower end. After the flipping arc block rotates, the stationary contact body is attracted and connected by upper and lower magnetic plates at its rear end. Once the upper and lower magnetic plates are engaged, a certain resistance is achieved, reducing the rebound speed of the stationary contact body and further enhancing the rebound protection performance of the entire device, greatly improving the anti-closing stability of the entire device.

Description

Technical Field

[0001] This utility model relates to the field of stationary contact bounce protection technology, and more specifically, to a stationary contact that prevents closing bounce. Background Technology

[0002] "Anti-closing backflow stationary contact" is a stationary contact structure specifically designed to suppress the contact backflow phenomenon that occurs when an electromagnetic contactor or relay closes. When the moving contact of an electromagnetic contactor strikes the stationary contact rapidly, due to inertia and elasticity, a brief separation-re-contact (i.e., "rebound") occurs between the contacts. This can lead to: arc reignition, burning the contact surface; increased contact resistance, affecting conductivity; and contact welding, reducing lifespan or even causing failure. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide an anti-closing rebound stationary contact to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a stationary contact with anti-closing bounce, comprising a connector, wherein a stationary contact bounce protection device is provided at the upper end of the connector, the stationary contact bounce protection device comprising: a bounce component and an anti-bounce isolation component, wherein the anti-bounce isolation component is disposed at the upper and lower ends of the connector, and the bounce component is disposed at the front end of the anti-bounce isolation component.

[0005] In a preferred embodiment, the bouncing assembly includes: a rotating shaft, a mating groove, a flipping arc block, a stationary contact body, an upper magnetic suction plate, a lower magnetic suction plate, a bottom positioning plate, and a positioning frame. The lower end of the positioning frame is mounted on the upper front side of the bottom positioning plate, the upper end of the bottom positioning plate is mounted on the lower bottom of the lower magnetic suction plate, and the mating groove is formed on the upper rear side of the connector.

[0006] In a preferred embodiment, the anti-rebound isolation assembly includes: a damping spring assembly, a positioning welding block, a moving groove, a front extrusion plate, a front pushing protective baffle, and a connecting docking plate, wherein the lower end of the connecting docking plate is installed inside the upper end of the docking groove.

[0007] In a preferred embodiment, the upper end of the lower magnetic suction plate can be adsorbed and mounted on the lower end of the upper magnetic suction plate, the upper end of the upper magnetic suction plate is fixedly mounted on the lower rear side of the stationary contact body, and the lower front side of the stationary contact body is mounted on the upper end of the flipping arc block.

[0008] In a preferred embodiment, the lower end of the flipping arc block is rotatably mounted on the upper end of the rotating shaft, and both sides of the rotating shaft are rotatably mounted on the upper end of the positioning frame.

[0009] In a preferred embodiment, the lower end of the front extrusion plate is installed at the rear end of the front push protective baffle. The front extrusion plate is L-shaped. The upper rear side of the front extrusion plate is movably installed at both ends of the moving groove. The moving groove is opened at both ends of the positioning welding block. The lower end of the positioning welding block is installed at the upper end of the connector.

[0010] In a preferred embodiment, the rear side of the front extrusion plate is mounted on the front end of the damping spring assembly, the rear end of the damping spring assembly is mounted on the lower end of the front side of the positioning welding block, and the lower end of the forward pushing protective baffle moves to fit against the upper end of the connecting dock plate.

[0011] The technical effects and advantages of this utility model are as follows: A new type of anti-closing rebound stationary contact, compared with the prior art, has a stationary contact body that rotates after bouncing via a rotating shaft and a flipping arc block at its lower end. After the flipping arc block rotates, the stationary contact body is attracted and connected by an upper magnetic suction plate and a lower magnetic suction plate at its rear end. When the upper magnetic suction plate and the lower magnetic suction plate are attracted and connected, a certain resistance is achieved, reducing the rebound speed of the stationary contact body and further enhancing the rebound protection performance of the entire device, thus greatly improving the anti-closing stability of the entire device. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the static contact rebound protection device of this utility model.

[0014] Figure 3 This is a schematic diagram of the bouncing component structure of this utility model.

[0015] Figure 4 This is a schematic diagram of the anti-rebound isolation component of this utility model.

[0016] The attached figures are labeled as follows: 1. Connector; 2. Stationary contact bounce protection device; 21. Bounce assembly; 211. Stationary contact body; 212. Docking groove; 213. Upper magnetic suction plate; 214. Lower magnetic suction plate; 215. Bottom positioning plate; 216. Flipping arc block; 217. Rotating shaft; 218. Positioning frame; 22. Anti-bounce isolation assembly; 221. Front compression plate; 222. Front push protective baffle; 223. Positioning welding block; 224. Moving groove; 225. Damping spring assembly; 226. Connecting docking plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] As attached Figure 1-4 As shown, this utility model provides an anti-closing rebound stationary contact, including a connector 1. The upper end of the connector 1 is provided with a stationary contact rebound protection device 2. The stationary contact rebound protection device 2 includes a bounce component 21 and an anti-rebound isolation component 22. The anti-rebound isolation component 22 is provided at the upper and lower ends of the connector 1, and the bounce component 21 is provided at the front end of the anti-rebound isolation component 22.

[0019] The bouncing assembly 21 includes: a rotating shaft 217, a mating groove 212, a flipping arc block 216, a stationary contact body 211, an upper magnetic suction plate 213, a lower magnetic suction plate 214, a bottom positioning plate 215, and a positioning frame 218. The lower end of the positioning frame 218 is installed on the upper front side of the bottom positioning plate 215, and the upper end of the bottom positioning plate 215 is installed on the lower end of the lower magnetic suction plate 214. The mating groove 212 is opened on the upper rear side of the connector 1. The upper end of the lower magnetic suction plate 214 can be attached to the lower end of the upper magnetic suction plate 213. The upper end of the upper magnetic suction plate 213 is fixedly installed on the lower rear side of the stationary contact body 211. The lower front side of the stationary contact body 211 is installed on the upper end of the flipping arc block 216. The lower end of the flipping arc block 216 is rotatably installed on the upper end of the rotating shaft 217. The two sides of the rotating shaft 217 are rotatably installed on the upper end of the positioning frame 218.

[0020] The anti-rebound isolation assembly 22 includes: a damping spring assembly 225, a positioning welding block 223, a moving groove 224, a front extrusion plate 221, a front pushing protective baffle 222, and a connecting docking plate 226. The lower end of the connecting docking plate 226 is installed inside the upper end of the docking groove 212. The lower end of the front extrusion plate 221 is installed at the rear end of the front pushing protective baffle 222. The front extrusion plate 221 is L-shaped. The rear side of the upper end of the front extrusion plate 221 is movably installed at both ends of the moving groove 224. The moving groove 224 is opened at both ends of the positioning welding block 223. The lower end of the positioning welding block 223 is installed at the upper end of the connector 1. The rear side of the front extrusion plate 221 is installed at the front end of the damping spring assembly 225. The rear end of the damping spring assembly 225 is installed at the lower end of the front side of the positioning welding block 223. The lower end of the front pushing protective baffle 222 is movably attached to the upper end of the connecting docking plate 226.

[0021] The specific implementation method is as follows: When using this utility model, the front end of the forward-pushing protective baffle 222 provided at the upper end can be pressed against the front end of the stationary contact body 211. After the stationary contact body 211 bounces upon contact, the front end of the forward-pushing protective baffle 222 loses its obstruction and is pressed by the damping spring assembly 225 provided at the rear end. After the damping spring assembly 225 completes the pressing and pushing, it drives the front pressing plate 221 provided at the front end to move forward. After the front pressing plate 221 and the forward-pushing protective baffle 222 complete the sealing work on the upper end of the connecting plate 226, it can effectively prevent the stationary contact body 211 from closing, rebounding, and making re-contact. The problem of damage to the stationary contact body 211 caused by the connection plate 226 leading to re-connection is addressed by the stationary contact body 211 rotating via the rotating shaft 217 and the flipping arc block 216 at the lower end after bouncing. After the flipping arc block 216 rotates, the stationary contact body 211 is attracted and connected by the upper magnetic suction plate 213 and the lower magnetic suction plate 214 at the rear end. When the upper magnetic suction plate 213 and the lower magnetic suction plate 214 are attracted and connected, a certain resistance is achieved, reducing the rebound speed of the stationary contact body 211, further enhancing the rebound protection performance of the entire device, and greatly improving the anti-closing stability of the entire device.

[0022] The working principle of this utility model is as follows: When using this utility model, the front end of the forward-pushing protective baffle 222 at the upper end is pressed against the front end of the stationary contact body 211. After the stationary contact body 211 bounces upon contact, the front end of the forward-pushing protective baffle 222 loses its obstruction and is pressed by the damping spring group 225 at the rear end. After the damping spring group 225 pushes and pushes, it drives the front pressing plate 221 at the front end to move forward. After the front pressing plate 221 and the forward-pushing protective baffle 222 have completed the sealing work on the upper end of the connecting plate 226, it can effectively prevent the stationary contact body 211 from closing and rebounding and re-contacting the connecting plate 226, which would cause damage to the stationary contact body 211 during re-connection. After bouncing, the stationary contact body 211 rotates through the rotating shaft 217 and the flipping arc block 216 at the lower end. After the flipping arc block 216 rotates, the stationary contact body 211 is attracted and connected by the upper magnetic suction plate 213 and the lower magnetic suction plate 214 at the rear end.

[0023] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. In conclusion, 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, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A latchback-preventing female contact comprising a connector (1), characterized in that: The connector (1) is provided with a stationary contact bounce protection device (2) at its upper end; The static contact bounce protection device (2) includes: a bounce component (21) and an anti-bounce isolation component (22). The anti-bounce isolation component (22) is disposed at the upper and lower ends of the connector (1), and the bounce component (21) is disposed at the front end of the anti-bounce isolation component (22).

2. The anti-closing rebound stationary contact according to claim 1, characterized in that: The bouncing assembly (21) includes: a rotating shaft (217), a mating groove (212), a flipping arc block (216), a stationary contact body (211), an upper magnetic suction plate (213), a lower magnetic suction plate (214), a bottom positioning plate (215), and a positioning frame (218). The lower end of the positioning frame (218) is installed on the upper front side of the bottom positioning plate (215), and the upper end of the bottom positioning plate (215) is installed on the lower end of the lower magnetic suction plate (214). The mating groove (212) is opened on the upper rear side of the connector (1).

3. The anti-closing rebound stationary contact according to claim 2, characterized in that: The anti-rebound isolation assembly (22) includes: a damping spring assembly (225), a positioning welding block (223), a moving groove (224), a front extrusion plate (221), a front pushing protective baffle (222), and a connecting docking plate (226), the lower end of which is installed inside the upper end of the docking groove (212).

4. The anti-closing rebound stationary contact according to claim 2, characterized in that: The upper end of the lower magnetic suction plate (214) can be attached to the lower end of the upper magnetic suction plate (213). The upper end of the upper magnetic suction plate (213) is fixedly installed on the lower rear side of the stationary contact body (211). The lower front side of the stationary contact body (211) is installed on the upper end of the flipping arc block (216).

5. A stationary contact for preventing backflow during closure according to claim 2, characterized in that: The lower end of the flipping arc block (216) is rotatably mounted on the upper end of the rotating shaft (217), and the two sides of the rotating shaft (217) are rotatably mounted on the upper end of the positioning frame (218).

6. A stationary contact for preventing backflow during closure according to claim 3, characterized in that: The lower end of the front extrusion plate (221) is installed at the rear end of the front push protective baffle (222). The front extrusion plate (221) is L-shaped. The upper rear side of the front extrusion plate (221) is movably installed at both ends of the moving groove (224). The moving groove (224) is opened at both ends of the positioning welding block (223). The lower end of the positioning welding block (223) is installed at the upper end of the connector (1).

7. A stationary contact with anti-closing rebound as described in claim 3, characterized in that: The front extrusion plate (221) is mounted on the rear side of the damping spring assembly (225) at the front end, the rear end of the damping spring assembly (225) is mounted on the lower front side of the positioning welding block (223), and the lower end of the forward pushing protective baffle (222) moves to fit against the upper end of the connecting docking plate (226).

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