CN211858454U - Switch arc striking device - Google Patents
Switch arc striking device Download PDFInfo
- Publication number
- CN211858454U CN211858454U CN202020773965.5U CN202020773965U CN211858454U CN 211858454 U CN211858454 U CN 211858454U CN 202020773965 U CN202020773965 U CN 202020773965U CN 211858454 U CN211858454 U CN 211858454U
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- contact
- auxiliary contact
- auxiliary
- switch
- finger
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a switch arc striking device, wherein the connecting bridge of two contact pieces at the lower end of a static contact is connected with an auxiliary contact finger through a rotating shaft, one end of a spring is connected with the root of one end of the auxiliary contact finger, and the other end of the spring is fixed with the bottom of the contact piece of the static contact; the end part of the moving contact is provided with a convex part, the bottom of the convex part is provided with an auxiliary contact, and the auxiliary contact corresponds to the position of the auxiliary contact finger; and copper-tungsten alloy layers are arranged on the surfaces of the auxiliary contact fingers and the auxiliary contacts. The utility model has the advantages that: when the switch is switched on, the auxiliary contact and the auxiliary contact finger are in priority contact with the main conductor, and when the switch is switched off, the auxiliary contact and the auxiliary contact finger are separated from the main conductor slowly and finally, so that the main conductor is not damaged by strong current when the switch is switched on and switched off, and the function of current interruption protection is achieved.
Description
Technical Field
The utility model relates to a power equipment technical field specifically is a switch.
Background
A circuit breaker generally switches on and off current by making and breaking contact between two contacts; because of bearing higher voltage and larger current, electric arcs are often generated at the moment when the switch is required to be contacted and disconnected, and the electric arcs have higher temperature and are easy to damage the surfaces of the moving contact and the static contact.
Disclosure of Invention
In order to solve the above technical problem, an object of the present invention is to provide a switch arc striking device, wherein a connecting bridge of two contact pieces at the lower end of a static contact is connected to a secondary contact finger through a rotating shaft, one end of a spring is connected to the root of one end of the secondary contact finger, and the other end of the spring is fixed to the bottom of the contact piece of the static contact; the end part of the moving contact is provided with a convex part, the bottom of the convex part is provided with an auxiliary contact, and the auxiliary contact corresponds to the position of the auxiliary contact finger; and copper-tungsten alloy layers are arranged on the surfaces of the auxiliary contact fingers and the auxiliary contacts.
The width of the bulge is larger than the width between the two contact pieces of the static contact.
The static contact and the moving contact are both arranged on a turntable, and the turntable is driven to rotate by a driving device.
The utility model has the advantages that: when the switch is switched on, the auxiliary contact and the auxiliary contact finger are in priority contact with the main conductor, and when the switch is switched off, the auxiliary contact and the auxiliary contact finger are separated from the main conductor slowly and finally, so that the main conductor is not damaged by strong current when the switch is switched on and switched off, and the function of current interruption protection is achieved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a top view of fig. 1.
Detailed Description
The present invention is described in detail with reference to the accompanying drawings, as shown in the drawings, the connecting bridge 41 of two contact plates 42 at the lower end of the static contact 4 is connected with the auxiliary contact finger 1 through the rotating shaft 6, one end of the spring 3 is connected with the root of the auxiliary contact finger 1, and the other end of the spring is fixed with the bottom of the contact plate of the static contact (i.e. the lower part of fig. 1); a raised part 51 is arranged at the end part of the movable contact 5, an auxiliary contact 2 is arranged at the bottom (namely the lower part of the figure 1) of the raised part 51, and the auxiliary contact 2 corresponds to the position of the auxiliary contact finger 1; and copper-tungsten alloy layers are arranged on the surfaces of the auxiliary contact finger 1 and the auxiliary contact 2.
The width of the convex part 51 is larger than the width between the two contact pieces 42 of the static contact.
The static contact 4 and the moving contact 5 are both arranged on a turntable 7, and the turntable is driven to rotate by a driving device. The driving device may be a commercially available product.
Claims (3)
1. A switch arc striking device is characterized in that: the connecting bridge of two contact pieces at the lower end of the static contact is connected with the auxiliary contact finger through the rotating shaft, one end of the spring is connected with the root of one end of the auxiliary contact finger, and the other end of the spring is fixed with the bottom of the contact piece of the static contact; the end part of the moving contact is provided with a convex part, the bottom of the convex part is provided with an auxiliary contact, and the auxiliary contact corresponds to the position of the auxiliary contact finger; and copper-tungsten alloy layers are arranged on the surfaces of the auxiliary contact fingers and the auxiliary contacts.
2. A switch ignition device according to claim 1, characterized in that: the width of the bulge is larger than the width between the two contact pieces of the static contact.
3. A switch ignition device according to claim 1, characterized in that: the static contact and the moving contact are both arranged on a turntable, and the turntable is driven to rotate by a driving device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020773965.5U CN211858454U (en) | 2020-05-12 | 2020-05-12 | Switch arc striking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020773965.5U CN211858454U (en) | 2020-05-12 | 2020-05-12 | Switch arc striking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211858454U true CN211858454U (en) | 2020-11-03 |
Family
ID=73177903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020773965.5U Active CN211858454U (en) | 2020-05-12 | 2020-05-12 | Switch arc striking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211858454U (en) |
-
2020
- 2020-05-12 CN CN202020773965.5U patent/CN211858454U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |