CN201918328U - Arc striking structure of miniature circuit breaker - Google Patents
Arc striking structure of miniature circuit breaker Download PDFInfo
- Publication number
- CN201918328U CN201918328U CN201120005038XU CN201120005038U CN201918328U CN 201918328 U CN201918328 U CN 201918328U CN 201120005038X U CN201120005038X U CN 201120005038XU CN 201120005038 U CN201120005038 U CN 201120005038U CN 201918328 U CN201918328 U CN 201918328U
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- Prior art keywords
- arc striking
- arc
- striking
- contact
- tab
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Abstract
The utility model discloses an arc striking structure of a miniature circuit breaker. The arc striking structure comprises an arc extinguishing chamber, a movable contact, a fixed contact and an arc striking piece, wherein the arc striking piece consists of an arc striking plate and an arc striking bracket both adopt split-type structures; the extending end of the arc striking plate is in contact with that of the arc striking bracket; the contact top of the extending ends of both the arc striking plate and the arc striking bracket is close to the lower end surface of the movable contact; and the other end of the arc striking plate is connected with the arc extinguishing chamber. In the utility model, as the contact top of the extending ends of both the arc striking plate and the arc striking bracket is close to the lower end surface of the movable contact (a smaller distance is reversed therebetween), once short circuit of the power grid occurs, an arc striking piece can timely and quickly lead electric arcs generated during disjunction of the movable contact and the fixed contact into the arc-extinguishing chamber, so as to effectively protect a power grid or equipment in a circuit.
Description
Technical field
The utility model relates to a kind of arc-striking structure, especially a kind of arc-striking structure of miniature circuit breaker.
Background technology
Circuit breaker is mainly born overload, the under voltage of distribution line and equipment, the usefulness of short-circuit protection.Under normal circumstances; the contact system of circuit breaker is closed or disconnect the circuit of supply electric energy under the control of operating mechanism, to reach the purpose of power failure, power supply and change-over circuit, when electrical network occurs under the short-circuit conditions; need contact branch deenergizing timely, protect electrical network or equipment.And existing miniature circuit breaker as shown in Figure 1, its arc-striking structure comprises arc control device, moving contact, fixed contact, striking sheet, described striking sheet is an elastic sheet metal, the middle part of striking sheet is folded into the V shape, and the V shape top of striking sheet and the lower surface spacing of moving contact are excessive, and the electric arc that produces in the time of can't be in time with moving contact and fixed contact disjunction is introduced arc control device.
Summary of the invention
At the deficiencies in the prior art, the utility model provides a kind of electric arc that produces can be in time with moving contact and fixed contact disjunction the time to introduce the arc-striking structure of the miniature circuit breaker of arc control device.
For achieving the above object, the utility model provides a kind of arc-striking structure of miniature circuit breaker, comprise arc control device, moving contact, fixed contact, striking sheet, described striking sheet is made up of run-on tab and striking support, described run-on tab and striking support are the split setting, and the elongated end of run-on tab becomes to contact shape with the elongated end of striking support.
What the utility model can further be set to run-on tab elongated end and striking support elongated end contacts the lower surface of top near moving contact.
The other end that the utility model also can further be set to described run-on tab is connected with arc control device.
It is a sheet metal that the utility model also can further be set to described run-on tab.
The beneficial effects of the utility model are: because described striking sheet is made up of run-on tab and striking support; and run-on tab and striking support are the split setting; the elongated end of run-on tab becomes to contact shape with the elongated end of striking support; run-on tab elongated end and striking support elongated end contact the lower surface of top near moving contact; so in case electrical network is short-circuited; the electric arc that the striking sheet produces in the time of can be in time apace with moving contact and fixed contact disjunction is introduced arc control device, has protected electrical network or the equipment in the circuit effectively.
Description of drawings
Fig. 1 is the prior art constructions schematic diagram;
Fig. 2 is a structural representation of the present utility model.
Embodiment
Provided a kind of arc-striking structure of miniature circuit breaker as shown in Figure 2, comprise arc control device 1, moving contact 2, fixed contact 3, striking sheet 4, described striking sheet 4 is made up of run-on tab 41 and striking support 42, described run-on tab 41 is a sheet metal, and described run-on tab 41 is the split setting with striking support 42, the elongated end 411 of run-on tab 41 contacts shape for 421 one-tenth with the elongated end of striking support 42, run-on tab elongated end 411 and striking support elongated end 421 contact the lower surface of top near moving contact 2, the other end 412 of described run-on tab 41 is connected with arc control device 1.
Owing to the lower surface that contact top close moving contact 2 of run-on tab elongated end 411 with striking support elongated end 421; spacing between the two is less; so in case electrical network is short-circuited; the electric arc that striking sheet 4 can be in time produces moving contact 2 during with fixed contact 3 disjunctions is apace introduced arc control device 1, has protected electrical network or the equipment in the circuit effectively.
Claims (5)
1. the arc-striking structure of a miniature circuit breaker, comprise arc control device, moving contact, fixed contact, striking sheet, it is characterized in that: described striking sheet is made up of run-on tab and striking support, described run-on tab and striking support are the split setting, and the elongated end of run-on tab becomes to contact shape with the elongated end of striking support.
2. the arc-striking structure of miniature circuit breaker according to claim 1 is characterized in that: run-on tab elongated end and striking support elongated end contact the lower surface of top near moving contact.
3. the arc-striking structure of miniature circuit breaker according to claim 1 and 2, it is characterized in that: the other end of described run-on tab is connected with arc control device.
4. the arc-striking structure of miniature circuit breaker according to claim 1 and 2, it is characterized in that: described run-on tab is a sheet metal.
5. the arc-striking structure of miniature circuit breaker according to claim 3, it is characterized in that: described run-on tab is a sheet metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120005038XU CN201918328U (en) | 2011-01-10 | 2011-01-10 | Arc striking structure of miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120005038XU CN201918328U (en) | 2011-01-10 | 2011-01-10 | Arc striking structure of miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201918328U true CN201918328U (en) | 2011-08-03 |
Family
ID=44418120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120005038XU Expired - Fee Related CN201918328U (en) | 2011-01-10 | 2011-01-10 | Arc striking structure of miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201918328U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102760621A (en) * | 2012-03-23 | 2012-10-31 | 湖北盛佳电器设备有限公司 | Circuit breaker capable of improving breaking capacity |
| CN103426669A (en) * | 2013-09-02 | 2013-12-04 | 华坤电气有限公司 | Run-on plate |
-
2011
- 2011-01-10 CN CN201120005038XU patent/CN201918328U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102760621A (en) * | 2012-03-23 | 2012-10-31 | 湖北盛佳电器设备有限公司 | Circuit breaker capable of improving breaking capacity |
| CN102760621B (en) * | 2012-03-23 | 2016-06-08 | 湖北盛佳电器设备有限公司 | A kind of isolating switch that can improve breaking capacity |
| CN103426669A (en) * | 2013-09-02 | 2013-12-04 | 华坤电气有限公司 | Run-on plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20140110 |