CN202855680U - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
- Publication number
- CN202855680U CN202855680U CN 201220569364 CN201220569364U CN202855680U CN 202855680 U CN202855680 U CN 202855680U CN 201220569364 CN201220569364 CN 201220569364 CN 201220569364 U CN201220569364 U CN 201220569364U CN 202855680 U CN202855680 U CN 202855680U
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- CN
- China
- Prior art keywords
- arc
- contact
- tab
- run
- circuit breaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to a circuit breaker. The circuit breaker comprises a housing. An operating system, an electromagnetic system, a contact system and an arc extinguishing system are arranged in the housing. The contact system comprises a fixed contact and a moving contact, wherein the moving contact is controlled by the operating system and can be in contact with the fixed contact. The arc extinguishing system comprises an arc extinguishing chamber, wherein an arc extinguishing chute is arranged in the arc extinguishing chamber, an arc striking plate is arranged between the fixed contact and the arc extinguishing chamber, one end of the arc striking plate serves as the arc striking end and is welded with the fixed contact, the other end of the arc striking plate serves as the arc extinguishing end and is electrically connected with the arc extinguishing chute, the arc striking plate is provided with bending portions near the arc striking end, and the bending portions form an arc striking angle, wherein the arc striking angle is 105 degrees. By adopting the above-mentioned technical scheme, the utility model provides a circuit breaker having the advantage of good arc extinguishing effect.
Description
Technical field
The utility model is specifically related to a kind of circuit breaker.
Background technology
Circuit breaker refers to close and closes, carries and cut-off electric current under the normal loop condition, and can close close, in the in setting time carrying with cut-off the switching device of the electric current under the unusual loop condition.Circuit breaker is carried out protection to power circuit and motor etc.; can automatic shutdown circuit when serious overload or short circuit and the fault such as under-voltage occur for their; its function is equivalent to the combination of Fuse switch and mistake underheat relay etc., and does not generally need to change parts behind the disjunction fault current.At present, circuit breaker obtains a wide range of applications.Present circuit breaker comprises operating system, electromagnetic system, contact system and arc quenching system, wherein, arc quenching system comprises arc control device, the contact system comprises movable contact spring and static contact, consist of by run-on tab between arc control device and the static contact and is electrically connected, yet traditional run-on tab is because planform designs unreasonable, cause sometimes that electric arc can not normally enter arc control device and cause damage of product, reduce the life-span of whole circuit breaker.
Summary of the invention
For the deficiency that prior art exists, the circuit breaker that provides a kind of arc quenching effect good is provided the purpose of this utility model.
For achieving the above object, the utility model provides following technical scheme: comprise housing, be provided with operating system in the housing, electromagnetic system, contact system and arc quenching system, described contact system comprises fixed contact and moving contact, described moving contact can be contacted with fixed contact by operating system control, described arc quenching system comprises arc control device, be provided with arc extinguishing grid pieces in the described arc control device, it is characterized in that: be provided with run-on tab between described fixed contact and the arc control device, described run-on tab one end welds mutually as arc end and fixed contact, the other end is electrically connected with arc extinguishing grid pieces as the arc extinguishing end, described run-on tab is provided with bending near the position of arc end, described bending consists of arc leading angle, and the size of described arc leading angle is 105 °.
By adopting technique scheme, position near arc end is provided with bending formation arc leading angle, makes the striking better effects if of run-on tab, preferred 105 ° of the arc leading angle here, the striking effect is further improved, prevent that electric arc from can not normally enter arc control device and cause damage of product.
The utility model further is set to: described run-on tab overlaps length with the static contact welding and accounts for 1/4 of run-on tab total length.
By adopting technique scheme, lengthen before the length of run-on tab and static contact is compared, and preferred run-on tab total length 1/4, the striking path is reduced, the time reduces, and improves striking efficient.
The utility model further is set to: be folded with flash barrier between described arc control device and the electromagnetic system.
By adopting technique scheme, the setting of flash barrier makes electric arc can not go out arc control device and electromagnetic system is damaged.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the cooperation schematic diagram of static contact and run-on tab in the utility model.
Embodiment
Such as Fig. 1-shown in Figure 2, the utility model discloses a kind of circuit breaker, comprise housing 6, be provided with operating system 1 in the housing 6, electromagnetic system 2, contact system 3 and arc quenching system 4, contact system 3 comprises fixed contact 31 and moving contact 32, moving contact 32 can be contacted with fixed contact 31 by operating system 1 control, arc quenching system 4 comprises arc control device 41,41 are provided with arc extinguishing grid pieces 42 in the arc control device, be provided with run-on tab 43 between fixed contact 31 and the arc control device 4, run-on tab 43 1 ends weld mutually as arc end 431 and fixed contact 31, the other end is electrically connected with arc extinguishing grid pieces 42 as arc extinguishing end 432, and run-on tab 43 is provided with bending 432 near the position of arc end 431, and bending 432 consists of arc leading angle α, the size of arc leading angle α is 105 °, position near arc end 431 is provided with bending 432 formation arc leading angle α, makes the striking better effects if of run-on tab 43, preferred 105 ° of the arc leading angle α here, the striking effect is further improved, prevent that electric arc from can not normally enter arc control device 41 and cause damage of product.
31 welding of run-on tab 43 and static contact overlap length and account for 1/4 of run-on tab 43 total lengths, lengthen before the length of run-on tab 43 and static contact 31 is compared, and preferred run-on tab 43 total lengths 1/4, the striking path is reduced, the time reduces, raising striking efficient.
Be folded with flash barrier 44 between arc control device 41 and the electromagnetic system 2, the setting of flash barrier 44 makes electric arc can not go out arc control device 41 and electromagnetic system 2 is damaged.
Claims (3)
1. circuit breaker, comprise housing, be provided with operating system in the housing, electromagnetic system, contact system and arc quenching system, described contact system comprises fixed contact and moving contact, described moving contact can be contacted with fixed contact by operating system control, described arc quenching system comprises arc control device, be provided with arc extinguishing grid pieces in the described arc control device, it is characterized in that: be provided with run-on tab between described fixed contact and the arc control device, described run-on tab one end welds mutually as arc end and fixed contact, the other end is electrically connected with arc extinguishing grid pieces as the arc extinguishing end, described run-on tab is provided with bending near the position of arc end, described bending consists of arc leading angle, and the size of described arc leading angle is 105 °.
2. circuit breaker according to claim 1 is characterized in that: described run-on tab overlaps length with the static contact welding and accounts for 1/4 of run-on tab total length.
3. circuit breaker according to claim 1 and 2 is characterized in that: be folded with flash barrier between described arc control device and the electromagnetic system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220569364 CN202855680U (en) | 2012-10-31 | 2012-10-31 | Circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220569364 CN202855680U (en) | 2012-10-31 | 2012-10-31 | Circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202855680U true CN202855680U (en) | 2013-04-03 |
Family
ID=47986849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220569364 Expired - Fee Related CN202855680U (en) | 2012-10-31 | 2012-10-31 | Circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202855680U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108766847A (en) * | 2018-04-20 | 2018-11-06 | 上海良信电器股份有限公司 | A kind of contact arc extinguishing device of breaker |
-
2012
- 2012-10-31 CN CN 201220569364 patent/CN202855680U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108766847A (en) * | 2018-04-20 | 2018-11-06 | 上海良信电器股份有限公司 | A kind of contact arc extinguishing device of breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20161031 |