CN203386697U - Miniature circuit breaker - Google Patents
Miniature circuit breaker Download PDFInfo
- Publication number
- CN203386697U CN203386697U CN201320511841.XU CN201320511841U CN203386697U CN 203386697 U CN203386697 U CN 203386697U CN 201320511841 U CN201320511841 U CN 201320511841U CN 203386697 U CN203386697 U CN 203386697U
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- CN
- China
- Prior art keywords
- circuit breaker
- arc
- miniature circuit
- striking
- muscle
- 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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Abstract
The utility model relates to a miniature circuit breaker and mainly solves the problem that when a conventional miniature circuit breaker is used, the arc extinguishing effect is poor as the arc striking efficiency is relatively low. The miniature circuit breaker comprises a shell (1) which is internally provided with an arc extinguishing chamber (2), an operation mechanism, a dynamic contact (3), and a static contact (4). The dynamic contact (3) is fitted with the static contact (4) through the operation mechanism. The shell (1) is provided with multiple stripes of parallelly distributed and mutually isolated arc striking ribs (5). One end of each arc striking rib (5) corresponds to the dynamic contact (3) and the static contact (4), while the other end of each arc striking rib (5) corresponds to the arc distinguishing chamber (2). By additionally arranging the arc striking ribs, each of which has one end corresponded to the contacts and the other end corresponded to the arc extinguishing chamber and which enhance the arc striking efficiency, the miniature circuit breaker is improved in arc extinguishing effect.
Description
Technical field
The utility model relates to a kind of electric protection device, refers in particular to a kind of miniature circuit breaker.
Background technology
Miniature circuit breaker has strong, the aesthetic in appearance characteristics such as small and exquisite of structure advanced person, dependable performance, breaking capacity; be used as office building, house and the similarly overload of illumination, distribution line and the equipment of building and short-circuit protection, also can be used as the use of the frequent make-break operation of circuit and conversion.Be mainly used in the various places such as industry, business, high level and residential houses.At present, the miniature circuit breaker used on market, generally to adopt the metal arc striking piece to carry out striking, what have also is provided with the plastics run-on tab in the middle, in its bottom, iron plate also is installed, and by plastics run-on tab and iron plate, carries out striking, but there is the striking weak effect in it, arc extinguishing efficiency is hanged down shortcoming, but also needs to install, the assembling trouble.
Summary of the invention
For the shortcoming and the weak point that overcome background technology, the utility model provides a kind of miniature circuit breaker, mainly solves existing miniature circuit breaker in use, exists striking efficiency lower, thereby causes the poor problem of arc quenching effect.
The technical solution of the utility model is: a kind of miniature circuit breaker, comprise housing, be provided with arc control device, operating mechanism, moving contact and fixed contact in described housing, described moving contact matches with fixed contact by operating mechanism, described housing is provided with many striking muscle that distribute and mutually isolate side by side, one end of each described striking muscle and moving contact, fixed contact are corresponding, and the other end is corresponding with arc control device.
Described two adjacent striking muscle are stairstepping for being uneven, and each highly lower striking muscle height is identical, and highly higher each striking muscle height is identical.
Described striking muscle is arc.
Described striking muscle and housing integrated injection molding form.
The utlity model has following beneficial effect: due to this miniature circuit breaker, by setting up the striking muscle, corresponding with contact by an end of striking muscle, the other end is corresponding with arc control device, by the striking muscle, strengthens striking efficiency, improves arc quenching effect.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The structural representation that Fig. 2 is the utility model middle shell.
Fig. 3 is the cutaway view A-A in Fig. 2 in the utility model.
In figure, housing 1, arc control device 2, moving contact 3, fixed contact 4, striking muscle 5.
Embodiment
Below for accompanying drawing, embodiment of the present utility model is described further:
Shown in figure, a kind of miniature circuit breaker, comprise housing 1, be provided with arc control device 2 in described housing 1, operating mechanism, moving contact 3 and fixed contact 4, described moving contact 3 matches with fixed contact 4 by operating mechanism, described housing 1 is provided with many striking muscle 5 that distribute and mutually isolate side by side, this striking muscle 5 is strip, one end of each described striking muscle 5 and moving contact 3, fixed contact 4 is corresponding, the other end is corresponding with arc control device 2, described striking muscle 5 is arc, also can adopt bending shape, the preferential arc that adopts, during use, because the striking muscle is at least many, can be arranged as required, adjacent striking muscle 5 is spaced from each other, one end of each striking muscle 5 extends in the zone of moving contact and fixed contact distribution, the other end extends to the import department of arc control device, when moving contact contacts with fixed contact, the spark produced is introduced arc control device by the striking of striking muscle and is carried out arc extinguishing, striking is effective, thereby guarantee arc extinguishing efficiency.
As shown in the figure, described two adjacent striking muscle 5 are stairstepping for being uneven, and each highly low striking muscle 5 is highly identical, and each highly high striking muscle 5 is highly identical.Striking muscle 5 is and is uneven, and can effectively improve the striking effect, guarantees the formedness of arc quenching effect.
As shown in the figure, described striking muscle 5 forms with housing 1 integrated injection molding.Striking muscle 5 processes with housing 1 one, without Assembly of the parts.
Embodiment should not be considered as the restriction to utility model, but any improvement of doing based on spirit of the present utility model, all should be within protection range of the present utility model.
Claims (4)
1. a miniature circuit breaker, comprise housing (1), be provided with arc control device (2), operating mechanism, moving contact (3) and fixed contact (4) in described housing (1), described moving contact (3) matches with fixed contact (4) by operating mechanism, it is characterized in that: described housing (1) is provided with many striking muscle (5) that distribute and mutually isolate side by side, one end of each described striking muscle (5) and moving contact (3), fixed contact (4) are corresponding, and the other end is corresponding with arc control device (2).
2. miniature circuit breaker according to claim 1, it is characterized in that described adjacent two striking muscle (5) are stairstepping for being uneven, and each highly low striking muscle (5) is highly identical, and each highly high striking muscle (5) is highly identical.
3. miniature circuit breaker according to claim 1 and 2, is characterized in that described striking muscle (5) is arc.
4. miniature circuit breaker according to claim 1 and 2, is characterized in that described striking muscle (5) and housing (1) integrated injection molding form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320511841.XU CN203386697U (en) | 2013-08-21 | 2013-08-21 | Miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320511841.XU CN203386697U (en) | 2013-08-21 | 2013-08-21 | Miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203386697U true CN203386697U (en) | 2014-01-08 |
Family
ID=49875155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320511841.XU Expired - Fee Related CN203386697U (en) | 2013-08-21 | 2013-08-21 | Miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203386697U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201074A (en) * | 2014-09-16 | 2014-12-10 | 长城电器集团有限公司 | Energy-saving miniature circuit breaker |
-
2013
- 2013-08-21 CN CN201320511841.XU patent/CN203386697U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201074A (en) * | 2014-09-16 | 2014-12-10 | 长城电器集团有限公司 | Energy-saving miniature circuit 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 |
Granted publication date: 20140108 Termination date: 20160821 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |