CN203192729U - Miniature circuit breaker with dual arc extinguishing functions - Google Patents
Miniature circuit breaker with dual arc extinguishing functions Download PDFInfo
- Publication number
- CN203192729U CN203192729U CN 201320204742 CN201320204742U CN203192729U CN 203192729 U CN203192729 U CN 203192729U CN 201320204742 CN201320204742 CN 201320204742 CN 201320204742 U CN201320204742 U CN 201320204742U CN 203192729 U CN203192729 U CN 203192729U
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- CN
- China
- Prior art keywords
- control device
- arc extinguishing
- arc control
- circuit breaker
- arc
- 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 miniature circuit breaker with dual arc extinguishing functions. The miniature circuit breaker is mainly used for solving problems of a conventional miniature circuit breaker that the arc extinguishing efficiency is low and the stability is poor, and contacts are liable to burn out. An auxiliary arc extinguishing chamber (8) is disposed behind a main arc extinguishing chamber (6) on a housing (2); and an end tab (7) is disposed between the main arc extinguishing chamber (6) and the auxiliary arc extinguishing chamber (8), wherein one end of the end tab (7) corresponds to the back end of the main arc extinguishing chamber (6), and the other end of the end tab (7) corresponds to the front end of the auxiliary arc extinguishing chamber (8). The miniature circuit breaker has the advantages of high safety, excellent stability and prolonged service life.
Description
Technical field
The utility model relates to a kind of circuit breaker, refers in particular to a kind of miniature circuit breaker with dual arc extinguishing function.
Background technology
At present, miniature circuit breaker mainly comprises operating mechanism, contact system, release and arc-control device etc.Arc-control device is made up of arc control device and run-on tab, the U-shaped or V-type grid sheet that arc control device are made by ferromagnetic material and assembled by at least one side plate that insulating material is made.When miniature circuit breaker divides deenergizing to produce electric arc, because the existence of grid sheet, the magnetic flux path that arc current produces in the air around distorts, magnetized grid sheet produces a kind of electromagnetic force electric arc is pulled to arc control device, to the cutting apart and cool off of electric arc, arc resistance increases by the grid sheet, thereby arc voltage also improves, when arc voltage reached certain value, electric arc will be extinguished.
Existing miniature circuit breaker, because overall dimensions size restriction, generally be provided with arc control device in the arc-control device, when the contact system disjunction, a large amount of electric arcs of generation are all by this arc control device arc extinguishing, but when or short circuit big when voltage, easily produce a large amount of electric arc, only depend on arc control device can not satisfy the needs of arc extinguishing far away, it is excessive that electric arc easily takes place, puncture watchcase, have serious potential safety hazard.
The utility model content
In order to overcome deficiency and the defective in the background technology, the utility model provides a kind of miniature circuit breaker with dual arc extinguishing function, mainly solves existing miniature circuit breaker and has low, the poor stability of arc extinguishing efficient, the problem of easily burning contact in use.
The technical solution of the utility model is: a kind of miniature circuit breaker with dual arc extinguishing function, comprise housing, and be arranged on operating mechanism in the housing, contact system and main arc control device, described contact system comprises moving contact and fixed contact, be provided with a plurality of main arc extinguishing grid pieces at interval that have in the described main arc control device, described main arc extinguishing grid pieces upper end is provided with V-arrangement striking mouth, the rear side of corresponding main arc control device is provided with secondary arc control device on the described housing, be provided with run-on tab between described main arc control device and the secondary arc control device, described run-on tab one end is corresponding with main arc control device rear end, and the other end is corresponding with secondary arc control device front end.
Described run-on tab is provided with many, is extend side by side to secondary arc control device front end by main arc control device rear side.
Described secondary arc control device reach a plurality of intervals and are embedded in the secondary arc extinguishing grid pieces of installing on the version respectively by mounting panel, and described secondary arc extinguishing grid pieces is provided with U-shaped striking mouth.
The beneficial effects of the utility model: owing to take such scheme, miniature circuit breaker with dual arc extinguishing function of the present utility model, front and back arrange two arc control device, when the short circuit breaking circuit, absorb a large amount of electric arcs of disjunction generation at main arc control device after, absorb remaining electric arc by arc control device, effectively prevent device damage, have safe, stablize the characteristics that reach long service life.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of secondary arc extinguishing grid pieces among Fig. 1.
Among the figure, 1-operating mechanism, 2-housing, 3-fixed contact, 4-moving contact, 5-master's arc extinguishing grid pieces, 6-master's arc control device, 7-run-on tab, the secondary arc control device of 8-, 9-mounting panel, the secondary arc extinguishing grid pieces of 91-, 92-U shape striking mouth.
Embodiment
At accompanying drawing embodiment of the present utility model is described further below:
Shown in figure, this has the miniature circuit breaker of dual arc extinguishing function, comprise housing 2, and be arranged on operating mechanism 1 in the housing 2, contact system and main arc control device 6, described contact system comprises moving contact 4 and fixed contact 3, be provided with a plurality of main arc extinguishing grid pieces 5 at interval that have in the described main arc control device 6, described main arc extinguishing grid pieces 5 upper ends are provided with V-arrangement striking mouth, the rear side of corresponding main arc control device 6 is provided with secondary arc control device 8 on the described housing 2, be provided with run-on tab 7 between described main arc control device 6 and the secondary arc control device 8, described run-on tab 7 one ends are corresponding with main arc control device 6 rear ends, and the other end is corresponding with secondary arc control device 8 front ends.Front and back arrange two arc control device, when importing high voltage and current or short circuit breaking circuit suddenly, behind a large amount of electric arcs that main arc control device absorption disjunction produces, absorb remaining electric arc by arc control device, effectively prevent device damage, have safe, stablize the characteristics that reach long service life.
Described run-on tab 7 is provided with many, is extend side by side to secondary arc control device 8 front ends by main arc control device 6 rear sides.As preferably, described run-on tab is provided with two side by side, and the electric arc behind an arc extinguishing guides to main arc control device tail end with arc extinguishing grid pieces, and many striking sheets of setting can effectively guide to electric arc secondary arc control device, and it is fast to play striking speed, the effect that arc extinguishing efficient is high.
Described secondary arc control device 8 reach a plurality of intervals and are embedded in the secondary arc extinguishing grid pieces of installing on the version 91 respectively by mounting panel 9, and described secondary arc extinguishing grid pieces 91 is provided with U-shaped striking mouth 92.The secondary arc extinguishing grid pieces that the band U-shaped is set has the electric arc self-locking, prevents the effect of electric arc play, has guaranteed fail safe and arc extinguishing stability.
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 (3)
1. miniature circuit breaker with dual arc extinguishing function, comprise housing (2), and be arranged on operating mechanism (1) in the housing (2), contact system and main arc control device (6), described contact system comprises moving contact (4) and fixed contact (3), be provided with a plurality of main arc extinguishing grid pieces (5) at interval that have in the described main arc control device (6), described main arc extinguishing grid pieces (5) upper end is provided with V-arrangement striking mouth, it is characterized in that: the rear side that described housing (2) is gone up corresponding main arc control device (6) is provided with secondary arc control device (8), be provided with run-on tab (7) between described main arc control device (6) and the secondary arc control device (8), described run-on tab (7) one ends are corresponding with main arc control device (6) rear end, and the other end is corresponding with secondary arc control device (8) front end.
2. the miniature circuit breaker with dual arc extinguishing function according to claim 1, it is characterized in that: described run-on tab (7) is provided with many, is extend side by side to secondary arc control device (8) front end by main arc control device (6) rear side.
3. the miniature circuit breaker with dual arc extinguishing function according to claim 1, it is characterized in that: described secondary arc control device (8) are respectively by mounting panel (9), reach a plurality of intervals and be embedded in the secondary arc extinguishing grid pieces of installing on the version (91), described secondary arc extinguishing grid pieces (91) is provided with U-shaped striking mouth (92).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320204742 CN203192729U (en) | 2013-04-22 | 2013-04-22 | Miniature circuit breaker with dual arc extinguishing functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320204742 CN203192729U (en) | 2013-04-22 | 2013-04-22 | Miniature circuit breaker with dual arc extinguishing functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203192729U true CN203192729U (en) | 2013-09-11 |
Family
ID=49109567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320204742 Expired - Fee Related CN203192729U (en) | 2013-04-22 | 2013-04-22 | Miniature circuit breaker with dual arc extinguishing functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203192729U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108269709A (en) * | 2017-01-03 | 2018-07-10 | 浙江正泰电器股份有限公司 | The arc-chutes of breaker |
-
2013
- 2013-04-22 CN CN 201320204742 patent/CN203192729U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108269709A (en) * | 2017-01-03 | 2018-07-10 | 浙江正泰电器股份有限公司 | The arc-chutes 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 |
Granted publication date: 20130911 Termination date: 20150422 |
|
| EXPY | Termination of patent right or utility model |