CN201174362Y - Small circuit breaker - Google Patents
Small circuit breaker Download PDFInfo
- Publication number
- CN201174362Y CN201174362Y CNU2008200831240U CN200820083124U CN201174362Y CN 201174362 Y CN201174362 Y CN 201174362Y CN U2008200831240 U CNU2008200831240 U CN U2008200831240U CN 200820083124 U CN200820083124 U CN 200820083124U CN 201174362 Y CN201174362 Y CN 201174362Y
- Authority
- CN
- China
- Prior art keywords
- arc
- striking sheet
- circuit breaker
- moving contact
- generating plate
- 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 breaker, in particular to a small-sized breaker, comprising a housing, a movable contact, a fixed contact, an operating mechanism, an electromagnetic tripping mechanism, an arc extinguish chamber, a first arc generating plate and a second arc generating plate, wherein one end of the first arc generating plate is in electric connection with the fixed contact, the other end of the first arc generating plate extends into the arc extinguish chamber, one end of the second arc generating plate is fixed on a magnetic yoke of the electromagnetic tripping mechanism, and the other end of the second arc generating plate points at the movable contact. The small breaker is characterized in that a taper angle is positioned on the second arc generating plate pointing at and close to the end part of the movable contact; therefore, the taper angle has stronger arc generating performance compared with a camber angle, and a voltaic arc of the movable contact is guaranteed to be introduced to the arc extinguish chamber from the second arc generating plate.
Description
Technical field
The utility model relates to a kind of circuit breaker, particularly a kind of miniature circuit breaker.
Background technology
Circuit breaker in use, particularly the contact is just closed or disconnect in a flash when short trouble occurring, can produce electric arc, and generation electric arc easy burn-out circuit breaker even electric arc can spray from the handle of Shell of circuit breaker and the operator be damaged, therefore circuit breaker has arc-control device usually, arc-control device is that arc control device are set in Shell of circuit breaker in general, then the electric arc that is produced is introduced these arc control device and carries out arc extinguishing.In the miniature circuit breaker of now, being used for the striking guide card of striking arc mostly only is arranged on the fixed contact place, be that striking guide card one end is electrically connected with fixed contact, the other end is towards arc control device, the electric arc that produces when dynamic/static contact disconnects flows to arc control device by fixed contact along the striking sheet like this, yet, this still exists striking phenomenon not exclusively reliably, because dynamic/static contact closure or disconnection are in a flash, the electric arc that produces both may be delivered in moving contact, also may be delivered in fixed contact, in case be delivered on the moving contact, then can burn out coil or make tripping along moving contact, the Yin Gaowen of handle place and being out of shape, thereby influence operation.Now also have simultaneously at the fixed contact place and the striking sheet is set near the moving contact place, but the striking sheet movable contact head end pointed that present close moving contact place is provided with all is to adopt circular arc bending setting, this circular arc bending has but caused drawing the electric arc that meets the moving contact place well, be that the electric arc at moving contact place also can be passed to upper end (promptly close handle end) along moving contact, thereby burn out coil or make tripping, the Yin Gaowen of handle place and be out of shape.
Summary of the invention
It is better that the purpose of this utility model provides a kind of arc extinction performance, uses safer miniature circuit breaker.
The purpose of this utility model is achieved through the following technical solutions: a kind of miniature circuit breaker, include housing, dynamic and static contact, operating mechanism, electromagnetic trip mechanism, the arc control device and the first striking sheet and the second striking sheet, one end of the first striking sheet is electrically connected with fixed contact, and the other end stretches to arc control device, and an end of the second striking sheet is fixed on the yoke of electromagnetic trip mechanism, the other end points to moving contact, is characterized in: the end of the pointed and close moving contact of the described second striking sheet has wedge angle.
Usually, the end of described second striking sheet moving contact pointed is a rectangle, and rectangular two angles are wedge angle.
The utility model further is set to again: an end of the second striking sheet is weldingly fixed on the yoke of electromagnetic trip mechanism, and the other end points to the end of also close moving contact.
The utility model further is set to again: an end of the described second striking sheet be weldingly fixed on yoke near a side of arc control device, the other end bends downwards and points to and near the moving contact place.
The beneficial effects of the utility model are: because the second striking sheet is pointed and the end of close moving contact has wedge angle, and wedge angle has better striking performance than arc chord angle, therefore can guarantee that the electric arc at moving contact place is drawn and received in the arc control device by this second striking sheet.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment
Embodiment
Now in conjunction with the accompanying drawings the utility model is further described:
As shown in the figure, the embodiment of a kind of miniature circuit breaker of the utility model, include housing 1, moving, fixed contact 5,4, operating mechanism 2, electromagnetic mechanism 7, the arc control device 3 and the first striking sheet 8 and the second striking sheet 6, operating mechanism 2 is by handle 21, snap close 21,24 and formation such as connecting rod 22, one end of the first striking sheet 8 is electrically connected with fixed contact 4, the other end stretches to arc control device 3, one end 61 of the second striking sheet 6 is weldingly fixed on 71 sides near arc control device 3 of yoke of electromagnetic mechanism 7, the other end 62 of the described second striking sheet 6 bending downwards and point to moving contact 5 ends 51 (bending part also can arc transition), and the end 61 of the described second striking sheet, 6 moving contacts 5 pointed is rectangle, and rectangular two jiaos are wedge angle.Because this end 61 of the second striking sheet 6 has wedge angle, and wedge angle has better striking performance than arc chord angle, therefore can guarantee that the electric arc at moving contact 5 places is drawn and received in the arc control device by this second striking sheet 6.
The wedge angle of the end of the second above-mentioned striking sheet can certainly acutangulate shape and forms by gradually going on foot reducing, but makes trouble like this, adopts length direction then to be the end shape of common sheet material, therefore makes convenient.
In addition, other place of moving contact also can be pointed in the end of the second above-mentioned striking sheet, yet the end striking effect of pointing to moving contact can be better, because the end of moving contact also has wedge angle usually, thereby therefore the electric discharge phenomena of tapering off to a point more have utilization that electric arc is drawn by this place, end and connect the second electric arc sheet.
Certainly, from the principle, the second striking sheet also can be straight sheet, but adopts fold angle type, utilizes the second striking sheet to be weldingly fixed on the yoke securely.
Claims (5)
1. miniature circuit breaker, include housing, dynamic and static contact, operating mechanism, electromagnetic trip mechanism, the arc control device and the first striking sheet and the second striking sheet, one end of the first striking sheet is electrically connected with fixed contact, and the other end stretches to arc control device, and an end of the second striking sheet is fixed on the yoke of electromagnetic trip mechanism, the other end points to and near moving contact, it is characterized in that: the end of described second striking sheet moving contact pointed has wedge angle.
2. miniature circuit breaker as claimed in claim 1 is characterized in that: the end of described second striking sheet moving contact pointed is a rectangle.
3. miniature circuit breaker as claimed in claim 1 or 2 is characterized in that: an end of the second striking sheet is weldingly fixed on the yoke of electromagnetic mechanism, and the other end points to the end of moving contact.
4. miniature circuit breaker as claimed in claim 1 or 2 is characterized in that: an end of the described second striking sheet be weldingly fixed on yoke near a side of arc control device, the other end bends downwards and points to and near the moving contact place.
5. miniature circuit breaker as claimed in claim 3 is characterized in that: an end of the described second striking sheet be weldingly fixed on yoke near a side of arc control device, the other end bends downwards and points to and near the moving contact place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200831240U CN201174362Y (en) | 2008-01-29 | 2008-01-29 | Small circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200831240U CN201174362Y (en) | 2008-01-29 | 2008-01-29 | Small circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201174362Y true CN201174362Y (en) | 2008-12-31 |
Family
ID=40201487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200831240U Expired - Fee Related CN201174362Y (en) | 2008-01-29 | 2008-01-29 | Small circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201174362Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074427A (en) * | 2011-01-13 | 2011-05-25 | 武汉中直电气股份有限公司 | Fast circuit breaker with longer service life |
| CN102568966A (en) * | 2010-12-16 | 2012-07-11 | 上海明科电气有限公司 | Back-up surge protection breaker |
-
2008
- 2008-01-29 CN CNU2008200831240U patent/CN201174362Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568966A (en) * | 2010-12-16 | 2012-07-11 | 上海明科电气有限公司 | Back-up surge protection breaker |
| CN102568966B (en) * | 2010-12-16 | 2016-01-06 | 上海明科电气有限公司 | Back-up surge protection breaker |
| CN102074427A (en) * | 2011-01-13 | 2011-05-25 | 武汉中直电气股份有限公司 | Fast circuit breaker with longer service life |
| CN102074427B (en) * | 2011-01-13 | 2013-04-10 | 武汉中直电气股份有限公司 | Fast circuit breaker with longer service life |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Huatong Electromechanical Co., Ltd. Assignor: FATO Mechanical And Electrical Equipment Group Co., Ltd. Contract record no.: 2011330000375 Denomination of utility model: Small-sized breaker Granted publication date: 20081231 License type: Exclusive License Record date: 20110429 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081231 Termination date: 20170129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |