CN201663132U - Small-sized circuit breaker - Google Patents
Small-sized circuit breaker Download PDFInfo
- Publication number
- CN201663132U CN201663132U CN2010201608914U CN201020160891U CN201663132U CN 201663132 U CN201663132 U CN 201663132U CN 2010201608914 U CN2010201608914 U CN 2010201608914U CN 201020160891 U CN201020160891 U CN 201020160891U CN 201663132 U CN201663132 U CN 201663132U
- Authority
- CN
- China
- Prior art keywords
- moving contact
- contact
- circuit breaker
- movable contact
- automatic flash
- 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
An embodiment of the utility model discloses a small-sized circuit breaker, which comprises an arc striking sheet, a static contact, a movable contact, a flexible connector, a support, a coil, an automatic flash barrier and an arc extinguish chamber, wherein the arc striking sheet is connected with the static contact. One end of the bottom of the automatic flash barrier is fixed below a travel range of the movable contact when the circuit breaker is switched on and off, the preset distance H1 is arranged between one end of the bottom of the automatic flash barrier and the travel range of the movable contact, the other end of the bottom of the automatic flash barrier extends to a position above the contact surface between the movable contact and the static contact and close to the movable contact, and the preset distance H2 is arranged between the other end of the bottom of the automatic flash barrier and the movable contact. When the movable contact and the static contact of the small-sized circuit breaker are separated, electric arcs are separated simultaneously, thereby greatly reducing arcing time, leading the generated electric arcs into the arc extinguish chamber rapidly by the arc striking sheet, effectively protecting the movable contact, preventing the movable contact from being burnt, increasing breaking capacity of the automatic flash barrier and prolonging service life of the automatic flash barrier.
Description
Technical field
The utility model relates to a kind of circuit breaker, more particularly, relates to a kind of miniature circuit breaker.
Background technology
Existing miniature circuit breaker by the striking sheet that is connected with fixed contact with link to each other with moving contact pair golden, be flexible coupling, the support of coil and fixed coil forms.This circuit breaker is because the distance of the support portions at moving contact place and moving contact is far away, electric arc on the moving contact at first will be gone into coil and support from the moving contact upper punch that is flexible coupling, another part pours support portions and introduces arc control device, make the electric arc on the moving contact be difficult to be introduced in the arc control device like this, increase the arcing time of electric arc and moving contact has been had burn, thereby reduced the breaking capacity of miniature circuit breaker.
The utility model content
In view of this, the utility model provides a kind of miniature circuit breaker, has reduced the arcing time to a great extent, and protection also reduces the burn moving contact, has improved breaking capacity and electric life access times.
For achieving the above object, the utility model provides following technical scheme:
A kind of miniature circuit breaker, comprise the striking sheet, fixed contact, the moving contact that are connected with fixed contact, be flexible coupling, support, coil, arc sheet and arc control device automatically, described moving contact stroke range below when one end of described automatic arc sheet bottom is fixed on described circuit breaker break-make, and and described moving contact stroke range between a predeterminable range H1 is arranged;
The other end of described automatic arc sheet bottom extends to described moving contact and close moving contact place, described fixed contact contact-making surface top, and and described moving contact between a predeterminable range H2 is arranged.
Above-mentioned circuit breaker, preferred, described support is near described moving contact position lengthening, and the described moving contact of distance has a predeterminable range H3.
Can draw by above technical scheme; the miniature circuit breaker that the utility model provides; moving contact and fixed contact are when disconnecting; electric arc is spaced simultaneously; greatly reduce the arcing time, make the electric arc that produces introduced in the arc control device by the striking sheet rapidly, effectively protected moving contact; prevented that moving contact from being burnt, thereby improved the breaking capacity and the electric life access times of automatic arc sheet.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the disclosed miniature circuit breaker structure chart of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The disclosed miniature circuit breaker structure chart of the utility model embodiment as shown in Figure 1, comprise the striking sheet, moving contact 1, the fixed contact 2 that are connected with fixed contact, be flexible coupling, support, coil, arc sheet 7 and arc control device automatically, moving contact 1 stroke range below when an end of arc sheet 7 bottoms is fixed on the circuit breaker break-make automatically, and and a predeterminable range H1 is arranged between the moving contact stroke range, predeterminable range H1 is about 1 millimeter;
Automatically the other end of arc sheet 7 bottoms extends to moving contact 1 and fixed contact 2 contact-making surfaces top near moving contact 1 place, and and moving contact between a predeterminable range H2 is arranged, defaultly be about 1 millimeter based on H2.
Support has a predeterminable range H3 near moving contact 1 position lengthening apart from moving contact 1, and predeterminable range H3 is about 1 millimeter.
When breaker closing, the arc face of automatic arc sheet 7 of the present utility model (being extended to the part at 1 millimeter position of moving contact 1 contact-making surface by fixing point), the lateral dynamics that moves by moving contact 1 (borrowing pressure contact 4 to provide by moving contact) move to about 0.5 millimeter place, below that moving contact 1 contacts with fixed contact 1 freely to be stopped.
When circuit breaker disconnects; arc face with automatic arc sheet 7 of the present utility model forms the another sides of about 95 degree angles and gets back to original position rapidly by the resilience force that moving contact 1 disconnects; wrap the contact-making surface position and bigger fixed contact 2 metal coverings of moving contact 1; thereby reach and when disconnecting, cut off the electric arc that is burning; make remaining fraction electric arc on the moving contact 1 directly introduce arc control device along the support of lengthening; another part electric arc is introduced arc control device by fixed contact 2 along the striking sheet; thereby reduce the arcing time greatly; make and produce electric arc rapidly by in the striking sheet introducing arc control device; and protection moving contact minimizing burn moving contact, thereby improve breaking capacity and electric life access times.
Automatically arc sheet 7 rotates by automatic arc rotating shaft 3; Moving contact 1 rotates by moving contact rotating shaft 8.
When circuit breaker was off-state, moving contact 1 was in the state that is stopped electric arc burn by automatic arc sheet 7 parcels;
When moving contact 1 rotation 26 degree, arc sheet 7 can be by the power (borrowing pressure contact 6 to provide) of moving contact 1 rotation automatically, and equidirectional rotation 70 degree are to reach the breaker closing that moving contact 1 contacts with fixed contact 2;
When circuit breaker disconnected circuit protection, moving contact 1 can rotate identical angle in the opposite direction with automatic arc sheet 7, gets back to original position, thereby finishes the protection to moving contact 1.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (2)
1. miniature circuit breaker, comprise the striking sheet, fixed contact, the moving contact that are connected with fixed contact, be flexible coupling, support, coil, arc sheet and arc control device automatically, it is characterized in that, described moving contact stroke range below when one end of described automatic arc sheet bottom is fixed on described circuit breaker break-make, and and described moving contact stroke range between a predeterminable range H1 is arranged;
The other end of described automatic arc sheet bottom extends to described moving contact and close moving contact place, described fixed contact contact-making surface top, and and described moving contact between a predeterminable range H2 is arranged.
2. circuit breaker according to claim 1 is characterized in that, described support is near described moving contact position lengthening, and the described moving contact of distance has a predeterminable range H3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201608914U CN201663132U (en) | 2010-04-08 | 2010-04-08 | Small-sized circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201608914U CN201663132U (en) | 2010-04-08 | 2010-04-08 | Small-sized circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201663132U true CN201663132U (en) | 2010-12-01 |
Family
ID=43233553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201608914U Expired - Fee Related CN201663132U (en) | 2010-04-08 | 2010-04-08 | Small-sized circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201663132U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664113A (en) * | 2012-05-16 | 2012-09-12 | 安文胜 | Electric appliance switch taking flame-retardant insulating partition as breaking medium |
| CN102832062A (en) * | 2012-08-28 | 2012-12-19 | 北京人民电器厂有限公司 | Electrical appliance device with arc separating member |
| CN103681145A (en) * | 2012-08-30 | 2014-03-26 | 西门子公司 | Arc extinguishing device and circuit breaker adopting same |
| CN106356240A (en) * | 2016-11-02 | 2017-01-25 | 乐清市也为电气有限公司 | Moving and static contact terminal apparatus of disconnecting switch |
-
2010
- 2010-04-08 CN CN2010201608914U patent/CN201663132U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664113A (en) * | 2012-05-16 | 2012-09-12 | 安文胜 | Electric appliance switch taking flame-retardant insulating partition as breaking medium |
| CN102832062A (en) * | 2012-08-28 | 2012-12-19 | 北京人民电器厂有限公司 | Electrical appliance device with arc separating member |
| CN102832062B (en) * | 2012-08-28 | 2015-02-04 | 北京人民电器厂有限公司 | Electrical appliance device with arc separating member |
| CN103681145A (en) * | 2012-08-30 | 2014-03-26 | 西门子公司 | Arc extinguishing device and circuit breaker adopting same |
| CN103681145B (en) * | 2012-08-30 | 2016-06-22 | 西门子公司 | Arc-control device and adopt the chopper of this arc-control device |
| CN106356240A (en) * | 2016-11-02 | 2017-01-25 | 乐清市也为电气有限公司 | Moving and static contact terminal apparatus of disconnecting switch |
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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: 20101201 Termination date: 20150408 |
|
| EXPY | Termination of patent right or utility model |