CN201100912Y - Small breaker - Google Patents
Small breaker Download PDFInfo
- Publication number
- CN201100912Y CN201100912Y CNU2007200466420U CN200720046642U CN201100912Y CN 201100912 Y CN201100912 Y CN 201100912Y CN U2007200466420 U CNU2007200466420 U CN U2007200466420U CN 200720046642 U CN200720046642 U CN 200720046642U CN 201100912 Y CN201100912 Y CN 201100912Y
- Authority
- CN
- China
- Prior art keywords
- arc
- arc extinguishing
- extinguishing cover
- circuit breaker
- static contact
- 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 small-sized circuit breaker, which comprises an operating system, an arc extinguishing system, a tripping mechanism, an insulating shell and an operating grip, wherein the arc extinguishing system comprises an end tab, an arc extinguishing cover and a supporting stand with a static contact, wherein one end of the end tab is connected with a bimetal system conductor, the other end is connected into the arc extinguishing cover, one end of the supporting stand forms the static contact, the other end is connected into the arc extinguishing cover, and one end with the static contact of the supporting stand is prolonged and arranged in parallel with a movable contact. The circuit breaker of the utility model is compared with an existing technique, when a short circuit is broken, the static contact can utilize the parallel conductor current limiting principle to limit current to break the moveable contact rapidly on one hand and simultaneously can lead electric arcs into the air extinguishing cover rapidly to accelerate electric arc rapid extinguishing, the other route of striking arcs are led into the arc extinguishing cover through the end tab which is welded on the bimetal system conductor, the two routes of striking arcs method is utilized, the arc guiding ability is enlarged by one time, the electric arcs can rapidly enter into the arc extinguishing cover and extinguish, and the breaking capacity of products can be increased.
Description
Technical field
The utility model relates to a kind of circuit breaker, relates in particular to a kind of miniature circuit breaker.
Background technology
Existing miniature circuit breaker is by operating system, arc quenching system, tripping mechanism, insulation crust, compositions such as operating grip, wherein arc quenching system is by run-on tab, arc-extinguish chamber, the compositions such as support of band fixed contact, one end of run-on tab and support all is connected arc-extinguish chamber, both constitute the two-way arc-striking structure of circuit breaker, fixed contact on the support is shorter, one side of additional silver point is not parallel with moving contact, the another side of support, it is not parallel promptly stretching into beyond the arc-extinguish chamber with coil, the such structural design of support is not too reasonable, influenced the arc ability of leading of circuit breaker, the product breaking capacity is not good, needs to improve.
Summary of the invention
The purpose of this utility model is to provide a kind of breaking capacity better miniature circuit breaker at not enough defective of the prior art.
For achieving the above object, the utility model adopts a kind of miniature circuit breaker, comprise operating system, arc quenching system, tripping mechanism, insulation crust, operating grip, wherein arc quenching system comprises the support of run-on tab, arc-extinguish chamber, band fixed contact, run-on tab one end is connected with pair golden systems conductor, and the other end is connected into arc-extinguish chamber, and support one end forms fixed contact, the other end is connected into arc-extinguish chamber, and the first end of supporting band stationary contact prolongs and be arranged in parallel with moving contact.
The utility model further is set to an end and coil that support stretches into arc-extinguish chamber and be arranged in parallel.
The utility model is by providing a kind of miniature circuit breaker, the first end of employing supporting band stationary contact prolongs and be arranged in parallel with moving contact, and the end and the coil that further support are stretched into arc-extinguish chamber be arranged in parallel, compare with prior art, in short circuit breaking, fixed contact can utilize parallel conductor current limliting principle current limliting on the one hand, make the quick disjunction of moving contact, simultaneously electric arc can be with the introducing arc-extinguish chamber soon, can quicken electric arc extinguishes fast, another pass arc is introduced arc-extinguish chamber by the run-on tab that is welded on two golden systems conductor, utilize such two-way striking way, lead the expansion of arc ability and be twice, make electric arc enter arc-extinguish chamber fast and extinguish, the breaking capacity of product is improved.
Description of drawings
Fig. 1 is the utility model embodiment cut-away view.
Fig. 2 is the utility model embodiment rack assumption diagram.
Embodiment
As shown in Figure 1, specific embodiment of the utility model is a kind of miniature circuit breaker, comprise operating system, arc quenching system, tripping mechanism, insulation crust, operating grip, wherein arc quenching system comprises the support 3 of run-on tab 1, arc-extinguish chamber 2, band fixed contact 31, run-on tab 1 one ends are connected with pair golden systems conductor, the other end is connected into arc-extinguish chamber 2, additional silver point one end of support 3 band fixed contacts 31 1 ends prolong and with moving contact 4 keeping parallelism settings, support 3 stretches into an end and the coil 5 keeping parallelism settings of arc-extinguish chamber 2.
The utility model is compared with prior art, in short circuit breaking, fixed contact 31 can utilize parallel conductor current limliting principle current limliting on the one hand, makes moving contact 4 quick disjunctions, electric arc can be with soon simultaneously and be introduced arc-extinguish chamber 2, can quicken electric arc extinguishes fast, another pass arc is introduced arc-extinguish chamber 2 by the run-on tab 1 that is welded on two golden systems conductor, utilizes such two-way striking way, leads the expansion of arc ability and is twice, make electric arc enter arc-extinguish chamber 2 fast and extinguish, the breaking capacity of product is improved.
Claims (2)
1, a kind of miniature circuit breaker, comprise operating system, arc quenching system, tripping mechanism, insulation crust, operating grip, wherein arc quenching system comprises the support (3) of run-on tab (1), arc-extinguish chamber (2), band fixed contact (31), run-on tab (1) one end is connected with pair golden systems conductor, the other end is connected into arc-extinguish chamber (2), support (3) one ends form fixed contact (31), the other end is connected into arc-extinguish chamber (2), it is characterized in that: support (3) band fixed contact (31) one ends prolong and be arranged in parallel with moving contact (4).
2, miniature circuit breaker according to claim 1 is characterized in that: an end and coil (5) that described support (3) stretches into arc-extinguish chamber (2) be arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200466420U CN201100912Y (en) | 2007-09-14 | 2007-09-14 | Small breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200466420U CN201100912Y (en) | 2007-09-14 | 2007-09-14 | Small breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201100912Y true CN201100912Y (en) | 2008-08-13 |
Family
ID=39937444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200466420U Expired - Fee Related CN201100912Y (en) | 2007-09-14 | 2007-09-14 | Small breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201100912Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545132A (en) * | 2013-09-30 | 2014-01-29 | 浙江天正电气股份有限公司 | Miniature circuit breaker |
-
2007
- 2007-09-14 CN CNU2007200466420U patent/CN201100912Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545132A (en) * | 2013-09-30 | 2014-01-29 | 浙江天正电气股份有限公司 | Miniature circuit breaker |
| CN103545132B (en) * | 2013-09-30 | 2016-03-02 | 浙江天正电气股份有限公司 | 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: 20080813 Termination date: 20160914 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |