CN203134624U - Insertion type miniature circuit breaker - Google Patents
Insertion type miniature circuit breaker Download PDFInfo
- Publication number
- CN203134624U CN203134624U CN 201320168719 CN201320168719U CN203134624U CN 203134624 U CN203134624 U CN 203134624U CN 201320168719 CN201320168719 CN 201320168719 CN 201320168719 U CN201320168719 U CN 201320168719U CN 203134624 U CN203134624 U CN 203134624U
- Authority
- CN
- China
- Prior art keywords
- arc
- circuit breaker
- separating wall
- miniature circuit
- type miniature
- 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 - Lifetime
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Abstract
The utility model relates to an insertion type miniature circuit breaker, wherein an arc extinguishing system comprises the following components: an arc extinguishing cover, starting weld tabs, mechanism guiding sheets and arc insulating walls. The starting weld tabs are equipped at the upper end and the lower end of an opening of the arc extinguishing cover. The arc insulating walls are equipped at two sides of the opening of the arc extinguishing cover. The mechanism guiding sheets closely cling on outside part of the arc insulating walls. The inner surface of each arc insulating wall, which faces the arc extinguishing cover, forms a compression oblique surface which thickens gradually. The two opposite arc insulating walls form a shrinking arc channel through the compression oblique surfaces. The shrinking arc channel squeezes the arc, so that the air pressure in the housing increases quickly thereby improving an air blowing arc-extinguishing effect.
Description
Technical field
The utility model relates to a kind of miniature circuit breaker, especially a kind of plug-in type miniature circuit breaker.
Background technology
Miniature circuit breaker generally adopts the arc-extinguish chamber arc extinguishing, arc-extinguish chamber is by the grid sheet electric arc to be divided into the several sections less electric arcs of voltage to extinguish respectively, owing to limited by switch height dimension and inner space, the quantity of arc-extinguish chamber grid sheet sheet does not allow to increase, do not have enough exhaust spaces in circuit breaker inside yet, directly caused disjunction to be worth less than raising thereby the arc extinguishing ability of breaker arc extinguishing cover is restricted.
And existing miniature circuit breaker mounting means generally adopts guide rail to install, and can not satisfy some special installation requirements, the country that more particularly adopts different installation codes.
Summary of the invention
The purpose of this utility model is to overcome the defective of prior art, provides a kind of breaking capacity strong, easy-to-install plug-in type miniature circuit breaker.
For achieving the above object, the utility model adopts a kind of plug-in type miniature circuit breaker, comprise shell and setting handle, connecting rod, operating mechanism, electromagnetic system, arc quenching system, binding post in the enclosure, it is characterized in that: described arc quenching system comprises arc-extinguish chamber, run-on tab, magnetic conduction sheet, arc separating wall, run-on tab is arranged on the two ends up and down of arc-extinguish chamber opening part, arc separating wall is arranged on the both sides of arc-extinguish chamber opening part, magnetic conduction sheet is close to the arc separating wall outside, and the medial surface of arc separating wall forms the compression ramp of thickening gradually towards the arc-extinguish chamber place.
Novel arc separating wall of the present utility model has adopted the material that gas generation property is good, anti-flammability is strong, and two arc separating walls have constituted can suppress the electric arc re-breakdown phenomenon, effectively improve the current limiting performance of miniature circuit breaker and the circuit breaker electric arc moving conduit in useful life.When the miniature circuit breaker interrupting short circuit, produce electric arc and elevated temperature heat air-flow between the dynamic and static contact, electric arc enters arc-extinguish chamber with the magnetization of the grid sheet in run-on tab and magnetic conduction sheet and the arc-extinguish chamber and by run-on tab and magnetic conduction sheet (magnetic field effect) introducing arc channel, because the arc channel of shrinking is conducive to the gas blast arc-quenching effect to the extruding of electric arc and the effect of new material thereby make the housing internal gas pressure increase sharply.
For reverse thermal current motion, flow to voltage contact area by arc-extinguish chamber, owing to run into the obstruction of shrinkage arc channel, the thermal current movement velocity constantly descends, so that reflected gas stream speed reaches than low value near voltage contact area the time.This will be conducive to the medium recovery strength of voltage contact area, reduce the electric arc re-breakdown phenomenon, and improve arc voltage and reduce electric arc simultaneously to the corrosion of contact, thereby improve current limiting performance and the useful life of miniature circuit breaker, and also simple in structure, cost is low.
Of the present utility modelly be set to described plug-in type miniature circuit breaker and also comprise socket and flexible fastening pillar, form two relative inserted sheets on the socket, socket is provided with for the jump ring that inserted sheet is clamped in opposite directions, socket one of them binding post relatively is inlaid on the shell bottom surface, inserted sheet is exposed at outside the shell, and the flexible fastening pillar is arranged on the shell bottom surface other end.Adopt the mounting structure of above-mentioned socket and flexible fastening pillar to make circuit breaker can satisfy external special installation code, and simple installation, stable, reliable.
The utility model further is set to described shell and comprises loam cake and base, offer two location holes on the arc separating wall, corresponding location hole forms locating shaft on loam cake and the base, and arc separating wall was fixed on loam cake and the base by location hole and cooperating of locating shaft, simple installation, stable.
Description of drawings
Fig. 1 is the schematic diagram after the utility model embodiment removes loam cake.
Fig. 2 is the schematic diagram of the arc quenching system of the utility model embodiment.
Fig. 3 is the vertical view of the arc quenching system of the utility model embodiment.
Fig. 4 is the schematic diagram of the arc separating wall of the utility model embodiment.
Fig. 5 is the schematic diagram of the socket of the utility model embodiment.
Embodiment
As shown in Figure 1, specific embodiment of the utility model is a kind of plug-in type miniature circuit breaker, comprise shell and setting handle 3 in the enclosure, connecting rod 4, operating mechanism 5, electromagnetic system 6, arc quenching system 1, binding post 7, socket 2 and flexible fastening pillar 8, operating mechanism 5 is connected by connecting rod 4 and handle 3, shell comprises loam cake and base 9, socket 2 relative one of them binding post 7 are inlaid on base 9 bottom surfaces, flexible fastening pillar 8 is arranged on the shell bottom surface other end, as shown in Figure 5, form two relative inserted sheets 21 on the socket 2, inserted sheet 21 is exposed at outside the shell, and socket 2 is provided with the jump ring 22 that clamps in opposite directions for inserted sheet 21.
As Fig. 2,3, shown in 4, arc quenching system 1 comprises arc-extinguish chamber 11, run-on tab 12, magnetic conduction sheet 13, arc separating wall 14, run-on tab 12 is arranged on the two ends up and down of arc-extinguish chamber 11 opening parts, arc separating wall 14 is arranged on the both sides of arc-extinguish chamber 11 opening parts, offer two location holes 15 on the arc separating wall 14, corresponding location hole 15 forms locating shaft 10 on loam cake and the base 9, arc separating wall 14 is by being fixed on location hole 15 and cooperating of locating shaft 10 on loam cake and the base 9, magnetic conduction sheet 13 is close to arc separating wall 14 outsides, the medial surface of arc separating wall 14 forms the compression ramp 16 of thickening gradually towards arc-extinguish chamber 11 places, between the arc separating wall 14 that is oppositely arranged because compression ramp 16 forms an arc channel 17 of shrinking gradually towards arc-extinguish chamber 11.Extruding by 17 pairs of electric arcs of arc channel of shrinking improves the gas blast arc-quenching effect thereby the housing internal gas pressure is increased sharply.
Claims (3)
1. plug-in type miniature circuit breaker, comprise shell and setting handle, connecting rod, operating mechanism, electromagnetic system, arc quenching system, binding post in the enclosure, it is characterized in that: described arc quenching system comprises arc-extinguish chamber, run-on tab, magnetic conduction sheet, arc separating wall, run-on tab is arranged on the two ends up and down of arc-extinguish chamber opening part, arc separating wall is arranged on the both sides of arc-extinguish chamber opening part, magnetic conduction sheet is close to the arc separating wall outside, and the medial surface of arc separating wall forms the compression ramp of thickening gradually towards the arc-extinguish chamber place.
2. plug-in type miniature circuit breaker according to claim 1, it is characterized in that: described plug-in type miniature circuit breaker also comprises socket and flexible fastening pillar, form two relative inserted sheets on the socket, socket is provided with for the jump ring that inserted sheet is clamped in opposite directions, socket one of them binding post relatively is inlaid on the shell bottom surface, inserted sheet is exposed at outside the shell, and the flexible fastening pillar is arranged on the shell bottom surface other end.
3. plug-in type miniature circuit breaker according to claim 1, it is characterized in that: described shell comprises loam cake and base, offer two location holes on the arc separating wall, corresponding location hole forms locating shaft on loam cake and the base, and arc separating wall was fixed on loam cake and the base by location hole and cooperating of locating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320168719 CN203134624U (en) | 2013-03-27 | 2013-03-27 | Insertion type miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320168719 CN203134624U (en) | 2013-03-27 | 2013-03-27 | Insertion type miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203134624U true CN203134624U (en) | 2013-08-14 |
Family
ID=48942575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320168719 Expired - Lifetime CN203134624U (en) | 2013-03-27 | 2013-03-27 | Insertion type miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203134624U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700548A (en) * | 2013-12-30 | 2014-04-02 | 温州奥来电器有限公司 | Inserted energy-storing high-breaking small breaker |
| CN107978496A (en) * | 2017-12-23 | 2018-05-01 | 雅絮智能科技有限公司 | A kind of miniature circuit breaker with plug-in type conductive clip |
-
2013
- 2013-03-27 CN CN 201320168719 patent/CN203134624U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700548A (en) * | 2013-12-30 | 2014-04-02 | 温州奥来电器有限公司 | Inserted energy-storing high-breaking small breaker |
| CN107978496A (en) * | 2017-12-23 | 2018-05-01 | 雅絮智能科技有限公司 | A kind of miniature circuit breaker with plug-in type conductive clip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhou Weifeng Inventor after: Lin Kai Inventor after: Hu Guangzhao Inventor after: Gao Haishi Inventor before: Zhou Weifeng Inventor before: Lin Kai Inventor before: Wu Guangzhao Inventor before: Gao Haishi |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHOU WEIFENG LIN KAI WU GUANGZHAO GAO HAISHI TO: ZHOU WEIFENG LIN KAI HU GUANGZHAO GAO HAISHI |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130814 |
|
| CX01 | Expiry of patent term |