CN203260541U - Circuit breaker arc distinguishing chamber device - Google Patents
Circuit breaker arc distinguishing chamber device Download PDFInfo
- Publication number
- CN203260541U CN203260541U CN 201320292778 CN201320292778U CN203260541U CN 203260541 U CN203260541 U CN 203260541U CN 201320292778 CN201320292778 CN 201320292778 CN 201320292778 U CN201320292778 U CN 201320292778U CN 203260541 U CN203260541 U CN 203260541U
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- CN
- China
- Prior art keywords
- arc
- circuit breaker
- insulating cover
- control device
- chamber device
- 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.)
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Abstract
The utility model relates to a circuit breaker arc distinguishing chamber device and belongs to the technical field of low-voltage electrical equipment. The circuit breaker arc distinguishing chamber device includes an arc striking sheet, an arc isolating cover, an arc distinguishing chamber shell, a magnetic conduction sheet and an arc distinguishing chamber, wherein the arc isolating cover and the arc distinguishing chamber are both arranged inside the arc distinguishing chamber shell. One end of the arc striking sheet is connected with a fixed contact of a circuit breaker, and the other end of the arc striking sheet extends to the arc distinguishing chamber. The arc distinguishing chamber comprises a plurality of parallel and stacked arc distinguishing gate sheets. The arc isolating cover is provided with a pair of parallelly-arranged side plates and a connecting part connected with the pair of side plates. One side surface at one side of each side plate, which faces the arc striking sheet, is provided with an arc surface. The circuit breaker arc distinguishing chamber device is characterized in that bosses are formed on the arc surfaces of the arc isolating cover; and the bosses are matched with the arc striking sheet, such that the arc isolating cover can be prevented from being inwards deformed. With the circuit breaker arc distinguishing chamber device adopted, the reliability of the breaking capacity of the circuit breaker can be high; and the circuit breaker arc distinguishing chamber device is advantageous in simple structure, convenient installation and convenience in limiting of the arc isolating cover.
Description
Technical field
The utility model belongs to the low voltage equipment technical field, is specifically related to be used in a kind of device for switching the arc-extinguishing chamber device of circuit breaker of extinguish arcs, is the improvement to existing arc-extinguishing chamber device of circuit breaker structure.
Background technology
Moulded case circuit breaker generally comprises plastic casing, contact system, arc quenching system, operating mechanism and release.When short circuit current produces, the release of circuit breaker will instantaneous trip so that the operating mechanism action, moving contact and fixed contact separate under the effect of the drive of operating mechanism and electric repulsion.When moving contact separated with fixed contact, the voltage between moving contact and the fixed contact caused the air dielectric discharge and forms electric arc that electric arc direction to arc quenching system under the effect in magnetic field moves, and cools off at last, extinguishes in arc quenching system.For electric arc is introduced arc control device, usually adopt the magnetic blow-out method, namely current circuit is arranged so that the magnetic field of its generation and arc current interact, and enter arc control device to impel electric arc.
Existing arc control device device, comprise arc insulating cover, magnetic conduction sheet, arc control device housing and arc control device, described magnetic conduction sheet has two usually, be installed on respectively in the arc insulating cover, described arc insulating cover is installed in the arc control device housing, described arc control device generally comprise the arc extinguishing grid pieces of the parallel stacked installation of multi-disc, be used for cutting off and extinguish arcs, simultaneously, in order to improve arc quenching effect, also be provided with arc striking piece at the top of arc control device, by arc striking piece, arc extinguishing grid pieces and arc insulating cover and magnetic conduction sheet form arc quenching system, moving, fixed contact is positioned in the middle of two magnetic conduction sheets, and electric arc enters arc extinguishing grid pieces from magnetic conduction sheet through arc striking piece during disjunction, is finally extinguished.The problem that said structure exists is: because arc insulating cover is thin wall plastics, do not have spacingly during installation, because high temperature and electromagnetic force may make arc insulating cover be out of shape to the inside, cause gap smaller during disjunction, affect the moving contact action, the reduction of breaking capacity reliability.
In view of above-mentioned prior art, be necessary existing arc-extinguishing chamber device of circuit breaker structure is improved, technical scheme described below produces under such background.
Summary of the invention
Task of the present utility model is that a kind of arc-extinguishing chamber device of circuit breaker will be provided, the breaking capacity reliability that it can not only the Effective Raise circuit breaker, and also simple in structure, it is convenient to install, and can make things convenient for the spacing of arc-extinguish chamber.
Task of the present utility model is finished like this, a kind of arc-extinguishing chamber device of circuit breaker, comprise arc striking piece, arc insulating cover, arc control device housing and arc control device, described arc insulating cover and arc control device place in the arc control device housing, described arc striking piece one end is connected with the fixed contact of circuit breaker, the other end extends to arc control device, described arc control device comprise that multi-disc is parallel and are the arc extinguishing grid pieces that stacked on top of one another arranges, described arc insulating cover is provided with the pair of side plates of parallel to each other configuration and links the connecting portion of pair of side plates, lateral plates has cambered surface on a side side of arc striking piece, characteristics are: described arc insulating cover is formed with boss in cambered surface, and described boss cooperates with described arc striking piece and prevents that described arc insulating cover is out of shape to the inside.
In a specific embodiment of the present utility model, the side plate of described arc insulating cover has groove at the top of short transverse, has on the described arc control device housing for realizing the locating piece that arc insulating cover is spacing with described groove scarf.
In another specific embodiment of the present utility model, described arc-extinguishing chamber device of circuit breaker also comprises magnetic conduction sheet, has cavity on the both sides of the pair of side plates Width of described arc insulating cover, and described magnetic conduction sheet is contained in the described cavity.
In another specific embodiment of the present utility model, the width of described cavity and the thickness of described magnetic conduction sheet match, to realize both close installation.
Also have in the specific embodiment of the present utility model, described arc striking piece comprises a parallel-segment parallel with described arc extinguishing grid pieces and an ascent stage obliquely, the junction of parallel-segment and ascent stage forms arc leading angle, ascent stage is positioned at the front end of arc striking piece, is used for cooperating with described boss and preventing that described arc insulating cover is out of shape to the inside.
The utility model is owing to adopt said structure, the beneficial effect that has: the breaking capacity reliability of circuit breaker is high, and simple in structure, and it is convenient to install, and can make things convenient for the spacing of arc-extinguish chamber.
Description of drawings
Fig. 1 is an embodiment planar structure sketch of the present utility model.
Fig. 2 is the stereochemical structure exploded view of Fig. 1.
Fig. 3 is the stereochemical structure exploded view of arc insulating cover described in the utility model, magnetic conduction sheet.
Fig. 4 is the three-dimensional structure diagram of arc control device housing described in the utility model.
Fig. 5 is the vertical view of arc insulating cover described in the utility model.
Fig. 6 is the perspective view that fixed contact described in the utility model, arc striking piece, arc insulating cover and magnetic conduction sheet cooperate.
Fig. 7 is an example structure figure of arc insulating cover described in the utility model.
Among the figure: 1. arc insulating cover, 11. side plates, 111. grooves, 112. cavitys, 12. cambered surfaces, 121. boss, 13. connecting portions; 2. arc control device housing, 21. locating pieces; 3. magnetic conduction sheet; 4. fixed contact; 5. arc striking piece, 51. parallel-segment, 52. ascent stages, 53. arc leading angles; 6. arc control device, 61. arc extinguishing grid pieces.
Embodiment
In order to make the public can fully understand technical spirit of the present utility model and beneficial effect; the applicant will describe in detail embodiment of the present utility model below by reference to the accompanying drawings; but the applicant is not restriction to technical scheme to the description of embodiment, anyly makes form and immaterial variation all should be considered as protection range of the present utility model according to the utility model design.
See also Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, a kind of arc-extinguishing chamber device of circuit breaker of the utility model comprises arc striking piece 5, arc insulating cover 1, arc control device housing 2, magnetic conduction sheet 3 and arc control device 6.Described arc insulating cover 1 and arc control device 6 place in the arc control device housing 2, and described arc control device 6 comprise that multi-disc is parallel and are the arc extinguishing grid pieces 61 that stacked on top of one another arranges.Described arc striking piece 5 is a metallic plate, its top and end that is installed in arc control device 6 is connected with the fixed contact 4 of circuit breaker, the other end extends to arc control device 6, be used for pilot arc to arc control device 6, this arc striking piece 5 generally includes parallel-segment 51 and obliquely a ascent stage 52 parallel with described arc extinguishing grid pieces 61, parallel-segment 51 forms arc leading angle 53 with the junction of ascent stage 52, and the ascent stage 52 is positioned at the front end of arc striking piece 5.Described arc insulating cover 1 is working of plastics, and it comprises a pair of side plate 11 that is set in parallel and the connecting portion 13 that links pair of side plates 11 of facing each other, and the centre of pair of side plates 11 has be used to the gap that holds described fixed contact 4; Pair of side plates 11 respectively has groove 111 at the top of short transverse, and a pair of groove 111 matches with a pair of locating piece 21 on being located at arc control device housing 2 and realizes spacing to arc insulating cover 1; Pair of side plates 11 respectively has cambered surface 12 on a side side of arc striking piece 5, be formed with respectively boss 121 on a pair of cambered surface 12; Pair of side plates 11 respectively has cavity 112 in the both sides of Width, a pair of magnetic conduction sheet 3 is contained in the described cavity 112, the thickness of the width of cavity 112 and magnetic conduction sheet 3 matches, to realize both close installation, the close-fitting mode can prevent that magnetic conduction sheet 3 from coming off, under the magnetic fields that magnetic conduction sheet 3 forms, can accelerate electric arc to the motion of arc control device 6 places, and can prevent that electric arc from shifting to fixed contact 4 places again.
Please continue to consult Fig. 2 and in conjunction with Fig. 4, Fig. 7, when arc insulating cover 1 is encased in the arc control device housing 2, the pair of side plates 11 of arc insulating cover 1 is positioned at arc striking piece 5 both sides, until locating piece 21 is inserted in the groove 11, when arc insulating cover 1 stress deformation, locating piece 21 props up arc insulating cover 1 by groove 12, prevents arc insulating cover 1 distortion.
Please continue to consult Fig. 6, boss 121 on a pair of cambered surface 12 of described arc insulating cover 1 cooperated with the ascent stage 52 of arc striking piece 5, specifically: two boss 121 just extend to the both sides sidepiece of the ascent stage 52 of arc striking piece 5, when arc insulating cover 1 stress deformation, stop two boss 121 by arc striking piece 5, and then the pair of side plates 11 that prevents arc insulating cover 1 is out of shape to the inside, thereby guarantees that the gaps in the middle of the pair of side plates 11 can not diminish, and guaranteed the reliability of circuit breaker action.
Claims (5)
1.
A kind of arc-extinguishing chamber device of circuit breaker, comprise arc striking piece (5), arc insulating cover (1), arc control device housing (2) and arc control device (6), described arc insulating cover (1) and arc control device (6) place in the arc control device housing (2), described arc striking piece (5) one ends are connected with the fixed contact (4) of circuit breaker, the other end extends to arc control device (6), described arc control device (6) comprise that multi-disc is parallel and are the arc extinguishing grid pieces (61) that stacked on top of one another arranges, described arc insulating cover (1) is provided with the pair of side plates (11) of parallel to each other configuration and links the connecting portion (13) of pair of side plates (11), side plate (11) has cambered surface (12) on a side side of arc striking piece (5), it is characterized in that: described arc insulating cover (1) is formed with boss (121) in cambered surface (12), and described boss (121) cooperates with described arc striking piece (5) and prevents that described arc insulating cover (1) is out of shape to the inside.
2.
A kind of arc-extinguishing chamber device of circuit breaker according to claim 1, the side plate (11) that it is characterized in that described arc insulating cover (1) has groove (111) at the top of short transverse, have on the described arc control device housing (2) for realizing the spacing locating piece of arc insulating cover (21) with described groove (111) scarf.
3.
A kind of arc-extinguishing chamber device of circuit breaker according to claim 1, it is characterized in that this arc-extinguishing chamber device of circuit breaker also comprises magnetic conduction sheet (3), the pair of side plates (11) of described arc insulating cover (1) has cavity (112) in the both sides of Width, described magnetic conduction sheet (3) is contained in the described cavity (112).
4.
A kind of arc-extinguishing chamber device of circuit breaker according to claim 3 is characterized in that the width of described cavity (112) and the thickness of described magnetic conduction sheet (3) match, to realize both close installation.
5.
A kind of arc-extinguishing chamber device of circuit breaker according to claim 1, it is characterized in that described arc striking piece (5) comprises a parallel-segment (51) parallel with described arc extinguishing grid pieces (61) and an ascent stage (52) obliquely, parallel-segment (51) forms arc leading angle (53) with the junction of ascent stage (52), ascent stage (52) is positioned at the front end of arc striking piece (5), is used for cooperating with described boss (121) and preventing that described arc insulating cover (1) is out of shape to the inside
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320292778 CN203260541U (en) | 2013-05-27 | 2013-05-27 | Circuit breaker arc distinguishing chamber device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320292778 CN203260541U (en) | 2013-05-27 | 2013-05-27 | Circuit breaker arc distinguishing chamber device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203260541U true CN203260541U (en) | 2013-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320292778 Expired - Lifetime CN203260541U (en) | 2013-05-27 | 2013-05-27 | Circuit breaker arc distinguishing chamber device |
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| CN (1) | CN203260541U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157525A (en) * | 2014-08-12 | 2014-11-19 | 浙江民普电气有限公司 | Molded case earth leakage circuit breaker |
| CN105742136A (en) * | 2016-04-29 | 2016-07-06 | 浙江人民电器有限公司 | Miniature arc extinguishing structure of circuit breaker |
| CN109616345A (en) * | 2018-12-31 | 2019-04-12 | 雷顿电气科技有限公司 | The pedestal general assembly of electric switch |
| CN113823539A (en) * | 2021-10-28 | 2021-12-21 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Arc extinguishing system of circuit breaker |
-
2013
- 2013-05-27 CN CN 201320292778 patent/CN203260541U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157525A (en) * | 2014-08-12 | 2014-11-19 | 浙江民普电气有限公司 | Molded case earth leakage circuit breaker |
| CN105742136A (en) * | 2016-04-29 | 2016-07-06 | 浙江人民电器有限公司 | Miniature arc extinguishing structure of circuit breaker |
| CN109616345A (en) * | 2018-12-31 | 2019-04-12 | 雷顿电气科技有限公司 | The pedestal general assembly of electric switch |
| CN113823539A (en) * | 2021-10-28 | 2021-12-21 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Arc extinguishing system of circuit breaker |
| CN113823539B (en) * | 2021-10-28 | 2024-03-05 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Arc extinguishing system of circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |