CN101866789A - Circuit-breaker - Google Patents
Circuit-breaker Download PDFInfo
- Publication number
- CN101866789A CN101866789A CN 201010161590 CN201010161590A CN101866789A CN 101866789 A CN101866789 A CN 101866789A CN 201010161590 CN201010161590 CN 201010161590 CN 201010161590 A CN201010161590 A CN 201010161590A CN 101866789 A CN101866789 A CN 101866789A
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- CN
- China
- Prior art keywords
- circuit
- breaker
- cap
- wall portion
- shelter wall
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Abstract
The invention provides the arcing gas exhaust structure of improved circuit-breaker, compare, reduce component count, assembling man-hour and reduce cost, and can guarantee high fail safe with structure in the past.This circuit-breaker is in the body shell of the moulding resin system that is made of housing (2) and cap (3), be equipped with current interruption portion, open-close mechanism section, over current trip, mains side end at above-mentioned cap (3), one-body molded have a shelter wall portion (3b), this shelter wall portion (3b) opening has the gas exhaust port (3c) that is communicated with arc-control device (10), and overlappingly have in this shelter wall portion (3b), have flexible protective sheet (15), and the end card of this protective sheet (15) only remains on the cap (3) from outer side covers gas exhaust port (3c).
Description
Technical field
The present invention relates to the circuit-breaker as object such as Inturruptor for sub-line, residual current circuit breaker, in detail, relate to the gas exhaust structure that makes the body shell that the arcing gas following overcurrent to open circuit and produce at arc control device releases to outside.
Background technology
As everyone knows, the foregoing circuit circuit breaker is to carry following parts to constitute in the body shell of the segmenting structure that the combination resinous housing of molding and cap form: circuit breaker portion, and it is made of main circuit contact mechanism, arc-control device, movable contact and fixed contact; Open-close mechanism section; And over current trip.And, when the overload electric current that detects in main circuit circulation, thereby during the action of above-mentioned over current trip, the tripping operation action takes place in open-close mechanism section, make the main circuit contact open circuit, the electric arc that will produce between fixed contact and travelling contact is driven into arc-control device, the current limliting cutout.
Below, represent the structure (the central electrode part of three-pole circuit circuit breaker) of foregoing circuit circuit breaker with Fig. 5.In the drawings, symbol 1 is by housing 2, cap 3 and is attached to the body shell of the moulding resin system that the top cover 4 on the cap 3 constitutes, the 5th, power supply side terminal, the 6th, the load side terminal, the 7th, the fixed contact integrally formed with the power supply side terminal that constitutes by rod-shaped conductor 5, the 8th, helicoid movable contact, the 9th, the movable contact frame, the 10th, along the grid chip arc-control device of the mobile route configuration of opening circuit of movable contact 8, the 11st, with the open-close mechanism section that constitutes by elbow-bar mechanism of movable contact 8 interlock, the 12nd, operating grip, the 13rd, over current trip.The inside of housing 2, cap 3 is separated by the interpolar next door, forms to take in the current interruption portion of each utmost point and the chamber of arc-control device individually.
In addition, relative with above-mentioned arc-control device 10, end face in the power supply terminal side of cap 3, opening and each extremely indivedual corresponding gas exhaust port 3a make the arcing gas that produces in arc control device when overcurrent opens circuit release to outside from the arc control device of arc-control device 10 by above-mentioned gas exhaust outlet 3a.
The diagram circuit-breaker is represented horizontal posture that operating grip 12 is made progress, and in this circuit-breaker being arranged on dish such as control panel the time, use so that above-mentioned power supply side terminal 5 is installed in circuit-breaker towards the orthostatism of upside the support rails that coils side etc.
But under the state in the circuit-breaker with said structure is arranged on dish, above-mentioned gas exhaust outlet 3a is towards the top opening, and like this, the foreign matter that falls from the top, dust may be invaded the arc control device of enclosure interior by gas exhaust port 3a.Therefore, in existing circuit-breaker, following structure is arranged as can be known (for example, with reference to patent documentation 1), promptly, shown in Fig. 6 (a) and (b), face exhaust outlet 3a at the mains side end face opening of cap 3, backboard made of insulating material 14 and bottom with flexible protective sheet 15 be inserted in the seam shape groove that is formed on housing 2 inboards and block to end and keep, wherein, above-mentioned backboard 14 disperses perforation that steam vent 14a and relative with arc-control device 10 is arranged on the plate face, and above-mentioned protective sheet 15 is overlapping according to mode and backboard 14 from the above-mentioned steam vent 14a of outer side covers.
In said structure, protective sheet 15 is as a kind of diaphragm type unidirectional valve performance function, and under normal conditions, protective sheet 15 covers the steam vent 14a of perforation on the backboard 14, prevents in dust, the foreign matter intrusion body shell 1.And on the other hand, when overcurrent opens circuit, being subjected to the blast of the arcing gas that produces at arc control device, the steam vent 14a of backboard 14 is opened in protective sheet 15 deflection laterally, and arcing gas is discharged to outside.This protective sheet 15 can with anti-combustion, heat-resisting, to have flexible thickness be insulation sheet material (for example, Nomex (Nomex nylon) (NOMEX) paper: the ProductName of paper feed Co., Ltd. of the Supreme Being people of Du Pont elder generation) make below the 0.5mm.
But, possess in the existing circuit-breaker of above-mentioned arcing gas exhaust structure in body shell, owing to use the backboard 14 of other parts to cover the peristome of the cap 3 that is communicated with arc-control device 10, component count, assembling increase man-hour, cause cost to rise.In addition, backboard 14 and protective sheet 15 are assembled in housing 2 sides of body shell 1 and block only maintenance, therefore, in the assembling stage that cap 3 is installed to housing 2, need confirm, adjust the operation of the chimeric position of backboard 14 and cap 3.
In addition, if follow large current interruption such as short circuit current, it is big that the pressure of the arcing gas that produces in arc control device becomes, and following fault then may take place, that is, insert the backboard 14 that the slot of housing 2 keeps and come off from groove, is blown to hull outside with arcing gas.
Patent documentation 1: Japanese kokai publication hei 8-321244 communique
Summary of the invention
The present invention finishes in view of above-mentioned existing in prior technology problem, and its purpose is, solves above-mentioned problem, a kind of arcing gas exhaust structure of improved circuit-breaker is provided, compare with existing structure, reduce component count, assembling man-hour and reduce cost, and can guarantee fail safe.
In order to achieve the above object, circuit-breaker of the present invention is equipped with current interruption portion, open-close mechanism section, over current trip in the body shell of the moulding resin system that is made of housing and cap,
Mains side end at the cap of body shell, one-body molded have a shelter wall portion, this shelter wall portion opening has the gas exhaust port that is communicated with above-mentioned arc-control device, and overlappingly have in this shelter wall portion, have flexible protective sheet, and the end card of this protective sheet only remains on the cap of body shell (first aspect of invention) from outer side covers above-mentioned gas exhaust outlet.Specifically constitute in the following manner:
(1) the shelter wall portion of above-mentioned cap prolongs (second aspect of invention) according to the mode that its front enters the enclosure interior of body shell.
(2) in the left and right sides of above-mentioned protective sheet, be formed with the supporting slice of the arm shape that stretches out to the side from its bottom, this supporting slice is embedded into the cap that is arranged on body shell the interpolar next door slot and block and end to keep (third aspect of invention).
(3) at the upper limb of the shelter wall portion of the cap that is formed at body shell, form the engaging protrusion (fourth aspect of invention) that button is hung the upper end of fixing above-mentioned protective sheet.
According to the present invention, has following effect.
According to said structure, opening has the cap of the shelter wall portion of gas exhaust port and body shell one-body molded, the existing structure that is assembled in body shell on the plate face with the backboard of the other parts of the steam vent of will boring a hole is compared, thereby can reduce the component count of body shell, the reduction that assembling realizes product cost man-hour.And, with coming off that the integrated shelter wall of cap portion does not worry that blast because of arcing gas is difficult to expect, can guarantee high security.
In addition, invade protective sheet in the body shell and shelter wall portion from the exhaust outlet of shelter wall portion and block overlappingly and only remain on the cap by preventing dust, foreign matter, can be installed to the assembling stage before the housing at cap, protective sheet is assembled in assigned position body shell.Like this, compare, can improve assembling operation with the existing structure that the protective sheet card is only remained on case side.
Description of drawings
Fig. 1 (a) is the structural section figure of mains side end that possesses the circuit-breaker of arcing gas exhaust structure of the present invention, (b) is the enlarged drawing of the B portion of Fig. 1 (a).
Fig. 2 is a front view of seeing the arcing gas exhaust structure from the arrow P direction of Fig. 1, wherein, (a) is the figure that the state of protective sheet has been installed in expression, (b) is the figure that the state of protective sheet has been unloaded in expression.
Fig. 3 is the key diagram of order of the installation exercise of protective sheet shown in Figure 2.
Fig. 4 is illustrated in the exploded perspective view that the cap corresponding to the body shell of the structure of Fig. 1 is combined the circuit-breaker integral body under the preceding state with housing.
Fig. 5 becomes the structural section figure of the distribution of objective for implementation of the present invention with circuit-breaker.
Fig. 6 is the figure of the expression arcing gas exhaust structure that existing circuit-breaker possessed, and wherein, (a) is the side cross-sectional, view of the mains side end of circuit-breaker, (b) is the stereogram of the mounting structure of the backboard of expression in (a), protective sheet.
Symbol description:
1: body shell
2: housing
2b: embeded slot
3: cap
3a: shelter wall portion
3c: gas exhaust port
3e: slot
3f: engaging protrusion
5: power supply side terminal
7: fixed contact
8: movable contact
10: arc-control device
11: open-close mechanism section
13: over current trip
15: protective sheet
15a: supporting slice
Embodiment
Below with reference to Fig. 1 to explanation embodiments of the present invention embodiment illustrated in fig. 4.Wherein, Fig. 1 (a) is the structural section figure of circuit-breaker of the arcing gas exhaust structure that possessed of mains side end of expression body shell, Fig. 1 (b) is the enlarged drawing of the B portion of Fig. 1 (a), Fig. 2 is a front view of seeing shelter wall portion from the arrow P direction of Fig. 1, wherein, (a) be the figure that the state of protective sheet has been installed in expression, (b) be the figure that the state of protective sheet has been unloaded in expression, Fig. 3 is the key diagram of the erection sequence of protective sheet, Fig. 4 is illustrated in the exploded perspective view that the cap of body shell is combined the circuit-breaker integral body under the preceding state with housing, to Fig. 5, corresponding components is marked with same-sign among Fig. 6, and omission is described.
Promptly, in the illustrated embodiment, in the mains side end of cap 3, with the cap 3 integrally moulded moulding shelter wall 3b of portion, to discharge side relative with the gas that carries the arc-control device 10 in body shell for it, and the gas exhaust port 3c that is communicated with arc-control device 10 in the wall upper shed of the 3b of this shelter wall portion.In addition, according to having a flexible protective sheet 15, and these protective sheet 15 cards are only remained on cap 3 at the 3b of shelter wall portion from the mode of outer side covers above-mentioned gas exhaust outlet 3c is overlapping.This protective sheet as mentioned above, by anti-combustion, heat-resisting, to have flexible thickness be insulation sheet material (for example, Nomex (Nomex nylon) (NOMEX) paper: the ProductName of paper feed Co., Ltd. of the Supreme Being people of Du Pont elder generation) make below the 0.5mm.
At this, the 3b of shelter wall portion enters the housing 2 of body shell according to its leading section (illustrated lower end side) the mode of inboard prolongs, and makes the lateral margin of front of this shelter wall portion embed the embeded slot 2b of the inwall side that is arranged on housing 2, remains on assembling position.
On the other hand, protective sheet 15 is formed with the arm shape supporting slice 15a (with reference to Fig. 2 (a), Fig. 3) that stretches out along the left and right sides from its bottom, the front end of this supporting slice 15a is inserted the slot 3e (with reference to Fig. 2 (b)) of the interpolar next door 3d that is located at cap 3 from the below, button is hung and is remained on assigned position.In addition, in the illustrated embodiment, at the outstanding engaging protrusion 3f (with reference to Fig. 1, Fig. 2) that forms of the upper limb central part of the 3b of shelter wall portion, the inboard that makes the upper end of protective sheet 15 insert this engaging protrusion 3f realizes that button hangs fixing.In addition, in the assembling procedure of circuit-breaker, this protective sheet 15 can be overlapping at the stage and the 3b of shelter wall portion that cap 3 are assembled into before the housing 2, hangs by the said sequence button to remain on the cap 3.
Pass through said structure, under the common user mode in the mains side end that makes body shell up is placed in circuit-breaker dish, inaccessible opening prevents in dust, the foreign matter intrusion housing at the gas exhaust port 3c of shelter wall portion the protective sheet 15 overlapping with the 3b of shelter wall portion of cap 3 from the outside.
On the other hand, when the overcurrent that detects in the circuit circulation, thereby the tripping operation action takes place in circuit-breaker during current interruption, protective sheet 15 is subjected to the gas pressure at the arcing gas of the arc control device generation of arc-control device 10, deflection deformation laterally, by and the 3b of shelter wall portion between the gap and the gas exhaust port 3c that produce, arcing gas is released to the outside.In this case, because 3b of shelter wall portion and cap 3 integrally moulded formation, even so follow large current interruptions such as short circuit current and be applied in high arcing gas pressure, do not worry as the backboard 14 (with reference to Fig. 6) of existing structure, being difficult to expect yet come off and flyer to outside, can guarantee high security.If the generation and the discharging of arcing gas stops after current interruption, then protective sheet 15 oneselfs are returned to previous status, overlap the 3b of shelter wall portion once more, inaccessible gas exhaust port 3c.
Above with reference to description of drawings embodiments of the invention, but the present invention is not limited to the foregoing description.Can do all changes in the technology of the present invention thought range, they all belong to protection scope of the present invention.
Claims (4)
1. a circuit-breaker in the body shell of the moulding resin system that is made of housing and cap, is equipped with current interruption portion, open-close mechanism section, over current trip, and this circuit-breaker is characterised in that:
Mains side end at the cap of body shell, one-body molded have a shelter wall portion, this shelter wall portion opening has the gas exhaust port that is communicated with described arc-control device, and overlappingly have in this shelter wall portion, have flexible protective sheet, and the end card of this protective sheet only remains on the cap of body shell from the described gas exhaust port of outer side covers.
2. circuit-breaker as claimed in claim 1 is characterized in that:
Shelter wall portion is prolonged according to the mode that its front enters the housing inboard of body shell.
3. circuit-breaker as claimed in claim 1 is characterized in that:
In the left and right sides of protective sheet, be formed with the supporting slice of the arm shape that stretches out to the side from its bottom, the slot and blocking that this supporting slice is embedded into the interpolar next door of the cap that is arranged on body shell end to keep.
4. circuit-breaker as claimed in claim 1 is characterized in that:
Upper limb in shelter wall portion is formed with the engaging protrusion that button is hung the upper end of fixed protection sheet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-097624 | 2009-04-14 | ||
| JP2009097624A JP2010251035A (en) | 2009-04-14 | 2009-04-14 | Circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101866789A true CN101866789A (en) | 2010-10-20 |
| CN101866789B CN101866789B (en) | 2013-02-27 |
Family
ID=42958456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010161590 Active CN101866789B (en) | 2009-04-14 | 2010-04-14 | Circuit breaker |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2010251035A (en) |
| KR (1) | KR101051517B1 (en) |
| CN (1) | CN101866789B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800540A (en) * | 2011-05-26 | 2012-11-28 | 富士电机机器制御株式会社 | Circuit breaker |
| CN102956408A (en) * | 2011-08-18 | 2013-03-06 | Ls产电株式会社 | Enclosure of single pole breaking unit for mold cased circuit breaker |
| CN104871282A (en) * | 2012-12-12 | 2015-08-26 | 三菱电机株式会社 | Circuit breaker |
| CN109119305A (en) * | 2018-09-17 | 2019-01-01 | 浙江天正电气股份有限公司 | A kind of air-sweeping type arc-chutes and air-blowing structure for residual current circuit breaker |
| CN111312559A (en) * | 2018-12-11 | 2020-06-19 | Ls产电株式会社 | Circuit breaker for wiring |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101255475B1 (en) * | 2011-11-10 | 2013-04-16 | 엘에스산전 주식회사 | Molded case circuit breaker |
| KR200482131Y1 (en) * | 2012-10-09 | 2016-12-20 | 엘에스산전 주식회사 | Upper cover for mold cased circuit breaker |
| MX2014004189A (en) | 2013-04-08 | 2014-11-03 | Abl Ip Holding Llc | Relay assembly with exhaust cover. |
| KR101981597B1 (en) * | 2015-03-31 | 2019-05-23 | 현대일렉트릭앤에너지시스템(주) | Cover of mccb with radiant heat structure |
| CN112820593B (en) * | 2021-02-07 | 2023-09-15 | 浙江世隆电气科技有限公司 | Wiring device of circuit breaker |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3246588B2 (en) * | 1995-05-23 | 2002-01-15 | 富士電機株式会社 | Arc gas discharge device of circuit breaker |
| CN1388544A (en) * | 2001-05-28 | 2003-01-01 | 富士电机株式会社 | Dustproof structure of circuit breaker |
| JP2009043517A (en) * | 2007-08-08 | 2009-02-26 | Nitto Electric Works Ltd | Circuit breaker |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0641294Y2 (en) * | 1988-04-25 | 1994-10-26 | 松下電工株式会社 | Arc gas exhaust device such as circuit breaker |
| KR920007028Y1 (en) * | 1988-11-12 | 1992-09-28 | 아오이 죠이찌 | Circuit breaker |
| US5589672A (en) * | 1994-06-14 | 1996-12-31 | Fuji Electric Co., Ltd. | Circuit breaker with arc quenching device and vent |
| JP3399301B2 (en) | 1997-07-09 | 2003-04-21 | 三菱電機株式会社 | Circuit breaker |
-
2009
- 2009-04-14 JP JP2009097624A patent/JP2010251035A/en not_active Withdrawn
-
2010
- 2010-02-22 KR KR1020100015582A patent/KR101051517B1/en active IP Right Grant
- 2010-04-14 CN CN 201010161590 patent/CN101866789B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3246588B2 (en) * | 1995-05-23 | 2002-01-15 | 富士電機株式会社 | Arc gas discharge device of circuit breaker |
| CN1388544A (en) * | 2001-05-28 | 2003-01-01 | 富士电机株式会社 | Dustproof structure of circuit breaker |
| JP2009043517A (en) * | 2007-08-08 | 2009-02-26 | Nitto Electric Works Ltd | Circuit breaker |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800540A (en) * | 2011-05-26 | 2012-11-28 | 富士电机机器制御株式会社 | Circuit breaker |
| CN102956408A (en) * | 2011-08-18 | 2013-03-06 | Ls产电株式会社 | Enclosure of single pole breaking unit for mold cased circuit breaker |
| CN102956408B (en) * | 2011-08-18 | 2015-04-29 | Ls产电株式会社 | Enclosure of single pole breaking unit for mold cased circuit breaker |
| CN104871282A (en) * | 2012-12-12 | 2015-08-26 | 三菱电机株式会社 | Circuit breaker |
| CN104871282B (en) * | 2012-12-12 | 2017-06-09 | 三菱电机株式会社 | Circuit-breaker |
| CN109119305A (en) * | 2018-09-17 | 2019-01-01 | 浙江天正电气股份有限公司 | A kind of air-sweeping type arc-chutes and air-blowing structure for residual current circuit breaker |
| CN111312559A (en) * | 2018-12-11 | 2020-06-19 | Ls产电株式会社 | Circuit breaker for wiring |
| CN111312559B (en) * | 2018-12-11 | 2022-07-05 | Ls产电株式会社 | Circuit breaker for wiring |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20100113977A (en) | 2010-10-22 |
| KR101051517B1 (en) | 2011-07-22 |
| JP2010251035A (en) | 2010-11-04 |
| CN101866789B (en) | 2013-02-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: Saitama Prefecture, Japan Patentee after: FUJI ELECTRIC FA COMPONENTS & SYSTEMS Co.,Ltd. Address before: Tokyo, Japan Patentee before: FUJI ELECTRIC FA COMPONENTS & SYSTEMS Co.,Ltd. |