JP6292994B2 - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
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- JP6292994B2 JP6292994B2 JP2014126811A JP2014126811A JP6292994B2 JP 6292994 B2 JP6292994 B2 JP 6292994B2 JP 2014126811 A JP2014126811 A JP 2014126811A JP 2014126811 A JP2014126811 A JP 2014126811A JP 6292994 B2 JP6292994 B2 JP 6292994B2
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- Prior art keywords
- barrier
- circuit breaker
- arc
- side wall
- cover
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- 230000004888 barrier function Effects 0.000 claims description 57
- 239000000463 material Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000005340 laminated glass Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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- Breakers (AREA)
Description
本発明は、例えば４極直列配線を行う直流回路用の回路遮断器に適した消弧装置を備えた回路遮断器に関する。 The present invention relates to a circuit breaker including an arc extinguishing device suitable for a circuit breaker for a DC circuit that performs, for example, four-pole series wiring.
従来の回路遮断器は、固定バリア部の可動バリア部に近い方の両端部を、排気バリアの外側に折り曲げて、排気バリアの外側に位置するベースおよびカバーの排気口側表面を覆うように形成した固定バリア部両端折曲部を備え、かつ固定バリア部両端部を排気バリアと共に両端溝に挿入し保持される（例えば、特許文献１参照）。 The conventional circuit breaker is formed so that both ends of the fixed barrier section closer to the movable barrier section are bent outside the exhaust barrier to cover the base located outside the exhaust barrier and the exhaust side surface of the cover The fixed barrier portion is bent at both ends, and both ends of the fixed barrier portion are inserted and held in the grooves at both ends together with the exhaust barrier (see, for example, Patent Document 1).
従来の回路遮断器では、例えば太陽光発電向けの直流回路用の高電圧回路遮断器に適用した場合、隣接して設けられた極間に高電圧が印加されると、各極に対応して設けられた消弧装置間において、筐体を構成するベースとカバーの接合面、および取付ねじを介して内部短絡が発生し、遮断不能となる問題があった。 In a conventional circuit breaker, for example, when applied to a high voltage circuit breaker for a DC circuit for photovoltaic power generation, when a high voltage is applied between adjacent electrodes, each circuit breaker Between the provided arc-extinguishing devices, there is a problem that an internal short circuit occurs through the joint surface of the base and the cover constituting the housing and the mounting screw, and the circuit cannot be shut off.
本発明は上記のような問題点を改善するためになされたもので、隣接して設けられた極の消弧装置間における本体取付部を介した内部短絡を防ぐことが可能な回路遮断器を提供することを目的としている。 The present invention was made in order to improve the above-described problems, and a circuit breaker capable of preventing an internal short circuit through a main body mounting portion between adjacent arc extinguishing devices provided. It is intended to provide.
本発明に係る回路遮断器は、可動接触子から見て消弧装置の背部の端部に排気バリアが設けられ、排気バリアには、消弧装置の背部に位置するバリア本体と、バリア本体と一体に形成され消弧装置の背部を覆う第１のバリア側壁体とが設けられ、この第１のバリア側壁体は、本体取付孔を覆うものである。
The circuit breaker according to the present invention is provided with an exhaust barrier at the end of the back part of the arc extinguishing device as viewed from the movable contact, and the exhaust barrier includes a barrier main body located at the back of the arc extinguishing device, A first barrier side wall body that is integrally formed and covers the back portion of the arc extinguishing device is provided, and the first barrier side wall body covers the main body attachment hole .
本発明の回路遮断器によれば、排気バリアの側壁体により絶縁性が向上するため、隣接する極間の内部短絡を防止することができる。 According to the circuit breaker of the present invention, the insulation performance is improved by the side wall of the exhaust barrier, so that an internal short circuit between adjacent poles can be prevented.
以下、本発明の実施の形態について、図面を参照して説明する。なお、各図中、同一符号は、同一または相当部分を示すものとする。 Embodiments of the present invention will be described below with reference to the drawings. In addition, in each figure, the same code | symbol shall show the same or an equivalent part.
実施の形態１．
図１〜図１４は、本発明に係る回路遮断器の実施の形態１を説明するための図である。図２〜図１４は本実施の形態１における消弧装置部分の構成を示す図である。
Embodiment 1 FIG.
FIGS. 1-14 is a figure for demonstrating Embodiment 1 of the circuit breaker based on this invention. 2-14 is a figure which shows the structure of the arc-extinguishing apparatus part in this Embodiment 1. FIG.
図１において、回路遮断器１００は、４極型の回路遮断器であって、遮断器の筐体の一部を構成するベース１内に、遮断器の構成部品である開閉機構部２、過電流引き外し装置３、消弧装置４、排気バリア５等が収納される。 In FIG. 1, a circuit breaker 100 is a four-pole type circuit breaker, and a base 1 that constitutes a part of the circuit breaker housing has an opening / closing mechanism 2 that is a component of the circuit breaker, The current tripping device 3, the arc extinguishing device 4, the exhaust barrier 5 and the like are accommodated.
ベース１の一端には可動接触子に電気的に接続された負荷側端子６ａ〜６ｄが設けられ、またベース１の他端には固定接触子に電気的に接続された電源側端子７ａ〜７ｄが設けられている。 One end of the base 1 is provided with load side terminals 6a to 6d electrically connected to the movable contact, and the other end of the base 1 is provided with power supply side terminals 7a to 7d electrically connected to the fixed contact. Is provided.
また、ベース１の上部は、筐体の一部を構成するカバー９ａとカバー９ｂによって覆われている。カバー９ａは３極分の消弧装置部分を覆い、カバー９ｂは１極分（特定極用）の消弧装置を覆うように構成されている。 The upper part of the base 1 is covered with a cover 9a and a cover 9b that constitute a part of the housing. The cover 9a covers the arc extinguishing device portion for three poles, and the cover 9b is configured to cover the arc extinguishing device for one pole (for a specific pole).
開閉機構部２は、固定接触子（図示せず、以下同様）と対向配置された可動接触子（図示せず、以下同様）を開極動作させるものであり、過電流引き外し装置３の動作によって可動接触子を開放する。可動接触子は、操作ハンドル８によって手動でも開閉することができる。 The opening / closing mechanism unit 2 opens a movable contact (not shown, the same applies below) opposed to a fixed contact (not shown, the same applies hereinafter), and operates the overcurrent tripping device 3. To release the movable contact. The movable contact can also be opened and closed manually by the operation handle 8.
ベース１には、図２、図３に示すように、４極分の消弧装置４がベースに組み込まれている。 As shown in FIGS. 2 and 3, the arc extinguishing device 4 for four poles is incorporated in the base 1.
また、ベース１には、本体取付孔１０、カバー取付ねじ部１１が設けられており、カバー９ａに形成された孔８１、カバー９ｂに形成された孔８２を利用して、ベース１に、カバー９ａ、カバー９ｂが取り付けられる。 Further, the base 1 is provided with a main body attachment hole 10 and a cover attachment screw portion 11, and the base 1 is covered with the cover 81 using the hole 81 formed in the cover 9a and the hole 82 formed in the cover 9b. 9a and cover 9b are attached.
消弧装置４は、固定接触子と可動接触子の開閉空間（領域）を囲むように配置され、過電流引き外し装置３の動作によって可動接触子が固定接触子から離れる際に発生するアークを分断して消弧するものである。 The arc extinguishing device 4 is arranged so as to surround the open / close space (region) of the fixed contact and the movable contact, and generates an arc generated when the movable contact is separated from the fixed contact by the operation of the overcurrent tripping device 3. It is divided and extinguished.
消弧装置４の後部（背部）、すなわち、電源側端子７ａ〜７ｄ側は、排気バリア５によって覆われ、伸長されたアークが消弧装置４の外部に漏れないように構成されている。排気バリア５は、図４〜図８に示すように、可動接触子に対し消弧装置４の反対側端部に設けられたバリア本体５ａ、本体取付孔１０を覆う第１のバリア側壁体５ｂ、本体取付孔１０に加えカバー取付ねじ部１１を覆う第２のバリア側壁体５ｃで構成され、バリア本体５ａには孔５ｄが形成されている。
また、第１のバリア側壁体５ｂおよび第２のバリア側壁体５ｃは、バリア本体５ａからそれぞれ逆方向に延びるように設けられている。
そして、第１のバリア側壁体５ｂと第２のバリア側壁体５ｃは、本体取付孔１０の近傍の消弧装置４に望むベース１とカバー９ａ、カバー９ｂの接合面も覆うので、絶縁性を向上させることができる。
The rear part (back part) of the arc extinguishing device 4, that is, the power source side terminals 7 a to 7 d side is covered with the exhaust barrier 5, and the extended arc is configured not to leak outside the arc extinguishing device 4. As shown in FIGS. 4 to 8, the exhaust barrier 5 includes a barrier main body 5 a provided at the opposite end of the arc extinguishing device 4 with respect to the movable contact, and a first barrier side wall 5 b that covers the main body attachment hole 10. The second barrier side wall 5c covers the cover mounting screw portion 11 in addition to the main body mounting hole 10, and the barrier body 5a has a hole 5d.
The first barrier side wall body 5b and the second barrier side wall body 5c are provided so as to extend in opposite directions from the barrier main body 5a.
And since the 1st barrier side wall body 5b and the 2nd barrier side wall body 5c also cover the joint surface of the base 1 and the cover 9a and the cover 9b which are desired for the arc-extinguishing apparatus 4 in the vicinity of the main body mounting hole 10, the insulating property Can be improved.
消弧装置４は、図９〜図１３に示すように、Ｕ字状に形成された板からなる複数枚のグリッド４３と、このグリッド４３を両側面から保持する第１のグリッドサポート４１、第２のグリッドサポート４２によって構成されている。グリッド４３は、それぞれ同じ形状、大きさである。 As shown in FIGS. 9 to 13, the arc extinguishing device 4 includes a plurality of grids 43 made of U-shaped plates, a first grid support 41 that holds the grids 43 from both sides, 2 grid supports 42. The grids 43 have the same shape and size.
排気バリア５は、消弧装置４の後部を覆うように配置され、第１のバリア側壁体５ｂ、第２のバリア側壁体５ｃによって本体取付孔１０、カバー取付ねじ部１１を覆うことができる。 The exhaust barrier 5 is disposed so as to cover the rear portion of the arc extinguishing device 4, and the main body attachment hole 10 and the cover attachment screw portion 11 can be covered by the first barrier side wall body 5b and the second barrier side wall body 5c.
排気バリア５の背部には、図１４に示す異物混入防止バリア１２が組み込まれており、外部からの異物侵入を防止している。 A foreign matter mixing prevention barrier 12 shown in FIG. 14 is incorporated in the back of the exhaust barrier 5 to prevent foreign matter from entering from the outside.
このように構成された実施の形態１の回路遮断器においては、排気バリア５の第１のバリア側壁体５ｂ、および第２のバリア側壁体５ｃにより絶縁性が向上するため、隣接極間の内部短絡を防止できる。 In the circuit breaker according to the first embodiment configured as described above, since the insulation is improved by the first barrier side wall body 5b and the second barrier side wall body 5c of the exhaust barrier 5, the inside of the space between adjacent poles is improved. Short circuit can be prevented.
また、ベース１、カバー９ａ、９ｂにリブの追加が難しい小型の回路遮断器にも適用である。排気バリア５の材料に高温でガスが発生しにくいものを使用することで、ホットガスの逆流を防止するため、遮断性能を維持できる。 The present invention is also applicable to a small circuit breaker in which it is difficult to add ribs to the base 1 and covers 9a and 9b. By using a material that does not easily generate gas at a high temperature as the material of the exhaust barrier 5, the reverse flow of the hot gas is prevented, so that the blocking performance can be maintained.
また、排気バリア５にモールドを使用することで、従来のガラス積層板で発生していた粉塵による接点間の導通不良を低減することが可能である。 In addition, by using a mold for the exhaust barrier 5, it is possible to reduce poor conduction between the contacts due to dust generated in the conventional glass laminate.
本発明は、その発明の範囲内において、実施の形態を適宜、変形、省略することができる。 In the present invention, the embodiments can be appropriately modified and omitted within the scope of the invention.
４ 消弧装置、４１ 第１のグリッドサポート、４２ 第２のグリッドサポート、４３ グリッド、５ 排気バリア、５ａ バリア本体、５ｂ 第１のバリア側壁体、５ｃ 第２のバリア側壁体。 4 arc extinguishing device, 41 first grid support, 42 second grid support, 43 grid, 5 exhaust barrier, 5a barrier body, 5b first barrier side wall body, 5c second barrier side wall body.
Claims (3)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014126811A JP6292994B2 (en) | 2014-06-20 | 2014-06-20 | Circuit breaker |
| CN201520066174.8U CN204424192U (en) | 2014-06-20 | 2015-01-29 | Circuit breaker |
| CN201510048267.2A CN105280449B (en) | 2014-06-20 | 2015-01-29 | Breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014126811A JP6292994B2 (en) | 2014-06-20 | 2014-06-20 | Circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2016006721A JP2016006721A (en) | 2016-01-14 |
| JP6292994B2 true JP6292994B2 (en) | 2018-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2014126811A Active JP6292994B2 (en) | 2014-06-20 | 2014-06-20 | Circuit breaker |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6292994B2 (en) |
| CN (2) | CN204424192U (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6292994B2 (en) * | 2014-06-20 | 2018-03-14 | 三菱電機株式会社 | Circuit breaker |
| CN105244242B (en) * | 2015-11-02 | 2017-09-15 | 上海电科电器科技有限公司 | breaker and its exhaust structure |
| JP6680228B2 (en) * | 2017-01-23 | 2020-04-15 | 三菱電機株式会社 | DC circuit breaker |
| JP2018181503A (en) * | 2017-04-07 | 2018-11-15 | 三菱電機株式会社 | Circuit breaker |
| CN107658190A (en) * | 2017-10-30 | 2018-02-02 | 北京明日电器设备有限责任公司 | A kind of breaker with double breaks and plastic case of modular construction |
| KR20200116759A (en) * | 2019-04-02 | 2020-10-13 | 엘에스일렉트릭(주) | Arc extinction apparatus for air circuit breaker |
| CN117810045B (en) * | 2024-03-01 | 2024-04-30 | 霍立克电气有限公司 | Arc extinguishing structure of circuit breaker |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57163932A (en) * | 1981-03-31 | 1982-10-08 | Matsushita Electric Works Ltd | Arc extinguishing device |
| JP3843208B2 (en) * | 2000-10-31 | 2006-11-08 | 寺崎電気産業株式会社 | Multipole circuit breaker |
| JP4492210B2 (en) * | 2004-05-19 | 2010-06-30 | 富士電機機器制御株式会社 | Circuit breaker and terminal cover |
| JP4466237B2 (en) * | 2004-07-01 | 2010-05-26 | 富士電機機器制御株式会社 | Circuit breaker |
| DE102007058216A1 (en) * | 2007-11-30 | 2009-06-04 | Siemens Ag | Flash-over device for an electric switch for resetting an electric arc has electric-arc resetting metal plates partly coated on one side with a gas-emitting material |
| CN203013658U (en) * | 2012-11-30 | 2013-06-19 | 环宇集团有限公司 | Arc extinguishing chamber of circuit breaker |
| JP6292994B2 (en) * | 2014-06-20 | 2018-03-14 | 三菱電機株式会社 | Circuit breaker |
-
2014
- 2014-06-20 JP JP2014126811A patent/JP6292994B2/en active Active
-
2015
- 2015-01-29 CN CN201520066174.8U patent/CN204424192U/en active Active
- 2015-01-29 CN CN201510048267.2A patent/CN105280449B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016006721A (en) | 2016-01-14 |
| CN105280449B (en) | 2018-04-17 |
| CN204424192U (en) | 2015-06-24 |
| CN105280449A (en) | 2016-01-27 |
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