JP4149183B2

JP4149183B2 - Circuit breaker

Info

Publication number: JP4149183B2
Application number: JP2002073862A
Authority: JP
Inventors: 隆馬場; 誠今川
Original assignee: Tempearl Industrial Co Ltd
Current assignee: Tempearl Industrial Co Ltd
Priority date: 2002-03-18
Filing date: 2002-03-18
Publication date: 2008-09-10
Anticipated expiration: 2022-03-18
Also published as: JP2003272503A

Description

【０００１】
【発明の属する技術分野】
本件の発明は薄型化を図った多極回路遮断器に係り、外形サイズが同一で漏電保護機能の追加等多機能化が可能な多極回路遮断器に関する。
【０００２】
【従来の技術】
従来の多極回路遮断器においては，該回路遮断器が配線用遮断器の場合，両側に位置する電源側及び負荷側の端子収納部位と，該端子収納部位間に設けられ，接点装置，接点を開閉する開閉機構部，過大電流で前記開閉機構部に作用して接点装置を開極させる過電流引き外し装置を内包する本体収納部位を配して構成されていた。また，漏電遮断器の場合には，両側に位置する電源側及び負荷側の端子収納部位と，該端子収納部位間に設けられ，接点装置，接点を開閉する開閉機構部，過大電流で前記開閉機構部に作用して接点装置を開極させる過電流引き外し装置，不平衡電流を検出して前記開閉機構に作用して接点装置を開極させる漏電引き外し装置を内包する本体収納部位を配して構成されていた。
【０００３】
【発明が解決しようとする課題】
しかしながら，回路遮断器としての機能を維持しつつ従来の多極回路遮断器の厚み方向の幅を薄型化し，なおかつ本体収納部位内部に多機能化を行う場合，例えば漏電遮断などの機能を追加して内蔵させる場合においては，追加する部品のスペースを遮断器内に設けることができず困難であった。
【０００４】
そこで本件の発明の目的とするところは、多極回路遮断器において，回路遮断器としての機能を維持しつつ厚み方向の幅を薄型化し，配線保護用の回路遮断器と漏電保護用の回路遮断器において外形サイズの同一性を損なうことなく，漏電遮断機能の追加など多機能化するための内部スペースを確保することができる多極回路遮断器を提供することを目的としている。
【０００５】
【課題を解決するための手段】
上述の目的を達成するため、請求項１は，両側に端子収納部位と，該両側の端子収納部位間に本体収納部位を有するケースと，
両側の端子間に位置する接点装置と，接点装置を開閉する機構部と，過大電流で前記開閉機構部に作用して接点装置を開極させる少なくともひとつの過電流引き外し装置とを含む多極回路遮断器において，
前記の少なくともひとつの過電流引き外し装置をケースの片側の端子収納部位に配し，接点装置と開閉機構部を本体収納部位に配していることを特徴とする多極回路遮断器を提供したものである。
【０００６】
また請求項２では，両側に端子収納部位と，該両側の端子収納部位間に本体収納部位を有するケースと，
両側の端子間に位置する接点装置と，接点装置を開閉する機構部と，過大電流で前記開閉機構部に作用して接点装置を開極させる少なくともひとつの過電流引き外し装置と，不平衡電流を検出して前記開閉機構に作用して接点装置を開極させる漏電引き外し装置を含む多極回路遮断器において，前記の少なくともひとつの過電流引き外し装置をケースの片側の端子収納部位に配し，接点装置と開閉機構部と不平衡電流を検出して前記開閉機構に作用して接点装置を開極させる漏電引き外し装置を本体収納部位に配した多極回路遮断器を提供したものである。
【０００７】
また請求項３では，両側に端子収納部位と，該両側の端子収納部位間に本体収納部位を有するケースと，
両側の端子間に位置する接点装置と，接点装置を開閉する機構部と，過大電流で前記開閉機構部に作用して接点装置を開極させる少なくともひとつの過電流引き外し装置とを含む２極回路遮断器において，
片側の端子収納部位には，取り付け底面に対し垂直な方向に高さをずらせて両極の端子が配されており，前記少なくともひとつの過電流引き外し装置は，該片側の端子収納部位内において両極の端子とケースの側壁間に配した２極回路遮断器を提供したものである。
【０００８】
また請求項４では，両側に端子収納部位と，該両側の端子収納部位間に本体収納部位を有するケースと，
両側の端子間に位置する接点装置と，接点装置を開閉する機構部と，過大電流で前記開閉機構部に作用して接点装置を開極させる少なくともひとつの過電流引き外し装置と，不平衡電流を検出して前記開閉機構に作用して接点装置を開極させる漏電引き外し装置を含む２極回路遮断器において，片側の端子収納部位には，取り付け底面に対し垂直な方向に高さをずらせて両極の端子が配されており，前記少なくともひとつの過電流引き外し装置は，該片側の端子収納部位内において両極の端子とケースの側壁間に配した２極回路遮断器を提供したものである。
【０００９】
【発明の実施の形態】
以下，本発明の実施の形態について，図面を用いて詳細に説明する。
【００１０】
第一の実施例として，回路遮断器が２極の配線用遮断器である場合を示す。図１は本件発明の配線用遮断器がＯＦＦの時の内部構造を示している。該回路遮断器には２つの過電流引き外し装置を設けてある。
【００１１】
図２に示すように，遮断器の外部はケース１ａとケース１ｂ及び、絶縁壁３から構成されている。図１において，２は操作ハンドル，５は回動部材，６，７は可動接触子，８は開閉機構部，９，１０は固定接触子，１２，１３は可動接点，１４，１５は固定接点，２３ａ，２３ｂは過電流引き外し装置，２４ａ，ｂは負荷側端子，２５ａ，２５ｂは電源側端子，２８は固定電磁片，２９は可動電磁片，３０は母線を示している。
【００１２】
１００，１０１は接点装置である。接点装置１００，１０１は可動接点１２と固定接点１４，および可動接点１３と固定接点１５がそれぞれ組をなして構成されている。また，ケース１には固定接触子９，１０が配設されており，各々の端部には固定接点１４，１５が設けられている。
【００１３】
機構部８は接点装置１００，１０１を開閉するものである。機構部はリンク２６と操作ハンドル２および回動部材５から構成されており，操作ハンドル２の操作により前記可動接点１２，１３が固定接点１４，１５に対し開閉するよう作用する。
【００１４】
回動部材５にはそれぞれ可動接触子６，７が装着保持されている。
【００１５】
過電流引き外し装置２３ａは導体３００により一端が可動接触子７と接続され，電路の一部を形成している。過電流引き外し装置２３ａは引き外し素子であるバイメタル３０１や電磁素子３０２で構成されている。過電流が発生した場合には開閉機構部８に作用して前記可動接点１２，１３を固定接点１４，１５から開極させるように働く。過電流引き外し装置２３ｂは導体３０３により一端が固定接触子９と接続され，電路の一部を形成している。過電流引き外し装置２３ｂも２３ａと同様にバイメタル３０４や電磁素子３０５で構成されている。
【００１６】
本体部は，これら操作ハンドル２と，開閉機構部８と，接点装置１００，１０１と，一方の引き外し装置２３ａを内装して構成されている。
【００１７】
電源側端子２５ａ，２５ｂは母線（図示しない導体）と接続されるものであり，プラグイン端子が用いられている。電源側端子部には，これら電源側端子２５ａ，２５ｂと過電流引き外し装置２３ｂが配設されている。過電流引き外し装置２３ｂは導体により一端が固定接触子９と接続されており，電路の一部を形成している。引き外し装置２３ｂは引き外し素子であるバイメタル３０４や電磁素子３０５で構成されており，先の引き外し装置２３ａと同様に，異常電流が発生した場合には開閉機構部８に作用して前記可動接点１２，１３を固定接点１４，１５から開極させるように働く。
【００１８】
負荷側端子２４ａ，ｂは負荷側の電線を接続する端子であり，速結端子を用いて構成されている。なお，負荷側端子収納部は負荷側端子２４ａ，ｂを内装する。
【００１９】
このように２極回路遮断器を電源側端子部と負荷側端子部を結ぶ方向において，電源側端子収納部，本体収納部，負荷側端子収納部と，大きく３つに分けた場合に，電源側端子収納部に電源側端子２５ａ，２５ｂおよび，過電流引き外し装置２３ｂの両方を配設して配線用回路遮断器を構成している。
【００２０】
図３は，片側の端子収納部位である電源側端子部から負荷側端子部の方向を見た場合の概略構造図である。電源側端子２５ａ，２５ｂは，回路遮断器の取り付け底面に対して，垂直な方向，即ち取り付け底面からハンドル面の方向に，高さをずらせて両極の電源端子部を配しており，一方の極の電源側端子部２５ａは回路遮断器取り付け底面側に位置しており，一側壁３１０側に位置している。
【００２１】
また，他方の極の電源側端子部２５ｂは先の電源側端子部２５ａに対してハンドル面側に位置しており，先の２５ａとは反対側の側壁３１１側に位置している。つまり，一対の電源側端子は電源側端子部の両側壁の中心からそれぞれ反対側の側壁に偏寄して配されている。
【００２２】
過電流引き外し装置２３ｂの引き外し素子はこれら電源側端子２５ａ，２５ｂと当接しないように，それぞれの端子が偏寄した側と反対側の側壁と各電源端子の間を縫うように屈曲した打ち抜き形状で構成され配置されている。
【００２３】
また，電源側端子２５ａ，２５ｂを，回路遮断器の取り付け底面に対して垂直な方向，即ちハンドル面の方向に高さをずらせて，なおかつ両極の電源端子部を同一の側壁側に近づけて配設し，二つの電源側端子と残りの側壁間に過電流引き外し装置の引き外し素子を配する位置関係としてもよい。
【００２４】
また，過電流引き外し装置２３ｂには固定電磁片２８，可動電磁片２９から成る電磁素子を含んで構成してもよい。この場合，過電流引き外し装置２３ｂは電源側端子と接続され電路の一部を形成し，過電流引き外し素子に電流が流れることにより，電路に発生する磁場の磁路となるよう略包囲状に形成された固定電磁片２８と，過電流が発生した際には固定電磁片２８に吸着し開閉機構部８に作用するよう弾性部材により一方向に付勢され回動自在に保持された可動電磁片２９とを備える。固定電磁片２８と可動電磁片２９とは，電源側端子２５ａ，２５ｂと当接せぬように，電源側端子部の略中央部に配設される。以上の構成により，過電流引き外し装置を電源側端子収納部に配設することを可能としている。過電流引き外し装置２３ａ，２３ｂの両方を本体部に配設する場合と比較して，端子収納部に配設した過電流引き外し装置の占めるスペース分，本体部に空きスペースが生じ，そのスペースに追加機能や補助機能を追加することが可能となる。
【００２５】
次に本件発明の回路遮断器が２極の漏電遮断器である場合を示す。図４は本件発明の漏電遮断器がＯＦＦ状態の内部構造を示している。該回路遮断器には２つの過電流引き外し装置を設けてある。
【００２６】
図４に示すように，遮断器の外部はケース２０１０ａとケース２０１０ｂ（図示しない）及び、絶縁壁２０３から構成されている。図４において，２０２は操作ハンドル，２０５は回動部材，２０６，２０７は可動接触子，２０８は開閉機構部，２０９，２１０は固定接触子，２１２，２１３は可動接点，２１４，２１５は固定接点，２２３ａ，２２３ｂは過電流引き外し装置，２２４ａ，２２４ｂは負荷側端子，２２５ａ，２２５ｂは電源側端子，２２８は固定電磁片，２２９は可動電磁片，２３１は引き外しコイル（以後トリップコイルという），２３２は零相変流器（以後ＣＴという）を示している。
本実施例で示す漏電遮断器は，先に示した第一の実施例における２極回路遮断器の内部に発生した空きスペースに新たにトリップコイル２３１，ＣＴ２３２，漏電検知器（図示しない）からなる漏電引き外し装置を配設して２極漏電回路遮断器を構成したものである。
【００２７】
２００，２０１は接点装置である。接点装置２００，２０１は可動接点２１２と固定接点２１４，および可動接点２１３と固定接点２１５がそれぞれ組をなして構成されている。また，ケース２０１には固定接触子２０９，２１０が配設されており，各々の端部には固定接点２１４，２１５が設けられている。
【００２８】
機構部２０８は接点装置２００，２０１を開閉するものである。機構部はリンク２２６と操作ハンドル２０２および回動部材２０５から構成されており，操作ハンドル２０２の操作により前記可動接点２１２，２１３が固定接点２１４，２１５に対して開閉するよう作用する。
【００２９】
回動部材２０５にはそれぞれ可動接触子２０６，２０７が装着保持されている。
【００３０】
過電流引き外し装置２２３ａは導体により一端が可動接触子２０７と接続され，電路の一部を形成している。過電流引き外し装置２２３ａは引き外し素子であるバイメタル２３０１や電磁素子２３０２で構成されている。過電流が発生した場合には開閉機構部２０８に作用して前記可動接点２１２，２１３を固定接点２１４，２１５から開極させるように働く。過電流引き外し装置２２３ｂは導体により一端が固定接触子２０９と接続され，電路の一部を形成している。過電流引き外し装置２２３ｂも引き外し素子であるバイメタル２３０４や電磁素子２３０５で構成されている。
【００３１】
本体部は，これら操作ハンドル２０２と，開閉機構部２０８と，接点装置２００，２０１と，一方の引き外し装置２２３ａ，ならびにＣＴ２３２，引き外しコイル２３１，漏電検知器を収納している。
【００３２】
電源側端子２２５ａ，２２５ｂは母線２３０と接続されるものであり，プラグイン端子が用いられている。電源側端子部には，これら電源側端子２２５ａ，２２５ｂと過電流引き外し装置２２３ｂが配設されている。過電流引き外し装置２２３ｂは導体により一端が固定接触子２０９と接続されており，電路の一部を形成している。引き外し装置２２３ｂは引き外し素子であるバイメタル２３０４や電磁素子３０５で構成されており，先の引き外し装置２２３ａと同様に，異常電流が発生した場合には開閉機構部２０８に作用して前記可動接点２１２，２１３を固定接点２１４，２１５から開極させるように働く。
【００３３】
負荷側端子２２４ａ，２２４ｂは負荷側の電線を接続する端子であり，速結端子を用いて構成されている。負荷側端子部は負荷側端子２２４ａ，２２４ｂにより構成されている。ＣＴ２３２には各極の負荷側端子２２４と固定接触子２１０，もしくは可動接触子２０６とを接続する接続導体を貫通させる貫通穴が設けられ，導体を流れる電流量に応じて電圧を出力する。
漏電検知器は該ＣＴ２３２からの出力を増幅する増幅部を有しており，演算処理を行い，引き外しコイル２３１に信号を出力する。
引き外しコイル２３１は，接点装置を開極するための引き外し装置であり，前記漏電検知器からの出力を受け開閉機構部２０８に作用する
【００３４】
このように該２極回路遮断器を電源側端子部と負荷側端子部を結ぶ方向において，電源側端子収納部，本体収納部，負荷側端子収納部と，大きく３つに分けた場合に，電源側端子収納部に電源側端子２１５ａ，２２５ｂおよび，過電流引き外し装置２２３ｂの両方を配設して漏電回路遮断器を構成している。トリップコイル２３１，ＣＴ２３２，漏電検知器２３３からなる漏電引き外し装置は回路遮断器内部に設けられた追加機能や補助機能を配設するスペースに配設されているので，配線用遮断器と同一外形サイズで同部品を用いて漏電遮断器を構成できる。また配線用遮断器に用いた部品と共通化を行うことが可能としている。
【００３５】
２極以上の多極回路遮断器についても，端子収納部位に１ヶ以上の過電流引き外し装置を端子と側壁の間に設け，薄型化を図った回路遮断器を構成することが可能である。
【００３６】
【発明の効果】
以上のように本発明によれば，薄型化を目的とした多極回路遮断器において，回路遮断器としての機能を損なわずに，外形サイズを変更せず内部に機能追加が可能なスペースを確保することができる多極配線用遮断器及び多極漏電遮断器を提供することができ，また配線用遮断器と漏電遮断器において同一の外形サイズで構成可能な多極回路遮断器を提供することができる。
【図面の簡単な説明】
【図１】本件発明による第一の実施例の図
【図２】ケースの状態図
【図３】電源側端子部の構造図
【図４】本件発明による第一の実施例の図
【符号の説明】
１ａ，１ｂケース
２操作ハンドル
３絶縁壁
５回動部材
６可動接触子
７可動接触子
８開閉機構部
９固定接触子
１０固定接触子
１２可動接点
１３可動接点
１４固定接点
１５固定接点
２３ａ過電流引き外し装置
２３ｂ過電流引き外し装置
２４ａ負荷側端子
２４ｂ負荷側端子部
２５ａ電源側端子
２５ｂ電源側端子
２６リンク
２７過電流引き外し素子
２８固定電磁片
２９可動電磁片
３０母線
１００，１０１接点装置
２０１ａ，２０１ｂケース
２０２操作ハンドル
２０３絶縁壁
２０５回動部材
２０６可動接触子
２０７可動接触子
２０８開閉機構部
２０９固定接触子
２１０固定接触子
２１２可動接点
２１３可動接点
２１４固定接点
２１５固定接点
２２３ａ過電流引き外し装置
２２３ｂ過電流引き外し装置
２２４ａ負荷側端子
２２４ｂ負荷側端子部
２２５ａ電源側端子
２２５ｂ電源側端子
２２７過電流引き外し素子
２２８固定電磁片
２２９可動電磁片
２３０母線
２００，２０１接点装置
２３１引き外しコイル
２３２零相変流器
３００導体
３０１バイメタル
３０２電磁素子
３０３導体
３０４バイメタル
３０５電磁素子
２３０１バイメタル
２３０２電磁素子
２３０４バイメタル
２３０５電磁素子[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a multi-pole circuit breaker that is reduced in thickness, and more particularly to a multi-pole circuit breaker that has the same outer size and can be multi-functional such as adding a leakage protection function.
[0002]
[Prior art]
In the conventional multipole circuit breaker, when the circuit breaker is a circuit breaker for wiring, it is provided between the terminal housing part on the power supply side and the load side located on both sides and the terminal housing part, An opening / closing mechanism for opening / closing the main body, and a main body housing part including an overcurrent tripping device for opening the contact device by acting on the opening / closing mechanism with an excessive current. In the case of an earth leakage circuit breaker, the power supply side and load side terminal storage parts located on both sides, the contact device, the opening / closing mechanism part for opening and closing the contacts, An overcurrent tripping device that acts on the mechanism to open the contact device, and a main body housing part that includes an earth leakage trip device that detects the unbalanced current and acts on the switching mechanism to open the contact device. Was configured.
[0003]
[Problems to be solved by the invention]
However, when maintaining the function as a circuit breaker while reducing the width of the conventional multipole circuit breaker in the thickness direction and making it more multifunctional inside the main body storage part, for example, adding a function such as leakage breaker is added. However, it was difficult to add the space for additional parts in the circuit breaker.
[0004]
Accordingly, the object of the present invention is to reduce the width in the thickness direction while maintaining the function as a circuit breaker in a multipolar circuit breaker, and to provide a circuit breaker for wiring protection and a circuit breaker for leakage protection. It is an object of the present invention to provide a multi-pole circuit breaker that can secure an internal space for multi-functionality such as addition of a leakage breaker function without impairing the identity of the outer size of the breaker.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, claim 1 includes a terminal housing part on both sides, and a case having a main body housing part between the terminal housing parts on both sides,
A multi-pole including a contact device located between terminals on both sides, a mechanism for opening and closing the contact device, and at least one overcurrent tripping device for opening the contact device by acting on the switching mechanism with an excessive current In circuit breaker,
Provided is a multi-pole circuit breaker characterized in that at least one overcurrent tripping device is arranged in a terminal housing part on one side of a case, and a contact device and an opening / closing mechanism part are arranged in a main body housing part. Is.
[0006]
Further, in claim 2, a terminal housing part on both sides, a case having a body housing part between the terminal housing parts on both sides,
A contact device located between the terminals on both sides, a mechanism for opening and closing the contact device, at least one overcurrent tripping device that acts on the open / close mechanism by excessive current to open the contact device, and an unbalanced current In a multi-pole circuit breaker including an earth leakage trip device that detects an electric current and acts on the switching mechanism to open the contact device, the at least one overcurrent trip device is arranged in a terminal housing part on one side of the case. And providing a multi-pole circuit breaker with an earth leakage tripping device arranged in the body housing part for detecting an unbalanced current between the contact device and the switching mechanism and acting on the switching mechanism to open the contact device. is there.
[0007]
Further, in claim 3, a terminal housing part on both sides, a case having a main body housing part between the terminal housing parts on both sides,
2 poles including a contact device located between terminals on both sides, a mechanism portion for opening and closing the contact device, and at least one overcurrent trip device for acting on the opening and closing mechanism portion with an excessive current to open the contact device In circuit breaker,
The terminal housing part on one side is provided with terminals of both poles with a height shifted in a direction perpendicular to the mounting bottom surface, and the at least one overcurrent tripping device is arranged in both terminals in the terminal housing part on one side. A two-pole circuit breaker disposed between the terminal and the side wall of the case is provided.
[0008]
Further, in claim 4, a case having terminal storage parts on both sides, and a main body storage part between the terminal storage parts on both sides,
A contact device located between the terminals on both sides, a mechanism for opening and closing the contact device, at least one overcurrent tripping device that acts on the open / close mechanism by excessive current to open the contact device, and an unbalanced current In a two-pole circuit breaker that includes an earth leakage trip device that detects contact and acts on the switching mechanism to open the contact device, the height of the terminal housing part on one side is shifted in the direction perpendicular to the mounting bottom surface. The at least one overcurrent tripping device provides a two-pole circuit breaker arranged between the terminals of both poles and the side wall of the case in the terminal storage part on one side. is there.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0010]
As a first embodiment, a case where the circuit breaker is a two-pole circuit breaker will be described. FIG. 1 shows the internal structure when the circuit breaker of the present invention is OFF. The circuit breaker is provided with two overcurrent tripping devices.
[0011]
As shown in FIG. 2, the outside of the circuit breaker includes a case 1 a, a case 1 b, and an insulating wall 3. In FIG. 1, 2 is an operation handle, 5 is a rotating member, 6 and 7 are movable contacts, 8 is an opening / closing mechanism, 9 and 10 are fixed contacts, 12 and 13 are movable contacts, and 14 and 15 are fixed contacts. , 23a and 23b are overcurrent tripping devices, 24a and b are load side terminals, 25a and 25b are power supply side terminals, 28 is a fixed electromagnetic piece, 29 is a movable electromagnetic piece, and 30 is a bus bar.
[0012]
Reference numerals 100 and 101 denote contact devices. In the contact devices 100 and 101, a movable contact 12 and a fixed contact 14 and a movable contact 13 and a fixed contact 15 are formed in pairs. Further, the case 1 is provided with fixed contacts 9 and 10, and fixed contacts 14 and 15 are provided at respective end portions.
[0013]
The mechanism unit 8 opens and closes the contact devices 100 and 101. The mechanism portion includes a link 26, an operation handle 2, and a rotating member 5, and the movable contacts 12 and 13 are opened and closed with respect to the fixed contacts 14 and 15 by the operation of the operation handle 2.
[0014]
Movable contacts 6 and 7 are mounted and held on the rotating member 5, respectively.
[0015]
One end of the overcurrent tripping device 23a is connected to the movable contact 7 by a conductor 300 to form a part of an electric circuit. The overcurrent tripping device 23a includes a bimetal 301 and an electromagnetic element 302 that are tripping elements. When an overcurrent occurs, it acts on the switching mechanism 8 to open the movable contacts 12 and 13 from the fixed contacts 14 and 15. One end of the overcurrent tripping device 23b is connected to the stationary contact 9 by a conductor 303 to form a part of an electric circuit. The overcurrent tripping device 23b is also composed of a bimetal 304 and an electromagnetic element 305 as in the case of 23a.
[0016]
The main body is configured to include the operation handle 2, the opening / closing mechanism 8, the contact devices 100 and 101, and one tripping device 23a.
[0017]
The power supply side terminals 25a and 25b are connected to busbars (conductor not shown), and plug-in terminals are used. The power supply side terminals are provided with these power supply side terminals 25a and 25b and an overcurrent tripping device 23b. One end of the overcurrent tripping device 23b is connected to the fixed contact 9 by a conductor and forms a part of the electric circuit. The tripping device 23b is composed of a bimetal 304 and an electromagnetic element 305 as tripping elements. Like the tripping device 23a, when the abnormal current occurs, the tripping device 23b acts on the opening / closing mechanism 8 to move the movable device 23b. The contacts 12 and 13 are operated to open from the fixed contacts 14 and 15.
[0018]
The load side terminals 24a and 24b are terminals for connecting the load side electric wires, and are configured by using quick connection terminals. In addition, the load side terminal storage portion includes load side terminals 24a and 24b.
[0019]
As described above, when the two-pole circuit breaker is roughly divided into three in the direction connecting the power supply side terminal portion and the load side terminal portion, the power supply side terminal storage portion, the main body storage portion, and the load side terminal storage portion, The power supply side terminals 25a and 25b and the overcurrent tripping device 23b are both provided in the side terminal storage portion to constitute a circuit breaker for wiring.
[0020]
FIG. 3 is a schematic structural diagram when the direction of the load-side terminal portion is viewed from the power-source-side terminal portion which is a terminal housing part on one side. The power supply side terminals 25a and 25b are arranged with the power supply terminal portions of both poles shifted in the direction perpendicular to the mounting bottom surface of the circuit breaker, that is, from the mounting bottom surface to the handle surface. The pole power supply side terminal portion 25a is located on the circuit breaker mounting bottom surface side, and is located on the one side wall 310 side.
[0021]
The power supply side terminal portion 25b of the other pole is located on the handle surface side with respect to the previous power supply side terminal portion 25a, and is located on the side of the side wall 311 opposite to the previous 25a. That is, the pair of power supply side terminals are arranged so as to be offset from the center of the both side walls of the power supply side terminal portion to the opposite side walls.
[0022]
The tripping element of the overcurrent tripping device 23b is bent so as to sew between each power supply terminal and the side wall on the opposite side to the side where the respective terminals are offset so as not to contact the power supply side terminals 25a and 25b. It is constructed and arranged in a punched shape.
[0023]
In addition, the power supply side terminals 25a and 25b are arranged with their heights shifted in the direction perpendicular to the bottom surface of the circuit breaker, that is, in the direction of the handle surface, and the power supply terminal portions of both electrodes are arranged close to the same side wall side. It is good also as a positional relationship which arranges the tripping element of an overcurrent tripping device between two power supply side terminals and the remaining side wall.
[0024]
Further, the overcurrent tripping device 23 b may include an electromagnetic element including a fixed electromagnetic piece 28 and a movable electromagnetic piece 29. In this case, the overcurrent tripping device 23b is connected to the power supply side terminal to form a part of the electric circuit, and the current flows through the overcurrent tripping element so that it becomes a magnetic path of the magnetic field generated in the electric circuit. The fixed electromagnetic piece 28 formed on the movable member and the movable member that is urged in one direction by an elastic member so as to be attracted to the fixed electromagnetic piece 28 and to act on the opening / closing mechanism 8 when an overcurrent is generated. And an electromagnetic piece 29. The fixed electromagnetic piece 28 and the movable electromagnetic piece 29 are disposed at a substantially central portion of the power supply side terminal portion so as not to contact the power supply side terminals 25a and 25b. With the above configuration, the overcurrent tripping device can be arranged in the power supply side terminal accommodating portion. Compared with the case where both of the overcurrent tripping devices 23a and 23b are provided in the main body, an empty space is generated in the main body portion corresponding to the space occupied by the overcurrent tripping device provided in the terminal housing portion. It is possible to add additional functions and auxiliary functions.
[0025]
Next, the case where the circuit breaker of the present invention is a two-pole earth leakage breaker will be described. FIG. 4 shows the internal structure of the ground fault circuit breaker of the present invention in the OFF state. The circuit breaker is provided with two overcurrent tripping devices.
[0026]
As shown in FIG. 4, the outside of the circuit breaker includes a case 2010 a, a case 2010 b (not shown), and an insulating wall 203. In FIG. 4, 202 is an operation handle, 205 is a rotating member, 206 and 207 are movable contacts, 208 is an opening / closing mechanism, 209 and 210 are fixed contacts, 212 and 213 are movable contacts, and 214 and 215 are fixed contacts. , 223a and 223b are overcurrent tripping devices, 224a and 224b are load side terminals, 225a and 225b are power supply side terminals, 228 is a fixed electromagnetic piece, 229 is a movable electromagnetic piece, and 231 is a trip coil (hereinafter referred to as a trip coil). , 232 indicates a zero-phase current transformer (hereinafter referred to as CT).
The earth leakage breaker shown in the present embodiment is newly composed of trip coils 231, CT 232, and an earth leakage detector (not shown) in the empty space generated inside the two-pole circuit breaker in the first embodiment shown above. A two-pole earth leakage circuit breaker is configured by arranging an earth leakage tripping device.
[0027]
Reference numerals 200 and 201 denote contact devices. The contact devices 200 and 201 are configured by a set of a movable contact 212 and a fixed contact 214, and a movable contact 213 and a fixed contact 215, respectively. The case 201 is provided with fixed contacts 209 and 210, and fixed contacts 214 and 215 are provided at the respective ends.
[0028]
The mechanism unit 208 opens and closes the contact devices 200 and 201. The mechanism portion includes a link 226, an operation handle 202, and a rotating member 205, and the movable contacts 212 and 213 are opened and closed with respect to the fixed contacts 214 and 215 by the operation of the operation handle 202.
[0029]
Movable contacts 206 and 207 are mounted and held on the rotating member 205, respectively.
[0030]
One end of the overcurrent tripping device 223a is connected to the movable contact 207 by a conductor to form a part of the electric circuit. The overcurrent tripping device 223a includes a bimetal 2301 and an electromagnetic element 2302 that are tripping elements. When an overcurrent occurs, it acts on the opening / closing mechanism 208 to open the movable contacts 212, 213 from the fixed contacts 214, 215. One end of the overcurrent tripping device 223b is connected to the fixed contact 209 by a conductor to form a part of the electric circuit. The overcurrent tripping device 223b is also composed of a bimetal 2304 and an electromagnetic element 2305 which are tripping elements.
[0031]
The main body houses these operation handle 202, opening / closing mechanism 208, contact devices 200 and 201, one tripping device 223a, CT232, tripping coil 231, and leakage detector.
[0032]
The power supply side terminals 225a and 225b are connected to the bus 230, and plug-in terminals are used. The power supply side terminals are provided with these power supply side terminals 225a and 225b and an overcurrent tripping device 223b. One end of the overcurrent tripping device 223b is connected to the fixed contact 209 by a conductor and forms a part of an electric circuit. The tripping device 223b includes a bimetal 2304 and an electromagnetic element 305, which are tripping elements. Like the tripping device 223a, when the abnormal current occurs, the tripping device 223b acts on the opening / closing mechanism 208 to move the movable device 223b. The contacts 212 and 213 work to open the contacts from the fixed contacts 214 and 215.
[0033]
The load-side terminals 224a and 224b are terminals for connecting load-side electric wires, and are configured using quick connection terminals. The load side terminal portion is composed of load side terminals 224a and 224b. The CT 232 is provided with a through hole that penetrates a connection conductor that connects the load side terminal 224 of each pole and the fixed contact 210 or the movable contact 206, and outputs a voltage according to the amount of current flowing through the conductor.
The leakage detector has an amplifying unit that amplifies the output from the CT 232, performs arithmetic processing, and outputs a signal to the tripping coil 231.
The tripping coil 231 is a tripping device for opening the contact device, and receives an output from the leakage detector and acts on the opening / closing mechanism 208.
Thus, when the two-pole circuit breaker is roughly divided into three in the direction connecting the power supply side terminal portion and the load side terminal portion, the power supply side terminal storage portion, the main body storage portion, and the load side terminal storage portion, Both the power supply side terminals 215a and 225b and the overcurrent tripping device 223b are arranged in the power supply side terminal storage portion to constitute a leakage circuit breaker. The earth leakage tripping device comprising trip coils 231, CT 232, and earth leakage detector 233 is disposed in a space for providing additional functions and auxiliary functions provided in the circuit breaker, and therefore has the same outer shape as the circuit breaker for wiring. An earth leakage breaker can be constructed using the same parts in size. It is also possible to share the parts used for the circuit breaker for wiring.
[0035]
Even for multi-pole circuit breakers with two or more poles, it is possible to construct a circuit breaker with a reduced thickness by providing one or more overcurrent tripping devices between the terminal and the side wall in the terminal housing part. .
[0036]
【The invention's effect】
As described above, according to the present invention, in a multi-pole circuit breaker for the purpose of reducing the thickness, the space as an internal function can be secured without changing the external size without impairing the function as a circuit breaker. A multi-pole circuit breaker and a multi-pole earth leakage breaker that can be provided, and a multi-pole circuit breaker that can be configured with the same external size in the wiring breaker and the earth leakage breaker are provided. Can do.
[Brief description of the drawings]
FIG. 1 is a diagram of a first embodiment according to the present invention. FIG. 2 is a state diagram of a case. FIG. 3 is a structural diagram of a power supply side terminal. FIG. 4 is a diagram of a first embodiment according to the present invention. Explanation】
1a, 1b Case 2 Operation handle 3 Insulating wall 5 Rotating member 6 Movable contact 7 Movable contact 8 Opening / closing mechanism part 9 Fixed contact 10 Fixed contact 12 Movable contact 13 Movable contact 14 Fixed contact 15 Fixed contact 23a Overcurrent pulling Removal device 23b Overcurrent trip device 24a Load side terminal 24b Load side terminal portion 25a Power supply side terminal 25b Power supply side terminal 26 Link 27 Overcurrent trip element 28 Fixed electromagnetic piece 29 Movable electromagnetic piece 30 Bus 100, 101 Contact device 201a, 201b Case 202 Operation handle 203 Insulating wall 205 Rotating member 206 Movable contact 207 Movable contact 208 Opening / closing mechanism 209 Fixed contact 210 Fixed contact 212 Movable contact 213 Movable contact 214 Fixed contact 215 Fixed contact 223a Overcurrent tripping device 223b Overcurrent trip device 224a Load side terminal 2 4b Load side terminal portion 225a Power source side terminal 225b Power source side terminal 227 Overcurrent tripping element 228 Fixed electromagnetic piece 229 Movable electromagnetic piece 230 Bus 200, 201 Contact device 231 Trip coil 232 Zero-phase current transformer 300 Conductor 301 Bimetal 302 Electromagnetic Element 303 Conductor 304 Bimetal 305 Electromagnetic element 2301 Bimetal 2302 Electromagnetic element 2304 Bimetal 2305 Electromagnetic element

Claims

A case having terminal storage parts on both sides, and a main body storage part between the terminal storage parts on both sides;
A multi-pole including a contact device located between terminals on both sides, a mechanism for opening and closing the contact device, and at least one overcurrent tripping device for opening the contact device by acting on the switching mechanism with an excessive current In circuit breaker,
A circuit breaker characterized in that said at least one overcurrent tripping device is arranged in a terminal housing part on one side of a case, and a contact device and an opening / closing mechanism part are arranged in a main body housing part.

A case having terminal storage parts on both sides, and a main body storage part between the terminal storage parts on both sides;
A contact device located between the terminals on both sides, a mechanism for opening and closing the contact device, at least one overcurrent tripping device that acts on the open / close mechanism by excessive current to open the contact device, and an unbalanced current In a multi-pole circuit breaker including an earth leakage trip device that detects an electric current and acts on the switching mechanism to open a contact device,
The at least one overcurrent tripping device is disposed in a terminal housing part on one side of the case, detects an unbalanced current between the contact device, the switching mechanism, and acts on the switching mechanism to open the contact device. A circuit breaker characterized in that a tripping device is arranged in a main body storage part.

A case having terminal storage parts on both sides, and a main body storage part between the terminal storage parts on both sides;
2 poles including a contact device located between terminals on both sides, a mechanism portion for opening and closing the contact device, and at least one overcurrent trip device for acting on the opening and closing mechanism portion with an excessive current to open the contact device In circuit breaker,
The terminal housing part on one side is provided with terminals of both poles with a height shifted in a direction perpendicular to the mounting bottom surface, and the at least one overcurrent tripping device is arranged in both terminals in the terminal housing part on one side. A circuit breaker characterized by being arranged between the terminal and the side wall of the case.

A case having terminal storage parts on both sides, and a main body storage part between the terminal storage parts on both sides;
A contact device located between the terminals on both sides, a mechanism for opening and closing the contact device, at least one overcurrent tripping device for opening the contact device by acting on the switching mechanism with an excessive current, and an unbalanced current In a two-pole circuit breaker including an earth-leakage tripping device that detects the current and acts on the switching mechanism to open the contact device,
The terminal housing part on one side is provided with terminals of both poles with a height shifted in a direction perpendicular to the mounting bottom surface, and the at least one overcurrent tripping device is arranged in both terminals in the terminal housing part on one side. A circuit breaker characterized by being arranged between the terminal and the side wall of the case.