JP4604366B2 - Residential distribution board - Google Patents

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Publication number
JP4604366B2
JP4604366B2 JP2001052668A JP2001052668A JP4604366B2 JP 4604366 B2 JP4604366 B2 JP 4604366B2 JP 2001052668 A JP2001052668 A JP 2001052668A JP 2001052668 A JP2001052668 A JP 2001052668A JP 4604366 B2 JP4604366 B2 JP 4604366B2
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Japan
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circuit breaker
branch circuit
contact
handle
cover
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JP2001320808A (en
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亘 永野
剛 矢野
広和 進
芳三 金平
孝信 田中
初男 水野
孝 北村
満 富田
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Panasonic Corp
Panasonic Electric Works Co Ltd
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Panasonic Corp
Matsushita Electric Works Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、カバーを外さずに主幹回路遮断器および分岐回路遮断器の各ハンドルを操作できる一般家庭用の住宅用分電盤に関する。
【0002】
【従来の技術】
この種の分電盤としては、特開平9−215128号公報に記載されたものが知られている。この公報に記載された分電盤では、図18に示すように、主幹回路遮断器(主幹ブレーカ)および複数の分岐回路遮断器(分岐ブレーカ)を前面開口したボディ10’に収納し、ボディ10’の前面には主幹回路遮断器、分岐回路遮断器それぞれの操作部であるハンドル31a’,32a’を露出させる窓孔21’,22’を設けたカバー20’を取り付けてある。ここに、各ハンドル31a’,32a’は、当該ハンドル31a’,32a’の操作により開閉される接点が開成状態と閉成状態とのいずれの場合にもカバー20’の前面よりも突出している。なお、ボディ10’とカバー20’とで箱体1’を構成している。
【0003】
【発明が解決しようとする課題】
ところで、上記公報に記載された分電盤では、分岐回路遮断器のハンドル32a’が接点の閉成状態においてもカバー20’の前面から突出しており、しかも複数個の分岐回路遮断器が並設されているので、分岐回路遮断器のハンドル32a’が誤って操作されてしまう恐れがあった。接点の閉成状態においてハンドル32a’が誤って操作されると、使用している負荷に大きな負担がかかってしまい、最悪の場合には負荷が壊れてしまうという恐れがあった。
【0004】
本発明は上記事由に鑑みて為されたものであり、その目的は、分岐回路遮断器のハンドルが誤操作される恐れを少なくした住宅用分電盤を提供することにある。
【0005】
【課題を解決するための手段】
請求項1の発明は、一面開口したボディと、器体の前面側に突出したボス部に前記器体内の接点を開閉するためのハンドルが配設され前記ボディに納装された主幹回路遮断器および複数の分岐回路遮断器と、ボディの開口側に結合され前記主幹回路遮断器および前記分岐回路遮断器のボス部に対応した窓孔を有したカバーとを備え、前記分岐回路遮断器のハンドルが前記接点の閉成状態において前記ボス部の前端縁と同一平面上に揃い且つカバーの前面側へ突出しない位置にあることを特徴とするものであり、前記分岐回路遮断器の接点が閉成状態のときに誤ってハンドルが操作される恐れを少なくすることができ、分岐回路遮断器に接続された負荷に負担がかかるのを防止することができる。
【0006】
請求項2の発明は、一面開口したボディと、器体の前面側に突出したボス部に前記器体内の接点を開閉するためのハンドルが配設され前記ボディに納装された主幹回路遮断器および複数の分岐回路遮断器と、ボディの開口側に結合され前記主幹回路遮断器および前記分岐回路遮断器のボス部に対応した窓孔を有したカバーとを備え、前記分岐回路遮断器のハンドルは、一端部が前記器体に枢着され、他端部が前記接点の閉成された状態において前記ボス部の前端縁と同一平面上に揃い且つカバーの前面側へ突出しない位置と、前記接点の開成された状態において上記窓孔を通してカバーの前面側へ突出する位置との間で回動自在であることを特徴とするものであり、前記分岐回路遮断器の接点が閉成状態のときに誤ってハンドルが操作される恐れを少なくすることができ、分岐回路遮断器に接続された負荷に負担がかかるのを防止することができる。
【0007】
請求項3の発明は、請求項1または請求項2の発明において、前記主幹回路遮断器のハンドルが前記接点の閉成状態において前記ボス部の前面と同一平面上に揃い且つ前記カバーの前面側へ突出しない位置にあるので、前記主幹回路遮断器の接点が閉成状態のときに誤ってハンドルが操作される恐れを少なくすることができ、各分岐回路遮断器にそれぞれ接続された負荷に負担がかかるのを防止することができる。
【0008】
請求項4の発明は、請求項1または請求項2の発明において、前記主幹回路遮断器のハンドルは、一端部が前記器体に枢着され、他端部が前記接点の閉成された状態において前記ボス部の前面と同一平面上に揃い且つ前記カバーの前面側へ突出しない位置と、前記接点の開成された状態において前記窓孔を通して前記カバーの前面側へ突出する位置との間で回動自在であるので、前記主幹回路遮断器の接点が閉成状態のときに誤ってハンドルが操作される恐れを少なくすることができ、各分岐回路遮断器にそれぞれ接続された負荷に負担がかかるのを防止することができる。
【0009】
請求項5の発明は、請求項1ないし請求項4の発明において、前記分岐回路遮断器が横並びに偶数個並設され、前記カバーの前面における前記窓孔の周縁であって且つ前記分岐回路遮断器の並設方向に直交する方向の両側に、前記分岐回路遮断器の使用負荷を区別する表示の設けられたシールが貼着され、前記シールには、前記並設方向において隣り合う2つの分岐回路遮断器を1組として区別する分割線が表記され、前記並設方向に直交する方向の一側に貼着されたシールには、前記隣り合う2つの分岐回路遮断器の一方に対応して前記表示が設けられ、前記並設方向に直交する方向の他側に貼着されたシールには、前記隣り合う2つの分岐回路遮断器の他方に対応して前記表示が設けられているので、各分岐回路遮断器の使用負荷を表示する場所を十分に確保することができ、使用負荷の名称などの表示を見やすくすることができるから、分岐回路遮断器のハンドルが誤って操作される恐れをさらに少なくすることができる。
【0010】
請求項6の発明は、請求項5の発明において、前記シールは、前記並設方向において前記隣り合う2つの分岐回路遮断器の一方を前記表示に対応するものとして区別するように線で表示されたマークを設けてあるので、前記表示が隣り合う2つの分岐回路遮断器のどちらに対応しているのか容易に判別することができる。
【0011】
【発明の実施の形態】
(実施形態1)
本実施形態は、住宅用分電盤は、図3に示すように、1つの主幹回路遮断器31と複数の分岐回路遮断器32と後述の自立回路遮断器33とを箱体1の中に配置した分電盤であって、分岐回路遮断器32は複数設けられ上下2列でそれぞれ横並びに並設してある。箱体1は合成樹脂成形品であって、矩形枠状のボディ10と、ボディ10の前面側(図3における右下向き面側)に結合されるカバー20とで構成される。
【0012】
ボディ10は、図3ないし図5に示すように、矩形枠状に形成された底板11の外周縁の全周に亘って周壁12が前方に突設された形状に形成され(つまり、ボディ10は前面が開口されている)、底板11の中央部には矩形状に開口した開口窓13が形成される。底板11には左右2個ずつの支持台14a,14bが突設されている。両支持台14a,14bの周囲にはそれぞれ断面L字状であって矩形領域の角部をなすように配列されたガイド壁15a,15bが形成される。上側の支持台14aには下方に隣接して底板11からの突出寸法が支持台14aよりもやや大きい抜止ボス16が形成される。また、下側の支持台14bの周囲に設けたガイド壁15bの前端面には下半分程度の受け片17が連続一体に形成されている。ここに、底板11から受け片17までの距離は底板11から支持台14bの先端面までの距離よりもやや大きく設定されている。
【0013】
底板11における開口窓13の周縁は全周に亘って前方に突出する補強突条18を形成しており、補強突条18により開口窓13の周部が補強されている。つまり、比較的大面積である開口窓13を形成しながらも、補強突条18により剛性を保つことができる。さらに、補強突条18における開口窓13の上下の部位には、後述の橋絡部材131の上下の各端部それぞれを固定するための通し孔19が左右方向に等ピッチで形成される。
【0014】
橋絡部材131は、図5に示すように、底板11における開口窓13の上下方向の幅寸法よりも上下の幅寸法が大きい寸法に形成されている。橋絡部材131は、上下方向(長手方向)に沿った両端部それぞれが上記補強突条18に載置され、通し孔19に螺入される取付ねじ132(図5参照)を用いてボディ10に固定される。ここに、橋絡部材131の長手方向の中間部には両端部よりも前方へ突出し後述の架台40の一端部(図5における左端部)を支持する支持台130が一体に設けられている。支持台130の長手方向における両端部の前面には、架台40を固定するための固定孔135,135(図3参照)が設けられている。両固定孔135,135の周囲にはそれぞれ底板11の右側のガイド壁15a,15bとともに矩形領域の角部をなすように配列された断面L字状のガイド壁136a,136bが形成される。支持台130の上端部の前面において、固定孔135の下方の近傍には抜止ボス133が突設されている。また、下側の固定孔135の周囲に設けたガイド壁136bの前端面には下半分程度の受け片138(図5参照)が連続一体に形成されている。
【0015】
カバー20は、後端部外周面がボディ10の周壁12の前端部外周面にほぼ一致する。カバー20は、図1ないし図3に示すように、ボディ10に収納される主幹回路遮断器31、分岐回路遮断器32、自立回路遮断器33の操作部であるハンドル31a,32a,33aが配設されたボス部31b,32b,33bを露出させる窓孔21,22,23を有している。本実施形態では、分岐回路遮断器32は上下2列で1列6個ずつ横並びに並設されており、カバー20の窓孔22は6個の分岐回路遮断器32のボス部32bを一括して露出させるように形成されている。つまり、カバー20には、上下2列で並設された複数の分岐回路遮断器32に対応した上下2個の窓孔22が形成される。ここにおいて、分岐回路遮断器32は、ボス部32bが矩形枠状に形成されており、図4に示すように、ボス部32bの前端縁とカバー20前面における窓孔22周縁とがほぼ同一面上に揃うようにボディ10内に配設される。
【0016】
ボディ10に形成した右側の支持台14a,14bと、ボディ10の開口窓13の上下両縁の補強突条18間に橋絡された橋絡部材131に突設した支持台130との間には、主幹回路遮断器31や分岐回路遮断器32などの内器を取り付けるための架台40が架設される。
【0017】
架台40は、全体としては矩形状の平面形状をなし、四隅にそれぞれ設けた支持片41a,41a,41b,41bのうち図5における右側の2つ支持片41b,41bがそれぞれボディ10の底板11から突設された支持台14a,14bに載置されるとともに、図5における左側の2つの支持片41a,41aが橋絡部材131の中間部に突設した支持台130に載置され、右側の支持台14a,14bに螺入される取付ねじ42を用いて右端部がボディ10に固定され、左側の支持台130の固定孔135に螺入される取付ねじ42を用いて左端部が支持台130に固定される。
【0018】
ここに、各支持片41,41bには取付ねじ42の頭部の直径よりも大きい丸孔状の大径部の上縁の一部に取付ねじ42の直径よりも幅狭の溝部が連続する鍵穴状に形成された取付孔43が形成されている。したがって、取付ねじ42を支持台14a,14b、支持台130の固定孔135,135に緩く螺入した状態で、取付ねじ42の頭部に取付孔43の大径部を通し、取付ねじ42の頭部を溝部に対応する部位までスライドさせた後に取付ねじ42を締め付けるようにすることによって、ボディ10への架台40の取付作業を容易に行うことができる。また、上述したように支持台14a,14bの周囲にはガイド壁15a,15bが形成され、支持台130の固定孔135の周囲にはガイド壁136a,136bが形成されているから、架台40の取付位置をガイド壁15a,15b,136a,136bに合わせることで位置決めが容易にでき、その上、下側のガイド壁15b,136bには受け片17,138が形成されているから、下側の支持片41b,41aの一部を受け片17,138の後面側に重複させることで、取付ねじ42が外れても受け片17,138で架台40の荷重を受けることができる。さらに、取付孔43の溝部に取付ねじ42を挿入した状態では、取付孔43の大径部に抜止ボス16,133が挿入されるように抜止ボス16,133の位置が設定されており、取付ねじ42を締め付けた後には、支持片41b,41aはボディ10に対して回り止めされることになる。また、抜止ボス16,133が取付孔43の大径部に挿入されることによって、取付ねじ42が多少緩んでも支持片41b,41aのがたつきが禁止される。例えば、地震などの外部振動によって取付ねじ42に経年的な緩みが多少生じたとしても、ボディ10に対して架台40が移動したり脱落したりするのを防止することができる。
【0019】
架台40を構成する部材のうち主幹回路遮断器31を取り付ける部材としての主幹用取付板50は、図5および図6に示すように、ボディ10に形成した開口窓13の上下の幅寸法よりも上下の幅寸法が小さい縦長の長方形状に板金(鉄板)により形成されている。主幹用取付板50の長手方向に沿った左側縁には上下一対の上記支持片41aが突設され、右側縁には上下一対の連結片51が突設される。連結片51は断面コ字状であり、支持片41aの取付孔43と同様の鍵穴状の連結孔52が形成されている。なお、架台40において分岐回路遮断器32を取り付ける部材としては、図4および図5に示すような上下一対のフレーム45a,45bと、両フレーム45a,45b間に架設される取付板46とを備えており、両フレーム45a,45bの長手方向の一端部(右端部)が上述の支持片41b,41bとなる。また、両フレーム45a,45bの長手方向の他端部(左端部)には連結ねじ47が螺合する連結ねじ孔(図示せず)が形成されており、連結孔52を通して連結ねじ47を連結ねじ孔に螺合させることで主幹用取付板50と両フレーム45a,45bとを連結してある。
【0020】
主幹用取付板50の左側部には2個の連結孔55が形成されている。本実施形態では、主幹回路遮断器31が遮断された状態でも火災報知器などへの電源を確保することができるように、主幹回路遮断器31の電源側から電源を得る自立電源系を設けてあり、自立電源系には分岐回路遮断器32とは別に内器としての上記自立回路遮断器33が挿入される。自立回路遮断器33は分岐回路遮断器32と同構成を有するものであり、電源側には導電バー(後述する)が挿入接続されるスリット状の3つの端子部34a〜34cが設けられる。自立回路遮断器33においては中央の端子部34bには導電バーを接続する部材が設けられておらず、端子部34a,34cのみが有効に利用される。また、自立回路遮断器33の器体には長手方向の一端面に取付溝35が形成されている。
【0021】
自立回路遮断器33は、主幹用取付板50に連結された補助取付板60に取り付けられる。補助取付板60は矩形状に形成され右側縁に段差部61を介して2枚の連結片62が延設されている。各連結片62には連結孔63が形成され、連結孔63を通して主幹用取付板50に設けた連結孔55に連結ねじ64を螺入すると、主幹用取付板50に補助取付板60を連結することができる。
【0022】
補助取付板60は自立回路遮断器33の左右幅にほぼ等しい左右幅を有し、自立回路遮断器33を補助取付板60の前面側に載せたときに自立回路遮断器33の左右両側面に当接する支持片67を左右両側縁に一体に備える。また、補助取付板60の長手方向の一端縁(下端縁)には自立回路遮断器33の取付溝35に挿入される取付係止片65が一体に設けられている。補助取付板60の長手方向の他端部(上端部)には中継端子台70を取り付けるための固定孔66が形成されている。
【0023】
中継端子台70は、自立回路遮断器33の端子部34a〜34cに挿入接続される3本のバー端子71a〜71cが合成樹脂成形品の基台72に突設されるとともに、各バー端子71a〜71cに電気的に接続された端子ねじ付きの端子73とを備えるものである。ここで、バー端子71a,71bは電気的に接続されている。したがって、端子73は2端子になっており、各端子73は接続電線74(図5参照)を介して主幹回路遮断器31の電源側における一方の電圧極と中性極との各端子にそれぞれ接続される。つまり、中継端子台70は、主幹回路遮断器31に接続された接続電線74という電路の形状から自立回路遮断器33の端子部34a〜34cに対応するバー端子71a〜71cという電路の形状に変換する機能を有する。また、基台72には補助取付板60の固定孔66に対応する貫通孔75が形成され、貫通孔75を通して挿入される固定ねじ76を固定孔66に螺合させることによって、中継端子台70を補助取付板60に固定することができる。
【0024】
しかして、補助取付板60に設けた取付係止片65を自立回路遮断器33に設けた取付溝35に挿入する形で自立回路遮断器33を左右の支持片67間に配置した後、端子部34a〜34cにバー端子71a〜71cを挿入接続した状態で中継端子台70を固定ねじ76によって補助取付板60に固定すると、自立回路遮断器33は補助取付板60と中継端子台70とによって保持され、補助取付板60に対して固定することができる。自立回路遮断器33では端子部34a,34cだけがバー端子71a,71cに電気的に接続されるから、自立回路遮断器33には一方の電圧極と中性極との間の電圧が印加される。
【0025】
ところで、ボディ10には、図4および図5に示すように、主幹回路遮断器31及び複数の分岐回路遮断器32が配設された架台40の他に、木板141が取り付けられた木板取付台140も収納されている。ここに、木板取付台140は、右側面から突設された引掛突起142,142を用いて橋絡部材131に着脱自在に取り付けられる。橋絡部材131の左側の側面には、引掛突起142よりも前後方向の幅が大きい矩形状の幅広部の下縁の一部に引掛突起142よりも幅狭の矩形状の幅狭部が連続するL字状の引掛孔137が形成されている。したがって、木板取付台140は、引掛突起142を引掛孔137の幅広部から挿入し木板取付台140を下方に移動させて引掛突起142を引掛孔137の幅狭部の開口周縁に重複させることで橋絡部材131に取り付けられる。
【0026】
また、木板取付台140は、左側の側面から突設した2つの取付片143,143がボディ10の底板11から突設した支持台44a,44b(図3参照)に載置され、取付ねじ145(図5参照)を用いてボディ10に固定される。ここに、各取付片143,143には、下側が開放され取付ねじ145,145が挿通される取付溝144,144(図3参照)が形成されている。
【0027】
ところで、分岐回路遮断器32は、図7および図8に示すような構成を有し、電源側には導電バー110a〜110c(図4および図5参照)が接続されるスリット状の3つの端子部37a〜37cが設けられる。分岐回路遮断器32においては中央の端子部37bには導電バーを接続する部材が設けられておらず、端子部37a,37cのみが有効に利用され、端子部37aに中性極の導電バー110aが接続され、端子部37cに電圧極の導電バー110b,110cのいずれか一方が接続される。要するに、分岐回路遮断器32は、架台40において左右方向に沿って配設された導電バー110a〜110cに端子部37a〜37cが接続されており、上下2列のうち上列の分岐回路遮断器32は、下端部に端子部37a〜37cが位置するように配設され、下列の分岐回路遮断器32は上端部に端子部37a〜37cが位置するように配設されている。
【0028】
なお、電圧極の2本の導電バー110b,110cの短手方向(図4における上下方向)の一側縁には前方に向かって接続片111(図4参照)が突設される。接続片111には2本の端子挿入片111b,111cが延設され、一方の端子挿入片111cは接続片111から導電バー110b,110cに対向するように接続片111に対して直交方向に延長され、他方の端子挿入片111bは導電バー110b,110cから離れるように接続片111に対して直交方向に延長される。また、導電バー110b,110cから端子挿入片111bまでの距離は端子挿入片111cまでの距離よりも大きくなっている。したがって、端子挿入片111b,111cは前後に位置することになる。さらに、互いに他方の導電バー110b,110cに設けた端子挿入片111b,111cが前後に位置し、かつ両端子挿入片111b,111cの位置が上下左右に揃うように位置する。このような配置によって、前後に並ぶ2つの端子挿入片111b,111cは互いに他の導電バー110b,110cに接続されることになる。ここで、中性極の導電バー110aの短手方向の端縁も上下方向における位置が両端子挿入片111b,111cの先端縁と一致する。異なる導電バー110b,110cに設けた接続片111は隔壁101によって絶縁される。なお、端子部37bには導電バー110b,110cのいずれか一方の端子挿入片111bが挿入され、端子部37cには導電バー110b,110cの他方の端子挿入片111cが挿入される。
【0029】
導電バー110a〜110cは、図5に示すように、主幹回路遮断器31の負荷側の端子(以下、負荷側端子と称す)84と接続部材38を介して電気的に接続される。接続部材38は樹脂成形品の保持体38aにより電路となる導電板よりなる送りバー38bを保持したものであり、送りバー38bを介して各導電バー110a〜110cが主幹回路遮断器31に電気的に接続される。送りバー38bと導電バー110a〜110cとは固定ねじ117を用いて外れないように接続される。
【0030】
また、分岐回路遮断器32は、器体の前面側に突出した矩形枠状のボス部32bに器体内の接点30を開閉するためのハンドル32aが配設されているが、このハンドル32aは、一端部26が器体に枢着され、他端部が接点30の閉成された状態(図7の状態)においてボス部32bの開口面から突出しない位置と、接点30の開成された状態(図8の状態)においてボス部32bの開口面から突出する位置との間で回動自在となっている。ここにおいて、ボス部32bは、矩形枠状に形成されており、ハンドル32aは接点30の閉成された状態でボス部32bの開口面から突出しないようになっている。言い換えると、接点30の閉成した状態では、ハンドル32aとボス部32bの前端縁とが略同一平面上に揃うようになっている。また、ボディ10にカバー20を取り付けた状態では、図4に示すように、ボス部32bの前端縁とカバー20前面における窓孔22の周縁とが同一平面上に位置する。したがって、ハンドル32aは、接点30の閉成状態においてカバー20の前面へ突出しない位置と、接点30の開成状態においてカバー20前面へ突出する位置との間で回動自在となる。ここにおいて、ハンドル32aは接点30の閉成状態においてボス部32bの長手方向における一端側(図7においては下側)の内側縁との間に隙間が形成されるので、カバー20の窓孔22を通してハンドル32aを操作できる。
【0031】
分岐回路遮断器32の接点30は、器体内に収納された端子板27に設けられた固定接点27aと、ハンドル32aの開閉操作に応じて弾性変形する可動接触子28に設けられ固定接点27aに離接する可動接点28aとで構成される。ここに、分岐回路遮断器32の器体には、電線挿入口36を通して器体に挿入された電線(図示せず)を端子板27との間で保持する鎖錠ばね29や、トリップ機構部48なども収納されている。なお、上述の端子板27と鎖錠ばね29とで構成される端子は、電線を電線挿入口36を通して器体に挿入するだけで鎖錠ばね29により電線の抜け止めおよび接続が可能になるものであって、速結端子と呼ばれている。
【0032】
しかして、本実施形態では、分岐回路遮断器32の接点30が閉成状態のときには、ハンドル32aがカバー20の前面に突出しない位置にあるので、分岐回路遮断器32の接点30が閉成状態のときに誤ってハンドル32aが操作される恐れを少なくすることができ、分岐回路遮断器32に接続された負荷に負担がかかるのを防止することができる。
【0033】
また、本実施形態では、カバー20の前面における窓孔22の周縁であって且つ分岐回路遮断器32の並設方向に直交する方向の両側(つまり、窓孔22の上下)に、分岐回路遮断器32に接続される負荷(使用負荷)を区別する表示の設けられたシール24が貼着される。シール24には、分岐回路遮断器32の並設方向において隣り合う2つの分岐回路遮断器を1組として区別する分割線24a(図2参照)が表記され、窓孔22の上側に貼着されたシール24には、隣り合う2つの分岐回路遮断器32の一方に対応して前記表示が設けられ、窓孔22の下側に貼着されたシールには、隣り合う2つの分岐回路遮断器の他方に対応して前記表示が設けられているので、各分岐回路遮断器32の使用負荷を表示する場所を十分に確保することができ、使用負荷の名称などの表示を見やすくすることができるから、分岐回路遮断器32のハンドル32aが誤って操作される恐れをさらに少なくすることができる。
【0034】
また、シール24は、分岐回路遮断器32の並設方向において隣り合う2つの分岐回路遮断器32の一方を前記表示に対応するものとして区別するように線で表示されたマーク24bを設けてあるので、前記表示が隣り合う2つの分岐回路遮断器32のどちらに対応しているのか容易に判別することができる。
【0035】
なお、本実施形態においては、12個の分岐回路遮断器32を2列に分けて各列ごとに6個の分岐回路遮断器32を並設してあるが、例えば木板取付台140を設ける必要がなく分岐回路遮断器32の数を増やす場合には、架台40の左右方向の幅寸法を大きくして、架台40の左端部の支持片41a,41aをボディ10の左側の支持台14a,14bに載置して取付ねじ42を用いてボディ10に固定するようにしてもよい。また、上述の通し孔19は分岐回路遮断器32の並設方向における分岐回路遮断器32の幅寸法に対応する間隔で左右方向に等ピッチで形成されているので、木板取付台140を必要としない場合には、各列に並設する分岐回路遮断器32の数を増減することもできる。
【0036】
(実施形態2)
本実施形態の住宅用分電盤は、図11に示すように、1つの主幹回路遮断器31と複数の分岐回路遮断器32とを箱体1の中に配置した分電盤であって、複数個(本実施形態では、8個)の分岐回路遮断器32を横並びに並設してある。箱体1は、前面開口したボディ10と、ボディ10の前面側に結合されるカバー20とで構成される。
【0037】
ボディ10は、図11ないし図13に示すように、外周形状が矩形状に形成された底板11の外周縁の全周に亘って周壁12が前方に突設された形状に形成されている。また、底板11は、前面側に主幹回路遮断器31が載置される主幹用取付台112、前面側に合成樹脂成形品であるバー支持部材120が載置されるバー支持部材取付台113、前面側に分岐回路遮断器32が取り付けられる分岐用取付台114が連続一体に形成されている。分岐用取付台114はバー支持部材取付台113の下方に隣接して底板11からの突出寸法がバー支持部材取付台113よりもやや大きく設定されており、分岐用取付台114の上端縁が段差部118を介してバー支持部材取付台113の下端縁と連結されている。また、底板11は、主幹用取付台112の上方に電線挿通孔115aが開口され、バー支持部材取付台113の上方に電線挿通孔115bが開口され、分岐用取付台1114の下方に電線挿通孔115cが開口されている。なお、各電線挿通孔115a〜115cは底板11にあらかじめ切除可能なノックアウト部を形成しておき適宜に切除することによって形成してもよい。
【0038】
バー支持部材120は中性極の導電バー110aと2本の電圧極の導電バー110b,110cとの3本の導電バー110a〜110cを保持できるように構成されている。すなわち、バー支持部材120は、電圧極の2本の導電バー11b,110cが前面に重ねて取り付けられる矩形状の載置片126の上下方向の中央部に前方に突出した左右方向の隔壁101(図14参照)を有し、隔壁101における左右方向の両端部には前方に突出する支持ポスト125(図11参照)が形成されており、中性極の導電バー110aは2つの支持ポスト125の間に架設される。
【0039】
なお、電圧極の2本の導電バー110b,110cの短手方向(図14における上下方向)の一側縁には前方に向かって接続片111(図14参照)が突設される。接続片111には2本の端子挿入片111b,111cが延設されている。ここに、端子挿入片111b,111cは、互いに他方の導電バー110b,110cに設けた端子挿入片111c,111bが前後に位置し、かつ両端子挿入片111b,111cの位置が左右に揃って位置するように延長されている。
このような配置によって、前後に並ぶ2つの端子挿入片111b,111cは互いに他の導電バー110b,110cに接続されることになる。ここで、中性極の導電バー110aの短手方向の一端縁(図14における下端縁)も上下方向における位置が両端子挿入片111b,111cの先端縁と一致する。異なる導電バー110b,110cに設けた接続片111は隔壁101によって絶縁される。なお、分岐回路遮断器32は実施形態1で説明したものと同じであって、分岐回路遮断器32の端子部37bには導電バー110b,110cのいずれか一方の端子挿入片111bが挿入され、端子部37cには導電バー110b,110cの他方の端子挿入片111cが挿入される。要するに、分岐回路遮断器32は、バー支持部材120において左右方向に沿って配設された導電バー110a,110b,110cに器体の一端部に設けた電源側端子である端子部37a〜37cが接続され、器体の他端部に設けた負荷側端子である速結端子に接続する電線は電線挿通孔115cを挿通させればよい。
【0040】
ところで、バー支持部材120の右端部の後面には先端部が載置片126の右端縁よりも外側に突出する2つのL字状の係止片(図示せず)が突設され、バー支持部材120の左端部の上面および下面には矩形状の被引掛片121が突設されている。各係止片はバー支持部材取付台113に設けた保持孔123にそれぞれ挿入され、係止片が保持孔123に引掛係止される。また、被引掛片121はバー支持部材取付台113の左端部の近傍で底板11から連続一体に突設された一対の引掛部122に引掛係止される。なお、引掛部122は、断面L字状に形成されたガイド壁122aと、ガイド壁122aの前端面に連続一体に形成された受け片122bとで構成されている。したがって、バー支持部材取付台113の保持孔123に上記係止片を前方から挿入した後、バー支持部材120をバー支持部材取付台113の前面に沿って右方向にスライドさせることで上記係止片が保持孔123に引掛係止されるとともに、被引掛片121が受け片122bの後面側に重複され引掛部122に引掛係止される。要するに、バー支持部材120は、バー支持部材取付台130に対してスライド自在に取り付けられる。
【0041】
分岐用取付台114の下部の前面には、先端部が下方に向かって突出する逆L字状の遮断器保持片124(図14参照)が8個形成されている。ここに、遮断器保持片124の左端面には薄肉の補強片124aが連続一体に形成されている。なお、分岐用取付台114の下部と分岐回路遮断器32の後面との間には長手方向を左右方向として分岐用取付台114の前面側に取着した鉄板116が介在しているので、この鉄板116によって分岐回路遮断器32からの熱を放熱できるとともに、分岐用取付台114の強度を高めることができる。鉄板116には、遮断器保持片124が挿通される挿通孔116bを形成してある。分岐用取付台114の前面の中央部および上部にはそれぞれ分岐回路遮断器32の側面に当接する支持片119,129が一体に突設されている。したがって、分岐用取付台114の前面側には分岐回路遮断器32を8個まで取着することができる。分岐回路遮断器32は実施形態1と同じ形状であり、電源側にはスリット状の端子部37a〜37cが設けられる。端子部37aには中性極の導電バー110aが挿入され、端子部37b,37cには電圧極の導電バー110b,110cの端子挿入片111b,111cが挿入される。ただし、各分岐回路遮断器32はそれぞれ各導電バー110a,110b,110cのうちの2本にのみ電気的に接続され、他の1本はダミーとして扱われる。
【0042】
ところで、分岐回路遮断器32の前面であって隔壁101よりの端部には2個の結束用突部39(図14参照)が突設されている。
【0043】
しかして、分岐回路遮断器32を分岐用取付台114に取り付けるに際しては、端子部37aに導電バー110aを挿入し、端子部37b,37cには端子挿入片111b,111cを挿入せずに分岐回路遮断器32を端子挿入片111b,111cの幅方向にずらしている状態から、分岐回路遮断器32の保持溝57に遮断器保持片124が挿入されるとともに端子挿入片111b,111cが端子部37a,37bに挿入されるように分岐回路遮断器32をスライドさせることで取り付けられる。また、分岐回路遮断器32の前面には結束部材127が取り付けられる。結束部材127は8個の分岐回路遮断器32の幅寸法よりもやや長い寸法を有し、導電バー110aの挿通孔(図示せず)に圧入される圧入突起(図示せず)を備え、圧入突起が挿通孔に圧入されることによって結束部材127が導電バー110aに固定される。結束部材127には各分岐回路遮断器32の前面に重なる部位まで延長された結束片127aが形成され、結束片127aの先端部に設けた切欠溝127bが分岐回路遮断器32の前面に突設された結束用突起39に係合することによって、分岐回路遮断器32が結束片127aに連結されるようにしてある。
【0044】
上述のようにしてバー支持部材120に取り付けられた導電バー110a〜110cは主幹回路遮断器31の負荷側端子(出力端子)84,84,84に接続される。
【0045】
主幹回路遮断器31は、図15ないし図17に示すように、直方体状に形成された合成樹脂製の器体8を有し、器体8の上端部には端子台80が形成されており、端子台80にはそれぞれ端子ねじ付きの端子よりなる3つの電源側端子(入力端子)83,83,83が左右方向に並設されている。端子台80は、隣り合う電源側端子83,83間を絶縁する絶縁壁85が形成されている。また、器体8の上端部の右端部から上方へ端子取付部90が連続一体に突出しており、端子取付部90の右側面から負荷側端子84,84,84が突出する形で配置されている。要するに、主幹回路遮断器31の器体8には、3つの電源側端子83,83,83と3つの負荷側端子84,84,84とが露設されている。ここにおいて、電源側端子83,83,83と負荷側端子84,84,84とは1対1で対応付けされており、電源側端子83,83,83にはそれぞれ電線導体(図示せず)が接続され、負荷側端子84,84,84にはそれぞれ導電バー110a,110b,110cが端子ねじ86,86,86を用いて接続される。
【0046】
また、主幹回路遮断器31の器体8内には、器体8の幅方向(図1における左右方向)に並設された3つの接点96(図16および図17参照)と、トリップ機構105と、接点96が介挿された電路に異常電流が流れたときに接点96を強制的に開極させるようにトリップ機構105を作動させる引外し装置106とが収納されており、3極の接点96を器体8の前面に露設した単一のハンドル31aによって開閉操作可能としてある。
【0047】
主幹回路遮断器31の接点96は、電源側端子83の端子板81の下端縁から延設されたL字状の接点保持片93の先端部に固着された固定接点91と、導電性金属により短冊状に形成された可動接触子95の長手方向の一端部に固着され固定接点91に離接する可動接点92とで構成される。各可動接触子95は、それぞれ被覆電線よりなる接続線97を介して負荷側端子84に接続されている。したがって、主幹回路遮断器31は、電源側端子83と負荷側端子84との間に、電源側端子83−固定接点91−可動接点92−接続線97−負荷側端子84の経路の電路が3路形成されている。ここにおいて、接続線97は、器体8の下面および右側面に沿って器体8内に形成されたL字状の収納部107内で引き回してある。
【0048】
主幹回路遮断器31は、器体8の前面側に突出した矩形枠状のボス部31bに器体8内の接点96を開閉するためのハンドル31aが配設されている。ここに、ハンドル31aはボス部31bに開口した操作孔99の内側に配設されているが、このハンドル31aは、一端部25が器体8に枢着され、他端部が接点96の閉成された状態(図16の状態)においてボス部31に開口した操作孔99の開口面から突出しない位置と、接点96の開成された状態(図17の状態)においてボス部31に開口した操作孔99の開口面から突出する位置との間で回動自在となっている。言い換えると、接点96の閉成した状態では、ハンドル31aとボス部31bの前面とが略同一平面上に揃うようになっている。また、ボディ10にカバー20を取り付けた状態では、図12に示すように、ボス部31bの前面とカバー20の前面における窓孔21の周縁とが同一平面上に位置する。したがって、主幹回路遮断器31のハンドル31aは、接点96の閉成状態においてカバー20の前面へ突出しない位置と、接点96の開成状態において窓孔21を通してカバー20の前面へ突出する位置との間で回動自在となる。
【0049】
ここに、主幹回路遮断器31では、図16に示すようにハンドル31aを倒して操作孔99の開口面と略面一にした状態ではトリップ機構105がセットされ接点96が閉成状態(閉極状態)に保たれており、閉成状態からハンドル31aを図17のように回動させて操作孔99から突出させると、可動接点92が固定接点91から離れて開極する。すなわち、ハンドル31aの他端部を起こすことによって開成状態(開極状態)になる。また、上述の開成状態において、引き外し装置106を通して異常電流が流れるとトリップ機構105によって接点96が開極する。
【0050】
主幹回路遮断器31における各負荷側端子84,84,84は、電源側端子83,83,83とハンドル31aとの配列方向が上下方向となるように主幹用取付台112に配設したときに導電バー110a,110b,110cの長手方向に直交する右側面から突出されているので、負荷側端子84,84,84と導電バー110a,110b,110cとを直接接続することにより、主幹回路遮断器31のハンドル31aの操作方向を導電バー110a,110b,110cに接続される分岐回路遮断器32のハンドル32bの操作方向と揃えることができ、箱体1内に配設した状態での見栄えを良くすることができる。なお、本実施形態における主幹回路遮断器31の負荷側端子84,84,84は実施形態1における負荷側端子84,84,84の機能と送りバー38b,38b,38bの機能とを併せ持っている。
【0051】
また、各負荷側端子84,84,84は、正面視において電源側端子83,83,83の並設方向(左右方向)に直交する方向(上下方向)に並設されており、中央の負荷側端子84が端子ねじ86を用いて中性極の導電バー110aに電気的および機械的に接続され、上下の負荷側端子84,84がそれぞれ端子ねじ86,86を用いて電圧極の導電バー110c,110bに電気的および機械的に接続されている。ここに負荷側端子84,84,84の上下方向および前後方向の位置関係は導電バー110a,110b,110cの上下方向および前後方向の位置関係に対応するように設定されている。
【0052】
ところで、本実施形態における分岐回路遮断器32は実施形態1と同様に、接点30の閉成した状態では、ハンドル32aとボス部32bの前端縁とが略同一平面上に揃うようになっており、ボディ10にカバー20を取り付けた状態では、図4に示すように、ボス部32bの前端縁とカバー20前面における窓孔22の周縁とが同一平面上に位置し、ハンドル32aは、接点30の閉成状態においてカバー20の前面へ突出しない位置と、接点30の開成状態において窓孔21を通してカバー20前面へ突出する位置との間で回動自在となる。
【0053】
しかして、本実施形態では、分岐回路遮断器32の接点30が閉成状態のときには、ハンドル32aがカバー20の前面に突出しない位置にあるので、分岐回路遮断器32の接点30が閉成状態のときに誤ってハンドル32aが操作される恐れを少なくすることができ、分岐回路遮断器32に接続された負荷に負担がかかるのを防止することができる。しかも、主幹回路遮断器31の接点96が閉成状態のときには、ハンドル31aがカバー20の前面に突出しない位置にあるので、主幹回路遮断器31の接点96が閉成状態のときに誤ってハンドル31aが操作される恐れを少なくすることができ、各分岐回路遮断器32にそれぞれ接続された負荷に負担がかかるのを防止することができる。
【0054】
また、本実施形態では、実施形態1と同様に、カバー20の前面における窓孔22の周縁であって且つ分岐回路遮断器32の並設方向に直交する方向の両側(つまり、窓孔22の上下)に、分岐回路遮断器32に接続される負荷(使用負荷)を区別する表示の設けられたシール24が貼着される。シール24には、分岐回路遮断器32の並設方向において隣り合う2つの分岐回路遮断器を1組として区別する分割線24aが表記され、窓孔22の上側に貼着されたシール24には、隣り合う2つの分岐回路遮断器32の一方に対応して前記表示が設けられ、窓孔22の下側に貼着されたシールには、隣り合う2つの分岐回路遮断器の他方に対応して前記表示が設けられているので、各分岐回路遮断器32の使用負荷を表示する場所を十分に確保することができ、使用負荷の名称などの表示を見やすくすることができるから、分岐回路遮断器32のハンドル32aが誤って操作される恐れをさらに少なくすることができる。
【0055】
【発明の効果】
請求項1の発明は、一面開口したボディと、器体の前面側に突出したボス部に前記器体内の接点を開閉するためのハンドルが配設され前記ボディに納装された主幹回路遮断器および複数の分岐回路遮断器と、ボディの開口側に結合され前記主幹回路遮断器および前記分岐回路遮断器のボス部に対応した窓孔を有したカバーとを備え、前記分岐回路遮断器のハンドルが前記接点の閉成状態において前記ボス部の前端縁と同一平面上に揃い且つカバーの前面側へ突出しない位置にあるので、前記分岐回路遮断器の接点が閉成状態のときに誤ってハンドルが操作される恐れを少なくすることができ、分岐回路遮断器に接続された負荷に負担がかかるのを防止することができるという効果がある。
【0056】
請求項2の発明は、一面開口したボディと、器体の前面側に突出したボス部に前記器体内の接点を開閉するためのハンドルが配設され前記ボディに納装された主幹回路遮断器および複数の分岐回路遮断器と、ボディの開口側に結合され前記主幹回路遮断器および前記分岐回路遮断器のボス部に対応した窓孔を有したカバーとを備え、前記分岐回路遮断器のハンドルは、一端部が前記器体に枢着され、他端部が前記接点の閉成された状態において前記ボス部の前端縁と同一平面上に揃い且つカバーの前面側へ突出しない位置と、前記接点の開成された状態において上記窓孔を通してカバーの前面側へ突出する位置との間で回動自在であるので、前記分岐回路遮断器の接点が閉成状態のときに誤ってハンドルが操作される恐れを少なくすることができ、分岐回路遮断器に接続された負荷に負担がかかるのを防止することができるという効果がある。
【0057】
請求項3の発明は、請求項1または請求項2の発明において、前記主幹回路遮断器のハンドルが前記接点の閉成状態において前記ボス部の前面と同一平面上に揃い且つ前記カバーの前面側へ突出しない位置にあるので、前記主幹回路遮断器の接点が閉成状態のときに誤ってハンドルが操作される恐れを少なくすることができ、各分岐回路遮断器にそれぞれ接続された負荷に負担がかかるのを防止することができるという効果がある。
【0058】
請求項4の発明は、請求項1または請求項2の発明において、前記主幹回路遮断器のハンドルは、一端部が前記器体に枢着され、他端部が前記接点の閉成された状態において前記ボス部の前面と同一平面上に揃い且つ前記カバーの前面側へ突出しない位置と、前記接点の開成された状態において前記窓孔を通して前記カバーの前面側へ突出する位置との間で回動自在であるので、前記主幹回路遮断器の接点が閉成状態のときに誤ってハンドルが操作される恐れを少なくすることができ、各分岐回路遮断器にそれぞれ接続された負荷に負担がかかるのを防止することができるという効果がある。
【0059】
請求項5の発明は、請求項1ないし請求項4の発明において、前記分岐回路遮断器が横並びに偶数個並設され、前記カバーの前面における前記窓孔の周縁であって且つ前記分岐回路遮断器の並設方向に直交する方向の両側に、前記分岐回路遮断器の使用負荷を区別する表示の設けられたシールが貼着され、前記シールには、前記並設方向において隣り合う2つの分岐回路遮断器を1組として区別する分割線が表記され、前記並設方向に直交する方向の一側に貼着されたシールには、前記隣り合う2つの分岐回路遮断器の一方に対応して前記表示が設けられ、前記並設方向に直交する方向の他側に貼着されたシールには、前記隣り合う2つの分岐回路遮断器の他方に対応して前記表示が設けられているので、各分岐回路遮断器の使用負荷を表示する場所を十分に確保することができ、使用負荷の名称などの表示を見やすくすることができるから、分岐回路遮断器のハンドルが誤って操作される恐れをさらに少なくすることができるという効果がある。
【0060】
請求項6の発明は、請求項5の発明において、前記シールは、前記並設方向において前記隣り合う2つの分岐回路遮断器の一方を前記表示に対応するものとして区別するように線で表示されたマークを設けてあるので、前記表示が隣り合う2つの分岐回路遮断器のどちらに対応しているのか容易に判別することができるという効果がある。
【図面の簡単な説明】
【図1】本発明の実施形態1の外観を示す斜視図である。
【図2】同上の外観を示す正面図である。
【図3】同上の外観を示す分解斜視図である。
【図4】同上の断面図である。
【図5】同上のカバーを取り外した状態の正面図である。
【図6】同上の要部分解斜視図である。
【図7】同上に用いる分岐開閉遮断器の器体の一部を取り外した状態の側面図である。
【図8】同上に用いる分岐開閉遮断器の器体の一部を取り外した状態の側面図である。
【図9】本発明の実施形態2の外観を示す斜視図である。
【図10】同上の外観を示す正面図である。
【図11】同上の外観を示す分解斜視図である。
【図12】同上の断面図である。
【図13】同上のカバーを取り外した状態の正面図である。
【図14】同上の要部断面図である。
【図15】同上に用いる主幹回路遮断器の斜視図である。
【図16】同上に用いる主幹回路遮断器の断面図である。
【図17】同上に用いる主幹回路遮断器の断面図である。
【図18】従来例の外観を示す斜視図である。
【符号の説明】
10 ボディ
20 カバー
22 窓孔
31 主幹回路遮断器
31a ハンドル
31b ボス部
32 分岐回路遮断器
32a ハンドル
32b ボス部
33 自立回路遮断器
33a ハンドル
24 シール
24a 分割線
24b マーク
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a residential distribution board for general homes that can operate each handle of a main circuit breaker and a branch circuit breaker without removing a cover.
[0002]
[Prior art]
As this type of distribution board, one disclosed in JP-A-9-215128 is known. In the distribution board described in this publication, as shown in FIG. 18, a main circuit breaker (main breaker) and a plurality of branch circuit breakers (branch breakers) are housed in a body 10 ′ opened to the front, A cover 20 ′ provided with window holes 21 ′ and 22 ′ exposing the handles 31a ′ and 32a ′, which are the operation portions of the main circuit breaker and the branch circuit breaker, is attached to the front surface of “. Here, each of the handles 31a ′ and 32a ′ protrudes from the front surface of the cover 20 ′ when the contact point opened and closed by the operation of the handles 31a ′ and 32a ′ is in either the open state or the closed state. . The body 10 'and the cover 20' constitute a box 1 '.
[0003]
[Problems to be solved by the invention]
By the way, in the distribution board described in the above publication, the handle 32a 'of the branch circuit breaker protrudes from the front surface of the cover 20' even when the contact is closed, and a plurality of branch circuit breakers are arranged in parallel. Therefore, the handle 32a ′ of the branch circuit breaker may be erroneously operated. If the handle 32a ′ is erroneously operated in the contact closed state, a heavy load is applied to the load being used, and in the worst case, the load may be broken.
[0004]
The present invention has been made in view of the above-described reasons, and an object of the present invention is to provide a residential distribution board that reduces the risk of erroneous operation of the handle of the branch circuit breaker.
[0005]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided a main circuit breaker in which a body that is open on one side and a handle for opening and closing a contact in the body are provided on a boss projecting to the front side of the body, and is mounted on the body. And a plurality of branch circuit breakers, and a cover coupled to the opening side of the body and having a window hole corresponding to a boss portion of the main circuit breaker and the branch circuit breaker, the handle of the branch circuit breaker Is in the closed state of the contact Are aligned on the same plane as the front edge of the boss and It is characterized in that it is in a position that does not protrude to the front side of the bar, and it is possible to reduce the possibility that the handle is accidentally operated when the contact of the branch circuit breaker is in a closed state. It is possible to prevent a load from being applied to the load connected to the circuit breaker.
[0006]
The invention according to claim 2 is a trunk circuit breaker in which a body opened on one surface and a handle for opening and closing a contact in the body are provided on a boss projecting to the front side of the body, and the main circuit breaker is mounted on the body. And a plurality of branch circuit breakers, and a cover coupled to the opening side of the body and having a window hole corresponding to a boss portion of the main circuit breaker and the branch circuit breaker, the handle of the branch circuit breaker One end is pivotally attached to the body and the other end is closed with the contact closed. Are aligned on the same plane as the front edge of the boss and It is possible to rotate between a position that does not protrude to the front side of the bar and a position that protrudes to the front side of the cover through the window hole when the contact is opened. It is possible to reduce the possibility that the handle is erroneously operated when the contact of the circuit breaker is in the closed state, and it is possible to prevent a load from being applied to the load connected to the branch circuit breaker.
[0007]
The invention of claim 3 is the invention of claim 1 or 2, wherein the handle of the main circuit breaker is in a closed state of the contact. In front of the front of the boss Since it is in a position that does not protrude to the front side of the cover, it can reduce the risk of accidental operation of the handle when the contact of the main circuit breaker is closed, and it is connected to each branch circuit breaker. It is possible to prevent a burden from being applied to the loaded load.
[0008]
According to a fourth aspect of the present invention, in the first or second aspect of the present invention, the handle of the main circuit breaker has one end pivotally attached to the body and the other end closed with the contact. smell In front of the front of the boss The contact of the main circuit breaker can be rotated between a position that does not protrude to the front side of the cover and a position that protrudes to the front side of the cover through the window hole when the contact is opened. It is possible to reduce a possibility that the handle is erroneously operated when the switch is in a closed state, and it is possible to prevent a load from being connected to each branch circuit breaker.
[0009]
According to a fifth aspect of the present invention, in the first to fourth aspects of the present invention, the branch circuit breakers are arranged side by side and in an even number, and are arranged at the periphery of the window hole on the front surface of the cover and the branch circuit breaker. A seal provided with an indication for distinguishing the use load of the branch circuit breaker is affixed to both sides in a direction orthogonal to the juxtaposed direction, and the two adjacent branches in the juxtaposed direction are attached to the seal. The dividing line that distinguishes the circuit breakers as one set is described, and the seal attached to one side of the direction orthogonal to the parallel direction corresponds to one of the two adjacent branch circuit breakers. Since the display is provided and the display attached to the other side of the direction orthogonal to the juxtaposed direction corresponds to the other of the two adjacent branch circuit breakers, Displays the operating load of each branch circuit breaker That place can be sufficiently secured, because it is possible to easily view the display, such as the name of the usage load, it is possible to further reduce the risk of branch circuit breaker handle is operated incorrectly.
[0010]
According to a sixth aspect of the invention, in the fifth aspect of the invention, the seal is displayed with a line so as to distinguish one of the two adjacent branch circuit breakers in the juxtaposed direction as corresponding to the display. Since the mark is provided, it is possible to easily determine which of the two branch circuit breakers adjacent to the display corresponds to.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
(Embodiment 1)
In this embodiment, as shown in FIG. 3, the residential distribution board includes one main circuit breaker 31, a plurality of branch circuit breakers 32, and a free-standing circuit breaker 33 described later in the box 1. In the distribution board, a plurality of branch circuit breakers 32 are provided and arranged side by side in two rows. The box 1 is a synthetic resin molded product, and includes a rectangular frame-shaped body 10 and a cover 20 coupled to the front side of the body 10 (the right-downward side in FIG. 3).
[0012]
As shown in FIGS. 3 to 5, the body 10 is formed in a shape in which a peripheral wall 12 protrudes forward over the entire outer periphery of the bottom plate 11 formed in a rectangular frame shape (that is, the body 10 A front window is opened), and an opening window 13 having a rectangular shape is formed at the center of the bottom plate 11. The bottom plate 11 is provided with two left and right support bases 14a and 14b. Guide walls 15a and 15b which are L-shaped in cross section and arranged so as to form corners of a rectangular region are formed around both support bases 14a and 14b. The upper support base 14a is formed with a retaining boss 16 adjacent to the lower side and having a protruding dimension from the bottom plate 11 slightly larger than that of the support base 14a. A receiving piece 17 of about the lower half is formed continuously and integrally on the front end surface of the guide wall 15b provided around the lower support base 14b. Here, the distance from the bottom plate 11 to the receiving piece 17 is set to be slightly larger than the distance from the bottom plate 11 to the tip surface of the support base 14b.
[0013]
The peripheral edge of the opening window 13 in the bottom plate 11 forms a reinforcing protrusion 18 protruding forward over the entire circumference, and the peripheral portion of the opening window 13 is reinforced by the reinforcing protrusion 18. That is, the rigidity can be maintained by the reinforcing protrusion 18 while the opening window 13 having a relatively large area is formed. Further, through holes 19 for fixing upper and lower ends of a bridging member 131 described later are formed at equal pitches in the left-right direction at the upper and lower portions of the opening window 13 in the reinforcing protrusion 18.
[0014]
As shown in FIG. 5, the bridging member 131 is formed such that the vertical dimension is larger than the vertical dimension of the opening window 13 in the bottom plate 11. Both ends of the bridging member 131 along the vertical direction (longitudinal direction) are mounted on the reinforcing protrusion 18 and are attached to the body 10 using mounting screws 132 (see FIG. 5) that are screwed into the through holes 19. Fixed to. Here, a support base 130 that protrudes forward from both end portions and supports one end portion (left end portion in FIG. 5) of a later-described gantry 40 is integrally provided at an intermediate portion in the longitudinal direction of the bridging member 131. Fixing holes 135 and 135 (see FIG. 3) for fixing the gantry 40 are provided on the front surfaces of both end portions in the longitudinal direction of the support table 130. Around the fixed holes 135, 135, guide walls 136a, 136b having an L-shaped cross section arranged so as to form corners of a rectangular region together with the right guide walls 15a, 15b of the bottom plate 11 are formed. On the front surface of the upper end portion of the support base 130, a retaining boss 133 protrudes in the vicinity below the fixing hole 135. In addition, a receiving piece 138 (see FIG. 5) about the lower half is continuously formed integrally on the front end surface of the guide wall 136b provided around the lower fixing hole 135.
[0015]
The cover 20 has a rear end outer peripheral surface substantially coincident with a front end outer peripheral surface of the peripheral wall 12 of the body 10. As shown in FIGS. 1 to 3, the cover 20 is provided with handles 31 a, 32 a, and 33 a that are operation units of the main circuit breaker 31, the branch circuit breaker 32, and the self-standing circuit breaker 33 housed in the body 10. It has window holes 21, 22, and 23 for exposing the provided boss portions 31b, 32b, and 33b. In the present embodiment, the branch circuit breakers 32 are arranged side by side in six rows in two rows in the upper and lower rows, and the window holes 22 of the cover 20 collectively boss portions 32b of the six branch circuit breakers 32. It is formed to be exposed. That is, the cover 20 is formed with two upper and lower window holes 22 corresponding to a plurality of branch circuit breakers 32 arranged side by side in two rows. Here, in the branch circuit breaker 32, the boss portion 32b is formed in a rectangular frame shape, and as shown in FIG. 4, the front end edge of the boss portion 32b and the periphery of the window hole 22 on the front surface of the cover 20 are substantially flush with each other. It arrange | positions in the body 10 so that it may align.
[0016]
Between the right support bases 14a and 14b formed on the body 10 and the support base 130 projecting on the bridging member 131 bridged between the reinforcing protrusions 18 on the upper and lower edges of the opening window 13 of the body 10. Is provided with a gantry 40 for mounting internal devices such as the main circuit breaker 31 and the branch circuit breaker 32.
[0017]
The gantry 40 has a rectangular planar shape as a whole, and two support pieces 41b, 41b on the right side in FIG. 5 among the support pieces 41a, 41a, 41b, 41b provided at the four corners are respectively the bottom plate 11 of the body 10. 5 is placed on the support bases 130a and 14b projecting from the left side, and the two left support pieces 41a and 41a in FIG. The right end is fixed to the body 10 using mounting screws 42 that are screwed into the support bases 14a and 14b, and the left end is supported using mounting screws 42 that are screwed into the fixing holes 135 of the left support base 130. Fixed to the base 130.
[0018]
Here, in each support piece 41, 41b, a groove portion narrower than the diameter of the mounting screw 42 is continuous with a part of the upper edge of the large-diameter portion having a round hole shape larger than the diameter of the head of the mounting screw 42. A mounting hole 43 formed in a keyhole shape is formed. Therefore, in a state where the mounting screw 42 is loosely screwed into the fixing holes 135 and 135 of the support bases 14 a and 14 b and the support base 130, the large diameter portion of the mounting hole 43 is passed through the head of the mounting screw 42, and By mounting the mounting screw 42 after the head is slid to the portion corresponding to the groove, the mounting operation of the gantry 40 to the body 10 can be easily performed. As described above, the guide walls 15a and 15b are formed around the support bases 14a and 14b, and the guide walls 136a and 136b are formed around the fixing hole 135 of the support base 130. Positioning can be facilitated by adjusting the mounting position to the guide walls 15a, 15b, 136a, and 136b, and furthermore, the receiving pieces 17 and 138 are formed on the lower guide walls 15b and 136b. By overlapping a part of the support pieces 41b and 41a on the rear surface side of the receiving pieces 17 and 138, the receiving pieces 17 and 138 can receive the load of the gantry 40 even if the mounting screw 42 is removed. Further, in a state where the mounting screw 42 is inserted into the groove portion of the mounting hole 43, the positions of the retaining bosses 16, 133 are set so that the retaining bosses 16, 133 are inserted into the large diameter portion of the mounting hole 43. After the screw 42 is tightened, the support pieces 41 b and 41 a are prevented from rotating with respect to the body 10. Further, when the retaining bosses 16 and 133 are inserted into the large-diameter portion of the mounting hole 43, rattling of the support pieces 41b and 41a is prohibited even if the mounting screw 42 is somewhat loosened. For example, even if the mounting screw 42 is somewhat loose over time due to external vibration such as an earthquake, the gantry 40 can be prevented from moving or dropping with respect to the body 10.
[0019]
As shown in FIGS. 5 and 6, the main mounting plate 50 as a member for mounting the main circuit breaker 31 among the members constituting the gantry 40 is larger than the upper and lower width dimensions of the opening window 13 formed in the body 10. It is formed of sheet metal (iron plate) in a vertically long rectangular shape with a small vertical dimension. A pair of upper and lower support pieces 41 a protrude from the left edge along the longitudinal direction of the main mounting plate 50, and a pair of upper and lower connection pieces 51 protrude from the right edge. The connecting piece 51 has a U-shaped cross section, and is formed with a keyhole-like connecting hole 52 similar to the mounting hole 43 of the support piece 41a. In addition, as a member for attaching the branch circuit breaker 32 in the gantry 40, a pair of upper and lower frames 45a and 45b as shown in FIGS. 4 and 5 and an attachment plate 46 provided between the frames 45a and 45b are provided. One end portion (right end portion) in the longitudinal direction of both frames 45a and 45b is the above-described support pieces 41b and 41b. Further, a connecting screw hole (not shown) into which the connecting screw 47 is screwed is formed at the other end portion (left end portion) in the longitudinal direction of both the frames 45 a and 45 b, and the connecting screw 47 is connected through the connecting hole 52. The main mounting plate 50 and both the frames 45a and 45b are connected by being screwed into the screw holes.
[0020]
Two connecting holes 55 are formed on the left side of the main mounting plate 50. In the present embodiment, a self-supporting power supply system that obtains power from the power supply side of the main circuit breaker 31 is provided so that power to the fire alarm can be secured even when the main circuit breaker 31 is cut off. In addition, in addition to the branch circuit breaker 32, the self-sustained circuit breaker 33 as an internal unit is inserted into the self-supporting power supply system. The self-supporting circuit breaker 33 has the same configuration as the branch circuit breaker 32, and three slit-like terminal portions 34a to 34c into which conductive bars (described later) are inserted and connected are provided on the power supply side. In the self-standing circuit breaker 33, the central terminal portion 34b is not provided with a member for connecting the conductive bar, and only the terminal portions 34a and 34c are effectively used. Further, a mounting groove 35 is formed on one end face in the longitudinal direction of the body of the self-standing circuit breaker 33.
[0021]
The self-supporting circuit breaker 33 is attached to an auxiliary mounting plate 60 connected to the main mounting plate 50. The auxiliary mounting plate 60 is formed in a rectangular shape, and two connecting pieces 62 are extended on the right edge via a stepped portion 61. A connecting hole 63 is formed in each connecting piece 62, and when the connecting screw 64 is screwed into the connecting hole 55 provided in the main mounting plate 50 through the connecting hole 63, the auxiliary mounting plate 60 is connected to the main mounting plate 50. be able to.
[0022]
The auxiliary mounting plate 60 has a lateral width substantially equal to the lateral width of the self-supporting circuit breaker 33. When the self-supporting circuit breaker 33 is placed on the front surface side of the auxiliary mounting plate 60, the auxiliary mounting plate 60 is provided on both left and right sides of the self-supporting circuit breaker 33. Supporting pieces 67 that come into contact with each other are provided integrally on both left and right edges. Further, an attachment locking piece 65 to be inserted into the attachment groove 35 of the self-supporting circuit breaker 33 is integrally provided at one end edge (lower end edge) of the auxiliary attachment plate 60 in the longitudinal direction. A fixing hole 66 for attaching the relay terminal block 70 is formed at the other end (upper end) in the longitudinal direction of the auxiliary mounting plate 60.
[0023]
In the relay terminal block 70, three bar terminals 71a to 71c inserted and connected to the terminal portions 34a to 34c of the self-supporting circuit breaker 33 project from the base 72 of the synthetic resin molded product, and each bar terminal 71a. To the terminal 73 with terminal screws electrically connected to 71c. Here, the bar terminals 71a and 71b are electrically connected. Therefore, the terminal 73 has two terminals, and each terminal 73 is connected to each terminal of one voltage pole and neutral pole on the power supply side of the main circuit breaker 31 via the connecting wire 74 (see FIG. 5). Connected. That is, the relay terminal block 70 is converted from the shape of the electric circuit called the connecting wire 74 connected to the main circuit breaker 31 to the shape of the electric circuit called bar terminals 71a to 71c corresponding to the terminal portions 34a to 34c of the self-standing circuit breaker 33. It has the function to do. Further, a through hole 75 corresponding to the fixing hole 66 of the auxiliary mounting plate 60 is formed in the base 72, and a fixing screw 76 inserted through the through hole 75 is screwed into the fixing hole 66, whereby the relay terminal block 70. Can be fixed to the auxiliary mounting plate 60.
[0024]
Thus, after the self-supporting circuit breaker 33 is disposed between the left and right support pieces 67 in such a manner that the mounting locking piece 65 provided on the auxiliary mounting plate 60 is inserted into the mounting groove 35 provided on the self-supporting circuit breaker 33, the terminal When the relay terminal block 70 is fixed to the auxiliary mounting plate 60 with the fixing screw 76 in a state where the bar terminals 71a to 71c are inserted and connected to the portions 34a to 34c, the self-supporting circuit breaker 33 is separated by the auxiliary mounting plate 60 and the relay terminal block 70. It can be held and fixed to the auxiliary mounting plate 60. Since only the terminal portions 34a and 34c are electrically connected to the bar terminals 71a and 71c in the self-supporting circuit breaker 33, a voltage between one voltage electrode and the neutral electrode is applied to the self-supporting circuit breaker 33. The
[0025]
By the way, as shown in FIG.4 and FIG.5, in addition to the mount 40 with which the main circuit breaker 31 and the several branch circuit breaker 32 were arrange | positioned at the body 10, the wooden board mounting base to which the wooden board 141 was attached 140 is also stored. Here, the wooden board mounting base 140 is detachably attached to the bridging member 131 using hooking protrusions 142 and 142 projecting from the right side surface. On the left side surface of the bridging member 131, a rectangular narrow part narrower than the hooking protrusion 142 is continuous with a part of the lower edge of the rectangular wide part having a larger width in the front-rear direction than the hooking protrusion 142. An L-shaped hooking hole 137 is formed. Therefore, the wooden board mounting base 140 inserts the hooking protrusion 142 from the wide part of the hooking hole 137, moves the wooden board mounting base 140 downward, and overlaps the hooking protrusion 142 with the opening peripheral edge of the narrow part of the hooking hole 137. Attached to the bridging member 131.
[0026]
In addition, the wood board mounting base 140 has two mounting pieces 143 and 143 projecting from the left side surface and placed on support bases 44 a and 44 b (see FIG. 3) projecting from the bottom plate 11 of the body 10, and mounting screws 145. (See FIG. 5) and is fixed to the body 10. Here, each of the mounting pieces 143 and 143 is formed with mounting grooves 144 and 144 (see FIG. 3) in which the lower side is opened and the mounting screws 145 and 145 are inserted.
[0027]
By the way, the branch circuit breaker 32 has a configuration as shown in FIGS. 7 and 8, and three slit-like terminals to which the conductive bars 110a to 110c (see FIGS. 4 and 5) are connected on the power source side. Parts 37a to 37c are provided. In the branch circuit breaker 32, the central terminal portion 37b is not provided with a member for connecting a conductive bar, and only the terminal portions 37a and 37c are effectively used, and the neutral bar conductive bar 110a is used as the terminal portion 37a. Is connected, and either one of the voltage electrode conductive bars 110b and 110c is connected to the terminal portion 37c. In short, in the branch circuit breaker 32, the terminal portions 37a to 37c are connected to the conductive bars 110a to 110c disposed in the horizontal direction on the gantry 40, and the upper row of branch circuit breakers in the upper and lower rows. 32 is arranged so that the terminal portions 37a to 37c are located at the lower end, and the branch circuit breaker 32 in the lower row is arranged so that the terminal portions 37a to 37c are located at the upper end.
[0028]
Note that a connecting piece 111 (see FIG. 4) projects forward from one side edge of the two conductive bars 110b and 110c of the voltage electrode in the short direction (vertical direction in FIG. 4). Two terminal insertion pieces 111b and 111c extend from the connection piece 111, and one terminal insertion piece 111c extends in a direction orthogonal to the connection piece 111 so as to face the conductive bars 110b and 110c from the connection piece 111. The other terminal insertion piece 111b is extended in a direction orthogonal to the connection piece 111 so as to be separated from the conductive bars 110b and 110c. Further, the distance from the conductive bars 110b and 110c to the terminal insertion piece 111b is larger than the distance to the terminal insertion piece 111c. Therefore, the terminal insertion pieces 111b and 111c are positioned forward and backward. Furthermore, the terminal insertion pieces 111b and 111c provided on the other conductive bars 110b and 110c are positioned forward and backward, and the positions of both terminal insertion pieces 111b and 111c are aligned vertically and horizontally. With such an arrangement, the two terminal insertion pieces 111b and 111c arranged in the front and rear are connected to the other conductive bars 110b and 110c. Here, the edge in the short-side direction of the conductive bar 110a of the neutral electrode also coincides with the tip edge of the both terminal insertion pieces 111b and 111c. Connection pieces 111 provided on different conductive bars 110 b and 110 c are insulated by the partition wall 101. Note that one terminal insertion piece 111b of the conductive bars 110b and 110c is inserted into the terminal portion 37b, and the other terminal insertion piece 111c of the conductive bars 110b and 110c is inserted into the terminal portion 37c.
[0029]
As shown in FIG. 5, the conductive bars 110 a to 110 c are electrically connected to a load side terminal (hereinafter referred to as a load side terminal) 84 of the main circuit breaker 31 via a connection member 38. The connection member 38 holds a feed bar 38b made of a conductive plate serving as an electric circuit by a resin molded product holding body 38a, and the conductive bars 110a to 110c are electrically connected to the main circuit breaker 31 via the feed bar 38b. Connected to. The feed bar 38b and the conductive bars 110a to 110c are connected using a fixing screw 117 so as not to come off.
[0030]
In addition, the branch circuit breaker 32 is provided with a handle 32a for opening and closing the contact 30 in the container body in a rectangular frame-shaped boss portion 32b protruding to the front side of the container body. One end portion 26 is pivotally attached to the body, and the other end portion is not projected from the opening surface of the boss portion 32b when the contact 30 is closed (the state shown in FIG. 7), and the contact 30 is opened ( In the state of FIG. 8, it is freely rotatable between a position protruding from the opening surface of the boss portion 32 b. Here, the boss portion 32b is formed in a rectangular frame shape, and the handle 32a does not protrude from the opening surface of the boss portion 32b when the contact 30 is closed. In other words, when the contact 30 is closed, the handle 32a and the front edge of the boss portion 32b are aligned on substantially the same plane. In the state where the cover 20 is attached to the body 10, as shown in FIG. 4, the front end edge of the boss portion 32b and the peripheral edge of the window hole 22 on the front surface of the cover 20 are located on the same plane. Therefore, the handle 32a is rotatable between a position that does not protrude to the front surface of the cover 20 when the contact 30 is closed and a position that protrudes to the front surface of the cover 20 when the contact 30 is open. Here, a gap is formed between the handle 32a and the inner edge of one end side (lower side in FIG. 7) in the longitudinal direction of the boss portion 32b in the closed state of the contact 30, so that the window hole 22 of the cover 20 is formed. The handle 32a can be operated through.
[0031]
The contact 30 of the branch circuit breaker 32 is provided on a fixed contact 27a provided on a terminal plate 27 accommodated in the body and a movable contact 28 which is elastically deformed in response to an opening / closing operation of the handle 32a. It is comprised with the movable contact 28a which contacts / separates. Here, the body of the branch circuit breaker 32 includes a lock spring 29 for holding an electric wire (not shown) inserted into the body through the wire insertion port 36 and the terminal plate 27, and a trip mechanism section. 48 etc. are also stored. The terminal constituted by the terminal plate 27 and the locking spring 29 described above can be used to prevent the electric wire from being disconnected and connected by the locking spring 29 simply by inserting the electric wire into the container through the electric wire insertion port 36. Therefore, it is called a quick connection terminal.
[0032]
Thus, in this embodiment, when the contact 30 of the branch circuit breaker 32 is in the closed state, the handle 32a is in a position that does not protrude from the front surface of the cover 20, so that the contact 30 of the branch circuit breaker 32 is in the closed state. At this time, it is possible to reduce the possibility that the handle 32a is erroneously operated, and it is possible to prevent the load connected to the branch circuit breaker 32 from being burdened.
[0033]
Further, in the present embodiment, the branch circuit is interrupted on both sides in the direction perpendicular to the parallel arrangement direction of the branch circuit breakers 32 (that is, the upper and lower sides of the window hole 22) on the front surface of the cover 20. A seal 24 provided with a display for distinguishing the load (usage load) connected to the container 32 is attached. On the seal 24, a dividing line 24a (see FIG. 2) for distinguishing two branch circuit breakers adjacent in the direction in which the branch circuit breakers 32 are juxtaposed is described as one set, and is attached to the upper side of the window hole 22. The seal 24 is provided with the indication corresponding to one of the two adjacent branch circuit breakers 32, and the seal adhered to the lower side of the window hole 22 has two adjacent branch circuit breakers. Since the display is provided corresponding to the other of the two, a sufficient place for displaying the usage load of each branch circuit breaker 32 can be secured, and the display of the name of the usage load can be easily seen. Therefore, the possibility that the handle 32a of the branch circuit breaker 32 is erroneously operated can be further reduced.
[0034]
In addition, the seal 24 is provided with a mark 24b indicated by a line so as to distinguish one of the two branch circuit breakers 32 adjacent in the juxtaposed direction of the branch circuit breakers 32 as corresponding to the display. Therefore, it can be easily determined which of the two branch circuit breakers 32 adjacent to the display corresponds to.
[0035]
In this embodiment, twelve branch circuit breakers 32 are divided into two rows and six branch circuit breakers 32 are arranged in parallel for each row. For example, it is necessary to provide a wooden board mounting base 140. When the number of branch circuit breakers 32 is increased without increasing the width, the horizontal width of the gantry 40 is increased, and the support pieces 41a and 41a at the left end of the gantry 40 are replaced with the left pedestals 14a and 14b of the body 10. And may be fixed to the body 10 using the mounting screw 42. In addition, the above-described through holes 19 are formed at equal pitches in the left-right direction at intervals corresponding to the width dimension of the branch circuit breaker 32 in the direction in which the branch circuit breakers 32 are arranged side by side. If not, the number of branch circuit breakers 32 arranged in parallel in each row can be increased or decreased.
[0036]
(Embodiment 2)
The residential distribution board according to the present embodiment is a distribution board in which one main circuit breaker 31 and a plurality of branch circuit breakers 32 are arranged in the box 1 as shown in FIG. A plurality (eight in this embodiment) of branch circuit breakers 32 are arranged side by side. The box 1 includes a body 10 that is open on the front surface and a cover 20 that is coupled to the front side of the body 10.
[0037]
As shown in FIGS. 11 to 13, the body 10 is formed in a shape in which a peripheral wall 12 protrudes forward over the entire outer peripheral edge of the bottom plate 11 whose outer peripheral shape is formed in a rectangular shape. The bottom plate 11 includes a main mounting base 112 on which the main circuit breaker 31 is placed on the front side, a bar supporting member mounting base 113 on which a bar supporting member 120 that is a synthetic resin molded product is placed on the front side, A branch mounting base 114 to which the branch circuit breaker 32 is attached is formed continuously and integrally on the front side. The branch mounting base 114 is adjacent to the lower side of the bar support member mounting base 113 so that the protruding dimension from the bottom plate 11 is set to be slightly larger than the bar support member mounting base 113, and the upper end edge of the branch mounting base 114 has a step difference. It is connected to the lower edge of the bar support member mounting base 113 through the portion 118. Further, the bottom plate 11 has an electric wire insertion hole 115 a opened above the trunk mounting base 112, an electric wire insertion hole 115 b opened above the bar support member mounting base 113, and an electric wire insertion hole below the branch mounting base 1114. 115c is opened. In addition, you may form each electric wire insertion hole 115a-115c by forming the knockout part which can be excised beforehand in the baseplate 11, and excising suitably.
[0038]
The bar support member 120 is configured to hold three conductive bars 110a to 110c including a neutral pole conductive bar 110a and two voltage pole conductive bars 110b and 110c. That is, the bar support member 120 includes a left and right partition wall 101 (projecting forward in the vertical center of the rectangular mounting piece 126 to which the two conductive bars 11b and 110c of the voltage electrode are attached to be overlapped on the front surface. 14), support posts 125 (see FIG. 11) projecting forward are formed at both ends of the partition wall 101 in the left-right direction, and the conductive bar 110a of the neutral electrode is formed by two support posts 125. It is built between.
[0039]
A connecting piece 111 (see FIG. 14) projects forward from one side edge of the two conductive bars 110b and 110c of the voltage electrode in the short direction (vertical direction in FIG. 14). Two terminal insertion pieces 111b and 111c are extended from the connection piece 111. Here, the terminal insertion pieces 111b and 111c are positioned such that the terminal insertion pieces 111c and 111b provided on the other conductive bars 110b and 110c are front and rear, and the positions of both terminal insertion pieces 111b and 111c are aligned left and right. Has been extended to do.
With such an arrangement, the two terminal insertion pieces 111b and 111c arranged in the front and rear are connected to the other conductive bars 110b and 110c. Here, the position in the up-down direction of one end edge (the lower end edge in FIG. 14) in the short direction of the conductive bar 110a of the neutral electrode coincides with the front end edge of the both terminal insertion pieces 111b, 111c. Connection pieces 111 provided on different conductive bars 110 b and 110 c are insulated by the partition wall 101. The branch circuit breaker 32 is the same as that described in the first embodiment, and one of the terminal insertion pieces 111b of the conductive bars 110b and 110c is inserted into the terminal portion 37b of the branch circuit breaker 32. The other terminal insertion piece 111c of the conductive bars 110b and 110c is inserted into the terminal portion 37c. In short, the branch circuit breaker 32 includes terminal portions 37a to 37c which are power supply side terminals provided at one end of the body of the conductive bars 110a, 110b and 110c arranged along the left and right direction in the bar support member 120. The electric wire connected and connected to the quick connection terminal which is the load side terminal provided at the other end of the vessel may be inserted through the electric wire insertion hole 115c.
[0040]
By the way, on the rear surface of the right end portion of the bar support member 120, two L-shaped locking pieces (not shown) whose front end portion protrudes outward from the right end edge of the mounting piece 126 are projected. A rectangular hooked piece 121 projects from the upper and lower surfaces of the left end portion of the member 120. Each locking piece is inserted into a holding hole 123 provided in the bar support member mounting base 113, and the locking piece is hooked and locked into the holding hole 123. Further, the hooked piece 121 is hooked and locked by a pair of hooking portions 122 that are continuously and integrally projected from the bottom plate 11 in the vicinity of the left end portion of the bar support member mounting base 113. The hook portion 122 includes a guide wall 122a having an L-shaped cross section and a receiving piece 122b that is continuously and integrally formed on the front end surface of the guide wall 122a. Accordingly, after the locking piece is inserted into the holding hole 123 of the bar support member mounting base 113 from the front, the bar support member 120 is slid rightward along the front surface of the bar support member mounting base 113 to thereby lock the locking support 123. The piece is hooked and locked in the holding hole 123, and the hooked piece 121 is overlapped on the rear surface side of the receiving piece 122b and hooked and locked to the hook portion 122. In short, the bar support member 120 is slidably attached to the bar support member mounting base 130.
[0041]
Eight inverted L-shaped circuit breaker holding pieces 124 (see FIG. 14) are formed on the front surface of the lower part of the branch mounting base 114 so that the tip portion protrudes downward. Here, a thin reinforcing piece 124a is continuously and integrally formed on the left end surface of the circuit breaker holding piece 124. In addition, since the iron plate 116 attached to the front side of the branch mounting base 114 is interposed between the lower part of the branch mounting base 114 and the rear surface of the branch circuit breaker 32, the longitudinal direction is left and right. The heat from the branch circuit breaker 32 can be radiated by the iron plate 116, and the strength of the branch mount 114 can be increased. The iron plate 116 is formed with an insertion hole 116b through which the circuit breaker holding piece 124 is inserted. Supporting pieces 119 and 129 that are in contact with the side surfaces of the branch circuit breaker 32 are integrally projected at the center and upper part of the front surface of the branch mounting base 114. Therefore, up to eight branch circuit breakers 32 can be attached to the front side of the branch mount 114. The branch circuit breaker 32 has the same shape as that of the first embodiment, and slit-shaped terminal portions 37a to 37c are provided on the power supply side. The neutral electrode conductive bar 110a is inserted into the terminal portion 37a, and the terminal insertion pieces 111b and 111c of the voltage electrode conductive bars 110b and 110c are inserted into the terminal portions 37b and 37c. However, each branch circuit breaker 32 is electrically connected to only two of the conductive bars 110a, 110b, 110c, respectively, and the other one is treated as a dummy.
[0042]
Incidentally, two bundling projections 39 (see FIG. 14) are projected from the front surface of the branch circuit breaker 32 and at the end from the partition wall 101.
[0043]
Thus, when the branch circuit breaker 32 is attached to the branch mounting base 114, the conductive bar 110a is inserted into the terminal portion 37a, and the terminal insertion pieces 111b and 111c are not inserted into the terminal portions 37b and 37c. From the state in which the circuit breaker 32 is shifted in the width direction of the terminal insertion pieces 111b and 111c, the circuit breaker holding piece 124 is inserted into the holding groove 57 of the branch circuit breaker 32 and the terminal insertion pieces 111b and 111c are connected to the terminal portion 37a. , 37b to be inserted by sliding the branch circuit breaker 32. A bundling member 127 is attached to the front surface of the branch circuit breaker 32. The binding member 127 is slightly longer than the width of the eight branch circuit breakers 32, and includes a press-fitting protrusion (not shown) that is press-fitted into an insertion hole (not shown) of the conductive bar 110a. By binding the protrusion into the insertion hole, the binding member 127 is fixed to the conductive bar 110a. The bundling member 127 is formed with a bundling piece 127 a that extends to a portion that overlaps the front surface of each branch circuit breaker 32, and a notch groove 127 b provided at the front end of the bundling piece 127 a projects from the front surface of the branch circuit breaker 32. The branch circuit breaker 32 is connected to the binding piece 127a by engaging with the binding protrusion 39 thus formed.
[0044]
The conductive bars 110a to 110c attached to the bar support member 120 as described above are connected to the load side terminals (output terminals) 84, 84, 84 of the main circuit breaker 31.
[0045]
As shown in FIGS. 15 to 17, the main circuit breaker 31 has a synthetic resin container 8 formed in a rectangular parallelepiped shape, and a terminal block 80 is formed at the upper end of the container 8. The terminal block 80 is provided with three power supply side terminals (input terminals) 83, 83, 83 each having a terminal screw. The terminal block 80 is formed with an insulating wall 85 that insulates between the adjacent power supply side terminals 83 and 83. Further, the terminal mounting portion 90 protrudes continuously and upward from the right end portion of the upper end portion of the vessel body 8, and the load side terminals 84, 84, 84 protrude from the right side surface of the terminal mounting portion 90. Yes. In short, the power source side terminals 83, 83, 83 and the three load side terminals 84, 84, 84 are exposed on the main body 8 of the main circuit breaker 31. Here, the power supply side terminals 83, 83, 83 and the load side terminals 84, 84, 84 are associated one-to-one, and the power supply side terminals 83, 83, 83 are respectively wire conductors (not shown). And conductive bars 110a, 110b, 110c are connected to the load side terminals 84, 84, 84 using terminal screws 86, 86, 86, respectively.
[0046]
Further, in the main body 8 of the main circuit breaker 31, three contact points 96 (see FIGS. 16 and 17) arranged in parallel in the width direction of the main body 8 (left and right direction in FIG. 1), and a trip mechanism 105 are provided. And a tripping device 106 for operating the trip mechanism 105 so that the contact 96 is forcibly opened when an abnormal current flows through the electrical path in which the contact 96 is inserted. 96 can be opened and closed by a single handle 31a exposed on the front surface of the vessel 8.
[0047]
The contact 96 of the main circuit breaker 31 is composed of a fixed contact 91 fixed to the tip of an L-shaped contact holding piece 93 extending from the lower end edge of the terminal plate 81 of the power supply side terminal 83, and a conductive metal. The movable contact 95 is fixed to one end portion in the longitudinal direction of the movable contact 95 formed in a strip shape, and is configured by a movable contact 92 that is separated from the fixed contact 91. Each movable contact 95 is connected to the load-side terminal 84 via a connection line 97 made of a covered electric wire. Therefore, the main circuit breaker 31 has three electric paths between the power supply side terminal 83 and the load side terminal 84 in the path of the power supply side terminal 83 -the fixed contact 91 -the movable contact 92 -the connection line 97 -the load side terminal 84. A road is formed. Here, the connecting line 97 is routed in an L-shaped storage portion 107 formed in the container body 8 along the lower surface and the right side surface of the container body 8.
[0048]
In the main circuit breaker 31, a handle 31 a for opening and closing the contact 96 in the container body 8 is disposed on a rectangular frame-shaped boss portion 31 b protruding to the front side of the container body 8. Here, the handle 31a is disposed inside the operation hole 99 opened in the boss portion 31b. The handle 31a has one end 25 pivotally attached to the body 8 and the other end closed by the contact 96. The position where the operation hole 99 opened in the boss portion 31 does not protrude in the formed state (the state shown in FIG. 16), and the operation opened in the boss portion 31 in the state where the contact 96 is opened (the state shown in FIG. 17). It can freely rotate between positions projecting from the opening surface of the hole 99. In other words, when the contact 96 is closed, the handle 31a and the front surface of the boss portion 31b are aligned on substantially the same plane. Further, in the state where the cover 20 is attached to the body 10, as shown in FIG. 12, the front surface of the boss portion 31 b and the peripheral edge of the window hole 21 on the front surface of the cover 20 are located on the same plane. Therefore, the handle 31a of the main circuit breaker 31 is between the position where it does not protrude to the front surface of the cover 20 when the contact 96 is closed and the position where it protrudes to the front surface of the cover 20 through the window hole 21 when the contact 96 is open. Can be freely rotated.
[0049]
Here, in the main circuit breaker 31, the trip mechanism 105 is set and the contact 96 is in a closed state (closed contact) when the handle 31 a is tilted to be substantially flush with the opening surface of the operation hole 99 as shown in FIG. When the handle 31a is rotated as shown in FIG. 17 and protruded from the operation hole 99 from the closed state, the movable contact 92 opens away from the fixed contact 91. That is, the opened state (opened state) is established by raising the other end of the handle 31a. Further, when an abnormal current flows through the tripping device 106 in the opened state described above, the contact 96 is opened by the trip mechanism 105.
[0050]
When the load side terminals 84, 84, 84 in the main circuit breaker 31 are arranged on the main mount 112 so that the arrangement direction of the power side terminals 83, 83, 83 and the handle 31a is in the vertical direction. Since it protrudes from the right side surface orthogonal to the longitudinal direction of the conductive bars 110a, 110b, 110c, the main circuit breaker is connected by directly connecting the load side terminals 84, 84, 84 to the conductive bars 110a, 110b, 110c. The operation direction of the handle 31a of 31 can be aligned with the operation direction of the handle 32b of the branch circuit breaker 32 connected to the conductive bars 110a, 110b, 110c, and the appearance in the state of being arranged in the box 1 is good. can do. The load side terminals 84, 84, 84 of the main circuit breaker 31 in the present embodiment have both the functions of the load side terminals 84, 84, 84 in the first embodiment and the functions of the feed bars 38b, 38b, 38b. .
[0051]
Further, the load side terminals 84, 84, 84 are arranged side by side in a direction (vertical direction) orthogonal to the direction in which the power supply side terminals 83, 83, 83 are arranged in parallel (left and right direction) when viewed from the front. The side terminals 84 are electrically and mechanically connected to the neutral pole conductive bar 110a using the terminal screws 86, and the upper and lower load side terminals 84 and 84 are connected to the voltage pole conductive bars using the terminal screws 86 and 86, respectively. 110c and 110b are electrically and mechanically connected. Here, the positional relationship in the vertical direction and the front-rear direction of the load side terminals 84, 84, 84 is set to correspond to the positional relationship in the vertical direction and the front-rear direction of the conductive bars 110a, 110b, 110c.
[0052]
By the way, the branch circuit breaker 32 in this embodiment is configured so that the handle 32a and the front end edge of the boss portion 32b are aligned on substantially the same plane when the contact 30 is closed, as in the first embodiment. In the state where the cover 20 is attached to the body 10, as shown in FIG. 4, the front end edge of the boss portion 32 b and the peripheral edge of the window hole 22 on the front surface of the cover 20 are located on the same plane. In a closed state, and a position that protrudes to the front surface of the cover 20 through the window hole 21 when the contact 30 is open.
[0053]
Thus, in this embodiment, when the contact 30 of the branch circuit breaker 32 is in the closed state, the handle 32a is in a position that does not protrude from the front surface of the cover 20, so that the contact 30 of the branch circuit breaker 32 is in the closed state. At this time, it is possible to reduce the possibility that the handle 32a is erroneously operated, and it is possible to prevent the load connected to the branch circuit breaker 32 from being burdened. In addition, when the contact 96 of the main circuit breaker 31 is in the closed state, the handle 31a is in a position where it does not protrude from the front surface of the cover 20, so that when the contact 96 of the main circuit breaker 31 is in the closed state, the handle is mistaken. The possibility of operating 31a can be reduced, and a load applied to each branch circuit breaker 32 can be prevented from being burdened.
[0054]
Further, in this embodiment, as in the first embodiment, both sides of the periphery of the window hole 22 on the front surface of the cover 20 and in the direction orthogonal to the parallel arrangement direction of the branch circuit breakers 32 (that is, the window hole 22 A seal 24 provided with a display for distinguishing the load (use load) connected to the branch circuit breaker 32 is attached to the upper and lower sides. In the seal 24, a dividing line 24 a that distinguishes two branch circuit breakers adjacent in the juxtaposed direction of the branch circuit breakers 32 as one set is described, and the seal 24 attached to the upper side of the window hole 22 The display is provided corresponding to one of the two adjacent branch circuit breakers 32, and the seal adhered to the lower side of the window hole 22 corresponds to the other of the two adjacent branch circuit breakers. Since the display is provided, it is possible to secure a sufficient place for displaying the usage load of each branch circuit breaker 32 and to make the display of the name of the usage load easy to see. The possibility that the handle 32a of the device 32 is erroneously operated can be further reduced.
[0055]
【The invention's effect】
According to the first aspect of the present invention, there is provided a main circuit breaker in which a body that is open on one side and a handle for opening and closing a contact in the body are provided on a boss projecting to the front side of the body, and is mounted on the body. And a plurality of branch circuit breakers, and a cover coupled to the opening side of the body and having a window hole corresponding to a boss portion of the main circuit breaker and the branch circuit breaker, the handle of the branch circuit breaker Is in the closed state of the contact Are aligned on the same plane as the front edge of the boss and Since it is in a position that does not protrude to the front side of the bar, it is possible to reduce the possibility that the handle is accidentally operated when the contact of the branch circuit breaker is closed, and the load connected to the branch circuit breaker There is an effect that it is possible to prevent a burden from being applied.
[0056]
The invention according to claim 2 is a trunk circuit breaker in which a body opened on one surface and a handle for opening and closing a contact in the body are provided on a boss projecting to the front side of the body, and the main circuit breaker is mounted on the body. And a plurality of branch circuit breakers, and a cover coupled to the opening side of the body and having a window hole corresponding to a boss portion of the main circuit breaker and the branch circuit breaker, the handle of the branch circuit breaker One end is pivotally attached to the body and the other end is closed with the contact closed. Are aligned on the same plane as the front edge of the boss and The contact of the branch circuit breaker is closed because it is freely rotatable between a position that does not protrude to the front side of the bar and a position that protrudes to the front side of the cover through the window hole when the contact is opened. There is an effect that it is possible to reduce the possibility that the handle is erroneously operated in the established state and to prevent the load connected to the branch circuit breaker from being burdened.
[0057]
The invention of claim 3 is the invention of claim 1 or 2, wherein the handle of the main circuit breaker is in a closed state of the contact. In front of the front of the boss Since it is in a position that does not protrude to the front side of the cover, it can reduce the risk of accidental operation of the handle when the contact of the main circuit breaker is closed, and it is connected to each branch circuit breaker. There is an effect that it is possible to prevent a burden on the applied load.
[0058]
According to a fourth aspect of the present invention, in the first or second aspect of the present invention, the handle of the main circuit breaker has one end pivotally attached to the body and the other end closed with the contact. smell In front of the front of the boss The contact of the main circuit breaker can be rotated between a position that does not protrude to the front side of the cover and a position that protrudes to the front side of the cover through the window hole when the contact is opened. There is an effect that it is possible to reduce the possibility that the handle is erroneously operated when the switch is in the closed state, and it is possible to prevent the load connected to each branch circuit breaker from being burdened.
[0059]
According to a fifth aspect of the present invention, in the first to fourth aspects of the present invention, the branch circuit breakers are arranged side by side and in an even number, and are arranged at the periphery of the window hole on the front surface of the cover and the branch circuit breaker. A seal provided with an indication for distinguishing the use load of the branch circuit breaker is affixed to both sides in a direction orthogonal to the juxtaposed direction, and the two adjacent branches in the juxtaposed direction are attached to the seal. The dividing line that distinguishes the circuit breakers as one set is described, and the seal attached to one side of the direction orthogonal to the parallel direction corresponds to one of the two adjacent branch circuit breakers. Since the display is provided and the display attached to the other side of the direction orthogonal to the juxtaposed direction corresponds to the other of the two adjacent branch circuit breakers, Displays the operating load of each branch circuit breaker Can be secured sufficiently, and the display of the name of the load used, etc. can be easily seen, which can further reduce the possibility that the handle of the branch circuit breaker will be erroneously operated. .
[0060]
According to a sixth aspect of the invention, in the fifth aspect of the invention, the seal is displayed with a line so as to distinguish one of the two adjacent branch circuit breakers in the juxtaposed direction as corresponding to the display. Since this mark is provided, there is an effect that it is possible to easily determine which of the two branch circuit breakers adjacent to the display corresponds to.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an external appearance of a first embodiment of the present invention.
FIG. 2 is a front view showing the appearance of the above.
FIG. 3 is an exploded perspective view showing the external appearance of the above.
FIG. 4 is a cross-sectional view of the above.
FIG. 5 is a front view with the cover removed.
FIG. 6 is an exploded perspective view of the main part of the above.
FIG. 7 is a side view showing a state where a part of the body of the branch switchgear used in the above is removed.
FIG. 8 is a side view showing a state where a part of the body of the branch switchgear used in the above is removed.
FIG. 9 is a perspective view showing an appearance of a second embodiment of the present invention.
FIG. 10 is a front view showing the appearance of the above.
FIG. 11 is an exploded perspective view showing the external appearance of the above.
FIG. 12 is a cross-sectional view of the above.
FIG. 13 is a front view showing a state in which the cover is removed.
FIG. 14 is a cross-sectional view of a main part of the above.
FIG. 15 is a perspective view of a main circuit breaker used in the above.
FIG. 16 is a sectional view of a main circuit breaker used in the above.
FIG. 17 is a sectional view of a main circuit breaker used in the above.
FIG. 18 is a perspective view showing the appearance of a conventional example.
[Explanation of symbols]
10 body
20 Cover
22 Window hole
31 Main circuit breaker
31a Handle
31b Boss
32 Branch circuit breaker
32a handle
32b Boss
33 Independent circuit breaker
33a Handle
24 Seal
24a dividing line
24b mark

Claims (6)

一面開口したボディと、器体の前面側に突出したボス部に前記器体内の接点を開閉するためのハンドルが配設され前記ボディに納装された主幹回路遮断器および複数の分岐回路遮断器と、ボディの開口側に結合され前記主幹回路遮断器および前記分岐回路遮断器のボス部に対応した窓孔を有したカバーとを備え、前記分岐回路遮断器のハンドルが前記接点の閉成状態において前記ボス部の前端縁と同一平面上に揃い且つカバーの前面側へ突出しない位置にあることを特徴とする住宅用分電盤。A main circuit breaker and a plurality of branch circuit breakers mounted on the body, wherein a body opened on one surface and a handle for opening and closing a contact in the container are provided on a boss projecting to the front side of the container And a cover coupled to the opening side of the body and having a window hole corresponding to the boss portion of the main circuit breaker and the branch circuit breaker, and the handle of the branch circuit breaker is in a closed state of the contact residential distribution board, characterized in that odor Te in a position that does not protrude to the front side of and cover set on the front edge flush with the boss. 一面開口したボディと、器体の前面側に突出したボス部に前記器体内の接点を開閉するためのハンドルが配設され前記ボディに納装された主幹回路遮断器および複数の分岐回路遮断器と、ボディの開口側に結合され前記主幹回路遮断器および前記分岐回路遮断器のボス部に対応した窓孔を有したカバーとを備え、前記分岐回路遮断器のハンドルは、一端部が前記器体に枢着され、他端部が前記接点の閉成された状態において前記ボス部の前端縁と同一平面上に揃い且つカバーの前面側へ突出しない位置と、前記接点の開成された状態において上記窓孔を通してカバーの前面側へ突出する位置との間で回動自在であることを特徴とする住宅用分電盤。A main circuit breaker and a plurality of branch circuit breakers mounted on the body, wherein a body opened on one surface and a handle for opening and closing a contact in the container are provided on a boss projecting to the front side of the container And a cover that is coupled to the opening side of the body and has a window hole corresponding to the boss portion of the main circuit breaker and the branch circuit breaker, one end of the handle of the branch circuit breaker being the device It is pivotally secured to the body, the position where the other end does not protrude to the front side of and cover set on the front edge flush with the boss portion Te closed state odor of the contact, which is open in the contact A residential distribution board characterized in that it can rotate between a position protruding through the window hole to the front side of the cover in a state. 前記主幹回路遮断器のハンドルが前記接点の閉成状態において前記ボス部の前面と同一平面上に揃い且つ前記カバーの前面側へ突出しない位置にあることを特徴とする請求項1または請求項2記載の住宅用分電盤。Claim 1 or claim, characterized in that in a position where the trunk circuit breaker handle does not protrude to the front side of and prior Symbol cover aligned on the front surface flush with the boss portion Te closed state odor of the contact Item 3. A distribution board for houses according to Item 2. 前記主幹回路遮断器のハンドルは、一端部が前記器体に枢着され、他端部が前記接点の閉成された状態において前記ボス部の前面と同一平面上に揃い且つ前記カバーの前面側へ突出しない位置と、前記接点の開成された状態において前記窓孔を通して前記カバーの前面側へ突出する位置との間で回動自在であることを特徴とする請求項1または請求項2記載の住宅用分電盤。The trunk circuit breaker handle has one end pivotally connected to the device body, the other end of and prior Symbol cover aligned on the front surface flush with the boss portion Te closed state odor of the contact 3. The apparatus according to claim 1, wherein the position is rotatable between a position that does not protrude toward the front side and a position that protrudes toward the front side of the cover through the window hole when the contact is opened. The residential distribution board described. 前記分岐回路遮断器が横並びに偶数個並設され、前記カバーの前面における前記窓孔の周縁であって且つ前記分岐回路遮断器の並設方向に直交する方向の両側に、前記分岐回路遮断器の使用負荷を区別する表示の設けられたシールが貼着され、前記シールには、前記並設方向において隣り合う2つの分岐回路遮断器を1組として区別する分割線が表記され、前記並設方向に直交する方向の一側に貼着されたシールには、前記隣り合う2つの分岐回路遮断器の一方に対応して前記表示が設けられ、前記並設方向に直交する方向の他側に貼着されたシールには、前記隣り合う2つの分岐回路遮断器の他方に対応して前記表示が設けられてなることを特徴とする請求項1ないし請求項4のいずれかに記載の住宅用分電盤。  An even number of the branch circuit breakers are arranged side by side, and the branch circuit breakers are arranged on both sides of the peripheral edge of the window hole on the front surface of the cover and in a direction orthogonal to the parallel arrangement direction of the branch circuit breakers. A sticker with a display for distinguishing the usage load is pasted, and on the seal, a dividing line for distinguishing two branch circuit breakers adjacent in the juxtaposition direction as one set is written, and the juxtaposition The seal attached to one side of the direction orthogonal to the direction is provided with the display corresponding to one of the two adjacent branch circuit breakers, and on the other side of the direction orthogonal to the juxtaposed direction. The residential seal according to any one of claims 1 to 4, wherein the sticker is provided with the display corresponding to the other of the two adjacent branch circuit breakers. Distribution board. 前記シールは、前記並設方向において前記隣り合う2つの分岐回路遮断器の一方を前記表示に対応するものとして区別するように線で表示されたマークを設けてなることを特徴とする請求項5記載の住宅用分電盤。  6. The seal is provided with a mark displayed by a line so as to distinguish one of the two adjacent branch circuit breakers in the juxtaposed direction as corresponding to the display. The residential distribution board described.
JP2001052668A 2000-02-28 2001-02-27 Residential distribution board Expired - Lifetime JP4604366B2 (en)

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JPH01162702U (en) * 1988-04-28 1989-11-13
JPH0274733U (en) * 1988-11-25 1990-06-07
JPH04101320A (en) * 1990-08-18 1992-04-02 Mitsubishi Electric Corp Remote controlled circuit breaker
JPH04253135A (en) * 1990-12-27 1992-09-08 Fuji Electric Co Ltd Electromagnetic trip device for circuit breaker
JPH06506102A (en) * 1991-12-26 1994-07-07 スクウエアー ディー カンパニー Distribution systems and circuit equipment for distribution systems
JPH06290694A (en) * 1993-03-31 1994-10-18 Matsushita Electric Works Ltd Circuit breaker
JPH09215128A (en) * 1996-01-31 1997-08-15 Matsushita Electric Works Ltd Home distribution board

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01162702U (en) * 1988-04-28 1989-11-13
JPH0274733U (en) * 1988-11-25 1990-06-07
JPH04101320A (en) * 1990-08-18 1992-04-02 Mitsubishi Electric Corp Remote controlled circuit breaker
JPH04253135A (en) * 1990-12-27 1992-09-08 Fuji Electric Co Ltd Electromagnetic trip device for circuit breaker
JPH06506102A (en) * 1991-12-26 1994-07-07 スクウエアー ディー カンパニー Distribution systems and circuit equipment for distribution systems
JPH06290694A (en) * 1993-03-31 1994-10-18 Matsushita Electric Works Ltd Circuit breaker
JPH09215128A (en) * 1996-01-31 1997-08-15 Matsushita Electric Works Ltd Home distribution board

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