JP3838025B2

JP3838025B2 - switch

Info

Publication number: JP3838025B2
Application number: JP2000366417A
Authority: JP
Inventors: 新一中村; 泰三川尻; 博之立石
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 2000-11-30
Filing date: 2000-11-30
Publication date: 2006-10-25
Anticipated expiration: 2020-11-30
Also published as: GB2370418B; SG97223A1; GB0128150D0; SA01220559B1; JP2002170460A; GB2370418A; MY129019A

Description

【０００１】
【発明の属する技術分野】
本発明は、スイッチに関するものである。
【０００２】
【従来の技術】
従来から、スイッチやコンセントのような配線器具あるいは照明器具などにおいて、器体に設けた電線挿入孔を通して器体に導入された電線を接続するために速結端子と称する端子装置が広く用いられている。例えば図４２に示すスイッチでは、器体１に収納され電線挿入孔１２を通して器体１に導入された電線２に接触する端子板３と、端子板３との間で電線２を挟持する鎖錠ばね４とを備えている。鎖錠ばね４は板ばねであって、鎖錠ばね４に設けた接触片４ａおよび鎖錠片４ｂと端子板３との間に電線２を挟持することによって電線２を保持するように形成されている。つまり、器体１に設けた電線挿入孔１２を通して電線２を器体１に導入すると、電線２が接触片４ａおよび鎖錠片４ｂを端子板３から引き離す向きに撓ませ、接触片４ａおよび鎖錠片４ｂに生じるばね力によって電線２が端子板３と鎖錠片４ｂとの間に挟持されるように構成されている。ここに、電線２が端子板３と接触片４ａおよび鎖錠片４ｂとの間に挟持された状態では、接触片４ａおよび鎖錠片４ｂの端縁が電線２に弾接し、電線２の一部に鎖錠片４ｂが食い込むことによって電線２の抜け止めがなされる。
【０００３】
上述のスイッチは、器体１に揺動自在に枢支された形で器体１に装着された反転ハンドル５０の前面側に、反転ハンドル５０の前面を覆う反転ハンドル５０に比べて操作面の面積が大きな操作ハンドル６０が取り付けられる。操作ハンドル６０の後面には反転ハンドル５０に設けた結合爪５３に係合する結合脚６１が突設され、結合脚６１の先端部（後端部）には結合爪５３の後面に係合する脚爪６１ａが形成されており、操作ハンドル６０の後面に突設した押え突起６２と脚爪６１ａとの間で反転ハンドル５０が保持され、結果的に操作ハンドル６０が反転ハンドル５０に固定されている。なお、操作ハンドル６０を反転ハンドル５０に取り付ける際には、図４３に示すように、反転ハンドル５０の左端部が右端部よりも後方（図における下方）に位置する状態で右端部の結合爪５３に操作ハンドル６０の結合脚６１の脚爪６１ａを係合させた後、操作ハンドル６０の中央部を器体１側に押圧して反転ハンドル５０の左端部の結合爪５３に操作ハンドル６０の結合脚６１の脚爪６１ａを係合させている。
【０００４】
ところで、器体１の長手方向の両端部には器体１の前面から突出する当てリブ２５がそれぞれ突設され、各当てリブ２５の外側面には各一対の取付爪２６が突設されており、図４４に示すように配線器具用の取付枠たるプレート枠８０に設けた保持溝８７ａ，８７ｂに係合することによって器体１をプレート枠８０に保持させることができるようになっている。ここに、当てリブ２５は器体１をプレート枠８０に取り付けた時にプレート枠８０に設けた当接部８４ｄ，８５ｄの裏面側に当接することになり、操作ハンドル６０は両当てリブ２５の間に配置され、施工状態において器体１と操作ハンドル６０との間に形成される隙間が外部から見えにくくなっている。
【０００５】
また、図４５に示したスイッチでは、端子装置として、器体１に収納され電線挿入孔１２を通して器体１に導入された電線２に接触する端子板３’と、端子板３’に挿通された端子ねじ５と、端子ねじ５の先端部に螺着された矩形板状のナット６とを備えるものが知られている。この端子装置では、電線挿入孔１２を通して器体１に電線２を挿入し、器体１の側壁に設けられた操作孔７を通してマイナスドライバの先端部で端子ねじ６を締め付けるように回すことにより、ナット６と端子板３’の主片３ａ’との間の距離が小さくなって電線２が挟持されるように構成されている。
【０００６】
【発明が解決しようとする課題】
ところで、図４２に示したスイッチに用いられている端子装置は、芯線が単線である電線を接続することを想定しており、芯線が撚り線である場合には鎖錠片による抜け止めの効果を充分に得ることができないという問題を有している。つまり、図４２に示す端子板３のように電線との接触部位である主片３ａが平板である端子板３を用いると、芯線が撚り線であると端子板３と鎖錠片４ｂとの間に導入したときに撚り線を構成する各線がばらばらに広がるから、鎖錠ばね４と端子板３の主片３ａとの距離が小さくなって鎖錠ばね４による充分な接触圧を得ることができず、電線２が脱落してしまうという問題がある。
【０００７】
また、図４４に示したスイッチに用いられている端子装置は、芯線が単線である電線を１本接続した場合、芯線が撚り線である電線を１本接続した場合、同じ種類の電線で同じ素線径同士の組み合わせで接続した場合には問題ないが、ナット６との間に電線２を挟持する相手側面（つまり、端子板３’の主片３ａにおけるナット６との対向面）は平面状であるから、例えば図４６に示す複数種類の適用電線のなかから異径電線や異種電線を組み合わせて接続した場合に十分な強度で電線を保持することができず、電線が脱落するという問題があった。
【０００８】
なお、上述の図４２に示したスイッチを図４４に示すようなプレート枠８０に取り付ける際に、プレート枠８０に器体１を取り付けた後に操作ハンドル６０を反転ハンドル５０に取り付けるが、プレート枠８０に取着された器体１の反転ハンドル５０に取り付けた操作ハンドル６０の両端部（図４４における左右両端部）とプレート枠８０の当接部８４ｄ，８５ｄとの間の隙間が小さいので、操作ハンドル６０を取り外すことができず、器具の交換ができないという不具合があった。
【０００９】
本発明は、上記事由に鑑みてなされたものであり、その主目的は、異径電線および異種電線を組み合わせて用いる場合でも電線を十分な強度で保持することができる端子装置を備えたスイッチを提供することにある。
【００１０】
【課題を解決するための手段】
請求項１の発明は、可動接点とともに接点装置を構成する固定接点を一体に備える端子装置が器体内に収納されたスイッチであって、端子装置は、器体に取り付けた環状の端子枠と、端子枠の周壁に貫設されたねじ孔に螺合し電線を端子枠との間に接続保持する端子ねじとを備え、端子枠において端子ねじの先端面との間に電線を挟持する部位には端子枠の開口面に沿った断面が端子ねじの先端面から離れる向きへ膨らむように湾曲する保持面が形成されてなることを特徴とするものであり、端子枠において端子ねじの先端面との間に電線を挟持する部位には端子枠の開口面に沿った断面が端子ねじの先端面から離れる向きへ膨らむように湾曲する保持面が形成されているので、芯線が単線である電線、芯線が撚り線である電線などの径や種類によらず、異径電線および異種電線を組み合わせて用いる場合でも電線を十分な強度で保持することができるから、例えば、１つの端子枠に芯線が単線である電線と芯線が撚り線である電線とを同時に接続する場合、１つの端子枠に芯線が単線である電線を２本接続する場合など、多様な接続形態に対応することができる。
【００１１】
また、請求項１の発明では、端子枠は、ねじ孔が貫設されたねじ側端子板と保持面が形成された受け側端子板との２部材をかしめて結合することにより形成され、電線の挿入深さを規制する電線ストッパ片をねじ側端子板に一体に設け、固定接点を保持した接点保持片を受け側端子板から延長した連結片の先端部に設けてあるので、電線の挿入深さはねじ側端子板に一体に設けられた電線ストッパにより規制されるから、例えば電線の挿入長さが長過ぎるような場合に連結片や接点保持片が電線の影響を受けず、固定接点の位置がずれるのを防止することができ、また、ねじ側端子板と受け側端子板との２部材がかしめて結合されているので、端子ねじを締め付けてもねじ側端子板が変形しにくく、端子ねじの締め付けに対して強いから、結果的に電線を強固に保持することができる。
【００１２】
請求項２の発明は、請求項１の発明において、上記ねじ側端子板は、上記ねじ孔の周縁外周部にカウンタシンクが一体に形成されているので、カウンタシンクを設けていない場合に比較すると端子枠と端子ねじとの螺合量を大きくとることができ、端子ねじを強固に締め付けることができるから、結果的に電線を強固に保持することができる。
【００１３】
請求項３の発明は、請求項２の発明において、上記ねじ側端子板においてカウンタシンクの周辺で両側縁から側方へ突出する張出片が設けられ、上記受け側端子板には上記張出片が挿入される位置決め孔を設けてあるので、端子枠の組立時に張出片と位置決め孔とを利用して上記ねじ側端子板を上記受け側端子板に仮固定でき、上記ねじ側端子板と上記受け側端子板との結合作業が容易になり、また、カウンタシンクの強度を高めることができる。
【００１４】
請求項４の発明は、請求項１の発明において、上記端子枠は、上記器体の内面に突設されたリブを挟み込む一対の突出片を上記連結片に設けてあるので、端子ねじを締め付ける際の電線の反力による端子枠のがたつきを防止でき、固定接点の位置がずれるのを防ぐことができるから、安定した接点圧を得ることが可能になる。
【００１５】
請求項５の発明は、請求項１の発明において、上記器体に揺動自在に枢支された形で上記器体に装着され上記接点装置を開閉する反転ハンドルと、反転ハンドルに取り付けた表示灯とを備え、上記端子枠は、上記電線ストッパ片の両側縁に取付突起が突設され、表示灯への通電経路となる金属板よりなる接触子から延設された延設片に設けた係合部へ取付突起が係合することによって接触子とねじ側端子板とが結合され、取付突起には接触子側ほど電線ストッパ片からの突出量を小さくする傾斜面が形成されているので、表示灯への通電経路となる接触子を組立時にねじ側端子板と簡単に結合することができる。
【００１６】
請求項６の発明は、請求項１の発明において、上記器体は箱状であって、前面開口した合成樹脂製のボディと、ボディの前面側に配設されるカバーとからなり、ボディの幅方向における両側面にはボディの長手方向に離間して各一対の組立突起が突設され、カバーの後端縁からは組立舌片が後方に突設され、組立舌片に設けた組立孔に組立突起が係合することによってボディとカバーとが結合され、ボディの長手方向における上記組立突起の幅をボディの両側面で異ならせてあるので、組立時にカバーとボディとを簡単に結合することができ、しかも、カバーとボディとの逆組を防止することができる。
【００１７】
請求項７の発明は、請求項１の発明において、上記器体は箱状であって、前面開口した合成樹脂製のボディと、ボディの前面側に配設されるカバーとからなり、ボディの幅方向における両側面にはボディの長手方向に離間して各一対の組立突起が突設され、カバーの後端縁からは組立舌片が後方に突設され、組立舌片に設けた組立孔に組立突起が係合することによってボディとカバーとが結合され、上記長手方向の両端部において上記ボディと上記カバーとの対向面の一方にリブを設け、他方にリブが嵌る凹部を設け、両端部において上記リブの幅を異ならせてあるので、組立時にカバーとボディとを簡単に結合することができ、しかも、カバーとボディとの逆組を防止することができる。
【００１８】
請求項８の発明は、請求項６の発明において、上記長手方向の両端部において上記ボディと上記カバーとの対向面の一方にリブを設け、他方にリブが嵌る凹部を設け、両端部において上記リブの幅を異ならせてあるので、カバーとボディとの逆組をより確実に防止することができる。
【００１９】
請求項９の発明は、請求項１の発明において、上記器体に揺動自在に枢支された形で上記器体に装着され上記接点装置を開閉する反転ハンドルと、反転ハンドルの前面側に着脱自在に取り付けられる操作ハンドルと、埋込型の配線器具用の取付枠に取り付けるための取付部とを備え、上記取付枠に取着された状態で操作ハンドルを反転ハンドルから外すための切欠部を操作ハンドルの後端縁に設けてあるので、上記器体が上記取付枠に取着され反転ハンドルに操作ハンドルが取り付けられた状態でも切欠部にマイナスドライバなどの先端部を差し込んで操作ハンドルが反転ハンドルから外れる向きの力を作用させることにより操作ハンドルを反転ハンドルから外すことができる。
【００２０】
請求項１０の発明は、請求項９の発明において、操作ハンドルと反転ハンドルとの互いの対向面それぞれに反転ハンドルへの操作ハンドルの取付方向を規定方向のみに規制する逆組み防止リブを突設してあるので、反転ハンドルに対する操作ハンドルの取付方向を規制でき、反転ハンドルに対する操作ハンドルの逆組みを防止することができる。
【００２１】
請求項１１の発明は、請求項９の発明において、操作ハンドルと反転ハンドルとの互いの対向面に操作ハンドルの取付方向を指示するマークを表示してあるので、反転ハンドルへの操作ハンドルの取付方向を容易に確認できる。
【００２２】
請求項１２の発明は、請求項９の発明において、上記器体は、短手方向の外形寸法が、中央部に窓孔を有した矩形枠状に形成され一方向に２ないし３組の器具取付手段を備えた埋込型の配線器具用の取付枠に当該取付枠の器具取付手段の組の数まで連設可能とする寸法に形成され、上記操作ハンドルは、上記窓孔の前面側の開口面を２個で覆う程度の大きさに形成され、上記一方向を左右方向とするときに左右両側に上記反転ハンドルを着脱可能としてあるので、上記一方向に２組の器具取付手段を備えた取付枠と３組の器具取付手段を備えた取付枠とで上記操作ハンドルの共通化を図ることができ、取付枠毎に専用の操作ハンドルを用意する場合に比べて低コスト化を図ることができる。
【００２３】
請求項１３の発明は、請求項９の発明において、上記操作ハンドルの後面には、上記反転ハンドルに形成された鍔片の一部に係止される結合脚が突設され、上記反転ハンドルにおいて鍔片には結合脚を誘導する誘導溝が設けられているので、上記反転ハンドルへの上記操作ハンドルの取付時に結合脚が誘導溝に沿って案内されるから、上記反転ハンドルへの上記操作ハンドルの取付作業が容易になる。
【００２４】
請求項１４の発明は、請求項１２の発明において、上記反転ハンドルに表示灯を備え、操作ハンドルの後面には、表示灯の光を操作ハンドルの表示部へ導光するレンズが配設され、当該レンズは上記左右両側それぞれにおいて表示灯に対応する部位に跨る大きさに形成されているので、上記窓孔の前面側の開口面を２個で覆う程度の大きさに形成された操作ハンドルにおいて上記左右方向の左右両側のいずれに反転ハンドルを取り付けた場合でも表示灯の光を操作ハンドルの表示部へ導光することができる。
【００２５】
請求項１５の発明は、請求項９の発明において、上記取付枠が施工面に埋込配置された埋込ボックスに取り付けるためのボックスねじが挿通される取付孔が形成されたものであって、上記操作ハンドルにおいて上記器体の短手方向の両側壁の後端縁には、上記器体を上記取付枠に取り付けた状態でボックスねじの干渉を防止する凹部よりなる逃げ部が設けられているので、上記器体を上記取付枠に取り付けた状態でボックスねじの干渉を防止する凹部よりなる逃げ部が上記操作ハンドルに設けられていることによって、上記操作ハンドルの操作時にボックスねじが上記操作ハンドルに干渉するのを回避することができる。
【００２６】
【発明の実施の形態】
（実施形態１）
本実施形態のスイッチは、図１ないし図３に示すように、前面が開口した直方体状の合成樹脂成形品のボディ１０と、矩形枠状に形成されボディ１０の前面側に結合される合成樹脂成形品のカバー２０とにより構成される器体１を備える。ボディ１０の幅方向における両外側面にはボディ１０の長手方向に離間して各一対の組立突起１１が突設され、カバー２０の後端縁からは組立舌片２１が後方に延設され、組立舌片２１に設けた組立孔２１ａに組立突起１１が係合することによってボディ１０とカバー２０とが結合される。
【００２７】
ここにおいて、本実施形態では、図４に示すボディ１０の一方の外側面（図６（ｂ）の下面）における組立突起１１の幅をＷ１とし、図５に示すボディ１０の他方の外側面（図６（ｂ）の上面）における組立突起１１の幅をＷ２とするとき、Ｗ１とＷ２とを異ならせてある（つまり、ボディ１０の長手方向における組立突起１１の幅をボディ１０の両外側面で異ならせてある）。これに対して、図４に示すカバー２０の一方の外側面（図６（ａ）の上面）と同一平面上に形成された組立舌片２１における組立孔２１ａの幅Ｗ１’はＷ１よりもやや大きな幅に形成され、図５に示すカバー２０の他方の外側面（図６（ａ）の下面）と同一平面上に形成された組立舌片２１における組立孔２１ａの幅Ｗ２’はＷ２よりもやや大きな幅に形成されているが、Ｗ２，Ｗ１の大小関係と同様に、Ｗ２’とＷ１’とを異ならせてある。しかして、組立時にカバー２０とボディ１０との逆組を防止することができる。
【００２８】
また、図６（ａ）に示すように、カバー２０の長手方向の両端部における後面側には後方に向かって突出するリブ２７がカバー２０の幅方向に沿って形成され、図６（ｂ）に示すように、ボディ１０の長手方向（左右方向）の両端部における前面側には組立時に上記リブ２７が位置決めされる凹部１６が形成されているが、カバー２０の長手方向の一端部（図での左端部）におけるリブ２７の幅をＷ３とし、他端部（図での右端部）におけるリブ２７の幅をＷ４とするとき、Ｗ３とＷ４とを異ならせてあるので、このことからも組立時にカバー２０とボディ１０との逆組を防止することができる。
【００２９】
ボディ１０には、ボディ１０の後壁に設けた電線挿入孔１２を通して器体１に挿入される電線２を接続する２個の端子装置３０ａ，３０ｂと、端子装置３０ａ，３０ｂの間の電路を開閉する接点装置４０とが収納される。一方、カバー２０の中央部の開口窓２２には合成樹脂成形品の反転ハンドル５０がカバー２０に対して揺動自在に枢支された形で装着され、この反転ハンドル５０の揺動に伴って接点装置４０が開閉される。反転ハンドル５０の前面側にはカバー２０の前面に重複する合成樹脂成形品の操作ハンドル６０（図１５参照）が着脱可能に結合され、操作ハンドル６０を操作部として揺動させることにより、反転ハンドル５０が揺動して接点装置４０が開閉されるようにしてある。
【００３０】
ボディ１０の内側面には、端子装置３０ａ，３０ｂおよび接点装置４０を位置決めするための保持溝１４（図３参照）および保持リブ１３がそれぞれ複数形成されている。端子装置３０ａ，３０ｂはボディ１０の長手方向の両端部内に配置され、接点装置４０はボディ１０の長手方向の中央部内に配置される。
【００３１】
端子装置３０ａ，３０ｂは、器体１に取り付けた環状の端子枠１００ａ，１００ｂと、端子枠１００ａ，１００ｂの周壁に貫設されたねじ孔３５に螺合し器体１の後壁に設けた電線挿入孔１２を通して端子枠１００ａ，１００ｂ内に導入された電線を端子枠１００ａ，１００ｂとの間に接続保持する端子ねじ３４とを備えている。すなわち、端子装置３０ａ，３０ｂは、環状の端子枠１００ａ，１００ｂに貫設されたねじ孔３５に端子ねじ３４を螺合させて、端子ねじ３４の先端面４３ａと端子枠１００ａ，１００ｂとの間に電線を挟持することにより、電線を機械的に保持しかつ電気的に接続するものである。
【００３２】
端子枠１００ａ，１００ｂにおいてねじ孔３５の周縁外周部には、カウンタシンク３６をバーリング加工により形成してある。したがって、端子枠１００ａ，１００ｂにおいて、端子ねじ３４が螺合するねじ孔３５にカウンタシンク３６を設けているから、カウンタシンク３６を設けていない場合に比較すると端子枠１００ａ，１００ｂと端子ねじ３４の螺合量を大きくとることができ、端子ねじ３４を強固に締め付けることができる。
【００３３】
端子枠１００ａ，１００ｂにおいて端子ねじ３４の先端面３４ａ（図１および図８参照）との間に電線を挟持する部位には端子枠１００ａ，１１０ｂの開口面に沿った断面が端子ねじ３４の先端面から離れる向きへ膨らむように湾曲する保持面３１ｂ，３２ｂが形成されている。
【００３４】
端子枠１００ａ，１００ｂは、ねじ孔３５が貫設されたねじ側端子板３３，３３と上記保持面３１ｂ，３２ｂが形成された受け側端子板３１，３２との２部材を結合することにより形成されている。ここに、両端子枠１００ａ，１００ｂにおいてねじ側端子板３３は共通化してあるので、コストを低減することができる。
なお、ねじ側端子板３３，３３および受け側端子板３１，３２はそれぞれ板金を曲成することにより形成されている。
【００３５】
ねじ側端子板３３，３３は、図１０に示すように、Ｌ字状に形成されており、ねじ孔３５およびカウンタシンク３６が形成された主片３３ａと、主片３３ａに略直交し電線の挿入深さを規制する電線ストッパ片３３ｂとを有している。すなわち、図７に示すように、電線２の先端が電線ストッパ片３３ｂに当接することで電線２の挿入深さが規制されることになる。
【００３６】
一方、受け側端子板３１は、ボディ１０の長手方向の一端部（図３における左端部）付近で操作溝１５の内周面に設けた保持溝１４に両側部に突設した張出部３３ｃ（図１１参照）が挿入保持される主片３１ａと、ボディ１０の長手方向の中央部に配置され固定接点４１が固着された接点保持片３１ｄと、主片３１ａの前端縁と接点保持片３１ｄの前端縁とを連続一体に連結するようにボディ１０の開口面に沿って延長された連結片３１ｃ，３２ｃとを備える。すなわち、受け側端子板３１には連結片３１ｃから延長されて先端部に固定接点４１を備える接点保持片３１ｄがボディ１０の長手方向の中央部に向かって斜め後向き（図２の下向き）に延設される。
【００３７】
また、受け側端子板３２は、上記保持面３２ｂが形成された断面Ｕ字状の主片３２ａの後端縁からボディ１０の長手方向の中央部に向かってボディ１０の後面に沿う形で支持片３２ｄが延設され、支持片３２ｄの先端部にはへ字状に曲成された支点突起３２ｅが形成されている。支点突起３２ｅにはコ字状の導電板からなる開閉素子４３の中央片４３ａの後面が当接する。
【００３８】
接点装置４０は、コ字状に形成され支点突起３２ｅに中央片４３ａの後面が当接する開閉素子４３を備えている。開閉素子４３は、中央片４３ａの両端縁から側片４３ｂ，４３ｃが延設されており、支点突起３２ｅを中心としてボディ１０の長手方向の中央部内に揺動自在に配置される。ボディ１０の中央部は、ボディ１０の幅方向の両側壁の内面から保持リブ１３，１３が突設されており、リブ１３，１３によってボディ１０の幅方向への開閉素子４３の移動が規制される。開閉素子４３の側片４３ｂの側縁には突起４３ｄが突設されており、この突起４３ｄが保持リブ１３に当接することにより、開閉素子４３の揺動範囲が規制される。
【００３９】
開閉素子４３は、上述の接点保持片３１ｄに対向するように配置され、一方の側片４３ｂには接点保持片１８ｄに設けた固定接点４１に離接する可動接点４２が設けられる。つまり、開閉素子４３が支点突起３２ｅを中心として回動することにより、可動接点４２が固定接点４１に接離し、端子装置３０ａと端子装置３０ｂとを電気的に接続する状態と分離する状態とが選択される。要するに、本実施形態の接点装置４０は、固定接点４１と可動接点４２とを１個ずつ備えた単極単投に用いる単極スイッチ（いわゆる片切スイッチ）の接点を構成している。開閉素子４３と反転ハンドル５０との間にはコイルスプリングからなる反転ばね４４が保持されており、反転ばね４４の一端部は開閉素子４３の中央片４３ａと両側片４３ｂ，４３ｃとで囲まれる空間に収められ、他端部は反転ハンドル５０内に収められる。
【００４０】
器体１の幅方向における反転ハンドル５０の両側面には支点突起５１が突設され、各支点突起５１は前端部が先細りとなる形状に形成されている。カバー２０の長手方向の中央部であって幅方向の両側部には開口窓２２の周縁から前方に突出する一対の軸受突片２３が突設され、両軸受突片２３の対向面には反転ハンドル５０の支点突起５１が挿入される軸受凹所２４が形成される。軸受凹所２４は少なくとも前端部において支点突起５１を揺動可能に枢支する。反転ハンドル５０の長手方向の両端面には操作ハンドル６０を反転ハンドル５０に結合するための結合爪５３がそれぞれ突設される。
【００４１】
なお、カバー２０の長手方向の両端部にはカバー２０の両端部側縁に沿ってカバー２０の前面から突出する当てリブ２５がそれぞれ突設され、各当てリブ２５の外側面には各一対の取付爪２６が突設される。ここでは詳しく説明しないが、取付爪２６は配線器具用の取付枠に設けた取付孔に係合することによって器体１を取付枠に保持させるために設けてあり、壁面などの施工面に器体１の一部を埋め込む形で施工する際に、施工面に固定される取付枠への器体１の結合作業が容易になっている。また、当てリブ２５は器体１を取付枠に取り付けたときに取付枠の裏面側に当接することになる。操作ハンドル６０は両当てリブ２５の間に配置され、操作ハンドル６０は揺動時において当てリブ２５に干渉しないように形成される。このように当てリブ２５をカバー２０に突設し当てリブ２５に取付爪２６を設けたことによって、当てリブ２５を設けない場合に比較すると操作ハンドル６０を後方に位置させることが可能になり、施工状態においてカバー２０と操作ハンドル６０との間に形成される隙間が外部から見えにくくなる。
【００４２】
操作ハンドル６０は、図１５に示すように、反転ハンドル５０の前面を覆い、操作ハンドル６０の後面には反転ハンドル５０に設けた結合爪５３に係合する結合脚６１が突設される。結合脚６１の先端部（後端部）には結合爪５３の後面に係合する脚爪６１ａが形成され、操作ハンドル６０の後面に突設した押さえ突起６２と脚爪６１ａとの間で反転ハンドル５０が保持され、結果的に操作ハンドル６０が反転ハンドル５０に固定されることになる。
【００４３】
しかして、上述したスイッチの動作を簡単に説明すれば、図２のように反転ハンドル５０の右端部が左端部よりも後方（図の下方）に位置する状態では反転ばね４４は中間部が両端部よりも左側に膨らんだ状態になり、反転ばね４４によって可動接点４２が固定接点４１に押圧されて接点圧が付与される。一方、この状態から図示しない操作ハンドル６０の左端部を後方に押すと、反転ばね４４の前端部が右側に移動することにより反転ばね４４は圧縮された後に急速に伸長して中間部が両端部よりも右側に膨らんだ状態になり、このとき開閉素子４３を右側に倒して可動接点４２を固定接点４１から引き離す。
【００４４】
ところで、上述した電線挿入孔１２は、端子枠１１０ａ，１００ｂのねじ側端子板３３，３３と受け側端子板３１，３２との間に対応する部位に形成され、電線挿入孔１２を通して器体１に電線２を挿入した状態で端子ねじ３４を締め付けると、電線２の先端部が端子ねじ３４の先端面３４ａと受け側端子板３１，３２の主片３１ａ，３２ａの保持面３１ｂ，３２ｂとの間に挟持され、電線２が主片３１ａ，３２ａに接触して端子装置３０ａ，３０ｂと電線２とが電気的に接続され、電線２が器体１から抜けないように機械的に保持される。
【００４５】
ボディ１０の長手方向の両側壁には端子枠１００ａ，１００ｂに対応する部位に操作溝１５が形成されている。操作溝１５はマイナスドライバの先端部のような工具が器体１内に挿入可能となる形状を有し、工具を操作溝１５に挿入して端子ねじ３４を締め付けると、端子ねじ３４の先端面３４ａが受け側端子板３１，３２の主片３１ａ，３１ｂの保持面３１ｂ，３２ｂに近づくようにしてある。逆に、端子装置３０ａ，３０ｂに電線２を接続した状態で操作溝１５に工具を挿入して端子ねじ３４を緩めれば、端子ねじ３４の先端面３４ａが電線２から離れるように保持面３１ｂ，３２ｂとの距離が大きくなって電線２の機械的保持が解除され、電線２を器体１から引き抜くことが可能になる。
【００４６】
本実施形態における端子装置３０ａ，３０ｂに結線する電線としては撚り線や単線を用いることができ、多様な接続形態に対応することができる。例えば図８に示すように、単芯線の芯線２ａと撚り線の素線２ｂとを同時に接続することや、例えば図９に示すように、２本の単芯線の芯線２ａを同時に接続することも可能である。ここにおいて、端子ねじ３４の先端面３４ａに対向する受け側端子板３１，３２の保持面３１ｂ，３２ｂが弧状であるから、撚り線の素線２ｂを端子ねじ３４の先端面３４ａと端子板３１との間で素線２ｂが広がらないように挟持することが可能になるのである。
【００４７】
なお、端子枠１００ａ，１００ｂの内周面と端子ねじ３４の側面との間の隙間は撚り線の素線２ｂの直径よりも小さく設定されており、端子ねじ３４の先端面３４ａと保持面３１ｂ，３２ｂとの間に素線２ｂを挟持したときに、素線２ｂが端子枠１００ａ，１００ｂの内周面と端子ねじ３４との間に挟まって端子ねじ３４にからみつくことが防止され、端子ねじ３４を締め付ける際に素線２ｂが断線するのが防止されている。
【００４８】
ところで、ねじ側端子板３３の主片３３ａの両側縁には図１０に示すように各一対の結合突起３３ｄ，３３ｄが電線の挿入方向に離間して形成され、受け側端子板３１，３２の主片３１ａ，３２ａには各結合突起３３ｄ，３３ｄに対応した部位に結合孔３８（図１１および図参照）が貫設されている。また、ねじ側端子板３３の主片３３ａにおいてカウンタシンク３６の周辺で両側縁から側方へ突出する張出片３３ｃが設けられ、受け側端子板３１，３２の主片３１ａ，３２ａには張出片３３ｃが挿入される位置決め孔３７（図１１参照）を設けてある。ねじ側端子３３の主片３３ａにおいて、各一対の結合突起３３ｄ，３３ｄは電線の挿入方向において張出片３３ｃの両側に位置しており、また、張出片３３ｃの突出寸法は結合突起３３ｄの突出寸法よりも長く設定されている。
【００４９】
ここで、端子枠１００ａの組立工程について説明すれば、結合する前のねじ側端子板３３の主片３１ａは図１１（ａ）に示すように、先端側が拡開されており、この開いている状態から図１１（ｂ）に示すようにねじ側端子板３３の張出片３３ｃの一部を受け側端子板３１の主片３１ａの位置決め孔３７に挿入することでねじ側端子板３３を受け側端子板３３に仮固定し（図１２参照）、その後、図１１（ｃ）に示すように、受け側端子板３１の主片３１ａがＵ字状となるように先端側を近づけ（主片３１ａを閉じ）ることにより、張出片３３ｃを位置決め孔３７に挿通させるとともに結合突起３３ｄを結合孔３８に挿通させ、続いて、結合突起３３ｄの先端部をかしめることにより、ねじ側端子板３３と受け側端子板３１とが結合される。なお、端子枠１００ｂについても、ねじ側端子板３３は端子枠１００ａと共通部品であり、受け側端子板３２の主片３２ａの形状は主片３１ａの形状と略同じであるから、端子枠１００ｂについても端子枠１００ａと同様の工程で組み立てることができる。
【００５０】
しかして、端子枠１００ａ，１００ｂの組立時に張出片３７と位置決め孔３８とを利用してねじ側端子板３３を受け側端子板３１，３２に仮固定でき、ねじ側端子板３３と受け側端子板３１，３２との結合作業が容易になる。しかも、ねじ側端子板３３に張出片３７を設けたことにより、カウンタシンク３６の強度を高めることができる。
【００５１】
ところで、本実施形態の端子枠１００ａでは、図７に示すように上述の電線ストッパ片３３ｂをねじ側端子板３３に一体に設け、固定接点４１を保持した接点保持片３１ｄを受け側端子板３１から延長した連結片３１ｃの先端部に設けてある。これに対して、図１３に示すように固定接点４１を保持した接点保持片３１ｄをねじ側端子板３３から延長した連結片３１ｃの先端部に設けることも考えられるが、図１３に示す構成では電線２の挿入長さが長過ぎる場合などに連結片３１ｃが変形して固定接点４１の位置がずれてしまう恐れがある。また、図１４に示すように、ねじ側端子板３３の主片３３ａを受け側端子板３１の主片３１ａで挟持するとともに、主片３３ａから電線ストッパ片３３ｂを延設した構成も考えられるが、図１４に示す構成では電線２の挿入長さが長過ぎるような場合に、端子ねじ３４を締め付けると主片３１ａが同図中に二点鎖線で示すように変形して電線２にトルクがかかりにくいという問題がある。
【００５２】
一方、本実施形態の端子枠１００ａでは、電線２の挿入深さはねじ側端子板３３に一体に設けられた電線ストッパ片３３ｂにより規制されるから、例えば電線の挿入長さが長過ぎるような場合に連結片３１ｃや接点保持片３１ｄが電線２の影響を受けず、固定接点４１の位置がずれるのを防止することができ、また、ねじ側端子板３３と受け側端子板３１との２部材がかしめて結合されているので、端子ねじ３４を締め付けてもねじ側端子板３３が変形しにくく、端子ねじ３４の締め付けに対して強いので、結果的に電線２を強固に保持することができる。
【００５３】
上述したスイッチ装置を壁面のような施工面に取り付けるには、図２５および図２６に示すプレート９を用いる。プレート９は、器体１を保持する取付枠たるプレート枠８０と、プレート枠８０を覆う化粧プレート９０とからなる。
【００５４】
プレート枠８０は合成樹脂製であって絶縁性を有し、上下一対の枠片８３ａ，８３ｂの左端部同士および右端部同士をそれぞれ横片８２で連続一体に結合することによって、操作ハンドル６０の前面を露出させる長方形状の窓孔たる開口窓８１を中央部に備えた矩形枠状に形成されている。開口窓８１の長手方向に沿った両側縁の後面側にはそれぞれ帯板状の固定梁部８４（図１５参照）と可動梁部８５（図１５参照）とが互いに対向する形で設けてある。
【００５５】
固定梁部８４および可動梁部８５において開口窓８１に臨む一面には、器体１の両側面に各一対ずつ突設された取付爪２６と凹凸係合する器具取付手段としての４個の取付孔たる保持溝８７ａ，８７ｂ（図１５参照）が等間隔で設けられる。したがって、取付爪２６を各保持溝８７ａ，８７ｂに凹凸係合させると、操作ハンドル６０の前面を開口窓８１から露出させた形でプレート枠８０に器体１を取着することができる。また、器体１がプレート枠８０から前方に抜け落ちないように、固定梁部８４および可動梁部８５の基部には器体１のカバー２０に突設された当てリブ２５に当接する当接部８４ｄ，８５ｄ（図１５参照）が形成されている。つまり、器体１の当てリブ２５の前面が当接部８４ｄ，８５ｄに当接し、取付爪２６の後面が保持溝８７ａ，８７ｂに係止されることによって、器体１がプレート枠８０に取着される。ここで、固定梁部８４と可動梁部８５との開口窓８１に臨む一面における各先端部分には、器体１の取付爪２６をプレート枠８０の後面側から保持溝８７ａ，８７ｂに導入する際に、各取付爪２６を保持溝８７ａ，８７ｂに誘導するために、先端側ほど互いの距離を広げるように傾斜した傾斜面となった誘導部８７ｃ，８７ｄが設けてある。
【００５６】
しかるに、プレート枠８０にスイッチの器体１を取り付けるには、器体１をプレート枠８０の後方から挿入して器体１の長手方向の一側面に突設した取付爪２６を固定梁部８４の保持溝８７ａに係合させておき、器体１をプレート枠８０に対して前方に押し込むと、器体１の他側面に突設した取付爪２６が可動梁部８５を撓ませ、取付爪２６を保持溝８７ｂに容易に係合させることができる。
【００５７】
一方、固定梁部８４の基部には隣接する各一対の保持溝８７ａの間でプレート枠８０の表裏に貫通する器具外し孔８４ｃが穿設してあり、器体１をプレート枠８０に取着した状態で、ドライバや取外し専用の治具等の先端部分を器具外し孔８４ｃに挿入し、治具の先端部分で器体１を可動梁部８５側へ押すと梃子の原理によってわずかな力で可動梁部５５を撓ませることができ、固定梁部８４側の保持溝８７ａと器体１の取付爪２６との係合状態を解除してプレート枠８０から器体１を取り外すことができるようになっている。
【００５８】
ところで、プレート枠８０は固定梁部８４と可動梁部８５とにそれぞれ２対の保持溝８７ａ，８７ｂを有し、器体１は各側面に一対ずつの取付爪２６を有している。器体１に設けた取付爪２６の間隔は、固定梁部８４と可動梁部８５とにおいて隣接する保持溝８７ａ，８７ｂ間のピッチに一致しており、図１に示した器体１は上述したプレート枠８０に対して２個まで取り付けることが可能になるように寸法が設定されている。つまり、図２５および図２６に示したプレート枠８０は２個用であって、器体１は２個用のプレート枠８０に２個まで取り付けることが可能になっている。そこで、このような寸法の器体１を単位寸法の器体１と呼ぶことにする。
【００５９】
器体１とプレート枠８０との相対的な取付寸法を上述のように規定しておくことによって、プレート枠８０には単位寸法の器体１を１〜２個の範囲の任意個数で取り付けることが可能になる。
【００６０】
器体１を取り付けたプレート枠８０を壁面等に取り付けるために、プレート枠８０の各横片８２には、壁面に埋め込まれた埋込ボックス（図示せず）にプレート枠８０を取り付けるためのボックスねじ１１０を挿通するボックス用孔８８ａを設けた延設片８２ａが延設されている。また、プレート枠８０の枠片８３ａ，８３ｂにはプレート枠８０を壁面等の施工面に直付けするためのねじが挿通されるねじ挿通孔８８ｂとが設けてある。
【００６１】
また、プレート枠８０の４隅には、化粧プレート９０の後面から突設した係止突起（図示せず）を係止する化粧プレート係止孔８９が設けてあり、化粧プレート係止孔８９に係止突起を挿入係止することでプレート枠８０の前面を覆う形で化粧プレート９０を着脱自在に取り付けることができるようになっている。
【００６２】
化粧プレート９０は、絶縁性を有する合成樹脂を用いて形成されたものであって、プレート枠８０の前面を覆う矩形状の前面板９１と、前面板９１の周縁から全周に亙って後方に突出する側壁９２とを連続一体に形成した略箱形に形成される。プレート枠８０に結合するための上述した係止突起は前面板９１の後面側の４隅に突設してある。また、前面板９１の中央部には、プレート枠８０に取り付けた器体１の前面（操作ハンドル６０）を露出させる開口窓９１ａが設けてある。
【００６３】
化粧プレート９０の側壁９２のうちの各対向面間の距離は、それぞれプレート枠５０の対応する部位の幅寸法よりも大きくしてある。すなわち、施工面に配設したプレート枠８０の前面側に化粧プレート９０を取着したとき、プレート枠８０が化粧プレート９０の内側に収まり、化粧プレート９０の側壁９２の後端縁が施工面にほぼ当接する。その結果、プレート枠８０と化粧プレート９０との突き合わせ面が施工面よりも前方へ出ることがなく、両者の突き合わせの線が側面からはほとんど見えなくなり外観が向上する。
【００６４】
ところで、操作ハンドル６０としては、図２４および図２５に示すように開口窓８１の前面側を２つで覆う程度の大きさに形成されたもの（以下、２個用の操作ハンドル６０と称す）や、図２６に示すように開口窓８１の前面側を１つで覆う程度の大きさに形成されたもの（以下、１個用の操作ハンドル６０と称す）を反転ハンドル５０に取り付けることができるようになっている。
【００６５】
ここにおいて、各操作ハンドル６０には、器体１をプレート枠８０に取り付けた状態でボックスねじ１１０の干渉を防止する凹部よりなる逃げ部６６８図２１参照）が設けてある。しかして、操作ハンドル６０の操作時にボックスねじ１１０が操作ハンドル６０に干渉するのを回避することができる。
【００６６】
また、各操作ハンドル６０には、プレート枠８０に取着された状態で操作ハンドル６０を反転ハンドル５０から外すための切欠部６５を操作ハンドル６０の後端縁に設けてある。ここに、切欠部６５は上述の結合脚６１に対応した位置に設けてあり、器体１がプレート枠８０に取着され反転ハンドルに操作ハンドルが取り付けられた状態でも切欠部にマイナスドライバなどの先端部を差し込んで操作ハンドル６０が反転ハンドル５０から外れる向きの力を作用させることにより操作ハンドル６０を反転ハンドル５０から外すことができる。
【００６７】
また、図１８および図２０に示すように、操作ハンドル６０と反転ハンドル５０との互いの対向面それぞれに反転ハンドル５０への操作ハンドル６０の取付方向を規定方向のみに規制する逆組み防止リブ５５，６８を突設してあるので、反転ハンド５０に対する操作ハンドル６０の取付方向を規制でき、反転ハンドル５０に対する操作ハンドル６０の逆組みを防止することができる。さらに、操作ハンドル６０と反転ハンドル５０との互いの対向面に操作ハンドル６０の取付方向を指示するマークたる矢印５７，６７を表示してあるので、反転ハンドル５０への操作ハンドル６０の取付方向を容易に確認することができる（視認することができる）。
【００６８】
なお、反転ハンドル５０において鍔片たる結合爪５３には結合脚６１の脚爪６１ａを誘導する誘導溝５３ａを設けてある。したがって、反転ハンドル５０への操作ハンドル６０の取付時に結合脚６１の脚爪６１ａが誘導溝５３ａに沿って案内されるから、反転ハンドル５０への操作ハンドル６０の取付作業が容易になる。
【００６９】
ところで、器体１は、当該器体１と同じ外形寸法の器体を３個連設して取り付けることができるように器具取付手段を３組備えた図２７に示すプレート枠８０にも取り付けることができる。言い換えれば、器体１は幅方向（短手方向）の外形寸法が、中央部に窓孔たる開口窓８１を有した矩形枠状に形成され一方向に２ないし３組の器具取付手段を備えた埋込型の配線器具用の取付枠に当該取付枠の器具取付手段の組の数まで連設可能とする寸法に形成されている。
【００７０】
また、２個用の操作ハンドル６０は、開口窓８１の前面側の開口面を２個で覆う程度の大きさに形成されている。ここにおいて、２個用の操作ハンドル６０は、上記一方向を左右方向とするときに図２２ないし図２４に示すように、左右両側に反転ハンドル５０を着脱可能とするように、一対の結合脚６１を左右両側に設けてある。しかして、上記一方向に２組の器具取付手段を備えた取付枠と３組の器具取付手段を備えた取付枠とで操作ハンドル６０の共通化を図ることができ、取付枠毎に専用の操作ハンドル６０を用意する場合に比べて低コスト化を図ることができる。
【００７１】
（実施形態２）
本実施形態では、単極双投型のスイッチ（いわゆる３路スイッチ）を以下に示す。３路スイッチでは、図２８および図２９に示すように、３個の端子装置３０ｂ，３０ｃ，３０ｄを用いる。端子装置３０ｂは上述した実施形態１の単極単投スイッチと同構成であって、単極単投スイッチに用いた端子装置３０ａに代えて２個の端子装置３０ｃ，３０ｄを用いる。各端子装置３０ｃ，３０ｄはそれぞれ端子枠１００ｃ，１００ｄを備え、各端子枠１００ｃ，１００ｄは、ねじ側端子板３３と受け側端子板４５，４６とを実施形態１と同様に結合して形成されている。なお、実施形態１と同様の構成要素には同一の符号を付して説明を省略する。
【００７２】
受け側端子板４５，４６は、端子ねじ３４の先端面３４ａとの間に電線を挟持する保持面４５ｂ，４６ｂ（図３０参照）が形成された主片４５ａ，４６ａと、主片４５ａ，４５ｂの前端縁から連続一体に延長された連結片４５ｃ，４６ｃと連結片４５ｃ，４６ｃから延設され先端部にそれぞれ固定接点４１ａ，４１ｂを設けた接点保持片４５ｄ，４６ｄとが設けられる。
【００７３】
両端子装置３０ｃ，３０ｄの接点保持片４５ｄ，４６ｄの先端部は互いに対向するように配置され、固定接点４１ａ，４１ｂは対向する。また開閉素子４３は厚み方向の両面に可動接点４２ａ，４２ｂを備え、開閉素子４３の回動に伴って各固定接点４１ａ，４１ｂに各可動接点４２ａ，４２ｂが選択的に接触するようにしてある。つまり、固定接点４１ａに可動接点４２ａが接触している間は可動接点４２ｂは固定接点４１ｂから離れ、固定接点４１ｂに可動接点４２ｂが接触している間は可動接点４２ａは固定接点４１ａから離れる。
【００７４】
ここにおいて、端子装置３０ｄの受け側端子板４６では主片４６ａと接点保持片４６ｄとの間の距離が比較的大きいので、図３１に示すように、連結片４６ｃの側縁から保持リブ１３を挟み込む一対の突出片４６ｅを突設してある。このため、端子ねじ３４を締め付ける際の電線の反力による端子枠１００ｄのがたつきを防止でき、固定接点４１ｂの位置がずれるのを防ぐことができるから、安定した接点圧を得ることが可能になる。なお、突出片４６ｅを設けていない図３２に示すような受け側端子板４６を用いた場合には、電線の反力によって接点保持片４６ｄが前方（図中の矢印の向き）へ浮きあがってしまう恐れがある。
【００７５】
端子装置３０ｃ，３０ｄはボディ１０の長手方向における同じ側（図３０における左側）に配置されており、ボディ１０には端子装置３０ｃ，３０ｄの端子ねじ３４に対応して操作溝１５が形成されている。
【００７６】
ところで、図３３および図３４に示すようにネオンランプからなる位置表示灯７１を配置して、反転ハンドル５０の長手方向の一端部に位置表示灯７１からの光を透過させるための透孔５２を設けたものを用いてもよい。なお、位置表示灯７１は、図３６および図３７に示すような形状の金属板よりなる接触子４７を介して端子装置３０ａと端子装置３０ｂとの間に挿入される。
【００７７】
このような場合、各ねじ側端子板３３の電線ストッパ片３３ｂに導電性の金属板からなる接触子４７を結合すればよい。各接触子４７は位置表示灯７１が実装された回路基板に弾接するように弾性が付与されており、反転ハンドル５０の揺動にかかわらず接触子４７がつねに回路基板に弾接するようにしてある。回路基板には位置表示灯７１と抵抗（図示せず）との直列回路が実装され、この直列回路の各一端にそれぞれ接触子４７が接触する。この種の３路スイッチは階段灯の点灯・消灯に用いられることが多く、階上と階下とにそれぞれ３路スイッチを配置して階段灯の点灯・消灯とを階上と階下とのいずれにおいても操作可能とすることができる。したがって、両固定接点４１ａ，４１ｂの間に位置表示灯７１と抵抗との直列回路を挿入しておけば、階段灯の消灯時に位置表示灯７１を点灯させることができる。この種の回路の接続関係は周知であるから説明を省略する。また、３路スイッチの他の構成は単極単投型のスイッチと同様である。
【００７８】
ここに、接触子４７は、長手方向の一端部における両側縁から後方に向かって延設片４８が延設されており、上述の電線ストッパ片３３ｂの両側縁に突設した取付突起３３ｅが延設片４８に設けた係合溝４９に係合することによって接触子４７とねじ側端子板３３とが結合される。ここに、取付突起３３ｅには接触子４７側ほど電線ストッパ片３３ｂからの突出量を小さくする傾斜面３３ｆが形成されているので、位置表示灯７１への通電経路となる接触子４７を組立時にねじ側端子板３３と簡単に結合することができる。
【００７９】
ところで、位置表示灯７１を備えた反転ハンドル５０を用いる場合、操作ハンドル６０としては、図３３ないし図３５に示すように、操作ハンドル６０の後面に位置表示灯７１の光を操作ハンドル６０の表示部６３へ導光するレンズ６４を操作ハンドル６０の後面に配設すればよい。ここに、レンズ６４は反転ハンドル５０が左右両側いずれの位置に取り付けられた場合にも位置表示灯７１に一部が重なるような大きさに形成されている（つまり、位置表示灯７１に対応する部位に跨る大きさに形成されている）ので、２個用の操作ハンドル６０において上記左右方向の左右両側のいずれに反転ハンドル５０を取り付けた場合でも位置表示灯７１の光を操作ハンドル６０の表示部６３へ導光することができる。
【００８０】
ところで、端子装置３０ａ，３０ｂ，３０ｃ，３０ｄでは、図３８ないし図４１に示すように、主片３１ａ，３２ａ，４５ａ，４６ａに上述の位置決め孔３７および結合孔３８を設け、ねじ側端子板３３を共通化できるようにしてあるので、低コスト化を図ることができる。
【００８１】
【発明の効果】
請求項１の発明は、可動接点とともに接点装置を構成する固定接点を一体に備える端子装置が器体内に収納されたスイッチであって、端子装置は、器体に取り付けた環状の端子枠と、端子枠の周壁に貫設されたねじ孔に螺合し電線を端子枠との間に接続保持する端子ねじとを備え、端子枠において端子ねじの先端面との間に電線を挟持する部位には端子枠の開口面に沿った断面が端子ねじの先端面から離れる向きへ膨らむように湾曲する保持面が形成されてなるものであり、端子枠において端子ねじの先端面との間に電線を挟持する部位には端子枠の開口面に沿った断面が端子ねじの先端面から離れる向きへ膨らむように湾曲する保持面が形成されているので、芯線が単線である電線、芯線が撚り線である電線などの径や種類によらず、異径電線および異種電線を組み合わせて用いる場合でも電線を十分な強度で保持することができるから、例えば、１つの端子枠に芯線が単線である電線と芯線が撚り線である電線とを同時に接続する場合、１つの端子枠に芯線が単線である電線を２本接続する場合など、多様な接続形態に対応することができるという効果がある。
【００８２】
また、請求項１の発明では、端子枠は、ねじ孔が貫設されたねじ側端子板と保持面が形成された受け側端子板との２部材をかしめて結合することにより形成され、電線の挿入深さを規制する電線ストッパ片をねじ側端子板に一体に設け、固定接点を保持した接点保持片を受け側端子板から延長した連結片の先端部に設けてあるので、電線の挿入深さはねじ側端子板に一体に設けられた電線ストッパにより規制されるから、例えば電線の挿入長さが長過ぎるような場合に連結片や接点保持片が電線の影響を受けず、固定接点の位置がずれるのを防止することができ、また、ねじ側端子板と受け側端子板との２部材がかしめて結合されているので、端子ねじを締め付けてもねじ側端子板が変形しにくく、端子ねじの締め付けに対して強いから、結果的に電線を強固に保持することができるという効果がある。
【００８３】
請求項２の発明は、請求項１の発明において、上記ねじ側端子板は、上記ねじ孔の周縁外周部にカウンタシンクが一体に形成されているので、カウンタシンクを設けていない場合に比較すると端子枠と端子ねじとの螺合量を大きくとることができ、端子ねじを強固に締め付けることができるから、結果的に電線を強固に保持することができるという効果がある。
【００８４】
請求項３の発明は、請求項２の発明において、上記ねじ側端子板においてカウンタシンクの周辺で両側縁から側方へ突出する張出片が設けられ、上記受け側端子板には上記張出片が挿入される位置決め孔を設けてあるので、端子枠の組立時に張出片と位置決め孔とを利用して上記ねじ側端子板を上記受け側端子板に仮固定でき、上記ねじ側端子板と上記受け側端子板との結合作業が容易になり、また、カウンタシンクの強度を高めることができるという効果がある。
【００８５】
請求項４の発明は、請求項１の発明において、上記端子枠は、上記器体の内面に突設されたリブを挟み込む一対の突出片を上記連結片に設けてあるので、端子ねじを締め付ける際の電線の反力による端子枠のがたつきを防止でき、固定接点の位置がずれるのを防ぐことができるから、安定した接点圧を得ることが可能になるという効果がある。
【００８６】
請求項５の発明は、請求項１の発明において、上記器体に揺動自在に枢支された形で上記器体に装着され上記接点装置を開閉する反転ハンドルと、反転ハンドルに取り付けた表示灯とを備え、上記端子枠は、上記電線ストッパ片の両側縁に取付突起が突設され、表示灯への通電経路となる金属板よりなる接触子から延設された延設片に設けた係合部へ取付突起が係合することによって接触子とねじ側端子板とが結合され、取付突起には接触子側ほど電線ストッパ片からの突出量を小さくする傾斜面が形成されているので、表示灯への通電経路となる接触子を組立時にねじ側端子板と簡単に結合することができるという効果がある。
【００８７】
請求項６の発明は、請求項１の発明において、上記器体は箱状であって、前面開口した合成樹脂製のボディと、ボディの前面側に配設されるカバーとからなり、ボディの幅方向における両側面にはボディの長手方向に離間して各一対の組立突起が突設され、カバーの後端縁からは組立舌片が後方に突設され、組立舌片に設けた組立孔に組立突起が係合することによってボディとカバーとが結合され、ボディの長手方向における上記組立突起の幅をボディの両側面で異ならせてあるので、組立時にカバーとボディとを簡単に結合することができ、しかも、カバーとボディとの逆組を防止することができるという効果がある。
【００８８】
請求項７の発明は、請求項１の発明において、上記器体は箱状であって、前面開口した合成樹脂製のボディと、ボディの前面側に配設されるカバーとからなり、ボディの幅方向における両側面にはボディの長手方向に離間して各一対の組立突起が突設され、カバーの後端縁からは組立舌片が後方に突設され、組立舌片に設けた組立孔に組立突起が係合することによってボディとカバーとが結合され、上記長手方向の両端部において上記ボディと上記カバーとの対向面の一方にリブを設け、他方にリブが嵌る凹部を設け、両端部において上記リブの幅を異ならせてあるので、組立時にカバーとボディとを簡単に結合することができ、しかも、カバーとボディとの逆組を防止することができるという効果がある。
【００８９】
請求項８の発明は、請求項６の発明において、上記長手方向の両端部において上記ボディと上記カバーとの対向面の一方にリブを設け、他方にリブが嵌る凹部を設け、両端部において上記リブの幅を異ならせてあるので、カバーとボディとの逆組をより確実に防止することができるという効果がある。
【００９０】
請求項９の発明は、請求項１の発明において、上記器体に揺動自在に枢支された形で上記器体に装着され上記接点装置を開閉する反転ハンドルと、反転ハンドルの前面側に着脱自在に取り付けられる操作ハンドルと、埋込型の配線器具用の取付枠に取り付けるための取付部とを備え、上記取付枠に取着された状態で操作ハンドルを反転ハンドルから外すための切欠部を操作ハンドルの後端縁に設けてあるので、上記器体が上記取付枠に取着され反転ハンドルに操作ハンドルが取り付けられた状態でも切欠部にマイナスドライバなどの先端部を差し込んで操作ハンドルが反転ハンドルから外れる向きの力を作用させることにより操作ハンドルを反転ハンドルから外すことができるという効果がある。
【００９１】
請求項１０の発明は、請求項９の発明において、操作ハンドルと反転ハンドルとの互いの対向面それぞれに反転ハンドルへの操作ハンドルの取付方向を規定方向のみに規制する逆組み防止リブを突設してあるので、反転ハンドルに対する操作ハンドルの取付方向を規制でき、反転ハンドルに対する操作ハンドルの逆組みを防止することができるという効果がある。
【００９２】
請求項１１の発明は、請求項９の発明において、操作ハンドルと反転ハンドルとの互いの対向面に操作ハンドルの取付方向を指示するマークを表示してあるので、反転ハンドルへの操作ハンドルの取付方向を容易に確認できるという効果がある。
【００９３】
請求項１２の発明は、請求項９の発明において、上記器体は、短手方向の外形寸法が、中央部に窓孔を有した矩形枠状に形成され一方向に２ないし３組の器具取付手段を備えた埋込型の配線器具用の取付枠に当該取付枠の器具取付手段の組の数まで連設可能とする寸法に形成され、上記操作ハンドルは、上記窓孔の前面側の開口面を２個で覆う程度の大きさに形成され、上記一方向を左右方向とするときに左右両側に上記反転ハンドルを着脱可能としてあるので、上記一方向に２組の器具取付手段を備えた取付枠と３組の器具取付手段を備えた取付枠とで上記操作ハンドルの共通化を図ることができ、取付枠毎に専用の操作ハンドルを用意する場合に比べて低コスト化を図ることができるという効果がある。
【００９４】
請求項１３の発明は、請求項９の発明において、上記操作ハンドルの後面には、上記反転ハンドルに形成された鍔片の一部に係止される結合脚が突設され、上記反転ハンドルにおいて鍔片には結合脚を誘導する誘導溝が設けられているので、上記反転ハンドルへの上記操作ハンドルの取付時に結合脚が誘導溝に沿って案内されるから、上記反転ハンドルへの上記操作ハンドルの取付作業が容易になるという効果がある。
【００９５】
請求項１４の発明は、請求項１２の発明において、上記反転ハンドルに表示灯を備え、操作ハンドルの後面には、表示灯の光を操作ハンドルの表示部へ導光するレンズが配設され、当該レンズは上記左右両側それぞれにおいて表示灯に対応する部位に跨る大きさに形成されているので、上記窓孔の前面側の開口面を２個で覆う程度の大きさに形成された操作ハンドルにおいて上記左右方向の左右両側のいずれに反転ハンドルを取り付けた場合でも表示灯の光を操作ハンドルの表示部へ導光することができるという効果がある。
【００９６】
請求項１５の発明は、請求項９の発明において、上記取付枠が施工面に埋込配置された埋込ボックスに取り付けるためのボックスねじが挿通される取付孔が形成されたものであって、上記操作ハンドルにおいて上記器体の短手方向の両側壁の後端縁には、上記器体を上記取付枠に取り付けた状態でボックスねじの干渉を防止する凹部よりなる逃げ部が設けられているので、上記器体を上記取付枠に取り付けた状態でボックスねじの干渉を防止する凹部よりなる逃げ部が上記操作ハンドルに設けられていることによって、上記操作ハンドルの操作時にボックスねじが上記操作ハンドルに干渉するのを回避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を示す分解斜視図である。
【図２】同上の断面図である。
【図３】同上においてカバーを取り外した状態の正面図である。
【図４】同上の要部説明図である。
【図５】同上の要部説明図である。
【図６】同上を示し、（ａ）はカバーの背面図、（ｂ）はボディの正面図である。
【図７】同上に用いる端子装置の下面図である。
【図８】同上に用いる端子装置の使用例を示し、電線を接続した状態の正面図である。
【図９】同上に用いる端子装置の使用例を示し、電線を接続した状態の正面図である。
【図１０】同上を用いるねじ側端子板を示し、（ａ）は下面図、（ｂ）は側面図、（ｃ）は正面図である。
【図１１】同上に用いる端子装置の組立工程の説明図である。
【図１２】同上に用いる端子装置の組立工程の説明図である。
【図１３】同上に用いる端子装置の比較例を示す下面図である。
【図１４】同上に用いる端子装置の比較例を示す下面図である。
【図１５】同上を取付枠に取り付けた状態の断面図である。
【図１６】同上における反転ハンドルへの操作ハンドルの取り付け方の説明図である。
【図１７】同上に用いる１個用の操作ハンドルの斜視図である。
【図１８】同上における１個用の操作ハンドルへの反転ハンドルの取り付け方の説明図である。
【図１９】同上に用いる２個用の操作ハンドルの斜視図である。
【図２０】同上における２個用の操作ハンドルへの反転ハンドルの取り付け方の説明図である。
【図２１】同上の要部説明図である。
【図２２】同上における２個用の操作ハンドルへの反転ハンドルの取り付け方の説明図である。
【図２３】同上における２個用の操作ハンドルへの反転ハンドルの取り付け方の説明図である。
【図２４】同上のスイッチをプレート枠に取り付けた状態の正面図である。
【図２５】同上をプレート枠に２個取り付ける場合の分解斜視図である。
【図２６】同上をプレート枠に１個取り付ける場合の分解斜視図である。
【図２７】同上のスイッチを他のプレートに取り付けた状態の正面図である。
【図２８】実施形態２を示す分解斜視図である。
【図２９】同上の断面図である。
【図３０】同上においてカバーを取り外した状態の正面図である。
【図３１】同上の要部説明図である。
【図３２】同上の比較例の要部説明図である。
【図３３】同上の他の構成例における要部断面図である。
【図３４】同上の他の構成例における２個用の操作ハンドルへの反転ハンドルの取付位置の説明図である。
【図３５】同上の他の構成例における操作ハンドルの下面図である。
【図３６】同上の他の構成例に用いる接触子を示し、（ａ）は正面図、（ｂ）は下面図である。
【図３７】同上の他の構成例における接触子と端子装置との関係説明図である。
【図３８】同上における受け側端子板を示し、（ａ）は正面図、（ｂ）は下面図である。
【図３９】同上における受け側端子板を示し、（ａ）は正面図、（ｂ）は下面図である。
【図４０】同上における受け側端子板を示し、（ａ）は正面図、（ｂ）は下面図である。
【図４１】同上における受け側端子板を示し、（ａ）は正面図、（ｂ）は下面図である。
【図４２】従来例を示す断面図である。
【図４３】同上を取付枠に取り付けて操作ハンドルを取着した状態の断面図である。
【図４４】同上における操作ハンドルの取り付け方の説明図である。
【図４５】他の従来例を示す断面図である。
【図４６】適用電線の説明図である。
【符号の説明】
１器体
１２電線挿入孔
３０ａ，３０ｂ端子装置
３５ねじ孔
３６カウンタシンク
１００ａ，１００ｂ端子枠
４５，４６端子板[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a switch.
[0002]
[Prior art]
Conventionally, a terminal device called a quick connection terminal has been widely used in a wiring device such as a switch or an outlet or a lighting device in order to connect an electric wire introduced into the device through an electric wire insertion hole provided in the device. Yes. For example, in the switch shown in FIG. 42, the terminal plate 3 that contacts the electric wire 2 that is housed in the container body 1 and is introduced into the container body 1 through the electric wire insertion hole 12, and the lock that holds the electric wire 2 between the terminal plate 3. And a spring 4. The lock spring 4 is a leaf spring, and is formed so as to hold the electric wire 2 by sandwiching the electric wire 2 between the contact piece 4 a and the lock piece 4 b provided on the lock spring 4 and the terminal plate 3. ing. That is, when the electric wire 2 is introduced into the main body 1 through the electric wire insertion hole 12 provided in the main body 1, the electric wire 2 bends in a direction to separate the contact piece 4 a and the locking piece 4 b from the terminal plate 3, and the contact piece 4 a and the chain The electric wire 2 is configured to be sandwiched between the terminal plate 3 and the lock piece 4b by the spring force generated in the lock piece 4b. Here, in a state where the electric wire 2 is sandwiched between the terminal plate 3 and the contact piece 4a and the locking piece 4b, the edges of the contact piece 4a and the locking piece 4b elastically contact the electric wire 2, and When the locking piece 4b bites into the part, the electric wire 2 is prevented from coming off.
[0003]
The above-described switch is provided on the front side of the reversing handle 50 attached to the body 1 so as to be swingably supported by the body 1, compared to the reversing handle 50 that covers the front surface of the reversing handle 50. An operation handle 60 having a large area is attached. A coupling leg 61 that engages with the coupling claw 53 provided on the reversing handle 50 protrudes from the rear surface of the operation handle 60, and a front end portion (rear end portion) of the coupling leg 61 engages with the rear surface of the coupling claw 53. A leg claw 61 a is formed, and the reversing handle 50 is held between the presser protrusion 62 protruding from the rear surface of the operating handle 60 and the leg claw 61 a, and as a result, the operating handle 60 is fixed to the reversing handle 50. When the operation handle 60 is attached to the reversing handle 50, as shown in FIG. 43, the coupling pawl 53 at the right end is positioned with the left end of the reversing handle 50 positioned behind (lower in the drawing) the right end. After engaging the leg claw 61a of the coupling leg 61 of the operation handle 60, the central portion of the operation handle 60 is pressed toward the body 1 side and the coupling leg of the operation handle 60 is connected to the coupling claw 53 at the left end of the reversing handle 50. 61 leg claws 61a are engaged.
[0004]
By the way, the abutting ribs 25 projecting from the front surface of the container body 1 are respectively provided at both ends in the longitudinal direction of the container body 1, and a pair of attachment claws 26 are provided on the outer surface of each of the abutting ribs 25. 44, the container body 1 can be held by the plate frame 80 by engaging with holding grooves 87a and 87b provided in the plate frame 80 which is a mounting frame for a wiring device. . Here, the abutment rib 25 abuts on the back side of the abutment portions 84 d and 85 d provided on the plate frame 80 when the container 1 is attached to the plate frame 80, and the operation handle 60 is located between the abutment ribs 25. The gap formed between the container 1 and the operation handle 60 in the construction state is difficult to see from the outside.
[0005]
In addition, in the switch shown in FIG. 45, as a terminal device, the terminal plate 3 ′ that contacts the electric wire 2 housed in the container body 1 and introduced into the container body 1 through the electric wire insertion hole 12 is inserted into the terminal plate 3 ′. The terminal screw 5 and a rectangular plate-like nut 6 screwed to the tip of the terminal screw 5 are known. In this terminal device, by inserting the electric wire 2 into the container body 1 through the electric wire insertion hole 12, and turning the terminal screw 6 to be tightened at the tip of the minus driver through the operation hole 7 provided on the side wall of the container body 1, The distance between the nut 6 and the main piece 3a ′ of the terminal plate 3 ′ is reduced so that the electric wire 2 is clamped.
[0006]
[Problems to be solved by the invention]
By the way, the terminal device used for the switch shown in FIG. 42 is assumed to connect an electric wire whose core wire is a single wire, and when the core wire is a stranded wire, the effect of retaining by the locking piece. Cannot be obtained sufficiently. That is, when the terminal plate 3 whose main piece 3a which is a contact portion with the electric wire is a flat plate like the terminal plate 3 shown in FIG. 42, the terminal plate 3 and the locking piece 4b are formed when the core wire is a stranded wire. Since each wire constituting the stranded wire spreads apart when introduced in between, the distance between the lock spring 4 and the main piece 3a of the terminal plate 3 is reduced, and sufficient contact pressure by the lock spring 4 can be obtained. There is a problem that the electric wire 2 falls off.
[0007]
In addition, the terminal device used in the switch shown in FIG. 44 has the same type of electric wire when one electric wire whose core wire is a single wire is connected, when one electric wire whose core wire is a stranded wire is connected. There is no problem when connected by a combination of strand diameters, but the mating side surface (that is, the surface facing the nut 6 in the main piece 3a of the terminal plate 3 ') that holds the electric wire 2 between the nut 6 is flat. 46, for example, when a combination of different-diameter wires and different types of wires shown in FIG. 46 is used, the wires cannot be held with sufficient strength and the wires fall off. was there.
[0008]
When the switch shown in FIG. 42 is attached to the plate frame 80 as shown in FIG. 44, the operation handle 60 is attached to the reversing handle 50 after the container 1 is attached to the plate frame 80. Since the gap between the both end portions (left and right end portions in FIG. 44) of the operation handle 60 attached to the reversing handle 50 of the container 1 attached to the plate body 80 and the contact portions 84d and 85d of the plate frame 80 is small. There was a problem that the handle 60 could not be removed and the instrument could not be replaced.
[0009]
The present invention has been made in view of the above reasons, and its main purpose is to provide a switch including a terminal device that can hold an electric wire with sufficient strength even when different electric wires and different electric wires are used in combination. It is to provide.
[0010]
[Means for Solving the Problems]
The invention of claim 1 is a switch in which a terminal device integrally including a fixed contact that constitutes a contact device together with a movable contact is housed in a container body, and the terminal device includes an annular terminal frame attached to the container body, A terminal screw that is screwed into a screw hole penetrating the peripheral wall of the terminal frame and that holds the electric wire between the terminal frame and the terminal frame. Is characterized in that a holding surface that is curved so that a cross section along the opening surface of the terminal frame swells away from the tip surface of the terminal screw is formed. Since a holding surface that is curved so that the cross section along the opening surface of the terminal frame swells away from the tip surface of the terminal screw is formed at the portion that holds the electric wire between the electric wires, the electric wire whose core wire is a single wire, Diameter and type of electric wire whose core wire is a stranded wire Regardless of this, even when different diameter electric wires and different types of electric wires are used in combination, the electric wires can be held with sufficient strength. For example, an electric wire whose core wire is a single wire and an electric wire whose core wire is a stranded wire in one terminal frame Can be connected simultaneously, such as when connecting two electric wires having a single core wire to one terminal frame.
[0011]
In the invention of claim 1, the end Child frame is ,Right Screw side terminal board with through holes And keep It is formed by caulking and joining two members to the receiving terminal board on which the holding surface is formed , Electric A wire stopper piece that regulates the insertion depth of the wire is integrated with the screw-side terminal plate. , Solid Contact holding piece holding constant contact Received Since the insertion depth of the electric wire is regulated by the electric wire stopper integrated with the screw side terminal plate, the insertion length of the electric wire is long. In such a case, the connecting piece and the contact holding piece are not affected by the electric wire, and the position of the fixed contact can be prevented from shifting, and the screw side terminal plate and the receiving side terminal plate have two members. The screw-side terminal plate is not easily deformed even if the terminal screw is tightened and is strong against tightening the terminal screw. Because As a result, the electric wire can be firmly held.
[0012]
Claim 2 The invention of claim 1 is the invention of claim 1, Screw side terminal board The counter sink is integrally formed on the outer periphery of the periphery of the screw hole. If you do not have a counter sink Compared to the above, the amount of screwing between the terminal frame and the terminal screw can be increased, and the terminal screw can be firmly tightened. As a result, the electric wire can be firmly held.
[0013]
Claim 3 The invention of claim 2 In the invention, the screw-side terminal plate is provided with a protruding piece that protrudes laterally from both side edges around the counter sink, and the receiving-side terminal plate is provided with a positioning hole into which the protruding piece is inserted. Therefore, when the terminal frame is assembled, the screw-side terminal plate can be temporarily fixed to the receiving-side terminal plate by using the projecting piece and the positioning hole, and the screw-side terminal plate and the receiving-side terminal plate are joined. And the strength of the counter sink can be increased.
[0014]
Claim 4 In the invention of claim 1, in the invention of claim 1, the terminal frame is , The above body A pair of projecting pieces sandwiching ribs projecting from the inner surface of the terminal are provided on the connecting piece, so that the terminal frame can be prevented from rattling due to the reaction force of the electric wire when the terminal screw is tightened. Since it is possible to prevent the displacement, a stable contact pressure can be obtained.
[0015]
Claim 5 According to the invention of claim 1, there is provided a reversing handle for opening and closing the contact device mounted on the device in a swingably supported manner on the device, and an indicator lamp attached to the reversing handle. The terminal frame is , Both side edges of the above wire stopper piece A mounting protrusion is provided on the contact piece and a screw side by engaging the mounting protrusion with an engaging portion provided on an extending piece extending from a contact made of a metal plate that serves as an energization path to the indicator lamp. The terminal plate is connected, and the mounting projection has an inclined surface that reduces the amount of protrusion from the wire stopper piece toward the contact side. Can be easily combined with the board.
[0016]
Claim 6 The invention according to claim 1 is the invention according to claim 1, wherein the container body is box-shaped, and includes a synthetic resin body having a front opening and a cover disposed on the front side of the body, in the width direction of the body. A pair of assembly protrusions are provided on both side surfaces spaced apart in the longitudinal direction of the body, and assembly tongues project rearward from the rear edge of the cover. Assembly protrusions are provided in assembly holes provided in the assembly tongue pieces. The body and the cover are coupled by engaging, and the width of the assembly protrusion in the longitudinal direction of the body is different on both sides of the body, so that the cover and the body can be easily coupled during assembly. Moreover, the reverse assembly of the cover and the body can be prevented.
[0017]
Claim 7 The invention according to claim 1 is the invention according to claim 1, wherein the container body is box-shaped, and includes a synthetic resin body having a front opening and a cover disposed on the front side of the body, in the width direction of the body. A pair of assembly protrusions are provided on both side surfaces spaced apart in the longitudinal direction of the body, and assembly tongues project rearward from the rear edge of the cover. Assembly protrusions are provided in assembly holes provided in the assembly tongue pieces. Engaging the body and the cover, providing a rib on one of the opposing surfaces of the body and the cover at both ends in the longitudinal direction, and providing a recess in which the rib fits on the other. Since the ribs have different widths, the cover and the body can be easily combined during assembly, and the reverse assembly of the cover and the body can be prevented.
[0018]
Claim 8 The invention of claim 6 In the invention, the ribs are provided on one of the opposing surfaces of the body and the cover at both ends in the longitudinal direction, the recesses are fitted on the other, and the widths of the ribs are different at both ends. The reverse assembly of the cover and the body can be prevented more reliably.
[0019]
Claim 9 The invention according to claim 1 is characterized in that, in the invention of claim 1, a reversing handle that is mounted on the device body in a swingably supported manner on the device body, opens and closes the contact device, and is detachably attached to the front side of the reversing handle. An operating handle to be mounted and a mounting portion for mounting to a mounting frame for an embedded wiring apparatus, and a notch for removing the operating handle from the reversing handle in a state of being attached to the mounting frame. Even if the instrument is attached to the mounting frame and the operating handle is attached to the reversing handle, the tip of a flathead screwdriver or the like is inserted into the notch and the operating handle is removed from the reversing handle. The operating handle can be detached from the reversing handle by applying a force in the direction of coming off.
[0020]
Claim 10 The invention of claim 9 In the present invention, the reverse assembly prevention rib for restricting the mounting direction of the operating handle to the reversing handle to only the specified direction is provided on each of the opposing surfaces of the operating handle and the reversing handle. The mounting direction of the operation handle can be restricted, and the reverse assembly of the operation handle to the reversing handle can be prevented.
[0021]
Claim 11 The invention of claim 9 In this invention, since the mark indicating the mounting direction of the operating handle is displayed on the opposing surfaces of the operating handle and the reversing handle, the mounting direction of the operating handle to the reversing handle can be easily confirmed.
[0022]
Claim 12 The invention of claim 9 In the invention of claim 1, the container body is an embedded wiring having a lateral dimension of a rectangular frame shape having a window hole in the central portion and having two to three sets of instrument mounting means in one direction. The size of the operation handle is such that two opening covers on the front side of the window hole are covered with the mounting frame for the device, and the operation handle is formed to have a size that can be connected to the number of sets of the device mounting means of the mounting frame. When the one direction is the left-right direction, the reversing handle is detachable on both the left and right sides, so that the mounting frame having two sets of instrument mounting means in the one direction and three sets of instrument mounting means The above-mentioned operation handle can be made common with the mounting frame provided with a lower cost than when a dedicated operation handle is prepared for each mounting frame.
[0023]
Claim 13 The invention of claim 9 In the present invention, a coupling leg that is locked to a part of the hook formed on the reversing handle protrudes on the rear surface of the operation handle, and the guiding leg is guided to the hook on the reversing handle. Since the groove is provided, the coupling leg is guided along the guide groove when the operation handle is attached to the reversing handle, so that the operation of attaching the operating handle to the reversing handle is facilitated.
[0024]
Claim 14 The invention of claim 12 In the present invention, the reversing handle is provided with an indicator lamp, and a lens for guiding the light of the indicator lamp to the display portion of the operator handle is disposed on the rear surface of the operator handle. The operation handle formed so as to cover the opening surface on the front side of the window hole is reversed to either the left or right side in the left-right direction. Even when the handle is attached, the light of the indicator lamp can be guided to the display portion of the operation handle.
[0025]
Claim 15 The invention of claim 9 In the invention, the mounting frame is formed with a mounting hole through which a box screw for mounting to an embedded box embedded in a construction surface is formed, and the operation handle has a short side of the container body. In the rear end edges of both side walls in the direction, there is provided a relief portion comprising a recess that prevents the interference of the box screw in a state in which the vessel is attached to the attachment frame, so the vessel is attached to the attachment frame. By providing the operating handle with a relief portion formed of a recess that prevents interference of the box screw in the attached state, it is possible to avoid the box screw from interfering with the operating handle when the operating handle is operated. .
[0026]
DETAILED DESCRIPTION OF THE INVENTION
(Embodiment 1)
As shown in FIGS. 1 to 3, the switch of the present embodiment includes a body 10 of a rectangular parallelepiped synthetic resin molded product having an open front surface, and a synthetic resin formed in a rectangular frame shape and coupled to the front side of the body 10. The container 1 is formed of a cover 20 of a molded product. A pair of assembly projections 11 project from the both outer side surfaces in the width direction of the body 10 so as to be spaced apart in the longitudinal direction of the body 10, and an assembly tongue piece 21 extends rearward from the rear end edge of the cover 20. The body 10 and the cover 20 are coupled by the assembly protrusion 11 engaging with the assembly hole 21 a provided in the assembly tongue piece 21.
[0027]
Here, in the present embodiment, the width of the assembly protrusion 11 on one outer surface (the lower surface in FIG. 6B) of the body 10 shown in FIG. 4 is W1, and the other outer surface of the body 10 shown in FIG. When the width of the assembly protrusion 11 in FIG. 6B is W2, the width of the assembly protrusion 11 in the longitudinal direction of the body 10 is different from the width of the assembly protrusion 11 in the longitudinal direction of the body 10. Are different). On the other hand, the width W1 ′ of the assembly hole 21a in the assembly tongue piece 21 formed on the same plane as one outer side surface (the upper surface of FIG. 6A) of the cover 20 shown in FIG. 4 is slightly larger than W1. The width W2 ′ of the assembly hole 21a in the assembly tongue piece 21 formed in a large width and on the same plane as the other outer surface (the lower surface of FIG. 6A) of the cover 20 shown in FIG. 5 is larger than W2. Although it is formed with a slightly large width, W2 ′ and W1 ′ are made different from each other as in the magnitude relationship between W2 and W1. Thus, reverse assembly of the cover 20 and the body 10 can be prevented during assembly.
[0028]
Further, as shown in FIG. 6 (a), ribs 27 projecting rearward are formed along the width direction of the cover 20 on the rear surface side at both ends in the longitudinal direction of the cover 20, and FIG. As shown in FIG. 2, the front surface of both ends of the body 10 in the longitudinal direction (left-right direction) is formed with a recess 16 in which the rib 27 is positioned during assembly. When the width of the rib 27 at the left end at W3 is W3 and the width of the rib 27 at the other end (right end in the figure) is W4, W3 and W4 are different from each other. The reverse assembly of the cover 20 and the body 10 can be prevented during assembly.
[0029]
The body 10 has two terminal devices 30a and 30b for connecting the electric wires 2 inserted into the container 1 through the electric wire insertion holes 12 provided on the rear wall of the body 10, and an electric circuit between the terminal devices 30a and 30b. The contact device 40 that opens and closes is accommodated. On the other hand, a reversing handle 50 of a synthetic resin molded product is mounted on the opening window 22 in the center of the cover 20 so as to be swingable with respect to the cover 20. As the reversing handle 50 swings, the reversing handle 50 swings. The contact device 40 is opened and closed. An operation handle 60 (see FIG. 15) of a synthetic resin molded product overlapping the front surface of the cover 20 is detachably coupled to the front surface side of the reversing handle 50, and the reversing handle is swung as an operating portion. The contact device 40 is opened and closed by swinging 50.
[0030]
A plurality of holding grooves 14 (see FIG. 3) and holding ribs 13 for positioning the terminal devices 30a and 30b and the contact device 40 are formed on the inner surface of the body 10 respectively. The terminal devices 30a and 30b are disposed in both ends of the body 10 in the longitudinal direction, and the contact device 40 is disposed in the center of the body 10 in the longitudinal direction.
[0031]
The terminal devices 30a and 30b are provided on the rear wall of the container body 1 by screwing into annular terminal frames 100a and 100b attached to the container body 1 and screw holes 35 penetrating the peripheral walls of the terminal frames 100a and 100b. Terminal screws 34 are provided for connecting and holding the electric wires introduced into the terminal frames 100a and 100b through the electric wire insertion holes 12 between the terminal frames 100a and 100b. That is, the terminal devices 30a and 30b are configured such that the terminal screws 34 are screwed into the screw holes 35 penetrating the annular terminal frames 100a and 100b, so that the end surfaces 43a of the terminal screws 34 and the terminal frames 100a and 100b are interposed. By holding the electric wire between the two, the electric wire is mechanically held and electrically connected.
[0032]
In the terminal frames 100a and 100b, a counter sink 36 is formed by burring on the outer periphery of the periphery of the screw hole 35. Accordingly, in the terminal frames 100a and 100b, the counter sink 36 is provided in the screw hole 35 into which the terminal screw 34 is screwed. Therefore, compared with the case where the counter sink 36 is not provided, the terminal frames 100a and 100b and the terminal screw 34 are not provided. The screwing amount can be increased, and the terminal screw 34 can be firmly tightened.
[0033]
The cross section along the opening surface of the terminal frames 100a, 110b is the tip of the terminal screw 34 at a portion where the electric wire is sandwiched between the terminal frames 100a, 100b and the tip surface 34a of the terminal screw 34 (see FIGS. 1 and 8). Holding surfaces 31b and 32b that are curved to swell in a direction away from the surface are formed.
[0034]
The terminal frames 100a and 100b are formed by joining two members, the screw side terminal plates 33 and 33 in which the screw holes 35 are penetrated, and the receiving side terminal plates 31 and 32 in which the holding surfaces 31b and 32b are formed. Has been. Here, since the screw side terminal plate 33 is made common in both the terminal frames 100a and 100b, the cost can be reduced.
The screw side terminal plates 33 and 33 and the receiving side terminal plates 31 and 32 are each formed by bending a sheet metal.
[0035]
As shown in FIG. 10, the screw-side terminal plates 33 and 33 are formed in an L shape, and a main piece 33 a in which a screw hole 35 and a counter sink 36 are formed, and a main piece 33 a that is substantially orthogonal to the main piece 33 a. And an electric wire stopper piece 33b for restricting the insertion depth. That is, as shown in FIG. 7, the insertion depth of the electric wire 2 is regulated by the end of the electric wire 2 coming into contact with the electric wire stopper piece 33b.
[0036]
On the other hand, the receiving-side terminal plate 31 has a projecting portion 33c projecting on both sides of the holding groove 14 provided on the inner peripheral surface of the operation groove 15 in the vicinity of one end portion (left end portion in FIG. 3) in the longitudinal direction of the body 10. 11 (see FIG. 11) is inserted and held, a contact holding piece 31d disposed at the center in the longitudinal direction of the body 10 and fixed contact 41 is fixed, a front edge of the main piece 31a and a contact holding piece 31d Connecting pieces 31c and 32c extended along the opening surface of the body 10 so as to continuously and integrally connect the front end edges of the body 10. That is, a contact holding piece 31d, which extends from the connecting piece 31c and has a fixed contact 41 at the tip, extends obliquely rearward (downward in FIG. 2) toward the central portion of the body 10 in the longitudinal direction. Established.
[0037]
Further, the receiving side terminal plate 32 is supported along the rear surface of the body 10 from the rear end edge of the main piece 32a having a U-shaped cross section in which the holding surface 32b is formed toward the longitudinal center of the body 10. A piece 32d is extended, and a fulcrum protrusion 32e that is bent like a letter is formed at the tip of the support piece 32d. The rear surface of the central piece 43a of the switching element 43 made of a U-shaped conductive plate abuts on the fulcrum protrusion 32e.
[0038]
The contact device 40 includes an opening / closing element 43 that is formed in a U shape and a rear surface of the center piece 43a contacts the fulcrum protrusion 32e. The opening / closing element 43 has side pieces 43b and 43c extending from both ends of the center piece 43a, and is swingably disposed in the central portion of the body 10 in the longitudinal direction with the fulcrum protrusion 32e as a center. At the center of the body 10, holding ribs 13, 13 project from inner surfaces of both side walls in the width direction of the body 10, and the movement of the opening / closing element 43 in the width direction of the body 10 is restricted by the ribs 13, 13. The A protrusion 43 d is provided on the side edge of the side piece 43 b of the opening / closing element 43, and the protrusion 43 d abuts on the holding rib 13, thereby restricting the swing range of the opening / closing element 43.
[0039]
The opening / closing element 43 is disposed so as to face the above-described contact holding piece 31d, and one side piece 43b is provided with a movable contact 42 that is in contact with and away from the fixed contact 41 provided on the contact holding piece 18d. That is, when the opening / closing element 43 rotates about the fulcrum protrusion 32e, the movable contact 42 contacts and separates from the fixed contact 41, and the terminal device 30a and the terminal device 30b are electrically connected and separated. Selected. In short, the contact device 40 of the present embodiment constitutes a contact of a single pole switch (so-called one-sided switch) used for single pole single throw provided with one fixed contact 41 and one movable contact 42. A reversing spring 44 made of a coil spring is held between the opening / closing element 43 and the reversing handle 50, and one end of the reversing spring 44 is surrounded by a central piece 43a and both side pieces 43b, 43c of the opening / closing element 43. The other end is housed in the reversing handle 50.
[0040]
A fulcrum protrusion 51 is provided on both side surfaces of the reversing handle 50 in the width direction of the container 1, and each fulcrum protrusion 51 is formed in a shape with a tapered front end. A pair of bearing protrusions 23 projecting forward from the peripheral edge of the opening window 22 are provided on both sides in the longitudinal direction of the cover 20 in the width direction, and are inverted on the opposing surfaces of both bearing protrusions 23. A bearing recess 24 into which the fulcrum protrusion 51 of the handle 50 is inserted is formed. The bearing recess 24 pivotally supports the fulcrum projection 51 at least at the front end portion so as to be swingable. On both end surfaces of the reversing handle 50 in the longitudinal direction, coupling claws 53 for coupling the operation handle 60 to the reversing handle 50 are respectively provided.
[0041]
Note that, at both ends in the longitudinal direction of the cover 20, abutting ribs 25 projecting from the front surface of the cover 20 along the side edges of the both ends of the cover 20 are respectively projected. A mounting claw 26 is projected. Although not described in detail here, the attachment claw 26 is provided to hold the container 1 on the attachment frame by engaging with an attachment hole provided in the attachment frame for the wiring device. When construction is performed in such a manner that a part of the body 1 is embedded, it is easy to join the container body 1 to the mounting frame fixed to the construction surface. The abutment rib 25 comes into contact with the back side of the mounting frame when the container 1 is mounted on the mounting frame. The operation handle 60 is disposed between the two abutment ribs 25, and the operation handle 60 is formed so as not to interfere with the abutment ribs 25 when swinging. Thus, by providing the abutment rib 25 on the cover 20 and providing the attachment claw 26 on the abutment rib 25, it becomes possible to position the operation handle 60 rearward as compared with the case where the abutment rib 25 is not provided. A gap formed between the cover 20 and the operation handle 60 in the construction state becomes difficult to see from the outside.
[0042]
As shown in FIG. 15, the operation handle 60 covers the front surface of the reversing handle 50, and a coupling leg 61 that engages a coupling claw 53 provided on the reversing handle 50 protrudes from the rear surface of the operating handle 60. A leg claw 61a that engages the rear surface of the coupling claw 53 is formed at the front end portion (rear end portion) of the coupling leg 61, and the reversing handle 50 is provided between the pressing projection 62 projecting on the rear surface of the operation handle 60 and the leg claw 61a. As a result, the operation handle 60 is fixed to the inversion handle 50.
[0043]
The operation of the above-described switch will be briefly described below. When the right end of the reversing handle 50 is located behind (lower in the drawing) the left end as shown in FIG. The movable contact 42 is pressed against the fixed contact 41 by the reversing spring 44 and contact pressure is applied. On the other hand, when the left end portion of the operation handle 60 (not shown) is pushed rearward from this state, the front end portion of the reversing spring 44 moves to the right side, so that the reversing spring 44 is rapidly compressed after being compressed and the intermediate portion is located at both end portions. In this state, the open / close element 43 is tilted to the right side, and the movable contact 42 is pulled away from the fixed contact 41.
[0044]
By the way, the electric wire insertion hole 12 described above is formed at a portion corresponding to the space between the screw side terminal plates 33 and 33 and the receiving side terminal plates 31 and 32 of the terminal frames 110a and 100b. When the terminal screw 34 is tightened in a state where the electric wire 2 is inserted, the front end portion of the electric wire 2 is formed between the front end surface 34a of the terminal screw 34 and the holding surfaces 31b and 32b of the main pieces 31a and 32a of the receiving side terminal plates 31 and 32. The electric wire 2 is brought into contact with the main pieces 31a and 32a, the terminal devices 30a and 30b are electrically connected to the electric wire 2, and are mechanically held so that the electric wire 2 is not pulled out of the container body 1. .
[0045]
Operation grooves 15 are formed in portions corresponding to the terminal frames 100 a and 100 b on both side walls in the longitudinal direction of the body 10. The operation groove 15 has a shape such that a tool such as a tip of a flat-blade screwdriver can be inserted into the body 1. When the tool is inserted into the operation groove 15 and the terminal screw 34 is tightened, the end surface of the terminal screw 34 is 34a approaches the holding surfaces 31b and 32b of the main pieces 31a and 31b of the receiving side terminal plates 31 and 32. On the contrary, if the tool is inserted into the operation groove 15 and the terminal screw 34 is loosened while the electric wire 2 is connected to the terminal devices 30a and 30b, the holding surface 31b so that the tip surface 34a of the terminal screw 34 is separated from the electric wire 2. , 32b is increased, the mechanical holding of the electric wire 2 is released, and the electric wire 2 can be pulled out from the container body 1.
[0046]
As an electric wire connected to the terminal devices 30a and 30b in this embodiment, a stranded wire or a single wire can be used, and it can respond to various connection forms. For example, as shown in FIG. 8, a single core wire 2a and a stranded wire 2b may be connected simultaneously, or for example, as shown in FIG. 9, two single core wires 2a may be connected simultaneously. Is possible. Here, since the holding surfaces 31b and 32b of the receiving side terminal plates 31 and 32 facing the tip surface 34a of the terminal screw 34 are arcuate, the strand 2b of the stranded wire is connected to the tip surface 34a of the terminal screw 34 and the terminal plate 31. It is possible to hold the wire 2b so as not to spread between the two.
[0047]
In addition, the clearance gap between the inner peripheral surface of terminal frame 100a, 100b and the side surface of the terminal screw 34 is set smaller than the diameter of the strand 2b of a strand wire, and the front end surface 34a of the terminal screw 34 and the holding surface 31b , 32b, the wire 2b is prevented from being entangled with the terminal screw 34 by being pinched between the inner peripheral surfaces of the terminal frames 100a, 100b and the terminal screw 34. The wire 2b is prevented from being disconnected when the wire 34 is tightened.
[0048]
By the way, as shown in FIG. 10, a pair of coupling protrusions 33d and 33d are formed on both side edges of the main piece 33a of the screw side terminal plate 33 so as to be separated from each other in the electric wire insertion direction. In the main pieces 31a and 32a, coupling holes 38 (see FIGS. 11 and 11) are formed through portions corresponding to the coupling protrusions 33d and 33d. The main piece 33a of the screw side terminal plate 33 is provided with an overhanging piece 33c that protrudes laterally from both side edges around the counter sink 36, and the main pieces 31a, 32a of the receiving side terminal plates 31, 32 are stretched. A positioning hole 37 (see FIG. 11) into which the protruding piece 33c is inserted is provided. In the main piece 33a of the screw side terminal 33, each pair of coupling protrusions 33d, 33d is located on both sides of the protruding piece 33c in the electric wire insertion direction, and the protruding dimension of the protruding piece 33c is the same as that of the coupling protrusion 33d. It is set longer than the protruding dimension.
[0049]
Here, the assembly process of the terminal frame 100a will be described. As shown in FIG. 11 (a), the main piece 31a of the screw side terminal plate 33 before being joined is widened and opened. As shown in FIG. 11 (b), the screw-side terminal plate 33 is received by inserting a part of the protruding piece 33 c of the screw-side terminal plate 33 into the positioning hole 37 of the main piece 31 a of the side terminal plate 31 from the state. Temporarily fixed to the side terminal plate 33 (see FIG. 12), and then, as shown in FIG. 11 (c), the tip side is brought closer so that the main piece 31a of the receiving side terminal plate 31 becomes U-shaped (main piece). 31a is closed), the overhanging piece 33c is inserted into the positioning hole 37, the coupling protrusion 33d is inserted into the coupling hole 38, and then the tip of the coupling protrusion 33d is caulked, whereby the screw side terminal plate 33 and the receiving terminal plate 31 are coupled. Also for the terminal frame 100b, the screw side terminal plate 33 is a common component with the terminal frame 100a, and the shape of the main piece 32a of the receiving side terminal plate 32 is substantially the same as the shape of the main piece 31a. Can be assembled in the same process as the terminal frame 100a.
[0050]
Thus, when the terminal frames 100a and 100b are assembled, the screw-side terminal plate 33 can be temporarily fixed to the receiving-side terminal plates 31 and 32 by using the overhanging piece 37 and the positioning hole 38. The connection work with the terminal boards 31 and 32 is facilitated. In addition, the strength of the counter sink 36 can be increased by providing the protruding piece 37 on the screw side terminal plate 33.
[0051]
By the way, in the terminal frame 100a of this embodiment, as shown in FIG. 7, the above-mentioned wire stopper piece 33b is integrally provided on the screw side terminal plate 33, and the contact holding piece 31d holding the fixed contact 41 is received by the receiving side terminal plate 31. It is provided at the tip of the connecting piece 31c extended from the front end. On the other hand, as shown in FIG. 13, it is conceivable to provide the contact holding piece 31d holding the fixed contact 41 at the tip of the connecting piece 31c extended from the screw side terminal plate 33. In the configuration shown in FIG. When the insertion length of the electric wire 2 is too long, the connecting piece 31c may be deformed and the position of the fixed contact 41 may be shifted. Moreover, as shown in FIG. 14, while the main piece 33a of the screw side terminal board 33 is clamped by the main piece 31a of the receiving side terminal board 31, the structure which extended the electric wire stopper piece 33b from the main piece 33a is also considered. In the configuration shown in FIG. 14, when the insertion length of the electric wire 2 is too long, when the terminal screw 34 is tightened, the main piece 31a is deformed as shown by a two-dot chain line in FIG. There is a problem that it is difficult to take.
[0052]
On the other hand, in the terminal frame 100a of this embodiment, since the insertion depth of the electric wire 2 is regulated by the electric wire stopper piece 33b provided integrally with the screw side terminal plate 33, for example, the insertion length of the electric wire is too long. In this case, the connecting piece 31c and the contact holding piece 31d are not affected by the electric wire 2, and the position of the fixed contact 41 can be prevented from being shifted, and the screw side terminal plate 33 and the receiving side terminal plate 31 can be Since the members are caulked and joined, the screw-side terminal plate 33 is not easily deformed even when the terminal screw 34 is tightened, and is strong against tightening of the terminal screw 34. As a result, the electric wire 2 can be firmly held. it can.
[0053]
In order to attach the above-described switch device to a construction surface such as a wall surface, a plate 9 shown in FIGS. 25 and 26 is used. The plate 9 includes a plate frame 80 that is an attachment frame that holds the container 1 and a decorative plate 90 that covers the plate frame 80.
[0054]
The plate frame 80 is made of synthetic resin and has an insulating property, and the left end portions and the right end portions of the pair of upper and lower frame pieces 83a and 83b are continuously and integrally joined by the horizontal pieces 82, respectively. The opening window 81 which is a rectangular window hole exposing the front surface is formed in a rectangular frame shape having a central portion. On the rear surface side of both side edges along the longitudinal direction of the opening window 81, a strip-shaped fixed beam portion 84 (see FIG. 15) and a movable beam portion 85 (see FIG. 15) are provided so as to face each other. .
[0055]
On the surface facing the opening window 81 in the fixed beam portion 84 and the movable beam portion 85, four attachments as instrument attachment means for engaging with the attachment claws 26 protruding in pairs on both side surfaces of the body 1 are provided. Holding grooves 87a and 87b (see FIG. 15) that are holes are provided at equal intervals. Therefore, when the mounting claw 26 is engaged with the holding grooves 87 a and 87 b in a concave and convex manner, the body 1 can be attached to the plate frame 80 with the front surface of the operation handle 60 exposed from the opening window 81. In addition, the base portion of the fixed beam portion 84 and the movable beam portion 85 is in contact with the abutment rib 25 protruding from the cover 20 of the vessel body 1 so that the vessel body 1 does not fall forward from the plate frame 80. 84d and 85d (see FIG. 15) are formed. In other words, the front surface of the abutment rib 25 of the container body 1 is in contact with the contact portions 84d and 85d, and the rear surface of the mounting claw 26 is locked to the holding grooves 87a and 87b. Worn. Here, the attachment claws 26 of the container 1 are introduced into the holding grooves 87a and 87b from the rear surface side of the plate frame 80 at the respective front end portions of one surface facing the opening window 81 of the fixed beam portion 84 and the movable beam portion 85. At this time, in order to guide each mounting claw 26 to the holding grooves 87a and 87b, guide portions 87c and 87d which are inclined surfaces which are inclined so as to increase the distance from each other toward the distal end side are provided.
[0056]
Therefore, in order to attach the switch body 1 to the plate frame 80, the mounting claw 26, which is inserted from the rear side of the plate frame 80 and protrudes on one side in the longitudinal direction of the body 1, is fixed to the fixed beam portion 84. When the container body 1 is pushed forward with respect to the plate frame 80 while being engaged with the holding groove 87a, the mounting claw 26 protruding from the other side surface of the container body 1 deflects the movable beam portion 85, and the mounting claw 26 can be easily engaged with the holding groove 87b.
[0057]
On the other hand, an instrument removal hole 84c that penetrates the front and back of the plate frame 80 between each pair of adjacent holding grooves 87a is formed in the base of the fixed beam portion 84, and the body 1 is attached to the plate frame 80. In this state, the tip of a screwdriver or a jig dedicated for removal is inserted into the instrument removal hole 84c, and the body 1 is pushed toward the movable beam 85 with the tip of the jig. The movable beam portion 55 can be bent, and the device body 1 can be removed from the plate frame 80 by releasing the engagement state between the holding groove 87a on the fixed beam portion 84 side and the mounting claw 26 of the device body 1. It has become.
[0058]
By the way, the plate frame 80 has two pairs of holding grooves 87a and 87b in the fixed beam portion 84 and the movable beam portion 85, respectively, and the container body 1 has a pair of mounting claws 26 on each side surface. The interval between the mounting claws 26 provided in the vessel body 1 matches the pitch between the holding grooves 87a and 87b adjacent to each other in the fixed beam portion 84 and the movable beam portion 85, and the vessel body 1 shown in FIG. The dimension is set so that up to two plates can be attached to the plate frame 80. That is, the plate frame 80 shown in FIGS. 25 and 26 is for two pieces, and the container 1 can be attached to the two plate frames 80 up to two pieces. Therefore, the vessel 1 having such a size is referred to as a unit size 1.
[0059]
By defining the relative mounting dimensions of the container body 1 and the plate frame 80 as described above, the container body 1 is mounted on the plate frame 80 with an arbitrary number in the range of one to two. Is possible.
[0060]
A box for attaching the plate frame 80 to an embedding box (not shown) embedded in the wall surface in each lateral piece 82 of the plate frame 80 in order to attach the plate frame 80 to which the body 1 is attached to the wall surface or the like. An extending piece 82 a provided with a box hole 88 a through which the screw 110 is inserted is extended. Further, the frame pieces 83a and 83b of the plate frame 80 are provided with screw insertion holes 88b through which screws for directly attaching the plate frame 80 to a construction surface such as a wall surface are inserted.
[0061]
Further, decorative plate locking holes 89 for locking locking protrusions (not shown) protruding from the rear surface of the decorative plate 90 are provided at the four corners of the plate frame 80. The decorative plate 90 can be detachably attached so as to cover the front surface of the plate frame 80 by inserting and locking the locking projections.
[0062]
The decorative plate 90 is formed using an insulating synthetic resin, and has a rectangular front plate 91 that covers the front surface of the plate frame 80, and the rear of the front plate 91 from the periphery to the entire periphery. It is formed in a substantially box shape in which a side wall 92 projecting in a continuous manner is formed integrally. The above-described locking projections for coupling to the plate frame 80 are projected at the four corners on the rear surface side of the front plate 91. Further, an opening window 91 a is provided at the center of the front plate 91 to expose the front surface (operation handle 60) of the container 1 attached to the plate frame 80.
[0063]
The distance between the opposing surfaces of the side wall 92 of the decorative plate 90 is larger than the width dimension of the corresponding portion of the plate frame 50. That is, when the decorative plate 90 is attached to the front side of the plate frame 80 disposed on the construction surface, the plate frame 80 is accommodated inside the decorative plate 90, and the rear edge of the side wall 92 of the decorative plate 90 is the construction surface. Almost abuts. As a result, the abutment surface between the plate frame 80 and the decorative plate 90 does not protrude forward from the construction surface, and the abutment line between the two is hardly visible from the side surface, improving the appearance.
[0064]
By the way, as the operation handle 60, as shown in FIGS. 24 and 25, the operation handle 60 is formed so as to cover the front side of the opening window 81 with two (hereinafter referred to as two operation handles 60). In addition, as shown in FIG. 26, an object formed so as to cover the front side of the opening window 81 with one (hereinafter referred to as one operation handle 60) can be attached to the reversing handle 50. It is like that.
[0065]
Here, each operation handle 60 is provided with a relief portion 668 including a concave portion 668 that prevents the box screw 110 from interfering with the container 1 attached to the plate frame 80 (see FIG. 21). Accordingly, it is possible to avoid the box screw 110 from interfering with the operation handle 60 when the operation handle 60 is operated.
[0066]
Each operation handle 60 is provided with a notch 65 at the rear end edge of the operation handle 60 for removing the operation handle 60 from the reversing handle 50 in a state of being attached to the plate frame 80. Here, the notch 65 is provided at a position corresponding to the connecting leg 61 described above, and even when the container 1 is attached to the plate frame 80 and the operation handle is attached to the reversing handle, a notch driver or the like is provided in the notch. The operating handle 60 can be detached from the reversing handle 50 by inserting a tip portion and applying a force in a direction in which the operating handle 60 is detached from the reversing handle 50.
[0067]
As shown in FIGS. 18 and 20, the reverse assembly preventing rib 55 that restricts the mounting direction of the operating handle 60 to the reversing handle 50 to only the specified direction on the opposing surfaces of the operating handle 60 and the reversing handle 50. , 68 projecting, the mounting direction of the operating handle 60 with respect to the reversing hand 50 can be restricted, and the reverse assembly of the operating handle 60 with respect to the reversing handle 50 can be prevented. Further, since the arrows 57 and 67 that indicate the mounting direction of the operation handle 60 are displayed on the opposing surfaces of the operation handle 60 and the reversing handle 50, the mounting direction of the operating handle 60 to the reversing handle 50 is indicated. It can be easily confirmed (visible).
[0068]
In addition, a guide groove 53 a for guiding the leg claw 61 a of the coupling leg 61 is provided in the coupling claw 53 that is a collar piece in the reversing handle 50. Accordingly, when the operating handle 60 is attached to the reversing handle 50, the leg claw 61a of the coupling leg 61 is guided along the guide groove 53a, so that the operation of attaching the operating handle 60 to the reversing handle 50 is facilitated.
[0069]
By the way, the container body 1 is also attached to the plate frame 80 shown in FIG. 27 provided with three sets of instrument attachment means so that three instrument bodies having the same external dimensions as the container body 1 can be connected and attached. Can do. In other words, the container body 1 is formed in a rectangular frame shape having an opening window 81 as a window hole in the central portion, and has two or three sets of instrument mounting means in one direction. The mounting frame for the embedded wiring device is dimensioned so that it can be connected up to the number of sets of device mounting means of the mounting frame.
[0070]
Further, the two operation handles 60 are formed to have a size enough to cover the opening surface on the front side of the opening window 81 with two. Here, the two operation handles 60 have a pair of connecting legs so that the reversing handles 50 can be attached to and detached from the left and right sides as shown in FIGS. 61 is provided on both the left and right sides. Thus, the operation handle 60 can be shared by the mounting frame having two sets of instrument mounting means and the mounting frame having three sets of instrument mounting means in the one direction. The cost can be reduced as compared with the case where the operation handle 60 is prepared.
[0071]
(Embodiment 2)
In this embodiment, a single-pole double-throw switch (so-called three-way switch) is shown below. In the three-way switch, as shown in FIGS. 28 and 29, three terminal devices 30b, 30c, and 30d are used. The terminal device 30b has the same configuration as the single-pole single-throw switch of Embodiment 1 described above, and uses two terminal devices 30c and 30d instead of the terminal device 30a used for the single-pole single-throw switch. Each terminal device 30c, 30d includes a terminal frame 100c, 100d, and each terminal frame 100c, 100d is formed by connecting the screw side terminal plate 33 and the receiving side terminal plates 45, 46 in the same manner as in the first embodiment. ing. In addition, the same code | symbol is attached | subjected to the component similar to Embodiment 1, and description is abbreviate | omitted.
[0072]
The receiving side terminal plates 45 and 46 have main pieces 45a and 46a formed with holding surfaces 45b and 46b (see FIG. 30) for holding the electric wire between the tip end surfaces 34a of the terminal screws 34, and the main pieces 45a and 45b. The connecting pieces 45c and 46c that are continuously extended from the front end edge and contact holding pieces 45d and 46d that extend from the connecting pieces 45c and 46c and are provided with fixed contacts 41a and 41b at the tip portions, respectively, are provided.
[0073]
The tip portions of the contact holding pieces 45d and 46d of the both terminal devices 30c and 30d are arranged so as to face each other, and the fixed contacts 41a and 41b face each other. The switching element 43 includes movable contacts 42a and 42b on both surfaces in the thickness direction, and the movable contacts 42a and 42b selectively come into contact with the fixed contacts 41a and 41b as the switching element 43 rotates. . That is, the movable contact 42b is separated from the fixed contact 41b while the movable contact 42a is in contact with the fixed contact 41a, and the movable contact 42a is separated from the fixed contact 41a while the movable contact 42b is in contact with the fixed contact 41b.
[0074]
Here, since the distance between the main piece 46a and the contact holding piece 46d is relatively large in the receiving side terminal plate 46 of the terminal device 30d, the holding rib 13 is attached from the side edge of the connecting piece 46c as shown in FIG. A pair of protruding pieces 46e are provided so as to be sandwiched. For this reason, it is possible to prevent rattling of the terminal frame 100d due to the reaction force of the electric wire when tightening the terminal screw 34, and it is possible to prevent the position of the fixed contact 41b from shifting, and thus it is possible to obtain a stable contact pressure. become. When the receiving terminal plate 46 as shown in FIG. 32 without the protruding piece 46e is used, the contact holding piece 46d is lifted forward (in the direction of the arrow in the figure) by the reaction force of the electric wire. There is a risk.
[0075]
The terminal devices 30c and 30d are arranged on the same side in the longitudinal direction of the body 10 (left side in FIG. 30), and the body 10 is provided with an operation groove 15 corresponding to the terminal screw 34 of the terminal devices 30c and 30d. Yes.
[0076]
By the way, as shown in FIGS. 33 and 34, a position indicator lamp 71 made of a neon lamp is arranged, and a through hole 52 for transmitting light from the position indicator lamp 71 at one end portion in the longitudinal direction of the reversing handle 50 is provided. You may use what was provided. The position indicator lamp 71 is inserted between the terminal device 30a and the terminal device 30b through a contact 47 made of a metal plate having a shape as shown in FIGS.
[0077]
In such a case, a contactor 47 made of a conductive metal plate may be coupled to the wire stopper piece 33b of each screw-side terminal plate 33. Each contact 47 is provided with elasticity so as to be elastically contacted with the circuit board on which the position indicator lamp 71 is mounted, and the contactor 47 is always elastically contacted with the circuit board regardless of the swinging of the reversing handle 50. . A series circuit of a position indicator lamp 71 and a resistor (not shown) is mounted on the circuit board, and a contactor 47 contacts each end of the series circuit. This type of three-way switch is often used to turn on / off stair lights, and a three-way switch is arranged on each of the upper and lower floors to turn on / off the stair lights either on the upper or lower floor. Can also be operable. Therefore, if a series circuit of the position indicator lamp 71 and the resistor is inserted between the fixed contacts 41a and 41b, the position indicator lamp 71 can be turned on when the staircase lamp is turned off. Since the connection relationship of this type of circuit is well known, description thereof is omitted. The other configuration of the three-way switch is the same as that of the single-pole single-throw switch.
[0078]
Here, the contact piece 47 is provided with extending pieces 48 extending rearward from both side edges at one end portion in the longitudinal direction, and mounting protrusions 33e protruding from both side edges of the wire stopper piece 33b described above extend. The contact 47 and the screw side terminal plate 33 are coupled by engaging with an engagement groove 49 provided in the installation piece 48. Here, the mounting protrusion 33e is formed with an inclined surface 33f that reduces the protruding amount from the wire stopper piece 33b toward the contact 47, so that the contact 47 serving as an energization path to the position indicator lamp 71 is assembled at the time of assembly. The screw side terminal plate 33 can be easily coupled.
[0079]
By the way, when the reversing handle 50 provided with the position indicator lamp 71 is used, as the operation handle 60, the light of the position indicator lamp 71 is displayed on the rear surface of the operation handle 60 as shown in FIGS. 33 to 35. A lens 64 that guides light to the unit 63 may be disposed on the rear surface of the operation handle 60. Here, the lens 64 is formed to have a size that partially overlaps the position indicator lamp 71 even when the reversing handle 50 is attached to either of the left and right sides (that is, it corresponds to the position indicator lamp 71). Therefore, even if the reversing handle 50 is attached to either of the left and right sides in the left-right direction in the two operation handles 60, the light of the position indicator lamp 71 is displayed on the operation handle 60. The light can be guided to the part 63.
[0080]
Incidentally, in the terminal devices 30a, 30b, 30c, and 30d, as shown in FIGS. 38 to 41, the positioning pieces 37 and the coupling holes 38 are provided in the main pieces 31a, 32a, 45a, and 46a, and the screw side terminal plate 33 is provided. Can be made common, so that the cost can be reduced.
[0081]
【The invention's effect】
The invention of claim 1 is a switch in which a terminal device integrally including a fixed contact that constitutes a contact device together with a movable contact is housed in a container body, and the terminal device includes an annular terminal frame attached to the container body, A terminal screw that is screwed into a screw hole penetrating the peripheral wall of the terminal frame and that holds the electric wire between the terminal frame and the terminal frame. Is formed with a holding surface that is curved so that the cross section along the opening surface of the terminal frame swells away from the tip surface of the terminal screw. The holding part is formed with a holding surface that is curved so that the cross section along the opening surface of the terminal frame swells away from the tip surface of the terminal screw, so that the core wire is a single wire, and the core wire is a stranded wire. Regardless of the diameter or type of a certain wire, etc. Even when using a combination of wires and dissimilar wires, the wires can be held with sufficient strength. For example, when a single-core wire and a stranded wire are connected simultaneously to a single terminal frame There is an effect that it is possible to cope with various connection forms such as when connecting two electric wires having a single core wire to one terminal frame.
[0082]
In the invention of claim 1, the end Child frame is ,Right Screw side terminal board with through holes And keep It is formed by caulking and joining two members to the receiving terminal board on which the holding surface is formed , Electric A wire stopper piece that regulates the insertion depth of the wire is integrated with the screw-side terminal plate. , Solid Contact holding piece holding constant contact Received Since the insertion depth of the electric wire is regulated by the electric wire stopper integrated with the screw side terminal plate, the insertion length of the electric wire is long. In such a case, the connecting piece and the contact holding piece are not affected by the electric wire, and the position of the fixed contact can be prevented from shifting, and the screw side terminal plate and the receiving side terminal plate have two members. The screw-side terminal plate is not easily deformed even if the terminal screw is tightened and is strong against tightening the terminal screw. Because As a result, there is an effect that the electric wire can be firmly held.
[0083]
Claim 2 The invention of claim 1 is the invention of claim 1, Screw side terminal board The counter sink is integrally formed on the outer periphery of the periphery of the screw hole. If you do not have a counter sink Compared to the above, the amount of screwing between the terminal frame and the terminal screw can be increased, and the terminal screw can be firmly tightened. As a result, there is an effect that the electric wire can be firmly held.
[0084]
Claim 3 The invention of claim 2 In the invention, the screw-side terminal plate is provided with a protruding piece that protrudes laterally from both side edges around the counter sink, and the receiving-side terminal plate is provided with a positioning hole into which the protruding piece is inserted. Therefore, when the terminal frame is assembled, the screw-side terminal plate can be temporarily fixed to the receiving-side terminal plate by using the projecting piece and the positioning hole, and the screw-side terminal plate and the receiving-side terminal plate are joined. And the strength of the counter sink can be increased.
[0085]
Claim 4 In the invention of claim 1, in the invention of claim 1, the terminal frame is , The above body A pair of projecting pieces sandwiching ribs projecting from the inner surface of the terminal are provided on the connecting piece, so that the terminal frame can be prevented from rattling due to the reaction force of the electric wire when the terminal screw is tightened. Since it is possible to prevent the displacement, it is possible to obtain a stable contact pressure.
[0086]
Claim 5 According to the invention of claim 1, there is provided a reversing handle for opening and closing the contact device mounted on the device in a swingably supported manner on the device, and an indicator lamp attached to the reversing handle. The terminal frame is , Both side edges of the above wire stopper piece A mounting protrusion is provided on the contact piece and a screw side by engaging the mounting protrusion with an engaging portion provided on an extending piece extending from a contact made of a metal plate that serves as an energization path to the indicator lamp. The terminal plate is connected, and the mounting projection has an inclined surface that reduces the amount of protrusion from the wire stopper piece toward the contact side. There is an effect that it can be easily combined with the plate.
[0087]
Claim 6 The invention according to claim 1 is the invention according to claim 1, wherein the container body is box-shaped, and includes a synthetic resin body having a front opening and a cover disposed on the front side of the body, in the width direction of the body. A pair of assembly protrusions are provided on both side surfaces spaced apart in the longitudinal direction of the body. Assembly tongues project rearward from the rear edge of the cover, and assembly protrusions are provided in assembly holes provided in the assembly tongues. The body and the cover are coupled by engaging, and the width of the assembly protrusion in the longitudinal direction of the body is different on both sides of the body, so that the cover and the body can be easily coupled during assembly. Moreover, there is an effect that the reverse assembly of the cover and the body can be prevented.
[0088]
Claim 7 The invention according to claim 1 is the invention according to claim 1, wherein the container body is box-shaped, and includes a synthetic resin body having a front opening and a cover disposed on the front side of the body, in the width direction of the body. A pair of assembly protrusions are provided on both side surfaces spaced apart in the longitudinal direction of the body. Assembly tongues project rearward from the rear edge of the cover, and assembly protrusions are provided in assembly holes provided in the assembly tongues. Engaging the body and the cover, providing a rib on one of the opposing surfaces of the body and the cover at both ends in the longitudinal direction, and providing a recess in which the rib fits on the other. Since the ribs have different widths, there is an effect that the cover and the body can be easily coupled at the time of assembly, and the reverse assembly of the cover and the body can be prevented.
[0089]
Claim 8 The invention of claim 6 In the invention, the ribs are provided on one of the opposing surfaces of the body and the cover at both ends in the longitudinal direction, the recesses are fitted on the other, and the widths of the ribs are different at both ends. There is an effect that the reverse assembly of the cover and the body can be prevented more reliably.
[0090]
Claim 9 The invention according to claim 1 is characterized in that, in the invention of claim 1, a reversing handle that is mounted on the container in a swingably supported manner on the container and that opens and closes the contact device, and is detachably attached to the front side of the reversing handle. An operation handle to be attached and an attachment portion for attaching to an attachment frame for an embedded wiring device, and a notch for removing the operation handle from the reversing handle when attached to the attachment frame. Since the instrument is attached to the mounting frame and the operating handle is attached to the reversing handle, the tip of a flathead screwdriver or the like is inserted into the notch and the operating handle is removed from the reversing handle. There is an effect that the operating handle can be detached from the reversing handle by applying a force in the direction of coming off.
[0091]
Claim 10 The invention of claim 9 In the present invention, the reverse assembly prevention rib for restricting the mounting direction of the operating handle to the reversing handle to only the specified direction is provided on each of the opposing surfaces of the operating handle and the reversing handle. The mounting direction can be restricted, and the reverse assembly of the operation handle with respect to the reversing handle can be prevented.
[0092]
Claim 11 The invention of claim 9 In this invention, since the mark indicating the mounting direction of the operating handle is displayed on the opposing surfaces of the operating handle and the reversing handle, the mounting direction of the operating handle to the reversing handle can be easily confirmed. .
[0093]
Claim 12 The invention of claim 9 In the invention of claim 1, the container body is an embedded wiring having a lateral dimension of a rectangular frame shape having a window hole in the central portion and having two to three sets of instrument mounting means in one direction. The size of the operation handle is such that two opening covers on the front side of the window hole are covered with the mounting frame for the device, and the operation handle is formed to have a size that can be connected to the number of sets of the device mounting means of the mounting frame. When the one direction is the left-right direction, the reversing handle is detachable on both the left and right sides, so that the mounting frame having two sets of instrument mounting means in the one direction and three sets of instrument mounting means The above-described operation handle can be used in common with the mounting frame provided with the above, and there is an effect that the cost can be reduced as compared with the case where a dedicated operation handle is prepared for each mounting frame.
[0094]
Claim 13 The invention of claim 9 In the present invention, a coupling leg that is locked to a part of the hook formed on the reversing handle protrudes on the rear surface of the operation handle, and the guiding leg is guided to the hook on the reversing handle. Since the groove is provided, the coupling leg is guided along the guide groove when the operating handle is attached to the reversing handle, so that the operation of attaching the operating handle to the reversing handle is facilitated. is there.
[0095]
Claim 14 The invention of claim 12 In the present invention, the reversing handle is provided with an indicator lamp, and a lens for guiding the light of the indicator lamp to the display portion of the operator handle is disposed on the rear surface of the operator handle. The operation handle formed so as to cover the opening surface on the front side of the window hole is reversed to either the left or right side in the left-right direction. Even when the handle is attached, the light of the indicator lamp can be guided to the display portion of the operation handle.
[0096]
Claim 15 The invention of claim 9 In the invention, the mounting frame is formed with a mounting hole through which a box screw for mounting to an embedded box embedded in a construction surface is formed, and the operation handle has a short side of the container body. In the rear end edges of both side walls in the direction, there is provided a relief portion comprising a recess that prevents the interference of the box screw in a state in which the vessel is attached to the attachment frame, so the vessel is attached to the attachment frame. By providing the operating handle with a relief portion formed of a recess that prevents interference of the box screw in the attached state, it is possible to avoid the box screw from interfering with the operating handle when the operating handle is operated. There is an effect.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a first embodiment of the present invention.
FIG. 2 is a cross-sectional view of the above.
FIG. 3 is a front view of the above-described state with a cover removed.
FIG. 4 is an explanatory diagram of a main part of the above.
FIG. 5 is an explanatory diagram of a main part of the above.
6A is a rear view of a cover, and FIG. 6B is a front view of a body.
FIG. 7 is a bottom view of the terminal device used in the above.
FIG. 8 is a front view showing a usage example of the terminal device used in the above, in a state where electric wires are connected.
FIG. 9 is a front view showing a usage example of the terminal device used in the above, in a state where electric wires are connected.
10A and 10B show a screw side terminal plate using the same as above, FIG. 10A is a bottom view, FIG. 10B is a side view, and FIG. 10C is a front view.
FIG. 11 is an explanatory diagram of an assembly process of the terminal device used in the above.
FIG. 12 is an explanatory diagram of an assembly process of the terminal device used in the above.
FIG. 13 is a bottom view showing a comparative example of the terminal device used in the above.
FIG. 14 is a bottom view showing a comparative example of the terminal device used in the above.
FIG. 15 is a cross-sectional view showing a state in which the above is attached to an attachment frame.
FIG. 16 is an explanatory view of how to attach the operation handle to the reversing handle in the same as above.
FIG. 17 is a perspective view of one operation handle used for the above.
FIG. 18 is an explanatory view of how to attach the reversing handle to one operation handle in the same as above.
FIG. 19 is a perspective view of two operation handles used for the above.
FIG. 20 is an explanatory view of how to attach the reversing handle to the two operating handles in the above.
FIG. 21 is an explanatory diagram of relevant parts of the same.
FIG. 22 is an explanatory view of how to attach the reversing handle to the two operation handles in the above.
FIG. 23 is an explanatory view of how to attach the reversing handle to the two operating handles in the same as above.
FIG. 24 is a front view showing a state in which the switch is attached to the plate frame.
FIG. 25 is an exploded perspective view when two of the above are attached to the plate frame.
FIG. 26 is an exploded perspective view when one of the above is attached to the plate frame.
FIG. 27 is a front view showing a state in which the switch is attached to another plate.
FIG. 28 is an exploded perspective view showing the second embodiment.
FIG. 29 is a cross-sectional view of the above.
FIG. 30 is a front view showing a state where the cover is removed.
FIG. 31 is an explanatory diagram of relevant parts of the same.
FIG. 32 is an explanatory diagram of relevant parts of a comparative example of the same.
FIG. 33 is a cross-sectional view of an essential part in another configuration example same as above.
FIG. 34 is an explanatory view of a mounting position of the reversing handle to two operation handles in another configuration example same as above.
FIG. 35 is a bottom view of the operation handle in another configuration example same as above.
36A and 36B show a contact used in another configuration example of the above, where FIG. 36A is a front view and FIG. 36B is a bottom view.
FIG. 37 is a diagram illustrating the relationship between the contact and the terminal device in another configuration example same as above.
38A and 38B show the receiving terminal plate of the above, where FIG. 38A is a front view and FIG. 38B is a bottom view.
FIG. 39 shows the receiving-side terminal plate of the same, (a) is a front view and (b) is a bottom view.
FIG. 40 shows the receiving terminal plate of the same, (a) is a front view and (b) is a bottom view.
41A and 41B show the receiving terminal plate of the above, where FIG. 41A is a front view and FIG. 41B is a bottom view.
FIG. 42 is a cross-sectional view showing a conventional example.
FIG. 43 is a cross-sectional view showing a state in which the above is attached to the attachment frame and an operation handle is attached.
44 is an explanatory diagram of how to attach the operation handle in the same as above. FIG.
FIG. 45 is a cross-sectional view showing another conventional example.
FIG. 46 is an explanatory diagram of an applicable electric wire.
[Explanation of symbols]
1 body
12 Wire insertion hole
30a, 30b terminal device
35 Screw hole
36 counter sync
100a, 100b Terminal frame
45,46 terminal board

Claims

A switch in which a terminal device integrally including a fixed contact that constitutes a contact device together with a movable contact is housed in a container, and the terminal device is provided in an annular terminal frame attached to the container and a peripheral wall of the terminal frame. A terminal screw that is screwed into the screw hole and connected and held between the terminal frame and the terminal frame. A holding surface that is curved so that its cross section swells away from the tip surface of the terminal screw is formed, and the terminal frame is a receiving side on which a screw side terminal plate with a screw hole penetrated and a holding surface are formed. Formed by caulking and joining two members with the terminal plate, a wire stopper piece that regulates the insertion depth of the electric wire is integrally provided on the screw side terminal plate, and the contact holding piece holding the fixed contact is received by the receiving side terminal plate this formed by providing the distal end of the extended connection piece from Switch according to claim.

2. The switch according to claim 1 , wherein the screw-side terminal plate has a counter sink integrally formed on the outer peripheral portion of the peripheral edge of the screw hole .

The screw-side terminal plate is provided with a protruding piece that protrudes laterally from both side edges around the counter sink, and the receiving-side terminal plate is provided with a positioning hole into which the protruding piece is inserted. The switch according to claim 2, wherein

The terminal frame, the switch according to claim 1, characterized by being provided with a pair of protruding pieces sandwiching the rib projecting from the inner surface of the instrument body to said connecting piece.

A reversing handle that is mounted on the body in a swingably supported manner on the body and that opens and closes the contact device; and an indicator lamp attached to the reversing handle, wherein the terminal frame includes the wire stopper piece. Mounting protrusions are provided on both side edges of the contact lamp, and the contact protrusions by engaging the mounting protrusions with the engaging portions provided on the extension pieces extended from the contact pieces made of a metal plate serving as an energization path to the indicator lamp. 2. The switch according to claim 1 , wherein a screw-side terminal plate is coupled, and an inclined surface is formed on the mounting protrusion so as to reduce a protruding amount from the wire stopper piece toward the contact side .

The container is box-shaped, and consists of a synthetic resin body with a front opening and a cover disposed on the front side of the body, and is spaced apart in the longitudinal direction of the body on both sides in the width direction of the body. Each pair of assembly protrusions protrudes from the rear edge of the cover, and an assembly tongue piece protrudes rearward. The assembly protrusion engages with an assembly hole provided in the assembly tongue piece, so that the body and the cover are connected. 2. The switch according to claim 1, wherein the switches are combined, and the width of the assembly protrusion in the longitudinal direction of the body is different on both side surfaces of the body .

The container is box-shaped, and consists of a synthetic resin body with a front opening and a cover disposed on the front side of the body, and is spaced apart in the longitudinal direction of the body on both sides in the width direction of the body. Each pair of assembly protrusions protrudes from the rear edge of the cover, and an assembly tongue piece protrudes rearward. The assembly protrusion engages with an assembly hole provided in the assembly tongue piece, so that the body and the cover are connected. A rib is provided on one of the opposing surfaces of the body and the cover at both ends in the longitudinal direction, and a recess in which the rib is fitted is provided on the other, and the width of the rib is varied at both ends. The switch according to claim 1.

A rib is provided on one of the opposing surfaces of the body and the cover at both ends in the longitudinal direction, a recess for fitting the rib is provided on the other, and the width of the rib is different at both ends. Item 7. The switch according to item 6 .

A reversing handle that is pivotally supported by the body and that opens and closes the contact device, an operation handle that is detachably attached to the front side of the reversing handle, and an embedded wiring An attachment portion for attaching to the attachment frame for the instrument, and a notch for removing the operation handle from the reversing handle in a state of being attached to the attachment frame is provided at the rear edge of the operation handle. The switch according to claim 1 .

10. The switch according to claim 9 , further comprising a reverse assembly preventing rib that restricts a mounting direction of the operating handle to the reversing handle only in a specified direction on each of the opposing surfaces of the operating handle and the reversing handle. .

The switch according to claim 9, wherein a mark that indicates the mounting direction of the operation handle is displayed on the opposing surfaces of the operation handle and the reversing handle.

The container body has an outer dimension in the short direction, which is formed in a rectangular frame shape having a window hole in the center, and has two or three sets of appliance attachment means in one direction. The operation handle is formed to have a size that can cover the opening surface on the front side of the window hole with two pieces so that it can be connected to the frame up to the number of sets of instrument mounting means of the mounting frame. 10. The switch according to claim 9, wherein the reversing handle is detachable on both the left and right sides when the one direction is the left-right direction .

On the rear surface of the operation handle, a coupling leg that is locked to a part of the hook formed on the reversing handle is projected, and a guide groove for guiding the coupling leg is provided on the hook on the reversing handle. switch according to claim 9 characterized by comprising Te.

The reversing handle is provided with an indicator lamp, and a lens for guiding the light of the indicator lamp to the display portion of the operating handle is disposed on the rear surface of the operating handle, and the lens corresponds to the indicator lamp on each of the left and right sides. The switch according to claim 12 , wherein the switch is formed to have a size straddling the base .

The mounting frame is formed with a mounting hole through which a box screw for mounting to an embedded box embedded in a construction surface is inserted, and both side walls of the operation body in the short direction of the container body The switch according to claim 9 , wherein an escape portion including a concave portion for preventing interference of a box screw is provided at a rear end edge of the device body when the container is attached to the attachment frame .