JP4052170B2

JP4052170B2 - Fast connection terminal device

Info

Publication number: JP4052170B2
Application number: JP2003114755A
Authority: JP
Inventors: 稔本田; 直樹金本; 常弘北村; 安弘住野
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 2003-04-18
Filing date: 2003-04-18
Publication date: 2008-02-27
Anticipated expiration: 2023-04-18
Also published as: JP2004319391A

Description

【０００１】
【発明の属する技術分野】
本発明は、スイッチやコンセントのような配線器具の器体に収納されて電線を接続する速結端子装置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が広く用いられている。この種の速結端子としては、図１９に示すように、器体２００に収納され電線挿入孔２０１を通して器体２００に導入された電線１０１に接触する端子板２０２と、端子板２０２との間で電線を挟持する鎖錠ばね２０３とを備えるものが知られている（例えば、特許文献１参照）。鎖錠ばね２０３は板ばねであって、鎖錠ばね２０３に設けた接触片２０３ａおよび鎖錠片２０３ｂと端子板２０２との間に電線１０１を挟持することによって電線１０１を保持するように形成されている。つまり、器体２００に設けた電線挿入孔２０１を通して電線１０１を器体２００に導入すると、電線１０１が接触片２０３ａおよび鎖錠片２０３ｂを端子板２０２から引き離す向きに撓ませ、接触片２０３ａおよび鎖錠片２０３ｂに生じるばね力によって電線１０１が端子板２０２と鎖錠片２０３ｂとの間に挟持されるように構成されている。ここに、電線１０１が端子板２０２と接触片２０３ａおよび鎖錠片２０３ｂとの間に挟持された状態では、接触片２０３ａおよび鎖錠片２０３ｂの端縁が電線１０１に弾接し、電線１０１の一部に鎖錠片２０３ｂが食い込むことによって電線１０１の抜け止めがなされる。このように、電線１０１を電線挿入孔２０１に挿入するだけで端子板２０２に電線１０１が接触した状態で保持されるから、端子ねじを用いて電線１０１を接続する構造に比較すると電線１０１の結線作業が容易になる。
【０００３】
ここで、図２０に示すように器体２００の後壁には操作孔２０４が貫設され、この操作孔２０４の奥側における器体２００の内部に解除釦２０５が収納配置される。図２１に示すように、解除釦２０５は鎖錠ばね２０３の横に配置され、鎖錠ばね２０３の鎖錠片２０３ｂの後面側に当接する押し片２０５ａが側面から突出する形状を有する。操作孔２０４はマイナスドライバの先端部のような工具２１０が挿入可能となる形状を有し、工具２１０を操作孔２０４に挿入して解除釦２０５を前方に押圧すると、鎖錠片２０３ｂが押し片２０５ａから押圧力を受けることにより電線１０１から離れる向きに撓むようにしてある。したがって、電線１０１を接続した状態で操作孔２０４に工具を挿入して解除釦２０５を押圧すれば、鎖錠片２０３ｂが電線１０１から離れるように撓んで電線１０１の機械的保持が解除され、電線１０１を器体２００から引き抜くことが可能になる。
【０００４】
【特許文献１】
特開平１１−１８５９０５号公報（段落００１４、図１）
【０００５】
【発明が解決しようとする課題】
ところで上述のような従来の速結端子装置では、鎖錠片２０３ｂの長さが短いほど大きな反力が得られて電線１０１の保持力が大きくなるが、解除釦２０５により鎖錠片２０３ｂを撓ませる力が大きくなり、反対に鎖錠片２０３ｂの長さが長いほど解除釦２０５により鎖錠片２０３ｂを撓ませる力が小さくて済むが、鎖錠片２０３ｂの反力が小さくなって電線１０１の保持力が小さくなってしまうため、電線の保持力の向上と解除操作時の操作力の低減を両立することが困難であった。
【０００６】
本発明は上記事情に鑑みて為されたものであり、その目的は、電線の保持力の向上と解除操作時の操作力の低減を両立することが可能な速結端子装置を提供することにある。
【０００７】
【課題を解決するための手段】
請求項１の発明は、上記目的を達成するために、配線器具の器体に設けた電線挿入孔を通して前記器体に導入される電線を結線する速結端子装置であって、ばね性を有する金属板を両端部が重なり合うように対向して折り曲げてなる端子板を備え、前記端子板の一方の端部に電線と接触する接触片が一体に設けられ、且つ他方の端部に接触片側へ突出する鎖錠片を設け、前記接触片にほぼ平坦な面を有して電線に弾接する接触部と、電線の挿入方向に沿った接触部の両側において電線を押圧する一対の押圧部とが設けられ、前記鎖錠片には、電線を接触部側へ押圧するとともに電線の一部に食い込んで抜け止めする鎖錠部と、鎖錠部よりも先方へ突出する受け部とが先端に設けられてなり、前記接触部が設けられた端子板の一方の端部と鎖錠片が設けられた端子板の他方の端部とが、器体内に導入される電線から離れる向きに撓み可能であり且つ接触片の電線挿入孔から遠い側の先端部よりも電線挿入孔に近い側の後端部が電線に近付く向きに傾斜するように前記端子板が器体内に収納されるとともに、前記受け部を押し動かして前記鎖錠片を撓ませることにより電線に食い込んだ鎖錠部を電線から引き離して鎖錠部による鎖錠状態を解除する解除手段を備えたことを特徴とする。
【０００８】
請求項２の発明は、請求項１の発明において、複数の前記端子板、接触片、鎖錠片が一体に形成されたことを特徴とする。
【０００９】
請求項３の発明は、請求項１又は２の発明において、電線の挿入方向と直交する方向における前記鎖錠片の幅よりも前記接触片の幅が狭くされたことを特徴とする。
【００１０】
請求項４の発明は、請求項１又は２又は３の発明において、前記受け部は、先端が前記接触片よりも外側に突出しない寸法に形成されたことを特徴とする。
【００１１】
請求項５の発明は、請求項２の発明において、前記複数の受け部が隣接して設けられるとともに他方の受け部に向かって突片が延設されたことを特徴とする。
【００１２】
請求項６の発明は、請求項１の発明において、前記受け部と前記鎖錠片との連結部位が該受け部の他の部位よりも幅狭に形成されたことを特徴とする。
【００１３】
請求項７の発明は、請求項１の発明において、前記受け部の厚みが鎖錠片の厚みよりも小さく設定されたことを特徴とする。
【００１４】
【発明の実施の形態】
以下、本発明に係る速結端子装置をコンセントの端子部に適用した実施形態について図面を参照して詳細に説明する。但し、配線器具はコンセントに限定されるものではなく、例えばスイッチなどのコンセント以外の配線器具にも本発明の技術思想が適用可能であることは言うまでもない。
【００１５】
（実施形態１）
図１〜図３に示すように、器体１は耐トラッキング性に優れた熱硬化性合成樹脂を用いて前面が開放された直方体状に形成されたボディ１０と、同じく耐トラッキング性に優れた熱硬化性合成樹脂を用いて後面が開放された直方体状に形成されたカバー２０とを結合することにより形成される。
【００１６】
ボディ１０は長手方向の中間部に設けた一対の仕切壁１２により内部空間が２分されている。また、図５に示すようにカバー２０内にも仕切壁２０ａが形成され、ボディ１０とカバー２０とを結合するとボディ１０の一対の仕切壁１２の間にカバー２０の仕切壁２０ａが嵌合されることによって器体１の内部空間が独立した２室に分割される。
【００１７】
ボディ１０内において仕切壁１２を介して形成された各収納室１３には、プラグの栓刃を受ける刃受３１がそれぞれ収納される。各刃受３１は、図７に示すように互いに対向する先端部にて栓刃を挟持する一対の刃受ばね３２と、両刃受ばね３２の一方の側面同士を連続一体に結合するコ字状の連結片３４と、連結片３４より突出し両刃受ばね３２の前記側面に対向する刃受ばね３３とを備える。また、連結片３４には円筒形の４つの突起３４ａが列設されており、各一対の突起３４ａにそれぞれ後述する端子板４１がかしめ固定される。
【００１８】
端子部４０は、端子板４１並びに解除釦６０で構成される。端子板４１は、図８（ａ）に示すように略Ｌ字形の主片４２と、主片４２の幅細の一端側から後方（図８（ｂ）における下方、以下同じ）へ垂下された接触片４３と、主片４２の幅太の他端側から後方へ垂下された略Ｊ字形の鎖錠片４４と、鎖錠片４４の側端縁から側方へ突出する固定片４５とを有し、弾性を有する帯状の金属板を加工して接触片４３の先端部と鎖錠片４４の先端部が交差するように折り曲げて一体に形成される。接触片４３にはほぼ平坦な面を有して電線に弾接する接触部４３ａと、電線の挿入方向に沿った接触部４３ａの両側において電線を押圧する一対の押圧部４３ｂ，４３ｃが設けられている。また、接触片４３に対して内側に位置する鎖錠片４４には、電線を接触部４３ａの方へ押圧するとともに電線の一部に食い込んで抜け止めする鎖錠部４４ａと、鎖錠部４４ａよりも接触片４３に近づく向きに突出する受け部４４ｃとが先端に並設され、鎖錠部４４ａよりも後方の部位に電線（接触片４３）から離れる向きに凸となる曲げ部４４ｂが設けられている。なお、図８（ｃ）に示すように鎖錠部４４ａが接触片４３に対向するとともに受け部４４ｃが接触片４３と対向しないように接触片４３の幅寸法が鎖錠片４４の幅寸法のおよそ半分に設定されている。さらに、固定片４５には刃受３１の連結片３４に列設されている一対の突起３４ａが挿通される挿通孔４５ａが貫設されており、これら一対の挿通孔４５ａに挿通した突起３４ａをかしめることで刃受３１の連結片３４に固定片４５が固定される。そして、一対の刃受ばね３２とそれぞれ隣り合うように連結片３４に固定された一対の端子板４１と刃受３１からなる刃受ブロック３０がボディ１０の各収納室１３に収納される。
【００１９】
ボディ１０の各収納室１３の底壁には接触片４３と鎖錠片４４の間に電線を導入することができるように一対の電線挿入孔１１が貫設されている。図１０に示すように、この電線挿入孔１１を通して接触片４３と鎖錠片４４の間に電線１０１を挿入すると、鎖錠片４４の鎖錠部４４ａが電線１０１に食い込むことによって電線１０１が抜け止めされるとともに鎖錠片４４のばね力によって電線１０１が接触片４３の接触部４３ａに弾接し、さらに電線１０１は一対の押圧部４３ｂ，４３ｃによって鎖錠片４４の方へ押圧され、鎖錠部４４ａと一対の押圧部４３ｂ，４３ｃの押圧力が均衡して電線１０１が狭持される。但し、主片４２に近い方の押圧部４３ｃは電線１０１と当接する面を面取りして接触面積を増やしている。
【００２０】
ところで、従来例における速結端子は端子板２０２ａと鎖錠ばね２０３で構成されており、端子板２０２ａがばね性を有しない金属材料で形成されていた。このため、図２１（ａ）に示すように電線１０１が端子板２０２ａ及び鎖錠ばね２０３に対して真っ直ぐに正規の状態で挿入された場合には端子板２０２ａと電線１０１の接触面積が十分に確保されるが、同図（ｂ）に示すように電線１０１が端子板２０２ａ及び鎖錠ばね２０３に対して傾いて挿入された場合には端子板２０２ａと電線１０１の接触面積が減少してしまう虞があった。これに対して本実施形態の端子部４０では、従来の端子板２０２ａに相当する接触片４３と、従来の鎖錠ばね２０３に相当する鎖錠片４４とがばね性を有する金属板からなる端子板４１に一体に形成されているため、例え電線１０１が傾いて挿入されたとしても、接触片４３がばね性を持つために電線１０１の傾きに追従することが可能であり、同じくばね性を有する鎖錠片４４によって電線１０１が接触片４３の方へ押圧されることで電線１０１の挿入状態に関わらず端子板４１と電線１０１の接続状態を安定させることができる。
【００２１】
一方、端子板４１とともに端子部４０を構成する解除釦６０が各収納室１３に配設される。この解除釦６０は合成樹脂成型品からなり、図１及び図９に示すように棒状の操作部６１の両端部からそれぞれ同一の方向に一対の連結部６４，６４が突出し、各連結部６４，６４の先端部分が架橋部６６により連結されて全体が略ロ字型に形成されている。また、架橋部６６の両端部からは連結部６４，６４と反対方向に一対の押動部６３，６３が突設され、架橋部６６の中央部からは押動部６３と略平行に腕部６２が突設されるとともに腕部６２の突出方向に略直交し且つ連結部６４と反対の方向へ支持部６５が突設されている。さらに腕部６２の先端には、後述するようにボディ１０に設けられた軸受け台１４に摺動自在に載置される円柱状の軸部６２ａが、その軸方向が架橋部６６の長手方向と平行となるように設けられている。そして、後述するようにカバー２０に設けられた固定リブ２８に支持部６５が当接することで軸受け台１４に載置された状態で回動自在に軸部６２ａが支持される。ここで、支持部６５における軸部６２ａと反対側の側面６５ａは円柱面に形成されており、固定リブ２８の先端には支持部６５の側面６５ａに摺接する曲面（円柱面）２８ａが形成されている。
【００２２】
一方、ボディ１０の長手方向の両側面には各収納室１３と通じる縦溝１５が各一対ずつ並設されており、解除釦６０は縦溝１５を通して連結部６４並びに操作部６１がボディ１０の外に露出され、一対の押動部６３，６３が端子板４１の鎖錠片４４における受け部４４ｃと対向し（図１２参照）、収納室１３内に設けられた軸受け台１４に軸部６２ａを載置するとともに支持部６５をカバー２０の固定リブ２８の先端に当接することにより、軸部６２ａを支点に器体１の前後方向（図１における上下方向）に沿って回動自在に各収納室１３，１３に配設される（図３参照）。ここで本実施形態においては、図１３に示すように腕部６２の後面側に軸受け台１４を逃がすための逃がし部６２ｂが凹設されている。
【００２３】
而して、端子部４０に接続された電線を引き抜くには、縦溝１５，１５を通して器体１の側面に露出している操作部６１を指で押し上げるように操作すればよい。すなわち、図１４（ｂ）に示すように操作部６１を前方（図１４における上方）へ押し上げるように操作すれば、軸部６２ａを支点にして解除釦６０が回動し、押動部６３，６３でそれぞれ対向する端子板４１の受け部４４ｃを押圧することにより、電線に食い込んでいる鎖錠部４４ａを電線から離すように鎖錠片４４を撓ませて電線の引き抜きが可能となる。
【００２４】
従来の速結端子装置では工具を使って解除釦を操作しながら電線を引き抜かなければならないため、一方の手で配線器具の器体を持ち、他方の手に持った工具を操作孔に挿入して解除釦を操作した状態では両手が塞がれてしまうために電線を電線挿入孔から引き抜くことが困難であった。これに対して本実施形態では、器体１を持った手の指（例えば、親指）で器体１の側面に露出する解除釦６０の操作部６１を操作して解除釦６０を回動させると電線に食い込んでいる鎖錠部４４ａを電線から離すことができ、一方の手で器体１の保持と解除釦６０の操作を同時に行い、他方の手で電線を引き抜くことができるため、従来の速結端子装置に比較して電線の取り外し作業が容易に行える。なお、本実施形態では接触片４３の幅寸法を鎖錠片４４の幅寸法よりも狭く（およそ半分に）設定し、解除釦６０が鎖錠片４４を撓ませるために必要なスペースを広くとって解除釦６０の操作性を向上させている。
【００２５】
ところで、従来技術で説明したように鎖錠片４４の長さが短いほど大きな反力が得られて電線１０１の保持力が大きくなるが、解除釦６０により鎖錠片４４を撓ませる力が大きくなり、反対に鎖錠片４４の長さが長いほど解除釦６０により鎖錠片４４を撓ませる力が小さくて済むが、鎖錠片４４の反力が小さくなって電線１０１の保持力が小さくなってしまい、電線の保持力の向上と解除操作時の操作力の低減を両立することが困難である。これに対して本実施形態では、解除釦６０によって押し動かされる受け部４４ｃを、鎖錠片４４の先端から鎖錠部４４ａよりも先方へ突出させて設けているから、鎖錠部４４ａによる電線１０１の保持力を維持したまま解除釦６０により鎖錠片４４を撓ませるのに必要な操作力が低減でき、電線１０１の保持力の向上と解除操作時の操作力の低減を両立することが可能である。但し、先端が接触片４３よりも外側に突出しない寸法に受け部４４ｃを形成することが望ましい。つまり、受け部４４ｃの先端が接触片４３よりも外側に突出していると、端子板４１の製造時や組立時等において受け部４４ｃに対して不用意に外力が加わって変形等の不具合が発生する虞があるが、受け部４４ｃの先端を上記寸法に形成することで、このような不具合の発生を防ぐことができる。
【００２６】
ところで、カバー２０の前壁には一つのプラグに設けた一対の栓刃を挿入することができる差込部２４が１口分形成されている。差込部２４は各刃受３１の刃受ばね３２，３３に対応する部位にそれぞれ開口する挿入口２５よりなり、各挿入口２５は平板状の平型栓刃が差し込まれる平型栓刃挿入口２５ａと、丸ピン状のピン型栓刃が差し込まれるピン型栓刃挿入口２５ｂとを連通させた形状に形成されている。つまり、平型栓刃挿入口２５ａは矩形状であって、長手方向の中間部の一側縁に円状のピン型栓刃挿入口２５ｂが連通した形状になっている。また、平型栓刃挿入口２５ａの中心間の距離よりも、ピン型栓刃挿入口２５ｂの中心間の距離の方が広くなっている。平型栓刃挿入口２５ａに挿入される平型栓刃は刃受ばね３２の側面と刃受ばね３３との間で挟持され、ピン型栓刃挿入口２５ｂに挿入されるピン型栓刃は一対の刃受ばね３２の間で挟持される。
【００２７】
次に、ボディ１０とカバー２０を結合して器体１を組み立てる構造について説明する。本実施形態においては、ボディ１０とカバー２０との双方に設けた嵌合部６，７に組立部材５０を凹凸嵌合することでボディ１０とカバー２０とを結合して器体１を組み立てるようになっている。
【００２８】
ボディ１０の長手方向に対向する両側面には、図４に示すように一対の縦溝１５に挟まれた中央部に角柱状の嵌合部６が突設されている。一方、カバー２０の長手方向の両側面には、図５に示すように一対の嵌合部７がそれぞれ突設されている。ここで、カバー２０に突設されている嵌合部７は、図５（ｄ）に示すように四隅のうちの一つに切り欠き７ａが形成されている。
【００２９】
組立部材５０は弾性を有する合成樹脂成型品からなり、図６に示すようにカバー２０の嵌合部７，７と各々嵌合する一対の嵌合孔５１，５１が長手方向に並設された短冊状の主片５２と、ボディ１０の嵌合部６と嵌合する嵌合孔５３ａが設けられて主片５２の後端縁中央より後方へ突設された逆凸字状の凸片５３とを有し、器体１と対向する主片５２の背面側において嵌合孔５１，５１の隅と重なる両角部からは先端に係止爪５４ａを有する係止突片５４が背方へ突設されている。また、主片５２の表面における前方両端部には、埋込型の配線器具を造営面に埋込配設するための取付枠、又は配線器具の取付構造を有したフラッシプレート（以下、単に「プレート」という）が具備する係合孔と係合して器体１を取付枠又はプレート枠に取り付けるための一対の取付部（取付爪）５５が突設されている。
【００３０】
一方、カバー２０の長手方向の両側面には、嵌合部７の切り欠き７ａに連通する凹溝２７と、凹溝２７の奥側に設けられて組立部材５０の係止突片５４に設けた係止爪５４ａが係止する被係止部２６とが長手方向両端部近傍の背面側に形成されている（図５（ｃ）参照）。
【００３１】
而して、ボディ１０とカバー２０とを結合して器体１を組み立てるには、ボディ１０とカバー２０を開口面側で突き合わせた状態で係止突片５４を凹溝２７に挿入するように組立部材５０を器体１の長手方向に対向する両側面の方へ押しつければ、組立部材５０の嵌合孔５３ａ，５１にボディ１０及びカバー２０の各嵌合部６，７がそれぞれ嵌合してボディ１０とカバー２０とが結合されると同時に、係止突片５４の先端に設けた係止爪５４ａがカバー２０の被係止部２６に係止することによって、組立部材５０の嵌合部６，７からの脱落が防止できる。
【００３２】
（実施形態２）
図１５は本実施形態における端子板４１を示す斜視図である。この端子板４１は、略コ字形の主片４２と、主片４２の幅細の両端縁から後方へ垂下された一対の接触片４３と、主片４２の幅太の他端側における両側縁から後方へ垂下された略Ｊ字形の一対の鎖錠片４４とを有し、弾性を有する帯状の金属板を加工して接触片４３の先端部と鎖錠片４４の先端部がそれぞれ交差するように折り曲げて一体に形成される。すなわち、本実施形態における端子板４１は、実施形態１における２つの端子板４１（各端子板４１は鏡像の関係にある）を、鎖錠部４４ａ同士が隣り合うように互いの主片４２で連結した形状となっている。なお、端子板４１以外の構成は実施形態１とほぼ共通であるから図示並びに説明は省略する。
【００３３】
このように本実施形態では、複数の端子板４１，４１を一体に形成することで部品点数を削減してコストダウンと組立性の向上を図っている。
【００３４】
（実施形態３）
図１６は本実施形態における端子板４１を示す斜視図である。この端子板４１は、実施形態１における２つの端子板４１を、受け部４４ｃ同士が隣り合うように互いの主片４２で連結した形状となっており、略Ｔ字形の主片４２と、主片４２の幅細の両端縁から後方へ垂下された一対の接触片４３と、主片４２の幅太の他端側における両側縁から後方へ垂下された略Ｊ字形の一対の鎖錠片４４とを有し、弾性を有する帯状の金属板を加工して接触片４３の先端部と鎖錠片４４の先端部がそれぞれ交差するように折り曲げて一体に形成される。したがって、実施形態２と同様に複数の端子板４１，４１を一体に形成することで部品点数を削減してコストダウンと組立性の向上が図れるものである。なお、端子板４１以外の構成は実施形態１とほぼ共通であるから図示並びに説明は省略する。
【００３５】
また本実施形態においては、隣接する２つの受け部４４ｃには他方に向かって突片４４ｄが延設されている。このため受け部４４ｃを押し動かす方向に直交する方向（図１６における左右方向）の解除釦（図示せず）の幅寸法が小さくできるという利点がある。
【００３６】
（実施形態４）
図１７は本実施形態における端子板４１を示す斜視図である。この端子板４１は、実施形態３の端子板４１において、受け部４４ｃと鎖錠片４４との連結部位４４ｄが受け部４４ｃの他の部位よりも幅狭に形成されている点に特徴があり、他の構成は実施形態３及び実施形態１とほぼ共通であるから図示並びに説明は省略する。
【００３７】
而して、受け部４４ｃと鎖錠片４４との連結部位４４ｄを受け部４４ｃの他の部位よりも幅狭に形成したことにより、幅狭の連結部位４４ｄにおいて受け部４４ｃが撓み易くなり、解除釦６０の操作力をさらに低減することができる。
【００３８】
（実施形態５）
図１８は本実施形態における端子板４１を示す斜視図である。この端子板４１は、実施形態３の端子板４１において、受け部４４ｃの厚みが鎖錠片４４の厚みよりも小さく設定されている点に特徴があり、他の構成は実施形態３及び実施形態１とほぼ共通であるから図示並びに説明は省略する。
【００３９】
而して、受け部４４ｃ（あるいは受け部４４ｃと鎖錠部４４ａ）にたたき加工などを施すことで鎖錠片４４よりも厚みを薄くすれば、受け部４４ｃが撓み易くなることで解除釦６０の操作力をさらに低減することができる。
【００４０】
【発明の効果】
請求項１の発明は、配線器具の器体に設けた電線挿入孔を通して前記器体に導入される電線を結線する速結端子装置であって、ばね性を有する金属板を両端部が重なり合うように対向して折り曲げてなる端子板を備え、前記端子板の一方の端部に電線と接触する接触片が一体に設けられ、且つ他方の端部に接触片側へ突出する鎖錠片を設け、前記接触片にほぼ平坦な面を有して電線に弾接する接触部と、電線の挿入方向に沿った接触部の両側において電線を押圧する一対の押圧部とが設けられ、前記鎖錠片には、電線を接触部側へ押圧するとともに電線の一部に食い込んで抜け止めする鎖錠部と、鎖錠部よりも先方へ突出する受け部とが先端に設けられてなり、前記接触部が設けられた端子板の一方の端部と鎖錠片が設けられた端子板の他方の端部とが、器体内に導入される電線から離れる向きに撓み可能であり且つ接触片の電線挿入孔から遠い側の先端部よりも電線挿入孔に近い側の後端部が電線に近付く向きに傾斜するように前記端子板が器体内に収納されるとともに、前記受け部を押し動かして前記鎖錠片を撓ませることにより電線に食い込んだ鎖錠部を電線から引き離して鎖錠部による鎖錠状態を解除する解除手段を備えたことを特徴とし、解除手段によって押し動かされる受け部を、鎖錠片の先端から鎖錠部よりも先方へ突出させて設けているから、鎖錠部による電線の保持力を維持したまま解除手段により鎖錠片を撓ませるのに必要な操作力が低減でき、電線の保持力の向上と解除操作時の操作力の低減を両立することが可能となる。また、電線挿入孔に対して電線が傾いて挿入されたとしても、接触片が電線の傾きに追従することが可能であり、同じくばね性を有する鎖錠片によって電線が接触片の方へ押圧されることで電線の挿入状態に関わらず端子板と電線の接続状態を安定させることができる。
【００４１】
請求項２の発明は、請求項１の発明において、複数の前記端子板、接触片、鎖錠片が一体に形成されたことを特徴とし、部品点数の削減によるコストダウンと組立性の向上が図れる。
【００４２】
請求項３の発明は、請求項１又は２の発明において、電線の挿入方向と直交する方向における前記鎖錠片の幅よりも前記接触片の幅が狭くされたことを特徴とし、解除手段が鎖錠片を撓ませるために必要なスペースを広くとることができて解除手段の操作性が向上する。
【００４３】
請求項４の発明は、請求項１又は２又は３の発明において、前記受け部は、先端が前記接触片よりも外側に突出しない寸法に形成されたことを特徴とし、受け部に対して不用意に外力が加わって変形等の不具合が発生するのを防ぐことができる。
【００４４】
請求項５の発明は、請求項２の発明において、前記複数の受け部が隣接して設けられるとともに他方の受け部に向かって突片が延設されたことを特徴とし、受け部を押し動かす方向に直交する方向の解除手段の寸法が小さくできる。
【００４５】
請求項６の発明は、請求項１の発明において、前記受け部と前記鎖錠片との連結部位が該受け部の他の部位よりも幅狭に形成されたことを特徴とし、幅狭の連結部位において受け部が撓み易くなることで解除手段の操作力をさらに低減することができる。
【００４６】
請求項７の発明は、請求項１の発明において、前記受け部の厚みが鎖錠片の厚みよりも小さく設定されたことを特徴とし、受け部が撓み易くなることで解除手段の操作力をさらに低減することができる。
【図面の簡単な説明】
【図１】実施形態１のコンセントを示す分解斜視図である。
【図２】同上を示し、（ａ）は正面図、（ｂ）は右側面図、（ｃ）は下面図、（ｄ）は背面図である。
【図３】同上の斜視図である。
【図４】同上におけるボディを示し、（ａ）は正面図、（ｂ）は下面図、（ｃ）は（ａ）のＡ−Ａ線断面矢視図、（ｄ）は背面図、（ｅ）は右側面図である。
【図５】同上におけるカバーを示し、（ａ）は正面図、（ｂ）は下面図、（ｃ）は右側面図、（ｄ）は背面図である。
【図６】同上における組立部材を示し、（ａ）は正面図、（ｂ）は上面図、（ｃ）は下面図、（ｄ）右側面図である。
【図７】同上における刃受を示し、（ａ）は正面図、（ｂ）は下面図、（ｃ）は右側面図である。
【図８】同上における端子板を示し、（ａ）は正面図、（ｂ）は下面図、（ｃ）は右側面図である。
【図９】同上における解除釦を示し、（ａ）は正面図、（ｂ）は（ａ）のＡ−Ａ線断面矢視図、（ｃ）は下面図、（ｄ）は右側面図である。
【図１０】同上の端子板に電線が接続された状態を示す要部断面図である。
【図１１】同上の端子板と解除釦との配置関係を示す斜視図である。
【図１２】同上における解除釦の斜視図である。
【図１３】同上における解除釦を後方から見た斜視図である。
【図１４】（ａ）（ｂ）は同上の解除釦の動作説明図である。
【図１５】実施形態２における端子板の斜視図である。
【図１６】実施形態３における端子板の斜視図である。
【図１７】実施形態４における端子板の斜視図である。
【図１８】実施形態５における端子板の斜視図である。
【図１９】従来例の要部を示す断面図である。
【図２０】同上における電線を引き抜く場合の操作を説明する説明図である。
【図２１】同上における電線と端子板との接続構成を説明する説明図である。
【符号の説明】
１器体
１０ボディ
２０カバー
４０端子部
４１端子板
４４ａ鎖錠部
４４ｃ受け部
６０解除釦
６１操作部
６３押動部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a quick-connect terminal device that is housed in a case of a wiring device such as a switch or an outlet and connects an electric wire.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in wiring devices such as switches and outlets, quick connection terminals have been widely used to connect electric wires introduced into a container through an electric wire insertion hole provided in the container. As this type of quick connection terminal, as shown in FIG. 19, there is a space between a terminal plate 202 and a terminal plate 202 that comes into contact with the electric wire 101 housed in the vessel body 200 and introduced into the vessel body 200 through the electric wire insertion hole 201. And a lock spring 203 that clamps the electric wire is known (for example, see Patent Document 1). The locking spring 203 is a leaf spring, and is formed so as to hold the electric wire 101 by sandwiching the electric wire 101 between the contact piece 203 a and the locking piece 203 b provided on the locking spring 203 and the terminal plate 202. ing. That is, when the electric wire 101 is introduced into the main body 200 through the electric wire insertion hole 201 provided in the main body 200, the electric wire 101 bends in a direction to separate the contact piece 203a and the locking piece 203b from the terminal plate 202, and the contact piece 203a and the chain The electric wire 101 is configured to be sandwiched between the terminal plate 202 and the lock piece 203b by a spring force generated in the lock piece 203b. Here, in a state where the electric wire 101 is sandwiched between the terminal plate 202 and the contact piece 203a and the locking piece 203b, the edges of the contact piece 203a and the locking piece 203b elastically contact the electric wire 101, and When the locking piece 203b bites into the part, the electric wire 101 is prevented from coming off. Thus, since the electric wire 101 is held in a state where it is in contact with the terminal plate 202 simply by inserting the electric wire 101 into the electric wire insertion hole 201, the connection of the electric wire 101 is compared with a structure in which the electric wire 101 is connected using a terminal screw. Work becomes easy.
[0003]
Here, as shown in FIG. 20, an operation hole 204 is provided in the rear wall of the container body 200, and a release button 205 is housed and disposed inside the container body 200 on the back side of the operation hole 204. As shown in FIG. 21, the release button 205 is disposed beside the locking spring 203, and has a shape in which a pushing piece 205a that abuts on the rear surface side of the locking piece 203b of the locking spring 203 protrudes from the side surface. The operation hole 204 has such a shape that a tool 210 such as a tip of a minus driver can be inserted, and when the tool 210 is inserted into the operation hole 204 and the release button 205 is pressed forward, the lock piece 203b is pressed. By receiving a pressing force from 205a, it is bent in a direction away from the electric wire 101. Therefore, when a tool is inserted into the operation hole 204 and the release button 205 is pressed while the electric wire 101 is connected, the locking piece 203b is bent away from the electric wire 101 and the mechanical holding of the electric wire 101 is released. 101 can be pulled out from the container 200.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-185905 (paragraph 0014, FIG. 1)
[0005]
[Problems to be solved by the invention]
By the way, in the conventional quick connection terminal device as described above, the shorter the length of the locking piece 203b, the larger the reaction force is obtained and the holding force of the electric wire 101 is increased, but the locking button 203b is bent by the release button 205. On the contrary, the longer the length of the locking piece 203b, the smaller the force to bend the locking piece 203b by the release button 205, but the reaction force of the locking piece 203b becomes smaller and the electric wire 101 Since the holding force becomes small, it is difficult to achieve both the improvement of the holding force of the electric wire and the reduction of the operation force during the release operation.
[0006]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a quick connection terminal device capable of achieving both improvement in electric wire holding force and reduction in operating force during release operation. is there.
[0007]
[Means for Solving the Problems]
  In order to achieve the above object, the invention according to claim 1 is an electric wire introduced into the container through an electric wire insertion hole provided in the container of the wiring device.A contact piece that comprises a terminal plate formed by bending a metal plate having a spring property so that both end portions thereof are overlapped with each other, and one end of the terminal plate is in contact with an electric wire Is provided integrally, and a locking piece protruding toward the contact piece is provided at the other end, a contact portion having a substantially flat surface on the contact piece and elastically contacting the electric wire, and along the insertion direction of the electric wire A pair of pressing portions that press the electric wire on both sides of the contact portion are provided, and the locking piece presses the electric wire toward the contact portion side and bites into a part of the electric wire to prevent it from coming off, and a chain A receiving portion that protrudes further forward than the lock portion is provided at the tip, and one end portion of the terminal plate provided with the contact portion and the other end portion of the terminal plate provided with the locking piece. It is possible to bend away from the electric wire introduced into the body and to insert the contact piece into the wire. The terminal plate is housed in the container so that the rear end portion closer to the wire insertion hole is inclined to approach the electric wire than the distal end portion far from the hole, and the receiving portion is pushed to move the chain. There was a release means to release the locked state by the lock part by pulling the lock part that digged into the electric wire by bending the lock piece away from the electric wire.It is characterized by that.
[0008]
  The invention of claim 2 is the invention of claim 1,A plurality of the terminal plates, contact pieces, and locking pieces are integrally formed.It is characterized by that.
[0009]
  The invention of claim 3 is the invention of claim 1 or 2,ElectricThe width of the contact piece is narrower than the width of the locking piece in a direction orthogonal to the line insertion direction.
[0010]
According to a fourth aspect of the present invention, in the first, second, or third aspect of the invention, the receiving portion is formed to have a dimension such that a tip does not protrude outward from the contact piece.
[0011]
  The invention of claim 5 is the invention of claim 2, wherein the plurality ofReceipt ofA protrusion is provided adjacently and a protruding piece extends toward the other receiving part.
[0012]
The invention of claim 6 is characterized in that, in the invention of claim 1, a connecting portion between the receiving portion and the locking piece is formed narrower than other portions of the receiving portion.
[0013]
The invention of claim 7 is characterized in that, in the invention of claim 1, the thickness of the receiving portion is set smaller than the thickness of the lock piece.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment in which a quick connection terminal device according to the present invention is applied to a terminal portion of an outlet will be described in detail with reference to the drawings. However, the wiring device is not limited to an outlet, and it goes without saying that the technical idea of the present invention can be applied to a wiring device other than an outlet such as a switch.
[0015]
(Embodiment 1)
As shown in FIG. 1 to FIG. 3, the container 1 is also excellent in tracking resistance, similarly to the body 10 formed in a rectangular parallelepiped shape whose front surface is opened using a thermosetting synthetic resin excellent in tracking resistance. It is formed by joining a cover 20 formed in a rectangular parallelepiped shape whose rear surface is opened using a thermosetting synthetic resin.
[0016]
The internal space of the body 10 is divided into two by a pair of partition walls 12 provided in the middle portion in the longitudinal direction. Further, as shown in FIG. 5, a partition wall 20 a is also formed in the cover 20, and when the body 10 and the cover 20 are joined, the partition wall 20 a of the cover 20 is fitted between the pair of partition walls 12 of the body 10. As a result, the internal space of the container 1 is divided into two independent chambers.
[0017]
In each storage chamber 13 formed through the partition wall 12 in the body 10, blade receptacles 31 for receiving plug blades of plugs are respectively stored. As shown in FIG. 7, each blade receiver 31 has a pair of blade receiving springs 32 that sandwich the plug blades at the tip portions facing each other, and a U-shape that continuously couples one side surfaces of the both blade receiving springs 32. And a blade receiving spring 33 that protrudes from the connecting piece 34 and faces the side surface of the double blade receiving spring 32. In addition, four cylindrical protrusions 34a are arranged in the connecting piece 34, and a terminal plate 41 (described later) is caulked and fixed to each pair of protrusions 34a.
[0018]
The terminal unit 40 includes a terminal plate 41 and a release button 60. As shown in FIG. 8A, the terminal plate 41 is hung from the substantially L-shaped main piece 42 and the narrow end of the main piece 42 to the rear (downward in FIG. 8B, the same applies hereinafter). A contact piece 43, a substantially J-shaped locking piece 44 that hangs backward from the other wide end of the main piece 42, and a fixing piece 45 that protrudes laterally from the side edge of the locking piece 44. It is formed integrally by processing a belt-shaped metal plate having elasticity and bending the tip of the contact piece 43 and the tip of the locking piece 44 so as to intersect. The contact piece 43 is provided with a contact portion 43a having a substantially flat surface and elastically contacting the electric wire, and a pair of pressing portions 43b and 43c for pressing the electric wire on both sides of the contact portion 43a along the insertion direction of the electric wire. Yes. In addition, the locking piece 44 positioned inside the contact piece 43 has a locking part 44a that presses the electric wire toward the contact part 43a and bites into a part of the electric wire to prevent it from coming off, and a locking part 44a. A receiving portion 44c that protrudes closer to the contact piece 43 than the locking portion 44a is provided in parallel with the receiving portion 44c, and a bent portion 44b that protrudes away from the electric wire (contact piece 43) is provided behind the locking portion 44a. It has been. 8C, the width dimension of the contact piece 43 is the width dimension of the lock piece 44 so that the locking part 44a faces the contact piece 43 and the receiving part 44c does not face the contact piece 43. It is set to about half. Further, the fixed piece 45 is provided with an insertion hole 45a through which a pair of projections 34a arranged in the connection piece 34 of the blade receiver 31 are inserted, and the projection 34a inserted through the pair of insertion holes 45a is provided. The fixing piece 45 is fixed to the connecting piece 34 of the blade receiver 31 by caulking. A blade receiving block 30 including a pair of terminal plates 41 and a blade receiver 31 fixed to the connecting piece 34 so as to be adjacent to the pair of blade receiving springs 32 is stored in each storage chamber 13 of the body 10.
[0019]
A pair of electric wire insertion holes 11 are provided in the bottom wall of each storage chamber 13 of the body 10 so that an electric wire can be introduced between the contact piece 43 and the locking piece 44. As shown in FIG. 10, when the electric wire 101 is inserted between the contact piece 43 and the locking piece 44 through the electric wire insertion hole 11, the locking portion 44 a of the locking piece 44 bites into the electric wire 101 and the electric wire 101 is pulled out. The electric wire 101 is elastically contacted with the contact portion 43a of the contact piece 43 by the spring force of the locking piece 44, and the electric wire 101 is further pressed toward the locking piece 44 by the pair of pressing portions 43b and 43c. The pressing force of the portion 44a and the pair of pressing portions 43b and 43c is balanced, and the electric wire 101 is held. However, the pressing portion 43c closer to the main piece 42 is chamfered on the surface in contact with the electric wire 101 to increase the contact area.
[0020]
  By the way, the quick connection terminal in the conventional example is composed of a terminal plate 202a and a lock spring 203, and the terminal plate 202a is formed of a metal material having no spring property. For this reason, as shown in FIG. 21A, when the electric wire 101 is inserted in a normal state straight with respect to the terminal plate 202a and the lock spring 203, the contact area between the terminal plate 202a and the electric wire 101 is sufficiently large. However, when the electric wire 101 is inserted with an inclination with respect to the terminal plate 202a and the lock spring 203 as shown in FIG. 4B, the contact area between the terminal plate 202a and the electric wire 101 is reduced. There was a fear. On the other hand, in the terminal part 40 of this embodiment, it corresponds to the conventional terminal board 202a.Contact piece 43And corresponds to the conventional lock spring 203Locking piece 44Are integrally formed with the terminal plate 41 made of a metal plate having spring properties, so that even if the electric wire 101 is inclined and inserted,Contact piece 43Can follow the inclination of the electric wire 101 because it has springiness, and also has springinessLocking piece 44The electric wire 101 isContact piece 43The connection state of the terminal board 41 and the electric wire 101 can be stabilized regardless of the insertion state of the electric wire 101 by being pressed toward the direction.
[0021]
On the other hand, a release button 60 that constitutes the terminal portion 40 together with the terminal plate 41 is disposed in each storage chamber 13. The release button 60 is made of a synthetic resin molded product, and as shown in FIGS. 1 and 9, a pair of connecting portions 64, 64 project in the same direction from both ends of the rod-like operating portion 61, and each connecting portion 64, The tip portions of 64 are connected by a bridging portion 66 so that the whole is formed in a substantially square shape. Further, a pair of pushing portions 63 and 63 project from both ends of the bridging portion 66 in the direction opposite to the connecting portions 64 and 64, and an arm portion is substantially parallel to the pushing portion 63 from the central portion of the bridging portion 66. 62 is projected, and a support portion 65 is projected in a direction substantially perpendicular to the protruding direction of the arm portion 62 and opposite to the connecting portion 64. Further, at the tip of the arm portion 62, a cylindrical shaft portion 62a that is slidably mounted on a bearing base 14 provided in the body 10 as will be described later, the axial direction thereof is the longitudinal direction of the bridging portion 66. It is provided so that it may become parallel. Then, as will be described later, the shaft portion 62a is rotatably supported while the support portion 65 is in contact with the fixed rib 28 provided on the cover 20 and is placed on the bearing base 14. Here, a side surface 65a of the support portion 65 opposite to the shaft portion 62a is formed in a cylindrical surface, and a curved surface (cylindrical surface) 28a that is in sliding contact with the side surface 65a of the support portion 65 is formed at the tip of the fixing rib 28. ing.
[0022]
On the other hand, a pair of longitudinal grooves 15 communicating with the respective storage chambers 13 are arranged in parallel on both side surfaces of the body 10 in the longitudinal direction, and the release button 60 is connected to the connection portion 64 and the operation portion 61 of the body 10 through the longitudinal groove 15. The pair of pushing portions 63, 63 are exposed to the outside and face the receiving portion 44c of the locking piece 44 of the terminal plate 41 (see FIG. 12), and the shaft portion 62a is attached to the bearing base 14 provided in the storage chamber 13. And the support portion 65 is brought into contact with the tip of the fixing rib 28 of the cover 20 so that the shaft portion 62a can be pivoted along the front-rear direction (vertical direction in FIG. 1) of the container body 1. It arrange | positions in the storage chambers 13 and 13 (refer FIG. 3). Here, in the present embodiment, as shown in FIG. 13, a relief portion 62 b for allowing the bearing base 14 to escape is recessed in the rear surface side of the arm portion 62.
[0023]
Thus, in order to pull out the electric wire connected to the terminal portion 40, the operation portion 61 exposed on the side surface of the container body 1 through the longitudinal grooves 15 and 15 may be operated with a finger. That is, as shown in FIG. 14B, if the operation unit 61 is operated to be pushed forward (upward in FIG. 14), the release button 60 rotates around the shaft portion 62a as a fulcrum. By pressing the receiving portions 44c of the terminal plates 41 facing each other at 63, the locking pieces 44 are bent so that the locking portions 44a biting into the electric wires are separated from the electric wires, and the electric wires can be pulled out.
[0024]
In the conventional quick-connect terminal device, the wire must be pulled out while operating the release button using a tool, so hold the wiring fixture with one hand and insert the tool held in the other hand into the operation hole. When the release button is operated, both hands are blocked, and it is difficult to pull out the wire from the wire insertion hole. On the other hand, in the present embodiment, the release button 60 is rotated by operating the operation unit 61 of the release button 60 exposed on the side surface of the body 1 with a finger (for example, thumb) of the hand holding the body 1. The locking portion 44a biting into the electric wire can be separated from the electric wire, the holding of the container 1 and the operation of the release button 60 can be performed simultaneously with one hand, and the electric wire can be pulled out with the other hand. Compared with the quick-connect terminal device, the wire can be easily removed. In this embodiment, the width dimension of the contact piece 43 is set to be narrower (approximately half) than the width dimension of the locking piece 44, and a space necessary for the release button 60 to bend the locking piece 44 is widened. Thus, the operability of the release button 60 is improved.
[0025]
By the way, as explained in the prior art, the shorter the length of the locking piece 44, the larger the reaction force is obtained and the holding force of the electric wire 101 is increased. However, the force to bend the locking piece 44 by the release button 60 is large. On the contrary, the longer the length of the locking piece 44, the smaller the force for bending the locking piece 44 by the release button 60, but the reaction force of the locking piece 44 becomes smaller and the holding force of the electric wire 101 becomes smaller. Therefore, it is difficult to achieve both the improvement of the holding force of the electric wire and the reduction of the operation force during the release operation. On the other hand, in the present embodiment, the receiving portion 44c pushed and moved by the release button 60 is provided so as to protrude from the tip of the locking piece 44 to the front side of the locking portion 44a. The operation force necessary to bend the locking piece 44 by the release button 60 while maintaining the holding force of 101 can be reduced, and both the improvement of the holding force of the electric wire 101 and the reduction of the operation force during the releasing operation can be achieved. Is possible. However, it is desirable to form the receiving portion 44 c so that the tip does not protrude outward from the contact piece 43. That is, if the tip of the receiving portion 44c protrudes outward from the contact piece 43, an external force is inadvertently applied to the receiving portion 44c when the terminal plate 41 is manufactured or assembled, resulting in problems such as deformation. However, the occurrence of such a problem can be prevented by forming the tip of the receiving portion 44c to have the above dimensions.
[0026]
By the way, an insertion portion 24 into which a pair of plug blades provided in one plug can be inserted is formed on the front wall of the cover 20 for one port. The insertion portion 24 includes insertion openings 25 that open at portions corresponding to the blade receiving springs 32 and 33 of each blade receiver 31, and each insertion opening 25 is a flat plug blade insertion into which a flat flat plug blade is inserted. The opening 25a and the pin-type plug blade insertion port 25b into which a round pin-shaped pin-type plug blade is inserted are formed into a shape that communicates with each other. That is, the flat type plug blade insertion port 25a has a rectangular shape, and has a shape in which the circular pin type blade insertion port 25b communicates with one side edge of the middle portion in the longitudinal direction. Further, the distance between the centers of the pin-type plug blade insertion ports 25b is larger than the distance between the centers of the flat-type plug blade insertion ports 25a. The flat type plug blade inserted into the flat type plug blade insertion port 25a is sandwiched between the side surface of the blade receiving spring 32 and the blade receiving spring 33, and the pin type plug blade inserted into the pin type plug blade insertion port 25b is It is clamped between the pair of blade receiving springs 32.
[0027]
Next, a structure for assembling the container 1 by combining the body 10 and the cover 20 will be described. In the present embodiment, the body 10 is assembled by joining the body 10 and the cover 20 by fitting the assembly member 50 to the fitting portions 6 and 7 provided on both the body 10 and the cover 20. It has become.
[0028]
On both side surfaces facing the longitudinal direction of the body 10, as shown in FIG. 4, prismatic fitting portions 6 project from a central portion sandwiched between a pair of vertical grooves 15. On the other hand, as shown in FIG. 5, a pair of fitting portions 7 are provided on both side surfaces of the cover 20 in the longitudinal direction. Here, as shown in FIG. 5D, the fitting portion 7 protruding from the cover 20 has a notch 7a formed at one of the four corners.
[0029]
The assembly member 50 is made of a synthetic resin molded product having elasticity, and as shown in FIG. 6, a pair of fitting holes 51 and 51 for fitting with the fitting portions 7 and 7 of the cover 20 are arranged in parallel in the longitudinal direction. A strip-shaped main piece 52 and a fitting hole 53a that fits with the fitting portion 6 of the body 10 are provided, and the convex piece 53 having an inverted convex shape that protrudes rearward from the center of the rear end edge of the main piece 52. A locking protrusion 54 having a locking claw 54a at the tip protrudes from both corners overlapping the corners of the fitting holes 51 on the back side of the main piece 52 facing the container 1 It is installed. Further, at both front ends of the surface of the main piece 52, a mounting plate for embedding and arranging an embedded wiring device on the construction surface, or a flash plate having a wiring device mounting structure (hereinafter simply referred to as “ A pair of attachment portions (attachment claws) 55 are provided so as to engage with the engagement holes provided in the “plate” and attach the container 1 to the attachment frame or the plate frame.
[0030]
On the other hand, on both side surfaces in the longitudinal direction of the cover 20, a concave groove 27 communicating with the notch 7 a of the fitting portion 7 and a locking projection piece 54 of the assembly member 50 provided on the back side of the concave groove 27 are provided. The locked portion 26 to which the locking claw 54a is locked is formed on the back side in the vicinity of both end portions in the longitudinal direction (see FIG. 5C).
[0031]
Thus, in order to assemble the body 1 by joining the body 10 and the cover 20, the locking protrusion 54 is inserted into the concave groove 27 in a state where the body 10 and the cover 20 are abutted on the opening surface side. When the assembly member 50 is pressed toward the opposite side surfaces of the container body 1 in the longitudinal direction, the fitting portions 6 and 7 of the body 10 and the cover 20 are fitted in the fitting holes 53a and 51 of the assembly member 50, respectively. At the same time as the body 10 and the cover 20 are coupled, the locking claw 54 a provided at the tip of the locking protrusion 54 is locked to the locked portion 26 of the cover 20, so that the assembly member 50 is fitted. The drop-off from the joint portions 6 and 7 can be prevented.
[0032]
(Embodiment 2)
FIG. 15 is a perspective view showing the terminal board 41 in the present embodiment. The terminal plate 41 includes a substantially U-shaped main piece 42, a pair of contact pieces 43 suspended rearward from the narrow end edges of the main piece 42, and both side edges of the main piece 42 at the other wide end. A pair of substantially J-shaped locking pieces 44 that are hung from the back to the rear, and an elastic band-shaped metal plate is processed so that the tip of the contact piece 43 and the tip of the locking piece 44 intersect each other. And are integrally formed. That is, the terminal plate 41 in the present embodiment is obtained by replacing the two terminal plates 41 in the first embodiment (each terminal plate 41 is in a mirror image relationship) with the main pieces 42 such that the locking portions 44a are adjacent to each other. It has a connected shape. Since the configuration other than the terminal board 41 is substantially the same as that of the first embodiment, illustration and description thereof are omitted.
[0033]
As described above, in the present embodiment, the plurality of terminal plates 41 and 41 are integrally formed to reduce the number of parts, thereby reducing cost and improving assemblability.
[0034]
(Embodiment 3)
FIG. 16 is a perspective view showing the terminal board 41 in the present embodiment. The terminal plate 41 has a shape in which the two terminal plates 41 in the first embodiment are connected to each other by the main pieces 42 so that the receiving portions 44c are adjacent to each other. A pair of contact pieces 43 that are hung backward from both narrow edges of the piece 42 and a pair of substantially J-shaped locking pieces 44 that are hung back from both side edges on the other wide end of the main piece 42. It is formed integrally by processing a belt-like metal plate having elasticity and bending the tip of the contact piece 43 and the tip of the locking piece 44 so as to intersect each other. Therefore, as in the second embodiment, the plurality of terminal plates 41 and 41 are formed integrally to reduce the number of parts, thereby reducing costs and improving assemblability. Since the configuration other than the terminal board 41 is substantially the same as that of the first embodiment, illustration and description thereof are omitted.
[0035]
In the present embodiment, a projecting piece 44d extends from the two adjacent receiving portions 44c toward the other. For this reason, there is an advantage that the width dimension of the release button (not shown) in the direction orthogonal to the direction in which the receiving portion 44c is pushed (left and right direction in FIG. 16) can be reduced.
[0036]
(Embodiment 4)
FIG. 17 is a perspective view showing the terminal board 41 in the present embodiment. The terminal plate 41 is characterized in that, in the terminal plate 41 of the third embodiment, the connecting portion 44d between the receiving portion 44c and the locking piece 44 is formed narrower than the other portions of the receiving portion 44c. The other configurations are substantially the same as those in the third and first embodiments, and therefore illustration and description thereof are omitted.
[0037]
Thus, by forming the connecting portion 44d of the receiving portion 44c and the locking piece 44 to be narrower than the other portions of the receiving portion 44c, the receiving portion 44c is easily bent at the narrow connecting portion 44d, The operating force of the release button 60 can be further reduced.
[0038]
(Embodiment 5)
FIG. 18 is a perspective view showing the terminal board 41 in the present embodiment. This terminal plate 41 is characterized in that the thickness of the receiving portion 44c is set smaller than the thickness of the locking piece 44 in the terminal plate 41 of the third embodiment, and other configurations are the third embodiment and the third embodiment. 1 and the description thereof will be omitted.
[0039]
Thus, if the thickness of the receiving portion 44c (or the receiving portion 44c and the locking portion 44a) is reduced by making the receiving portion 44c thinner than the locking piece 44, the receiving portion 44c is easily bent and the release button 60 is thus bent. The operating force can be further reduced.
[0040]
【The invention's effect】
  According to the first aspect of the present invention, there is provided an electric wire introduced into the container through an electric wire insertion hole provided in the container of the wiring device.A contact piece that comprises a terminal plate formed by bending a metal plate having a spring property so that both end portions thereof are overlapped with each other, and one end of the terminal plate is in contact with an electric wire Is provided integrally, and a locking piece protruding toward the contact piece is provided at the other end, a contact portion having a substantially flat surface on the contact piece and elastically contacting the electric wire, and along the insertion direction of the electric wire A pair of pressing portions that press the electric wire on both sides of the contact portion are provided, and the locking piece presses the electric wire toward the contact portion side and bites into a part of the electric wire to prevent it from coming off, and a chain A receiving portion that protrudes further forward than the lock portion is provided at the tip, and one end portion of the terminal plate provided with the contact portion and the other end portion of the terminal plate provided with the locking piece. It is possible to bend away from the electric wire introduced into the body and to insert the contact piece into the wire. The terminal plate is housed in the container so that the rear end portion closer to the wire insertion hole is inclined to approach the electric wire than the distal end portion far from the hole, and the receiving portion is pushed to move the chain. There was a release means to release the locked state by the lock part by pulling the lock part that digged into the electric wire by bending the lock piece away from the electric wire.Since the receiving portion that is pushed and moved by the releasing means is provided so as to protrude further forward than the locking portion from the tip of the locking piece, the releasing means is maintained while maintaining the holding force of the electric wire by the locking portion. Therefore, it is possible to reduce the operating force required to bend the locking piece, and to simultaneously improve the holding force of the electric wire and reduce the operating force during the releasing operation.Moreover, even if the electric wire is inclined and inserted into the electric wire insertion hole, the contact piece can follow the inclination of the electric wire, and the electric wire is pressed toward the contact piece by a locking piece having spring characteristics. By doing so, the connection state of the terminal plate and the electric wire can be stabilized regardless of the insertion state of the electric wire.
[0041]
  The invention of claim 2 is the invention of claim 1,A plurality of the terminal plates, contact pieces, and locking pieces are integrally formed.This makes it possible to reduce costs and improve assembly by reducing the number of parts.
[0042]
  The invention of claim 3 is the invention of claim 1 or 2,ElectricThe width of the contact piece is narrower than the width of the lock piece in the direction perpendicular to the line insertion direction, and the release means can take a large space necessary to bend the lock piece. This improves the operability of the release means.
[0043]
The invention of claim 4 is characterized in that, in the invention of claim 1, 2 or 3, the receiving part is formed to have a dimension such that a tip does not protrude outward from the contact piece. It is possible to prevent the occurrence of defects such as deformation due to external force being applied.
[0044]
  The invention of claim 5 is the invention of claim 2, wherein the plurality ofReceipt ofIt is characterized in that the hook portion is provided adjacently and the protruding piece extends toward the other receiving portion, and the size of the releasing means in the direction orthogonal to the direction in which the receiving portion is pushed and moved can be reduced.
[0045]
The invention of claim 6 is characterized in that, in the invention of claim 1, the connecting part between the receiving part and the locking piece is formed narrower than the other part of the receiving part. The operating force of the release means can be further reduced because the receiving portion is easily bent at the connection portion.
[0046]
The invention of claim 7 is characterized in that, in the invention of claim 1, the thickness of the receiving portion is set smaller than the thickness of the locking piece, and the operating force of the releasing means is reduced by the bending of the receiving portion. Further reduction can be achieved.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an outlet according to a first embodiment.
2A is a front view, FIG. 2B is a right side view, FIG. 2C is a bottom view, and FIG. 2D is a rear view.
FIG. 3 is a perspective view of the same.
4A is a front view, FIG. 4B is a bottom view, FIG. 4C is a cross-sectional view taken along the line AA of FIG. 4A, and FIG. ) Is a right side view.
5A is a front view, FIG. 5B is a bottom view, FIG. 5C is a right side view, and FIG. 5D is a rear view.
6A and 6B show the assembly member according to the embodiment, wherein FIG. 6A is a front view, FIG. 6B is a top view, FIG. 6C is a bottom view, and FIG.
7A and 7B show a blade support according to the above, wherein FIG. 7A is a front view, FIG. 7B is a bottom view, and FIG. 7C is a right side view.
8A and 8B show the terminal board of the above, wherein FIG. 8A is a front view, FIG. 8B is a bottom view, and FIG. 8C is a right side view.
FIGS. 9A and 9B show the release button of the above, wherein FIG. 9A is a front view, FIG. 9B is a cross-sectional view taken along the line AA in FIG. 9A, FIG. 9C is a bottom view, and FIG. is there.
FIG. 10 is a cross-sectional view of a principal part showing a state in which an electric wire is connected to the terminal plate.
FIG. 11 is a perspective view showing the positional relationship between the terminal board and the release button.
FIG. 12 is a perspective view of a release button in the same as above.
FIG. 13 is a perspective view of the release button as seen from the rear side.
FIGS. 14A and 14B are operation explanatory views of the release button of the above.
15 is a perspective view of a terminal board according to Embodiment 2. FIG.
FIG. 16 is a perspective view of a terminal board according to the third embodiment.
FIG. 17 is a perspective view of a terminal board according to the fourth embodiment.
18 is a perspective view of a terminal board according to Embodiment 5. FIG.
FIG. 19 is a cross-sectional view showing a main part of a conventional example.
FIG. 20 is an explanatory diagram for explaining an operation when the electric wire is pulled out.
FIG. 21 is an explanatory diagram illustrating a connection configuration between the electric wire and the terminal plate in the same as above.
[Explanation of symbols]
1 body
10 body
20 Cover
40 Terminal section
41 Terminal board
44a Locking part
44c receiving part
60 Cancel button
61 Operation section
63 Pushing part

Claims

A quick-connection terminal device for connecting an electric wire introduced into a container through an electric wire insertion hole provided in the container of the wiring device, wherein a metal plate having a spring property is bent oppositely so that both ends overlap each other. A terminal plate, a contact piece that contacts the electric wire is integrally provided at one end of the terminal plate, and a locking piece that protrudes toward the contact piece is provided at the other end, and the contact piece is substantially flat. A contact portion that has a surface and elastically contacts the electric wire, and a pair of pressing portions that press the electric wire on both sides of the contact portion along the insertion direction of the electric wire are provided. One of the terminal plates provided with the contact portion is provided with a locking portion that presses into the wire and prevents it from slipping into a part of the electric wire and a receiving portion that protrudes further forward than the locking portion. And the other end of the terminal plate provided with the locking piece are The terminal plate can be bent in a direction away from the introduced electric wire, and the rear end of the contact piece closer to the electric wire insertion hole is inclined to approach the electric wire than the distal end of the contact piece far from the electric wire insertion hole. A release means for releasing the locked state by the lock part by pulling the lock part that has digged into the electric wire by pushing and moving the receiving part to bend the lock piece and pulling the locked part away from the electric wire. quick connect terminal apparatus characterized by comprising.

2. The quick-connection terminal device according to claim 1 , wherein the plurality of terminal plates, contact pieces, and locking pieces are integrally formed .

Quick connect terminal apparatus according to claim 1 or 2, wherein the width of the contact piece than a width of the locking piece in the direction perpendicular to the direction of insertion of conductive lines are narrow.

The quick-connection terminal device according to claim 1, wherein the receiving portion is formed to have a size such that a tip does not protrude outward from the contact piece.

Quick connect terminal apparatus according to claim 2, wherein said plurality of accepted portion, characterized in that the projecting piece toward the other receiving portion together provided adjacent is extended.

2. The quick connection terminal device according to claim 1, wherein a connecting portion between the receiving portion and the locking piece is formed narrower than other portions of the receiving portion.

The quick-connection terminal device according to claim 1, wherein the thickness of the receiving portion is set smaller than the thickness of the lock piece.