JP4055971B2

JP4055971B2 - Quick connection terminal

Info

Publication number: JP4055971B2
Application number: JP29442398A
Authority: JP
Inventors: 健造毎熊; 英和福原; 忠孝林
Original assignee: Tempearl Industrial Co Ltd
Current assignee: Tempearl Industrial Co Ltd
Priority date: 1998-09-30
Filing date: 1998-09-30
Publication date: 2008-03-05
Anticipated expiration: 2018-09-30
Also published as: JP2000113914A

Description

【０００１】
【産業上の利用分野】
本発明は、端子ねじなどを使用することなく圧接ばねを使用して電線接続を行う速結端子装置に関する。
【０００２】
【従来の技術】
図６(ａ)，(ｂ)は従来例１として示す実開平５−８７７７９号公報に示された遮断器の端子装置の電線接続前後の状態を示す側面透視図、図６（ｃ）は図６(ａ)の要部斜視図である。
【０００３】
図６において、６１，６２は遮断器本体の基台及びカバーであり、カバー６２には、工具挿入孔６２ａが、基台６１とカバー６２との間には電線挿入路６３が、それぞれ設けられている。６４は電線挿入路６３に平行して遮断器本体に取り付けられている固定端子、６５は固定部材６６により固定端子６４に固定されている圧接ばねであり、この圧接ばね６５は、一枚の板ばねを折曲形成したもので、取付部６５ａ、支持部６５ｂ、板状部６５ｃ及び係止部６５ｄを有している。
【０００４】
また、板状部６５ｃには、電線挿入方向に面して貫通孔６５ｅが形成されており、この貫通孔６５ｅには固定端子６４が貫通されている。さらに、係止部６５ｄの先端部は、固定端子６４の接続面の終端部６４ａ近傍に係止されており、これにより支持部６５ｂと板状部６５ｃの復元力で板状部６５ｃの図の上方への移動が規制されている。
【０００５】
次に、上記のような従来の端子装置に電線６７を接続する方法について説明する。まず、図６(ｂ)に示すように、電線６７を電線挿入路６３へ挿入し、その先端部を圧接ばね６５の貫通孔６５ｅに挿通させる。そして、電線６７をさらに押し込み、係止部６５ｄの終端部６４ａへの係止を解除させる。すると、支持部６５ｂの復元力により、板状部６５ｃが図の上方へ引き上げられ、電線６７は貫通孔６５ｅの縁部により固定端子６４の接続面に圧接され、電線６７の接続が完了する。
【０００６】
一方、電線６７を外す場合は、工具挿入孔６２ａからドライバー等の工具（図示せず）を挿入し、板状部６５ｃの上端部を押圧して、板状部６５ｃを押し下げれば、係止部６５ｄはその復元力によって元の係止位置に復帰し、電線７が引き抜き可能となるとともに、電線の再接続準備完了となる。
【０００７】
図７に実開平５−８７７７９号公報に示された端子装置とは別の端子装置の構造として従来例２を示す。
【０００８】
図７は遮断器内の電線挿入路７２に平行に取り付けられた固定端子、７４は固定端子に取り付けられた電線接続用の圧接ばねをそれぞれ示す。同図ｂに示すように圧接ばねの貫通孔７４ａに固定端子が貫通され、圧接ばねは上方に付勢されている。
【０００９】
電線接続時には押圧部７５を矢印方向へ押し下げ、同図ｃに示すように固定端子と貫通孔との間に形成された空間に電線を挿入し、圧接ばねの復元力によって電線を固定端子に押し付ける。
【００１０】
【発明が解決しようとする課題】
従来例２の構造では、電線が確実に端子奥まで入線されたか否かを判断する手段がなく、作業者の勘に頼っていた。従って、接続不良であってもそのまま通電使用してしまい、後に電線が外れ、電力の供給が停止する等、信頼性を低下させる原因となっていた。また、圧接ばねを押圧しながら電線を挿入しなければならず、両手が塞がってしまい、作業が困難であった。
【００１１】
一方、従来例１では、前記従来例２の課題は解決されているものの、電線を圧接する圧接ばねの圧接部（図６．６５ｅ）から電線の先端までの長さが前記従来例２よりも構造上短くなるため、電線が抜け易くなるなど、接触信頼性が低下してしまう。
【００１２】
従来例１では、電線を圧接ばねのばね力による挿入抵抗に抗して挿入するこにより圧接ばねと固定端子の係合を解除するが、係合を解除するための電線の挿入力は、板状部６５ｃのうでの長さに依存し、図６の例では重たい。
【００１３】
また、電線が従来の実施例１の端子に接続された状態（図６．（ｂ））から、電線がさらに端子奥へ挿入された場合、板ばねが変形し、係止部６５ｄが、終端部６４ａに係止が復元しなくなったり、貫通孔６５ｅの縁部による電線の固定端子６４への圧接力が弱くなるなど、本来の目的通りに装置が機能しなくなる心配がある。
【００１４】
前記従来例１の端子では、接続された電線が電線挿入孔の外側で動きを規制されていたり、分電盤の筐体と干渉していたり等、端子の周囲で電線が動きにくい状態にある場合、電線を解除しようとして、圧接ばねを押し下げても、電線の先端が動かない為、係止部６５ｄの終端部６４ａへの係止が復帰できないことがある。この場合、電線を開放するには圧接ばねを押しながら電線を引き抜かなければならず、両手が塞がってしまい作業が困難である。
【００１５】
以上のような従来例の問題点に鑑み、本件の発明は、作業が容易で抜け易くなく接触信頼性があり、電線の挿入力が軽く、機能が確実な、速結端子の構造を提供することを課題としている。
【００１６】
【課題を解決するための手段】
請求項１では、固定端子１の電線挿入路４５に沿って挿入された電線を板ばねを弾性変形して構成された圧接ばね２０の圧接によって前記固定端子１に電気的接続と機械的接続を行う速結端子装置において、電線接続面４に連接する電線挿入孔７を有する折曲片３を電線接続面４から延出し、折曲片３の先端を係合部８とした固定端子１と、電線接続面４側にばね力で付勢される圧接部２４と、圧接部２４の付勢方向の反対側に設けられ、前記固定端子１の係合部８に係合付勢され、係合時に圧接部２４を前記付勢に抗し電線開放位置に保持する切り起こし係合部２７と、切り起こし係合部２７の近傍に配された引外し部２６と、圧接部２４を付勢に抗して電線開放側に移動させるとともに、切り起こし係合部２７を固定端子１の係合部８に対し係合位置まで移動させる押圧部２９を有し、前記圧接部２４と切り起こし係合部２７の付勢を自己弾性で発生する圧接ばね２０とより成り、基台４０、カバー４２より成る器体の電線挿入孔４４直近から電線挿入方向に向かって電線挿入孔７、電線接続面４となるように固定端子１を配するとともに、固定端子１に対して圧接ばね２０のばね基端を固定し、電線を端子挿入時、電線先端に当接する電線当たり部１１と、前記圧接ばね２０の引外し部２６にはめ合わされる嵌合部１２より成り、電線挿入動作に伴い電線挿入方向に移動して前記固定端子１の係合部８と圧接ばね２０の切り起こし係合部２７の係合を解除し、前記圧接ばね２０の圧接部２４により電線を固定端子１の電線接続面４に圧接させる係合引外しレバー１０を備えた速結端子を提供するようにした。
【００１７】
請求項２では、挿入ストッパ部６を設け、係合引外しレバー１０の電線当たり部裏面が該挿入ストッパ部６に当たることにより、係合引外しレバー１０の動きを規制する請求項１の速結端子を提供するようにした。
【００１８】
請求項３では、前記圧接ばね２０の切り起こし係合部２７の先端部をリセット動作部２８とし該リセット動作部２８に対応する基台４０の部位には、押圧部２９を押圧したときリセット動作部２８が当接し、圧接ばね２０の切り起こし係合部２７が固定端子１の係合部８に係合する方向へ滑り降りる斜部４１を設けた請求項１または請求項２の速結端子を提供するようにした。
【００１９】
【作用】
請求項１の構成によれば、電線が接続されていない状態では固定端子１と圧接ばね２０は係合状態にあるから、圧接ばね２０には電線挿入のための貫通孔が形成される。この貫通孔内に電線を貫挿しながら挿入すると、その電線の先端が係合引外しレバー１０に当たり、内方へ押圧する。この時、係合引外しレバー１０は圧接ばね２０の切り起こし係合部２７を固定端子１の係合部８への係合付勢力に抗して引っ張り、圧接ばね２０と固定端子１の係合を解除する。そして、圧接ばね２０のばね力により圧接部２４は固定端子１の電線接続面４側に付勢され、電線は圧接ばね２０と固定端子１に挟持されて、固定端子１との電気的接続と、機械的接続とが同時に行われる。さらに、請求項１の構造によれば、電線と圧接部２４との位置関係を従来例２と同等に設定することが容易であるため、圧接ばね２０の圧接部２４と、電線の先端の長さを長くとれ電線が容易に外れる等の心配がない。また、固定端子１の電線挿入孔７を形成した折曲端部の係合部８に、圧接ばね２０の切り起こし係合部２７を係合させ、切り起こし係合部２７近傍の引外し部２６を電線の押し込みにより移動する係合引外しレバー１０で、８と２７の係合が解除できるようにしたので、８と２７の係合を解除する際の電線の押し込み力が軽くて済む。
【００２０】
請求項２の構成によれば、係合引外しレバー１０のストッパ部６を設け、電線を挿入した際のレバー１０の移動を規制したので、８と２７の係合を解除後、圧接ばね２０を永久変形させすぎることがなく、電線を強く押しすぎても端子の機能が損なわれることがなく、機能は確実に維持される。
【００２１】
請求項３の構成によれば、圧接ばね２０の切り起こし係合部２７の先端をリセット動作部２８とし、基台４０の対応する位置に斜部４１を設け、圧接部２９を押した際に、８と２７の係合復帰は圧接ばね２０の弾性のみでなくリセット動作部２８と斜部４１の摺動による強制力も加わってより確実となる。
【００２２】
【実施例】
以下、本発明の一実施例を図１〜４に基づいて説明する。
【００２３】
図１は本発明の一実施例による端子装置の内部を示す構造図で、電線を接続していない状態である。図１において、基台４０とカバー４２の間に形成される電線挿入孔４４から固定端子１に沿って電線挿入路４５が形成され、カバー４２には電線接続を解除するための工具挿入孔４３を有している。また、固定端子１は基台４０に設けた溝にはめ込み、カバー４２で押さえるなどして固定されており（図示せず）、固定端子１のコの字部の内側には係合引外しレバー１０が配置されている。さらに、固定端子１の図の上方には圧接ばね２０が配置されており、圧接ばね２０の切り起こし係合部２７は、固定端子のコの字部の一端である係合部８に、電線挿入路４５と直交し図の上向きの復元力を蓄えて係合されている。
【００２４】
固定端子１は図４の（ａ）に示すように、全体として略コの字状に曲折形成されており電線接続面４に連接する電線挿入孔７と、電線挿入孔７の電線接続面４に連接する位置には電線案内片２を形成した。電線接続面４の両端には該電線挿入孔７を有する折曲片３と挿入ストッパ部６を有し、電線挿入孔７が基台４０とカバー４２の間に形成された電線挿入孔４４側に位置するよう基台４０とカバー４２間に配される。なお、５は固定端子１の基台４０への固定部で本例では該固定部５を基台４０へ、ねじ止め、リベット止め、あるいは基台４０とカバー４２で狭持するなどして、固定端子１を基台４０に対し固定するようにしているが、本願の請求の範囲を束縛するものではない。８は、折曲片３の先端に設けた係合部である。前記挿入ストッパ部６は、固定端子１を折曲成形して構成してあるが、基台４０から成形しても良い。
【００２５】
圧接ばね２０は、図４（ｂ）に示すように支持部２１と支持部２１の両端に板状部２３と底部２２を形成し全体をばね材で構成されている。
【００２６】
支持部２１と板状部２３の間の曲げ部を押圧部２９とし板状部２３の押圧部２９に近い順に電線挿入孔２５、切り起こし係合部２７、引外し部２６、先端を曲成したリセット動作部２８を設けてある。２４は電線挿入孔２５の一縁に設けられた圧接部である。
【００２７】
支持部２１に連なる底部２２の端部は凸状に打ち抜かれて、該凸状打ち抜き部は電線挿入孔２５内に位置し電線挿入孔２５を二分割する位置にくるよう全体を曲折形成してある。
【００２８】
圧接ばね２０は底部２２が固定端子１の電線接続面４の裏面に載置され、板状部２３を固定端子１の電線挿入孔７に挿入すると共に、固定端子１の電線案内片２が圧接ばね２０の板状部２３の電線挿入孔２５に貫通して組み合わされる。
【００２９】
このとき、図４（ａ）に示す固定端子１の電線挿入孔７の一部に形成された電線案内片２の根本左右の両縁部に図４（ｂ）に示す圧接ばね２０の電線挿入孔２５の左右の両側部がはまり込んで、図３における固定端子１と圧接ばね２０の電線５０の軸方向の位置関係が定められる。
【００３０】
以上のように固定端子１と圧接ばね２０を組み合わせた状態から押圧部２９を図の上方から下方に押圧すると、まず圧接ばね２０の底部２２が固定端子１の電線接続面４の裏面に密着するとともに圧接ばね曲折加工時に圧接ばね２０の底部２２と板状部２３の交わる角度を固定端子１の折曲片３と電線接続面４の角度に対して適当に設定しておけば板状部２３が固定端子１の折曲片３の曲げを戻す方向に付勢されるので、ついには圧接ばね２０の切り起こし係合部２７は図１のごとく固定端子１の係合部８に係合する。このとき圧接ばね２０は図４（ｂ）に対し底部２２の先端の凸部と圧接部２４（電線挿入孔２５の一縁部）の間は広がった状態で保持され図３のごとく固定端子１の電線挿入孔７に対し圧接ばね２０の電線挿入孔２５がほぼ同一位置となり電線５０を固定端子１のコの字内の電線挿入路４５に挿入可能となる。
【００３１】
係合引外しレバー１０は図４（ｃ）のように略Ｌ字状となっており電線当たり部１１と嵌合部１２を有するアーム部１３からなっている。
【００３２】
図１から図３に示すように係合引外しレバー１０は、基台４０と固定端子１のコの字内で形成される空間に配置されると共に、係合引外しレバー１０の嵌合部１２は圧接ばね２０の切り起こし係合部２７の近傍の引外し部２６に嵌め合わされ、電線挿入の軸方向にのみ移動可能なように基台４０またはその他の部材により支持される。（支持方法の詳細は図示せず）
【００３３】
また、基台４０には図１のように圧接ばね２０のリセット動作部２８に対応する位置に斜部４１を設けてある。
【００３４】
次に、本願の端子装置に電線を接続していない状態について説明する。
【００３５】
前述のように固定端子１に組み付けられた圧接ばね２０は、図１のように、圧接ばね２０の押圧部２９を圧接ばね２０のばね力に抗してさらに押圧することで、切り起こし係合部２７と固定端子１の係合部８が係合した状態となる。
【００３６】
この時、前述の圧接ばね２０の板状部２３の固定端子１の折曲片３を内側から外側へ押す方向への復元力と、板状部２３が図の上方へ復元しようとする力による係合部８と切り起こし係合部２７の摩擦力により、少々の振動等では固定端子１の係合部８と圧接ばね２０の切り起こし係合部２７の係合は外れないようになる。
【００３７】
このように係合された状態では、図３のように、圧接ばね２０の電線挿入孔２５が電線挿入路４５に現れるため、電線５０の挿入が可能となる。
【００３８】
次に、本願の端子装置に電線を接続する方法について説明する。
【００３９】
電線５０は、基台４０とカバー４２の間に形成された電線挿入孔４４から、固定端子１の電線挿入孔７、圧接ばね２０の電線挿入孔２５、電線挿入路４５を通って端子奥へと挿入され、係合引外しレバー１０の電線当たり部１１に当たる。そこからさらに電線５０を挿入していくと、電線５０は係合引外しレバー１０を端子奥へと移動させる。そして、係合引外しレバー１０の移動に合わせて、係合引外しレバー１０の嵌合部１２と嵌合している圧接ばね２０の引外し部２６も、端子奥へと移動し、圧接ばね２０の切り起こし係合部２７と固定端子１の係合部８の係合が外れるまで電線５０が挿入された時、圧接ばね２０の板状部２３の図の上方への復元力により圧接部２４は急激に電線接続面４側に移動し、電線５０を固定端子１の電線接続面４へ瞬時に圧接接続し、図２のように電線５０と固定端子１の電気的接続と機械的接続を完了する。
【００４０】
この構造によると、電線を適切な長さだけ挿入したときにのみ電線が接続され、しかも、図６に示す従来例に対し圧接部２４と電線５０の先端との長さを長くとれるため、電線が容易に抜けることがない上に、電線５０が接続された状態からさらに無理に電線５０を押し込んだ時には、係合引外しレバー１０が挿入ストッパ部６に当たり、それ以上は電線５０を挿入することができないため、圧接ばね２０が変形等を起こす心配がなく、接続の信頼性が高く、繰り返し確実に機能する。
【００４１】
また、本件発明によれば固定端子１の電線接続面４から係合部８を押圧部２９から遠ざけ、係合引外しレバー１０により圧接ばね２０の切り起こし係合部２７近傍の引外し部２６に電線の挿入力が加わるようにしたので圧接ばね２０の押圧部２９から引外し部２６までの長さを図６の従来例に比べ長くとれ、したがって電線の挿入力が小さくても固定端子１の係合部８と圧接ばね２０の切り起こし係合部２７の係合を外して電線の接続を行うことができ電線接続の作業性を向上させることができる。
【００４２】
さらに、圧接部２４が電線５０を圧接する時の打撃音により、電線接続が終了したことを聴覚的に確認することが可能である。
【００４３】
一方、電線５０を外す場合は、前述のように、圧接ばね２０の押圧部２９を工具などでばね力に抗して図の下方に押圧することで、切り起こし係合部２７と固定端子１の係合部８が係合した状態となり、電線５０の圧接は解放され、電線５０を端子装置から容易に引き抜くことができる。
【００４４】
また、接続された電線５０が本願の端子装置から外方にて配線の引き回しの関係や分電盤の筐体へ当接して動きが規制されている場合、押圧部２９を押したのみでは係合引外しレバー１０が図２の状態から左方に移動しにくいが、本願では圧接ばね２０のリセット動作部２８の図の下方の基台４０に斜部４１を設けてあり押圧部２９を工具などで押圧した際、電線の位置規制力に抗して前記リセット動作部２８は斜部４１に強制的にガイドされて係合引外しレバー１０、電線５０ごと図５のように圧接ばね２０の係合部２７が固定端子１の係合部８と係合する位置まで復帰するので確実に電線５０の端子への接続を解除できる。
【００４５】
この構造により、一度、押圧部２９を押圧すれば電線は、確実に接続解放状態になるため、電線を引き抜くとき両手が塞がることがなく、作業性が非常に良い。
【００４６】
【発明の効果】
以上説明したように、請求項１記載の端子装置は、電線を適切な長さだけ挿入したときにのみ電線が接続され、しかも、圧接部２４から電線５０の先端までの長さを長くとれるので、電線の接続信頼性が高くすることができ、電線挿入力も従来例に比べ軽くなり、作業性がよい。
【００４７】
請求項２記載の端子装置は、電線を圧接した状態から無理に電線を押し込んだ時には、係合引外しレバー１０が挿入ストッパ部６に当たり、それ以上は電線を挿入することができなくしたため、圧接ばね２０が永久変形等を起こす心配をなくした。
【００４８】
請求項３記載の端子装置は、一度、押圧部２９を押圧すれば電線は、確実に接続解放状態になるようにしたため、電線を引き抜くとき両手が塞がることがなく、作業性を向上させることができる。
【図面の簡単な説明】
【図１】本発明の実施例を示す端子装置の内部の構造図で、電線を接続する前の状態である。
【図２】本発明の実施例を示す端子装置の内部の構造図で、電線を接続した後の状態である。
【図３】本発明の実施例を示す端子装置の要部斜視図で、電線を接続する前の状態である。
【図４】本発明の実施例を示す端子装置の主要部品の斜視図である。
【図５】本発明の圧接ばねを押圧したときの係合リセット動作の例を示す。
【図６】従来例１として示す速結端子構造を示す。
【図７】従来例２として示す速結端子構造を示す。
【符号の説明】
１固定端子、２電線案内片、３折曲片、４電線接続面、５固定部、６挿入ストッパ部、７電線挿入孔、８係合部、１０係合引外しレバー、１１電線当たり部、１２嵌合部、１３、２０圧接ばね、２１支持部、２２底部、２３板状部、２４圧接部、２５電線挿入孔、２６引外し部、２７切り起こし係合部、２８リセット動作部、２９押圧部、４０基台、４１斜部、４２カバー、４３工具挿入孔、４４電線挿入孔、４５電線挿入路、５０電線[0001]
[Industrial application fields]
The present invention relates to a quick-connection terminal device that uses an insulation spring to connect an electric wire without using a terminal screw or the like.
[0002]
[Prior art]
6 (a) and 6 (b) are side perspective views showing the state before and after the wire connection of the terminal device of the circuit breaker shown in Japanese Utility Model Laid-Open No. 5-87779 shown as Conventional Example 1, and FIG. It is a principal part perspective view of 6 (a).
[0003]
In FIG. 6, reference numerals 61 and 62 denote a base and a cover of the circuit breaker body. The cover 62 is provided with a tool insertion hole 62 a, and a wire insertion path 63 is provided between the base 61 and the cover 62. ing. Reference numeral 64 denotes a fixed terminal attached to the circuit breaker body parallel to the wire insertion path 63, and 65 denotes a pressure contact spring fixed to the fixed terminal 64 by a fixing member 66. The pressure contact spring 65 is a single plate. The spring is bent and includes an attachment portion 65a, a support portion 65b, a plate-like portion 65c, and a locking portion 65d.
[0004]
Further, a through hole 65e is formed in the plate-like portion 65c so as to face the electric wire insertion direction, and the fixed terminal 64 is passed through the through hole 65e. Furthermore, the front end portion of the locking portion 65d is locked in the vicinity of the terminal end portion 64a of the connection surface of the fixed terminal 64, whereby the restoring force of the support portion 65b and the plate-like portion 65c causes the plate-like portion 65c to be shown. The upward movement is restricted.
[0005]
Next, a method for connecting the electric wire 67 to the conventional terminal device as described above will be described. First, as shown in FIG. 6B, the electric wire 67 is inserted into the electric wire insertion path 63, and the tip portion is inserted through the through hole 65 e of the press contact spring 65. Then, the electric wire 67 is further pushed in to release the locking of the locking portion 65d to the end portion 64a. Then, the plate-like portion 65c is pulled upward by the restoring force of the support portion 65b, and the electric wire 67 is pressed against the connection surface of the fixed terminal 64 by the edge portion of the through hole 65e, and the connection of the electric wire 67 is completed.
[0006]
On the other hand, when removing the electric wire 67, if a tool (not shown) such as a screwdriver is inserted from the tool insertion hole 62a, the upper end of the plate-like portion 65c is pressed, and the plate-like portion 65c is pushed down, The portion 65d returns to the original locking position by the restoring force, and the electric wire 7 can be pulled out and the electric wire reconnection preparation is completed.
[0007]
FIG. 7 shows a conventional example 2 as a structure of a terminal device different from the terminal device disclosed in Japanese Utility Model Laid-Open No. 5-87779.
[0008]
FIG. 7 shows a fixed terminal attached in parallel to the electric wire insertion path 72 in the circuit breaker, and 74 shows a pressure contact spring for connecting the electric wire attached to the fixed terminal. As shown in FIG. 5B, the fixed terminal is passed through the through hole 74a of the press contact spring, and the press contact spring is biased upward.
[0009]
When the electric wire is connected, the pressing portion 75 is pushed down in the direction of the arrow, and the electric wire is inserted into the space formed between the fixed terminal and the through hole as shown in FIG. 3C, and the electric wire is pressed against the fixed terminal by the restoring force of the pressure contact spring. .
[0010]
[Problems to be solved by the invention]
In the structure of Conventional Example 2, there is no means for determining whether or not the electric wire has been securely inserted to the back of the terminal, and relies on the operator's intuition. Therefore, even if the connection is poor, the power is used as it is, and the electric wire is disconnected later, and the power supply is stopped. In addition, the electric wire has to be inserted while pressing the pressure contact spring, and both hands are blocked, which makes the operation difficult.
[0011]
On the other hand, in the conventional example 1, although the problem of the conventional example 2 is solved, the length from the pressure contact portion (FIG. 6.65e) of the pressure contact spring that presses the electric wire to the tip of the electric wire is longer than that in the conventional example 2. Due to the shortening of the structure, the contact reliability is lowered, for example, the electric wire is easily pulled out.
[0012]
In Conventional Example 1, the engagement between the press contact spring and the fixed terminal is released by inserting the electric wire against the insertion resistance due to the spring force of the press contact spring, but the insertion force of the electric wire for releasing the engagement is Depending on the length of the undulated portion 65c, it is heavy in the example of FIG.
[0013]
Further, when the electric wire is further inserted into the terminal from the state where the electric wire is connected to the terminal of the conventional example 1 (FIG. 6. (b)), the leaf spring is deformed and the locking portion 65d is terminated. There is a concern that the device may not function as intended, such as the locking of the portion 64a cannot be restored or the pressure contact force of the electric wire to the fixed terminal 64 by the edge of the through hole 65e is weakened.
[0014]
In the terminal of the conventional example 1, the connected electric wire is in a state in which the electric wire is difficult to move around the terminal, such as the movement of the connected electric wire being restricted outside the electric wire insertion hole or interfering with the housing of the distribution board. In this case, even if the pressure spring is pushed down to release the electric wire, the end of the electric wire does not move, and thus the locking of the locking portion 65d to the terminal portion 64a may not be restored. In this case, in order to open the electric wire, it is necessary to pull out the electric wire while pressing the pressure contact spring, and both hands are blocked, and the operation is difficult.
[0015]
In view of the problems of the conventional example as described above, the present invention provides a structure of a quick-connect terminal that is easy to work, does not easily come off, has contact reliability, has a light insertion force, and functions reliably. It is an issue.
[0016]
[Means for Solving the Problems]
In claim 1, electrical connection and mechanical connection are made to the fixed terminal 1 by pressure contact of a pressure spring 20 formed by elastically deforming a leaf spring of an electric wire inserted along the wire insertion path 45 of the fixed terminal 1. In the quick-connect terminal device to be performed, a fixed terminal 1 having a bent piece 3 having an electric wire insertion hole 7 connected to the electric wire connecting surface 4 extending from the electric wire connecting surface 4 and having the end of the bent piece 3 as an engaging portion 8; A pressure contact portion 24 biased by the spring force on the wire connection surface 4 side, and provided on the opposite side of the pressure contact portion 24 in the biasing direction, and is engaged and biased by the engagement portion 8 of the fixed terminal 1. A cut-and-raised engagement portion 27 that resists the urging and holds the wire opening position at the time of the engagement, a tripping portion 26 disposed in the vicinity of the cut-and-raised engagement portion 27, and urges the pressure contacting portion 24. Against the open side of the wire, and the cut-and-raised engagement portion 27 is moved to the engagement portion 8 of the fixed terminal 1. And a pressing portion 29 that moves to the engaging position, and includes the pressing portion 24 and the pressing spring 20 that cuts and raises the engaging portion 27 by self-elasticity, and includes a base 40 and a cover 42. The fixed terminal 1 is arranged so that the electric wire insertion hole 7 and the electric wire connection surface 4 are located in the direction of electric wire insertion from the position close to the electric wire insertion hole 44 of the body, and the spring proximal end of the pressure contact spring 20 is fixed to the fixed terminal 1 When the wire is inserted into the terminal, the wire contact portion 11 comes into contact with the tip of the wire and the fitting portion 12 is fitted to the tripping portion 26 of the pressure contact spring 20 and moves in the wire insertion direction along with the wire insertion operation. Then, the engagement between the engaging portion 8 of the fixed terminal 1 and the cut-and-raised engagement portion 27 of the pressure contact spring 20 is released, and the wire is pressed against the wire connection surface 4 of the fixed terminal 1 by the pressure contact portion 24 of the pressure contact spring 20. With an engagement trip lever 10 And to provide a binding terminal.
[0017]
According to a second aspect of the present invention, the insertion stopper portion 6 is provided, and the back of the contact portion of the electric wire of the engagement releasing lever 10 abuts against the insertion stopper portion 6 to restrict the movement of the engagement releasing lever 10. Provided a terminal.
[0018]
In claim 3, the tip end portion of the cut-and-raised engagement portion 27 of the pressure spring 20 is set as the reset operation portion 28, and the reset operation is performed when the pressing portion 29 is pressed to the portion of the base 40 corresponding to the reset operation portion 28. 3. The quick connection terminal according to claim 1 or 2, further comprising a slant portion 41 that abuts the portion 28 and slides down in a direction in which the cut-and-raised engagement portion 27 of the press contact spring 20 engages with the engagement portion 8 of the fixed terminal 1. Provided.
[0019]
[Action]
According to the configuration of the first aspect, since the fixed terminal 1 and the press contact spring 20 are in an engaged state when the electric wire is not connected, the press contact spring 20 is formed with a through hole for inserting the electric wire. When the electric wire is inserted into the through hole while being inserted, the tip of the electric wire hits the engagement releasing lever 10 and presses inward. At this time, the engagement trip lever 10 pulls and raises the engagement portion 27 of the pressure contact spring 20 against the engagement biasing force of the fixed terminal 1 to the engagement portion 8, and the engagement of the pressure contact spring 20 and the fixed terminal 1. Release the match. Then, the pressure contact portion 24 is urged toward the wire connection surface 4 side of the fixed terminal 1 by the spring force of the pressure contact spring 20, and the electric wire is sandwiched between the pressure contact spring 20 and the fixed terminal 1 to be electrically connected to the fixed terminal 1. The mechanical connection is performed simultaneously. Furthermore, according to the structure of claim 1, since it is easy to set the positional relationship between the electric wire and the press contact portion 24 to be equal to that of the conventional example 2, the press contact portion 24 of the press contact spring 20 and the length of the tip of the electric wire are set. There is no worry that the cable can be removed for a long time. In addition, the cut-and-raised engagement portion 27 of the pressure contact spring 20 is engaged with the engagement portion 8 of the bent end portion where the wire insertion hole 7 of the fixed terminal 1 is formed, and the tripping portion in the vicinity of the cut-and-raised engagement portion 27 is engaged. Since the engagement release lever 10 that moves the cable 26 by pushing the electric wire 26 can release the engagement between 8 and 27, the pushing force of the electric wire when releasing the engagement between 8 and 27 can be reduced.
[0020]
According to the second aspect of the present invention, since the stopper portion 6 of the engagement releasing lever 10 is provided to restrict the movement of the lever 10 when the electric wire is inserted, the pressure contact spring 20 is released after the engagement of 8 and 27 is released. Is not permanently deformed, and even if the electric wire is pressed too strongly, the function of the terminal is not impaired, and the function is reliably maintained.
[0021]
According to the configuration of claim 3, when the tip of the cut-and-raised engagement portion 27 of the press contact spring 20 is used as the reset operation portion 28, the inclined portion 41 is provided at the corresponding position of the base 40, and the press contact portion 29 is pushed. , 8 and 27 are more reliably applied not only by the elasticity of the press contact spring 20 but also by a forcing force due to the sliding of the reset operation portion 28 and the inclined portion 41.
[0022]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
[0023]
FIG. 1 is a structural diagram showing the inside of a terminal device according to an embodiment of the present invention, in a state where no electric wires are connected. In FIG. 1, an electric wire insertion path 45 is formed along the fixed terminal 1 from an electric wire insertion hole 44 formed between the base 40 and the cover 42, and a tool insertion hole 43 for releasing the electric wire connection is formed in the cover 42. have. The fixed terminal 1 is fixed in a groove provided in the base 40 by being pressed by a cover 42 (not shown), and an engagement release lever is provided inside the U-shaped portion of the fixed terminal 1. 10 is arranged. Further, the pressure contact spring 20 is disposed above the fixed terminal 1 in the figure, and the cut-and-raised engagement portion 27 of the pressure contact spring 20 is connected to the engagement portion 8 which is one end of the U-shaped portion of the fixed terminal. It is engaged with the restoring force that is orthogonal to the insertion path 45 and stores an upward restoring force.
[0024]
As shown in FIG. 4A, the fixed terminal 1 is bent in a substantially U shape as a whole, and has a wire insertion hole 7 connected to the wire connection surface 4 and a wire connection surface 4 of the wire insertion hole 7. The wire guide piece 2 was formed at a position connected to the wire. At both ends of the wire connection surface 4, the bent piece 3 having the wire insertion hole 7 and the insertion stopper portion 6 are provided, and the wire insertion hole 7 is formed between the base 40 and the cover 42. It is arranged between the base 40 and the cover 42 so as to be located at the center. Reference numeral 5 denotes a fixing portion of the fixed terminal 1 to the base 40. In this example, the fixing portion 5 is fixed to the base 40 with screws, rivets, or sandwiched between the base 40 and the cover 42. Although the fixed terminal 1 is fixed to the base 40, the scope of the claims of the present application is not bound. Reference numeral 8 denotes an engaging portion provided at the tip of the bent piece 3. The insertion stopper portion 6 is formed by bending the fixed terminal 1, but may be formed from the base 40.
[0025]
As shown in FIG. 4B, the press contact spring 20 is formed of a spring material by forming a plate portion 23 and a bottom portion 22 at both ends of the support portion 21 and the support portion 21.
[0026]
The bending portion between the support portion 21 and the plate-like portion 23 is a pressing portion 29, and the electric wire insertion hole 25, the cut-and-raft engagement portion 27, the tripping portion 26, and the tip are bent in order from the pressing portion 29 of the plate-like portion 23. The reset operation unit 28 is provided. Reference numeral 24 denotes a pressure contact portion provided on one edge of the electric wire insertion hole 25.
[0027]
The end of the bottom portion 22 connected to the support portion 21 is punched into a convex shape, and the convex punched portion is located in the electric wire insertion hole 25 so as to be bent to divide the electric wire insertion hole 25 into two parts. is there.
[0028]
The pressure contact spring 20 has a bottom portion 22 placed on the back surface of the wire connection surface 4 of the fixed terminal 1 and inserts the plate-like portion 23 into the wire insertion hole 7 of the fixed terminal 1 while the wire guide piece 2 of the fixed terminal 1 is pressure contacted. The spring 20 is combined through the wire insertion hole 25 of the plate-like portion 23 of the spring 20.
[0029]
At this time, the wire insertion of the pressure spring 20 shown in FIG. 4B is inserted into both the left and right edges of the wire guide piece 2 formed in a part of the wire insertion hole 7 of the fixed terminal 1 shown in FIG. The left and right side portions of the hole 25 are fitted, and the positional relationship in the axial direction of the electric wire 50 between the fixed terminal 1 and the pressure contact spring 20 in FIG.
[0030]
As described above, when the pressing portion 29 is pressed downward from the upper side of the drawing from the state where the fixed terminal 1 and the pressure contact spring 20 are combined, first, the bottom portion 22 of the pressure contact spring 20 comes into close contact with the back surface of the wire connection surface 4 of the fixed terminal 1. At the same time, if the angle at which the bottom portion 22 and the plate-like portion 23 of the pressure-contact spring 20 intersect is appropriately set with respect to the angle of the bent piece 3 of the fixed terminal 1 and the wire connection surface 4 at the time of bending the pressure-contact spring 20, the plate-like portion 23. Is urged in a direction to return the bent piece 3 of the fixed terminal 1 to be bent, and finally, the cut-and-raised engagement portion 27 of the pressure contact spring 20 is engaged with the engagement portion 8 of the fixed terminal 1 as shown in FIG. . At this time, the pressure contact spring 20 is held in a state where the space between the convex portion at the tip of the bottom portion 22 and the pressure contact portion 24 (one edge portion of the wire insertion hole 25) is expanded as shown in FIG. 4B. The electric wire insertion hole 25 of the pressure contact spring 20 is substantially in the same position as the electric wire insertion hole 7, and the electric wire 50 can be inserted into the electric wire insertion path 45 in the U-shape of the fixed terminal 1.
[0031]
The engagement / release lever 10 is substantially L-shaped as shown in FIG. 4C and includes an arm portion 13 having a wire contact portion 11 and a fitting portion 12.
[0032]
As shown in FIGS. 1 to 3, the engagement trip lever 10 is disposed in a space formed in the U-shape of the base 40 and the fixed terminal 1, and the fitting portion of the engagement trip lever 10. 12 is fitted into a tripping portion 26 in the vicinity of the cut-and-raised engagement portion 27 of the pressure spring 20 and supported by the base 40 or other member so as to be movable only in the axial direction of electric wire insertion. (Details of support method not shown)
[0033]
Further, as shown in FIG. 1, the base 40 is provided with an inclined portion 41 at a position corresponding to the reset operation portion 28 of the press contact spring 20.
[0034]
Next, a state where no electric wire is connected to the terminal device of the present application will be described.
[0035]
As described above, the press contact spring 20 assembled to the fixed terminal 1 is cut and raised by further pressing the pressing portion 29 of the press contact spring 20 against the spring force of the press contact spring 20 as shown in FIG. The portion 27 and the engaging portion 8 of the fixed terminal 1 are engaged.
[0036]
At this time, due to the restoring force in the direction of pushing the bent piece 3 of the fixed terminal 1 of the plate-like portion 23 of the pressure spring 20 from the inside to the outside, and the force that the plate-like portion 23 tries to restore upward in the figure. Due to the frictional force of the engaging portion 8 and the raised engaging portion 27, the engagement of the engaging portion 8 of the fixed terminal 1 and the raised raised engagement portion 27 of the press contact spring 20 is not disengaged by a slight vibration or the like.
[0037]
In this engaged state, the electric wire 50 can be inserted because the electric wire insertion hole 25 of the press contact spring 20 appears in the electric wire insertion path 45 as shown in FIG.
[0038]
Next, a method for connecting an electric wire to the terminal device of the present application will be described.
[0039]
The electric wire 50 passes from the electric wire insertion hole 44 formed between the base 40 and the cover 42 to the inner side of the terminal through the electric wire insertion hole 7 of the fixed terminal 1, the electric wire insertion hole 25 of the press contact spring 20, and the electric wire insertion path 45. And hits the wire contact portion 11 of the engagement trip lever 10. When the electric wire 50 is further inserted from there, the electric wire 50 moves the engaging and releasing lever 10 to the back of the terminal. In accordance with the movement of the engagement trip lever 10, the trip portion 26 of the press contact spring 20 fitted to the fitting portion 12 of the engagement trip lever 10 also moves to the back of the terminal, and the press contact spring. When the electric wire 50 is inserted until the engagement between the cut-and-raised engagement portion 27 and the engagement portion 8 of the fixed terminal 1 is disengaged, the pressure contact portion is caused by the upward restoring force of the plate-like portion 23 of the pressure contact spring 20 in the drawing. 24 suddenly moves to the wire connection surface 4 side, and the electric wire 50 is instantaneously pressure-connected to the wire connection surface 4 of the fixed terminal 1, and the electric connection and mechanical connection between the electric wire 50 and the fixed terminal 1 as shown in FIG. 2. To complete.
[0040]
According to this structure, the electric wire is connected only when the electric wire is inserted by an appropriate length, and the length between the press contact portion 24 and the tip of the electric wire 50 can be made longer than the conventional example shown in FIG. When the electric wire 50 is further forcibly pushed from the state where the electric wire 50 is connected, the engagement releasing lever 10 hits the insertion stopper portion 6 and the electric wire 50 is inserted further than that. Therefore, there is no fear that the pressure contact spring 20 is deformed, the connection is highly reliable, and functions repeatedly and reliably.
[0041]
Further, according to the present invention, the engaging portion 8 is moved away from the pressing portion 29 from the wire connection surface 4 of the fixed terminal 1, and the pulling portion 26 in the vicinity of the engaging portion 27 is raised and cut off by the engagement releasing lever 10. Since the insertion force of the electric wire is applied to the cable, the length from the pressing portion 29 of the pressure contact spring 20 to the tripping portion 26 can be made longer than that of the conventional example of FIG. The engagement between the engaging portion 8 and the press-contact spring 20 is disengaged from the engaging portion 27 so that the electric wire can be connected, and the workability of the electric wire connection can be improved.
[0042]
Furthermore, it is possible to aurally confirm that the wire connection is completed by a striking sound when the pressure contact portion 24 presses the wire 50.
[0043]
On the other hand, when the electric wire 50 is removed, as described above, the pressing portion 29 of the press contact spring 20 is pressed downward with respect to the spring force with a tool or the like, thereby cutting and raising the engaging portion 27 and the fixed terminal 1. The engagement portion 8 is engaged, the pressure contact of the electric wire 50 is released, and the electric wire 50 can be easily pulled out from the terminal device.
[0044]
In addition, when the connected electric wire 50 is restricted from moving out of contact with the terminal device of the present application, or when the movement is restricted by contact with the casing of the distribution board, it is not necessary to simply press the pressing portion 29. Although it is difficult for the pull / release lever 10 to move to the left from the state of FIG. 2, in this application, the inclined portion 41 is provided on the base 40 below the figure of the reset operation portion 28 of the press contact spring 20, and the pressing portion 29 is used as a tool. When the pressing operation is performed by, for example, the reset operation portion 28 is forcibly guided by the inclined portion 41 against the position regulating force of the electric wire, and the engagement pulling lever 10 and the electric wire 50 together with the press contact spring 20 as shown in FIG. Since the engaging portion 27 returns to the position where it engages with the engaging portion 8 of the fixed terminal 1, the connection of the electric wire 50 to the terminal can be reliably released.
[0045]
With this structure, once the pressing portion 29 is pressed, the wire is reliably connected and released, so both hands are not blocked when the wire is pulled out, and the workability is very good.
[0046]
【The invention's effect】
As described above, in the terminal device according to claim 1, since the electric wire is connected only when the electric wire is inserted by an appropriate length, and the length from the press contact portion 24 to the tip of the electric wire 50 can be increased. The connection reliability of the electric wire can be increased, the electric wire insertion force is lighter than the conventional example, and the workability is good.
[0047]
In the terminal device according to claim 2, when the electric wire is forcibly pushed from the state in which the electric wire is pressed, the engagement releasing lever 10 hits the insertion stopper portion 6, and the electric wire cannot be inserted any more. The concern about the spring 20 causing permanent deformation and the like has been eliminated.
[0048]
In the terminal device according to claim 3, once the pressing portion 29 is pressed, the electric wire is reliably connected and released, so that both hands are not blocked when the electric wire is pulled out, thereby improving workability. it can.
[Brief description of the drawings]
FIG. 1 is an internal structural diagram of a terminal device according to an embodiment of the present invention, showing a state before connecting electric wires.
FIG. 2 is a structural diagram of the inside of a terminal device showing an embodiment of the present invention, after a wire is connected.
FIG. 3 is a perspective view of a main part of a terminal device showing an embodiment of the present invention, and shows a state before connecting wires.
FIG. 4 is a perspective view of main components of a terminal device showing an embodiment of the present invention.
FIG. 5 shows an example of an engagement reset operation when the pressure contact spring of the present invention is pressed.
FIG. 6 shows a quick connection terminal structure shown as Conventional Example 1;
FIG. 7 shows a quick connection terminal structure shown as Conventional Example 2;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Fixed terminal, 2 Electric wire guide piece, 3 Bending piece, 4 Electric wire connection surface, 5 Fixed part, 6 Insertion stopper part, 7 Electric wire insertion hole, 8 Engagement part, 10 Engagement release lever, 11 Electric wire contact part, 12 fitting part, 13, 20 pressure contact spring, 21 support part, 22 bottom part, 23 plate-like part, 24 pressure contact part, 25 wire insertion hole, 26 tripping part, 27 cut-and-raise engagement part, 28 reset operation part, 29 Press part, 40 base, 41 oblique part, 42 cover, 43 tool insertion hole, 44 electric wire insertion hole, 45 electric wire insertion path, 50 electric wire

Claims

A quick-connection terminal device that performs electrical connection and mechanical connection to the fixed terminal 1 by press-contact of a press-contact spring 20 formed by elastically deforming a leaf spring of an electric wire inserted along the wire insertion path 45 of the fixed terminal 1. In FIG. 2, the bent piece 3 having the wire insertion hole 7 connected to the electric wire connecting surface 4 is extended from the electric wire connecting surface 4, and the fixed terminal 1 having the end of the bent piece 3 as the engaging portion 8; A pressure contact portion 24 biased by a spring force on the side, and provided on the opposite side of the pressure contact portion 24 in the biasing direction, and is engaged and biased by the engagement portion 8 of the fixed terminal 1. Against the above-mentioned urging force, the cut-and-raised engagement portion 27 which holds the wire open position, the tripping portion 26 disposed in the vicinity of the cut-and-raised engagement portion 27, and the pressure contact portion 24 against the urging force. While moving to the open side, the cut-and-raised engagement portion 27 is moved to the engagement position with respect to the engagement portion 8 of the fixed terminal 1. An electric wire insertion hole of a container comprising a base 40 and a cover 42, having a pressing portion 29 to be moved, and comprising a pressing spring 20 that cuts and raises the pressing portion 24 and self-elastically biases the engaging portion 27. The fixed terminal 1 is arranged so that the wire insertion hole 7 and the wire connection surface 4 are located in the direction from which the wire is inserted from the nearest position 44, and the spring proximal end of the pressure contact spring 20 is fixed to the fixed terminal 1 to At the time of insertion, it is composed of a wire contact portion 11 that abuts on the tip of the wire, and a fitting portion 12 fitted to the tripping portion 26 of the press contact spring 20, and moves in the wire insertion direction along with the wire insertion operation to move the fixed terminal 1 The engagement release lever that releases the engagement between the engagement portion 8 of the pressure contact spring 20 and the raised engagement portion 27 of the pressure contact spring 20 and presses the electric wire against the wire connection surface 4 of the fixed terminal 1 by the pressure contact portion 24 of the pressure contact spring 20. It is characterized by having 10 Hayayui terminal.

2. The movement of the engagement trip lever 10 is restricted by providing an insertion stopper portion 6 and the back surface of the wire contact portion 11 of the engagement trip lever 10 hitting the insertion stopper portion 6. Fast connection terminal.

When the pressing portion 29 is pressed, the reset operation portion 28 comes into contact with the portion of the base 40 corresponding to the reset operation portion 28. 3. The quick-connecting terminal according to claim 1 or 2, further comprising a slant portion 41 that slides down in a direction in which the cut-and-raised engagement portion 27 of the press contact spring 20 engages with the engagement portion 8 of the fixed terminal 1.