JP4100979B2

JP4100979B2 - Connection method and connecting part of flat cable and flat cable connector

Info

Publication number: JP4100979B2
Application number: JP2002195438A
Authority: JP
Inventors: 憲嗣榎本
Original assignee: Furukawa Electric Co Ltd
Current assignee: Furukawa Electric Co Ltd
Priority date: 2002-07-04
Filing date: 2002-07-04
Publication date: 2008-06-11
Anticipated expiration: 2022-07-04
Also published as: JP2004039464A

Description

【０００１】
【発明の属する技術分野】
本発明は、電気機器や自動車等の電気配線に使用されるフラットケーブルとフラットケーブル接続金具の接続方法及び接続部に関するものである。
【０００２】
【従来の技術】
電気機器や自動車等の電気配線に、図９に示すように、フラット導体１にフラット絶縁被覆２を被覆したフラットケーブル３が使用されるようになってきている。このフラットケーブル３のフラット導体１としては、例えば銅やアルミニュウム等により例えば厚さが0.15ｍｍ〜0.2 ｍｍ、幅が1.5 ｍｍ〜3.0 ｍｍに形成された帯状導体が用いられている。フラット絶縁被覆２は、例えばポリエチレンテレフタレートの如きプラスチックで形成されている。
【０００３】
このようなフラットケーブル３に対するフラットケーブル接続金具４の接続方法として、図９に示すような圧抜き型の接続方法が提案されている。
【０００４】
フラットケーブル接続金具４は、例えば金属製の雌型の嵌め合わせ接続体５に一端の縁部に同じ金属製の接続板部６が連接された構造になっている。
【０００５】
圧抜き型の接続方法では、フラットケーブル接続金具４は、接続すべきフラットケーブル３の端部でフラット導体１に対応させて下面に接続板部６を重ねて重ね合わせ部７を形成する。
【０００６】
この重ね合わせ部７に、図１０に示すフラットケーブル接続装置８で圧抜き加工を行って接続部９を形成する。
【０００７】
フラットケーブル接続装置８は、先端に円弧状の凸型刃部１０を有する凸刃型１１と、この凸型刃部１０が嵌まり合う凹型刃部１２を先端に開口させた凹刃型１３とで構成されている。
【０００８】
このフラットケーブル接続装置８では、これら凸型刃部１０と凹型刃部１２とで上下から噛み合わせて、図１１乃至図１３に示すように重ね合せ部７に凸型刃部１０の切込みにより平行に２本の切れ目１４を入れて突き抜けさせ、これに伴って凸型刃部１０の突き出しにより２本の切れ目１４の間の部分１５を、相対的にその幅方向の両側の部分１６に対して重ね合せ部７の積層方向に段違いにする。
【０００９】
かくして、切れ目１４の長手方向の端部に図１３に示すように接続板部６とフラット導体１とが相互に接触した接触部１７が形成され、フラット導体１にフラットケーブル接続金具４が電気的，機械的に接続された接続部９が得られる。この場合、２本の切れ目１４の間の部分１５の突き出し方向の頂上付近の横断面図は図１２のようになっていて、接続板部６とフラット導体１とは相互に接触していない。
【００１０】
このような圧抜き型の接続方法によれば、図１０に示すような簡単な構造のフラットケーブル接続装置８を用いて、接続部９を簡単に形成することができる。また、この接続方法によれば、フラット導体１の幅が狭くなってきても、容易に実施することができる。
【００１１】
また、圧抜き型の接続方法の他の例として、図１４に示すように、平行に並設した複数本のフラット導体１ａにフラット絶縁被覆２ａを一括して被覆したフラットケーブル３Ａと、平行に並設した複数本のフラット導体１ｂにフラット絶縁被覆２ｂを一括して被覆したフラットケーブル３Ｂとを接続する方法がある。
【００１２】
この圧抜き型の接続方法では、フラットケーブル３Ａ，３Ｂをそれぞれの端部を図示のように向かい合わせて配置する。かかる状態で、相互のフラット導体１ａ，１ｂに対応した位置で両フラットケーブル３Ａ，３Ｂの上面に跨がらせて、接続板部６を主体とするフラットケーブル接続金具４の該接続板部６を重ねて重ね合わせ部７を形成する。
【００１３】
各フラットケーブル３Ａ，３Ｂ側の重ね合わせ部７の位置で、前述した図１０に示すフラットケーブル接続装置８を用いて、同様にして重ね合せ部７に平行に２本の切れ目１４を入れて突き抜けさせ、これに伴って凸型刃部１０の突き出しにより２本の切れ目１４の間の部分１５を、相対的にその幅方向の両側の部分１６に対して重ね合せ部７の積層方向に段違いにして、切れ目１４の長手方向の端部に図１５に示すように接続板部６とフラット導体１とが相互に接触した接触部１７を形成し、フラットケーブル３Ａ，３Ｂのフラット導体１ａ，１ｂを相互に電気的，機械的に接続した接続部９を得る。
【００１４】
【発明が解決しようとする課題】
しかしながら、このような圧抜き型の接続方法では、フラット導体１と接続板部６との剪断された新生面がお互いに接触するものの、その接触面を拡大して見ると、例えば図１６に示すように、フラット導体１と接続板部６との接触面が無数の接触点１８の集合として形成されていて、電気的に有利な例えば図１７に示すようなガスタイト状の連続した接合面１９として形成されていない。従って、通常の接続位置では、従来方法による接続であっても問題はないが、より安全を要求される回路や配線作業上で乱暴な扱いを受ける回路での接続では、さらに電気的接触度が高く、信頼性の高い接続が求められている。
【００１５】
本発明の目的は、電気的接触度が高く、信頼性の高い接続状態となるフラットケーブルとフラットケーブル接続金具の接続方法及び接続部を提供することにある。
【００１６】
【課題を解決するための手段】
上記の目的を達成する本発明の各手段を示すと、次の通りである。
【００１７】
本発明は、フラット導体がフラット絶縁被覆で被覆されたフラットケーブルのフラット導体の箇所で、前記フラットケーブルにフラットケーブル接続金具の接続板部を重ねて重ね合わせ部を形成した後、該重ね合わせ部に少なくとも１本の切れ目を入れるとともに該切れ目に直交する両側の部分を段違いにして、該切れ目の長手方向に沿った端部にフラット導体と接続板部とが相互に接触した接触部を設けるフラットケーブルとフラットケーブル接続金具の接続方法を対象とする。
【００１８】
本発明に係るフラットケーブルとフラットケーブル接続金具の接続方法では、表面にメッキ層を設けた接続板部を用い、重ね合わせ部に切れ目を入れた際に形成される、メッキ層の剪断によるメッキ層延伸部をフラット導体と接続板部との接続面間に介在させて接触部を構成することを特徴とする。
【００１９】
また本発明は、フラット導体がフラット絶縁被覆で被覆されたフラットケーブルのフラット導体の箇所で、フラットケーブルにケーブル接続金具の接続板部が重ねられて重ね合わせ部が形成され、該重ね合わせ部に少なくとも１本の切れ目が入れられるとともに該切れ目に直交する両側の部分が段違いにされて、該切れ目の長手方向に沿った端部にフラット導体と接続板部とが相互に接触した接触部が設けられているフラットケーブルとフラットケーブル接続金具の接続部を対象とする。
【００２０】
本発明に係るフラットケーブルとフラットケーブル接続金具の接続部では、表面にメッキ層を設けた接続板部が用いられ、重ね合わせ部に切れ目を入れた際に形成されたメッキ層の剪断によるメッキ層延伸部がフラット導体と接続板部との接続面間に介在されて接触部が構成されていることを特徴とする。
【００２１】
また本発明は、フラット導体がフラット絶縁被覆で被覆されたフラットケーブルのフラット導体の箇所で、フラットケーブルにフラットケーブル接続金具の接続板部を重ねて重ね合わせ部を形成した後、該重ね合わせ部に少なくとも１本の切れ目を入れるとともに、該切れ目に直交する両側の部分を段違いにして、該切れ目の長手方向に沿った端部にフラット導体と接続板部とが相互に接触した接触部を設けるフラットケーブルとフラットケーブル接続金具の接続方法を対象とする。
【００２２】
本発明に係るフラットケーブルとフラットケーブル接続金具の接続方法では、フラットケーブルと接続板部との重ね合わせ面間にメッキ材シートを介在させて重ね合わせ部を構成し、該重ね合わせ部に切れ目を入れた際に形成されるメッキ材シートの剪断によるメッキ層延伸部をフラット導体と接続板部との接続面間に介在させて接触部を構成することを特徴とする。
【００２３】
また本発明は、フラット導体がフラット絶縁被覆で被覆されたフラットケーブルのフラット導体の箇所で、フラットケーブルにフラットケーブル接続金具の接続板部が重ね合わされて重ね合わせ部が形成され、該重ね合わせ部に少なくとも１本の切れ目が入れられるとともに該切れ目に直交する両側の部分が段違いにされて、該切れ目の長手方向に沿った端部にフラット導体と接続板部とが相互に接触した接触部が設けられているフラットケーブルとフラットケーブル接続金具の接続部を対象とする。
【００２４】
本発明に係るフラットケーブルとフラットケーブル接続金具の接続部では、フラットケーブルと接続板部との重ね合わせ面間にメッキ材シートが介在されて重ね合わせ部が構成され、該重ね合わせ部に切れ目を入れた際に形成されたメッキ材シートの剪断によるメッキ層延伸部がフラット導体と接続板部との接続面間に介在されて接触部が構成されていることを特徴とする。
【００２５】
また本発明は、フラット導体がフラット絶縁被覆で被覆された複数のフラットケーブルを、それぞれの端部を向かい合わせて配置し、端部が向かい合った複数のフラットケーブルのそれぞれのフラット導体に対応した位置で該複数のフラットケーブルに跨らせてフラットケーブル接続金具の接続板部を重ねて重ね合わせ部を形成し、各フラットケーブルのフラット導体の箇所で前記重ね合せ部に少なくとも１本の切れ目を入れるとともに、各切れ目に直交する両側の部分をそれぞれ段違いにして、各切れ目の長手方向に沿った端部にフラット導体と接続板部とが相互に接触した接触部をそれぞれ設けるフラットケーブルとフラットケーブル接続金具の接続方法を対象とする。
【００２６】
本発明に係るフラットケーブルとフラットケーブル接続金具の接続方法では、表面にメッキ層を設けた接続板部を用い、重ね合わせ部に各切れ目を入れた際に形成されるメッキ層の剪断によるメッキ層延伸部をフラット導体と接続板部との接続面間に介在させて接触部を構成することを特徴とする。
【００２７】
また本発明は、フラット導体がフラット絶縁被覆で被覆された複数のフラットケーブルがそれぞれの端部を向かい合わせて配置され、端部が向かい合った複数のフラットケーブルのそれぞれのフラット導体に対応した位置で該複数のフラットケーブルに跨がらせてフラットケーブル接続金具の接続板部が重ねられて重ね合わせ部が形成され、各フラットケーブルのフラット導体に対応する箇所で前記重ね合せ部に少なくとも１本の切れ目が入れられるとともに、各切れ目に直交する両側の部分がそれぞれ段違いにされて、各切れ目の長手方向に沿った端部に前記フラット導体と前記接続板部とが相互に接触した接触部が設けられているフラットケーブルとフラットケーブル接続金具の接続部を対象とする。
【００２８】
本発明に係るフラットケーブルとフラットケーブル接続金具の接続部では、表面にメッキ層を設けた接続板部が用いられ、重ね合わせ部に各切れ目を入れた際に形成されたメッキ層の剪断によるメッキ層延伸部がフラット導体と接続板部との接続面間に介在されて接触部が構成されていることを特徴とする。
【００２９】
また本発明は、フラット導体がフラット絶縁被覆で被覆された複数のフラットケーブルをそれぞれの端部を向かい合わせて配置し、端部が向かい合った複数のフラットケーブルのそれぞれのフラット導体に対応した位置で該複数のフラットケーブルに跨らせてフラットケーブル接続金具の接続板部を重ねて重ね合わせ部を形成し、各フラットケーブルのフラット導体に対応した箇所で前記重ね合わせ部に少なくとも１本の切れ目を入れるとともに各切れ目に直交する両側の部分をそれぞれ段違いにして、各切れ目の長手方向に沿った端部にフラット導体と接続板部とが相互に接触した接触部をそれぞれ設けるフラットケーブルとフラットケーブル接続金具の接続方法を対象とする。
【００３０】
本発明に係るフラットケーブルとフラットケーブル接続金具の接続方法では、フラットケーブルと接続板部との重ね合わせ面間にメッキ材シートを介在させて重ね合わせ部を構成し、該重ね合わせ部に切れ目を入れた際に形成されるメッキ材シートの剪断によるメッキ層延伸部をフラット導体と接続板部との接続面間に介在させて接触部を構成することを特徴とする。
【００３１】
また本発明は、フラット導体がフラット絶縁被覆で被覆された複数のフラットケーブルがそれぞれの端部を向かい合わせて配置され、端部が向かい合った複数のフラットケーブルのそれぞれのフラット導体に対応した位置で該複数のフラットケーブルに跨らせてフラットケーブル接続金具の接続板部が重ねられて重ね合わせ部が形成され、各フラットケーブルのフラット導体に対応した箇所で前記重ね合わせ部に少なくとも１本の切れ目が入れられるとともに各切れ目に直交する両側の部分がそれぞれ段違いにされて、前記各切れ目の長手方向に沿った端部に前記フラット導体と前記接続板部とが相互に接触した接触部がそれぞれ設けられているフラットケーブルとフラットケーブル接続金具の接続部を対象とする。
【００３２】
本発明に係るフラットケーブルとフラットケーブル接続金具の接続部では、フラットケーブルと前記接続板部との重ね合わせ面間にメッキ材シートが介在されて重ね合わせ部が構成され、該重ね合わせ部に切れ目を入れた際に形成されたメッキ材シートの剪断によるメッキ層延伸部がフラット導体と接続板部との接続面間に介在されて接触部が構成されていることを特徴とする。
【００３３】
上記の各発明で、接続板部の表面に設けるメッキ層は、接続板部の硬度より軟質のメッキ層とする必要がある。
【００３４】
このように、重ね合わせ部に各切れ目を入れた際に形成されたメッキ層の剪断によるメッキ層延伸部がフラット導体と接続板部との接続面間に介在されて接触部が構成されるか、または重ね合わせ部に切れ目を入れた際に形成されたメッキ材シートの剪断によるメッキ層延伸部がフラット導体と接続板部との接続面間に介在されて接触部が構成されると、軟質金属のメッキ層延伸部を間にしてフラット導体と接続板部とが接触されるので、電気的接触度が高く、信頼性の高い接続状態となるフラットケーブルとフラットケーブル接続金具の接続方法及び接続部を得ることができる。
【００３５】
また、本発明のフラットケーブルとフラットケーブル接続金具の接続方法では、前述した構造の接触部に通電加熱処理を施すか、または該接触部に不活性ガス中で加熱処理を施すことが好ましい。
【００３６】
このような加熱処理が行われると、加熱による導体の軟化若しくは微細溶融によって完全な接合面、即ちガスタイト状面積が拡大し、より電気的に安定した電気的接続性能の高い接続部を得ることができる。
【００３７】
なお、本発明でメッキ層延伸部とは、メッキ層の剪断時に、このメッキ層が剪断されるまで延びて延伸された部分をいう。
【００３８】
また、本発明でメッキ材シートとは、メッキ層そのもののシートでもよいし、金属シートの表面にメッキ層が被覆されたものでもよい。
【００３９】
【発明の実施の形態】
図１及び図２は本発明に係るフラットケーブルとフラットケーブル接続金具の接続方法及び接続部の実施の形態の第１例を示したもので、図１は本例のフラットケーブルとフラットケーブル接続金具の接続方法で接続されたフラットケーブルとフラットケーブル接続金具の接続部で、図９のＡ−Ａ線断面図に相当する縦断面図、図２は図９のＣ−Ｃ線断面図に相当する横断面図である。
【００４０】
本例では、フラットケーブル接続金具４の少なくとも接続板部６の片面（本例では上面）にメッキ層２０を設けたものを用いる。例えば、接続板部６が銅または銅合金で形成されている場合は、メッキ層２０は銅または銅合金より軟質の錫メッキ層とする。
【００４１】
例えば、図９に示すようなフラットケーブル３のフラット導体１の箇所で、その下面にフラットケーブル接続金具４の該接続板部６を重ねて重ね合わせ部７を形成する。
【００４２】
かかる状態で、図１０に示すフラットケーブル接続装置８の凸型刃部１０と凹型刃部１２とで上下から重ね合せ部７を噛み合わせて、図１及び図２に示すように、凸型刃部１０の切込みにより平行に２本の切れ目１４を入れて突き抜けさせ、これに伴って凸型刃部１０の突き出しにより２本の切れ目１４の間の部分１５を、相対的にその幅方向の両側の部分１６に対して重ね合せ部７の積層方向に段違いにして、切れ目１４の長手方向の端部に図２に示すように接続板部６とフラット導体１とが相互に接触した接触部１７を形成する。この際に、重ね合わせ部７に切れ目１４を入れた際に形成される、メッキ層２０の剪断によるメッキ層延伸部２０ａを、図２に示すようにフラット導体１と接続板部６との接続面間に巻込み介在させて接触部１７を構成する。
【００４３】
本例のフラットケーブルとフラットケーブル接続金具の接続部は、フラットケーブル接続金具４の接続板部６の少なくともフラットケーブル３に接触する面に前述したメッキ層２０を設けたフラットケーブル接続金具４が用いられ、フラットケーブル３のフラット導体１の箇所で、その表面に接続板部６が重ねられて重ね合わせ部７が形成され、この重ね合わせ部７に入れられた２本の切れ目１４の間の部分１５が相対的にその幅方向の両側の部分１６に対して重ね合せ部７の積層方向に段違いにされ、切れ目１４の長手方向の端部に図２に示すように接続板部６とフラット導体１とが相互に接触した接触部１７が形成され、且つ切れ目１４を入れた際に形成されたメッキ層２０の剪断によるメッキ層延伸部２０ａがフラット導体１と接続板部６との接続面間に巻込み介在されて接触部１７が構成されている。
【００４４】
図１にクロスハッチングを入れて表示した接触部１７には、その上下の各部分にメッキ層延伸部２０ａが巻込まれて介在されている。上側のメッキ層延伸部２０ａは、２本の切れ目１４の間の部分１５が段違いに押し出されるときに下向きに形成されたものである。下側のメッキ層延伸部２０ａは、２本の切れ目１４の間の部分１５が段違いに押し出されるときに、これら２本の切れ目１４の間の部分１５の幅方向の両側の部分１６のメッキ層２０が剪断される際に上向きに形成されたものである。
【００４５】
図３及び図４は本発明に係るフラットケーブルとフラットケーブル接続金具の接続方法及び接続部の実施の形態の第２例を示したもので、図３は本例のフラットケーブルとフラットケーブル接続金具の接続部での接続箇所の横断面図、図４は本例で用いているメッキ材シートの一例の拡大断面図である。
【００４６】
本例では、図４に示すように、例えば銅箔等の金属シート２１の少なくとも一方の面に、例えば錫メッキ層の如きメッキ層２０を設けたメッキ材シート２２を用いる。
【００４７】
このメッキ材シート２２を、フラットケーブル３と接続板部６との重ね合わせ面間に巻込み介在させて重ね合わせ部７を構成する。
【００４８】
かかる状態で、図１０に示すフラットケーブル接続装置８の凸型刃部１０と凹型刃部１２とで上下から重ね合せ部７を噛み合わせて、凸型刃部１０の切込みにより平行に２本の切れ目１４を入れて突き抜けさせ、これに伴って凸型刃部１０の突き出しにより２本の切れ目１４の間の部分１５を、相対的にその幅方向の両側の部分１６に対して重ね合せ部７の積層方向に段違いにして、切れ目１４の長手方向の端部に図３に示すように接続板部６とフラット導体１とが相互に接触した接触部１７を形成する。この際に、重ね合わせ部７に切れ目１４を入れた際に形成される、メッキ材シート２２の剪断によるメッキ層延伸部２０ａを、図３に示すようにフラット導体１と接続板部６との接続面間に巻込み介在させて接触部１７を構成する。
【００４９】
本例のフラットケーブルとフラットケーブル接続金具の接続部は、フラットケーブル３とフラットケーブル接続金具４の接続板部６との重ね合わせ面間にメッキ材シート２２が介在されて重ね合わせ部７が構成され、この重ね合わせ部７に入れられた２本の切れ目１４の間の部分１５が相対的にその幅方向の両側の部分１６に対して重ね合せ部７の積層方向に段違いにされ、切れ目１４の長手方向の端部に図３に示すように接続板部６とフラット導体１とが相互に接触した接触部１７が形成され、且つ切れ目１４を入れた際に形成されたメッキ層２０の剪断によるメッキ層延伸部２０ａがフラット導体１と接続板部６との接続面間に巻込み介在されて接触部１７が構成されている。
【００５０】
ところで、一般に金属接触面モデルでは、金属同士を接触させた場合、図１６に示すように、その接触部１７の界面１７ａは無数の接触点１８の集合体であって、この時の電気抵抗Ｒｃは、ホルンの式として知られている下式のように接触点１８の半径ａに反比例するので、即ち接触点１８の半径ａが大きい程接触抵抗が小さくなるので、なるべく接触点１８が図１７に示すように接合面１９の状態になって多い方が望ましいことになる。
【００５１】
Ｒｃ＝ρ／４ａ …（１）
ここで、ρ：電気比抵抗
さらに、この式（１）は、金属間の接触力及び金属の硬さの関係において下式のように展開される。
【００５２】
【数１】

ここで、Ｆ：金属間の接触力、ｆ：弾性限界、Ｈｖ：ビッカース硬さ
式（２）において、金属間の接触力Ｆが一定のとき、接触抵抗はそれぞれの金属の硬さが柔らかいほど低くなり、前述のような接合面１９が多くなっていることが判る。
【００５３】
従って、本発明によるメッキ層２０付きの接続板部６やメッキ材シート２２の使用によって、接続金属であるフラット導体１や接続板部６より柔らかい金属であるメッキ層延伸部２０ａが介在するので、その部分でのガスタイト状の接合面１９が多くなり、接触抵抗をより小さくすることができる。
【００５４】
図５及び図６は上述した作用をモデル的に示したものである。
【００５５】
図５は従来の図１１におけるフラット導体１と接続板部６との接触部１７の界面１７ａを示したものであって、この接触部１７の界面１７ａでは無数の接触点１８によって、図１６に示すようにフラット導体１と接続板部６とがその接触部１７の界面１７ａで点接触している。
【００５６】
一方、本発明によってメッキ層２０のメッキ層延伸部２０ａが、フラット導体１と接続板部６と接触部１７の界面１７ａに巻込み介在された状態をモデル的に示したものが図６であって、接触部１７の界面１７ａに全体的にメッキ層延伸部２０ａが巻込み介在されていないが、界面１７ａの上下の各部分にメッキ層延伸部２０ａが巻込まれて介在されている。即ち、上側のメッキ層延伸部２０ａは、２本の切れ目１４の間の部分１５が段違いに押し出されるときに下向きに形成されたものである。下側のメッキ層延伸部２０ａは、２本の切れ目１４の間の部分１５が段違いに押し出されるときに、これら２本の切れ目１４の間の部分１５の幅方向の両側の部分１６のメッキ層２０が剪断される際に上向きに形成されたものである。このため、図１７のように、フラット導体１と接続板部６と接触部１７の界面１７ａでは接合面１９が多くなり、電気的に接触抵抗の低い安定した接続が得られる。
【００５７】
以上のように本発明によれば、重ね合わせ部７に各切れ目１４を入れた際に形成されたメッキ層２０の剪断によるメッキ層延伸部２０ａがフラット導体１と接続板部６との接続面間に巻込み介在されて接触部１７が構成されるので、軟質金属のメッキ層延伸部２０ａを間にしてフラット導体１と接続板部６とが接触されることになり、電気的接触度が高く、信頼性の高い接続状態となる。
【００５８】
本発明に係るフラットケーブルとフラットケーブル接続金具の接続方法及び接続部でのフラット導体１と接続板部６との重ね方は、図９に示す重ね方だけでなく、図７に示す実施の形態の第３例のように接続板部６を、フラット導体１に対応させてフラットケーブル３の上に重ねて重ね合わせ部７を形成してもよい。この場合には、接続板部６のメッキ層２０は該接続板部６の下面に設ける。
【００５９】
或いは、図１４に示すようにフラットケーブル３Ａ，３Ｂの端部でフラット導体１ａ，１ｂをフラットケーブル接続金具４の接続板部６で接続する接続部にも同様に適用することができる。この場合も、フラットケーブル３Ａ，３Ｂに接する接続板部６の面にメッキ層２０を設けるか、メッキ材シート２２を介在させて前述したと同様の接続を行えばよい。
【００６０】
なお、本発明者は、メッキ材として汎用的な錫を用いたものでその効果を確認しているが、接続する金属よりも柔らかい他のメッキ材であれば、接触抵抗の低減効果を得ることができる。
【００６１】
なお、メッキ材シート２２はメッキ層２０そのもののみからなるシートであってもよい。このメッキ層２０そのもののみからなるシートは、プラスチック等の支持体にメッキ層２０を形成してから、その支持体を溶かす等して除去してメッキ層２０のみを残して形成することができる。
【００６２】
次に、前述した例よりも接触部１７の接続面を多くし、接触抵抗を引き下げる発明について説明する。
【００６３】
図８は、前述の発明によって接続されたフラット導体１と接続板部６との間に通電する本発明に係る第４例の通電回路図であって、直流電源２３から指定電圧を調整するための可変抵抗２４を介して通電接続部２５のフラット導体１と接続板部６との間に通電する。このようにフラット導体１と接続板部６との接触部１７に通電加熱することで、相互の図１６や図１７で説明した接触点１８や接合面１９でのジュール熱の発生による接触点１８や接合面１９の軟化若しくは微細溶融によって、完全な接合面、所謂ガスタイト状の面積が拡大し、初期接触抵抗の低い、接触抵抗のばらつきの少ない接続部９を得ることができる。なお、図８において、２６は通電する回路に接続した電流計、２７は通電する箇所の電圧を測定する電圧計である。
【００６４】
この方法も、図９、図７、図１４に示す接続部９に同様に適用することができる。
【００６５】
また、この方法は、メッキ材を使用しない圧抜き型の接続部にも適用することができる。
【００６６】
また、本発明における通電のタイミングは、接続部を設けると同時に通電してもよい。
【００６７】
このような加熱による接触部１７のガスタイト面積の増加方法は、前述した空気中で接触部１７に通電加熱する以外に、不活性ガス中で接触部１７を外部から加熱し、接触点母材の軟化若しくは微細溶融によって、完全な接合面、所謂ガスタイト状の面積を拡大したものでもよい。
【００６８】
上記例では、重ね合わせ部７に２本の切れ目１４を入れた例について説明したが、本発明はこれに限定されるものではなく、重ね合わせ部に１本の切れ目を入れて、この切れ目に直交する両側の部分を段違いにしてもよい。この例の接続部９は、例えば図２において、右側に切れ目１４が入れられて、この切れ目１４に直交する両側の部分が段違いなり、左側は切れ目１４を入れないで連続した構造になる。このような構造の接続部９でも、前述した例と同様の効果を得ることができる。
【００６９】
【発明の効果】
本発明に係るフラットケーブルとフラットケーブル接続金具の接続方法及び接続部では、フラット導体と接続板部との間に、接続板部の表面に設けたメッキ層を介在させるか、メッキ材シートを介在させて重ね合わせ部を形成し、この重ね合わせ部に各切れ目を入れた際に形成されたメッキ層の剪断によるメッキ層延伸部がフラット導体と接続板部との接続面間に介在されて接触部が構成されるか、または重ね合わせ部に切れ目を入れた際に形成されたメッキ材シートの剪断によるメッキ層延伸部がフラット導体と接続板部との接続面間に介在されて接触部が構成されるので、軟質金属のメッキ層延伸部を間にしてフラット導体と接続板部とが接触されることになり、このため電気的接触度が高く、信頼性の高い接続状態を得ることができる。
【００７０】
また、本発明で前述した構造の接触部に空気中で通電加熱処理を施すか、または該接触部に不活性ガス中で加熱処理を施すと、加熱による導体の軟化若しくは微細溶融によって完全な接合面、即ちガスタイト状面積が拡大し、より電気的に安定した電気的接続性能の高い接続部を得ることができる。特に、接触部に不活性ガス中で加熱処理を施すと、酸化を防止しつつより安定した電気的接続性能の高い接続部を得ることができる。
【図面の簡単な説明】
【図１】本発明に係るフラットケーブルとフラットケーブル接続金具の接続方法で接続された実施の形態１のフラットケーブルとフラットケーブル接続金具の接続部の縦断面図である。
【図２】本例のフラットケーブルとフラットケーブル接続金具の接続部の横断面図である。
【図３】本発明に係るフラットケーブルとフラットケーブル接続金具の接続方法で接続された実施の形態２のフラットケーブルとフラットケーブル接続金具の接続部の縦断面図である。
【図４】第２例で用いているメッキ材シートの断面図である。
【図５】従来のフラット導体と接続板部との接触部の界面をモデル的に示した縦断面図である。
【図６】本発明のフラット導体と接続板部との接触部の界面をモデル的に示した縦断面図である。
【図７】本発明に係るフラットケーブルとフラットケーブル接続金具の接続方法で接続された実施の形態３のフラットケーブルとフラットケーブル接続金具の接続部の縦断面図である。
【図８】本発明によって接続されたフラット導体と接続板部との間に通電する本発明に係る第４例の通電回路図である。
【図９】従来のフラットケーブルとフラットケーブル接続金具の接続部の一例の斜視図である。
【図１０】図９に示す接続を行うフラットケーブル接続装置の斜視図である。
【図１１】図９のＡ−Ａ線断面図である。
【図１２】図９のＢ−Ｂ線断面図である。
【図１３】図９のＣ−Ｃ線断面図である。
【図１４】従来のフラットケーブルとフラットケーブル接続金具の接続部の一例の斜視図である。
【図１５】図１４のＤ−Ｄ線断面図である。
【図１６】従来のフラットケーブルとフラットケーブル接続金具の接触部の拡大断面図である。
【図１７】好ましいフラットケーブルとフラットケーブル接続金具の接触部の拡大断面図である。
【符号の説明】
１，１ａ，１ｂフラット導体
２フラット絶縁被覆
３，３Ａ，３Ｂフラットケーブル
４フラットケーブル接続金具
５嵌め合わせ接続体
６接続板部
７重ね合わせ部
８フラットケーブル接続装置
９接続部
１０凸型刃部
１１凸刃型
１２凹型刃部
１３凹刃型
１４切れ目
１５２本の切れ目の間の部分
１６幅方向の両側の部分
１７接触部
１８接触点
１９接合面
２０メッキ層
２０ａメッキ層延伸部
２１金属シート
２２メッキ材シート
２３直流電源
２４可変抵抗
２５通電接続部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connecting method and a connecting portion of a flat cable and a flat cable connecting bracket used for electric wiring of an electric device or an automobile.
[0002]
[Prior art]
As shown in FIG. 9, a flat cable 3 in which a flat conductor 1 is covered with a flat insulating coating 2 has been used for electric wiring of electric devices and automobiles. As the flat conductor 1 of the flat cable 3, for example, a strip-shaped conductor made of, for example, copper, aluminum or the like with a thickness of 0.15 mm to 0.2 mm and a width of 1.5 mm to 3.0 mm is used. The flat insulating coating 2 is made of a plastic such as polyethylene terephthalate.
[0003]
As a method for connecting the flat cable connecting bracket 4 to the flat cable 3 as described above, a pressure relief type connecting method as shown in FIG. 9 has been proposed.
[0004]
The flat cable connecting bracket 4 has a structure in which, for example, a metal female fitting connector 5 is connected to the same metal connecting plate 6 at one end edge.
[0005]
In the pressure-release type connection method, the flat cable connection fitting 4 forms the overlapping portion 7 by overlapping the connection plate portion 6 on the lower surface corresponding to the flat conductor 1 at the end of the flat cable 3 to be connected.
[0006]
The overlapping portion 7 is subjected to pressure relief processing by the flat cable connecting device 8 shown in FIG.
[0007]
The flat cable connecting device 8 includes a convex blade mold 11 having an arcuate convex blade portion 10 at the tip, and a concave blade die 13 having a concave blade portion 12 into which the convex blade portion 10 is fitted at the tip. It consists of
[0008]
In this flat cable connecting device 8, the convex blade portion 10 and the concave blade portion 12 are engaged from above and below, and parallel to the overlapping portion 7 by cutting the convex blade portion 10 as shown in FIGS. The two cuts 14 are inserted into and penetrated, and along with this, the protruding blade 10 protrudes so that the portion 15 between the two cuts 14 is relatively positioned relative to the portions 16 on both sides in the width direction. The stacking unit 7 is stepped in the stacking direction.
[0009]
Thus, as shown in FIG. 13, a contact portion 17 where the connecting plate portion 6 and the flat conductor 1 are in contact with each other is formed at the longitudinal end portion of the cut line 14, and the flat cable connecting metal 4 is electrically connected to the flat conductor 1. , A mechanically connected connection 9 is obtained. In this case, a cross-sectional view of the vicinity of the top in the protruding direction of the portion 15 between the two cuts 14 is as shown in FIG. 12, and the connecting plate portion 6 and the flat conductor 1 are not in contact with each other.
[0010]
According to such a pressure release type connecting method, the connecting portion 9 can be easily formed using the flat cable connecting device 8 having a simple structure as shown in FIG. Moreover, according to this connection method, even if the width | variety of the flat conductor 1 becomes narrow, it can implement easily.
[0011]
Further, as another example of the pressure release type connection method, as shown in FIG. 14, in parallel with a flat cable 3A in which a plurality of flat conductors 1a arranged in parallel are covered with a flat insulating coating 2a in a lump. There is a method in which a plurality of flat conductors 1b arranged in parallel are connected to a flat cable 3B in which a flat insulating coating 2b is collectively covered.
[0012]
In this pressure release type connection method, flat cables 3A and 3B are connected to each other. each The ends are arranged facing each other as shown. In such a state, the connection plate portion 6 of the flat cable connection metal fitting 4 mainly composed of the connection plate portion 6 is straddled across the upper surfaces of the two flat cables 3A and 3B at positions corresponding to the mutual flat conductors 1a and 1b. The overlapping portion 7 is formed by overlapping.
[0013]
At the position of the overlapping portion 7 on the side of each flat cable 3A, 3B, using the above-described flat cable connecting device 8 shown in FIG. Along with this, the portion 15 between the two cuts 14 is made relatively uneven in the stacking direction of the overlapping portion 7 with respect to the portions 16 on both sides in the width direction by the protrusion of the convex blade portion 10. As shown in FIG. 15, the connecting plate portion 6 and the flat conductor 1 are in contact with each other as shown in FIG. 15, and the flat conductors 1a and 1b of the flat cables 3A and 3B are connected to each other. A connection part 9 electrically and mechanically connected to each other is obtained.
[0014]
[Problems to be solved by the invention]
However, in such a pressure relief type connection method, the sheared new surfaces of the flat conductor 1 and the connection plate portion 6 contact each other. When the contact surface is enlarged, for example, as shown in FIG. Further, the contact surface between the flat conductor 1 and the connecting plate portion 6 is formed as a collection of innumerable contact points 18 and is formed as a gastight-like continuous joint surface 19 as shown in FIG. It has not been. Therefore, in the normal connection position, there is no problem even if the connection by the conventional method is used, but the electrical contact degree is further increased in the connection in a circuit that requires more safety or a circuit that receives rough handling in wiring work. High and reliable connections are required.
[0015]
An object of the present invention is to provide a connecting method and a connecting portion of a flat cable and a flat cable connecting metal fitting that have a high electrical contact degree and a highly reliable connection state.
[0016]
[Means for Solving the Problems]
Each means of the present invention that achieves the above object is as follows.
[0017]
The present invention is a flat conductor portion of a flat cable in which the flat conductor is covered with a flat insulating coating. To the flat cable Overlap the connecting plate part of the flat cable connection bracket to form an overlapped part After , Make at least one cut in the overlap And Make the parts on both sides perpendicular to the cut line uneven. The The present invention is directed to a method of connecting a flat cable and a flat cable connecting metal fitting in which a contact portion where the flat conductor and the connecting plate portion are in contact with each other is provided at an end portion along the longitudinal direction of the cut.
[0018]
In the connection method of the flat cable and the flat cable connecting metal fitting according to the present invention, a plating layer formed by shearing the plating layer is formed when a cut is made in the overlapping portion using a connection plate portion provided with a plating layer on the surface. The extending portion is interposed between the connecting surfaces of the flat conductor and the connecting plate portion to form the contact portion.
[0019]
Further, the present invention is a flat conductor portion of a flat cable in which the flat conductor is covered with a flat insulation coating. Flat cable The connecting plate portions of the cable connection fitting are overlapped to form an overlapping portion, and at least one cut is made in the overlapping portion. As The parts on both sides perpendicular to the cut are made uneven. The The connection portion of the flat cable and the flat cable connecting metal fitting is provided in which a contact portion where the flat conductor and the connection plate portion are in contact with each other is provided at an end portion along the longitudinal direction of the cut.
[0020]
In the connecting portion between the flat cable and the flat cable connecting bracket according to the present invention, a connecting plate portion provided with a plating layer on the surface is used, and the plating layer formed by shearing the plating layer formed when a cut is made in the overlapping portion The extending portion is interposed between the connecting surfaces of the flat conductor and the connecting plate portion to form a contact portion.
[0021]
Further, the present invention is a flat conductor portion of a flat cable in which the flat conductor is covered with a flat insulation coating. Flat cable Overlap the connecting plate part of the flat cable connection bracket to form an overlapped part After , At least one cut in the overlapping portion As you put , Make the parts on both sides perpendicular to the cut The The present invention is directed to a method of connecting a flat cable and a flat cable connecting metal fitting in which a contact portion where the flat conductor and the connecting plate portion are in contact with each other is provided at an end portion along the longitudinal direction of the cut.
[0022]
In the method for connecting the flat cable and the flat cable connecting metal fitting according to the present invention, the overlapping portion is configured by interposing the plating material sheet between the overlapping surfaces of the flat cable and the connecting plate portion, and a cut is formed in the overlapping portion. A contact portion is formed by interposing a plating layer extending portion formed by shearing of a plating material sheet formed when inserted between the connection surfaces of the flat conductor and the connection plate portion.
[0023]
Further, the present invention is a flat conductor portion of a flat cable in which the flat conductor is covered with a flat insulation coating. Flat cable Flat cable connection bracket connection plate Are superimposed An overlapping portion is formed, and at least one break is formed in the overlapping portion. With being put in The parts on both sides perpendicular to the cut are made uneven. The The connection portion of the flat cable and the flat cable connecting metal fitting is provided in which a contact portion where the flat conductor and the connection plate portion are in contact with each other is provided at an end portion along the longitudinal direction of the cut.
[0024]
In the connecting portion between the flat cable and the flat cable connecting metal fitting according to the present invention, a plating material sheet is interposed between the overlapping surfaces of the flat cable and the connecting plate portion to form an overlapping portion, and a cut is formed in the overlapping portion. A plating layer extending portion by shearing of the plating material sheet formed at the time of insertion is interposed between the connection surfaces of the flat conductor and the connection plate portion to form a contact portion.
[0025]
The present invention also provides a plurality of flat cables in which a flat conductor is covered with a flat insulating coating. each edge The Placed face-to-face with the ends facing each other plural flat Each of the cables Flat conductor Across the multiple flat cables at a position corresponding to Overlap the connecting plate part of the flat cable connection bracket to form the overlapping part, At least one cut is made in the overlapping portion at the location of the flat conductor of each flat cable, Make the sections on both sides perpendicular to each cut different from each other. The A method of connecting a flat cable and a flat cable connecting metal fitting, each of which has a contact portion where the flat conductor and the connecting plate portion are in contact with each other at an end portion along the longitudinal direction of each cut, is intended.
[0026]
In the connecting method of the flat cable and the flat cable connecting metal fitting according to the present invention, the plating layer is formed by shearing the plating layer formed by using the connection plate portion provided with the plating layer on the surface and making each cut in the overlapping portion. The extending portion is interposed between the connecting surfaces of the flat conductor and the connecting plate portion to constitute the contact portion.
[0027]
The present invention also provides a plurality of flat cables in which a flat conductor is covered with a flat insulation coating. each edge The Placed face-to-face with ends facing each other plural Flat cable Cross over the flat cables at the position corresponding to each flat conductor The connecting plate part of the flat cable connecting bracket is overlapped to form an overlapping part, There is at least one cut in the overlapping portion at a location corresponding to the flat conductor of each flat cable. Put in As The parts on both sides perpendicular to each cut are made different Each The flat conductor and the connecting plate part contact each other at the end along the longitudinal direction of the cut. Contact part provided The connection part of the flat cable and the flat cable connecting bracket is used.
[0028]
In the connecting portion between the flat cable and the flat cable connecting bracket according to the present invention, a connecting plate portion provided with a plating layer on the surface is used, and plating by shearing of the plating layer formed when each cut is made in the overlapping portion The layer extending portion is interposed between the connecting surfaces of the flat conductor and the connecting plate portion to form a contact portion.
[0029]
The present invention also provides a plurality of flat cables in which a flat conductor is covered with a flat insulation coating. Face each end Placed and end facing each other plural Flat cable Across the multiple flat cables at a position corresponding to each flat conductor Overlap the connecting plate part of the flat cable connection bracket to form the overlapping part, At least one cut is made in the overlap portion at a position corresponding to the flat conductor of each flat cable. Make the sections on both sides perpendicular to each cut different from each other. And A method for connecting a flat cable and a flat cable connecting metal fitting, in which a contact portion where the flat conductor and the connection plate portion are in contact with each other, is provided at an end portion along the longitudinal direction of each cut.
[0030]
In the method for connecting the flat cable and the flat cable connecting metal fitting according to the present invention, the overlapping portion is configured by interposing the plating material sheet between the overlapping surfaces of the flat cable and the connecting plate portion, and a cut is formed in the overlapping portion. A contact portion is formed by interposing a plating layer extending portion formed by shearing of a plating material sheet formed when inserted between the connection surfaces of the flat conductor and the connection plate portion.
[0031]
The present invention also provides a plurality of flat cables in which a flat conductor is covered with a flat insulation coating. each edge The Placed face-to-face with ends facing each other plural Flat cable Each Flat conductor To the flat cables at a position corresponding to The connecting part of the flat cable connection metal fitting is overlapped to form an overlapping part, At least one cut is made in the overlapping portion at a position corresponding to the flat conductor of each flat cable, and each The parts on both sides perpendicular to the cut are not The In addition, the present invention is directed to a connection portion of a flat cable and a flat cable connecting metal fitting in which contact portions where the flat conductor and the connection plate portion are in contact with each other are provided at end portions along the longitudinal direction of the cut lines.
[0032]
In the connecting portion of the flat cable and the flat cable connecting metal fitting according to the present invention, a plating material sheet is interposed between the overlapping surfaces of the flat cable and the connecting plate portion to form an overlapping portion, and the overlapping portion is cut. A contact portion is formed by interposing a plating layer extending portion by shearing of a plating material sheet formed at the time of insertion between the connection surfaces of the flat conductor and the connection plate portion.
[0033]
In each of the above-described inventions, the plating layer provided on the surface of the connection plate portion needs to be a plating layer that is softer than the hardness of the connection plate portion.
[0034]
In this way, whether the contact portion is formed by interposing the plating layer extending portion by shearing of the plating layer formed when each cut is made in the overlapping portion between the connection surfaces of the flat conductor and the connecting plate portion. If the contact portion is configured by interposing the extended portion of the plating layer by shearing of the plating material sheet formed when the cut is made in the overlapped portion between the connecting surfaces of the flat conductor and the connecting plate portion, Since the flat conductor and the connecting plate are brought into contact with each other with the metal plating layer extending part in between, the connection method and connection between the flat cable and the flat cable connecting metal fitting with high electrical contact and high reliability Part can be obtained.
[0035]
Moreover, in the connection method of the flat cable and flat cable connecting metal fitting of this invention, it is preferable to apply an electrical heating process to the contact part of the structure mentioned above, or to heat-process this contact part in inert gas.
[0036]
When such a heat treatment is performed, a perfect joint surface, that is, a gas tight area is expanded by softening or fine melting of the conductor by heating, and a more electrically stable connection portion with high electrical connection performance can be obtained. it can.
[0037]
In the present invention, the plating layer extending portion refers to a portion that extends and extends until the plating layer is sheared when the plating layer is sheared.
[0038]
In the present invention, the plating material sheet may be a sheet of a plating layer itself, or may be a metal sheet whose surface is coated with a plating layer.
[0039]
DETAILED DESCRIPTION OF THE INVENTION
1 and 2 show a first example of an embodiment of a method for connecting a flat cable and a flat cable connecting fitting and a connecting portion according to the present invention, and FIG. 1 shows the flat cable and the flat cable connecting fitting of this example. 9 is a vertical cross-sectional view corresponding to the cross-sectional view taken along the line AA of FIG. 9, and FIG. 2 corresponds to the cross-sectional view taken along the line CC of FIG. It is a cross-sectional view.
[0040]
In this example, the flat cable connection metal 4 having at least one surface (in this example, the upper surface) of the connection plate portion 6 provided with the plating layer 20 is used. For example, when the connection plate 6 is made of copper or a copper alloy, the plating layer 20 is a tin plating layer that is softer than copper or a copper alloy.
[0041]
For example, at the location of the flat conductor 1 of the flat cable 3 as shown in FIG. 9, the overlapping plate 7 is formed by overlapping the connecting plate portion 6 of the flat cable connecting bracket 4 on the lower surface thereof.
[0042]
In such a state, the overlapping blade 7 is engaged from above and below by the protruding blade portion 10 and the recessed blade portion 12 of the flat cable connecting device 8 shown in FIG. 10, and as shown in FIGS. The two cuts 14 are inserted in parallel by the cut of the portion 10, and the portions 15 between the two cuts 14 are relatively protruded by the protrusion of the convex blade portion 10. As shown in FIG. 2, the contact portion 17 where the connecting plate portion 6 and the flat conductor 1 are in contact with each other as shown in FIG. Form. At this time, the plated layer extending portion 20a formed by shearing the plated layer 20 formed when the cut 14 is made in the overlapping portion 7 is connected to the flat conductor 1 and the connecting plate portion 6 as shown in FIG. The contact portion 17 is configured by being interposed between the surfaces.
[0043]
The flat cable connecting bracket 4 in which the plating layer 20 described above is provided on at least the surface of the connecting plate portion 6 of the flat cable connecting bracket 4 that contacts the flat cable 3 is used as the connecting portion between the flat cable and the flat cable connecting bracket in this example. In the portion of the flat conductor 1 of the flat cable 3, the connecting plate portion 6 is overlapped on the surface to form the overlapping portion 7, and the portion between the two cuts 14 put in the overlapping portion 7 15 is relatively stepped in the laminating direction of the overlapping portion 7 with respect to the portions 16 on both sides in the width direction, and the connecting plate portion 6 and the flat conductor as shown in FIG. The contact portion 17 in contact with each other 1 is formed, and the plated layer extending portion 20a by shearing of the plated layer 20 formed when the cut 14 is made is formed by the flat conductor 1 and the connection plate Contact portion 17 is caught interposed between the connection surfaces of the 6 is formed.
[0044]
In the contact portion 17 displayed with cross-hatching in FIG. 1, a plating layer extending portion 20 a is wound around and interposed between the upper and lower portions. The upper plating layer extending portion 20a is formed downward when the portion 15 between the two cuts 14 is extruded in a stepwise manner. When the portion 15 between the two cuts 14 is extruded in a stepwise manner, the lower plating layer extending portion 20a has a plating layer on the portions 16 on both sides in the width direction of the portion 15 between the two cuts 14. When 20 is sheared, it is formed upward.
[0045]
3 and 4 show a second example of the embodiment of the connecting method and connecting portion of the flat cable and the flat cable connecting metal fitting according to the present invention, and FIG. 3 shows the flat cable and the flat cable connecting metal fitting of this example. FIG. 4 is an enlarged cross-sectional view of an example of a plating material sheet used in this example.
[0046]
In this example, as shown in FIG. 4, a plating material sheet 22 in which a plating layer 20 such as a tin plating layer is provided on at least one surface of a metal sheet 21 such as a copper foil is used.
[0047]
This plating material sheet 22 is wound and interposed between the overlapping surfaces of the flat cable 3 and the connecting plate portion 6 to constitute the overlapping portion 7.
[0048]
In this state, the overlapping blade portion 7 is engaged with the convex blade portion 10 and the concave blade portion 12 of the flat cable connecting device 8 shown in FIG. A portion 14 between the two cuts 14 is relatively formed with respect to the portions 16 on both sides in the width direction due to the protrusion of the convex blade portion 10 and the cut portion 14 is penetrated. As shown in FIG. 3, a contact portion 17 in which the connecting plate portion 6 and the flat conductor 1 are in contact with each other is formed at the end portion in the longitudinal direction of the cut 14. At this time, the plating layer extending portion 20a formed by shearing the plating material sheet 22 formed when the cut 14 is made in the overlapping portion 7 is formed between the flat conductor 1 and the connecting plate portion 6 as shown in FIG. The contact portion 17 is configured by being interposed between the connection surfaces.
[0049]
In the connecting portion of the flat cable and the flat cable connecting bracket of this example, the overlapping portion 7 is configured by interposing the plating material sheet 22 between the overlapping surfaces of the flat cable 3 and the connecting plate portion 6 of the flat cable connecting bracket 4. Then, the portion 15 between the two cuts 14 placed in the overlapping portion 7 is made to be relatively stepped in the stacking direction of the overlapping portion 7 with respect to the portions 16 on both sides in the width direction. As shown in FIG. 3, a contact portion 17 where the connecting plate portion 6 and the flat conductor 1 are in contact with each other is formed at the longitudinal end portion of the plate, and the plating layer 20 formed when the cut 14 is made is sheared. The contact portion 17 is configured by winding the plated layer extending portion 20a between the flat conductor 1 and the connecting plate portion 6 between the connecting surfaces.
[0050]
By the way, in general, in the metal contact surface model, when metals are brought into contact with each other, as shown in FIG. 16, the interface 17a of the contact portion 17 is an aggregate of innumerable contact points 18, and the electric resistance Rc at this time Is inversely proportional to the radius a of the contact point 18 as shown in the following equation known as the Horn equation, that is, the larger the radius a of the contact point 18, the smaller the contact resistance. As shown in the figure, it is desirable that the joining surface 19 is in a large state.
[0051]
Rc = ρ / 4a (1)
Where ρ: electrical resistivity
Further, the formula (1) is developed as the following formula in relation to the contact force between metals and the hardness of the metal.
[0052]
[Expression 1]

Where F: contact force between metals, f: elastic limit, Hv: Vickers hardness
In the formula (2), when the contact force F between the metals is constant, it can be seen that the contact resistance becomes lower as the hardness of each metal becomes softer, and the above-described joining surface 19 increases.
[0053]
Therefore, by using the connecting plate part 6 with the plating layer 20 and the plating material sheet 22 according to the present invention, the flat conductor 1 as the connecting metal and the plating layer extending part 20a as the metal softer than the connecting plate part 6 are interposed. The gas tight joint surface 19 increases at that portion, and the contact resistance can be further reduced.
[0054]
5 and 6 show the above-described action in a model manner.
[0055]
FIG. 5 shows an interface 17a of the contact portion 17 between the flat conductor 1 and the connecting plate portion 6 in FIG. 11 of the prior art. The interface 17a of the contact portion 17 has an infinite number of contact points 18 in FIG. As shown, the flat conductor 1 and the connecting plate portion 6 are in point contact at the interface 17 a of the contact portion 17.
[0056]
On the other hand, FIG. 6 schematically shows a state in which the plated layer extending portion 20a of the plated layer 20 is wound around the interface 17a of the flat conductor 1, the connecting plate portion 6, and the contact portion 17 according to the present invention. Thus, although the plating layer extending portion 20a is not entirely wound around the interface 17a of the contact portion 17, the plating layer extending portion 20a is wound and interposed in the upper and lower portions of the interface 17a. In other words, the upper plated layer extending portion 20a is formed downward when the portion 15 between the two cuts 14 is extruded in a stepwise manner. When the portion 15 between the two cuts 14 is extruded in a stepwise manner, the lower plating layer extending portion 20a has a plating layer on the portions 16 on both sides in the width direction of the portion 15 between the two cuts 14. When 20 is sheared, it is formed upward. For this reason, as shown in FIG. 17, the joint surface 19 increases at the interface 17a of the flat conductor 1, the connecting plate portion 6, and the contact portion 17, and a stable connection with low electrical contact resistance is obtained.
[0057]
As described above, according to the present invention, the plating layer extending portion 20 a due to the shearing of the plating layer 20 formed when each cut 14 is made in the overlapping portion 7 is the connection surface between the flat conductor 1 and the connection plate portion 6. Since the contact portion 17 is formed by being interposed therebetween, the flat conductor 1 and the connecting plate portion 6 are brought into contact with each other with the soft metal plating layer extending portion 20a interposed therebetween, and the electrical contact degree is increased. The connection state is high and reliable.
[0058]
The method of connecting the flat cable and the flat cable connecting metal fitting according to the present invention and the method of overlapping the flat conductor 1 and the connecting plate 6 at the connecting portion are not limited to the method shown in FIG. 9, but the embodiment shown in FIG. As in the third example, the overlapping portion 7 may be formed by overlapping the connecting plate portion 6 on the flat cable 3 so as to correspond to the flat conductor 1. In this case, the plating layer 20 of the connection plate 6 is provided on the lower surface of the connection plate 6.
[0059]
Alternatively, as shown in FIG. 14, the present invention can be similarly applied to a connection portion in which the flat conductors 1 a and 1 b are connected by the connection plate portion 6 of the flat cable connection fitting 4 at the ends of the flat cables 3 </ b> A and 3 </ b> B. Also in this case, the plating layer 20 may be provided on the surface of the connection plate portion 6 in contact with the flat cables 3A and 3B, or the same connection as described above may be performed with the plating material sheet 22 interposed.
[0060]
In addition, although this inventor has confirmed the effect in what used general-purpose tin as a plating material, if it is other plating materials softer than the metal to connect, it will acquire the reduction effect of contact resistance. Can do.
[0061]
Note that the plating material sheet 22 may be a sheet made only of the plating layer 20 itself. The sheet made of only the plating layer 20 itself can be formed by forming the plating layer 20 on a support such as plastic and then removing the support by melting or the like, leaving only the plating layer 20.
[0062]
Next, an invention for reducing the contact resistance by increasing the connection surface of the contact portion 17 as compared with the above-described example will be described.
[0063]
FIG. 8 is an energization circuit diagram of a fourth example according to the present invention that energizes between the flat conductor 1 and the connecting plate portion 6 connected according to the above-described invention, in order to adjust the specified voltage from the DC power source 23. The variable resistor 24 is used to energize between the flat conductor 1 of the energization connection portion 25 and the connection plate portion 6. In this way, the contact portion 17 between the flat conductor 1 and the connecting plate portion 6 is energized and heated, whereby the contact point 18 described with reference to FIGS. 16 and 17 and the contact point 18 due to the generation of Joule heat at the joint surface 19. As a result of the softening or fine melting of the joint surface 19, the perfect joint surface, the so-called gas tight area, is expanded, and the connection portion 9 having a low initial contact resistance and a small contact resistance variation can be obtained. In FIG. 8, 26 is an ammeter connected to a circuit to be energized, and 27 is a voltmeter that measures the voltage at a site to be energized.
[0064]
This method can also be similarly applied to the connecting portion 9 shown in FIGS.
[0065]
This method can also be applied to a pressure-release type connecting portion that does not use a plating material.
[0066]
Further, the timing of energization in the present invention may be energized simultaneously with the provision of the connecting portion.
[0067]
The method of increasing the gas tight area of the contact portion 17 by heating as described above is that the contact portion 17 is heated in the inert gas from the outside in addition to the above-described heating of the contact portion 17 in the air. A completely joined surface, that is, a so-called gas tight area may be enlarged by softening or fine melting.
[0068]
In the above example, the example in which the two cuts 14 are made in the overlapping portion 7 has been described. However, the present invention is not limited to this. The portions on both sides orthogonal to each other may be stepped. For example, in FIG. 2, the connection portion 9 of this example has a cut 14 on the right side, steps on both sides orthogonal to the cut 14 are stepped, and the left side has a continuous structure without the cut 14. Even in the connection portion 9 having such a structure, the same effect as the above-described example can be obtained.
[0069]
【The invention's effect】
In the connecting method and connecting portion between the flat cable and the flat cable connecting bracket according to the present invention, a plating layer provided on the surface of the connecting plate portion is interposed between the flat conductor and the connecting plate portion, or a plating material sheet is interposed. The overlapping part is formed, and the plating layer extension part due to the shearing of the plating layer formed when each cut is made in this overlapping part is interposed between the contact surfaces of the flat conductor and the connecting plate part to make contact The plating layer extending portion by shearing of the plating material sheet formed when the cut portion is formed in the overlapped portion is interposed between the connection surfaces of the flat conductor and the connection plate portion, and the contact portion is Since it is configured, the flat conductor and the connecting plate part are brought into contact with each other with the soft metal plating layer extending part therebetween, so that a high electrical contact degree and a reliable connection state can be obtained. it can
[0070]
Further, when the contact portion having the structure described above in the present invention is subjected to heat treatment in air or heat treatment in an inert gas, complete bonding is achieved by softening or fine melting of the conductor due to heating. A surface, that is, a gas tight area is enlarged, and a more electrically stable connection portion with high electrical connection performance can be obtained. In particular, when the contact portion is subjected to heat treatment in an inert gas, it is possible to obtain a connection portion having a more stable electrical connection performance while preventing oxidation.
[Brief description of the drawings]
FIG. 1 is a vertical cross-sectional view of a connecting portion between a flat cable and a flat cable connecting bracket according to Embodiment 1 connected by a connecting method of a flat cable and a flat cable connecting bracket according to the present invention.
FIG. 2 is a cross-sectional view of a connecting portion between a flat cable and a flat cable connecting bracket of the present example.
FIG. 3 is a vertical cross-sectional view of a connecting portion between a flat cable and a flat cable connecting bracket according to a second embodiment connected by the connecting method of the flat cable and the flat cable connecting bracket according to the present invention.
FIG. 4 is a cross-sectional view of a plating material sheet used in the second example.
FIG. 5 is a longitudinal sectional view schematically showing an interface of a contact portion between a conventional flat conductor and a connection plate portion.
FIG. 6 is a longitudinal sectional view schematically showing an interface of a contact portion between a flat conductor and a connecting plate portion of the present invention.
FIG. 7 is a vertical cross-sectional view of a connecting portion between a flat cable and a flat cable connecting metal according to Embodiment 3 connected by a connecting method of the flat cable and the flat cable connecting metal according to the present invention.
FIG. 8 is an energization circuit diagram of a fourth example according to the present invention in which a current is passed between a flat conductor and a connecting plate portion connected according to the present invention.
FIG. 9 is a perspective view of an example of a connecting portion between a conventional flat cable and a flat cable connecting bracket.
10 is a perspective view of a flat cable connecting device that performs the connection shown in FIG. 9; FIG.
11 is a cross-sectional view taken along line AA in FIG.
12 is a sectional view taken along line BB in FIG.
13 is a cross-sectional view taken along the line CC of FIG.
FIG. 14 is a perspective view of an example of a connecting portion between a conventional flat cable and a flat cable connecting bracket.
15 is a cross-sectional view taken along the line DD of FIG.
FIG. 16 is an enlarged cross-sectional view of a contact portion between a conventional flat cable and a flat cable connecting bracket.
FIG. 17 is an enlarged cross-sectional view of a contact portion between a preferred flat cable and a flat cable connecting bracket.
[Explanation of symbols]
1,1a, 1b Flat conductor
2 Flat insulation coating
3, 3A, 3B flat cable
4 Flat cable connection bracket
5 Mating connector
6 Connection plate
7 Overlapping part
8 Flat cable connection device
9 connections
10 Convex blade
11 Convex blade type
12 Concave blade
13 Concave blade type
14 breaks
15 Part between two cuts
16 Parts on both sides in the width direction
17 Contact area
18 Contact points
19 Joint surface
20 plating layer
20a Plating layer extension part
21 Metal sheet
22 Plating material sheet
23 DC power supply
24 Variable resistance
25 Electrical connection

Claims

A flat conductor is covered with a flat insulation coating at a portion of the flat conductor of the flat cable, and a connection portion of the flat cable connecting metal is overlapped on the flat cable to form an overlap portion. in the uneven both sides of the portion perpendicular to Rutotomoni the cut put one cut, provided with a contact portion in which the on the end portion along the longitudinal direction the flat conductor and said connecting plate portion is in contact with each other of the cut In the connection method between the flat cable and the flat cable connector,
The connecting plate portion is provided with a plating layer on the surface, and the overlapping portion is formed by overlapping the connecting plate portion so that the plating layer is in contact with the flat cable, and the cut portion is formed in the overlapping portion. A flat cable formed by inserting a plating layer extending portion by shearing of the plating layer between the connection surfaces of the flat conductor and the connection plate portion, and forming the contact portion; Connection method for flat cable fittings.

At the flat conductor portion of the flat cable in which the flat conductor is covered with a flat insulating coating, a connecting plate portion of the flat cable connecting metal is overlapped on the flat cable to form an overlapping portion, and at least one overlap portion is formed on the overlapping portion. both sides of the part are in staggered perpendicular to Rutotomoni the cut slit is placed in the contact portion in which the on the end portion along the longitudinal direction the flat conductor and said connecting plate portion is in contact with each other of the cuts At the connection part of the flat cable and the flat cable connection bracket provided,
The connection plate portion is provided with a plating layer on the surface, and the connection plate portion is overlapped with the flat cable so that the plating layer is in contact with the flat cable, thereby forming the overlapping portion, The contact portion is configured such that a plating layer extending portion by shearing of the plating layer formed when the cut is made in the mating portion is interposed between connection surfaces of the flat conductor and the connection plate portion. The connection part of the flat cable and the flat cable connection bracket characterized by

After the flat conductor is covered with a flat insulating coating, the flat conductor portion of the flat cable connecting metal plate is overlapped with the flat cable to form an overlap portion. both sides of the portion perpendicular to the cut with nicking of this in the different levels, the flat cable provided with a contact portion in which the on the end portion along the longitudinal direction and the flat conductor and the connecting plate portion in contact with each other of the cut And flat cable connection bracket connection method
The plating material sheet is formed between the overlapping surfaces of the flat cable and the connecting plate portion to constitute the overlapping portion, and the plating material sheet formed when the cut is made in the overlapping portion. A connecting method of a flat cable and a flat cable connecting metal fitting, wherein the contact portion is configured by interposing a plating layer extending portion by shearing between connection surfaces of the flat conductor and the connecting plate portion.

At the flat conductor portion of the flat cable in which the flat conductor is covered with a flat insulating coating, a connection plate portion of the flat cable connection fitting is overlapped on the flat cable to form an overlap portion, and at least one overlap portion is formed on the overlap portion. both sides of the part are in staggered perpendicular to Rutotomoni the cut slit is placed in the contact portion in which the on the end portion along the longitudinal direction the flat conductor and said connecting plate portion is in contact with each other of the cuts At the connection part of the flat cable and the flat cable connection bracket provided,
The plating material sheet is interposed between the overlapping surfaces of the flat cable and the connecting plate portion to form the overlapping portion, and the plating material sheet formed when the cut is made in the overlapping portion. A connecting portion between a flat cable and a flat cable connecting metal fitting, wherein the contact portion is configured by interposing a plating layer extending portion by shearing between connecting surfaces of the flat conductor and the connecting plate portion.

A plurality of flat cables with flat conductors are covered with flat insulating coating disposed facing the respective end portions, said plurality of at a position corresponding to each of the flat conductor of the plurality of flat cables in which the end facing each cut with add at least one slit by straddle the flat cable after the formation of the portion overlapped by overlapping connecting plate portion of the flat cable fitting, in the overlap portion at a position of the flat conductors of the flat cable Connection of flat cable and flat cable connection fittings in which the portions on both sides orthogonal to each other are stepped and a contact portion where the flat conductor and the connection plate portion are in contact with each other is provided at the end along the longitudinal direction of each cut In the method
The connecting plate portion is provided with a plating layer on the surface, and the flat conductor and the connecting plate are formed by extending the plating layer by shearing the plating layer formed when the cuts are made in the overlapping portion. A connecting method for a flat cable and a flat cable connecting metal fitting, characterized in that the contact portion is configured to be interposed between connection surfaces with a portion.

A plurality of flat cables in which a flat conductor is covered with a flat insulation coating are arranged with their ends facing each other, and the flat cables are arranged at positions corresponding to the flat conductors of the plurality of flat cables with the ends facing each other. was reluctant extend over cable superposed are superposed is connecting plate portion of the flat cable connection fitting portion is formed, at least one cut is placed et the overlap portion at a position corresponding to the flat conductor of the flat cable And a flat cable in which the portions on both sides orthogonal to each cut are stepped, and a contact portion where the flat conductor and the connecting plate portion are in contact with each other is provided at an end portion along the longitudinal direction of each cut. And at the connection part of the flat cable connector
The connecting plate portion is provided with a plating layer on the surface, and the plating layer extending portion formed by shearing the plating layer formed when each cut is made in the overlapped portion is the flat conductor and the connecting plate. A connecting portion between a flat cable and a flat cable connecting metal fitting, wherein the contact portion is configured to be interposed between connecting surfaces with the connecting portion.

A plurality of flat cables with flat conductors are covered with flat insulating coating disposed facing the respective end portions, said plurality of flat at a position corresponding to each of the flat conductors of the plurality of flat cables in which the end facing After forming the overlapped portion by overlapping the connecting plate portions of the flat cable connection bracket over the cable, at least one cut is made in the overlapped portion at a position corresponding to the flat conductor of each flat cable. A flat cable and a flat cable connecting bracket in which the portions on both sides orthogonal to the cut are stepped, and the contact portions where the flat conductor and the connecting plate are in contact with each other are provided at the ends along the longitudinal direction of the cuts. In the connection method of
A plating material sheet is interposed between the overlapping surfaces of the flat cable and the connecting plate portion to form an overlapping portion, and the plating material sheet formed when the cut is made in the overlapping portion is sheared. A connecting method of a flat cable and a flat cable connecting metal fitting, characterized in that the contact portion is configured by interposing a plating layer extending portion by a gap between connection surfaces of the flat conductor and the connecting plate portion.

A plurality of flat cables in which a flat conductor is covered with a flat insulation coating are arranged with their ends facing each other, and the flat cables are arranged at positions corresponding to the flat conductors of the plurality of flat cables with the ends facing each other. A connecting portion of the flat cable connecting metal is overlapped across the cable to form an overlapping portion, and at least one cut is made in the overlapping portion at a location corresponding to the flat conductor of each flat cable. and both side portions orthogonal to each slit are in staggered respectively, flat said contacting portion in which the flat conductor on the end portion along the longitudinal direction of each slit and said connecting plate portion is in contact with each other are provided, respectively At the connection between the cable and the flat cable connector,
Wherein the overlapping portions plating material sheet is interposed between the overlapping surfaces of the flat cable and the connecting plate portion is formed, the plated material sheet formed when put the cut in the overlapping portions A connecting portion between a flat cable and a flat cable connecting metal fitting, wherein the contact portion is configured by interposing a plating layer extending portion by shearing between connecting surfaces of the flat conductor and the connecting plate portion.

The method for connecting a flat cable and a flat cable connecting metal fitting according to any one of claims 1, 3, and 7, wherein the contact portion is subjected to an electric heating treatment.

The connecting portion between the flat cable and the flat cable connecting bracket according to any one of claims 2, 4, and 8, wherein the contact portion is subjected to an electric heating treatment.

The method for connecting a flat cable and a flat cable connecting metal fitting according to any one of claims 1, 3, and 7, wherein the contact portion is heated in an inert gas.

The connecting portion between the flat cable and the flat cable connecting metal fitting according to any one of claims 2, 4, and 8, wherein the contact portion is heat-treated in an inert gas.