JP4213296B2

JP4213296B2 - Low insertion force / High removal force connector

Info

Publication number: JP4213296B2
Application number: JP16173399A
Authority: JP
Inventors: 雅之平本
Original assignee: JST Mfg Co Ltd
Current assignee: JST Mfg Co Ltd
Priority date: 1999-06-08
Filing date: 1999-06-08
Publication date: 2009-01-21
Anticipated expiration: 2019-06-08
Also published as: JP2000353558A

Description

【０００１】
【発明の属する技術分野】
本発明は、挿入された導体物に当該挿入方向と交差する方向から接触するコンタクトを備えたコネクタの技術分野に属し、具体的にはプリント配線板、ＭＩＤ（表面に金属膜が蒸着された樹脂板）等に接続するカードエッジ型コネクタの技術分野、コネクタ同士で嵌合して接続する雄雌コネクタの技術分野、並びにピン、タブ又はポスト等の雄コネクタが嵌合する筒形部を有したソケット、リセプタクル等の雌コネクタの技術分野に属し、導体物の挿入力を小さくしながら抜去力を大きくするための対策に関する。
【０００２】
【従来の技術】
従来、ボード・ツー・ボードの接続を行う一対のコネクタとして、中央の凹陥部にコンタクトが配設された雌コネクタと、上記凹陥部に嵌合する凸部にコンタクトを備えた雄コネクタとを組み合わせたものが知られている。このような一対の雄雌コネクタを対象にして、例えば特開平９−２６６０３６号公報には、図１６に示すように、雌コネクタ（イ）における逆Ｕ字形のコンタクト（ロ）を、ある程度撓ませた状態でコンタクト先端（ハ）をハウジング（ニ）に係止させておくことで、コンタクト（ロ）の変位量を抑えて雄コネクタ（ホ）の雌コネクタ（イ）への挿入力を小さくすると共に、コンタクト（ロ）の座屈を防止して雄コネクタ（ホ）の雌コネクタ（イ）からの抜去力を大きくするようにした技術が開示されている。
【０００３】
【発明が解決しようとする課題】
この雌コネクタ（イ）において更に雄コネクタ（ホ）の抜去力を大きくするには、コンタクト（ロ）の復元力を大きくして接触力を高く設定することになるが、そうすれば雄コネクタ（ホ）の挿入に大きな力を要することになり、挿入時の取扱い性が悪くなる。さりとて、挿入を容易にするためにコンタクト（ロ）の復元力を控えめに設定すれば、雄コネクタ（ホ）が不用意に抜け落ちる事故が起こり、雌コネクタ（イ）の信頼性が低下する。
【０００４】
その場合、ロック機構を設けて、雄コネクタ（ホ）が雌コネクタ（イ）に挿入された状態で両コネクタ（イ）、（ホ）をロックするようにしてもよいが、ロック機構を設ける分だけ構造が複雑になり、コストが高くつき、コンパクト性を損なうことになる。
【０００５】
本発明の目的は、このような雄雌コネクタをはじめ、カードエッジ型のコネクタ、そして筒形部を有する雌コネクタ等を広く対象として低挿入力・高抜去力コネクタを提供することにある。すなわち、導体物の挿入時にはコンタクトが軽く押し下げられ、導体物の抜去（抜き去ること）時にはコンタクトが導体物を強く押圧するようにすることで、導体物の挿入に要する力を小さくしながら導体物の抜去に要する力を大きくして、導体物の挿入時の取扱い性向上と保持力の強化によるコネクタの信頼性向上を両立させ、これをロック機構等を設けることなく実現して、コネクタのコスト低減及びコンパクト化を達成するものである。
【０００６】
【課題を解決するための手段】
上記目的を達成するため、請求項１の低挿入力・高抜去力コネクタは、挿入された導体物に当該挿入方向と交差する方向から接触するコンタクトを備えたコネクタにおいて、コネクタ本体には、導体物が挿入・抜去される受入部と、この受入部から導体物の移動方向と交差する方向に延びる支持壁と、この支持壁の導体物挿入方向の奥に位置する収納部とが設けられていると共に、この収納部にコンタクトが配設されており、上記コンタクトは、受入部側から順に、収納部における導体物挿入方向の手前から奥に向かって延びて手前部分が収納部に収まると共に奥部分が受入部に出てから収納部に向かって反転する接触部と、接触部の上記奥部分に連設されると共に中途部分が導体物挿入方向の手前に向かって湾曲し且つ支持壁との間に導体物移動方向に隙間を有する湾曲部と、コネクタ本体に固定された固定部とを備え、上記受入部に上記導体物を挿入すると、上記導体物が上記接触部の奥部分に当たり、上記湾曲部が圧縮されることで上記奥部分が上記収納部に収まり、上記接触部のほぼ全体が上記収納部の上記受入部との境界面に位置して上記接触部が全面で導体物に接触し、上記導体物を上記受入部から抜去すると、上記接触部が導体物抜去方向に引きずられて上記手前部分が上記収納部の支持壁に当たり、ここを支点にして上記接触部の奥部分が上記受入部に向かって起き上がり、ほぼ点接触に近い状態で上記導体物に当たるように構成されている。ここで、導体物とは、一部又は全体が導体で形成された物品をいう。
【０００７】
このコネクタは、固定部を例えばプリント配線板、ＭＩＤ、柔軟性に富む樹脂等の薄板又は膜に導体を固定してなるフレキシブル・プリント配線板（以下、ＦＰＣという）等に電気的に接続することで使用される。そして、受入部に導体物を挿入すると、導体物が接触部の奥部分に当たり、接触部が導体物挿入方向で且つ受入部から離れる方向へ押圧される。その場合、湾曲部が圧縮されて湾曲部分中央の角度が減少するので、接触部の奥部分が収納部に収まり、接触部のほぼ全体が収納部の受入部との境界面に位置する。そのため、接触部が全面で導体物に接触することになり、導体物挿入時に導体物が接触部から受ける接触圧が適正に抑えられ、導体物の挿入に要する力が小さくなる。一方、導体物を受入部から抜去すると、接触部が導体物抜去方向に引きずられる。その場合、接触部の手前部分が収納部の支持壁に当たり、ここを支点にして接触部の奥部分が受入部に向かって起き上がり、ほぼ点接触に近い状態で導体物に当たって強く押圧するので、導体物の抜去に要する力が大きくなり、コネクタにおける導体物の保持力が高くなる。また、ロック機構等を設けるものではないので、コネクタのコストが低減され、コンパクト化が達成される。
【０００８】
請求項２の低挿入力・高抜去力コネクタは、請求項１記載の構成において、コネクタ本体が絶縁体よりなるハウジングであり、コンタクトが更に、固定部に連設され且つハウジングの外部へ導出された接続部を備えていることを特徴としている。
【０００９】
このコネクタはカードエッジ型コネクタ、及びコネクタ同士で嵌合して接続する雄雌コネクタ等として用いられるものであり、接続部を、例えばプリント配線板、ＭＩＤ、ＦＰＣ等にハンダ付けすることで使用される。そして、導体物の挿入・抜去時の作用は請求項１の場合と同様であるので、請求項１における作用の記載をそのまま引用する。
【００１０】
請求項３の低挿入力・高抜去力コネクタは、請求項１記載の構成において、コネクタ本体が導体よりなる筒形部である。
【００１１】
このコネクタはピン、タブ又はポスト等の雄コネクタが嵌合する筒形部を有したソケット、リセプタクル等の雌コネクタ等として用いられるものであり、例えばコネクタ本体のバレルにハーネスを圧着することで使用される。そして、導体物の挿入・抜去時の作用は請求項１の場合と同様であるので、請求項１における作用の記載をそのまま引用する。
【００１２】
請求項４の低挿入力・高抜去力コネクタは、請求項１ないし３のうちいずれか１項の構成において、支持壁に、コンタクトにおける接触部の手前部分を受け止める突起が設けられている。
【００１３】
このようにすれば、コネクタを受入部から抜去するときに、接触部の手前部分が突起に受け止められるから、接触部の奥部分のコネクタへの押圧力が強くなり、コネクタの抜去に要する力が更に大きくなり、コネクタにおける導体物の保持力が更に高くなる。
【００１４】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて説明する。図１は、本発明の低挿入力・高抜去力コネクタの第１実施形態に係るカードエッジ型のコネクタＣを示す。図２に示すように、このコネクタＣは、ＶＴＲのドラムヘッドＤに内蔵されたプリント配線板、ＭＩＤ等の板状の導体物ＰにＦＰＣ（Ｂ）を接続するために用いられる。ドラムヘッドＤの側壁からは導体物Ｐの舌片形の部分が突出しており、この導体物Ｐに上記コネクタＣが接続される。
【００１５】
図１において、１０はコネクタＣにおけるコネクタ本体としてのハウジングであって、このハウジング１０は絶縁体により正面視が矩形の厚板形に形成され、正面にドラムヘッドＤの導体物Ｐの周囲に凹陥形成された穴Ｈに嵌合するように凸部１１が形成されている。このハウジング１０には導体物Ｐが挿入・抜去される通路である受入部１２が形成されている。この受入部１２は、ハウジング１０の正面に導体物Ｐの幅及び高さにほぼ合う開口を有してハウジング１０を厚さ方向に貫通しており、導体物Ｐを正面側から挿入し、また正面側に抜去できるようになっている。以下、全ての実施形態において、導体物Ｐを挿入する方向を導体物挿入方向といい、導体物挿入方向の前方を奥、後方を手前という。また導体物Ｐを抜去する方向を導体物抜去方向といい、導体物挿入方向及び導体物抜去方向を併せて導体物移動方向という。
【００１６】
上記ハウジング１０には更に、受入部１２から導体物Ｐの移動方向と交差する方向に延びる支持壁１３と、この支持壁１３の導体物挿入方向の奥に位置して上記受入部１２に連通する収納部１４とが設けられている。この実施形態では、受入部１２を挟んで上下に対向して収納部１４が形成され、且つ上側でも下側でも複数の収納部１４がハウジング１０の幅方向に並列に形成されており、上側の収納部１４はハウジング１０の上壁に、下側の収納部１４はハウジング１０の下壁に開口している。そして、収納部１４にはそれぞれ、挿入された導体物Ｐに当該挿入方向と交差する方向から接触するコンタクト２０が配設されている。このコンタクト２０はリン青胴板で例示されるような導電性の帯状板を折曲げて形成されている。１５は収納部１４の導体物挿入方向の奥に形成された奥壁であるが、この奥壁１５を設けるか否かは任意的事項である。
【００１７】
図３及び図４に示すように、上記コンタクト２０は受入部側から順に、すなわち受入部１２から離れる方向に順に接触部２１と、湾曲部２２と、固定部２３と、接続部２４とを備え、これらが一連に形成されている。接触部２１は、収納部１４における導体物挿入方向の手前から奥に向かって延びて手前部分２１ａが収納部１４に収まると共に、奥部分２１ｂが受入部１２に出てから収納部１４に向かって反転しており、この奥部分２１ｂは奥壁１５との間に導体物移動方向に隙間ｔ₁を有している。
【００１８】
上記湾曲部２２は、接触部２１の上記奥部分２１ｂに連設されると共に中途部分２２ａが手前に向かって湾曲し且つ収納部１４の支持壁１３との間で導体物移動方向に隙間ｔ₂を有している。
【００１９】
上記固定部２３は、コンタクト２０の他の部分よりも幅が広く形成されており、コンタクト２０を収納部１４に圧入したときに支持壁１３に食い込むことでコンタクト２０をハウジング１０に固定する。上記接続部２４は、ハウジング１０の上壁又は下壁に開口する収納部１４から上方又は下方に導出されている。
【００２０】
上記コネクタＣの使用方法を説明する。図２に示すように、上記ＦＰＣ（Ｂ）の先端には窓Ｗが開口しており、この窓Ｗの上辺及び下辺には内側に向けて導体Ｔが露出されている。まず、コネクタＣのハウジング凸部１１をＦＰＣ（Ｂ）の窓Ｗに嵌合し、コネクタＣのコンタクト２０の接続部２４を導体Ｔにそれぞれ半田付け等で接続する。次いで、ＦＰＣ（Ｂ）の付いたコネクタＣをドラムヘッドＤに近づけて、受入部１２に導体物Ｐを挿入すると、接続が完了する。
【００２１】
ここで、図５（ａ）に示すように、受入部１２に導体物Ｐを挿入すると、導体物Ｐが接触部２１の奥部分２１ｂに当たり、接触部２１が導体物挿入方向で且つ受入部１２から離れる方向へ押圧される。その場合、図５（ｂ）から（ｃ）に示すように、湾曲部２２が圧縮されて湾曲部分中央の角度Ｇ（図４（ｂ）を参照）が減少するので、接触部２１の奥部分２１ｂが収納部１４に収まり、接触部２１のほぼ全体が収納部１４の受入部１２との境界面１４ａに位置する。そのため、接触部２１が全面で導体物Ｐに接触することになり、導体物挿入時に導体物Ｐが接触部２１から受ける接触圧が適正に抑えられ、導体物Ｐの挿入に要する力が小さくなる。一方、図６（ａ）に示すように、導体物Ｐを受入部１２から抜去すると、接触部２１が導体物抜去方向に引きずられる。その場合、図６（ｂ）から（ｃ）に示すように、接触部２１の手前部分２１ａが収納部１４の支持壁１３に当たり、ここを支点にして接触部２１の奥部分２１ｂが受入部１２に向かって起き上がり、ほぼ点接触に近い状態で導体物Ｐに当たって強く押圧するので、導体物Ｐの抜去に要する力が大きくなり、コネクタＣにおける導体物Ｐの保持力が高くなる。よって、導体物挿入時の取扱い性向上と導体物保持力の強化によるコネクタＣの信頼性向上を両立させることができる。また、ロック機構等を設けるものではないので、コネクタＣのコストが低減され、コンパクト化が達成される。さらに、コンタクト２０が導体物Ｐに対してほぼ直立しているので、コネクタＣの導体物挿入方向への長さが短くなり、導体物Ｐまわりがコンパクトになる。
【００２２】
この実施形態ではコンタクト接触部２１の手前部分２１ａの形状を細かく限定するものではないが、上記コンタクト２０を板材から打ち抜き、折曲げて成形するときには、図７に示すように、接触部２１の手前部分２１ａが導体物抜去方向に流れて尖るように加工方向を選択すれば、導体物Ｐを受入部１２から抜去するときに、この尖った接触部２１の手前部分２１ａが収納部１４の支持壁１３にしっかりと食いつくから、支点としての機能を十分に果たして接触部２１の奥部分２１ｂの導体物Ｐへの押圧力が強くなり、導体物Ｐの抜去に要する力が更に大きくなり、コネクタＣにおける導体物Ｐの保持力が更に高くなる。
【００２３】
さらに、図８に示すように、支持壁１３に、コンタクト２０における接触部２１の手前部分２１ａを受け止める突起１６を設けたときには、導体物Ｐを受入部１２から抜去するときに、接触部２１の手前部分２１ａが突起１６に受け止められるから、接触部２１の奥部分２１ｂの導体物Ｐへの押圧力が強くなり、導体物Ｐの抜去に要する力が更に大きくなり、コネクタＣにおける導体物Ｐの保持力が更に高くなる。
【００２４】
本発明は上記第１実施形態により限定されるものではない。上記実施形態ではハウジング１０の形状を特定したが、これはドラムヘッド等の相手側部材への取り付け勝手に応じて自在に変更が許容されるところである。また、受入部１２がハウジング１０を貫通したが、受入部の奥側を袋状にしてもよい。さらに収納部１４をハウジング１０の上壁又は下壁に開口させたが、これも袋状にしてよい。また、コンタクト２０の固定部２３は幅広に形成したが、コンタクトをハウジングに固定する構造であれば他の構造であってもよい。さらに、上記実施形態では、受入部１２を挟んで上下に対向して収納部１４を形成してコンタクト２０を配設し、且つ収納部１４及びコンタクト２０を上側でも下側でも複数並列に設けたが、収納部及びコンタクトは１個であってもよく、また複数の場合、配列は任意である。また、上記実施形態ではＶＴＲのドラムヘッドＤの導体物Ｐを挿入・抜去するコネクタＣを例示したが、他の機器の導体物Ｐを挿入・抜去するコネクタであってもよい。さらに、コネクタの接続部に接続する対象はＦＰＣに限定されるものではなく、ハーネスその他の電気部品であってもよい。
【００２５】
図９は、本発明の低挿入力・高抜去力コネクタの第２実施形態に係る雄コネクタＣを示す。この雄コネクタＣは、コネクタ同士で嵌合して接続する雄雌コネクタのうちの一方である。従って、この実施形態では導体物Ｐは相手の雌コネクタである。そして、雄コネクタＣをプリント配線板Ｂに実装し、導体物Ｐをプリント配線板Ｄに実装して、雄コネクタＣを導体物Ｐに嵌合することでボード・ツー・ボードの接続を行うようにしている。
【００２６】
図９において、１１０は雄コネクタＣにおけるコネクタ本体としてのハウジングであって、このハウジング１１０は絶縁体により長さ方向（図９の紙面に垂直な方向）の断面形状が、相手のプリント配線板Ｄに向かって凸形になるよう形成されており、導体物Ｐの央部に凹陥形成された凹陥部に嵌合できるようになっている。なお、ハウジング１１０の長さは並設されるコンタクトの本数に応じて任意に決められる。このハウジング１１０には導体物Ｐが挿入・抜去される凹陥部である受入部１１２が形成されている。この受入部１１２は、ハウジング１１０の高さ方向（図９の左右方向）の先端側において、幅方向（図９の上下方向）の両側壁をプリント配線板Ｂに垂直な平面にすることで形成されており、導体物Ｐをプリント配線板Ｂに向かって挿入し、またプリント配線板Ｂから離れる方向に抜去できるようになっている。
【００２７】
上記ハウジング１１０には、受入部１１２から導体物Ｐの移動方向と交差する方向に延びる支持壁１１３と、この支持壁１１３の導体物挿入方向の奥に位置して上記受入部１１２に連通する収納部１１４とが設けられている。この実施形態では、受入部１１２及び収納部１１４が上下に対向して形成されている。そして、収納部１１４にはそれぞれコンタクト１２０が配設されている。このコンタクト１２０はリン青胴板で例示されるような導電性の帯状板を折曲げて形成されている。
【００２８】
図１０に示すように、上記コンタクト１２０は受入部側から順に、すなわち受入部１１２から離れる方向に順に接触部１２１と、湾曲部１２２と、固定部１２３と、接続部１２４とを備え、これらが一連に形成されている。接触部１２１は、収納部１１４における導体物挿入方向の手前から奥に向かって延びて手前部分１２１ａが収納部１１４に収まると共に、奥部分１２１ｂが受入部１１２に出てから収納部１１４に向かって反転している。
【００２９】
上記湾曲部１２２は、接触部１２１の上記奥部分１２１ｂに連設されると共に中途部分１２２ａが手前に向かって湾曲し且つ収納部１１４の支持壁１１３との間で導体物移動方向に隙間ｔを有している。
【００３０】
上記固定部１２３は、圧入、溶着等によりハウジング１１０に固定されている。上記接続部１２４は、ハウジング１１０の外部に導出されてプリント配線板Ｂに半田付け等できるようになっている。
【００３１】
この雄コネクタＣに導体物Ｐを嵌合すると、導体物Ｐの周壁がその内側に装着したコンタクトｐと共に雄コネクタＣの受入部１１２に挿入される。そして、導体物Ｐの周壁が接触部１２１の奥部分１２１ｂに当たり、接触部１２１が導体物挿入方向で且つ受入部１１２から離れる方向へ押圧される。その場合、湾曲部１２２が圧縮されて湾曲部分中央の角度Ｇが減少するので、接触部１２１の奥部分１２１ｂが収納部１１４に収まり、接触部１２１のほぼ全体が収納部１１４の受入部１１２との境界面１１４ａに位置する。そのため、接触部１２１が全面で導体物Ｐに接触することになり、導体物挿入時に導体物Ｐが接触部１２１から受ける接触圧が適正に抑えられ、導体物Ｐの挿入に要する力が小さくなる。一方、導体物Ｐを受入部１１２から抜去すると、接触部１２１が導体物抜去方向に引きずられる。その場合、接触部１２１の手前部分１２１ａが収納部１１４の支持壁１１３に当たり、ここを支点にして接触部１２１の奥部分１２１ｂが受入部１１２に向かって起き上がり、ほぼ点接触に近い状態で導体物Ｐに当たって強く押圧するので、導体物Ｐの抜去に要する力が大きくなり、雄コネクタＣにおける導体物Ｐの保持力が高くなる。よって、導体物挿入時の取扱い性向上と導体物保持力の強化による雄コネクタＣの信頼性向上を両立させることができる。また、ロック機構等を設けるものではないので、雄コネクタＣのコストが低減され、コンパクト化が達成される。
【００３２】
この第２実施形態においても第１実施形態で説明したように、接触部１２１の手前部分１２１ａが導体物抜去方向に流れて尖るように加工方向を選択したときには、導体物Ｐを受入部１１２から抜去するときに、この尖った接触部１２１の手前部分１２１ａが収納部１１４の支持壁１１３にしっかりと食いつくから、支点としての機能を十分に果たして接触部１２１の奥部分１２１ｂの導体物Ｐへの押圧力が強くなり、導体物Ｐの抜去に要する力が更に大きくなり、雄コネクタＣにおける導体物Ｐの保持力が更に高くなる。
【００３３】
さらに、図１１に示すように、支持壁１１３に、コンタクト１２０における接触部１２１の手前部分１２１ａを受け止める突起１１６を設けたときには、導体物Ｐを受入部１１２から抜去するときに、接触部１２１の手前部分１２１ａが突起１１６に受け止められるから、接触部１２１の奥部分１２１ｂの導体物Ｐへの押圧力が強くなり、導体物Ｐの抜去に要する力が更に大きくなり、雄コネクタＣにおける導体物Ｐの保持力が更に高くなる。
【００３４】
本発明は上記第２実施形態により限定されるものではない。上記第２実施形態とは逆に雄コネクタＣを凹側の雌コネクタとし、組み合わせる導体物Ｐを凸側の雄コネクタとしてもよい。また、ハウジングの形状等を特定したが、コネクタ同士で嵌合して接続する雄雌コネクタであれば、形状を問わずに本発明は適用できる。また、上記第２実施形態では、上下に対向して収納部１１４を形成してコンタクト１２０を配設し、且つ収納部１１４及びコンタクト１２０を複数並列に設けたが、収納部及びコンタクトは１個であってもよく、また複数の場合、配列は任意である。さらに、上記第２実施形態ではボード・ツー・ボードの接続に使用する雄コネクタＣを例示したが、他の用途向けの雄雌コネクタであってもよい。
【００３５】
図１２は、本発明の低挿入力・高抜去力コネクタの第３実施形態を示す。このコネクタＣは、筒形部を有したソケット、リセプタクル等の雌コネクタである。従って、この実施形態では導体物Ｐはピン、タブ又はポスト等の雄コネクタである。コネクタＣ及び導体物Ｐには、それぞれハーネスが圧着等により接続されており、コネクタＣ及び導体物Ｐの嵌合によりハーネス同士が接続される。一般にコネクタＣ及び導体物Ｐはそれぞれ絶縁性のハウジングに収容され、このハウジングの嵌合により接続される。
【００３６】
図１２及び図１３において、２１０はコネクタＣにおけるコネクタ本体としての筒形部であって、導体で形成され、前端の開口から導体物Ｐが挿入される。また、筒形部２１０の後端には内側に折り曲げられることでハーネスＢ及び芯線Ｔを圧着するバレル２１１が形成されている。
【００３７】
この筒形部２１０の内部には導体物Ｐが挿入・抜去される受入部２１２が形成されている。この受入部２１２は、前端上部の開口から始まり、上壁に沿って後方に向かって延びた通路であり、導体物Ｐを後方に向かって挿入し、また前方に向かって抜去できるようになっている。
【００３８】
上記筒形部２１０には、受入部２１２から導体物Ｐの移動方向と交差する方向に延びる支持壁２１３と、この支持壁２１３の導体物挿入方向の奥に位置して上記受入部２１２に連通する収納部２１４とが設けられている。そして、収納部２１４にはコンタクト２２０が配設され、筒形部２１０に固定されている。このコンタクト２２０は例えば筒形部２１０と一連に成形され、例えば板材から展開形状で打ち抜き、その各所を曲げ加工することで筒形部２１０及びコンタクト２２０を成形する。２１５は収納部２１４の導体物挿入方向の奥に形成された奥壁であるが、この奥壁２１５を設けるか否かは任意的事項である。
【００３９】
図１４に示すように、上記コンタクト２２０は受入部側から順に、すなわち受入部２１２から離れる方向に順に接触部２２１と、湾曲部２２２と、固定部２２３を備え、これらが一連に形成されている。接触部２２１は、収納部２１４における導体物挿入方向の手前から奥に向かって延びて手前部分２２１ａが収納部２１４に収まると共に、奥部分２２１ｂが受入部２１２に出てから収納部２１４に向かって反転しており、この奥部分２２１ｂは奥壁２１５との間に導体物移動方向に隙間ｔ₁を有している。
【００４０】
上記湾曲部２２２は、接触部２２１の上記奥部分２２１ｂに連設されると共に中途部分２２２ａが手前に向かって湾曲し且つ収納部２１４の支持壁２１３との間で導体物移動方向に隙間ｔ₂を有している。上記固定部２２３は、筒形部２１０に一体的に固定されている。
【００４１】
このコネクタＣのバレル２１１にハーネスＢを圧着し、受入部２１２に導体物Ｐを挿入すると、導体物Ｐが接触部２２１の奥部分２２１ｂに当たり、接触部２２１が導体物挿入方向で且つ受入部２１２から離れる方向へ押圧される。その場合、湾曲部２２２が圧縮されて湾曲部分中央の角度Ｇが減少するので、接触部２２１の奥部分２２１ｂが収納部２１４に収まり、接触部２２１のほぼ全体が収納部２１４の受入部２１２との境界面２１４ａに位置する。そのため、接触部２２１が全面で導体物Ｐに接触することになり、導体物挿入時に導体物Ｐが接触部２２１から受ける接触圧が適正に抑えられ、導体物Ｐの挿入に要する力が小さくなる。一方、導体物Ｐを受入部２１２から抜去すると、接触部２２１が導体物抜去方向に引きずられる。その場合、接触部２２１の手前部分２２１ａが収納部２１４の支持壁２１３に当たり、ここを支点にして接触部２２１の奥部分２２１ｂが受入部２１２に向かって起き上がり、ほぼ点接触に近い状態で導体物Ｐに当たって強く押圧するので、導体物Ｐの抜去に要する力が大きくなり、コネクタＣにおける導体物Ｐの保持力が高くなる。よって、導体物挿入時の取扱い性向上と導体物保持力の強化によるコネクタＣの信頼性向上を両立させることができる。また、ロック機構等を設けるものではないので、コネクタＣのコストが低減され、コンパクト化が達成される。
【００４２】
この第３実施形態においても第１実施形態で説明したように、接触部２２１の手前部分２２１ａが導体物抜去方向に流れて尖るように加工方向を選択したときには、導体物Ｐを受入部２１２から抜去するときに、この尖った接触部２２１の手前部分２２１ａが収納部２１４の支持壁２１３にしっかりと食いつくから、支点としての機能を十分に果たして接触部２２１の奥部分２２１ｂの導体物Ｐへの押圧力が強くなり、導体物Ｐの抜去に要する力が更に大きくなり、コネクタＣにおける導体物Ｐの保持力が更に高くなる。
【００４３】
さらに、図１５に示すように、支持壁２１３に、コンタクト２２０における接触部２２１の手前部分２２１ａを受け止める突起２１６を設けたときには、導体物Ｐを受入部２１２から抜去するときに、接触部２２１の手前部分２２１ａが突起２１６に受け止められるから、接触部２２１の奥部分２２１ｂの導体物Ｐへの押圧力が強くなり、導体物Ｐの抜去に要する力が更に大きくなり、コネクタＣにおける導体物Ｐの保持力が更に高くなる。
【００４４】
本発明は上記第３実施形態により限定されるものではない。上記第２実施形態では筒形部２１０の上部に受入部２１２を形成したが、下部に形成してもよい。そのときにはコンタクトは筒形部の上壁に固定されることになる。なお、本発明は以上の各実施形態の特徴を種々組み合わせた実施形態を含むものである。
【００４５】
【発明の効果】
以上説明したように、請求項１の低挿入力・高抜去力コネクタは、導体物の挿入時にはコンタクトが軽く押し下げられ、導体物の抜去時にはコンタクトが導体物を強く押圧するので、導体物の挿入に要する力を小さくしながら導体物の抜去に要する力を大きくして、コネクタにおける導体物の挿入時の取扱い性向上と保持力の強化によるコネクタの信頼性向上を両立させることができる。しかも、この効果をロック機構等を設けることなく実現したから、コネクタのコスト低減及びコンパクト化を図ることができる。
【００４６】
請求項２の低挿入力・高抜去力コネクタは、カードエッジ型コネクタ、及びコネクタ同士で嵌合して接続する雄雌コネクタ等に適用して請求項１の効果を得るのに最適である。
【００４７】
請求項３の低挿入力・高抜去力コネクタは、ピン、タブ又はポスト等の雄コネクタが嵌合する筒形部を有したソケット、リセプタクル等の雌コネクタ等に適用して請求項１の効果を得るのに最適である。
【００４８】
請求項４のようにすれば、コネクタにおける導体物の保持力を更に高くすることができ、コネクタの信頼性を更に向上することができる。
【図面の簡単な説明】
【図１】本発明の第１実施形態に係るカードエッジ型のコネクタを示し、（ａ）は導体物を挿入する側からみた正面図、（ｂ）は底面図である。
【図２】上記コネクタと、これが取り付けられるビデオデッキのドラムヘッド及びＦＰＣを縮小して示す斜視図である。
【図３】図１（ａ）のＡ−Ａ線における断面を拡大して示す図である。
【図４】上記コネクタのコンタクトを示し、（ａ）は導体物を挿入する側からみた正面図、（ｂ）は側面図である。
【図５】上記コネクタで導体物を挿入する時のコンタクトの変形を順に説明する図である。
【図６】上記コネクタで導体物を抜去する時のコンタクトの変形を順に説明する図である。
【図７】上記コネクタのコンタクトの接触部の手前部分を拡大して示す図である。
【図８】第１実施形態の変形例における図６相当図である。
【図９】第２実施形態に係るコネクタに導体物を嵌合した状態で示す断面図である。
【図１０】図９の要部を、導体物を抜去した状態で示す拡大図である。
【図１１】第２実施形態の変形例を示す図１０相当図である。
【図１２】第３実施形態に係るコネクタを示す斜視図である。
【図１３】上記コネクタの拡大縦断面図である。
【図１４】図１３の要部を示す拡大図である。
【図１５】第３実施形態の変形例を示す図１１相当図である。
【図１６】従来例を示す断面図である。
【符号の説明】
Ｃカードエッジ型のコネクタ
１０ハウジング
１２受入部
１３支持壁
１４収納部
１４ａ境界面
１６突起
２０コンタクト
２１接触部
２１ａ手前部分
２１ｂ奥部分
２２湾曲部
２２ａ中途部分
２３固定部
２４接続部
Ｐ導体物（プリント配線板）
Ｃ雄コネクタ
１１０ハウジング
１１２受入部
１１３支持壁
１１４収納部
１１４ａ境界面
１１６突起
１２０コンタクト
１２１接触部
１２１ａ手前部分
１２１ｂ奥部分
１２２湾曲部
１２２ａ中途部分
１２３固定部
１２４接続部
Ｐ導体物（雌コネクタ）
ｐコンタクト
Ｃ雌コネクタ
２１０筒形部
２１２受入部
２１３支持壁
２１４収納部
２１４ａ境界面
２１６突起
２２０コンタクト
２２１接触部
２２１ａ手前部分
２２１ｂ奥部分
２２２湾曲部
２２２ａ中途部分
２２３固定部
Ｐ導体物（雄コネクタ）[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to the technical field of a connector having a contact that contacts an inserted conductor from a direction crossing the insertion direction, specifically, a printed wiring board, MID (resin having a metal film deposited on the surface). Technical field of card edge type connectors to be connected to the board), male and female connectors to be fitted and connected to each other, and a cylindrical portion into which male connectors such as pins, tabs or posts are fitted. The present invention belongs to the technical field of female connectors such as sockets and receptacles, and relates to measures for increasing the removal force while reducing the insertion force of the conductor.
[0002]
[Prior art]
Conventionally, as a pair of connectors for board-to-board connection, Fall A female connector with contacts disposed on the Fall A combination of a male connector provided with a contact on a convex part that fits into the part is known. For such a pair of male and female connectors, for example, in Japanese Patent Laid-Open No. 9-266036, as shown in FIG. 16, the inverted U-shaped contact (B) in the female connector (A) is bent to some extent. In this state, the contact tip (c) is locked to the housing (d) to reduce the displacement of the contact (b) and reduce the insertion force of the male connector (e) into the female connector (a). At the same time, a technique is disclosed in which the buckling of the contact (b) is prevented to increase the pulling force of the male connector (e) from the female connector (a).
[0003]
[Problems to be solved by the invention]
In order to further increase the pulling force of the male connector (e) in this female connector (b), the restoring force of the contact (b) is increased to set the contact force high. (E) A large force is required for insertion, and handling at the time of insertion is deteriorated. If the restoring force of the contacts (b) is set conservatively to facilitate the insertion, an accident that the male connector (e) falls out carelessly occurs, and the reliability of the female connector (a) decreases.
[0004]
In that case, a locking mechanism may be provided to lock both connectors (A) and (E) with the male connector (E) inserted into the female connector (A). Only the structure becomes complicated, the cost increases, and the compactness is lost.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to provide a low insertion force / high removal force connector widely applicable to such male and female connectors, card edge type connectors, female connectors having a cylindrical portion, and the like. In other words, the contact is pressed down lightly when the conductor is inserted, and the contact is pressed strongly against the conductor when the conductor is removed (removed), thereby reducing the force required to insert the conductor. By increasing the force required to remove the connector, it is possible to achieve both improved handling when inserting conductors and improved connector reliability by strengthening the holding force, which can be realized without a locking mechanism, etc. Reduction and downsizing are achieved.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a low insertion force / high removal force connector according to claim 1 is a connector provided with contacts that contact an inserted conductor from a direction intersecting the insertion direction. , A receiving portion from which the conductor is inserted / extracted, a support wall extending from the receiving portion in a direction intersecting the moving direction of the conductor, and a storage portion located at the back of the support wall in the conductor insertion direction are provided. In addition, a contact is disposed in the storage portion, and the contact is , In order from the receiving part side, the contact part that extends toward the back from the front side in the conductor insertion direction in the storage part, the front part fits in the storage part, and the back part exits the receiving part and then reverses toward the storage part, A curved portion that is connected to the inner portion of the contact portion and is bent toward the front of the conductor insertion direction and has a gap in the conductor movement direction between the support wall and the connector body, and is fixed to the connector body. With a fixed part When the conductor is inserted into the receiving part, the conductor hits the back part of the contact part, the curved part is compressed, the back part fits in the storage part, and almost the entire contact part is When the contact portion is located on the boundary surface with the receiving portion of the storage portion and contacts the conductor on the entire surface, and the conductor is removed from the receiving portion, the contact portion is dragged in the conductor removal direction. The front portion hits the support wall of the storage portion, and the back portion of the contact portion rises toward the receiving portion with this point as a fulcrum, and is configured to contact the conductor object in a state that is almost close to point contact. ing. Here, the conductor object means an article partly or entirely formed of a conductor.
[0007]
In this connector, the fixed part is electrically connected to a flexible printed wiring board (hereinafter referred to as an FPC) in which a conductor is fixed to a printed wiring board, a MID, a thin plate such as a flexible resin, or a film, for example. Used in. When the conductor is inserted into the receiving part, the conductor hits the back part of the contact part, and the contact part is pressed in the direction of inserting the conductor and away from the receiving part. In this case, since the bending portion is compressed and the angle at the center of the bending portion is reduced, the back portion of the contact portion is accommodated in the storage portion, and almost the entire contact portion is located at the boundary surface with the receiving portion of the storage portion. For this reason, the contact portion comes into contact with the conductor on the entire surface, and the contact pressure received by the conductor from the contact portion when the conductor is inserted is appropriately suppressed, and the force required to insert the conductor is reduced. On the other hand, when the conductor is removed from the receiving portion, the contact portion is dragged in the conductor removal direction. In that case, the front part of the contact part is support It hits the wall, the back part of the contact part rises toward the receiving part with this point as a fulcrum, and hits the conductor object and presses strongly in a state almost close to point contact, so the force required to remove the conductor object increases, and the conductor in the connector The holding power of things increases. In addition, since no locking mechanism or the like is provided, the cost of the connector is reduced, and compactness is achieved.
[0008]
According to a second aspect of the present invention, there is provided the low insertion force / high removal force connector according to the first aspect, wherein the connector main body is a housing made of an insulator, and the contact is further connected to the fixed portion and led out of the housing. It is characterized by having a connecting part.
[0009]
This connector is used as a card edge type connector, and a male / female connector that is connected and connected between the connectors, and is used by soldering the connecting part to, for example, a printed wiring board, MID, FPC, etc. The And since the effect | action at the time of insertion / extraction of a conductor is the same as that of the case of Claim 1, the description of the effect | action in Claim 1 is quoted as it is.
[0010]
According to a third aspect of the present invention, there is provided a low insertion force / high removal force connector according to the first aspect, wherein the connector body is a cylindrical portion made of a conductor.
[0011]
This connector is used as a female connector such as a socket having a cylindrical part to which a male connector such as a pin, a tab or a post fits, a receptacle, etc., for example, used by crimping a harness to the barrel of the connector body Is done. And since the effect | action at the time of insertion / extraction of a conductor is the same as that of the case of Claim 1, the description of the effect | action in Claim 1 is quoted as it is.
[0012]
According to a fourth aspect of the present invention, there is provided the low insertion force / high removal force connector according to any one of the first to third aspects, wherein the support wall is provided with a protrusion for receiving the front portion of the contact portion of the contact.
[0013]
In this way, when the connector is removed from the receiving part, the front part of the contact part is received by the protrusion, so that the pressing force to the connector at the back part of the contact part becomes strong, and the force required to remove the connector is increased. This further increases the holding power of the conductor in the connector.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a card edge type connector C according to a first embodiment of a low insertion force / high removal force connector of the present invention. As shown in FIG. 2, this connector C is used to connect the FPC (B) to a plate-like conductor P such as a printed wiring board or MID built in the drum head D of the VTR. A tongue-shaped portion of the conductor P projects from the side wall of the drum head D, and the connector C is connected to the conductor P.
[0015]
In FIG. 1, reference numeral 10 denotes a housing as a connector body in the connector C. The housing 10 is formed into a thick plate shape having a rectangular shape in front view by an insulator, and is recessed on the front surface around the conductor P of the drum head D. A convex portion 11 is formed so as to fit into the formed hole H. The housing 10 is formed with a receiving portion 12 that is a passage through which the conductor P is inserted and removed. The receiving portion 12 has an opening substantially matching the width and height of the conductor P on the front surface of the housing 10 and penetrates the housing 10 in the thickness direction. The conductor P is inserted from the front side, and It can be removed to the front side. Hereinafter, in all the embodiments, the direction in which the conductor P is inserted is referred to as the conductor insertion direction, the front in the conductor insertion direction is referred to as the back, and the rear is referred to as the front. The direction in which the conductor P is removed is referred to as the conductor removal direction, and the conductor insertion direction and the conductor removal direction are collectively referred to as the conductor movement direction.
[0016]
The housing 10 further includes a support wall 13 extending from the receiving portion 12 in a direction intersecting the moving direction of the conductor P, and is located in the back of the support wall 13 in the conductor insertion direction and communicates with the receiving portion 12. A storage unit 14 is provided. In this embodiment, the storage part 14 is formed so as to face up and down across the receiving part 12, and a plurality of storage parts 14 are formed in parallel in the width direction of the housing 10 both on the upper side and the lower side. The storage portion 14 opens in the upper wall of the housing 10, and the lower storage portion 14 opens in the lower wall of the housing 10. Each of the storage portions 14 is provided with a contact 20 that contacts the inserted conductor P from a direction intersecting the insertion direction. This contact 20 is formed by bending a conductive belt-like plate exemplified by a phosphor blue body plate. Reference numeral 15 denotes a back wall formed at the back of the storage portion 14 in the conductor insertion direction. Whether or not the back wall 15 is provided is an arbitrary matter.
[0017]
As shown in FIGS. 3 and 4, the contact 20 includes a contact portion 21, a bending portion 22, a fixing portion 23, and a connection portion 24 in order from the receiving portion side, that is, in the direction away from the receiving portion 12. These are formed in a series. The contact portion 21 extends from the front side in the conductor insertion direction of the storage portion 14 to the back side, the front portion 21a is accommodated in the storage portion 14, and the back portion 21b exits the receiving portion 12 and then toward the storage portion 14. The back portion 21b is spaced from the back wall 15 in the conductor moving direction t. ₁ have.
[0018]
The curved portion 22 is connected to the back portion 21 b of the contact portion 21, and the midway portion 22 a is curved toward the front, and a gap t is formed between the support wall 13 of the storage portion 14 in the conductor moving direction. ₂ have.
[0019]
The fixing part 23 is formed wider than the other part of the contact 20, and the contact 20 is fixed to the housing 10 by biting into the support wall 13 when the contact 20 is press-fitted into the storage part 14. The connecting portion 24 is led upward or downward from the storage portion 14 that opens in the upper wall or the lower wall of the housing 10.
[0020]
A method of using the connector C will be described. As shown in FIG. 2, a window W is opened at the tip of the FPC (B), and a conductor T is exposed inward at the upper and lower sides of the window W. First, the housing convex portion 11 of the connector C is fitted into the window W of the FPC (B), and the connection portion 24 of the contact 20 of the connector C is connected to the conductor T by soldering or the like. Next, when the connector C with the FPC (B) is brought close to the drum head D and the conductor P is inserted into the receiving portion 12, the connection is completed.
[0021]
Here, as shown in FIG. 5A, when the conductor object P is inserted into the receiving portion 12, the conductor object P hits the back portion 21 b of the contact portion 21, and the contact portion 21 is in the conductor insertion direction and the receiving portion 12. It is pressed away from the direction. In that case, as shown in FIGS. 5B to 5C, the bending portion 22 is compressed and the angle G (see FIG. 4B) at the center of the bending portion decreases, so that the back portion of the contact portion 21. 21 b is accommodated in the storage portion 14, and almost the entire contact portion 21 is located on the boundary surface 14 a between the storage portion 14 and the receiving portion 12. Therefore, the contact portion 21 comes into contact with the conductor P over the entire surface, and the contact pressure received by the conductor P from the contact portion 21 when the conductor is inserted is appropriately suppressed, and the force required for inserting the conductor P is reduced. . On the other hand, as shown in FIG. 6A, when the conductor P is removed from the receiving portion 12, the contact portion 21 is dragged in the conductor removal direction. In this case, as shown in FIGS. 6B to 6C, the front portion 21 a of the contact portion 21 hits the support wall 13 of the storage portion 14, and the back portion 21 b of the contact portion 21 is the receiving portion 12 with this as a fulcrum. Since the conductor P is strongly pressed against the conductor P in a state close to a point contact, the force required to remove the conductor P is increased, and the holding power of the conductor P in the connector C is increased. Therefore, it is possible to achieve both improvement in handling at the time of inserting the conductor and reliability improvement of the connector C by strengthening the holding power of the conductor. In addition, since no locking mechanism or the like is provided, the cost of the connector C is reduced, and compactness is achieved. Further, since the contact 20 is substantially upright with respect to the conductor P, the length of the connector C in the conductor insertion direction is shortened, and the periphery of the conductor P is compact.
[0022]
In this embodiment, the shape of the front portion 21a of the contact contact portion 21 is not limited in detail. However, when the contact 20 is punched from a plate material and bent and formed, as shown in FIG. If the machining direction is selected so that the portion 21a flows in the conductor removal direction and is sharpened, when the conductor P is removed from the receiving portion 12, the front portion 21a of the sharp contact portion 21 becomes the support wall of the storage portion 14. 13, the function as a fulcrum is sufficiently achieved, and the pressing force of the back portion 21 b of the contact portion 21 against the conductor P is increased, and the force required to remove the conductor P is further increased. The holding power of the conductor P is further increased.
[0023]
Furthermore, as shown in FIG. 8, when the support wall 13 is provided with a protrusion 16 that receives the front portion 21 a of the contact portion 21 in the contact 20, when the conductor P is removed from the receiving portion 12, Since the front portion 21 a is received by the protrusion 16, the pressing force of the back portion 21 b of the contact portion 21 against the conductor P is increased, and the force required to remove the conductor P is further increased, and the conductor P in the connector C is increased. Holding power is further increased.
[0024]
The present invention is not limited to the first embodiment. In the above embodiment, the shape of the housing 10 is specified, but this is where the change can be freely made according to the ease of attachment to the mating member such as a drum head. Moreover, although the receiving part 12 penetrated the housing 10, you may make the back | inner side of a receiving part into a bag shape. Furthermore, although the accommodating part 14 was opened by the upper wall or lower wall of the housing 10, this may be made into a bag shape. Further, although the fixing portion 23 of the contact 20 is formed wide, another structure may be used as long as the contact is fixed to the housing. Furthermore, in the above-described embodiment, the storage unit 14 is formed so as to be opposed to each other up and down with the receiving unit 12 interposed therebetween, and the contacts 20 are disposed, and a plurality of the storage units 14 and the contacts 20 are provided in parallel on the upper side and the lower side. However, the number of storage portions and contacts may be one, and in the case of a plurality, the arrangement is arbitrary. In the above embodiment, the connector C for inserting / removing the conductor P of the drum head D of the VTR is illustrated, but the connector C for inserting / removing the conductor P of other equipment may be used. Furthermore, the object to be connected to the connector connection portion is not limited to the FPC, and may be a harness or other electrical components.
[0025]
FIG. 9 shows a male connector C according to a second embodiment of the low insertion force / high removal force connector of the present invention. The male connector C is one of male and female connectors that are connected to each other by connectors. Therefore, in this embodiment, the conductor P is a mating female connector. Then, the male connector C is mounted on the printed wiring board B, the conductor P is mounted on the printed wiring board D, and the male connector C is fitted to the conductor P so that board-to-board connection is performed. I have to.
[0026]
In FIG. 9, reference numeral 110 denotes a housing as a connector main body in the male connector C. The housing 110 has a cross-sectional shape in a length direction (a direction perpendicular to the paper surface of FIG. 9) by an insulator, and is a counterpart printed wiring board D. Is formed in a convex shape toward the center of the conductor P. Fall Concave formed Fall It can be fitted to the part. The length of the housing 110 is arbitrarily determined according to the number of contacts arranged in parallel. The housing 110 has a recess into which the conductor P is inserted and removed. Fall The receiving part 112 which is a part is formed. The receiving portion 112 is formed by making both side walls in the width direction (up and down direction in FIG. 9) into a plane perpendicular to the printed wiring board B on the front end side in the height direction of the housing 110 (left and right direction in FIG. 9). The conductor P can be inserted toward the printed wiring board B and removed in a direction away from the printed wiring board B.
[0027]
The housing 110 has a support wall 113 extending from the receiving portion 112 in a direction intersecting the moving direction of the conductor P, and a housing communicating with the receiving portion 112 at the back of the support wall 113 in the conductor insertion direction. Part 114 is provided. In this embodiment, the receiving part 112 and the storage part 114 are formed to face each other vertically. Each storage unit 114 is provided with a contact 120. The contact 120 is formed by bending a conductive belt-like plate exemplified by a phosphor blue body plate.
[0028]
As shown in FIG. 10, the contact 120 includes a contact portion 121, a bending portion 122, a fixing portion 123, and a connection portion 124 in order from the receiving portion side, that is, in a direction away from the receiving portion 112. It is formed in a series. The contact portion 121 extends from the front side in the conductor insertion direction in the storage portion 114 toward the back side, and the front portion 121a is accommodated in the storage portion 114, and the back portion 121b exits the receiving portion 112 and then toward the storage portion 114. Inverted.
[0029]
The curved portion 122 is connected to the back portion 121b of the contact portion 121, the midway portion 122a is curved toward the front, and a gap t is formed in the conductor moving direction with the support wall 113 of the storage portion 114. Have.
[0030]
The fixing portion 123 is fixed to the housing 110 by press fitting, welding, or the like. The connecting portion 124 is led out of the housing 110 and can be soldered to the printed wiring board B.
[0031]
When the conductor P is fitted to the male connector C, the peripheral wall of the conductor P is inserted into the receiving portion 112 of the male connector C together with the contact p attached to the inside. Then, the peripheral wall of the conductor object P hits the back part 121b of the contact part 121, and the contact part 121 is pressed in the direction in which the conductor object is inserted and away from the receiving part 112. In that case, since the bending portion 122 is compressed and the angle G at the center of the bending portion is reduced, the back portion 121b of the contact portion 121 is accommodated in the storage portion 114, and almost the entire contact portion 121 is connected to the receiving portion 112 of the storage portion 114. Located on the boundary surface 114a. Therefore, the contact part 121 comes into contact with the conductor object P over the entire surface, and the contact pressure received by the conductor object P from the contact part 121 when the conductor object is inserted is appropriately suppressed, and the force required for inserting the conductor object P is reduced. . On the other hand, when the conductor P is removed from the receiving portion 112, the contact portion 121 is dragged in the conductor removal direction. In that case, the front portion 121a of the contact portion 121 hits the support wall 113 of the storage portion 114, and the back portion 121b of the contact portion 121 rises toward the receiving portion 112 with this point as a fulcrum, and the conductor is almost in a state close to point contact. Since it strongly presses against P, the force required to remove the conductor P increases, and the holding force of the conductor P in the male connector C increases. Therefore, it is possible to achieve both improvement in handling at the time of inserting the conductor and reliability improvement of the male connector C by strengthening the holding power of the conductor. In addition, since no locking mechanism or the like is provided, the cost of the male connector C is reduced, and compactness is achieved.
[0032]
Also in the second embodiment, as described in the first embodiment, when the processing direction is selected so that the front portion 121a of the contact portion 121 flows and sharpens in the conductor removal direction, the conductor P is removed from the receiving portion 112. Since the front portion 121a of the pointed contact portion 121 firmly bites into the support wall 113 of the storage portion 114 when it is extracted, the function as a fulcrum is sufficiently performed and the conductor portion P of the back portion 121b of the contact portion 121 is connected to the conductor P. The pressing force is increased, the force required to remove the conductor P is further increased, and the holding force of the conductor P in the male connector C is further increased.
[0033]
Furthermore, as shown in FIG. 11, when the support wall 113 is provided with a protrusion 116 that receives the front portion 121 a of the contact portion 121 in the contact 120, when the conductor P is removed from the receiving portion 112, Since the front portion 121a is received by the projection 116, the pressing force of the back portion 121b of the contact portion 121 against the conductor P becomes stronger, and the force required to remove the conductor P is further increased, and the conductor P in the male connector C is increased. The holding power is further increased.
[0034]
The present invention is not limited to the second embodiment. Contrary to the second embodiment, the male connector C may be a concave female connector, and the conductor P to be combined may be a convex male connector. Moreover, although the shape etc. of the housing were specified, this invention is applicable regardless of a shape, if it is a male-female connector fitted and connected between connectors. In the second embodiment, the storage portion 114 is formed so as to be opposed to each other up and down, the contact 120 is disposed, and the storage portion 114 and the plurality of contacts 120 are provided in parallel, but one storage portion and one contact are provided. In some cases, the arrangement is arbitrary. Furthermore, although the male connector C used for the board-to-board connection is illustrated in the second embodiment, a male / female connector for other applications may be used.
[0035]
FIG. 12 shows a third embodiment of the low insertion force / high removal force connector of the present invention. The connector C is a female connector such as a socket having a cylindrical portion and a receptacle. Therefore, in this embodiment, the conductor P is a male connector such as a pin, tab or post. A harness is connected to the connector C and the conductor P by crimping or the like, and the harnesses are connected to each other by fitting the connector C and the conductor P. In general, the connector C and the conductor P are each accommodated in an insulating housing, and are connected by fitting of the housing.
[0036]
12 and 13, reference numeral 210 denotes a cylindrical portion as a connector body in the connector C, which is formed of a conductor, and a conductor object P is inserted from an opening at the front end. Further, a barrel 211 is formed at the rear end of the cylindrical portion 210 to be crimped to the harness B and the core wire T by being bent inward.
[0037]
A receiving portion 212 into which the conductor P is inserted and removed is formed inside the cylindrical portion 210. The receiving portion 212 is a passage that starts from the opening at the top of the front end and extends rearward along the upper wall. The conductor P can be inserted rearward and removed forward. Yes.
[0038]
The cylindrical portion 210 has a support wall 213 extending from the receiving portion 212 in a direction intersecting the moving direction of the conductor P, and is located at the back of the support wall 213 in the conductor insertion direction and communicates with the receiving portion 212. And a storage portion 214 that is provided. A contact 220 is disposed in the storage portion 214 and is fixed to the cylindrical portion 210. This contact 220 is formed in series with, for example, the cylindrical portion 210, and is punched out in a developed shape from, for example, a plate material, and the cylindrical portion 210 and the contact 220 are formed by bending each portion. Reference numeral 215 denotes a back wall formed in the back of the storage portion 214 in the conductor insertion direction, and whether or not the back wall 215 is provided is an arbitrary matter.
[0039]
As shown in FIG. 14, the contact 220 includes a contact portion 221, a bending portion 222, and a fixing portion 223 in order from the receiving portion side, that is, in a direction away from the receiving portion 212, and these are formed in series. . The contact portion 221 extends from the front side in the conductor insertion direction of the storage portion 214 toward the back side, and the front portion 221a is accommodated in the storage portion 214, and the back portion 221b goes out to the receiving portion 212 and then toward the storage portion 214. The back portion 221b is spaced from the back wall 215 in the direction of movement of the conductor object t. ₁ have.
[0040]
The curved portion 222 is connected to the back portion 221b of the contact portion 221, and the midway portion 222a is curved toward the front, and a gap t is formed between the support wall 213 of the storage portion 214 in the conductor moving direction. ₂ have. The fixing portion 223 is integrally fixed to the cylindrical portion 210.
[0041]
When the harness B is crimped to the barrel 211 of the connector C and the conductor P is inserted into the receiving part 212, the conductor P hits the inner part 221b of the contact part 221, and the contact part 221 is in the conductor insertion direction and the receiving part 212. It is pressed away from the direction. In this case, since the bending portion 222 is compressed and the angle G at the center of the bending portion is reduced, the back portion 221b of the contact portion 221 is accommodated in the storage portion 214, and almost the entire contact portion 221 is connected to the receiving portion 212 of the storage portion 214. Located on the boundary surface 214a. Therefore, the contact portion 221 comes into contact with the conductor P over the entire surface, and the contact pressure received by the conductor P from the contact portion 221 when the conductor is inserted is appropriately suppressed, and the force required to insert the conductor P is reduced. . On the other hand, when the conductor P is removed from the receiving portion 212, the contact portion 221 is dragged in the conductor removal direction. In that case, the front portion 221a of the contact portion 221 hits the support wall 213 of the storage portion 214, and the back portion 221b of the contact portion 221 rises toward the receiving portion 212 with this point as a fulcrum, and the conductor object is in a state almost close to point contact. Since it strongly presses against P, the force required to remove the conductor P increases, and the holding force of the conductor P in the connector C increases. Therefore, it is possible to achieve both improvement in handling at the time of inserting the conductor and reliability improvement of the connector C by strengthening the holding power of the conductor. In addition, since no locking mechanism or the like is provided, the cost of the connector C is reduced, and compactness is achieved.
[0042]
Also in the third embodiment, as described in the first embodiment, when the processing direction is selected so that the front portion 221a of the contact portion 221 flows and sharpens in the conductor removal direction, the conductor P is removed from the receiving portion 212. Since the front portion 221a of the pointed contact portion 221 firmly clings to the support wall 213 of the storage portion 214 when it is extracted, the function as a fulcrum is sufficiently achieved and the conductor portion P of the back portion 221b of the contact portion 221 is connected to the conductor P. The pressing force is increased, the force required to remove the conductor P is further increased, and the holding force of the conductor P in the connector C is further increased.
[0043]
Furthermore, as shown in FIG. 15, when the support wall 213 is provided with a protrusion 216 that receives the front portion 221 a of the contact portion 221 in the contact 220, when the conductor P is removed from the receiving portion 212, Since the front portion 221a is received by the protrusion 216, the pressing force to the conductor P of the back portion 221b of the contact portion 221 is increased, and the force required to remove the conductor P is further increased. Holding power is further increased.
[0044]
The present invention is not limited to the third embodiment. In the second embodiment, the receiving part 212 is formed at the upper part of the cylindrical part 210, but it may be formed at the lower part. At that time, the contact is fixed to the upper wall of the cylindrical portion. In addition, this invention includes embodiment which combined the characteristic of each above embodiment variously.
[0045]
【The invention's effect】
As described above, the low insertion force / high removal force connector according to the first aspect is such that the contact is lightly pressed down when the conductor is inserted, and the contact strongly presses the conductor when the conductor is removed. The force required for removing the conductor can be increased while reducing the force required to improve the handleability when inserting the conductor in the connector and the reliability of the connector can be improved by strengthening the holding force. And since this effect was implement | achieved without providing a locking mechanism etc., the cost reduction and compactization of a connector can be achieved.
[0046]
The low insertion force / high removal force connector according to claim 2 is optimum for obtaining the effect of claim 1 when applied to a card edge type connector and a male / female connector that is connected by fitting between the connectors.
[0047]
The low insertion force / high removal force connector according to claim 3 is applied to a socket having a cylindrical portion into which a male connector such as a pin, tab or post is fitted, a female connector such as a receptacle, or the like. Is the best to get.
[0048]
According to the fourth aspect, the holding force of the conductor in the connector can be further increased, and the reliability of the connector can be further improved.
[Brief description of the drawings]
1A and 1B show a card edge type connector according to a first embodiment of the present invention, in which FIG. 1A is a front view as viewed from a conductor insertion side, and FIG.
FIG. 2 is a perspective view showing the connector, a drum head of a video deck to which the connector is attached, and an FPC in a reduced scale.
FIG. 3 is an enlarged view showing a cross section taken along the line AA in FIG.
4A and 4B show a contact of the connector, wherein FIG. 4A is a front view seen from the side where a conductor is inserted, and FIG.
FIG. 5 is a view for sequentially explaining deformation of a contact when a conductor is inserted by the connector.
FIGS. 6A and 6B are diagrams for sequentially explaining contact deformation when a conductor is removed by the connector. FIGS.
FIG. 7 is an enlarged view showing a front portion of a contact portion of the contact of the connector.
FIG. 8 is a view corresponding to FIG. 6 in a modification of the first embodiment.
FIG. 9 is a cross-sectional view showing a state in which a conductor is fitted to the connector according to the second embodiment.
10 is an enlarged view showing a main part of FIG. 9 in a state where a conductor is removed. FIG.
FIG. 11 is a view corresponding to FIG. 10 showing a modification of the second embodiment.
FIG. 12 is a perspective view showing a connector according to a third embodiment.
FIG. 13 is an enlarged longitudinal sectional view of the connector.
14 is an enlarged view showing a main part of FIG.
FIG. 15 is a view corresponding to FIG. 11 showing a modification of the third embodiment.
FIG. 16 is a cross-sectional view showing a conventional example.
[Explanation of symbols]
C Card edge type connector
10 Housing
12 acceptance department
13 Support wall
14 Storage section
14a Interface
16 protrusion
20 contacts
21 Contact area
21a Front part
21b back part
22 Curved part
22a Midway part
23 Fixed part
24 connections
P conductor (printed wiring board)
C Male connector
110 Housing
112 Reception Department
113 Support wall
114 storage
114a interface
116 protrusion
120 contacts
121 Contact area
121a Front part
121b back part
122 Curved part
122a Midway part
123 fixed part
124 connections
P conductor (female connector)
p contact
C female connector
210 Cylindrical part
212 Reception Department
213 Support wall
214 storage
214a Interface
216 protrusion
220 contacts
221 contact area
221a Front part
221b back part
222 Curved part
222a Midway part
223 fixed part
P Conductor (male connector)

Claims

In a connector having a contact that contacts an inserted conductor from a direction crossing the insertion direction,
The connector body includes a receiving portion in which the conductor material is inserted and removed, and the support wall extending in a direction crossing the moving direction of the conductor material from the receiving section, housed, located at the back of the conductor material insertion direction of the support wall And a contact is disposed in the storage portion,
The contacts extend in order from the receiving portion side toward the back from the front side in the conductor insertion direction in the storage portion, the front portion fits in the storage portion, and the back portion exits the receiving portion and then reverses toward the storage portion. A contact portion, a curved portion that is connected to the inner portion of the contact portion and has a midway portion curved toward the front of the conductor insertion direction and having a gap in the conductor movement direction between the support wall and the connector; A fixing part fixed to the main body ,
When the conductor is inserted into the receiving part, the conductor hits the back part of the contact part, the curved part is compressed, the back part fits in the storage part, and almost the whole contact part is When the contact portion is located on the boundary surface with the receiving portion of the storage portion and contacts the conductor on the entire surface, and the conductor is removed from the receiving portion, the contact portion is dragged in the conductor removal direction and the contact portion is pulled out. Low insertion that is configured so that the front portion hits the support wall of the storage portion, the back portion of the contact portion rises toward the receiving portion with this point as a fulcrum, and almost contacts the conductor in a state close to point contact Force / High removal force connector.

2. The low insertion force / high removal force connector according to claim 1, wherein the connector main body is a housing made of an insulator, and the contact is further provided with a connection portion connected to the fixed portion and led out of the housing. Low insertion force / high removal force connector.

The low insertion force / high removal force connector according to claim 1, wherein the connector body is a cylindrical portion made of a conductor.

The low insertion force / high removal force connector according to any one of claims 1 to 3, wherein the support wall is provided with a protrusion for receiving a front portion of the contact portion of the contact.