JP3935119B2 - Inspection pin for wire harness inspection jig and inspection jig for wire harness - Google Patents

Inspection pin for wire harness inspection jig and inspection jig for wire harness Download PDF

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Publication number
JP3935119B2
JP3935119B2 JP2003201316A JP2003201316A JP3935119B2 JP 3935119 B2 JP3935119 B2 JP 3935119B2 JP 2003201316 A JP2003201316 A JP 2003201316A JP 2003201316 A JP2003201316 A JP 2003201316A JP 3935119 B2 JP3935119 B2 JP 3935119B2
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terminal
inspection
contact
connector housing
wire harness
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JP2005044567A (en
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寛 長谷川
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Yazaki Corp
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Yazaki Corp
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  • Manufacturing Of Electrical Connectors (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、ワイヤハーネスに導通検査を施す際に、該ワイヤハーネスの端子との導通を確保するワイヤハーネス用検査治具の検査ピン及びワイヤハーネス用検査治具に関する。
【0002】
【従来の技術】
複数の電線と、これらの電線の端部それぞれに接続された端子を収容するコネクタと、を備えたワイヤハーネスは、前記端子それぞれについて、他の端子との導通の有無をチェックすることによって、良否が判定されてきた。
【0003】
従来この種のワイヤハーネスの検査方法は、以下に示す手順に沿って行われてきた。ワイヤハーネスの端子のうち一つの端子を選択して、この選択した端子に印加して、他の端子の電位の高・低を判定する。全ての端子に順番に印加して、それぞれの場合の印加した端子以外の全ての端子の電位を順番に判定する。そして、全ての端子の相互の導通状況を把握する。
【0004】
前述したように把握した端子相互の導通状況と、前記ワイヤハーネスが正常である場合の端子相互の導通状況と、を対比することによって、前記ワイヤハーネスの良否、及び異常がある場合には異常箇所を把握してきた。
【0005】
前述したようにワイヤハーネスを検査するために、従来から前記コネクタを保持する検査治具(例えば、特許文献1参照。)を用いてきた。この種の検査治具は、前記コネクタを保持するコネクタ受け部と、レバーなどにより前記コネクタ受け部に接離自在に設けられた検査部と、前記検査部に取り付けられかつ検査部が前記コネクタ受け部に近づくと前記端子と導通する検査ピンとを備えている。
【0006】
検査ピンは、前記検査部などに取り付けられる本体部と、前記本体部から突没自在に設けられかつ前記本体部から突出する方向に付勢されているとともに前記端子と接触して導通する導通接触部とを備えている。前述した検査治具は、コネクタ受け部にコネクタを保持し、レバーにより検査部をコネクタ受け部に近づけて、前記端子と検査ピンとを導通させることで、各端子同士の導通状況の良否を判定してきた。
【0007】
【特許文献1】
特開平11−344523号公報
【0008】
【発明が解決しようとする課題】
コネクタハウジングと端子のうち一方には、他方に係止する係止アームなどを備えている。係止アームが他方に係止することで、端子がコネクタハウジングの所定の位置に位置付けられる。
【0009】
前述したコネクタは、一つのコネクタハウジングに多数の端子を収容することが多い。このため、コネクタハウジングのそりや各端子の公差などにより、各端子の先端部の前記導通接触部が前記本体部から突出する方向の位置がばらつくことが多い。このため、前述した検査ピンでは、前記本体部からの検査部の突没量を大きくして、各検査ピンの検査部を確実に各端子の先端部に接触できるようにしている。
【0010】
一方、前述した自動車には、より多種多様な電子機器が搭載されるようになり、前述したワイヤハーネスを構成する電線が増加する傾向であった。このため、勿論、コネクタハウジング内に収容される端子も増加する傾向であるとともに、ワイヤハーネスなどの軽量化の為に前述したコネクタ即ち端子を小型化する傾向であった。このため、前述した係止アームが確実に係止せずに、端子がコネクタハウジングの所定の位置に位置付けられない場合に、端子の先端部とコネクタハウジングの端面との距離が所望の距離より若干大きくなったり小さくなることである。係止アームが確実に係止していない状態を、端子がコネクタハウジング内に不完全挿入されているという。
【0011】
前述した従来の検査ピンでは、前述した本体部に対する導通接触部の突没量が前述した公差により定められている。このため、前述した係止アームが確実に係止せずに、端子がコネクタハウジングの所定の位置に位置付けられない場合にも、検査ピンが端子の先端部に接触して、検査対象物のコネクタ即ちワイヤハーネスを良品と判定してしまう虞があった。このように、従来の検査ピン及び該検査ピンを備えた検査治具では、端子のコネクタハウジングへの不完全挿入を検知することが困難であった。
【0012】
したがって、本発明の目的は、端子の不完全挿入を確実に検知できるワイヤハーネス用検査治具の検査ピン及びワイヤハーネス用検査治具を提供することにある。
【0013】
【課題を解決するための手段】
前記課題を解決し目的を達成するために、請求項1に記載の本発明のワイヤハーネス用検査治具の検査ピンは、コネクタハウジング内に収容された端子を備えたワイヤハーネスに導通検査を行うために用いられるワイヤハーネス用検査治具の検査ピンであって、前記端子の先端部は、前記コネクタハウジングの端面から該コネクタハウジングの外側に突出しており、前記ワイヤハーネス用検査治具に取り付けられる本体部と、前記コネクタハウジングの端面と相対し、前記本体部に突没自在に支持されかつ前記本体部から突出する方向に付勢されているとともに前記端子の先端部に接触して前記端子と導通する導通接触部と、管状に形成されて前記導通接触部の外周に設けられ、かつ内側に前記導通接触部を配しているとともに前記導通接触部より前記コネクタハウジングの端面に向かって突出して形成されて、内側に前記端子が侵入することを許容する端面接触部と、を備え、前記端面接触部は、前記端子の先端部と前記コネクタハウジングの前記導通接触部に相対する端面との距離が予め定められる所望の距離以上であると前記端面と間隔をあけて前記導通接触部が内側に侵入した前記端子の先端部に接触することを許容するとともに、前記端子の先端部と前記コネクタハウジングの前記導通接触部に相対する端面との距離が予め定められる所望の距離未満であると前記端面と接触して前記導通接触部が内側に侵入した前記端子の先端部と接触することを規制することを特徴としている。
【0015】
請求項2に記載の本発明のワイヤハーネス用検査治具の検査ピンは、請求項記載のワイヤハーネス用検査治具の検査ピンにおいて、前記端面接触部の前記導通接触部からの突出量は、前記所望の距離以下であることを特徴としている。
【0019】
請求項3に記載の本発明のワイヤハーネス用検査治具は、コネクタハウジング内に収容された端子を備えたワイヤハーネスに導通検査を行うために用いられるワイヤハーネス用検査治具であって、前記コネクタハウジングを取り付けるコネクタ受け部と、前記コネクタ受け部と相対的に接離自在に設けられた検査部と、前記検査部に取り付けられかつ前記コネクタハウジング内の端子と導通可能な請求項1又は請求項2に記載のワイヤハーネス用検査治具の検査ピンとを備え、前記コネクタ受け部に前記端子を収容したコネクタハウジングを取り付け、前記検査部とコネクタ受け部とを近づけて、前記ワイヤハーネス用検査治具の検査ピンと前記端子とを導通させてワイヤハーネスに導通検査を行うことを特徴としている。
【0020】
請求項1に記載した本発明のワイヤハーネス用検査治具の検査ピンによれば、端面接触部がコネクタハウジングの端面に接触するか否かで、導通接触部を端子と絶縁したり導通させる。このため、不完全挿入時に、端子の先端部の端面からの突出量が所望の距離を下回ると、端面接触部がコネクタハウジングの端面と接触して導通接触部が端子の先端部と接触しない。
【0021】
また、端子の先端部とコネクタハウジングの端面との距離が所望の距離以上であるか否かを検査する。このため、導通接触部の本体部から突没する量を端子の先端部とコネクタハウジングの端面との距離の公差のみに基づいて設定できる。
【0022】
なお、本明細書でいう所望の距離とは、設計時に定められて、係止アームが係止して端子がコネクタハウジングの所定の位置に位置付けられた時の端子の先端部とコネクタハウジングの端面との距離である。即ち、所望の距離とは、設計時に定められる端子がコネクタハウジング内に完全挿入された時の前述した距離である。
【0023】
面接触部が管状でかつ導通接触部よりコネクタハウジングの端面に向かって突出している。このため、端面接触部は、端子の先端部とコネクタハウジングの端面との距離が所望の距離を下回ると、確実にコネクタハウジングの端面に接触する。
【0024】
請求項2に記載した本発明のワイヤハーネス用検査治具の検査ピンによれば、端面接触部の導通接触部からの突出量が所望の距離以下である。
【0029】
請求項3に記載した本発明のワイヤハーネス用検査治具によれば、検査ピンの端面接触部がコネクタハウジングの端面に接触するか否かで、導通接触部を端子と絶縁したり導通させる。このため、検査ピンが端子と絶縁するか導通するかで、端子が不完全挿入であるか否かを検知できる。
【0030】
また、端子の先端部とコネクタハウジングの端面との距離が所望の距離以上又は以下であるか否かを検査する。このため、導通接触部の本体部から突没する量を端子の先端部とコネクタハウジングの端面との距離の公差のみに基づいて設定できる。
【0031】
【発明の実施の形態】
以下、本発明の第1の実施形態にかかるワイヤハーネス用検査治具の検査ピン(以下、単に検査ピンと呼ぶ)及びワイヤハーネス用検査治具を図1ないし図8を参照して説明する。図3などに示された検査ピン1は、図1に示すワイヤハーネス用検査治具(以下単に検査治具と呼ぶ)2を構成している。検査治具2は、ワイヤハーネス3に導通検査を施す際に用いられる。ワイヤハーネス3は、図1に示すように、複数の電線4と、複数のコネクタ5(図1中には一つのみ示す)と、を備えている。
【0032】
電線4は、導電性の芯線と、該芯線を被覆する絶縁性の被覆部と、を備えた所謂被覆電線である。コネクタ5は、図2及び図3に示すように、端子としての雄型の端子(以下、単に雄端子と呼ぶ)6(図4に示す)と、コネクタハウジング7と、を備えている。
【0033】
雄端子6は、導電性の板金などが折り曲げられて得られる。雄端子6は、電線接続部30と、電気接触部としてのタブ31とを一体に備えている。電線接続部30は、電線4の端部などに取りつけられて、前記芯線即ち電線4と電気的に接続する。タブ31は、板状に形成されている。タブ31の電線接続部30から離れた側の端部(以下先端部と呼ぶ)31aは、本明細書に記した雄端子6の先端部をなしている。
【0034】
コネクタハウジング7は、絶縁性の合成樹脂からなり、かつ箱状に形成されている。コネクタハウジング7は、図2及び図3に示すように、端子収容室8を複数備えている。端子収容室8は、前記雄端子6を収容する。各端子収容室8には、係止アーム32が設けられている。係止アーム32は、雄端子6に係止する。
【0035】
また、端子収容室8は、コネクタハウジング7即ちコネクタ5が検査治具2の後述のコネクタ受け部12に取り付けられると、後述の検査部13に取り付けられた検査ピン1に相対するコネクタハウジング7の外壁33を貫通している。この外壁33の検査ピン1の後述の導通接触部22に相対する表面33aは、本明細書に記した端面なしている。
【0036】
各端子収容室8は、外壁33の表面33aからタブ31が検査ピン1に向かって(即ち、コネクタハウジング7の外側に)突出した状態で、雄端子6を収容する。そして、係止アーム32が雄端子6に係止することで、端子収容室8は、雄端子6が抜け出ることを防止する。このとき、タブ31は、外壁33の表面33aから距離L1突出している。距離L1は、本明細書に記した所望の距離をなしている。
【0037】
距離L1は、係止アーム32が雄端子6に係止した状態即ち雄端子6がコネクタハウジング7の正規の位置に収容された時の雄端子6のタブ31の先端部31aとコネクタハウジング7の検査ピン1の後述の導通接触部22に相対する表面33aとの距離をなしている。
【0038】
このため、距離L1は、コネクタ5などの設計時に定められて、係止アーム32が係止して雄端子6がコネクタハウジング7の所定の位置に位置付けられた時即ち完全挿入された時の雄端子6のタブ31の先端部31aとコネクタハウジング7の表面33aとの距離である。完全挿入とは、係止アーム32が雄端子6に係止した状態を示している。また、端子収容室8内に収容された雄端子6に係止アーム32が係止していない状態を、不完全挿入と呼ぶ。不完全挿入時には、雄端子6のタブ31の先端部31aとコネクタハウジング7の表面33aとの距離は、前記距離L1より小さくなる。
【0039】
ワイヤハーネス3は、電線4の端部などに雄端子6が取り付けられ、該雄端子6がコネクタハウジング7内に収容されて得られる。このような構成のワイヤハーネス3は、自動車に配索される。ワイヤハーネス3のコネクタ5は、前記自動車に搭載される電子機器のコネクタにコネクタ結合する。ワイヤハーネス3は、バッテリなどの電源からの電力や、制御装置などからの制御信号を、前記電子機器に伝える。
【0040】
検査治具2は、図1に示すように、台などの上に設置される基部10と、操作レバー11と、コネクタ受け部12と、検査部13と、を備えている。基部10は、互いに平行な一対の側壁14などを備えている。操作レバー11と、コネクタ受け部12と、検査部13とは、前記一対の側壁14間に設けられている。
【0041】
操作レバー11は、前記側壁14の一端部に矢印Kに沿って回転自在に支持されている。コネクタ受け部12は、前記側壁14の他端部に設けられている。コネクタ受け部12は、端子収容室8の開口部即ち前述した表面33aが、前記操作レバー11即ち検査部13に相対する状態で、前記コネクタ5を保持する。図示例では、コネクタ受け部12には、鉛直方向に沿ってコネクタ5が出し入れ自在となっている。
【0042】
検査部13は、側壁14の中央部に設けられている。検査部13は、図2及び図3に示すように、検査部本体15と、複数の検査ピン1と、を備えている。検査部本体15は、方体状に形成されている。検査部本体15は、コネクタ受け部12に近づいたり離れたりする方向にスライド自在に、一対の側壁14間に配されている。即ち、検査部本体15は、矢印Sに沿ってコネクタ受け部12に接離自在に、一対の側壁14間に配されている。なお、接離とは、互いに近づいたり離れることである。検査部本体15は、リンク17により操作レバー11と連結されており、操作レバー11が矢印Kに沿って回動するのに連動して、矢印Sに沿ってスライドする。
【0043】
検査ピン1は、検査部本体15内に埋設されている(取り付けられている)。検査ピン1は、コネクタ受け部12に保持されるコネクタ5の端子収容室8と同数設けられている。検査ピン1は、後述する導通接触部22が前記検査部本体15からコネクタ受け部12に向かって突出している。導通接触部22は、コネクタ受け部12に相対している。即ち、導通接触部22は、コネクタハウジング7の表面33aに相対する。また、検査ピン1は、導通接触部22の後述する接触面22aが、前記端子収容室8即ち雄端子6のタブ31の先端部31aに相対する。
【0044】
検査ピン1は、図2ないし図5に示すように、円管状の本体部20と、導電性の導通ピン21(図5に示す)と、導電性の導通接触部22と、基部キャップ24(図5に示す)と、付勢手段としての導電性のコイルばね23(図5に示す)と、端面接触部としての接触キャップ25を備えている。本体部20は、図2及び図3に示すように、検査治具2の検査部本体15に取り付けられる。
【0045】
本体部20の中央部には、段部26が設けられている。段部26は、本体部20の内径を段階的に変化させている。段部26よりコネクタ受け部12寄りの内径は、段部26よりコネクタ受け部12から離れた側の内径より小さくなっている。
【0046】
導通ピン21は、金属などからなり、円柱状のピン本体27と、このピン本体27の中央部に設けられた太部28とを備えている。ピン本体27の外径は、本体部20の段部26よりコネクタ受け部12寄りの内径と等しい。太部28は、全周に亘ってピン本体27から外周方向に突出している、太部28とピン本体27とは互いに同軸に配されている。太部28の外径は、本体部20の段部26よりコネクタ受け部12から離れた側の内径と等しい。導通ピン21は、本体部20内に、該本体部20の長手方向にスライド自在に収容される。
【0047】
導通ピン21が本体部20内に収容されると、太部28は、段部26と当接する。ピン本体27のコネクタ受け部12寄りの端部の外周には、ねじ溝が形成されており、ピン本体27のコネクタ受け部12から離れた側の端部には、電線16が取り付けられている。電線16は、図示しないコンピュータなどに接続している。
【0048】
導通接触部22は、円柱状に形成されており、前述したねじ溝に螺合して、ピン本体27即ち導通ピン21に取り付けられる。導通接触部22は、ピン本体27に取り付けられると、該ピン本体27と同軸になる。導通接触部22は、ピン本体27に取り付けられることで、その軸芯に沿ってスライド自在に、前記本体部20に取り付けられている。即ち、導通接触部22は、本体部20に突没自在に支持されている。
【0049】
また、太部28と段部26によって、導通接触部22は、本体部20内から抜け出ない。導通接触部22のコネクタ受け部12即ちこのコネクタ受け部12に取り付けられるコネクタ5の雄端子6のタブ31の先端部31aに相対する端面(以下接触面と記す)22aは、前記導通接触部22の軸芯及び前述した矢印Sに直交する方向に沿って平坦に形成されている。
【0050】
基部キャップ24は、本体部20のコネクタ受け部12から離れた側の端部に取り付けられる。基部キャップ24は、導通ピン21の外周に嵌合するとともに本体部20の内周に嵌合する。基部キャップ24は、導通ピン21と本体部20とを互いに同軸に保つ。
【0051】
コイルばね23は、本体部20内に収容されており、内側に導通ピン21を通しているとともに、基部キャップ24と太部28との間に設けられている。コイルばね23は、太部28即ち導通接触部22を本体部20から突出する方向に付勢している。即ち、コイルばね23は、導通接触部22をコネクタ受け部12に取り付けられたコネクタ5の雄端子6のタブ31の先端部31aに向かって付勢する。
【0052】
接触キャップ25は、例えば、ポリエーテルエーテルケトン(Polyetheretherketone:PEEK)などの合成樹脂からなり円筒状に形成されている。接触キャップ25は、図8に示すように、導通接触部22のコネクタ受け部12寄りの先端部の外周に係合している。このため、接触キャップ25は導通接触部22の接触面22aの外周に設けられる。即ち、接触キャップ25は、内側に導通接触部22を配している。接触キャップ25と導通接触部22などとは互いに同軸になる。また、接触キャップ25は、導通接触部22の接触面22aよりコネクタ受け部12に向かって突出している。
【0053】
接触キャップ25の接触面22aの導通接触部22からのコネクタ受け部12に向かって突出する突出量T1は、前述した距離L1より若干小さい。距離L1と突出量T1との差は、雄端子6が前述した完全挿入であるか不完全挿入であるかを判定できる値であるのが望ましい。即ち、突出量T1は、距離L1以下である。
【0054】
このため、雄端子6が完全挿入であると、検査部13をコネクタ受け部12に近づけると、接触キャップ25はコネクタ5の表面33aに接触せずに、図6に示すように、導通接触部22の接触面22aに雄端子6のタブ31の先端部31aが接触する。このため、雄端子6が完全挿入であると、接触キャップ25は導通接触部22の接触面22aに雄端子6のタブ31の先端部31aが接触することを許容する。このため、接触キャップ25は、雄端子6のタブ31の先端部31aとコネクタハウジング7の表面33aとの距離が予め定められる所望の距離L1以上であると、導通接触部22が雄端子6のタブ31の先端部31aに接触することを許容する。
【0055】
雄端子6が不完全挿入であると、検査部13をコネクタ受け部12に近づけると、接触キャップ25はコネクタ5の表面33aに接触して、図7に示すように、導通接触部22の接触面22aに雄端子6のタブ31の先端部31aが接触しない。このため、雄端子6が不完全挿入であると、接触キャップ25は導通接触部22の接触面22aに雄端子6のタブ31の先端部31aが接触することを規制する。このため、接触キャップ25は、雄端子6のタブ31の先端部31aとコネクタハウジング7の表面33aとの距離が予め定められる所望の距離L1未満であると前記表面33aと接触して、導通接触部22が雄端子6のタブ31の先端部31aと接触することを規制する。
【0056】
前述した構成の検査ピン1を備えた検査治具2を用いて、ワイヤハーネス3に導通検査を施す際には、まず、コネクタ受け部12から検査部13を離しておき、検査治具2のコネクタ受け部12にコネクタ5を取り付ける(保持する)。操作レバー11を矢印Kに沿って回転して、検査部13を矢印Sに沿ってコネクタ受け部12即ちコネクタ5に近づける。
【0057】
すると、前記導通接触部22がコイルばね23によって付勢されているため、雄端子6が完全挿入であると、図6に示すように、導通接触部22の接触面22aとコネクタ5の雄端子6のタブ31の先端部31aとが互いに接触する。また、雄端子6が不完全挿入であると、図7に示すように、導通接触部22の接触面22aとコネクタ5の雄端子6のタブ31の先端部31aとが互いに接触しない。
【0058】
前述したコンピュータなどが、前記電線16や検査ピン1を介して、前記雄端子6に順番に印加する。コンピュータが、雄端子6相互の導通状況を把握する。把握した導通状況と、良品の場合の導通状況とを比較して、雄端子6が完全挿入であるか不完全挿入であるかなどのワイヤハーネス3の良否を判定する。
【0059】
本実施形態によれば、接触キャップ25がコネクタハウジング7の表面33aに接触するか否かで、導通接触部22を雄端子6と絶縁したり導通させる。このため、不完全挿入時に、雄端子6のタブ31の先端部31aの表面33aからの突出量が所望の距離L1を下回ると、接触キャップ25がコネクタハウジング7の表面33aと接触して導通接触部22が雄端子6のタブ31の先端部31aと接触しない。
【0060】
また、雄端子6の先端部31aとコネクタハウジング7の表面33aとの距離が所望の距離L1以上であるか否かを検査する。このため、導通接触部22の本体部20から突没する量を雄端子6の先端部31aとコネクタハウジング7の表面33aとの距離の公差のみに基づいて設定できる。このため、導通接触部22が本体部20から突没する量を設定する際に、コネクタハウジング7のそりを考慮する必要がなくなり、コネクタハウジング7のそりを考慮した場合より導通接触部22が本体部20から突没する量を非常に小さくできる。
【0061】
このため、雄端子6の先端部31aと表面33aとの距離が所望の距離L1を下回る不完全挿入時に、導通接触部22が雄端子6の先端部31aと接触することを防止できる。したがって、誤検知を防止でき、雄端子6の不完全挿入を確実に検知できる。
【0062】
接触キャップ25が管状でかつ導通接触部22よりコネクタハウジング7の表面33aに向かって突出している。このため、接触キャップ25は、雄端子6のタブ31の先端部31aとコネクタハウジング7の表面33aとの距離が所望の距離L1を下回ると、確実にコネクタハウジング7の表面33aに接触する。
【0063】
接触キャップ25の導通接触部22の接触面22aからの突出量T1が所望の距離L1より小さい。これにより、接触キャップ25は、雄端子6のタブ31の先端部31aとコネクタハウジング7の表面33aとの距離が所望の距離L1を下回ると、確実にコネクタハウジング7の表面33aに接触する。
【0064】
このように、雄端子6のタブ31の先端部31aのコネクタハウジング7の表面33aからの突出量が所望の距離L1以上であるか否かを確実に検知できる。このため、雄端子6と絶縁するか導通するかで、雄端子6が不完全挿入であるか否かを確実に検知できる。
【0065】
前述した第1の実施形態では、接触キャップ25を円管状に形成し、導通接触部22の接触面22aを平坦に形成している。しかしながら、本発明では、図9に示すように、接触キャップ25のコネクタ受け部12寄りの端部にテーパ面34を設け、接触面22aに複数のテーパ面35,36により凹部37を設けても良い。
【0066】
テーパ面34は、接触キャップ25の内径を、コネクタ受け部12に向かうにしたがって徐々に大きくしている。凹部37は、テーパ面35,36によりコネクタ受け部12に向かうにしたがって徐々に開口が大きくなっている。また、凹部37は、接触面22aの中央部で接触面22aから最も深くなっている。これらのテーパ面34,35,36を設けることで、接触キャップ25内にタブ31を確実に挿入でき、凹部37の底にタブ31を確実に接触させることができる。
【0067】
次に、本発明の開示例にかかる検査ピン1及び検査治具2を図10ないし図15を参照して説明する。なお、前述した第1の実施形態と同一構成部分には、同一符号を付して説明を省略する。
【0068】
開示例では、コネクタ5のコネクタハウジング7内の端子としての雌型の端子(以下、単に雌端子と呼ぶ)40が完全挿入であるか不完全挿入であるかなどのワイヤハーネス3の良否を判定する。即ち、本開示例の検査対象物としてのワイヤハーネス3のコネクタ5は、図10及び図11に示すように、雌端子40を備えている。雌端子40の電気接触部41は、筒状に形成されている。雌端子40が端子収容室8内に収容されると、筒状の電気接触部41は、コネクタハウジング7の表面33aからコネクタハウジング7内に没する。
【0069】
また、完全挿入時には、雌端子40の電気接触部41は、コネクタハウジング7の表面33aから距離L2コネクタハウジング7内に没している。距離L2は、本明細書に記した所望の距離をなしている。距離L2は、係止アーム32が雌端子40に係止した状態即ち雌端子40がコネクタハウジング7の正規の位置に収容された時の雌端子40の電気接触部41の電線接続部30から離れた側の先端部41aとコネクタハウジング7の表面33aとの距離をなしている。なお、先端部41aは、本明細書に記した雌端子40の先端部をなしている。
【0070】
また、不完全挿入時には、雌端子40の電気接触部41の先端部41aとコネクタハウジング7の表面33aとの距離は、前記距離L2より大きくなる。
【0071】
開示例の検査ピン1の導通接触部22は、図12及び図13に示すように、円柱状に形成されており、接触キャップ25は、円管状に形成されかつ導通接触部22の接触面22aの外周に嵌合している。即ち、接触キャップ25は、内側に導通接触部22を配している。接触キャップ25は、導通接触部22の接触面22aよりコネクタ受け部12から離れている。即ち、導通接触部22は、接触キャップ25よりコネクタ受け部12に向かって突出している。導通接触部22の接触面22aと接触キャップ25との距離T2は、前述した距離L2より若干大きい。則ち、距離T2は、距離L2以上である。
【0072】
距離L2と距離T2との差は、雌端子40が前述した完全挿入であるか不完全挿入であるかを判定できる値であるのが望ましい。このため、雌端子40が完全挿入であると、検査部13をコネクタ受け部12に近づけると、接触キャップ25はコネクタ5の表面33aに接触せずに、図14に示すように、導通接触部22の接触面22aに雌端子40の電気接触部41の先端部41aが接触する。このため、雌端子40が完全挿入であると、接触キャップ25は導通接触部22の接触面22aに雌端子40の電気接触部41の先端部41aが接触することを許容する。このため、接触キャップ25は、雌端子40の電気接触部41の先端部41aとコネクタハウジング7の表面33aとの距離が予め定められる所望の距離L2以下であると、導通接触部22の接触面22aが雌端子40の電気接触部41の先端部41aに接触することを許容する。
【0073】
雌端子40が不完全挿入であると、検査部13をコネクタ受け部12に近づけると、接触キャップ25はコネクタ5の表面33aに接触して、図15に示すように、導通接触部22の接触面22aに雌端子40の電気接触部41の先端部41aが接触しない。このため、雌端子40が不完全挿入であると、接触キャップ25は導通接触部22の接触面22aに雌端子40の電気接触部41の先端部41aが接触することを規制する。このため、接触キャップ25は、雌端子40の電気接触部41の先端部41aとコネクタハウジング7の表面33aとの距離が予め定められる所望の距離L2を越えると、前記表面33aと接触して前記導通接触部22の接触面22aが雌端子40の電気接触部41の先端部41aと接触することを規制する。
【0074】
開示例によれば、接触キャップ25がコネクタハウジング7の表面33aに接触するか否かで、導通接触部22を雌端子40と絶縁したり導通させる。このため、不完全挿入時に、雌端子40の電気接触部41の先端部41aの表面33aからの距離が所望の距離L2を上回ると、接触キャップ25がコネクタハウジング7の表面33aと接触して導通接触部22が雌端子40の電気接触部41の先端部41aと接触しない。
【0075】
また、雌端子40の先端部41aとコネクタハウジング7の表面33aとの距離が所望の距離L2以下であるか否かを検査する。このため、導通接触部22の本体部20から突没する量を雌端子40の先端部41aとコネクタハウジング7の表面33aとの距離の公差のみに基づいて設定できる。このため、導通接触部22が本体部20から突没する量を設定する際に、コネクタハウジング7のそりを考慮する必要がなくなり、コネクタハウジング7のそりを考慮した場合より導通接触部22が本体部20から突没する量を非常に小さくできる。
【0076】
このため、雌端子40の先端部41aと表面33aとの距離が所望の距離L2を越える不完全挿入時に、導通接触部22が雌端子40の先端部41aと接触することを防止できる。したがって、誤検知を防止でき、雌端子40の不完全挿入を確実に検知できる。
【0077】
接触キャップ25が管状でかつ導通接触部22よりコネクタハウジング7の表面33aから離れている。このため、接触キャップ25は、雌端子40の電気接触部41の先端部41aとコネクタハウジング7の表面33aとの距離が所望の距離L2を上回ると、確実にコネクタハウジング7の表面33aに接触する。
【0078】
接触キャップ25の導通接触部22の接触面22aからの距離T2が所望の距離L2より大きい。これにより、接触キャップ25は、雌端子40の電気接触部41の先端部41aとコネクタハウジング7の表面33aとの距離が所望の距離L2を上回ると、確実にコネクタハウジング7の表面33aに接触する。
【0079】
このように、雌端子40の電気接触部41の先端部41aのコネクタハウジング7の表面33aからの距離が所望の距離L2以下であるか否かを確実に検知できる。このため、雌端子40と検査ピン1とが絶縁するか導通するかで、雌端子40が不完全挿入であるか否かを確実に検知できる。
【0080】
前述した第1の実施形態及び開示例では、接触キャップ25と導通接触部22とを互いに別体としている。しかしながら、本発明では、接触キャップ25と導通接触部22とを一体にしても良い。この場合、勿論、接触キャップ25と導通接触部22とを金属から構成するのが望ましい。
【0081】
また、前述した実施形態及び開示例では、突出量T1を距離L1より若干小さくし、距離T2を距離L2より若干大きくしている。しかしながら、本発明では、突出量T1を距離L1と等しくし、距離T2を距離L2と等しくしても良い。要するに、本発明では、突出量T1と距離L1との差が雄端子6の不完全挿入を検出できるのであれば、突出量T1を距離L1以下とすれば良い。本発明では、距離T2と距離L2との差が雌端子40の不完全挿入を検出できるのであれば、距離T2を距離L2以上にすれば良い。
【0082】
なお、前述した実施形態は本発明の代表的な形態を示したに過ぎず、本発明は、実施形態に限定されるものではない。即ち、本発明の骨子を逸脱しない範囲で種々変形して実施することができる。
【0083】
【発明の効果】
以上説明したように、請求項1に記載の本発明によれば、不完全挿入時に、端子の先端部の端面からの突出量が所望の距離を下回ると、端面接触部がコネクタハウジングの端面と接触して導通接触部が端子の先端部と接触しない。このように、端子の先端部のコネクタハウジングの端面からの突出量が所望の距離以上であるか否かを確実に検知できる。このため、端子と絶縁するか導通するかで、端子が不完全挿入であるか否かを確実に検知できる。
【0084】
また、導通接触部の本体部から突没する量を端子の先端部とコネクタハウジングの端面との距離の公差のみに基づいて設定できる。このため、導通接触部が本体部から突没する量を設定する際に、コネクタハウジングのそりを考慮する必要がなくなり、コネクタハウジングのそりを考慮した場合より導通接触部が本体部から突没する量を非常に小さくできる。
【0085】
このため、端子の先端部と端面との距離が所望の距離を下回る不完全挿入時に、導通接触部が端子の先端部と接触することを防止できる。したがって、誤検知を防止でき、端子の不完全挿入を確実に検知できる。
【0086】
面接触部は、端子の先端部とコネクタハウジングの端面との距離が所望の距離を下回ると、確実にコネクタハウジングの端面に接触する。このように、端子の先端部のコネクタハウジングの端面からの突出量が所望の距離以上であるか否かを確実に検知できる。このため、端子と絶縁するか導通するかで、端子が不完全挿入であるか否かを確実に検知できる。
【0087】
請求項2に記載の本発明によれば、導通接触部からの突出量が所望の距離以下なので、端面接触部は、端子の先端部とコネクタハウジングの端面との距離が所望の距離を下回ると、確実にコネクタハウジングの端面に接触する。このように、端子の先端部のコネクタハウジングの端面からの突出量が所望の距離以上であるか否かを確実に検知できる。このため、端子と絶縁するか導通するかで、端子が不完全挿入であるか否かを確実に検知できる。
【0093】
請求項3に記載の本発明によれば、検査ピンの端面接触部がコネクタハウジングの端面に接触するか否かで、導通接触部を端子と絶縁したり導通させる。このため、検査ピンが端子と絶縁するか導通するかで、端子が不完全挿入であるか否かを検知できる。
【0094】
また、導通接触部の本体部から突没する量を端子の先端部とコネクタハウジングの端面との距離の公差のみに基づいて設定できる。このため、導通接触部が本体部から突没する量を設定する際に、コネクタハウジングのそりを考慮する必要がなくなり、コネクタハウジングのそりを考慮した場合より導通接触部が本体部から突没する量を非常に小さくできる。
【0095】
このため、端子の先端部と端面との距離が所望の距離を下回る又は越える不完全挿入時に、導通接触部が端子の先端部と接触することを防止できる。したがって、誤検知を防止でき、端子の不完全挿入を確実に検知できる。
【図面の簡単な説明】
【図1】 本発明の第1の実施形態にかかるワイヤハーネス用検査治具を示す斜視図である。
【図2】 図1に示されたワイヤハーネス用検査治具の検査部とコネクタ受け部などを断面で示す平面図である。
【図3】 図2に示された検査部とコネクタ受け部とを互いに近づけた状態を断面で示す平面図である。
【図4】 図1に示されたワイヤハーネス用検査治具の検査ピンを示す平面図である。
【図5】 図4に示されたワイヤハーネス用検査治具の検査ピンを断面にして示す平面図である。
【図6】 図1に示されたワイヤハーネス用検査治具で、雄端子の完全挿入時に検査ピンの導通接触部と雄端子とが接触する状態を示す説明図である。
【図7】 図1に示されたワイヤハーネス用検査治具で、雄端子の不完全挿入時に検査ピンの導通接触部と雄端子とが接触しない状態を示す説明図である。
【図8】 図5に示されたワイヤハーネス用検査治具の検査ピンの導通接触部と接触キャップを断面にして示す平面図である。
【図9】 図8に示されたワイヤハーネス用検査治具の検査ピンの導通接触部と接触キャップの変形例を断面にして示す平面図である。
【図10】 本発明の開示例にかかるワイヤハーネス用検査治具の検査部とコネクタ受け部などを示す断面で示す平面図である。
【図11】 図10に示された検査部とコネクタ受け部とを互いに近づけた状態を断面で示す平面図である。
【図12】 図10に示されたワイヤハーネス用検査治具の検査ピンの要部を示す平面図である。
【図13】 図12に示されたワイヤハーネス用検査治具の検査ピンの要部を断面にして示す平面図である。
【図14】 図10に示されたワイヤハーネス用検査治具で、雌端子の完全挿入時に検査ピンの導通接触部と雌端子とが接触する状態を示す説明図である。
【図15】 図10に示されたワイヤハーネス用検査治具で、雌端子の不完全挿入時に検査ピンの導通接触部と雌端子とが接触しない状態を示す説明図である。
【符号の説明】
1 ワイヤハーネス用検査治具の検査ピン
2 ワイヤハーネス用検査治具
3 ワイヤハーネス
6 雄端子(端子)
12 コネクタ受け部
13 検査部
20 本体部
22 導通接触部
25 接触キャップ(端面接触部)
31a 先端部
33a 表面(端面)
40 雌端子(端子)
41a 先端部
L1 距離(所望の距離)
L2 距離(所望の距離)
T1 突出量
T2 距離
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an inspection pin for a wire harness inspection jig and a wire harness inspection jig that ensure continuity with a terminal of the wire harness when conducting a continuity test on the wire harness.
[0002]
[Prior art]
A wire harness comprising a plurality of electric wires and a connector that accommodates a terminal connected to each of the ends of these electric wires is obtained by checking the presence or absence of conduction with other terminals for each of the terminals. Has been judged.
[0003]
Conventionally, this type of wire harness inspection method has been performed according to the following procedure. One of the terminals of the wire harness is selected and applied to the selected terminal to determine whether the potential of the other terminal is high or low. The voltage is applied to all terminals in order, and the potentials of all terminals other than the applied terminal in each case are sequentially determined. And the mutual electrical connection state of all the terminals is grasped | ascertained.
[0004]
By comparing the state of electrical continuity between the terminals grasped as described above and the state of electrical continuity between the terminals when the wire harness is normal, it is possible to determine whether the wire harness is good or bad and if there is an abnormality, the abnormal location Have figured out.
[0005]
As described above, in order to inspect the wire harness, an inspection jig for holding the connector has been conventionally used (for example, see Patent Document 1). This type of inspection jig includes a connector receiving portion that holds the connector, an inspection portion that is provided in contact with and away from the connector receiving portion by a lever, and the inspection portion that is attached to the inspection portion. And an inspection pin that is electrically connected to the terminal when approaching the portion.
[0006]
The inspection pin is connected to the main body portion attached to the inspection portion and the like, and the conductive contact is provided so as to protrude and retract from the main body portion and is urged in a direction protruding from the main body portion and is brought into contact with the terminal to be conducted. Department. The above-described inspection jig holds the connector in the connector receiving portion, brings the inspection portion close to the connector receiving portion with a lever, and conducts the terminal and the inspection pin, thereby determining the quality of the conduction state between the terminals. It was.
[0007]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-344523
[0008]
[Problems to be solved by the invention]
One of the connector housing and the terminal is provided with a locking arm that locks the other. The terminal is positioned at a predetermined position of the connector housing by the locking arm locking to the other.
[0009]
In many cases, the connector described above accommodates a large number of terminals in one connector housing. For this reason, the position in the direction in which the conductive contact portion at the tip of each terminal protrudes from the main body often varies due to warpage of the connector housing, tolerance of each terminal, or the like. For this reason, in the above-described inspection pin, the amount of protrusion of the inspection portion from the main body portion is increased so that the inspection portion of each inspection pin can reliably contact the tip portion of each terminal.
[0010]
On the other hand, a wider variety of electronic devices have been mounted on the above-described automobiles, and the number of electric wires constituting the above-described wire harness tended to increase. For this reason, of course, the number of terminals accommodated in the connector housing tends to increase, and the above-described connector, that is, the terminal tends to be miniaturized in order to reduce the weight of the wire harness or the like. For this reason, when the above-mentioned locking arm is not securely locked and the terminal cannot be positioned at a predetermined position of the connector housing, the distance between the tip of the terminal and the end surface of the connector housing is slightly larger than the desired distance. It is becoming smaller and smaller. When the locking arm is not securely locked, the terminal is incompletely inserted into the connector housing.
[0011]
In the conventional inspection pin described above, the protrusion amount of the conductive contact portion with respect to the main body portion described above is determined by the above-described tolerance. For this reason, even when the above-described locking arm is not securely locked and the terminal is not positioned at a predetermined position of the connector housing, the inspection pin comes into contact with the tip of the terminal and the connector of the inspection object, that is, There was a possibility that the wire harness would be judged as a good product. As described above, it is difficult to detect incomplete insertion of the terminal into the connector housing in the conventional inspection pin and the inspection jig including the inspection pin.
[0012]
Accordingly, an object of the present invention is to provide an inspection pin for a wire harness inspection jig and a wire harness inspection jig that can reliably detect incomplete insertion of a terminal.
[0013]
[Means for Solving the Problems]
In order to solve the problems and achieve the object, the inspection pin of the inspection tool for wire harness according to the first aspect of the present invention performs continuity inspection on the wire harness provided with the terminal accommodated in the connector housing. An inspection pin of a wire harness inspection jig used for the purpose, wherein the tip of the terminal protrudes from the end surface of the connector housing to the outside of the connector housing and is attached to the wire harness inspection jig A main body, opposed to the end surface of the connector housing, supported in a freely projecting and retracting manner on the main body, and biased in a direction protruding from the main body, and in contact with the tip of the terminal, A conducting contact portion that conducts; Formed into a tube Provided on the outer periphery of the conductive contact portion. And an end surface contact portion that is formed to project from the conductive contact portion toward the end surface of the connector housing and allow the terminal to enter inside. Provided, the end surface contact portion, The distance between the tip of the terminal and the end surface of the connector housing facing the conductive contact portion is equal to or greater than a predetermined desired distance. Spaced from the end face The conduction contact portion is Invaded inside Allowing contact with the tip of the terminal, and contact with the end face when the distance between the tip of the terminal and the end face of the connector housing facing the conducting contact part is less than a predetermined desired distance. And the conductive contact portion Invaded inside It is characterized by restricting contact with the tip of the terminal.
[0015]
Claim 2 The inspection pin of the inspection jig for a wire harness of the present invention described in claim 1 In the inspection pin of the wire harness inspection jig described above, a protruding amount of the end surface contact portion from the conduction contact portion is equal to or less than the desired distance.
[0019]
Claim 3 An inspection jig for a wire harness according to the present invention described in 1 is an inspection jig for a wire harness used for performing a continuity test on a wire harness having a terminal housed in a connector housing, the connector housing being The connector receiving part to be attached, the inspection part provided so as to be relatively close to and away from the connector receiving part, and attached to the inspection part and capable of conducting with a terminal in the connector housing. Or claim 2 The inspection pin of the inspection jig for wire harness described in the above, and a connector housing that accommodates the terminal is attached to the connector receiving portion, the inspection portion and the connector receiving portion are brought close to each other, and the inspection jig for the wire harness is It is characterized by conducting a continuity test on the wire harness by conducting the test pin and the terminal.
[0020]
According to the inspection pin of the wire harness inspection jig of the first aspect of the present invention, the conduction contact portion is insulated from or conducted to the terminal depending on whether or not the end surface contact portion contacts the end surface of the connector housing. For this reason, at the time of incomplete insertion, if the amount of protrusion from the end face of the tip of the terminal is less than the desired distance, the end face contact portion comes into contact with the end face of the connector housing, and the conductive contact portion does not come into contact with the tip end of the terminal.
[0021]
Further, it is inspected whether the distance between the tip of the terminal and the end face of the connector housing is equal to or greater than a desired distance. For this reason, the amount of protrusion from the main body portion of the conductive contact portion can be set based only on the tolerance of the distance between the tip end portion of the terminal and the end surface of the connector housing.
[0022]
The desired distance referred to in this specification is determined at the time of design, and the distal end portion of the terminal and the end surface of the connector housing when the locking arm is locked and the terminal is positioned at a predetermined position of the connector housing. And the distance. That is, the desired distance is the distance described above when the terminal determined at the time of design is completely inserted into the connector housing.
[0023]
end The surface contact portion is tubular and protrudes from the conductive contact portion toward the end surface of the connector housing. For this reason, the end surface contact portion reliably contacts the end surface of the connector housing when the distance between the tip of the terminal and the end surface of the connector housing is less than the desired distance.
[0024]
Claim 2 According to the inspection pin of the inspection jig for a wire harness of the present invention described in 1), the protruding amount of the end surface contact portion from the conduction contact portion is equal to or less than a desired distance.
[0029]
Claim 3 According to the wire harness inspection jig of the present invention described in 1), the conductive contact portion is insulated from or connected to the terminal depending on whether or not the end surface contact portion of the inspection pin contacts the end surface of the connector housing. For this reason, whether the terminal is incompletely inserted can be detected based on whether the inspection pin is insulated from or electrically connected to the terminal.
[0030]
Further, it is inspected whether or not the distance between the tip of the terminal and the end face of the connector housing is greater than or less than a desired distance. For this reason, the amount of protrusion from the main body portion of the conductive contact portion can be set based only on the tolerance of the distance between the tip end portion of the terminal and the end surface of the connector housing.
[0031]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an inspection pin (hereinafter simply referred to as an inspection pin) of a wire harness inspection jig and a wire harness inspection jig according to a first embodiment of the present invention will be described with reference to FIGS. The inspection pin 1 shown in FIG. 3 or the like constitutes a wire harness inspection jig (hereinafter simply referred to as an inspection jig) 2 shown in FIG. The inspection jig 2 is used when conducting a continuity test on the wire harness 3. As shown in FIG. 1, the wire harness 3 includes a plurality of electric wires 4 and a plurality of connectors 5 (only one is shown in FIG. 1).
[0032]
The electric wire 4 is a so-called covered electric wire provided with a conductive core wire and an insulating covering portion that covers the core wire. As shown in FIGS. 2 and 3, the connector 5 includes male terminals (hereinafter simply referred to as male terminals) 6 (shown in FIG. 4) as terminals and a connector housing 7.
[0033]
The male terminal 6 is obtained by bending a conductive sheet metal or the like. The male terminal 6 is integrally provided with a wire connecting portion 30 and a tab 31 as an electrical contact portion. The electric wire connecting portion 30 is attached to an end portion of the electric wire 4 and electrically connected to the core wire, that is, the electric wire 4. The tab 31 is formed in a plate shape. An end portion (hereinafter referred to as a tip portion) 31a on the side away from the wire connection portion 30 of the tab 31 forms a tip portion of the male terminal 6 described in this specification.
[0034]
The connector housing 7 is made of an insulating synthetic resin and is formed in a box shape. As shown in FIGS. 2 and 3, the connector housing 7 includes a plurality of terminal accommodating chambers 8. The terminal accommodating chamber 8 accommodates the male terminal 6. Each terminal accommodating chamber 8 is provided with a locking arm 32. The locking arm 32 is locked to the male terminal 6.
[0035]
Further, when the connector housing 7, that is, the connector 5 is attached to a later-described connector receiving portion 12 of the inspection jig 2, the terminal accommodating chamber 8 is provided on the connector housing 7 facing the inspection pin 1 attached to the later-described inspection portion 13. It penetrates the outer wall 33. A surface 33a of the outer wall 33 that faces a later-described conduction contact portion 22 of the inspection pin 1 has no end face described in the present specification.
[0036]
Each terminal accommodating chamber 8 accommodates the male terminal 6 in a state where the tab 31 protrudes from the surface 33a of the outer wall 33 toward the inspection pin 1 (that is, outside the connector housing 7). And the latching arm 32 latches to the male terminal 6, and the terminal storage chamber 8 prevents that the male terminal 6 slips out. At this time, the tab 31 protrudes from the surface 33a of the outer wall 33 by a distance L1. The distance L1 is a desired distance described in this specification.
[0037]
The distance L <b> 1 is determined when the locking arm 32 is locked to the male terminal 6, i.e., when the male terminal 6 is accommodated in the normal position of the connector housing 7 and the tip 31 a of the tab 31 of the male terminal 6 and the connector housing 7. A distance from the surface 33a of the inspection pin 1 facing a conductive contact portion 22 described later is formed.
[0038]
For this reason, the distance L1 is determined when the connector 5 or the like is designed, and the male arm 6 is locked when the locking arm 32 is locked and the male terminal 6 is positioned at a predetermined position of the connector housing 7, that is, when the male terminal 6 is completely inserted. This is the distance between the tip 31 a of the tab 31 of the terminal 6 and the surface 33 a of the connector housing 7. Complete insertion indicates a state in which the locking arm 32 is locked to the male terminal 6. A state where the locking arm 32 is not locked to the male terminal 6 accommodated in the terminal accommodating chamber 8 is referred to as incomplete insertion. When incompletely inserted, the distance between the tip 31a of the tab 31 of the male terminal 6 and the surface 33a of the connector housing 7 is smaller than the distance L1.
[0039]
The wire harness 3 is obtained by attaching a male terminal 6 to an end of an electric wire 4 and the like and housing the male terminal 6 in a connector housing 7. The wire harness 3 having such a configuration is routed in an automobile. The connector 5 of the wire harness 3 is connected to a connector of an electronic device mounted on the automobile. The wire harness 3 transmits power from a power source such as a battery and a control signal from a control device to the electronic device.
[0040]
As shown in FIG. 1, the inspection jig 2 includes a base 10 installed on a table or the like, an operation lever 11, a connector receiving portion 12, and an inspection portion 13. The base 10 includes a pair of side walls 14 that are parallel to each other. The operation lever 11, the connector receiving part 12, and the inspection part 13 are provided between the pair of side walls 14.
[0041]
The operation lever 11 is supported at one end of the side wall 14 so as to be rotatable along an arrow K. The connector receiving portion 12 is provided at the other end portion of the side wall 14. The connector receiving portion 12 holds the connector 5 in a state where the opening portion of the terminal accommodating chamber 8, that is, the above-described surface 33 a faces the operation lever 11, that is, the inspection portion 13. In the illustrated example, the connector 5 can be inserted into and removed from the connector receiving portion 12 along the vertical direction.
[0042]
The inspection unit 13 is provided at the center of the side wall 14. As shown in FIGS. 2 and 3, the inspection unit 13 includes an inspection unit main body 15 and a plurality of inspection pins 1. The inspection unit main body 15 is formed in a rectangular shape. The inspection unit main body 15 is disposed between the pair of side walls 14 so as to be slidable in a direction toward or away from the connector receiving unit 12. That is, the inspection unit main body 15 is disposed between the pair of side walls 14 so as to be able to contact with and separate from the connector receiving unit 12 along the arrow S. In addition, approaching / separating means approaching or separating from each other. The inspection unit main body 15 is connected to the operation lever 11 by a link 17, and slides along the arrow S in conjunction with the rotation of the operation lever 11 along the arrow K.
[0043]
The inspection pin 1 is embedded (attached) in the inspection unit main body 15. The inspection pins 1 are provided in the same number as the terminal accommodating chambers 8 of the connector 5 held by the connector receiving portion 12. In the inspection pin 1, a conductive contact portion 22 described later protrudes from the inspection portion main body 15 toward the connector receiving portion 12. The conduction contact portion 22 is opposed to the connector receiving portion 12. That is, the conduction contact portion 22 faces the surface 33 a of the connector housing 7. In the inspection pin 1, a contact surface 22 a, which will be described later, of the conduction contact portion 22 faces the terminal accommodating chamber 8, that is, the tip portion 31 a of the tab 31 of the male terminal 6.
[0044]
As shown in FIGS. 2 to 5, the inspection pin 1 includes a tubular main body portion 20, a conductive conduction pin 21 (shown in FIG. 5), a conductive conduction contact portion 22, and a base cap 24 ( 5), a conductive coil spring 23 (shown in FIG. 5) as an urging means, and a contact cap 25 as an end face contact portion. As shown in FIGS. 2 and 3, the main body 20 is attached to the inspection unit main body 15 of the inspection jig 2.
[0045]
A step portion 26 is provided at the center of the main body portion 20. The step portion 26 changes the inner diameter of the main body portion 20 step by step. The inner diameter closer to the connector receiving portion 12 than the stepped portion 26 is smaller than the inner diameter on the side farther from the connector receiving portion 12 than the stepped portion 26.
[0046]
The conduction pin 21 is made of metal or the like, and includes a cylindrical pin main body 27 and a thick portion 28 provided at the center of the pin main body 27. The outer diameter of the pin body 27 is equal to the inner diameter closer to the connector receiving portion 12 than the step portion 26 of the body portion 20. The thick part 28 protrudes from the pin main body 27 in the outer peripheral direction over the entire circumference, and the thick part 28 and the pin main body 27 are arranged coaxially with each other. The outer diameter of the thick portion 28 is equal to the inner diameter on the side farther from the connector receiving portion 12 than the step portion 26 of the main body portion 20. The conduction pin 21 is accommodated in the main body 20 so as to be slidable in the longitudinal direction of the main body 20.
[0047]
When the conductive pin 21 is accommodated in the main body portion 20, the thick portion 28 comes into contact with the step portion 26. A thread groove is formed on the outer periphery of the end of the pin body 27 near the connector receiving portion 12, and the electric wire 16 is attached to the end of the pin main body 27 on the side away from the connector receiving portion 12. . The electric wire 16 is connected to a computer or the like (not shown).
[0048]
The conduction contact portion 22 is formed in a cylindrical shape, and is screwed into the above-described screw groove and attached to the pin body 27, that is, the conduction pin 21. When the conductive contact portion 22 is attached to the pin main body 27, it is coaxial with the pin main body 27. The conduction contact portion 22 is attached to the main body portion 20 so as to be slidable along its axis by being attached to the pin main body 27. In other words, the conductive contact portion 22 is supported by the main body portion 20 so as to protrude and retract.
[0049]
Further, the conductive contact portion 22 does not come out of the main body portion 20 due to the thick portion 28 and the step portion 26. An end surface (hereinafter referred to as a contact surface) 22a opposite to the distal end portion 31a of the tab 31 of the male terminal 6 of the connector 5 attached to the connector receiving portion 12 of the conductive contact portion 22 is referred to as the conductive contact portion 22. Are formed flat along a direction orthogonal to the above-described axis S and the arrow S described above.
[0050]
The base cap 24 is attached to the end portion of the main body portion 20 on the side away from the connector receiving portion 12. The base cap 24 is fitted to the outer periphery of the conductive pin 21 and is fitted to the inner periphery of the main body 20. The base cap 24 keeps the conducting pin 21 and the main body 20 coaxial with each other.
[0051]
The coil spring 23 is accommodated in the main body 20, passes through the conduction pin 21 on the inside, and is provided between the base cap 24 and the thick portion 28. The coil spring 23 urges the thick portion 28, that is, the conduction contact portion 22 in a direction protruding from the main body portion 20. That is, the coil spring 23 urges the conduction contact portion 22 toward the distal end portion 31 a of the tab 31 of the male terminal 6 of the connector 5 attached to the connector receiving portion 12.
[0052]
The contact cap 25 is made of a synthetic resin such as polyetheretherketone (PEEK) and is formed in a cylindrical shape. As shown in FIG. 8, the contact cap 25 is engaged with the outer periphery of the distal end portion of the conduction contact portion 22 near the connector receiving portion 12. For this reason, the contact cap 25 is provided on the outer periphery of the contact surface 22 a of the conduction contact portion 22. That is, the contact cap 25 has the conduction contact portion 22 disposed inside. The contact cap 25 and the conductive contact portion 22 are coaxial with each other. Further, the contact cap 25 protrudes from the contact surface 22 a of the conduction contact portion 22 toward the connector receiving portion 12.
[0053]
The protrusion amount T1 of the contact surface 22a of the contact cap 25 protruding from the conductive contact portion 22 toward the connector receiving portion 12 is slightly smaller than the distance L1 described above. The difference between the distance L1 and the protrusion amount T1 is desirably a value that can determine whether the male terminal 6 is the above-described complete insertion or incomplete insertion. That is, the protrusion amount T1 is not more than the distance L1.
[0054]
Therefore, if the male terminal 6 is completely inserted, the contact cap 25 does not come into contact with the surface 33a of the connector 5 when the inspection part 13 is brought close to the connector receiving part 12, and as shown in FIG. The front end portion 31 a of the tab 31 of the male terminal 6 contacts the contact surface 22 a of 22. For this reason, when the male terminal 6 is completely inserted, the contact cap 25 allows the tip portion 31 a of the tab 31 of the male terminal 6 to contact the contact surface 22 a of the conduction contact portion 22. For this reason, when the distance between the tip 31a of the tab 31 of the male terminal 6 and the surface 33a of the connector housing 7 is equal to or greater than the predetermined distance L1, the contact cap 25 is connected to the conductive contact 22 of the male terminal 6. Contact with the tip 31 a of the tab 31 is allowed.
[0055]
When the male terminal 6 is incompletely inserted, when the inspection portion 13 is brought close to the connector receiving portion 12, the contact cap 25 comes into contact with the surface 33a of the connector 5, and as shown in FIG. The front end portion 31a of the tab 31 of the male terminal 6 does not contact the surface 22a. For this reason, if the male terminal 6 is incompletely inserted, the contact cap 25 restricts the tip portion 31 a of the tab 31 of the male terminal 6 from contacting the contact surface 22 a of the conductive contact portion 22. For this reason, the contact cap 25 comes into contact with the surface 33a when the distance between the tip 31a of the tab 31 of the male terminal 6 and the surface 33a of the connector housing 7 is less than a predetermined desired distance L1, and is in conductive contact. It restricts that the part 22 contacts the front-end | tip part 31a of the tab 31 of the male terminal 6. FIG.
[0056]
When conducting a continuity test on the wire harness 3 using the inspection jig 2 having the inspection pin 1 having the above-described configuration, first, the inspection unit 13 is separated from the connector receiving unit 12 and the inspection jig 2 The connector 5 is attached (held) to the connector receiving portion 12. The operation lever 11 is rotated along the arrow K, and the inspection unit 13 is brought close to the connector receiving unit 12, that is, the connector 5 along the arrow S.
[0057]
Then, since the conduction contact portion 22 is biased by the coil spring 23, when the male terminal 6 is completely inserted, as shown in FIG. 6, the contact surface 22a of the conduction contact portion 22 and the male terminal of the connector 5 The tip portions 31a of the six tabs 31 are in contact with each other. If the male terminal 6 is incompletely inserted, the contact surface 22a of the conduction contact portion 22 and the tip end portion 31a of the tab 31 of the male terminal 6 of the connector 5 do not contact each other as shown in FIG.
[0058]
The above-described computer or the like applies sequentially to the male terminal 6 via the electric wire 16 and the inspection pin 1. The computer grasps the state of conduction between the male terminals 6. Comparing the grasped conduction state with the conduction state in the case of a non-defective product, the quality of the wire harness 3 such as whether the male terminal 6 is completely inserted or incompletely inserted is determined.
[0059]
According to the present embodiment, the conduction contact portion 22 is insulated or conducted with the male terminal 6 depending on whether or not the contact cap 25 contacts the surface 33 a of the connector housing 7. For this reason, when the amount of protrusion from the surface 33a of the tip 31a of the tab 31 of the male terminal 6 is less than the desired distance L1 during incomplete insertion, the contact cap 25 comes into contact with the surface 33a of the connector housing 7 and is in conductive contact. The portion 22 does not contact the tip portion 31 a of the tab 31 of the male terminal 6.
[0060]
Further, it is inspected whether or not the distance between the distal end portion 31a of the male terminal 6 and the surface 33a of the connector housing 7 is a desired distance L1 or more. For this reason, the amount of protrusion of the conduction contact portion 22 from the main body portion 20 can be set based only on the tolerance of the distance between the tip portion 31 a of the male terminal 6 and the surface 33 a of the connector housing 7. For this reason, it is not necessary to consider the warpage of the connector housing 7 when setting the amount by which the conductive contact portion 22 protrudes from the main body portion 20. The amount of protrusion from the portion 20 can be made very small.
[0061]
For this reason, it is possible to prevent the conduction contact portion 22 from coming into contact with the tip portion 31a of the male terminal 6 when the distance between the tip portion 31a of the male terminal 6 and the surface 33a is incompletely inserted below the desired distance L1. Accordingly, erroneous detection can be prevented, and incomplete insertion of the male terminal 6 can be reliably detected.
[0062]
The contact cap 25 is tubular and protrudes from the conductive contact portion 22 toward the surface 33 a of the connector housing 7. For this reason, the contact cap 25 reliably contacts the surface 33a of the connector housing 7 when the distance between the tip 31a of the tab 31 of the male terminal 6 and the surface 33a of the connector housing 7 is less than the desired distance L1.
[0063]
The protrusion amount T1 from the contact surface 22a of the conductive contact portion 22 of the contact cap 25 is smaller than the desired distance L1. Thereby, the contact cap 25 reliably contacts the surface 33a of the connector housing 7 when the distance between the tip 31a of the tab 31 of the male terminal 6 and the surface 33a of the connector housing 7 is less than the desired distance L1.
[0064]
In this way, it is possible to reliably detect whether or not the protruding amount of the tip 31a of the tab 31 of the male terminal 6 from the surface 33a of the connector housing 7 is equal to or greater than the desired distance L1. For this reason, it can be reliably detected whether the male terminal 6 is incompletely inserted by being insulated or conducting with the male terminal 6.
[0065]
In the first embodiment described above, the contact cap 25 is formed in a circular tube shape, and the contact surface 22a of the conduction contact portion 22 is formed flat. However, in the present invention, as shown in FIG. 9, a tapered surface 34 is provided at the end of the contact cap 25 near the connector receiving portion 12, and a concave portion 37 is provided on the contact surface 22a by a plurality of tapered surfaces 35, 36. good.
[0066]
The tapered surface 34 gradually increases the inner diameter of the contact cap 25 toward the connector receiving portion 12. The opening of the concave portion 37 gradually increases toward the connector receiving portion 12 due to the tapered surfaces 35 and 36. Moreover, the recessed part 37 is deepest from the contact surface 22a in the center part of the contact surface 22a. By providing these tapered surfaces 34, 35, 36, the tab 31 can be reliably inserted into the contact cap 25, and the tab 31 can be reliably brought into contact with the bottom of the recess 37.
[0067]
Next, the present invention Disclosure example The inspection pin 1 and the inspection jig 2 will be described with reference to FIGS. Note that the same components as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.
[0068]
Book Disclosure example Then, the quality of the wire harness 3 is determined, such as whether a female terminal (hereinafter simply referred to as a female terminal) 40 as a terminal in the connector housing 7 of the connector 5 is completely inserted or incompletely inserted. That is, book Disclosure example The connector 5 of the wire harness 3 as the inspection object includes a female terminal 40 as shown in FIGS. 10 and 11. The electrical contact portion 41 of the female terminal 40 is formed in a cylindrical shape. When the female terminal 40 is accommodated in the terminal accommodating chamber 8, the cylindrical electrical contact portion 41 is immersed in the connector housing 7 from the surface 33 a of the connector housing 7.
[0069]
Further, at the time of complete insertion, the electrical contact portion 41 of the female terminal 40 is immersed in the connector housing 7 at a distance L2 from the surface 33a of the connector housing 7. The distance L2 is a desired distance described in this specification. The distance L <b> 2 is a distance from the wire connection portion 30 of the electrical contact portion 41 of the female terminal 40 when the locking arm 32 is locked to the female terminal 40, that is, when the female terminal 40 is accommodated in the normal position of the connector housing 7. The distance between the front end 41a on the other side and the surface 33a of the connector housing 7 is formed. In addition, the front-end | tip part 41a has comprised the front-end | tip part of the female terminal 40 described in this specification.
[0070]
Further, at the time of incomplete insertion, the distance between the distal end portion 41a of the electrical contact portion 41 of the female terminal 40 and the surface 33a of the connector housing 7 becomes larger than the distance L2.
[0071]
Book Disclosure example As shown in FIGS. 12 and 13, the conduction contact portion 22 of the inspection pin 1 is formed in a cylindrical shape, and the contact cap 25 is formed in a circular tube shape and the outer periphery of the contact surface 22 a of the conduction contact portion 22. Is fitted. That is, the contact cap 25 has the conduction contact portion 22 disposed inside. The contact cap 25 is farther from the connector receiving portion 12 than the contact surface 22 a of the conduction contact portion 22. That is, the conduction contact portion 22 protrudes from the contact cap 25 toward the connector receiving portion 12. A distance T2 between the contact surface 22a of the conductive contact portion 22 and the contact cap 25 is slightly larger than the distance L2 described above. That is, the distance T2 is not less than the distance L2.
[0072]
The difference between the distance L2 and the distance T2 is preferably a value that can determine whether the female terminal 40 is the above-described complete insertion or incomplete insertion. Therefore, if the female terminal 40 is completely inserted, the contact cap 25 does not come into contact with the surface 33a of the connector 5 when the inspection portion 13 is brought close to the connector receiving portion 12, and as shown in FIG. The tip end portion 41 a of the electrical contact portion 41 of the female terminal 40 contacts the contact surface 22 a of 22. For this reason, when the female terminal 40 is completely inserted, the contact cap 25 allows the front end portion 41 a of the electrical contact portion 41 of the female terminal 40 to contact the contact surface 22 a of the conductive contact portion 22. For this reason, when the distance between the tip 41a of the electrical contact portion 41 of the female terminal 40 and the surface 33a of the connector housing 7 is equal to or less than a predetermined distance L2 that is determined in advance, 22a is allowed to contact the tip portion 41a of the electrical contact portion 41 of the female terminal 40.
[0073]
If the female terminal 40 is incompletely inserted, the contact cap 25 comes into contact with the surface 33a of the connector 5 when the inspection portion 13 is brought close to the connector receiving portion 12, and as shown in FIG. The front end portion 41a of the electrical contact portion 41 of the female terminal 40 does not contact the surface 22a. For this reason, when the female terminal 40 is incompletely inserted, the contact cap 25 restricts the front end portion 41 a of the electrical contact portion 41 of the female terminal 40 from contacting the contact surface 22 a of the conductive contact portion 22. For this reason, the contact cap 25 comes into contact with the surface 33a when the distance between the distal end portion 41a of the electrical contact portion 41 of the female terminal 40 and the surface 33a of the connector housing 7 exceeds a predetermined desired distance L2. The contact surface 22 a of the conductive contact portion 22 is restricted from contacting the tip portion 41 a of the electrical contact portion 41 of the female terminal 40.
[0074]
Book Disclosure example According to the above, the conduction contact portion 22 is insulated or conducted with the female terminal 40 depending on whether or not the contact cap 25 contacts the surface 33a of the connector housing 7. For this reason, when the distance from the surface 33a of the front end portion 41a of the electrical contact portion 41 of the female terminal 40 exceeds the desired distance L2 during incomplete insertion, the contact cap 25 comes into contact with the surface 33a of the connector housing 7 and becomes conductive. The contact part 22 does not contact the tip part 41 a of the electrical contact part 41 of the female terminal 40.
[0075]
Further, it is inspected whether or not the distance between the distal end portion 41a of the female terminal 40 and the surface 33a of the connector housing 7 is a desired distance L2 or less. For this reason, the amount of protrusion of the conduction contact portion 22 from the main body portion 20 can be set based only on the tolerance of the distance between the tip portion 41 a of the female terminal 40 and the surface 33 a of the connector housing 7. For this reason, it is not necessary to consider the warpage of the connector housing 7 when setting the amount by which the conductive contact portion 22 protrudes from the main body portion 20. The amount of protrusion from the portion 20 can be made very small.
[0076]
For this reason, it is possible to prevent the conduction contact portion 22 from coming into contact with the tip portion 41a of the female terminal 40 when the distance between the tip portion 41a of the female terminal 40 and the surface 33a exceeds the desired distance L2. Accordingly, erroneous detection can be prevented, and incomplete insertion of the female terminal 40 can be reliably detected.
[0077]
The contact cap 25 is tubular and away from the surface 33 a of the connector housing 7 from the conductive contact portion 22. For this reason, when the distance between the tip 41a of the electrical contact portion 41 of the female terminal 40 and the surface 33a of the connector housing 7 exceeds the desired distance L2, the contact cap 25 reliably contacts the surface 33a of the connector housing 7. .
[0078]
The distance T2 from the contact surface 22a of the conductive contact portion 22 of the contact cap 25 is larger than the desired distance L2. Thus, the contact cap 25 reliably contacts the surface 33a of the connector housing 7 when the distance between the tip 41a of the electrical contact portion 41 of the female terminal 40 and the surface 33a of the connector housing 7 exceeds a desired distance L2. .
[0079]
Thus, it can be reliably detected whether the distance from the surface 33a of the connector housing 7 of the tip 41a of the electrical contact portion 41 of the female terminal 40 is equal to or less than the desired distance L2. For this reason, it can be reliably detected whether the female terminal 40 is incompletely inserted by insulating or conducting the female terminal 40 and the inspection pin 1.
[0080]
First mentioned above Embodiments and disclosure examples Then, the contact cap 25 and the conductive contact portion 22 are separated from each other. However, in the present invention, the contact cap 25 and the conductive contact portion 22 may be integrated. In this case, of course, it is desirable that the contact cap 25 and the conductive contact portion 22 are made of metal.
[0081]
Further, the embodiment described above And disclosure examples Then, the protrusion amount T1 is slightly smaller than the distance L1, and the distance T2 is slightly larger than the distance L2. However, in the present invention, the protrusion amount T1 may be equal to the distance L1, and the distance T2 may be equal to the distance L2. In short, in the present invention, if the difference between the protrusion amount T1 and the distance L1 can detect the incomplete insertion of the male terminal 6, the protrusion amount T1 may be set to the distance L1 or less. In the present invention, if the difference between the distance T2 and the distance L2 can detect the incomplete insertion of the female terminal 40, the distance T2 may be set to be equal to or greater than the distance L2.
[0082]
In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.
[0083]
【The invention's effect】
As described above, according to the first aspect of the present invention, when the amount of protrusion from the end surface of the tip of the terminal is less than a desired distance during incomplete insertion, the end surface contact portion is connected to the end surface of the connector housing. The conductive contact portion does not come into contact with the tip of the terminal due to contact. In this way, it is possible to reliably detect whether or not the protruding amount of the tip end portion of the terminal from the end face of the connector housing is greater than or equal to a desired distance. For this reason, it can be reliably detected whether the terminal is incompletely inserted by being insulated or conducting with the terminal.
[0084]
Further, the amount of protrusion from the main body portion of the conductive contact portion can be set based only on the tolerance of the distance between the tip end portion of the terminal and the end surface of the connector housing. For this reason, it is not necessary to consider the warpage of the connector housing when setting the amount by which the conductive contact portion protrudes from the main body portion, and the conductive contact portion protrudes from the main body portion when considering the warpage of the connector housing. The amount can be very small.
[0085]
For this reason, it is possible to prevent the conductive contact portion from coming into contact with the tip portion of the terminal during incomplete insertion in which the distance between the tip portion and the end surface of the terminal is less than a desired distance. Therefore, erroneous detection can be prevented and incomplete insertion of the terminal can be reliably detected.
[0086]
end The surface contact portion reliably contacts the end surface of the connector housing when the distance between the tip of the terminal and the end surface of the connector housing is less than the desired distance. In this way, it is possible to reliably detect whether or not the protruding amount of the tip end portion of the terminal from the end face of the connector housing is greater than or equal to a desired distance. For this reason, it can be reliably detected whether the terminal is incompletely inserted by being insulated or conducting with the terminal.
[0087]
Claim 2 According to the present invention described above, since the protruding amount from the conductive contact portion is equal to or less than the desired distance, the end surface contact portion is surely secured when the distance between the tip end portion of the terminal and the end surface of the connector housing is less than the desired distance. Contact the end face of the connector housing. In this way, it is possible to reliably detect whether or not the protruding amount of the tip end portion of the terminal from the end face of the connector housing is greater than or equal to a desired distance. For this reason, it can be reliably detected whether the terminal is incompletely inserted by being insulated or conducting with the terminal.
[0093]
Claim 3 According to the present invention described above, the conduction contact portion is insulated from or conducted to the terminal depending on whether or not the end surface contact portion of the inspection pin contacts the end surface of the connector housing. For this reason, whether the terminal is incompletely inserted can be detected based on whether the inspection pin is insulated from or electrically connected to the terminal.
[0094]
Further, the amount of protrusion from the main body portion of the conductive contact portion can be set based only on the tolerance of the distance between the tip end portion of the terminal and the end surface of the connector housing. For this reason, it is not necessary to consider the warpage of the connector housing when setting the amount by which the conductive contact portion protrudes from the main body portion, and the conductive contact portion protrudes from the main body portion when considering the warpage of the connector housing. The amount can be very small.
[0095]
For this reason, it is possible to prevent the conduction contact portion from contacting the tip portion of the terminal when the distance between the tip portion and the end surface of the terminal is less than or exceeds the desired distance. Therefore, erroneous detection can be prevented and incomplete insertion of the terminal can be reliably detected.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a wire harness inspection jig according to a first embodiment of the present invention.
FIG. 2 is a plan view showing in cross section an inspection portion and a connector receiving portion of the wire harness inspection jig shown in FIG. 1;
FIG. 3 is a plan view showing in cross section a state in which an inspection unit and a connector receiving unit shown in FIG. 2 are brought close to each other.
4 is a plan view showing an inspection pin of the wire harness inspection jig shown in FIG. 1; FIG.
FIG. 5 is a plan view showing a cross section of an inspection pin of the wire harness inspection jig shown in FIG. 4;
6 is an explanatory view showing a state in which the conduction contact portion of the inspection pin and the male terminal are in contact with each other when the male terminal is completely inserted in the wire harness inspection jig shown in FIG. 1;
7 is an explanatory view showing a state where the conduction contact portion of the inspection pin and the male terminal are not in contact with each other when the male terminal is incompletely inserted in the wire harness inspection jig shown in FIG. 1;
8 is a plan view showing a cross section of a conductive contact portion and a contact cap of an inspection pin of the wire harness inspection jig shown in FIG. 5;
FIG. 9 is a plan view showing a modification of the conductive contact portion and the contact cap of the inspection pin of the wire harness inspection jig shown in FIG. 8;
FIG. 10 shows the present invention. Disclosure example It is a top view shown in the section which shows the inspection part of the inspection jig for wire harness concerning this, a connector receiving part, etc.
11 is a plan view showing in cross section a state in which the inspection unit and the connector receiving unit shown in FIG. 10 are close to each other.
12 is a plan view showing a main part of an inspection pin of the wire harness inspection jig shown in FIG. 10;
13 is a plan view showing a cross-section of the main part of an inspection pin of the wire harness inspection jig shown in FIG. 12;
14 is an explanatory view showing a state in which the conductive contact portion of the inspection pin and the female terminal are in contact with each other when the female terminal is completely inserted in the wire harness inspection jig shown in FIG. 10;
15 is an explanatory diagram showing a state in which the conductive contact portion of the inspection pin and the female terminal do not contact with each other when the female terminal is incompletely inserted in the wire harness inspection jig shown in FIG. 10;
[Explanation of symbols]
1 Inspection pin of inspection jig for wire harness
2 Inspection jig for wire harness
3 Wire harness
6 Male terminal (terminal)
12 Connector receiving part
13 Inspection Department
20 Main body
22 Conductive contact
25 Contact cap (end face contact part)
31a Tip
33a Surface (end face)
40 Female terminal (terminal)
41a Tip
L1 distance (desired distance)
L2 distance (desired distance)
T1 protrusion amount
T2 distance

Claims (3)

コネクタハウジング内に収容された端子を備えたワイヤハーネスに導通検査を行うために用いられるワイヤハーネス用検査治具の検査ピンであって、
前記端子の先端部は、前記コネクタハウジングの端面から該コネクタハウジングの外側に突出しており、
前記ワイヤハーネス用検査治具に取り付けられる本体部と、
前記コネクタハウジングの端面と相対し、前記本体部に突没自在に支持されかつ前記本体部から突出する方向に付勢されているとともに前記端子の先端部に接触して前記端子と導通する導通接触部と、
管状に形成されて前記導通接触部の外周に設けられ、かつ内側に前記導通接触部を配しているとともに前記導通接触部より前記コネクタハウジングの端面に向かって突出して形成されて、内側に前記端子が侵入することを許容する端面接触部と、を備え、
前記端面接触部は、前記端子の先端部と前記コネクタハウジングの前記導通接触部に相対する端面との距離が予め定められる所望の距離以上であると前記端面と間隔をあけて前記導通接触部が内側に侵入した前記端子の先端部に接触することを許容するとともに、前記端子の先端部と前記コネクタハウジングの前記導通接触部に相対する端面との距離が予め定められる所望の距離未満であると前記端面と接触して前記導通接触部が内側に侵入した前記端子の先端部と接触することを規制することを特徴とするワイヤハーネス用検査治具の検査ピン。
An inspection pin for an inspection jig for a wire harness used for conducting a continuity test on a wire harness provided with a terminal housed in a connector housing,
The tip of the terminal protrudes from the end surface of the connector housing to the outside of the connector housing,
A main body attached to the wire harness inspection jig;
Conductive contact opposite to the end face of the connector housing, being supported by the main body part so as to protrude and retract, and biased in a direction protruding from the main body part, and in contact with the terminal part of the terminal and conducting with the terminal And
It is formed in a tubular shape and is provided on the outer periphery of the conductive contact portion , and the conductive contact portion is arranged on the inner side, and is formed to protrude from the conductive contact portion toward the end surface of the connector housing, and is formed on the inner side. An end surface contact portion that allows the terminal to enter, and
The end surface contact portion is spaced apart from the end surface when the distance between the end of the terminal and the end surface of the connector housing facing the conductive contact portion is a predetermined distance or more. While allowing contact with the tip portion of the terminal that has entered inside, the distance between the tip portion of the terminal and the end surface of the connector housing facing the conductive contact portion is less than a predetermined desired distance. An inspection pin for an inspection jig for a wire harness , wherein the contact pin is in contact with the end surface and the contact portion is restricted from coming into contact with a tip portion of the terminal that has entered inside .
前記端面接触部の前記導通接触部からの突出量は、前記所望の距離以下であることを特徴とする請求項記載のワイヤハーネス用検査治具の検査ピン。Projecting amount from the conducting contact of the end surface contact section, test pin according to claim 1, wherein the wire harness inspecting jig, wherein the or less desired distance. コネクタハウジング内に収容された端子を備えたワイヤハーネスに導通検査を行うために用いられるワイヤハーネス用検査治具であって、
前記コネクタハウジングを取り付けるコネクタ受け部と、
前記コネクタ受け部と相対的に接離自在に設けられた検査部と、
前記検査部に取り付けられかつ前記コネクタハウジング内の端子と導通可能な請求項1又は請求項2に記載のワイヤハーネス用検査治具の検査ピンとを備え、
前記コネクタ受け部に前記端子を収容したコネクタハウジングを取り付け、前記検査部とコネクタ受け部とを近づけて、前記ワイヤハーネス用検査治具の検査ピンと前記端子とを導通させてワイヤハーネスに導通検査を行うことを特徴とするワイヤハーネス用検査治具。
An inspection jig for a wire harness used for conducting a continuity test on a wire harness provided with a terminal housed in a connector housing,
A connector receiving portion for attaching the connector housing;
An inspection portion provided so as to be relatively close to and away from the connector receiving portion;
The inspection pin of the inspection jig for a wire harness according to claim 1 or 2 , wherein the inspection pin is attached to the inspection unit and can be electrically connected to a terminal in the connector housing.
A connector housing containing the terminal is attached to the connector receiving portion, the inspection portion and the connector receiving portion are brought close to each other, and the inspection pin of the wire harness inspection jig and the terminal are electrically connected to inspect the continuity of the wire harness. An inspection jig for a wire harness characterized by being performed.
JP2003201316A 2003-07-24 2003-07-24 Inspection pin for wire harness inspection jig and inspection jig for wire harness Expired - Fee Related JP3935119B2 (en)

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JP4851217B2 (en) * 2006-03-28 2012-01-11 古河電気工業株式会社 Connector inspection device
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