JP3674038B2 - Retaining clip for connector - Google Patents

Retaining clip for connector Download PDF

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Publication number
JP3674038B2
JP3674038B2 JP2002096014A JP2002096014A JP3674038B2 JP 3674038 B2 JP3674038 B2 JP 3674038B2 JP 2002096014 A JP2002096014 A JP 2002096014A JP 2002096014 A JP2002096014 A JP 2002096014A JP 3674038 B2 JP3674038 B2 JP 3674038B2
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Japan
Prior art keywords
connector
pipe
pipe body
axial direction
hose
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JP2002096014A
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JP2003294183A (en
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知己 井上
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Sumitomo Riko Co Ltd
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Sumitomo Riko Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、例えば自動車のガソリン燃料配管の接続に用いられるコネクタに嵌め付けられたパイプ体及びホースがコネクタから外れるのを防止するコネクタ用抜け止めクリップに関する。
【0002】
【従来の技術】
流体配管の接続に用いられるコネクタとパイプ体との連結は、例えば、パイプ体の外周面の軸方向一方側に環状係合突部を形成しておくとともに、コネクタのパイプ挿入部内にリテーナーを嵌め付けておき、環状係合突部がこのリテーナーの軸方向一方側端部とスナップ係合するようにパイプ体をこのリテーナー内に挿入してパイプ体とコネクタとを抜け止め状態とすることにより行われる。しかしながら、リテーナーは通常、弾性変形可能な樹脂等の比較的柔軟な材料で形成されていて、流体配管に高圧流体が流れ、コネクタとパイプとに大きな引離し力が作用すると、リテーナーが変形させられてパイプ体がリテーナーから外れてしまうといった事態も生じる可能性がある。したがって、コネクタ接続個所にはパイプ体がコネクタから外れないように補強するパイプ体抜け止め構造を構成しておくことが好ましい。
【0003】
また、コネクタのホース接続部の外周面には凹凸の抜け止め形状が形成されていて、ホースはこのホース接続部にきつく嵌め付けられて接続されることとなるが、ホースは比較的柔軟に形成される場合もあり、凹凸の抜け止め形状との係合だけで十分なホース抜け止め機能を常に確保できるとはかぎらない。したがって、コネクタ接続個所にはホースがコネクタから外れないように補強するホース抜け止め構造を構成しておくことが好ましい。
【0004】
【発明が解決しようとする課題】
ところで、実開昭62−86488号公報には、水道蛇口と継手との抜け止め構造に関するものではあるが、蛇口の蛇口栓部に帯体を掛け、この帯体の両端部を、継手に突出して形成した係合部に接続する抜け止め構造が記載されている。しかしながら、このような抜け止め構造は、屈曲部又は屈曲部から延びる延長部の軸線と交差する方向に突出する蛇口栓部のような突出部が形成されていないパイプ体とコネクタとの間には適用することができない。
【0005】
また、実開昭61−114190号公報には、パイプ体の屈曲部を利用したパイプ体とホースとの抜け止め構造が記載されている。しかしながら、このようなホース抜け止め構造は、ホースがパイプ体の屈曲部又は屈曲部から延びる延長部と直交又はほぼ直交して延びている接続形態に用いられるものであり、ホースがパイプ体の直管部と屈曲して延びる接続形態には適用することがむずかしいものである。
【0006】
そこで本発明は、ホース接続部がコネクタ軸線に対して屈曲して形成されたコネクタと、屈曲部を有するパイプ体との接続個所に用いられ、ホース及びパイプ体が外れるのを防止するコネクタ用抜け止めクリップを提供することを目的とする。
【0007】
【課題を解決するための手段】
この目的を達成するための本発明のコネクタ用抜け止めクリップは、パイプ挿入部の軸方向一方側にホース接続部が形成された流体通過用のコネクタに取り付けられ、前記パイプ挿入部の軸方向他方側端開口からこのパイプ挿入部内に挿入されてスナップ嵌合したパイプ体の抜け止めと、前記ホース接続部に接続されたホースの抜け止めと、を行うコネクタ用抜け止めクリップであって、前記パイプ体は、前記パイプ挿入部内に挿入され、かつ、前記パイプ挿入部の軸方向他方側端開口から軸方向外側に延びている直管部と、この直管部の軸方向他方側に形成された屈曲部と、を一体的に有し、前記ホース接続部はコネクタ軸線に対して屈曲して延びていて、前記コネクタ用抜け止めクリップは、前記コネクタに取り付けられるコネクタ取付部と、前記パイプ体の前記屈曲部側に取り付けられるパイプ体取付部と、前記コネクタ取付部及び前記パイプ体取付部を一体的に連結するパイプ体抜け止めアームと、前記コネクタ取付部と一体的に設けられた、前記ホースに取り付けられるホース取付部と、を備え、前記コネクタ取付部は、前記ホース接続部の延びる方向に外れないように、かつ、前記パイプ挿入部の軸方向について軸方向他方側に移動しないように前記コネクタの外周面に嵌め付けられてこのコネクタに取り付けられ、前記パイプ体取付部は、開口部と、この開口部から押し込まれた前記パイプ体の前記屈曲部側を収容する収容部と、を有し、前記パイプ体の前記屈曲部側の外周面に嵌め付けられてこの屈曲部側に取り付けられ、前記ホース取付部は、前記ホースの外周面にきつく嵌め付けられてこのホースに取り付けられていて、前記コネクタ及び前記パイプ体を、前記コネクタ取付部と前記パイプ体取付部とによって、前記パイプ挿入部の軸方向について軸方向両側から挟み、前記パイプ体が前記コネクタに対し、前記パイプ挿入部の軸方向について軸方向他方側へ移動するのを阻止するために、前記収容部は、前記パイプ体の前記屈曲部側から、前記パイプ挿入部の軸方向について軸方向一方側に外れないように形成され、前記パイプ体取付部の前記開口部は、前記パイプ体の前記直管部及び前記屈曲部に沿った平面と直交する方向側に設けられている、ものである。パイプ体とコネクタとの連結は、パイプ体の直管部の軸方向一方側に環状係合突部を形成し、コネクタのパイプ挿入部内にリテーナーを例えば取外可能に嵌め付けておいて、パイプ体の直管部に形成された環状係合突部がこのリテーナーの軸方向一方側端部とスナップ係合するように、パイプ体をこのリテーナー内に挿入することにより行われる場合が多い。コネクタ用抜け止めクリップは樹脂材料又は金属材料を用いて一体的に形成され、パイプ体は金属製、コネクタは樹脂製又は金属製とすることができる。コネクタとパイプ体との分離は通常、コネクタ用抜け止めクリップをコネクタから取り外し、次に、コネクタから、パイプ体と係合しているリテーナーを相対的に引き出したり、特にコネクタが金属製の場合には、コネクタの軸方向他方側端開口位置の折返部に邪魔されてリテーナーを引き出しにくいため、リリースツールをパイプ体に差し込み、リテーナーとパイプ体との係合を解除してパイプ体のみを引き抜くなどして行なわれる。コネクタは、パイプ挿入部の軸方向一方側にホース接続部が形成されているものであるが、このホース接続部はパイプ挿入部に対して屈曲して延びるように、例えば直角に又はほぼ直角に屈曲して延びるように形成されている。また、パイプ体は直管部の軸方向他方側に、例えば直管部に対して直角に又はほぼ直角に屈曲する屈曲部を有する。パイプ体の屈曲部及びこの屈曲部から直管部と反対側に延びる延長部は屈曲部側を構成する。
【0008】
パイプ体の屈曲部側は、開口部から相対的に押し込まれて収容部に収容される。コネクタ及びパイプ体を、コネクタ取付部とパイプ体取付部とによって軸方向両側から挟むために、収容部は、パイプ体の屈曲部側から軸方向一方側に外れないように形成されていて、コネクタに対するパイプ体の軸方向他方側への移動が阻止される。ホースのホース接続部に沿った移動は、ホースの外周面にきつく嵌め付けられた、ホースの延びる方向に移動できないホース取付部に規制されて阻止される。
【0009】
パイプ体取付部の開口部は、軸方向と直交する方向側に形成され、パイプ体の直管部及び屈曲部に沿った平面又は仮想平面と直交する方向側に設けられている。また、コネクタは通常、軸方向他方側の大径部に小径部を組み合わせることによって構成されている。そこで、コネクタの外周の軸方向一方側に面する段差面を利用し、この段差面に係合して軸方向他方側への移動が阻止されるように、コネクタ取付部をコネクタの外周面に嵌め付けることが好ましい。このように構成することにより、コネクタにコネクタ取付部の軸方向他方側への移動を阻止する特別の係合部を形成しておく必要はなくなる。
【0010】
コネクタ、コネクタのホース接続部に接続されたホース、コネクタのパイプ挿入部に挿入嵌合したパイプ体及びコネクタ用抜け止めクリップは、配管接続構造を構成する。
【0011】
【発明の実施の形態】
以下、本発明の実施の形態を図面を参照して説明する。
【0012】
図1は本発明に係るコネクタ用抜け止めクリップが装着される配管接続部分の断面図、図2は配管接続部分に用いられるリテーナーの斜視図である。
【0013】
自動車のガソリン燃料配管の配管接続部分は、ガラス繊維強化ポリアミド(PA・GF)製のコネクタ1に金属製のパイプ体3を挿入嵌合して構成され、コネクタ1は、パイプ挿入部5の軸方向(コネクタ軸方向)一方側端部に、このパイプ挿入部5に対して屈曲(ここでは直角に屈曲)して、あるいはパイプ挿入部5と角度を有して(ここでは90度の角度を有して、あるいは直交して)一体的に接続形成されたホース接続部7を備えていて、コネクタ1には、パイプ挿入部5のコネクタ軸方向他方側端(後端)からホース接続部7の接続部軸方向(ホース接続部7の軸方向)一方側端(先端)まで貫通する貫通孔9が形成されている。ホース接続部7の外周には比較的柔軟な樹脂製のホース11がきつく嵌め付けられて接続されている。パイプ挿入部5は、ホース接続部7が一体的に接続形成されたコネクタ軸方向一方側の円筒状連絡部13と、周壁の径方向両側に平板部分15、15(図5参照:一方側のみ図示)が対向して形成され、周壁のそれぞれの円弧状部分17、17に係合窓19、19が対向して設けられたコネクタ軸方向他方側の大径の筒状保持部21と、カラー23を介してコネクタ軸方向に並んで内周面に嵌め込まれた一対のOリング25、25を有し、コネクタ軸方向他方側から内周面に樹脂製ブッシュ27が嵌め込まれている、コネクタ軸方向中間の円筒状シール部29と、から構成され、円筒状シール部29は筒状保持部21よりも小径で、円筒状連絡部13よりも大径に構成されている。
【0014】
筒状保持部21内にはPA製のリテーナー31が嵌め込まれていて、このリテーナー31は比較的柔軟であり、弾性変形可能なように構成されている。リテーナー31は、コネクタ軸方向他方側端部の径方向対称位置に、径方向外側に突出した一対の係合爪部33、33が形成されている、周方向両端部35、35間に比較的大きな隙間が設けられた断面C形の本体部37を有し、この本体部37の内面は、概略的には、コネクタ軸方向一方側に向かって縮径する状態に形成されていて、本体部37のコネクタ軸方向一方側端部に形成された係合部39は、概略的には、パイプ体3の外径とほぼ同じ内径状態に形成され、パイプ体3の外周面のコネクタ軸方向一方側に設けられている環状係合突部41よりも小さい内径状態に形成されている。リテーナー31の本体部37のコネクタ軸方向他方側端部には、係合爪部33、33と対応した位置からコネクタ軸方向他方側に向かって径方向外側に傾斜して延びる一対の操作アーム43、43が一体的に設けられていて、それぞれの操作アーム43、43のコネクタ軸方向他方側端部には径方向外側に突出した操作端部45、45が形成されている。本体部37の係合部39には、周方向に延びる係合スリット47、47が対向して形成されていて、このような構成のリテーナー31は、係合爪部33、33が筒状保持部21の係合窓19、19内に入り込み、操作端部45、45が筒状保持部21のコネクタ軸方向他方側端と係合状態となるように、筒状保持部21内に押し込まれて嵌め付けられている。
【0015】
コネクタ1のパイプ挿入部5にコネクタ軸方向他方側端開口49から挿入されて嵌合した相手方のパイプ体3は、環状係合突部41がリテーナー31の本体部37を押し広げて進行し、係合スリット47、47に嵌り込んでスナップ係合するまでコネクタ1に押し込まれて挿入されている。パイプ体3は、環状係合突部41がリテーナー31の本体部37の係合スリット47、47に嵌り込んでスナップ係合することにより、コネクタ1に対して抜け止めされ、また挿入止めされる。すなわち、コネクタ軸方向に位置決めされる。環状係合突部41の突出量は比較的少なく、リテーナー31はこの僅かな突出量の環状係合突部41と係合スリット47、47で係合してパイプ体3の抜け止め作用を行うこととなる。また、係合爪部33の突出量も比較的少なく、リテーナー31は、突出量の少ない係合爪部33で係合窓19に係合してパイプ体3の抜け止め作用を行う。パイプ体3のコネクタ軸方向一方側端は、円筒状シール部29の一対のOリング25、25を越えて円筒状連絡部13内に達し、パイプ体3とコネクタ1のパイプ挿入部5の内周面との間はこのOリング25、25により密封されている。
【0016】
パイプ体3は、リテーナー31の操作アーム43、43の操作端部45、45を外側から押圧して操作アーム43、43の径方向の間隔、したがって係合爪部33、33の径方向の間隔を狭め、係合爪部33、33が係合窓19、19から抜け出た状態としてリテーナー31をコネクタ1から相対的に引き出すと、このリテーナー31とともにコネクタ1から引き抜かれる。
【0017】
パイプ体3は、コネクタ軸方向一方側に環状係合突部41が形成されてコネクタ1のパイプ挿入部5内に挿入され、かつ、パイプ挿入部5のコネクタ軸方向他方側端開口49から軸方向外側に延びている直管部51と、この直管部51のコネクタ軸方向他方側あるいはコネクタ軸方向他方側端に形成された屈曲部53と、この屈曲部53から延びる延長部55と、を一体的に有していて、屈曲部53がホース接続部7の延びる方向と反対側に屈曲し、延長部55がこの屈曲部53からホース接続部7の延びる方向と反対側に延びるようにコネクタ1に連結されるべきものである(図5参照)。屈曲部53はここでは、直管部51に対して直角に又はほぼ直角に屈曲している。
【0018】
図3は本発明に係るコネクタ用抜け止めクリップの斜視図、図4は本発明に係るコネクタ用抜け止めクリップの正面図である。
【0019】
コネクタ用抜け止めクリップ57の材質には、熱可塑性樹脂が広く用いられるが、耐熱性が必要な場合は、PA11、PA12等のポリアミド系樹脂を用いる。また、ポリプロピレン(PP)等のポリプロピレン系樹脂又はポリエステル系樹脂を用いることによって低コスト化を図ることができる。コネクタ用抜け止めクリップ57は、比較的厚肉のプレート体から形成され、コネクタ軸方向(配管接続部分に装着した場合)と直交して延びるアーム状のクリップ主体59と、このクリップ主体59の長さ方向一方側端部から直角に曲がってコネクタ軸方向一方側に短く延びるホース用アーム61と、クリップ主体59の長さ方向他方側端部から直角に曲がってコネクタ軸方向他方側に延びる屈曲部用アーム63と、から一体的に構成されていて、クリップ主体59とホース用アーム61との間には補強リブ65が一体的に形成され、クリップ主体59と屈曲部用アーム63との間にも補強リブ67が一体的に形成されている。屈曲部用アーム63(より正確には、コネクタ軸方向他方側端部を除いた屈曲部用アーム63)、あるいはアーム状のクリップ主体59の長さ方向他方側端部と屈曲部用アーム63とはパイプ体抜け止めアームを構成する。
【0020】
アーム状のクリップ主体59の長さ方向他方側(長さ方向他方側端寄り)には、コネクタ1の円筒状シール部29の外径とほぼ同一の径を有し、かつ、コネクタ1の円筒状シール部29の外径よりも狭い間隔で幅方向一方側(接続部軸方向と直交する方向側、あるいは、ホース11及びパイプ体3に沿った仮想平面と直交する方向側)に開口する、幅方向中央に形成された円筒内面状の収容部69と、この収容部69の両側の開口縁からそれぞれ、幅方向一方側に向かって間隔が広くなるように延びて開口部を形成する一対の開口案内面71、71と、を有するシール部嵌め込み部73が厚さ方向(コネクタ軸方向)に貫通して形成されてコネクタ取付部75が構成されている。シール部嵌め込み部73は、クリップ主体59からコネクタ軸方向一方側に一体的に突出した、シール部嵌め込み部73に対応する内面を備えている延長突出部77によりコネクタ軸方向に延長され、コネクタ軸方向に比較的長く形成されている。コネクタ取付部75は、収容部69が、開口案内面71、71間から相対的に押し込まれるコネクタ1の円筒状シール部29とスナップ係合し、円筒状シール部29を嵌め込んで収容することにより、この円筒状シール部29に取り付けられる。
【0021】
また、ホース用アーム61のコネクタ軸方向一方側端部には、コネクタ軸方向一方側に突出するクランプ部79が一体的に形成されたC形クランプ81(ホース取付部)が構成され、C形クランプ81は、係合内面又は内周面83がホース11の外径よりも小径に形成され、幅方向一方側(接続部軸方向と直交する方向側、あるいは、ホース11及びパイプ体3に沿った仮想平面と直交する方向側)に狭い幅で開口していて、ホース11の外周面にきつく嵌め付けられてホース11に取り付けられる。クランプ部79の幅方向一方側端部は、内側面が開口部を幅方向一方側に向かって広げてホース11を嵌め込みやすくする開口案内面85を形成するように構成されている。
【0022】
さらに、屈曲部用アーム63のコネクタ軸方向他方側端部には、パイプ体3の屈曲部53の外径とほぼ同一の径を有し、かつ、この屈曲部53の外径よりも狭い間隔で幅方向一方側(コネクタ軸方向と直交する方向側、あるいは、ホース11及びパイプ体3に沿った仮想平面と直交する方向側)に開口する、幅方向中央に形成された円筒内面状の収容部87と、この収容部87の両側の開口縁からそれぞれ、幅方向一方側に向かって間隔が広くなるように延びて開口部を形成する一対の開口案内面89、89と、を有する屈曲部嵌め込み部91が厚さ方向(接続部軸方向)に貫通して形成されてパイプ体取付部93が構成されている。パイプ体取付部93は、収容部87が、開口案内面89、89間から相対的に押し込まれるパイプ体3の屈曲部53とスナップ係合し、屈曲部53の終端部を嵌め込んで収容することにより、この屈曲部53に接続される。
【0023】
図5はコネクタ用抜け止めクリップ57を配管接続部分に装着した状態を示す斜視図、図6はコネクタ用抜け止めクリップ57を配管接続部分に装着した状態を示す正面図である。
【0024】
コネクタ用抜け止めクリップ57は、コネクタ1にパイプ体3を挿入して嵌合してから配管接続部分に装着することができるように構成されている。コネクタ用抜け止めクリップ57を配管接続部分に装着するには、例えば、まず屈曲部嵌め込み部91の収容部87内にパイプ体3の屈曲部53をスナップ係合させて嵌め込み、パイプ体取付部93を屈曲部53に接続し、かつ、シール部嵌め込み部73の収容部69内にコネクタ1の円筒状シール部29をスナップ係合させて嵌め込み、コネクタ取付部75をコネクタ1に取り付ける。パイプ体取付部93とコネクタ取付部75とのコネクタ軸方向の間隔、あるいは屈曲部用アーム63のコネクタ軸方向の長さは、パイプ体取付部93を屈曲部53の終端部に取り付けたときに、コネクタ取付部75の軸方向他方側端あるいはアーム状のクリップ主体59の裏面が、筒状保持部21と円筒状シール部29との間の、軸方向一方側に面する環状段差面95に軸方向一方側から係合するように設定されている。次ぎに、C形クランプ81の係合内面83にホース11をスナップ係合させてC形クランプ81内にホース11を嵌め込み、C形クランプ81をホース11に取り付ける。パイプ体取付部93の収容部87、コネクタ取付部75の収容部69及びC形クランプ81は同一方向に開口しているので、コネクタ用抜け止めクリップ57の配管接続部分への装着はワンタッチ的に容易に行うことができる。
【0025】
コネクタ取付部75は筒状保持部21と円筒状シール部29との間の環状段差面95に軸方向一方側から係合しているので、軸方向他方側に移動できない状態でコネクタ1の外周面に嵌め付けられている。また、屈曲部嵌め込み部91の収容部87は、コネクタ軸方向他方側に開口しているわけではないので、パイプ体取付部93はパイプ体3の屈曲部53の外周面に、パイプ体3が軸方向他方側に外れないように、あるいは、パイプ体3から軸方向一方側に外れないように嵌め付けられている。したがって、パイプ体3はコネクタ1から抜ける方向に移動することができない。そして、C形クランプ81はホース11を締め付けるようにこのホース11の外周面に嵌め付けられている。また、シール部嵌め込み部73の収容部69は、接続部軸方向他方側に開口しているわけではないので、コネクタ取付部75はコネクタ1の外周面に接続部軸方向一方側に外れないように嵌め付けられている。したがって、ホース11はホース接続部7から外れる方向に移動できない。
【0026】
【発明の効果】
以上説明したように、本発明のコネクタ用抜け止めクリップを用いれば、安価に製造できる一体的に形成された一つのクリップを配管接続部分に取り付けることで、コネクタからパイプ体が外れることも、ホースが外れることも同時に防止することができる。
【図面の簡単な説明】
【図1】本発明に係るコネクタ用抜け止めクリップが装着される配管接続部分の断面図である。
【図2】配管接続部分に用いられるリテーナーの斜視図である。
【図3】本発明に係るコネクタ用抜け止めクリップの斜視図である。
【図4】本発明に係るコネクタ用抜け止めクリップの正面図である。
【図5】コネクタ用抜け止めクリップを配管接続部分に装着した状態を示す斜視図である。
【図6】コネクタ用抜け止めクリップを配管接続部分に装着した状態を示す正面図である。
【符号の説明】
1 コネクタ
3 パイプ体
5 パイプ挿入部
7 ホース接続部
49 軸方向他方側端開口
51 直管部
53 屈曲部
55 延長部
57 コネクタ用抜け止めクリップ
63 屈曲部用アーム(パイプ体抜け止めアーム)
75 コネクタ取付部
81 C形クランプ(ホース取付部)
93 パイプ体取付部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connector retaining clip for preventing a pipe body and a hose fitted to a connector used for connecting a gasoline fuel pipe of an automobile, for example, from coming off the connector.
[0002]
[Prior art]
For the connection between the connector used for connecting fluid piping and the pipe body, for example, an annular engagement protrusion is formed on one axial side of the outer peripheral surface of the pipe body, and a retainer is fitted in the pipe insertion portion of the connector. The pipe body is inserted into the retainer so that the annular engagement protrusion snap-engages with the one axial end of the retainer, thereby preventing the pipe body and the connector from coming off. Is called. However, the retainer is usually made of a relatively soft material such as an elastically deformable resin. When a high-pressure fluid flows in the fluid piping and a large pulling force acts on the connector and the pipe, the retainer is deformed. As a result, the pipe body may come off the retainer. Therefore, it is preferable to configure a pipe body retaining structure that reinforces the pipe body so that the pipe body does not come off the connector at the connector connection portion.
[0003]
In addition, the outer peripheral surface of the hose connection part of the connector is formed with a concave and convex shape, and the hose is tightly fitted and connected to this hose connection part, but the hose is relatively flexible In some cases, it is not always possible to ensure a sufficient hose retaining function simply by engaging with the uneven retaining shape. Therefore, it is preferable to form a hose retaining structure that reinforces the hose so that it does not come off from the connector.
[0004]
[Problems to be solved by the invention]
Incidentally, Japanese Utility Model Laid-Open No. 62-86488 relates to a structure for preventing a water faucet and a joint from coming off, but a band body is hung on the faucet plug portion of the faucet, and both ends of the belt body are projected to the joint. A retaining structure connected to the engaging portion formed in this manner is described. However, such a retaining structure is provided between the connector and the pipe body in which the protruding portion such as the faucet plug portion protruding in the direction intersecting the axis of the bending portion or the extending portion extending from the bending portion is not formed. It cannot be applied.
[0005]
Japanese Utility Model Laid-Open No. 61-114190 describes a structure for preventing a pipe body and a hose from coming off using a bent portion of the pipe body. However, such a hose retaining structure is used in a connection configuration in which the hose extends orthogonally or substantially orthogonally to the bent part of the pipe body or the extension part extending from the bent part. It is difficult to apply to a connection form that bends and extends with the pipe portion.
[0006]
Therefore, the present invention is used for a connector where a hose connection part is bent with respect to a connector axis and a pipe body having a bending part, and the hose and the pipe body are prevented from coming off. The purpose is to provide a stop clip.
[0007]
[Means for Solving the Problems]
To achieve this object, the connector retaining clip of the present invention is attached to a fluid passage connector having a hose connection portion formed on one side in the axial direction of the pipe insertion portion, and the other axial direction of the pipe insertion portion. A retaining clip for a connector that prevents a pipe body that is inserted into the pipe insertion portion from the side end opening and snap-fitted, and that prevents a hose connected to the hose connection portion from coming off. The body is inserted into the pipe insertion part, and is formed on the other side in the axial direction of the straight pipe part and the straight pipe part extending outward in the axial direction from the axially other side end opening of the pipe insertion part. The hose connection portion is bent and extended with respect to the connector axis, and the connector retaining clip is attached to the connector. A pipe body attaching portion attached to the bent portion side of the pipe body, a pipe body retaining arm integrally connecting the connector attaching portion and the pipe body attaching portion, and integrally with the connector attaching portion. A hose attachment portion attached to the hose, and the connector attachment portion does not come off in a direction in which the hose connection portion extends, and the other side in the axial direction with respect to the axial direction of the pipe insertion portion. The pipe body attachment portion accommodates the opening portion and the bent portion side of the pipe body pushed from the opening portion. A fitting portion, and is fitted to the outer peripheral surface of the pipe body on the bent portion side and attached to the bent portion side, and the hose attachment portion is an outer periphery of the hose. It is tightly fitted and attached to this hose, and the connector and the pipe body are sandwiched from both sides in the axial direction in the axial direction of the pipe insertion part by the connector attachment part and the pipe body attachment part, In order to prevent the pipe body from moving to the other axial side in the axial direction of the pipe insertion portion with respect to the connector, the housing portion is provided on the pipe insertion portion from the bent portion side of the pipe body. It is formed so that it does not deviate to one side in the axial direction with respect to the axial direction, and the opening of the pipe body mounting portion is provided on the direction side perpendicular to the plane along the straight pipe portion and the bent portion of the pipe body. It is a thing. The pipe body and the connector are connected by forming an annular engagement protrusion on one axial side of the straight pipe portion of the pipe body, and a retainer is detachably fitted in the pipe insertion portion of the connector. In many cases, the pipe body is inserted into the retainer so that the annular engagement protrusion formed on the straight pipe portion of the body snap-engages with the one axial end of the retainer. The connector retaining clip is integrally formed using a resin material or a metal material, the pipe body may be made of metal, and the connector may be made of resin or metal. Separation of the connector from the pipe body is usually done by removing the retaining clip for the connector from the connector and then pulling the retainer engaged with the pipe body relatively from the connector, especially when the connector is made of metal. Since it is difficult to pull out the retainer because it is difficult to pull out the retainer because it is obstructed by the folded part at the opening position of the other end of the connector in the axial direction, the release tool is inserted into the pipe body, the engagement between the retainer and the pipe body is released, and only the pipe body is pulled It is done. The connector has a hose connection part formed on one side in the axial direction of the pipe insertion part. The hose connection part is bent and extended with respect to the pipe insertion part, for example, at a right angle or substantially at a right angle. It is formed to bend and extend. Moreover, a pipe body has the bending part which bends on the other side of the axial direction of a straight pipe part, for example at right angle with respect to a straight pipe part, or substantially right angle. The bent portion of the pipe body and the extended portion extending from the bent portion to the side opposite to the straight pipe portion constitute the bent portion side.
[0008]
The bent portion side of the pipe body is relatively pushed from the opening and is accommodated in the accommodating portion. In order to sandwich the connector and the pipe body from both sides in the axial direction by the connector mounting portion and the pipe body mounting portion, the accommodating portion is formed so as not to be detached from the bent side of the pipe body to the one side in the axial direction. The pipe body is prevented from moving to the other side in the axial direction. Movement along the hose connection portion of the hose is restricted and prevented by the hose attachment portion that is tightly fitted to the outer peripheral surface of the hose and cannot move in the direction in which the hose extends.
[0009]
The opening of the pipe body attachment portion is formed on the direction side perpendicular to the axial direction, and is provided on the direction side perpendicular to the plane or virtual plane along the straight pipe portion and the bent portion of the pipe body. Moreover, the connector is normally comprised by combining a small diameter part with the large diameter part of the other side of an axial direction. Therefore, a stepped surface facing one side in the axial direction of the outer periphery of the connector is used, and the connector mounting portion is placed on the outer peripheral surface of the connector so as to be engaged with this stepped surface and prevented from moving to the other side in the axial direction. It is preferable to fit. With this configuration, it is not necessary to form a special engagement portion for preventing the connector mounting portion from moving to the other side in the axial direction on the connector.
[0010]
The connector, the hose connected to the hose connection part of the connector, the pipe body inserted and fitted into the pipe insertion part of the connector, and the connector retaining clip constitute a pipe connection structure.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0012]
FIG. 1 is a cross-sectional view of a pipe connection portion to which a connector retaining clip according to the present invention is attached, and FIG. 2 is a perspective view of a retainer used in the pipe connection portion.
[0013]
The connecting portion of the automobile gasoline fuel pipe is configured by inserting and fitting a metal pipe body 3 into a glass fiber reinforced polyamide (PA / GF) connector 1, and the connector 1 is a shaft of the pipe insertion portion 5. Direction (connector axial direction), bent at one side end with respect to the pipe insertion portion 5 (bent at a right angle here) or at an angle with the pipe insertion portion 5 (90 degrees here) And hose connection portion 7 formed integrally with the hose connection portion 7 from the other end (rear end) of the pipe insertion portion 5 in the connector axial direction. A through hole 9 that penetrates to one end (tip) of the connecting portion in the axial direction (the axial direction of the hose connecting portion 7) is formed. A relatively flexible resin hose 11 is tightly fitted and connected to the outer periphery of the hose connection portion 7. The pipe insertion portion 5 includes a cylindrical connecting portion 13 on one side in the connector axial direction in which the hose connection portion 7 is integrally connected, and flat plate portions 15 and 15 on both sides in the radial direction of the peripheral wall (see FIG. 5: only one side). A large-diameter cylindrical holding portion 21 on the other side in the connector axial direction in which the engagement windows 19 and 19 are provided so as to be opposed to the respective arc-shaped portions 17 and 17 of the peripheral wall. Connector shaft having a pair of O-rings 25 and 25 fitted in the inner peripheral surface side by side in the connector axial direction via 23, and a resin bush 27 fitted in the inner peripheral surface from the other side in the connector axial direction The cylindrical seal portion 29 is configured to be smaller in diameter than the cylindrical holding portion 21 and larger in diameter than the cylindrical connecting portion 13.
[0014]
A retainer 31 made of PA is fitted in the cylindrical holding portion 21. The retainer 31 is relatively flexible and configured to be elastically deformable. The retainer 31 has a pair of engaging claw portions 33 and 33 projecting radially outward at a radially symmetrical position of the other end portion in the connector axial direction. A main body portion 37 having a C-shaped cross section provided with a large gap is provided, and the inner surface of the main body portion 37 is generally formed in a state of decreasing in diameter toward one side in the connector axial direction. 37, the engaging portion 39 formed at one end in the connector axial direction is generally formed in an inner diameter substantially the same as the outer diameter of the pipe body 3, and one of the outer circumferential surfaces of the pipe body 3 in the connector axial direction. It is formed in an inner diameter state smaller than the annular engagement protrusion 41 provided on the side. A pair of operation arms 43 extending from the position corresponding to the engaging claws 33 and 33 toward the other side in the connector axial direction and inclined radially outward from the end on the other side in the connector axial direction of the main body 37 of the retainer 31. , 43 are integrally provided, and operation end portions 45, 45 projecting radially outward are formed at the other end portion in the connector axial direction of the operation arms 43, 43, respectively. Engagement slits 47 and 47 extending in the circumferential direction are formed in the engagement part 39 of the main body part 37 so as to face each other, and the retainer 31 having such a configuration holds the engagement claw parts 33 and 33 in a cylindrical shape. It is pushed into the cylindrical holding portion 21 so that it enters the engagement windows 19 and 19 of the portion 21 and the operation end portions 45 and 45 are engaged with the other end of the cylindrical holding portion 21 in the connector axial direction. Is fitted.
[0015]
The mating pipe body 3 inserted and fitted into the pipe insertion part 5 of the connector 1 from the other end opening 49 in the axial direction of the connector advances with the annular engagement protrusion 41 expanding the body part 37 of the retainer 31, It is pushed into the connector 1 until it is inserted into the engagement slits 47 and snap-engaged. The pipe body 3 is prevented from being detached from and inserted into the connector 1 by snapping the annular engagement projection 41 into the engagement slits 47 and 47 of the main body 37 of the retainer 31. . That is, it is positioned in the connector axial direction. The projecting amount of the annular engaging projection 41 is relatively small, and the retainer 31 engages with the slightly projecting amount of the annular engaging projecting portion 41 by the engaging slits 47 and 47 to prevent the pipe body 3 from coming off. It will be. In addition, the protruding amount of the engaging claw 33 is relatively small, and the retainer 31 engages the engaging window 19 with the engaging claw 33 having a small protruding amount to prevent the pipe body 3 from coming off. One end of the pipe body 3 in the axial direction of the connector passes through the pair of O-rings 25, 25 of the cylindrical seal portion 29 and reaches the inside of the cylindrical connecting portion 13, and the inside of the pipe insertion portion 5 of the pipe body 3 and the connector 1. The peripheral surface is sealed by the O-rings 25 and 25.
[0016]
The pipe body 3 presses the operation ends 45 and 45 of the operation arms 43 and 43 of the retainer 31 from the outside, and the radial distance between the operation arms 43 and 43, and thus the radial distance between the engagement claws 33 and 33. When the retainer 31 is relatively pulled out from the connector 1 in a state where the engaging claws 33 and 33 are pulled out from the engaging windows 19 and 19, the retainer 31 is pulled out from the connector 1 together with the retainer 31.
[0017]
The pipe body 3 has an annular engagement protrusion 41 formed on one side in the connector axial direction and is inserted into the pipe insertion portion 5 of the connector 1. The pipe body 3 is pivoted from the other end opening 49 in the connector axial direction of the pipe insertion portion 5. A straight pipe portion 51 extending outward in the direction, a bent portion 53 formed at the other end of the straight pipe portion 51 in the connector axial direction or the other end of the connector axial direction, an extension portion 55 extending from the bent portion 53, So that the bent portion 53 bends in the direction opposite to the direction in which the hose connection portion 7 extends, and the extension portion 55 extends from the bent portion 53 in the direction opposite to the direction in which the hose connection portion 7 extends. It should be connected to the connector 1 (see FIG. 5). Here, the bent portion 53 is bent at a right angle or a substantially right angle with respect to the straight pipe portion 51.
[0018]
FIG. 3 is a perspective view of a retaining clip for a connector according to the present invention, and FIG. 4 is a front view of the retaining clip for a connector according to the present invention.
[0019]
A thermoplastic resin is widely used as the material of the connector retaining clip 57, but if heat resistance is required, a polyamide-based resin such as PA11 or PA12 is used. Moreover, cost reduction can be achieved by using a polypropylene resin such as polypropylene (PP) or a polyester resin. The connector retaining clip 57 is formed of a relatively thick plate body, and extends in a direction perpendicular to the connector axial direction (when attached to a pipe connection portion). A hose arm 61 that bends at right angles from one end in the length direction and extends short to one side in the connector axial direction, and a bent portion that bends at right angles from the other end in the length direction of the clip main body 59 and extends to the other side in the connector axial direction And a reinforcing rib 65 formed integrally between the clip main body 59 and the hose arm 61, and between the clip main body 59 and the bending portion arm 63. Also, the reinforcing rib 67 is integrally formed. The bent portion arm 63 (more precisely, the bent portion arm 63 excluding the other end portion in the connector axial direction) or the other end portion in the length direction of the arm-shaped clip main body 59 and the bent portion arm 63, Constitutes a pipe body retaining arm.
[0020]
The other side of the arm-shaped clip main body 59 in the length direction (near the other end in the length direction) has a diameter substantially the same as the outer diameter of the cylindrical seal portion 29 of the connector 1 and the cylinder of the connector 1. Open in the width direction one side (direction side orthogonal to the connecting portion axial direction, or direction side orthogonal to the virtual plane along the hose 11 and the pipe body 3) at an interval narrower than the outer diameter of the cylindrical seal portion 29, A cylindrical inner surface containing portion 69 formed at the center in the width direction and a pair of openings extending from the opening edges on both sides of the containing portion 69 so as to widen the gap toward one side in the width direction. A connector fitting portion 75 is configured by forming a seal portion fitting portion 73 having opening guide surfaces 71 and 71 penetrating in the thickness direction (connector axial direction). The seal portion fitting portion 73 is extended in the connector axial direction by an extension protrusion 77 having an inner surface corresponding to the seal portion fitting portion 73 integrally protruding from the clip main body 59 to one side in the connector axial direction. It is formed relatively long in the direction. The connector mounting portion 75 has the housing portion 69 snap-engaged with the cylindrical seal portion 29 of the connector 1 that is relatively pushed from between the opening guide surfaces 71 and 71, and the cylindrical seal portion 29 is fitted and accommodated. Is attached to the cylindrical seal portion 29.
[0021]
In addition, a C-shaped clamp 81 (hose mounting portion) is integrally formed with a clamp portion 79 protruding to one side in the connector axial direction at the one end portion in the connector axial direction of the hose arm 61. The clamp 81 has an engaging inner surface or an inner peripheral surface 83 formed to have a smaller diameter than the outer diameter of the hose 11, and one side in the width direction (the direction side orthogonal to the connecting portion axial direction, or along the hose 11 and the pipe body 3. It is opened with a narrow width on the direction perpendicular to the virtual plane, and is tightly fitted to the outer peripheral surface of the hose 11 and attached to the hose 11. One end portion in the width direction of the clamp portion 79 is configured such that the inner side surface forms an opening guide surface 85 that widens the opening portion toward the one side in the width direction so that the hose 11 can be easily fitted.
[0022]
Further, the other end of the bent portion arm 63 in the connector axial direction has a diameter substantially the same as the outer diameter of the bent portion 53 of the pipe body 3 and is narrower than the outer diameter of the bent portion 53. The cylindrical inner surface formed at the center in the width direction is opened on one side in the width direction (the direction side orthogonal to the connector axial direction or the direction side orthogonal to the virtual plane along the hose 11 and the pipe body 3). A bent portion having a portion 87 and a pair of opening guide surfaces 89 and 89 extending from the opening edges on both sides of the accommodating portion 87 so as to be widened toward one side in the width direction to form an opening. The fitting portion 91 is formed by penetrating the fitting portion 91 in the thickness direction (connecting portion axial direction). In the pipe body attaching portion 93, the accommodating portion 87 snap-engages with the bent portion 53 of the pipe body 3 that is relatively pushed from between the opening guide surfaces 89 and 89, and the end portion of the bent portion 53 is fitted and accommodated. Thus, the bent portion 53 is connected.
[0023]
FIG. 5 is a perspective view showing a state where the connector retaining clip 57 is attached to the pipe connecting portion, and FIG. 6 is a front view showing a state where the connector retaining clip 57 is attached to the pipe connecting portion.
[0024]
The connector retaining clip 57 is configured so that the pipe body 3 can be inserted into and fitted into the connector 1 and then attached to the pipe connection portion. In order to attach the connector retaining clip 57 to the pipe connection portion, for example, first, the bent portion 53 of the pipe body 3 is snap-fitted into the accommodating portion 87 of the bent portion fitting portion 91 and then the pipe body attaching portion 93 is fitted. Is connected to the bent portion 53, and the cylindrical seal portion 29 of the connector 1 is snap-engaged into the accommodating portion 69 of the seal portion fitting portion 73, and the connector mounting portion 75 is attached to the connector 1. The distance between the pipe body attachment portion 93 and the connector attachment portion 75 in the connector axial direction or the length of the bending portion arm 63 in the connector axial direction is determined when the pipe body attachment portion 93 is attached to the terminal end of the bending portion 53. The other end of the connector mounting portion 75 in the axial direction or the back surface of the arm-shaped clip main body 59 is formed on the annular step surface 95 facing the one side in the axial direction between the cylindrical holding portion 21 and the cylindrical seal portion 29. It is set to engage from one side in the axial direction. Next, the hose 11 is snap-engaged with the engagement inner surface 83 of the C-shaped clamp 81, the hose 11 is fitted into the C-shaped clamp 81, and the C-shaped clamp 81 is attached to the hose 11. Since the accommodating portion 87 of the pipe body attaching portion 93, the accommodating portion 69 of the connector attaching portion 75, and the C-shaped clamp 81 are opened in the same direction, the connector retaining clip 57 can be attached to the pipe connecting portion with one touch. It can be done easily.
[0025]
Since the connector mounting portion 75 is engaged with the annular step surface 95 between the cylindrical holding portion 21 and the cylindrical seal portion 29 from the one side in the axial direction, the outer periphery of the connector 1 cannot be moved to the other side in the axial direction. It is fitted to the surface. Further, since the accommodating portion 87 of the bent portion fitting portion 91 is not open to the other side in the connector axial direction, the pipe body attaching portion 93 is disposed on the outer peripheral surface of the bent portion 53 of the pipe body 3. The pipe body 3 is fitted so as not to be disengaged from the other side in the axial direction, or from being disengaged from the pipe body 3 to one side in the axial direction. Therefore, the pipe body 3 cannot move in the direction in which it is removed from the connector 1. The C-shaped clamp 81 is fitted on the outer peripheral surface of the hose 11 so as to tighten the hose 11. Further, since the accommodating portion 69 of the seal portion fitting portion 73 is not open on the other side in the connecting portion axial direction, the connector mounting portion 75 does not come off on the outer peripheral surface of the connector 1 on the one side in the connecting portion axial direction. It is attached to. Therefore, the hose 11 cannot move in a direction away from the hose connection portion 7.
[0026]
【The invention's effect】
As described above, if the retaining clip for a connector of the present invention is used, it is possible to remove the pipe body from the connector by attaching one integrally formed clip that can be manufactured at low cost to the pipe connecting portion. Can be prevented at the same time.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a pipe connecting portion to which a connector retaining clip according to the present invention is attached.
FIG. 2 is a perspective view of a retainer used for a pipe connection portion.
FIG. 3 is a perspective view of a retaining clip for a connector according to the present invention.
FIG. 4 is a front view of a connector retaining clip according to the present invention.
FIG. 5 is a perspective view showing a state in which a connector retaining clip is attached to a pipe connection portion.
FIG. 6 is a front view showing a state where a connector retaining clip is attached to a pipe connection portion.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Connector 3 Pipe body 5 Pipe insertion part 7 Hose connection part 49 Axial direction other side end opening 51 Straight pipe part 53 Bending part 55 Extension part 57 Retaining clip 63 for connectors Bending part arm (pipe body retaining arm)
75 Connector mounting part 81 C type clamp (hose mounting part)
93 Pipe body attachment

Claims (1)

パイプ挿入部の軸方向一方側にホース接続部が形成された流体通過用のコネクタに取り付けられ、前記パイプ挿入部の軸方向他方側端開口からこのパイプ挿入部内に挿入されてスナップ嵌合したパイプ体の抜け止めと、前記ホース接続部に接続されたホースの抜け止めと、を行うコネクタ用抜け止めクリップであって、
前記パイプ体は、前記パイプ挿入部内に挿入され、かつ、前記パイプ挿入部の軸方向他方側端開口から軸方向外側に延びている直管部と、この直管部の軸方向他方側に形成された屈曲部と、を一体的に有し、
前記ホース接続部はコネクタ軸線に対して屈曲して延びていて、
前記コネクタ用抜け止めクリップは、
前記コネクタに取り付けられるコネクタ取付部と、前記パイプ体の前記屈曲部側に取り付けられるパイプ体取付部と、前記コネクタ取付部及び前記パイプ体取付部を一体的に連結するパイプ体抜け止めアームと、前記コネクタ取付部と一体的に設けられた、前記ホースに取り付けられるホース取付部と、を備え、
前記コネクタ取付部は、前記ホース接続部の延びる方向に外れないように、かつ、前記パイプ挿入部の軸方向について軸方向他方側に移動しないように前記コネクタの外周面に嵌め付けられてこのコネクタに取り付けられ、前記パイプ体取付部は、開口部と、この開口部から押し込まれた前記パイプ体の前記屈曲部側を収容する収容部と、を有し、前記パイプ体の前記屈曲部側の外周面に嵌め付けられてこの屈曲部側に取り付けられ、前記ホース取付部は、前記ホースの外周面にきつく嵌め付けられてこのホースに取り付けられていて、
前記コネクタ及び前記パイプ体を、前記コネクタ取付部と前記パイプ体取付部とによって前記パイプ挿入部の軸方向について軸方向両側から挟み、前記パイプ体が前記コネクタに対し、前記パイプ挿入部の軸方向について軸方向他方側に移動するのを阻止するために、前記収容部は、前記パイプ体の前記屈曲部側から前記パイプ挿入部の軸方向について軸方向一方側に外れないように形成され、
前記パイプ体取付部の前記開口部は、前記パイプ体の前記直管部及び前記屈曲部に沿った平面と直交する方向側に設けられている、ことを特徴とするコネクタ用抜け止めクリップ。
A pipe that is attached to a fluid passage connector in which a hose connection portion is formed on one side in the axial direction of the pipe insertion portion, and that is inserted into the pipe insertion portion from the other axial end opening of the pipe insertion portion and snap-fitted. A connector retaining clip that performs retaining of the body and retaining of the hose connected to the hose connecting portion,
The pipe body is formed in a straight pipe portion that is inserted into the pipe insertion portion and extends outward in the axial direction from an opening on the other axial end side of the pipe insertion portion, and on the other axial side of the straight pipe portion. And a bent portion integrally formed,
The hose connection portion is bent and extended with respect to the connector axis,
The connector retaining clip is
A connector attachment part attached to the connector, a pipe body attachment part attached to the bent part side of the pipe body, a pipe body retaining arm integrally connecting the connector attachment part and the pipe body attachment part, A hose attachment portion attached to the hose provided integrally with the connector attachment portion, and
The connector mounting portion is fitted to the outer peripheral surface of the connector so as not to be disengaged in the extending direction of the hose connecting portion and not to move to the other side in the axial direction with respect to the axial direction of the pipe insertion portion. The pipe body mounting portion includes an opening, and an accommodating portion that accommodates the bent portion side of the pipe body pushed through the opening, and on the bent portion side of the pipe body. It is fitted to the outer peripheral surface and attached to the bent portion side, and the hose attachment portion is tightly fitted to the outer peripheral surface of the hose and attached to the hose,
The connector and the pipe body are sandwiched from both sides in the axial direction of the pipe insertion portion by the connector attachment portion and the pipe body attachment portion, and the pipe body is in the axial direction of the pipe insertion portion with respect to the connector. In order to prevent the pipe from moving to the other side in the axial direction, the accommodating portion is formed so as not to be disengaged from the bent portion side of the pipe body to the one axial side in the axial direction of the pipe insertion portion,
The connector retaining clip, wherein the opening of the pipe body attaching portion is provided on a side of the pipe body in a direction orthogonal to a plane along the straight pipe portion and the bent portion.
JP2002096014A 2002-03-29 2002-03-29 Retaining clip for connector Expired - Fee Related JP3674038B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002096014A JP3674038B2 (en) 2002-03-29 2002-03-29 Retaining clip for connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002096014A JP3674038B2 (en) 2002-03-29 2002-03-29 Retaining clip for connector

Publications (2)

Publication Number Publication Date
JP2003294183A JP2003294183A (en) 2003-10-15
JP3674038B2 true JP3674038B2 (en) 2005-07-20

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Family Applications (1)

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Also Published As

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