JP4257983B2

JP4257983B2 - Connector for small diameter pipe connection

Info

Publication number: JP4257983B2
Application number: JP31372698A
Authority: JP
Inventors: 一美深谷; 幸則杉山; 務竹内; 昌章秋山
Original assignee: Usui Co Ltd
Current assignee: Usui Co Ltd
Priority date: 1998-06-01
Filing date: 1998-11-04
Publication date: 2009-04-30
Anticipated expiration: 2018-11-04
Also published as: JP2000081185A

Description

【０００１】
【発明の属する技術分野】
本発明は、一般に自動車あるいは各種の機械、装置などに給油、給気の供給路として配設される管径、太さ４０ｍｍ程度以下の比較的細径からなる金属管あるいは樹脂チューブ（以下単に配管という）の接続用コネクターに関し、さらに詳細には配管との接続の前後を問わず常時防塵効果を有するキャップ部材を装着し、かつ接続後の配管を必要に応じて容易に解放し得る細径配管接続用コネクターに関するものである。
【０００２】
【従来の技術】
従来、細径配管接続用のクイック・コネクターとしては各種のものが提案され実用に供されているが、その一例としては、例えば図１７に示すように先端側の連結筒壁２２の流通孔２４に連って拡径した小径室２３−１と大径室２３とを貫設してなるコネクター本体２１の該小径室２３−１部に、シールリング部材２６とブッシュ部材２７とを内装せしめ、かつ大径室２３の周壁に穿設した係合孔２１−１の後端周部のなす掛支壁２１−２の該係合孔２１−１の縁部に、軸芯中央孔の周壁の組付け方向の前部にあって内方に傾斜する複数の爪壁２５を有する別体のソケット体２８を該爪壁２５のなす基部の肩部２５−１を係合した状態をもって、その後端側の環状周壁２５−２部を挿着して内装せしめ、内部に組込まれた配管Ｐ_０の環状膨出壁Ｐ_０′部を前記爪壁２５により係圧せしめて接続するように構成されていた。
【０００３】
また他の例としては本出願人が提案した特開平９−２８０４５１号（特願平８−１２１０６３号）公報に示されるように、軸芯内部に、先端側の連結筒壁の流通孔に連って拡径した小径室と大径室とを貫設してなるコネクター本体の該小径室部に、シールリング部材とブッシュ部材とを内装せしめ、かつ前記大径室の周壁のなす対向部位に設けた切欠き窓部分に、それぞれ前方に突設してその中間付近を内方に傾斜した屈曲部による爪壁となして内方に付勢された弾発壁と、該弾発壁の外端部より前記コネクター本体の周壁の外側に延長する突壁とを有するソケット部材を前記コネクター本体と一体に設け、接続される配管側の環状膨出壁部に前記弾発壁を係圧せしめて接続するよう構成されていた。
なお前記公開公報では、前記小径室の周壁の外側に凸起部を設けて、左右回動自在となす筒環状の解放部材を該凸起部に係着して、該解放部材の後端側の表面にカム壁を有して前記突壁あるいはコネクター本体の外周面との相互の対向面にあって配管の接続時およびその解放時に、該解放部材の回動に伴ってその回動位置を一定にセットする一対の係止手段を設けて前記突壁を拡閉し、爪壁での係圧、解除を行うように構成して前記配管を接続状態から容易に解放状態にできるよう構成してある。
【０００４】
しかしながら、いずれの従来例においても配管接続前のコネクター本体の運搬時や保管時などにコネクター本体の後端側や係合孔もしくは切欠き窓部分より塵埃やごみなどが侵入してコネクター本体内部に残留し、接続すべき配管を挿着して接続が完了後にソケット体の爪壁と配管の環状膨出壁との間の係圧部において配管側の表面処理層を摩耗させたり、さらにはシールリング部材と小径室の内周面あるいは配管の外周面との間に侵入した塵埃やごみなどが介在してそのシール性を阻害するという問題があった。さらに侵入した塵埃やごみなどが配管接続後に内部を流れる流体により下流側配管部品に移動して閉塞やカジリによる機能障害を起こすという問題もあった。
【０００５】
かかる問題の発生を防止するため図１８、図１９のようなキャップ部材が提案された。このキャップ部材４１を前記した従来の技術のうち後者に類似した構成を有するコネクター本体３１に用いた例で説明すると、前記キャップ部材４１は有底円筒体４２と、該有底円筒体４２の外方に径方向に間隔をおいて設けられた外側円筒体４３と、前記有底円筒体４２の開放端部から径方向で外方に延長して外側円筒体４３の端面と一体となった端壁４４とからなるもので、前記外側円筒体４３はコネクター本体３１の周壁に形成された係合孔あるいは切欠き窓３１−１部分を囲繞して、該周壁の外周部に設けられた段部３１−２と係合する寸法を有し、一方有底円筒体４２はコネクター本体３１の後端部から小径室に内装されたブッシュ部材３７とシールリング部材３６まで延長し、その外周面が該シールリング部材３６によりシールされるよう構成され、コネクター本体３１の後端側より圧入されるものである。
【０００６】
【発明が解決しようとする課題】
上記したキャップ部材は、配管接続前のコネクター本体の運搬時や保管時などに塵埃やごみなどの侵入の防止に有効であるものの配管の接続時にはコネクター本体の後端側より取外す必要があり、量産体制下ではこの作業に手間が掛り、作業性が劣り、また配管接続後においては前記キャップ部材が取外されたままで防塵手段がないため係合孔部分あるいは切欠き窓部分やコネクター本体の後端側よりコネクター本体内部に塵埃やごみが侵入し、ソケット部材の爪壁と配管の環状膨出壁との間の係圧部における配管側の表面処理層の摩耗およびシールリング部材と小径室の内周面あるいは配管の外周面との間のシール性が劣化するとともに、下流側配管部品の閉塞やカジリなどによる機能障害が発生するためその改善が求められていた。
【０００７】
本発明はかかる従来技術の問題点に鑑みなされたものであって、配管との接続の前後を問わず常に防塵効果を有し、かつ配管の接続作業には何らの支障もなく接続でき、さらに必要に応じて配管を容易に解放できかつ配管の接続状態の適否を目視により確認し得る細径配管接続用コネクターを提供することを目的とするものである。
【０００８】
【課題を解決するための手段】
上記目的を達成するため本発明の第１の実施態様は、軸芯内部に、先端側の連結筒壁の流通孔に連なって拡径した小径室と大径室とを貫設してなるコネクター本体の該小径室部に、シールリング部材とブッシュ部材とを内装せしめ、かつ前記大径室の周壁のなす対向部位に設けられた係合孔部分あるいは切欠き窓部分に、それぞれ爪壁となして内方へ付勢された弾発壁を有するソケット部材を前記コネクター本体と別体あるいは一体に設け、前記弾発壁を接続される配管側の環状膨出壁部に係圧せしめて接続する細径配管接続用コネクターにおいて、その中心から放射状に延長しかつ前記配管の環状膨出壁の外径以上の径に亘って設けられた複数の切れ目により画定された複数の楔状部分が形成された底部を有する有底円筒体からなる弾性キャップ部材を、前記コネクター本体の後端部側より被着して前記係合孔部分あるいは切欠き窓部分をその円筒壁により囲繞するを特徴とするものであり、また前記弾性キャップ部材の底部には、コネクター本体の後端部から弾発壁の先端部の距離に対応する長さの爪状の解放部材が軸方向に突出して設けられ、さらに前記弾性キャップ部材の円筒壁には前記開放端部から始まって軸方向に延長する複数のスリットが設けられている細径配管接続用コネクターを特徴とするものである。
【０００９】
そして本発明の第２の実施態様は、軸芯内部に、先端側の連結筒壁の流通孔に連なって拡径した小径室と大径室とを貫設してなるコネクター本体の該小径室部に、シールリング部材とブッシュ部材とを内装せしめ、かつ前記大径室の周壁のなす対向部位に設けられた切欠き窓部分に、それぞれ前方に突設してその中間付近の内方への傾斜した屈曲部を爪壁となして内方へ付勢された弾発壁と、該弾発壁の外端部より軸方向に延長する突壁を有するソケット部材を、前記コネクター本体と一体に設け、前記弾発壁を接続される配管側の環状膨出壁部に係圧せしめて接続する細径配管接続用コネクターにおいて、その中心から放射状に延長しかつ前記配管の環状膨出壁の外径以上の径に亘って設けられた複数の切れ目により画定された複数の楔状部分が形成された底部、および前記配管の環状膨出壁の外周の接線方向に延長するように爪状の解放部材を内壁に突設された円筒壁とを有する有底円筒体からなる弾性キャップ部材を径方向に二つ割りに形成し、前記コネクター本体の外周部に被着して前記切欠き窓部分を前記円筒壁により囲繞する細径配管接続用コネクターを特徴とするものである。
【００１０】
なお本発明においては、前記弾性キャップ部材の開放端部には前記コネクター本体の外周部の段部と係合する係止部が設けら、また前記弾性キャップ部材の底部には前記配管の外径にほぼ合致する中央薄肉部が設けられ、さらに前記切れ目により画定された楔状部分の先端部の１つは前記底部の中央部に設けられた切れ目により画定されたほぼ円形あるいは多角形の中央部分と連続していることを特徴とする。そして前記中央部分はさらに切れ目により複数の小部分に画定され、該小部分はそれぞれ前記楔状部分のうち別個の先端部と連続していることが好ましい。
【００１１】
また本発明では、前記弾性キャップ部材の円筒壁には前記開放端部から始まって軸方向に延長する複数のスリットが設けられ、また前記弾性キャップ部材の円筒壁には前記配管の環状膨出壁と係合して径方向に出入する確認部材が設けられていることを特徴とするものである。
【００１２】
【発明の実施の形態】
つぎに本発明を図面に基いて詳細に説明する。
図１は本発明の細径配管接続用コネクターの一実施例の接続状態を示す図で、（ａ）は長手方向の半截図、（ｂ）は（ａ）のＩ−Ｉ線上の断面図、図２は本発明に使用した弾性キャップ部材とコネクター本体との一実施例の組付け状態を示す図で、（ａ）は長手方向の半截図、（ｂ）は（ａ）の底面図、（ｃ）はコネクター本体単体を９０°回転させて示す長手方向の部分半截図、図３は図１に使用した弾性キャップ部材単体の一実施例を示す図で、（ａ）は長手方向の半截図、（ｂ）は（ａ）の底面図、図４は弾性キャップ部材単体の他の実施例を示す図で、（ａ）は長手方向の半截図、（ｂ）は（ａ）の底面図、図５は本発明を他の実施例に係る細径配管接続用コネクターに適用した状態を示す半截図、図６は弾性キャップ部材単体のさらに他の実施例を示し解放部材の一実施例を付設した図で、（ａ）は長手方向の半截図、（ｂ）は（ａ）の正面図、図７は弾性キャップ部材単体のさらに別の実施例を示す図で、（ａ）は長手方向の半截図、（ｂ）は（ａ）の正面図、図８は図６の弾性キャップ部材を解放部材として用いた場合の一実施例の接続状態を示す図１相当図で、（ａ）は長手方向の半截図、（ｂ）は（ａ）のVIII−VIII線上の断面図、図９は細径配管接続用コネクターのさらに別の実施例の接続状態を示し解放部材の他の実施例を付設した弾性キャップ部材を示す図で、（ａ）は長手方向の半截図、（ｂ）はコネクター本体を９０°回転させて示す長手方向の部分半截図、図１０は図９の実施例に係る細径配管接続用コネクターの解放状態を示す図で、（ａ）は長手方向の半截図、（ｂ）はコネクター本体を９０°回転させて示す長手方向の部分半截図、図１１は図９の実施例の弾性キャップ部材単体の横断面図、図１２はコネクター本体のさらに他の実施例を示し確認部材の一実施例を付設した弾性キャップ部材を示す図で、（ａ）は長手方向の半截図、（ｂ）は（ａ）で使用した確認部材単体の側面図、（ｃ）は（ａ）で使用した弾性キャップ部材の横断面図、図１３はコネクター本体のさらに他の実施例を示し確認部材の他の実施例を付設した弾性キャップ部材を示す図で、（ａ）は長手方向の半截図、（ｂ）は（ａ）で使用した確認部材単体の正面図、（ｃ）は（ａ）で使用した確認部材の側面図、（ｄ）は（ａ）で使用した確認部材の平面図、図１４は図１３に使用されている確認部材を設けた弾性キャップ部材単体の横断面図、図１５はコネクター本体のさらに別の実施例を示し確認部材のさらに他の実施例を付設した弾性キャップ部材を示す図で、（ａ）は長手方向の半截図、（ｂ）は（ａ）で使用した確認部材単体の正面図、（ｃ）は（ａ）で使用した確認部材の側面図、図１６は底部に設けられた切れ目の形状の他の例を示す図で、（ａ）〜（ｃ）はそれぞれの実施例の底面図である。
【００１３】
１はコネクターとしての本体であり、軸芯内部に先端側に突設した樹脂チューブ（図示せず）の差込み用の連結筒壁２の流通孔４に連って拡径した小径室３−１とその背後に大径室３とを貫設してなるものであって、該小径室３−１部にゴム材あるいは樹脂材などによる弾性シールリング部材６と筒状のブッシュ部材７とを内装せしめ、かつ大径室３側の周壁のなす対向部位に設けた切欠き窓１−１部分に、前方に突設してその中間附近の内方に傾斜した外方への屈曲部を爪壁５−１となして内側に付勢する複数の（図示の実施例では一対の）弾発壁１−２と該弾発壁の外端部より軸方向で前方に延長する突壁１−４を有するソケット体５を前記コネクター本体１の周壁と一体に形成するものであるが、前記突壁１−４は図１〜図３の実施例では省略することもできる。
【００１４】
また８は合成樹脂製などからなる弾性キャップ部材であり、接続すべき配管Ｐの外径にほぼ合致する中央薄肉部８−１と、その中心から放射状に延長しかつ前記配管Ｐの環状膨出壁Ｐ′の外径以上の径に亘って設けられた複数の切れ目８−２により画定された複数の楔状部分１０_１、１０_２、…１０_ｎが形成された底部８−３を有する有底円筒体からなり、弾性キャップ部材８を前記コネクター本体１の後端部側より被着して前記切欠き窓１−１部分をその円筒壁８−４により囲繞するよう圧入する。
なお図示の実施例では底部８−３の中央部に薄肉部８−１を設けたものを説明するが、必要に応じて底部８−３全体を均一な厚さの薄肉部として形成したり、あるいは該底部８−３の外周部から中心部に向かって徐々に厚さが減少する断面テーパ状に形成することもできる。
【００１５】
さらに前記弾性キャップ部材８の開放端部には前記コネクター本体１の外周部に設けられた大径の段部１−３と係合するよう内方に向けて突出する係止部８−５が設けられ、また前記弾性キャップ部材８の円筒壁８−４には図４のように前記開放端部から始まって好ましくは前記切欠き窓１−１部分や係合孔部分には達しない長さの軸方向に延長する複数のスリット８−６を設け、さらに該複数のスリット８−６のうち少なくとも１つの長いスリット８−７を前記開放端部から始まって前記底部８−３付近まで延長させて構成する。なお該長いスリット８−７を設けた場合には、弾性キャップ部材８をコネクター本体１に被着した状態で前記スリット８−７は前記切欠き窓１−１部分や係合孔部分には位置せず、コネクター本体１の大径室３の周壁部に位置するように前記キャップ部材８が保持されることが好ましく、このために適当な保持手段、例えば前記段部１−３と係止部８−５とのいずれか一方に突起を、他方に窪みを設けて相互に嵌合して保持するように構成する。
このようなスリット８−６や８−７を設けておくことにより、コネクター本体１への弾性キャップ部材８の被着が容易となる。
【００１６】
図１〜図４に図示した実施例の動作について説明すると、配管Ｐの接続前で運搬あるいは保管時に、予め有底円筒体からなる弾性キャップ部材８を前記コネクター本体１の後端部側より被着して前記切欠き窓１−１部分をその円筒壁８−４により囲繞し、かつ好ましくは係止部８−５をコネクター本体１の外周部の段部１−３に係合させて弾性キャップ部材８をコネクター本体１の外周部の所定位置に保持させる。この状態で運搬、保管などをすれば弾性キャップ部材８によりコネクター本体１の後端部や切欠き窓１−１より塵埃やごみなどが侵入することが防止できるのである。
【００１７】
つぎに配管Ｐをコネクター本体１に接続する際には、配管Ｐの先端部によって弾性キャップ部材８の薄肉部８−１を強く押圧すれば該薄肉部は切れ目８−２より破断され該切れ目８−２により画定された楔状部分１０_１、１０_２、…１０_ｎの先端部側が内方に弯曲し折り込まれ前記配管Ｐの外周面を摺動するので、配管Ｐをコネクター本体１内に挿入することが可能となり、ついで該配管Ｐの環状膨出壁Ｐ′により弾発壁１−２が拡開し、さらに挿入作業を継続することにより環状膨出壁Ｐ′が通過すると弾発壁１−２が元の位置に戻って爪壁５−１が環状膨出壁Ｐ′と係圧して接続が完了する。また弾性キャップ部材８により使用状態下でもコネクター本体１の後端部や切欠き窓１−１より塵埃やごみなどの侵入が防止されることになるのである。
なお上記実施例では、ソケット部材５がコネクター本体１と一体で切欠き窓１−１部分に、前方に突設してその中間付近の内方に傾斜した外方への屈曲部を爪壁５−１となして内側に付勢する弾発壁１−２を有するものについて説明したが、本発明はこのような形式のコネクターのみならず、従来の技術で紹介した図１７に示すようなコネクターに適用できる。
【００１８】
この適用例を図５について説明すると、コネクター本体１′の拡径室３′の周壁に穿設された係合孔１′−１の後端周部のなす掛支壁１′−２の該係合孔１′−１の縁部に、爪壁５′−１となして内方へ付勢された複数の（図示の実施例では一対の）弾発壁５′−２を有する別体のソケット部材５′の基部の肩部を係合した状態をもって、その後端側の環状周壁部を挿着して内装せしめ、内部に組込まれた配管Ｐの環状膨出壁Ｐ′部を前記爪壁５′−１により係圧せしめて接続するように構成されていた。そしてこのように構成されたコネクター本体１′に、前記した通り接続されるべき配管の外径にほぼ合致する中央薄肉部８−１と、その中心から放射状に延長しかつ前記配管Ｐの環状膨出壁Ｐ′の外径以上の径に亘って設けられた複数の切れ目８−２により画定された複数の楔状部分１０_１、１０_２、…１０_ｎが形成された底部８−３を有する有底円筒体からなる弾性キャップ部材８を被着するものであり、この際、該コネクター本体１′の係合孔１′−１部分は弾性キャップ部材８の円筒壁８−４により囲繞されるものである。
このように本発明は図５に示すコネクターのみならず公知の各種のクイック・コネクターにも適用可能であることはいうまでもない。
【００１９】
つぎに弾性キャップ部材８を防塵手段として用いるのみならず、配管Ｐの解放部材として機能させる一例を図６〜図８について説明する。
図６〜図８の実施例においては、前記配管Ｐの環状膨出壁Ｐ′の外周の接線方向に延長するように爪状の解放部材８−８を円筒壁８−４の内壁から突設するとともに、前記切欠き窓１−１部分に、それぞれ前方に突設してその中間付近の内方への傾斜した屈曲部を爪壁５−１となして内方へ付勢された弾発壁１−２の外端部より軸方向で前方に延長する突壁１−４を有するよう形成することが必要である。換言すると、前記突壁１−４と環状膨出壁Ｐ′との間に、その自由尖端が位置するよう円筒壁８−４の内壁から爪状の解放部材８−８を突設させて構成することが必要である。
【００２０】
なお図６〜図８の実施例では、弾性キャップ部材８をコネクター本体１の外周部へ被着するため、図６に図示するように該弾性キャップ部材８を径方向に二つ割りの有底半円筒体として構成し、ヒンジ８−９により開閉自在に構成したり、あるいは径方向に二つ割りに形成した弾性キャップ部材８を該二つ割りの端面部で凹凸嵌合させて有底円筒体を構成したりするものである。
この図６および図７による二つ割りの有底半円筒体として構成した弾性キャップ部材８は、爪状の解放部材８−８を設けずに図１〜図４の実施例にも適用することが可能である。
【００２１】
そしてこれら実施例によれば、図１〜図４に図示した実施例と同様に配管Ｐの接続の前後を問わず、コネクター本体１の後端部や切欠き窓１−１部分より、該コネクター本体１内部への塵埃やごみなどの侵入が常時防止され、かつコネクター本体１へ配管Ｐを何らの支障もなく挿着できるのみならず、さらには配管Ｐのコネクター本体１への接続後に、所望に応じて配管を解放する際には図８（ｂ）の矢印のように弾性キャップ部材８を回転させると前記爪状の解放部材８−８により弾発壁１−２の突壁１−４が外方へ拡開し配管の環状膨出壁Ｐ′との係圧が外れるために配管Ｐを容易に引抜くことができる。
また図６〜８に示した解放部材の他の実施例を図９〜図１１について説明するが、この実施例の解放部材は図１および図５に示す実施例に係る細径配管接続用コネクターのいずれにも適用することができるものである。
【００２２】
図９〜図１１に示す実施例においては爪状の解放部材８−８′は、前記実施例の配管Ｐの環状膨出壁Ｐ′の外周の接線方向に延長するように弾性キャップ部材８の円筒壁８−４の内壁から突設するものではなく、該弾性キャップ部材８の底部８−３の中央薄肉部分８−１より外周側でかつコネクター本体１、１′の内側位置から軸方向で内方に突設せしめたものであり、コネクター本体１、１′の後端部から爪壁５−１、５′−１の先端部の距離に対応する長さに延長し、かつ前記爪壁の数に応じた数（図示の実施例では２つ）が設けられるものである。
そしてこのような解放部材８−８′を有する弾性キャップ部材８を前記したようにコネクター本体１、１′に被着する際にソケット体５、５′の爪壁５−１、５′−１の位置と解放部材８−８′の位置を位相をずらせた状態で前記コネクター本体に被着する。
【００２３】
このようにコネクター本体１、１′に弾性キャップ部材８を被着した状態で配管Ｐを弾性キャップ部材の中央薄肉部８−１を破断して前記コネクター本体内に挿入することにより接続が完了することは前述の通りである。一方接続後に所望に応じて配管Ｐを解放する場合には、一旦前記弾性キャップ部材８をコネクター本体１、１′より取外す方向に移動させた後、解放部材８−８′の位置と爪壁５−１、５′−１の位置とを一致させた状態で再度コネクター本体１、１′に弾性キャップ部材８を被着させる方向に押圧する（図１０参照）。この被着方向への押圧によって弾性キャップ部材内に突設する解放部材８−８′により爪壁５−１、５′−１が外方に拡開されて持ち上がり該爪壁と配管Ｐの環状膨出壁Ｐ′との係圧が外れて配管Ｐをコネクター本体１、１′から引抜くことが可能となる。
したがって図示していないが弾性キャップ部材８の外周部には解放部材８−８′の位置を示す目印を付しておくことが好ましい。
【００２４】
つぎに弾性キャップ部材８をさらに配管Ｐのコネクター本体への接続状態の適否を目視で確認する確認部材として機能させ、必要に応じて前記した解放部材と併設して用いる実施例を図１２〜図１５について説明する。
まず図１２の実施例においては弾性キャップ部材８の円筒壁８−４に径方向に延長する筒壁８−１０を一体に突設させ、該筒壁の位置を配管Ｐの環状膨出壁Ｐ′の位置に一致させる。そしてこの筒壁８−１０の内孔８−１１に一端付近にスリット９−１を、他端にテーパ面９−２を有する例えば合成樹脂などの弾性体からなるほぼ角柱状の確認部材９を圧嵌する。なお確認部材９の形状は円柱状、楕円柱状などいずれの形状でもよいが、角柱状や楕円状などが確認部材の回転がないために好ましい。そして確認部材９は前記テーパ面９−２をコネクター本体１、１′の後端側に対向させかつ爪壁５−１、５′−１とブッシュ部材７との間に突出させるとともに、前記スリット９−１が内孔８−１１内に収まるような寸法を有するものである。なお図１の実施例の細径配管接続用コネクターにかかる確認部材を用いる場合には、弾発壁１−２の外端部より軸方向に前方に延長する突壁１−４は設けないようにする。
【００２５】
前記したような形状の確認部材９を円筒壁８−４の内周に突出しないよう筒壁８−１０の内孔８−１１に挿入した弾性キャップ部材８をコネクター本体１、１′に被着し、ついで前記スリット９−１が筒壁８−１０内に位置するよう確認部材９を内孔８−１１に圧嵌し、その後前記弾性キャップ部材９の薄肉部８−１を破断して配管Ｐをコネクター本体１、１′に挿入して環状膨出壁Ｐ′が爪壁５−１、５′−１を拡開して環状膨出壁Ｐ′が該爪壁を通過するとこの爪壁の弾性により元の位置に戻って接続が完了する。この際に環状膨出壁Ｐ′により確認部材９が径方向の外側に押圧され、前記筒壁８−１０の上端よりその頂部の一部突出した状態となる。この状態となると確認部材９の頂部側がスリット９−１より開口して傾斜した形態（図１２（ｂ）参照）となるために、適正な接続が完了したことが目視にて確認できるのである。
なお確認部材９の中央部の外周面とスリット９−１側端部外周面とには複数の突起９ａ、９ｂを設けて内孔８−１１内に確認部材９を圧嵌した後の保管、運搬時や確認部材９が筒壁８−１０より突出した時に該確認部材が抜け落ちることを防止することが好ましい。この場合前記突起９ａ、９ｂの高さは弾性キャップ部材８や確認部材９の材質や厚さ、径などにより多少異なるが、一般的には０．１ｍｍ程度であり、また該突起間の軸方向の距離は筒壁８−１１の厚さより僅かに長くし、さらに突起９ａ、９ｂの数は適宜選択でき、場合によってはそれぞれリング状に形成することもできる。
【００２６】
また本発明で使用する確認部材の他の実施例を図１３および図１４について説明する。
この実施例では弾性キャップ部材８の円筒壁８−４の直径方向の相対する位置に径方向に延長する一対の筒壁８−１０、８−１０′を一体に突設し、かつ該筒壁のそれぞれの位置を配管Ｐの環状膨出壁Ｐ′の位置に一致させるとともに、前記筒壁８−１０、８−１０′の内孔の形状を外側部分を角孔８−１１′、これに連なる内側部分を丸孔８−１１″に形成してなるものである。
一方確認部材９は全体としてほぼＣ字状の形状を有し、両端部に一体となった棒状部９−３、９−３′を相互に対向するよう突設してなり、該棒状部は前記した内孔の形状に対応させて根元側の断面が角形部９−４に、また先端側の断面が丸形部９−５に形成されており、かつ先端部にはテーパ面９−６を有するものである。
【００２７】
そしてこの実施例では前記したような形状の確認部材９の一対の棒状部９−３、９−３′を筒壁８−１０、８−１０′の内孔に圧嵌して棒状部の角形部９−４を角孔８−１１′に、また丸形部９−５を丸孔８−１１″に係合させかつテーパ面９−６をコネクター本体１、１′の後端側に面するよう前記弾性キャップ部材８をコネクター本体１、１′に被着し配設しておく。このように確認部材９を組付けられた弾性キャップ部材８を用いて図１２と同様にして配管Ｐが適正位置に接続されると、環状膨出壁Ｐ′により確認部材９の棒状体９−３、９−３′が径方向の外側に押圧され、前記棒状部９−３の角形部９−４が筒壁８−１０の角孔８−１１′との係合から外れるためにほぼＣ字状の確認部材９が前記丸形部９−５を中心として回転可能となり、適正な接続が完了したことが目視のみならず、手による接触でも確認できるのである。
【００２８】
さらに本発明で使用する確認部材の別の実施例を図１５について説明する。
この実施例でも弾性キャップ部材８の円筒壁８−４の直径方向の相対する位置に径方向に延長する一対の筒壁８−１０、８−１０′を一体に突設し、かつ該筒壁のそれぞれの位置を配管Ｐの環状膨出壁Ｐ′の位置に一致させるとともに、前記筒壁８−１０、８−１０′の内孔の形状を好ましくは角孔８−１２に形成してなるものである。
一方確認部材９は全体として丸みを帯びたほぼ菱形の形状を有する例えば合成樹脂などの弾性体から構成され、両端部に好ましくは断面が角形の先端部９−７、９−７′が一体に形成されており、かつ中央部のほぼ菱形の開口部９−８には一対のテーパ壁９−９を有するものである。そして前記開口部９−８は配管Ｐ自体の直径より短辺側の内径がやや大径となるように形成されている。
そしてこの実施例では前記したような形状の確認部材９の一対の断面が角形の先端部９−７、９−７′を筒壁８−１０、８−１０′の角孔８−１２に圧嵌しかつテーパ壁９−９がコネクター本体１、１′の後端側に面するように配設しておく。このように弾性キャップ部材８をコネクター本体１、１′に被着した後組付けられた確認部材９は図１２〜図１４と同様にして配管Ｐが適正位置に接続されると、環状膨出壁Ｐ′により確認部材９のほぼ菱形の開口部９−８が径方向に押圧されて広げられ、これにより確認部材９の全長が短くなるので前記先端部９−７、９−７′が角孔８−１２内に没し、適正な接続が完了したことが目視で確認できるのである。
なお９−７′ａは先端部９−７に設けられたスリットであるが、このスリットは所望に応じて省略することもでき、また場合によっては両先端部９−７、９−７′の両方に設けることもできる。
【００２９】
以上図１２〜図１５に示す確認部材の実施例では該確認部材と弾性キャップ部材との関係についてのみ説明したが、図９〜図１１に示す解放部材８−８′を弾性キャップ部材８に併設することもできる。
この場合は筒壁８−１０、８−１０′と爪状の解放部材８−８′の位置を弾性キャップ部材８において位相をずらせて配設すればよく、図示の実施例の場合はそれぞれ９０°位相をずらせてある。
なお配管Ｐを引抜くために一旦弾性キャップ部材８を取り外し、ついで爪壁５−１、５−１′と解放部材８−８′の位置を一致させて再度被着する必要があり、したがって弾性キャップ部材８のコネクター本体１、１′への再被着の後に確認部材は着脱自在に構成することが好ましい。
つぎに弾性キャップ部材８の底部８−３に設けられた前記切れ目８−２の形成を容易にし、かつ配管Ｐの挿入時にその先端部による切れ目８−２よりの破断の際に、該切れ目により画定された複数の楔状部分１０_１、１０_２、…１０_ｎの先端部の一部が破損して細片となりコネクター本体１内部に入り込むことによる各種の問題の発生を防止するためには図１６のように切れ目を形成することが好ましい。
【００３０】
すなわち前記弾性キャップ部材８の底部８−３に形成された前記切れ目８−２により画定された楔状部分１０_１、１０_２、…１０_ｎの先端部の１つを、前記底部８−２の中央部に設けられた切れ目８−２′により画定された図１６（ａ）のようなほぼ円形（すなわち一部が欠けた円形）あるいは図１６（ｂ）のようなほぼ多角形（すなわち一部が欠けた多角形）の中央部分１０′と、前記欠けた一部が連続するよう一体に形成して構成したものである。したがって底部８−３には切れ目８−２、８−２′によって画定された連続するほぼ「照る照る坊主」形状の部分を具備することになる。
【００３１】
また図１６（ｃ）のように前記中央部分１０′にさらに切れ目８−２″を設けて該切れ目により該中央部分１０′を複数の小部分１０′ａ、１０′ｂに画定し、該小部分１０′ａ、１０′ｂをそれぞれ前記楔状部分１０_１、１０_２、…１０_ｎのうち別個の先端部と連続するように構成することもできるが、この場合には小部分の数をあまり多くすると、この小部分において配管Ｐの挿入時の前記した破損の問題が発生する可能性があるため、せいぜい２〜４程度とすることが好ましい。
【００３２】
なお図１６のように底部８−３に切れ目８−２、８−２′あるいは８−２″を形成した場合には、弾性キャップ部材８をコネクター本体１、１′に被着した状態で前記中央部分１０′、小部分１０′ａ、１０′ｂが前記爪壁５−１、５−１′部分には位置せず、コネクター本体１の大径室３の周壁部に位置するように保持することが好ましい。その理由は前記切れ目８−２、８−２′あるいは８−２″により画定された中央部分１０′または小部分１０′ａ、１０′ｂが前記爪壁５−１、５−１′と環状膨出壁Ｐ′との間に挟み込まれてしまうことを防止するからであり、このために前記図４の実施例と同様に適当な保持手段を設けることが望ましい。
そして所望に応じて上記実施例においては弾性キャップ部材８の底部８−３を別体として形成しておき該キャップ部材のコネクター本体への被着後に接着あるいは溶着して有底円筒体形状に形成することもでき、また切り目８−２は底部８−３の外表面または内表面あるいは両表面に設けることもできる。
【００３３】
【発明の効果】
以上述べた通り本発明によれば、配管との接続の前後を問わず常に防塵効果を有し、かつ配管の接続作業には何らの支障もなく接続でき、さらに必要に応じて配管を容易に解放できかつ配管の接続状態の適否を目視により確認し得る細径配管接続用コネクターを提供することがきるものである。
【図面の簡単な説明】
【図１】本発明の細径配管接続用コネクターの一実施例の接続状態を示す図で、（ａ）は長手方向の半截図、（ｂ）は（ａ）のＩ−Ｉ線上の断面図である。
【図２】本発明に使用した弾性キャップ部材とコネクター本体との一実施例の組付け状態を示す図で、（ａ）は長手方向の半截図、（ｂ）は（ａ）の底面図、（ｃ）はコネクター本体単体を９０°回転させて示す長手方向の部分半截図である。
【図３】図１に使用した弾性キャップ部材単体の一実施例を示す図で、（ａ）は長手方向の半截図、（ｂ）は（ａ）の底面図である。
【図４】弾性キャップ部材単体の他の実施例を示す図で、（ａ）は長手方向の半截図、（ｂ）は（ａ）の底面図である。
【図５】本発明を他の実施例に係る細径配管接続用コネクターに適用した状態を示す半截図である。
【図６】弾性キャップ部材単体のさらに他の実施例を示す図で、（ａ）は長手方向の半截図、（ｂ）は（ａ）の正面図である。
【図７】弾性キャップ部材単体のさらに別の実施例を示す図で、（ａ）は長手方向の半截図、（ｂ）は（ａ）の正面図である。
【図８】図６の弾性キャップ部材を用いた場合の接続状態を示す図１相当図で、（ａ）は長手方向の半截図、（ｂ）は（ａ）のVIII−VIII線上の断面図である。
【図９】本発明の細径配管接続用コネクターのさらに別の実施例の接続状態を示し解放部材の他の実施例を付設した弾性キャップ部材を示す図で、（ａ）は長手方向の半截図、（ｂ）はコネクター本体を９０°回転させて示す長手方向の部分半截図である。
【図１０】図９の実施例に係る細径配管接続用コネクターの解放状態を示す図で、（ａ）は長手方向の半截図、（ｂ）はコネクター本体を９０°回転させて示す長手方向の部分半截図である。
【図１１】図９の実施例の弾性キャップ部材単体の横断面図である。
【図１２】本発明のコネクター本体のさらに他の実施例を示し確認部材の一実施例を付設した弾性キャップ部材を示す図で、（ａ）は長手方向の半截図、（ｂ）は（ａ）で使用した確認部材単体の側面図、（ｃ）は（ａ）で使用した弾性キャップ部材の横断面図である。
【図１３】本発明のコネクター本体のさらに他の実施例を示し確認部材の他の実施例を付設した弾性キャップ部材を示す図で、（ａ）は長手方向の半截図、（ｂ）は（ａ）で使用した確認部材単体の正面図、（ｃ）は（ａ）で使用した確認部材の側面図、（ｄ）は（ａ）で使用した確認部材の平面図である。
【図１４】図１３に使用されている確認部材を設けた弾性キャップ部材単体の横断面図である。
【図１５】本発明のコネクター本体のさらに別の実施例を示し確認部材のさらに他の実施例を付設した弾性キャップ部材を示す図で、（ａ）は長手方向の半截図、（ｂ）は（ａ）で使用した確認部材単体の正面図、（ｃ）は（ａ）で使用した確認部材の側面図である。
【図１６】弾性キャップ部材の底部に設けられた切れ目の形状の他の例を示す図で、（ａ）、（ｂ）および（ｃ）はそれぞれの実施例の底面図である。
【図１７】従来の細径配管接続用コネクターの半截図である。
【図１８】従来の弾性キャップ部材とコネクター本体との組付け状態を示す半截図である。
【図１９】図１１に示された弾性キャップ単体を示す図で、（ａ）は半截図、（ｂ）は（ａ）の底面図である。
【符号の説明】
１、１′ コネクター本体
１−１切欠き窓
１′−１係合孔
１′−２掛支壁
１−２弾発壁
１−３段部
１−４突壁
２連結筒壁
３、３′ 大径室
３−１小径室
４流通孔
５、５′ ソケット体
５−１、５′−１爪壁
５′−２弾発壁
６弾性シールリング部材
７筒状のブッシュ部材
８弾性キャップ部材
８−１中央薄肉部
８−２、８−２′、８−２″ 切れ目
８−３底部
８−４円筒壁
８−５係止部
８−６複数のスリット
８−７長いスリット
８−８、８−８′ 爪状の解放部材
８−９ヒンジ
８−１０、８−１０′ 筒壁
８−１１内孔
８−１１′ 角孔
８−１１″ 丸孔
８−１２角孔
９確認部材
９−１スリット
９−２、９−６テーパ面
９−３、９−３′ 棒状部
９−４角形部
９−５丸形部
９−７、９−７′ 先端部
９−７′ａスリット
９−８開口部
９−９テーパ壁
９ａ、９ｂ突起
１０_１、１０_２、…１０_ｎ楔状部分
１０′ 中央部分
１０′ａ、１０′ｂ小部分
Ｐ配管
Ｐ′ 環状膨出壁[0001]
BACKGROUND OF THE INVENTION
In general, the present invention relates to a metal tube or a resin tube (hereinafter simply referred to as a pipe) having a relatively small diameter of about 40 mm or less in diameter, which is provided as a supply path for oil supply or supply air to automobiles or various machines and devices. In particular, a small-diameter pipe that is equipped with a cap member that always has a dustproof effect before and after connection to the pipe, and can easily release the pipe after connection as necessary. It relates to a connector for connection.
[0002]
[Prior art]
Conventionally, various types of quick connectors for connecting small-diameter pipes have been proposed and put to practical use. As an example, for example, as shown in FIG. A seal ring member 26 and a bush member 27 are installed in the small-diameter chamber 23-1 of the connector main body 21 formed by penetrating the small-diameter chamber 23-1 and the large-diameter chamber 23 which are continuously expanded. And the peripheral wall of the axial center hole is formed at the edge of the engaging hole 21-1 of the hanging wall 21-2 formed by the rear end peripheral part of the engaging hole 21-1 formed in the peripheral wall of the large-diameter chamber 23. A separate socket body 28 having a plurality of claw walls 25 inclined inward at the front in the assembling direction is engaged with the base shoulder 25-1 formed by the claw wall 25, and the rear end Piping P built into the interior of the annular peripheral wall 25-2 on the side ₀ Annular bulging wall P ₀ The 'part is configured to be connected by being pressed by the claw wall 25.
[0003]
As another example, as disclosed in Japanese Patent Application Laid-Open No. 9-280451 (Japanese Patent Application No. 8-112003) proposed by the present applicant, it is connected to the flow hole of the connecting cylindrical wall on the tip side inside the shaft core. The small diameter chamber portion of the connector main body formed by penetrating the small diameter chamber and the large diameter chamber is provided with a seal ring member and a bush member, and at a facing portion formed by the peripheral wall of the large diameter chamber. A notched window portion provided in front of each of the notched windows and a nail wall formed by a bent portion inclined inwardly in the middle of the notched window portion, and an outwardly biased bullet wall, A socket member having a protruding wall extending from the end to the outside of the peripheral wall of the connector main body is provided integrally with the connector main body, and the elastic wall is pressed against an annular bulging wall portion on a pipe side to be connected. Was configured to connect.
In the above publication, a protruding portion is provided on the outer side of the peripheral wall of the small-diameter chamber, and a cylindrical annular release member that can be rotated left and right is engaged with the protruding portion, and the rear end side of the release member The cam member has a cam wall on the surface opposite to the projecting wall or the outer peripheral surface of the connector body, and when the pipe is connected and released, the rotation position of the release member is rotated along with the rotation of the release member. Provided with a pair of locking means to be set constant, the projecting wall is expanded and closed, and the claw wall is engaged and released so that the pipe can be easily released from the connected state. It is.
[0004]
However, in any conventional example, dust or debris enters the connector body from the rear end side of the connector body, the engagement hole, or the cutout window when the connector body is transported or stored before piping connection. After the pipe to be connected is inserted and the connection is completed, the surface treatment layer on the pipe side is worn or sealed at the pressure-engaging part between the claw wall of the socket body and the annular bulging wall of the pipe There has been a problem that dust or dirt that has entered between the ring member and the inner peripheral surface of the small-diameter chamber or the outer peripheral surface of the pipe is interposed to hinder the sealing performance. In addition, there is a problem that dust or dirt that has entered moves to the downstream piping parts due to the fluid flowing inside after connecting the pipes and causes functional failure due to blockage or galling.
[0005]
In order to prevent the occurrence of such a problem, cap members as shown in FIGS. 18 and 19 have been proposed. The cap member 41 will be described with reference to an example in which the cap member 41 is used in a connector body 31 having a configuration similar to the latter of the conventional techniques described above. The cap member 41 includes a bottomed cylindrical body 42 and an outer side of the bottomed cylindrical body 42. An outer cylindrical body 43 that is spaced radially inward, and an end that extends radially outward from the open end of the bottomed cylindrical body 42 and is integrated with the end surface of the outer cylindrical body 43. The outer cylindrical body 43 surrounds an engagement hole or notch window 31-1 formed in the peripheral wall of the connector main body 31, and is provided on the outer peripheral portion of the peripheral wall. The bottomed cylindrical body 42 extends from the rear end portion of the connector body 31 to the bush member 37 and the seal ring member 36 that are housed in the small-diameter chamber, and the outer peripheral surface thereof is Sealed by seal ring member 36 It is configured to be one in which is press-fitted from the rear end of the connector body 31.
[0006]
[Problems to be solved by the invention]
The cap member described above is effective in preventing dust and debris from entering during transport and storage of the connector body before connecting the pipe, but it must be removed from the rear end of the connector body when connecting the pipe. Under the system, this work takes time and workability is inferior, and after connecting the pipe, the cap member remains removed and there is no dustproof means, so there is no engagement hole part or notch window part or rear end of the connector body Dust and dust enter the connector body from the side, wear of the surface treatment layer on the pipe side in the pressure-engaging part between the claw wall of the socket member and the annular bulging wall of the pipe, and the inside of the seal ring member and the small-diameter chamber The sealing performance between the peripheral surface and the outer peripheral surface of the pipe deteriorates, and functional failures due to blockage or galling of the downstream pipe parts occur, so that improvement has been demanded.
[0007]
The present invention has been made in view of the problems of the prior art, and always has a dustproof effect regardless of before and after connection with the pipe, and can be connected without any trouble in the pipe connection work. An object of the present invention is to provide a connector for connecting a small-diameter pipe that can easily release a pipe as needed and can visually confirm the suitability of the pipe connection state.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a first embodiment of the present invention is a connector in which a small-diameter chamber and a large-diameter chamber that are expanded in diameter are connected to the flow hole of the connecting cylindrical wall on the tip side inside the shaft core. A seal ring member and a bush member are internally provided in the small-diameter chamber portion of the main body, and a claw wall is formed in each of the engagement hole portion or the notch window portion provided in the facing portion formed by the peripheral wall of the large-diameter chamber. A socket member having a resilient wall urged inward is provided separately or integrally with the connector body, and the resilient wall is connected to an annular bulging wall portion on the pipe side to which the resilient wall is connected. In the small-diameter pipe connection connector, a plurality of wedge-shaped portions defined by a plurality of cuts extending radially from the center and extending over the outer diameter of the annular bulging wall of the pipe are formed. Elastic key consisting of a bottomed cylindrical body with a bottom And the engagement hole portion or the cutout window portion is surrounded by the cylindrical wall of the connector body from the rear end side of the connector body, and the bottom portion of the elastic cap member Is provided with a claw-like release member having a length corresponding to the distance from the rear end portion of the connector body to the front end portion of the resilient wall, and projecting in the cylindrical wall of the elastic cap member. It is characterized by a connector for connecting a small-diameter pipe provided with a plurality of slits starting from the end and extending in the axial direction.
[0009]
In the second embodiment of the present invention, the small-diameter chamber of the connector main body is formed by penetrating a small-diameter chamber and a large-diameter chamber that extend in diameter in the shaft core so as to continue to the flow hole of the connecting cylindrical wall on the distal end side. The seal ring member and the bush member are internally installed in the portion, and the notched window portion provided at the facing portion formed by the peripheral wall of the large-diameter chamber is respectively projected forward and inward in the vicinity of the middle. A slanted bent portion is used as a claw wall, and a bullet wall that is biased inward is extended in the axial direction from the outer end of the bullet wall. Projecting wall A small-diameter pipe connection connector that is provided integrally with the connector main body and is connected by being pressed against an annular bulging wall portion on the pipe side to which the elastic wall is connected. A bottom portion formed with a plurality of wedge-shaped portions defined by a plurality of cuts extending and having a diameter greater than or equal to an outer diameter of the annular bulging wall of the pipe, and an outer periphery of the annular bulging wall of the pipe An elastic cap member made of a bottomed cylindrical body having a claw-like release member and a cylindrical wall projecting on the inner wall so as to extend in the tangential direction is divided into two in the radial direction, and the outer peripheral portion of the connector body is covered. A connector for connecting a small-diameter pipe that is attached and surrounds the cut-out window portion with the cylindrical wall.
[0010]
In the present invention, the open end portion of the elastic cap member is provided with a locking portion that engages with a step portion of the outer peripheral portion of the connector main body, and the outer diameter of the pipe is provided at the bottom portion of the elastic cap member. And a wedge-shaped tip defined by the cut is provided at one end of a substantially circular or polygonal central defined by a cut provided in the center of the bottom. It is characterized by being continuous. The central portion is further defined by a plurality of small portions by cuts, and each small portion is preferably continuous with a separate tip portion of the wedge-shaped portion.
[0011]
Also, in the present invention, the cylindrical wall of the elastic cap member is provided with a plurality of slits that start from the open end and extend in the axial direction, and the cylindrical wall of the elastic cap member has an annular bulging wall of the pipe And a confirmation member that engages and disengages in the radial direction is provided.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention will be described in detail with reference to the drawings.
FIG. 1 is a view showing a connection state of an embodiment of a small-diameter pipe connection connector according to the present invention, in which (a) is a half view in the longitudinal direction, (b) is a cross-sectional view taken along the line I-I in (a), 2A and 2B are diagrams showing an assembled state of an embodiment of the elastic cap member and the connector main body used in the present invention, wherein FIG. 2A is a half view in the longitudinal direction, FIG. 2B is a bottom view of FIG. FIG. 3C is a partial half-sectional view in the longitudinal direction showing the connector main body rotated by 90 °, FIG. 3 is a view showing an embodiment of the elastic cap member used in FIG. 1, and FIG. , (B) is a bottom view of (a), FIG. 4 is a view showing another embodiment of the elastic cap member alone, (a) is a half-sectional view in the longitudinal direction, (b) is a bottom view of (a), FIG. 5 is a semi-circular view showing a state in which the present invention is applied to a connector for connecting a small diameter pipe according to another embodiment, and FIG. And FIG. 7 is a diagram showing another embodiment of the release member, wherein (a) is a longitudinal half view, (b) is a front view of (a), and FIG. 7 is still another elastic cap member alone. FIG. 8A is a half view in the longitudinal direction, FIG. 8B is a front view of FIG. 8A, and FIG. 8 is an example of an embodiment in which the elastic cap member of FIG. 6 is used as a release member. FIG. 1 is a diagram corresponding to FIG. 1, (a) is a half view in the longitudinal direction, (b) is a cross-sectional view taken along line VIII-VIII in (a), and FIG. 9 is yet another implementation of a connector for connecting a small-diameter pipe. FIG. 6 is a view showing an elastic cap member showing another example of the connection state and provided with another embodiment of the release member, (a) is a half view in the longitudinal direction, (b) is a view in the longitudinal direction shown by rotating the connector body by 90 ° FIG. 10 is a partial half view, and FIG. 10 is a diagram showing a released state of the connector for connecting a small diameter pipe according to the embodiment of FIG. FIG. 11B is a partial half-sectional view in the longitudinal direction showing the connector body rotated by 90 °, FIG. 11 is a cross-sectional view of the elastic cap member alone of the embodiment of FIG. 9, and FIG. It is a figure which shows the elastic cap member which attached the one Example of the confirmation member which showed the Example of (1), (a) is a half view of a longitudinal direction, (b) is a side view of the confirmation member single-piece | unit used by (a), (c) is a cross-sectional view of the elastic cap member used in (a), FIG. 13 is a view showing still another embodiment of the connector body, and showing an elastic cap member provided with another embodiment of the confirmation member. ) Is a half view in the longitudinal direction, (b) is a front view of the confirmation member used in (a), (c) is a side view of the confirmation member used in (a), and (d) is used in (a). 14 is a plan view of the confirmation member, and FIG. 14 is an elasticity provided with the confirmation member used in FIG. FIG. 15 is a cross-sectional view of a single cap member, FIG. 15 is a view showing another embodiment of the connector body, and an elastic cap member provided with still another embodiment of the confirmation member. (B) is a front view of the confirmation member used in (a), (c) is a side view of the confirmation member used in (a), and FIG. 16 shows another example of the shape of the cut provided at the bottom. In the figure, (a) to (c) are bottom views of the respective examples.
[0013]
Reference numeral 1 denotes a main body as a connector, and a small-diameter chamber 3-1 having an enlarged diameter connected to a flow hole 4 in a connecting cylindrical wall 2 for inserting a resin tube (not shown) protruding on the tip side inside the shaft core. And a large-diameter chamber 3 therethrough, and an elastic seal ring member 6 made of a rubber material or a resin material and a cylindrical bush member 7 are provided in the small-diameter chamber 3-1. The nail wall has an outwardly bent portion projecting forward and inclined inwardly in the middle of the notch window 1-1 provided at the facing portion formed by the peripheral wall on the large-diameter chamber 3 side. A plurality (a pair in the illustrated embodiment) of bullet walls 1-2 that are 5-1 and urged inward, and a projecting wall 1-4 that extends forward in the axial direction from the outer end of the bullet walls. The socket body 5 having the above-mentioned structure is formed integrally with the peripheral wall of the connector body 1, and the protruding wall 1-4 is the embodiment of FIGS. It can also be omitted.
[0014]
Reference numeral 8 denotes an elastic cap member made of a synthetic resin or the like, a central thin portion 8-1 that substantially matches the outer diameter of the pipe P to be connected, and an annular bulge of the pipe P extending radially from the center. A plurality of wedge-shaped portions 10 defined by a plurality of cuts 8-2 provided over the outer diameter of the wall P '. ₁ 10 ₂ ... 10 _n Is formed with a bottomed cylindrical body having a bottom portion 8-3 formed thereon, and an elastic cap member 8 is attached from the rear end side of the connector body 1 so that the cutout window 1-1 portion is a cylindrical wall 8- 4 to press fit.
In the illustrated embodiment, the thin portion 8-1 is provided at the center of the bottom portion 8-3, but if necessary, the entire bottom portion 8-3 is formed as a thin portion having a uniform thickness. Or it can also form in the cross-sectional taper shape from which the thickness reduces gradually toward the center part from the outer peripheral part of this bottom part 8-3.
[0015]
Further, a locking portion 8-5 that protrudes inward so as to engage with a large-diameter stepped portion 1-3 provided on the outer peripheral portion of the connector body 1 is provided at the open end of the elastic cap member 8. The cylindrical wall 8-4 of the elastic cap member 8 has a length that starts from the open end as shown in FIG. 4 and preferably does not reach the notch window 1-1 or the engagement hole. A plurality of slits 8-6 extending in the axial direction are provided, and at least one long slit 8-7 of the plurality of slits 8-6 is extended from the open end to the vicinity of the bottom 8-3. Configure. In the case where the long slit 8-7 is provided, the slit 8-7 is positioned in the notch window 1-1 portion or the engagement hole portion with the elastic cap member 8 attached to the connector body 1. The cap member 8 is preferably held so as to be positioned on the peripheral wall portion of the large-diameter chamber 3 of the connector main body 1. For this purpose, suitable holding means, for example, the stepped portion 1-3 and the locking portion are used. Protrusions are provided on either one of 8-5 and a recess is provided on the other, and are configured to fit and hold each other.
By providing such slits 8-6 and 8-7, the elastic cap member 8 can be easily attached to the connector body 1.
[0016]
The operation of the embodiment shown in FIGS. 1 to 4 will be described. When transporting or storing the pipe P before connection, the elastic cap member 8 made of a bottomed cylindrical body is covered from the rear end side of the connector body 1 in advance. The cutout window 1-1 is surrounded by the cylindrical wall 8-4, and the engaging portion 8-5 is preferably engaged with the stepped portion 1-3 on the outer peripheral portion of the connector body 1 to be elastic. The cap member 8 is held at a predetermined position on the outer peripheral portion of the connector body 1. When transported and stored in this state, the elastic cap member 8 can prevent dust and dirt from entering from the rear end of the connector body 1 and the cutout window 1-1.
[0017]
Next, when connecting the pipe P to the connector body 1, if the thin portion 8-1 of the elastic cap member 8 is strongly pressed by the tip portion of the pipe P, the thin portion is broken from the cut 8-2 and the cut 8. -Wedge 10 defined by -2 ₁ 10 ₂ ... 10 _n The tip side of the Fold Since it is folded and slides on the outer peripheral surface of the pipe P, it becomes possible to insert the pipe P into the connector body 1 and then the elastic wall 1-2 is expanded by the annular bulging wall P ′ of the pipe P. When the annular bulging wall P ′ passes by continuing the insertion operation, the resilient wall 1-2 returns to its original position and the claw wall 5-1 is engaged with the annular bulging wall P ′ to establish connection. Complete. In addition, the elastic cap member 8 prevents intrusion of dust and dirt from the rear end portion of the connector main body 1 and the cutout window 1-1 even under use.
In the above-described embodiment, the socket member 5 is integrally formed with the connector body 1 at the notch window 1-1, and protrudes forward, and the outwardly bent portion near the middle is provided with the outwardly bent portion. -1 and having a bullet wall 1-2 that is biased inward, the present invention was introduced not only in this type of connector but also in the prior art. FIG. Applicable to connectors as shown in
[0018]
An example of this application will be described with reference to FIG. 5. The hanging wall 1′-2 formed by the rear end peripheral portion of the engagement hole 1′-1 formed in the peripheral wall of the diameter expansion chamber 3 ′ of the connector body 1 ′. A separate body having a plurality of (a pair of in the illustrated embodiment) resilient walls 5'-2 which are urged inwardly as claw walls 5'-1 at the edge of the engagement hole 1'-1. With the shoulder portion of the base portion of the socket member 5 'engaged, the annular peripheral wall portion on the rear end side is inserted into the interior, and the annular bulging wall P' portion of the pipe P incorporated therein is attached to the claw. It was configured to be connected by being pressed by the wall 5'-1. The connector main body 1 ′ thus configured has a central thin portion 8-1 that substantially matches the outer diameter of the pipe to be connected as described above, and an annular expansion of the pipe P extending radially from the center. A plurality of wedge-shaped portions 10 defined by a plurality of cuts 8-2 provided over a diameter equal to or larger than the outer diameter of the exit wall P ′. ₁ 10 ₂ ... 10 _n An elastic cap member 8 made of a bottomed cylindrical body having a bottom portion 8-3 formed thereon is attached. At this time, the engagement hole 1'-1 portion of the connector main body 1 ' Is surrounded by the cylindrical wall 8-4.
Thus, it goes without saying that the present invention is applicable not only to the connector shown in FIG. 5 but also to various known quick connectors.
[0019]
Next, an example in which the elastic cap member 8 is used not only as dust-proof means but also functions as a release member for the pipe P will be described with reference to FIGS.
6-8, a claw-like release member 8-8 projects from the inner wall of the cylindrical wall 8-4 so as to extend in the tangential direction of the outer periphery of the annular bulging wall P ′ of the pipe P. In addition, each of the cutout windows 1-1 protrudes forward, and a bent portion inclined inward in the vicinity of the middle serves as a claw wall 5-1, and is urged inward. It is necessary to form so as to have a protruding wall 1-4 that extends forward in the axial direction from the outer end of the wall 1-2. In other words, a claw-like release member 8-8 protrudes from the inner wall of the cylindrical wall 8-4 so that the free tip is located between the protruding wall 1-4 and the annular bulging wall P ′. It is necessary to.
[0020]
In the embodiment shown in FIGS. 6 to 8, the elastic cap member 8 is attached to the outer peripheral portion of the connector body 1, so that the elastic cap member 8 is divided in half in the radial direction as shown in FIG. It is configured as a body and can be opened and closed by a hinge 8-9, or an elastic cap member 8 formed in half in the radial direction is fitted into a concave and convex portion at the end surface portion of the two parts to form a bottomed cylindrical body. Is.
The elastic cap member 8 configured as a half-bottomed semi-cylindrical body according to FIGS. 6 and 7 can be applied to the embodiment of FIGS. 1 to 4 without providing the claw-like release member 8-8. It is.
[0021]
According to these embodiments, the connector is connected from the rear end portion of the connector body 1 and the cutout window 1-1 regardless of before and after the connection of the pipe P as in the embodiments shown in FIGS. Intrusion of dust, dirt, etc. into the main body 1 is always prevented, and the pipe P can be inserted into the connector main body 1 without any trouble. When releasing the pipe according to the above, if the elastic cap member 8 is rotated as indicated by the arrow in FIG. 8B, the protruding wall 1-4 of the elastic wall 1-2 is caused by the claw-like release member 8-8. Expands outward and the engagement pressure with the annular bulging wall P ′ of the pipe is released, so that the pipe P can be easily pulled out.
Further, another embodiment of the release member shown in FIGS. 6 to 8 will be described with reference to FIGS. 9 to 11. The release member of this embodiment is a connector for connecting a small diameter pipe according to the embodiment shown in FIGS. It can be applied to any of the above.
[0022]
In the embodiment shown in FIGS. 9 to 11, the claw-like release member 8-8 ′ is formed on the elastic cap member 8 so as to extend in the tangential direction of the outer periphery of the annular bulging wall P ′ of the pipe P of the embodiment. Rather than projecting from the inner wall of the cylindrical wall 8-4, the elastic cap member 8 is positioned on the outer peripheral side of the central thin portion 8-1 of the bottom portion 8-3 of the elastic cap member 8 and in the axial direction from the inner position of the connector body 1, 1 '. It extends inward, extends to the length corresponding to the distance from the rear end of the connector body 1, 1 'to the tip of the claw walls 5-1, 5'-1, and the claw wall A number (two in the illustrated embodiment) corresponding to the number of the above is provided.
When the elastic cap member 8 having such a release member 8-8 'is attached to the connector body 1, 1' as described above, the claw walls 5-1, 5'-1 of the socket bodies 5, 5 '. And the position of the release member 8-8 'are attached to the connector body in a state where the phase is shifted.
[0023]
Thus, the connection is completed by breaking the central thin part 8-1 of the elastic cap member and inserting the pipe P into the connector main body with the elastic cap member 8 attached to the connector main bodies 1 and 1 '. This is as described above. On the other hand, when the pipe P is released as desired after connection, the elastic cap member 8 is once moved in a direction to be removed from the connector bodies 1 and 1 ', and then the position of the release member 8-8' and the claw wall 5 are removed. In the state where the positions of −1, 5′-1 coincide with each other, the connector body 1, 1 ′ is pressed again in the direction in which the elastic cap member 8 is attached (see FIG. 10). The claw walls 5-1 and 5'-1 are expanded outward by the release member 8-8 'projecting into the elastic cap member by the pressing in the adhesion direction, and lifted up. The engagement pressure with the bulging wall P ′ is released, and the pipe P can be pulled out from the connector bodies 1, 1 ′.
Therefore, although not shown, it is preferable that a mark indicating the position of the release member 8-8 ′ is attached to the outer peripheral portion of the elastic cap member 8.
[0024]
Next, an embodiment in which the elastic cap member 8 is further made to function as a confirmation member for visually confirming whether or not the connection state of the pipe P to the connector body is used, and is used in combination with the above-described release member as necessary, is shown in FIGS. 15 will be described.
First, in the embodiment shown in FIG. 12, a cylindrical wall 8-10 extending in the radial direction is integrally provided on the cylindrical wall 8-4 of the elastic cap member 8, and the position of the cylindrical wall is set to the annular bulging wall P of the pipe P. Match with the position of ′. Then, a substantially prismatic confirmation member 9 made of an elastic body such as a synthetic resin having a slit 9-1 near one end and a tapered surface 9-2 at the other end in the inner hole 8-11 of the cylindrical wall 8-10. Press fit. The shape of the confirmation member 9 may be any shape such as a columnar shape or an elliptical column shape, but a rectangular column shape or an elliptical shape is preferable because the confirmation member does not rotate. The confirmation member 9 makes the tapered surface 9-2 face the rear end side of the connector body 1, 1 'and protrudes between the claw walls 5-1, 5'-1 and the bush member 7, and the slit 9 9-1 has a size that fits in the inner hole 8-11. In addition, when using the confirmation member concerning the connector for small diameter piping connection of the Example of FIG. 1, do not provide the protrusion wall 1-4 extended ahead in an axial direction from the outer end part of the elastic wall 1-2. To.
[0025]
The elastic cap member 8 inserted into the inner hole 8-11 of the cylindrical wall 8-10 is attached to the connector body 1, 1 'so that the confirmation member 9 having the shape as described above does not protrude to the inner periphery of the cylindrical wall 8-4. Then, the confirmation member 9 is press-fitted into the inner hole 8-11 so that the slit 9-1 is positioned in the cylindrical wall 8-10, and then the thin portion 8-1 of the elastic cap member 9 is broken to form a pipe. When the annular bulge wall P 'expands the claw walls 5-1, 5'-1 and the annular bulge wall P' passes through the claw wall, P is inserted into the connector body 1, 1 '. The connection is completed by returning to the original position by the elasticity of. At this time, the confirmation member 9 is pressed radially outward by the annular bulging wall P ′, and a part of the top portion protrudes from the upper end of the cylindrical wall 8-10. In this state, the top side of the confirmation member 9 opens from the slit 9-1 and is inclined (see FIG. 12B), so that it is possible to visually confirm that proper connection has been completed.
Storage after the confirmation member 9 is press-fitted in the inner hole 8-11 by providing a plurality of protrusions 9a, 9b on the outer peripheral surface of the central portion of the confirmation member 9 and the outer peripheral surface of the slit 9-1 side end, It is preferable to prevent the confirmation member from falling off during transportation or when the confirmation member 9 protrudes from the cylindrical wall 8-10. In this case, the heights of the projections 9a and 9b vary somewhat depending on the material, thickness, diameter, etc. of the elastic cap member 8 and the confirmation member 9, but are generally about 0.1 mm, and the axial direction between the projections Is slightly longer than the thickness of the cylindrical wall 8-11, and the number of the protrusions 9a and 9b can be selected as appropriate. In some cases, each can be formed in a ring shape.
[0026]
Another embodiment of the confirmation member used in the present invention will be described with reference to FIGS.
In this embodiment, a pair of cylindrical walls 8-10 and 8-10 'extending in the radial direction are integrally provided at opposite positions in the radial direction of the cylindrical wall 8-4 of the elastic cap member 8, and the cylindrical wall is provided. Are aligned with the position of the annular bulging wall P ′ of the pipe P, and the shape of the inner holes of the cylindrical walls 8-10 and 8-10 ′ is changed to the rectangular holes 8-11 ′. A continuous inner portion is formed in a round hole 8-11 ″.
On the other hand, the confirmation member 9 has a substantially C-shape as a whole, and is formed by protruding rod-like portions 9-3 and 9-3 'integrated at both ends so as to face each other. Corresponding to the shape of the inner hole described above, the cross section on the base side is formed in the square portion 9-4, the cross section on the front end side is formed in the round portion 9-5, and the tip portion has a tapered surface 9-6. It is what has.
[0027]
In this embodiment, the pair of rod-like portions 9-3 and 9-3 'of the confirmation member 9 having the above-described shape are press-fitted into the inner holes of the cylinder walls 8-10 and 8-10' to form the square-shape of the rod-like portion. The portion 9-4 is engaged with the square hole 8-11 ', the round portion 9-5 is engaged with the round hole 8-11 ", and the tapered surface 9-6 is provided on the rear end side of the connector body 1, 1'. The elastic cap member 8 is attached to the connector main bodies 1 and 1 'so that the piping P is used in the same manner as in FIG. Is connected to an appropriate position, the rod-like bodies 9-3 and 9-3 'of the check member 9 are pressed radially outward by the annular bulging wall P', and the rectangular portion 9- of the rod-like portion 9-3 is pressed. 4 is disengaged from the engagement with the square hole 8-11 'of the cylindrical wall 8-10, so that the substantially C-shaped confirmation member 9 can rotate around the round portion 9-5. Next, the proper connection has been made does not become visually only, it can be confirmed by contact by the hand.
[0028]
Further, another embodiment of the confirmation member used in the present invention will be described with reference to FIG.
Also in this embodiment, a pair of cylindrical walls 8-10 and 8-10 'extending in the radial direction are integrally provided at opposite positions in the radial direction of the cylindrical wall 8-4 of the elastic cap member 8, and the cylindrical wall is provided. The positions of the pipes P are made to coincide with the position of the annular bulging wall P ′ of the pipe P, and the shapes of the inner holes of the cylindrical walls 8-10 and 8-10 ′ are preferably formed as square holes 8-12. Is.
On the other hand, the confirmation member 9 is formed of an elastic body such as a synthetic resin having a substantially rounded rhombus shape as a whole, and is preferably integrated with end portions 9-7 and 9-7 'having a square cross section at both ends. It is formed, and has a pair of tapered walls 9-9 in the substantially rhombic opening 9-8 at the center. The opening 9-8 is formed such that the inner diameter on the short side is slightly larger than the diameter of the pipe P itself.
In this embodiment, the pair of cross-sections of the confirmation member 9 having the above-described shape is pressed into the square holes 8-12 of the cylinder walls 8-10 and 8-10 '. The taper wall 9-9 is disposed so as to face the rear end side of the connector body 1, 1 '. Thus, the confirmation member 9 assembled after the elastic cap member 8 is attached to the connector main bodies 1 and 1 ′ is annularly expanded when the pipe P is connected to an appropriate position in the same manner as in FIGS. 12 to 14. The substantially rhombic opening 9-8 of the confirmation member 9 is pressed and widened by the wall P 'in the radial direction, whereby the entire length of the confirmation member 9 is shortened, so that the tip portions 9-7 and 9-7' It is immersed in the hole 8-12, and it can be visually confirmed that proper connection is completed.
Note that 9-7'a is a slit provided at the tip 9-7, but this slit can be omitted as desired. In some cases, both the tips 9-7 and 9-7 ' It can also be provided in both.
[0029]
In the embodiment of the confirmation member shown in FIGS. 12 to 15, only the relationship between the confirmation member and the elastic cap member has been described. However, the release member 8-8 ′ shown in FIGS. You can also
In this case, the cylindrical walls 8-10 and 8-10 'and the claw-like release member 8-8' may be disposed so that the phases of the elastic cap member 8 are shifted. ° The phase is shifted.
In order to pull out the pipe P, it is necessary to remove the elastic cap member 8 once, and then attach it again with the positions of the claw walls 5-1 and 5-1 'coincident with the release member 8-8'. It is preferable that the confirmation member is configured to be detachable after the cap member 8 is reattached to the connector bodies 1 and 1 '.
Next, it is easy to form the cut 8-2 provided in the bottom 8-3 of the elastic cap member 8, and when the pipe P is inserted, when the front end breaks from the cut 8-2, the cut A plurality of defined wedges 10 ₁ 10 ₂ ... 10 _n In order to prevent the occurrence of various problems due to breakage of a part of the front end portion of the wire to become a fine piece and enter the inside of the connector main body 1, it is preferable to form a cut as shown in FIG.
[0030]
That is, the wedge-shaped portion 10 defined by the cut 8-2 formed in the bottom 8-3 of the elastic cap member 8. ₁ 10 ₂ ... 10 _n One of the front end portions is substantially circular as shown in FIG. 16 (a) defined by a cut 8-2 'provided at the center of the bottom portion 8-2 (that is, a circle with a part cut off) or a figure. A central portion 10 'of a substantially polygonal shape (that is, a polygon with a part missing) as in FIG. 16 (b) is formed integrally with the part with the lacking part. Thus, the bottom 8-3 will have a continuous, generally “shining shaved” shaped portion defined by the cuts 8-2, 8-2 ′.
[0031]
Further, as shown in FIG. 16C, the central portion 10 'is further provided with a cut 8-2 ", and the central portion 10' is defined by a plurality of small portions 10'a and 10'b by the cut. The portions 10'a and 10'b are respectively connected to the wedge-shaped portions 10 ₁ 10 ₂ ... 10 _n However, in this case, if the number of small portions is increased too much, the above-described problem of breakage when the pipe P is inserted may occur in this small portion. Therefore, it is preferably at most about 2 to 4.
[0032]
When the cut 8-2, 8-2 ′ or 8-2 ″ is formed in the bottom 8-3 as shown in FIG. 16, the elastic cap member 8 is attached to the connector body 1, 1 ′. The central portion 10 ′ and the small portions 10 ′ a, 10 ′ b are not positioned on the claw walls 5-1, 5-1 ′, but are held on the peripheral wall portion of the large diameter chamber 3 of the connector body 1 The reason is that the central portion 10 'or the small portions 10'a, 10'b defined by the cuts 8-2, 8-2' or 8-2 "are the nail walls 5-1, 5 This is because it is prevented from being sandwiched between -1 'and the annular bulging wall P'. For this purpose, it is desirable to provide appropriate holding means as in the embodiment of FIG.
In the above embodiment, the bottom 8-3 of the elastic cap member 8 is formed as a separate body as desired, and is bonded or welded after the cap member is attached to the connector body to form a bottomed cylindrical shape. The notch 8-2 can also be provided on the outer surface, the inner surface, or both surfaces of the bottom 8-3.
[0033]
【The invention's effect】
As described above, according to the present invention, it always has a dustproof effect regardless of before and after connection with the piping, and can be connected without any trouble in the connection work of the piping, and the piping can be easily made as necessary. It is possible to provide a connector for connecting a small-diameter pipe that can be released and can be visually checked for appropriateness of the connection state of the pipe.
[Brief description of the drawings]
1A and 1B are diagrams showing a connection state of an embodiment of a connector for connecting a small-diameter pipe according to the present invention, in which FIG. 1A is a half view in the longitudinal direction, and FIG. It is.
FIGS. 2A and 2B are diagrams showing an assembled state of an embodiment of an elastic cap member and a connector body used in the present invention, wherein FIG. 2A is a half view in the longitudinal direction, FIG. 2B is a bottom view of FIG. (C) is a partial semi-perpendicular view in the longitudinal direction shown by rotating the connector main body by 90 °.
FIGS. 3A and 3B are diagrams showing an embodiment of a single elastic cap member used in FIG. 1, in which FIG. 3A is a half view in the longitudinal direction, and FIG. 3B is a bottom view of FIG.
FIGS. 4A and 4B are diagrams showing another embodiment of the elastic cap member alone, in which FIG. 4A is a half-sectional view in the longitudinal direction, and FIG. 4B is a bottom view of FIG.
FIG. 5 is a semi-circular view showing a state in which the present invention is applied to a small diameter pipe connection connector according to another embodiment.
6A and 6B are views showing still another embodiment of the elastic cap member alone, in which FIG. 6A is a half view in the longitudinal direction, and FIG. 6B is a front view of FIG.
7A and 7B are views showing still another embodiment of the elastic cap member alone, in which FIG. 7A is a half view in the longitudinal direction, and FIG. 7B is a front view of FIG.
8 is a view corresponding to FIG. 1 showing a connection state when the elastic cap member of FIG. 6 is used, where (a) is a half view in the longitudinal direction, and (b) is a cross-sectional view taken along the line VIII-VIII of (a). It is.
FIG. 9 is a view showing an elastic cap member provided with another embodiment of a release member, showing a connection state of still another embodiment of the connector for connecting a small-diameter pipe of the present invention. FIG. FIG. 4B is a partial half-sectional view in the longitudinal direction showing the connector body rotated by 90 °.
FIGS. 10A and 10B are diagrams showing a released state of the connector for connecting a small-diameter pipe according to the embodiment of FIG. 9, wherein FIG. 10A is a half view in the longitudinal direction, and FIG. 10B is a longitudinal direction showing the connector body rotated by 90 °; FIG.
11 is a cross-sectional view of a single elastic cap member of the embodiment of FIG.
FIGS. 12A and 12B are diagrams showing still another embodiment of the connector main body of the present invention and showing an elastic cap member provided with an embodiment of a confirmation member, in which FIG. 12A is a half view in the longitudinal direction, and FIG. ) Is a side view of the confirmation member used alone, and FIG. 8C is a cross-sectional view of the elastic cap member used in FIG.
FIGS. 13A and 13B are views showing an elastic cap member according to another embodiment of the connector main body of the present invention and provided with another embodiment of the confirmation member, wherein FIG. 13A is a half view in the longitudinal direction, and FIG. The front view of the confirmation member single-piece | unit used by a), (c) is a side view of the confirmation member used by (a), (d) is a top view of the confirmation member used by (a).
14 is a cross-sectional view of a single elastic cap member provided with a confirmation member used in FIG.
FIGS. 15A and 15B are diagrams showing another embodiment of the connector body of the present invention and showing an elastic cap member provided with still another embodiment of the confirmation member, wherein FIG. 15A is a longitudinal half view, and FIG. The front view of the confirmation member single-piece | unit used by (a) is a side view of the confirmation member used by (a).
FIGS. 16A and 16B are diagrams showing another example of the shape of the cut provided in the bottom of the elastic cap member, and FIGS. 16A and 16B are bottom views of the respective examples. FIGS.
FIG. 17 is a half view of a conventional connector for connecting a small diameter pipe.
FIG. 18 is a half plan view showing an assembled state of a conventional elastic cap member and a connector main body.
FIGS. 19A and 19B are diagrams showing a single elastic cap shown in FIG. 11, in which FIG. 19A is a half view and FIG. 19B is a bottom view of FIG.
[Explanation of symbols]
1, 1 'Connector body
1-1 Notched window
1'-1 engagement hole
1'-2 hanging wall
1-2 bullet wall
1-3 Stepped part
1-4 Projection wall
2 Connecting cylinder wall
3, 3 'large diameter chamber
3-1 Small-diameter chamber
4 distribution holes
5, 5 'socket body
5-1, 5'-1 Claw wall
5'-2 bullet wall
6 Elastic seal ring member
7 Cylindrical bush member
8 Elastic cap member
8-1 Central thin part
8-2, 8-2 ', 8-2 "cut
8-3 Bottom
8-4 Cylindrical wall
8-5 Locking part
8-6 Multiple slits
8-7 Long slit
8-8, 8-8 'Claw-shaped release member
8-9 Hinge
8-10, 8-10 'cylinder wall
8-11 Inner hole
8-11 'square hole
8-11 ″ round hole
8-12 square hole
9 Confirmation member
9-1 Slit
9-2, 9-6 Tapered surface
9-3, 9-3 'Rod-shaped part
9-4 Square part
9-5 Round part
9-7, 9-7 'Tip
9-7'a slit
9-8 Opening
9-9 Tapered wall
9a, 9b Protrusion
10 ₁ 10 ₂ ... 10 _n Wedge-shaped part
10 'center part
10'a, 10'b small portion
P piping
P 'annular bulging wall

Claims

A seal ring member and a bush member are provided in the small-diameter chamber portion of the connector main body formed by penetrating the small-diameter chamber and the large-diameter chamber that extend in diameter in the shaft core and connected to the flow hole of the connecting cylindrical wall on the distal end side. A socket member having a resilient wall that is urged inward as a claw wall is provided in an engagement hole portion or a notch window portion provided in an opposing portion formed by a peripheral wall of the large-diameter chamber. A small-diameter pipe connection connector that is provided separately or integrally with the connector main body and is connected to the annular bulging wall portion on the pipe side to which the elastic wall is connected, extending radially from the center thereof, and An elastic cap member comprising a bottomed cylindrical body having a bottom portion in which a plurality of wedge-shaped portions defined by a plurality of cuts provided over a diameter greater than or equal to the outer diameter of the annular bulging wall of the pipe is formed; Covered from the rear end of the main unit Diameter pipe connection for the connector, which comprises surrounded by the cylindrical wall of the engaging hole portion or the notch window portion is.

A claw-like release member having a length corresponding to the distance from the rear end portion of the connector main body to the tip end portion of the resilient wall is provided on the bottom portion of the elastic cap member so as to protrude in the axial direction. The small diameter pipe connector according to claim 1.

3. The connector for connecting a small-diameter pipe according to claim 1, wherein a plurality of slits starting from the open end and extending in the axial direction are provided in the cylindrical wall of the elastic cap member.

Inside the shaft core, a seal ring member and a bush member are provided in the small diameter chamber portion of the connector body formed by penetrating a small diameter chamber and a large diameter chamber that are continuous with the flow hole of the connecting cylindrical wall on the distal end side. The notched window portion provided at the facing part formed by the peripheral wall of the large-diameter chamber is provided in the interior and has a bent portion inclined inward near the middle as a nail wall. a bullet Hatsukabe biased towards, pipe socket member having a protruding wall extending in the axial direction than the outer end portions of the elastic Hatsukabe, provided integrally with the connector body is connected with the bullet Hatsukabe A small-diameter pipe connection connector that is connected to the annular bulging wall portion of the pipe by being urged to extend radially from the center and provided over a diameter greater than or equal to the outer diameter of the annular bulging wall of the pipe A bottom formed with a plurality of wedge-shaped portions defined by the cuts; and An elastic cap member made of a bottomed cylindrical body having a claw-like release member and a cylindrical wall projecting on the inner wall so as to extend in the tangential direction of the outer periphery of the annular bulging wall of the pipe is formed in two in the radial direction. A connector for connecting a small-diameter pipe, wherein the connector is attached to an outer peripheral portion of the connector body, and the notch window portion is surrounded by the cylindrical wall.

5. The connector for connecting a small-diameter pipe according to claim 1, wherein a locking portion that engages with a step portion of an outer peripheral portion of the connector main body is provided at an open end portion of the elastic cap member.

5. A connector for connecting a small-diameter pipe according to claim 1, wherein a thin-walled central portion that substantially matches the outer diameter of the pipe is provided at the bottom of the elastic cap member.

2. One of the front ends of the wedge-shaped portion defined by the cut is continuous with a substantially circular or polygonal central portion defined by a cut provided in the central portion of the bottom. Or the connector for thin diameter piping connection of 4.

8. The connector for connecting a small-diameter pipe according to claim 7, wherein the central portion is further defined by a plurality of small portions by cuts, and each of the small portions is continuous with a separate tip portion of the wedge-shaped portion. .

5. The small diameter pipe connecting connection according to claim 1, wherein the cylindrical wall of the elastic cap member is provided with a confirmation member that engages with the annular bulging wall of the pipe and enters and exits in a radial direction. connector.