【０００１】
【発明の属する技術分野】
本発明は、自動車或いは各種の機械や装置に設けられた、配管やチューブを接続するコネクタに関するものである。
【０００２】
【従来の技術】
例えば、自動車の燃料系の配管は、多数の装置同士を複数の管体を使用して接続させている。その接続は複数箇所有る為、円滑かつ迅速に接続する必要があり、その為コネクタを使用する事が多い。その様な従来例として図２２に示す様なコネクタが知られている。簡単にそのコネクタを説明すると、コネクタ１００は、本体部１０１とリテーナ１０２から成り、本体部１０１の一端部には、チューブＴを接続する略竹の子状の接続部１０３が形成され、もう一端部には、配管Ｐを挿入可能とする挿入孔部１０４が形成される。そして本体部１０１の内周部には、挿入した配管Ｐと本体部１０１をシールするシール材（不図示）及びそのシール材を取り付けるカラー（不図示）が設けられる。そして本体部１０１の外周面部には、挿入した配管Ｐを抜け止めするリテーナ１０２を、取り付ける為の取付孔部１０５が設けられる。又前記リテーナ１０２には、配管Ｐの外周面に張り出し形成されたバルジ部１０６と係合する抜止片１０７が設けられる。
【０００３】
前記の様に構成されたコネクタ１００について、コネクタ１００の本体部１０１の接続部１０３にはチューブＴが嵌合され、挿入部１０４には配管Ｐが挿入される。その後、本体部１０１の側面部に設けられた取付孔部１０５へリテーナ１０２を取り付ける事により、リテーナ１０２の抜止片１０７と配管Ｐのバルジ部１０６が係合して、本体部１０１と配管Ｐは接続される。そして、これによりチューブＴと配管Ｐは接続される。
【０００４】
【特許文献１】
特表平１０−５０９２３２公報
【０００５】
【発明が解決しようとする課題】
しかしながらこの様な従来の技術においては、次の様な問題が有った。それは、最近の自動車のエンジンルーム内は、各種装置が所狭しと配置されている。そしてその隙間を縫う様に、配管Ｐへコネクタ１００が取り付けられる。しかし修理やメンテナンスの為に、配管Ｐからコネクタ１００を取り外す際において、コネクタ１００の径方向の周辺部には十分なスペースが無い為、手や工具を入れて操作するスペースが十分に取れず、その為、コネクタ１００の側部に取り付けられた、配管Ｐを抜け止めしているリテーナ１０２を操作する事が困難である。具体的には、配管Ｐとリテーナ１０２との係合解除は、コネクタ１００の径方向から、手や工具によってリテーナ１０２を操作する事により、リテーナ１０２を径方向へ移動させて、配管Ｐとの係合を解除させるが、その操作スペースが狭い事から、リテーナ１０２の径方向への操作がし難く、その為リテーナ１０２の移動ができない事から、配管Ｐからコネクタ１００を取り外せない事があった。又、前記エンジンルーム内において、直接目視できない所へも、コネクタ１００は取り付けられるが、そのコネクタ１００を配管Ｐから取り外す際、手探りによるめくら作業となる為、リテーナ１０２の位置が分からない事から、リテーナ１０２の操作が困難となり、配管Ｐからコネクタ１００を取り外す事が困難であった。
【０００６】
本発明は、従来技術の有する前記問題を鑑みて開発されたものであり、狭いスペースや直接目視できない所へも、配管からコネクタを取り外す作業が容易に行なえるコネクタを提供する事を目的とするものである。
【０００７】
【課題を解決するための手段】
本発明は上記目的を達成する為、チューブと配管を接続するコネクタであって、チューブを取り付ける本体部材と、配管を挿入して取り付ける保持部材と、前記保持部材を覆うカバー部材から成り、前記本体部材は、その一方に、チューブを取り付ける接続部が設けられ、もう一方には、前記保持部材を取り付ける取付部が形成され、又内周部には、前記保持部材を取り付けた際、本体部材の内周部と配管とをシールするシール材が取り付けられ、前記保持部材には、前記本体部材と接続する連結部と、配管を挿入可能とする挿入部が形成され、更に前記保持部材の側面部には、挿入される配管の外周面に張り出し形成されたバルジ部と係合して、この配管の抜け止めを行なう抜止片と、前記カバー部材の係合及び移動を案内する溝部が形成され、前記カバー部材には、前記本体部材を突出可能とする突出孔部と、前記保持部材の抜止片の撓みを規制する覆面部と、前記保持部材の溝部へ係合する係合片が形成されている事を特徴とするコネクタである。
【０００８】
【発明の作用及び効果】
本発明において、チューブと配管を接続する際には、先ずコネクタの本体部材の接続部へチューブを嵌合させる。次にコネクタの保持部材の挿入部へ配管を挿入して、保持部材の抜止片と配管に設けられたバルジ部を係合させる。その後、本体部材に位置しているカバー部材を、保持部材に形成された溝部に沿って、軸方向へスライドさせる。それによりカバー部材は保持部材側へ移動し、カバー部材の覆面部は、保持部材の外周部を移動して、保持部材の抜止片の撓みを規制する為、コネクタと配管は抜け止めされる。上記の様に取り付けられたコネクタについて、配管からコネクタを取り外す際は、先ずコネクタのカバー部材を、保持部材に形成された溝部に沿って径方向へ回転させる。次に前記カバー部材を、本体部材の位置まで、前記溝部に沿って軸方向へスライドさせる。それによりカバー部材の覆面部は、保持部材の抜止片の撓みを規制する位置から移動する為、前記抜止片は、撓み変形可能となる。その後、コネクタを軸方向へ移動させる事により、前記抜止片が撓んで、配管のバルジ部から外れる為、コネクタを配管から引き抜く事ができる。
【０００９】
この様にカバー部材の軸方向への移動のみで、コネクタと配管とが接続でき、又、カバー部材を回転及び軸方向への移動にて、配管からコネクタを取り外す事ができるので、コネクタの径方向の周辺部にスペースが無い様な狭い場所でも、容易に取り外し作業ができる上、コネクタを直接目視できない様な場所でも、手探りで容易にコネクタの取り外し作業が行なえる。
【００１０】
【発明の実施の形態】
以下、本発明の実施の形態について図面を参照しながら説明する。この実施の形態では、自動車の燃料配管系のチューブＴと配管Ｐを接続させる部分に使用されるコネクタを例にとって説明する。又、配管Ｐは金属製のものが使用され、その先端寄りの位置には、全周にわたって鍔状に張り出し形成されたバルジ部１が設けられる。
【００１１】
本発明のコネクタ２は、図１に示す様に、本体部材３と保持部材５とカバー部材６から構成される。そして本体部材３の内周部には、シール材４が取り付けられる。
【００１２】
先ず本体部材３から説明する。本体部材３は図１及び図２に示す様に、略竹の子状に形成される。その一端部は小径に形成され、その外周面にはチューブＴが取り付けられ、又、内周部には燃料を流通させる流通路２４が形成された接続部２１が設けられる。もう一端部は大径に形成され、後述する保持部材５を取り付ける取付部２２が設けられる。そしてその取付部２２の内周部には、保持部材５を係合する係合凹溝２５が設けられ、取付部２２の外周部には、その端部へ、後述するカバー部材６を、配管Ｐ側の軸方向へ移動させた際、その移動の終点とする鍔状のフランジ部２３が設けられる。又本体部材３の中間部２６は、両端部と比較して中径に形成され、その内周部には、コネクタ２の本体部材３の内周部へ配管Ｐを挿入した際、その配管Ｐの外周面と本体部材３の内周面とに接触してシールするリング状のシール材４が取り付けられる。
【００１３】
次に保持部材５について説明する。保持部材５は図１及び図３から図１０に示す様に略筒状に形成される。その一端部は、前記本体部材３の取付部２２内へ係合される様に小径に形成された係合部３１が設けられる。この係合部３１は、本発明で言う連結部に相当するが、以下、係合部３１と記す。そしてその係合部３１の外周面には、前記本体部材３の係合凹部溝２５と係合して、本体部材３と保持部材５を係合させる為の係合凸部３３が円周方向へ突出形成される。又もう一端部は、配管Ｐを挿入可能とする挿入部３２が設けられる。そして保持部材５の側面部には、図４に示す様に、略コ字状のスリット部３９を形成する事により、分断形成された抜止片３４が設けられる。抜止片３４は、保持部材５の軸中心を点対称とした位置に二箇所設けられる。更に抜止片３４は、図５に示す様に、保持部材５の側面部の厚さより若干薄く形成される事により、更に撓み易くされる。そしてその抜止片３４の内側先端部寄りの位置には、図５に示す様に、配管Ｐのバルジ部１と係合する係合爪部３６が設けられ、更にその係合爪部３６には、配管Ｐのバルジ部１が係合する際の案内をするテーパ状の係合案内部３７と、配管Ｐのバルジ部１との係合を解除する際の案内をするテーパ状の解除案内部３８が設けられる。又、抜止片３４の外側先端部寄りの位置には、円柱状の規制突部３５が設けられる。その規制突部３５の端面は、図５に示す様に、抜止片３４が自由状態において、保持部材５の側面部とほぼ同一高さになる様に設定される。
【００１４】
更に、保持部材５の側面部の両抜止片３４の間には、図３に示す様に、後述するカバー部材６の移動を案内する溝部４０が設けられる。溝部４０は、抜止片３４と同様に、保持部材５の軸中心を点対称とした位置に二箇所設けられる。溝部４０には、保持部材５へ仮止めされた、後述するカバー部材６を保持部材５へ仮止めさせる事と、その仮止めから本止めとする溝部４０は、長方形状に形成される。その溝部４０において、カバー部材６を本止めする位置へ案内する係合溝部４１と、本止めされたカバー部材６を仮止め位置へ戻す解除溝部４２が、並行する様に形成され、その両溝部の間には、カバー部材６の移動の途中で、隣合う溝部へ移動しない様にする壁部４３が設けられる。
【００１５】
前記係合溝部４１の係合部３１側の一端部には、図３及び図９に示す様に、後述するカバー部材６の係合片５４が係合する事により、カバー部材６がコネクタ２の本体部材３の径方向外方の位置に仮止めさせておく為の、仮止孔部４４が設けられる。又係合溝部４１の挿入部３２側の一端部には、カバー部材６の係合片５４が係合する事により、カバー部材６がコネクタ２の保持部材５の径方向外方の位置に本止めさせる為の本止溝部４５が設けられる。更に係合溝部４１の仮止孔部４４と本止溝部４５の間には、仮止孔部４４から本止溝部４５へ前記カバー部材６の係合片５４を案内するテーパ状の第一案内面４６と前記係合片５４が係合溝部４１上に止まる事を防止するテーパ状の第二案内面４７が設けられる。又解除溝部４２には、図３及び図１０に示す様に、その両端部にテーパ面に形成された案内部４８が設けられる。この案内部４８について、前記仮止孔部４４と隣接する案内部４８は、解除溝部４２に沿って移動してきた後述するカバー部材６の係合片５４の係合爪部５５を、容易に仮止孔部４４へ移動させる事ができる。又本止溝部４５と隣接する案内部４８は、本止溝部４５へ係合していたカバー部材６の係合片５４の係合爪部５５を、本止溝部４５から解除溝部４２へ、容易に円周方向へ移動させる事ができる。
【００１６】
次にカバー部材６について説明する。カバー部材６は図１及び図１１から図１３に示す様に、略円環状に形成され、その側部は、覆面部５１とされる。そして覆面部５１の内径は、前記保持部材５の外径とほぼ同径に形成される。それによりカバー部材６は、その内部へ前記保持部材５を収容可能とされる。又カバー部材６のもう一端部には、抜止壁部５３が設けられる。前記抜止壁部５３の内径は、前記本体部材３のフランジ部２３よりは小径で、且、取付部２２とはほぼ同径に形成される事により、取付部２２を突出可能とする突出孔部５２が設けられる。
【００１７】
又カバー部材６の一端面には、図１１に示す様に、略Ｌ字状の切欠部５７を設ける事により、係合片５４が形成される。そして係合片５４は、カバー部材６の軸中心を点対称とした位置に二箇所設けられる。前記係合片５４は、径方向への弾性変形が可能に形成され、その端部の軸中心方向には、図１２及び図１３に示す様に、係合爪部５５が設けられる。更に前記係合爪部５５には、カバー部材６の開放端側である軸方向の面及び、前記保持部材５の案内部４８と当接する方向である円周方向の面に、テーパ状のスライド面５６が、それぞれ形成される。開放端側のスライド面５６は、保持部材５の仮止孔部４４と係合爪部５５との係合を解除させる際、そのスライド面５６と仮止孔部４４の縁部が当接する事により、容易に係合解除の為の軸方向への移動が行なえる。又保持部材５の案内部４８と当接する面に形成されたスライド面５６は、保持部材５の本止溝部４５と係合爪部５５との係合を解除させる際、そのスライド面５６と本止溝部４５の縁部が当接する事により、容易に円周方向への移動が行なえる。
【００１８】
次に前記の様に構成されたコネクタ２の配管Ｐへの、取り付け取り外しについて説明する。
【００１９】
まずコネクタ２について、その本体部材３へはシール材４が取り付けられる。これは本体部材３の中間部２６の内周部へ、シール部材４が配置される事である。次に前記本体部材３へ、保持部材５が取付けられる。これは本体部材３の取付部２２の内側へ保持部材５の係合部３１を挿入する事により、本体部材３の係合凹溝２５と保持部材５の係合凸部３３が係合する事により、一体に接続される。その際シール材４は、保持部材５の係合部３１の端部により、本体部材３の取付部２２の内側へ、抜け止めされる。
【００２０】
次に上記本体部材３へカバー部材６が取付けられる。前記カバー部材６は、係合片５４が設けられた側の開放端側から、本体部材３の接続部２１を嵌め込み、カバー部材６の係合片５４が保持部材５へ達するまで、軸方向へ移動させる。そして、カバー部材６の係合片５４が保持部材５へ達したら、前記係合片５４を、保持部材５の溝部４０に設けた仮止孔部４４へ係合させる。これによりカバー部材６は、コネクタ２においての仮り止め状態となり、カバー部材６の係合片５４と保持部材５の仮止孔部４４との係合により、カバー部材６は、回転及び移動は規制される。その後、コネクタ２の本体部材３の接続部２１へ、チューブＴが、圧入により接続される。
【００２１】
次に上記状態のコネクタ２において、配管Ｐを取り付ける事について、図１４から図２１に従って説明する。まず配管Ｐは、図１４及び図１５に示す様に、コネクタ２の保持部材５の挿入部３２へ、配管Ｐのバルジ部１がコネクタ２の保持部材５の抜止片３４と当接するまで挿入される。この時配管Ｐの先端部は、本体部材３へ取り付けられたシール材４の内周部を通過する為、そのシール材４により、本体部材３の内周部と配管Ｐの外周部がシールされる。前記当接後、更に配管Ｐを押し込む事により、配管Ｐのバルジ部１は、コネクタ２の前記保持部材５の抜止片３４に設けられた係合案内部３７により、抜止片３４を径方向外方へ押し拡げながら、更に押し込まれる。そして、抜止片３４は、前記バルジ部１が係合爪部３４を通過するに従って、その自らの弾性復帰力により復帰されて、バルジ部１と抜止片３４の係合爪部３６とが係合する。その係合と同時に、配管Ｐのバルジ部１は、保持部材５の溝部４０の仮止孔部４４へ係合しているカバー部材６の係合片５４に設けられた係合爪部５５と当接する。更に配管Ｐが押し込まれる事により、図１６及び図１７に示す様に、バルジ部１は、係合爪部５５の軸方向に設けられたスライド面５６にて、係合片５４を径方向外方へ撓ませて係合爪部５５と保持部材５の仮止孔部４４との係合を解除させる。
【００２２】
上記の様に、コネクタ２へ配管Ｐを正規の位置まで挿入されると、保持部材５の抜止片３４は配管Ｐのバルジ部１と係合し、カバー部材６の係合片５４は、保持部材５の仮止孔部４４との係合を解除する。
【００２３】
その後、図１８及び図１９に示す様に、カバー部材６を保持部材５側の軸方向へ移動させる。この時、カバー部材６の係合片５４は、係合爪部５５と仮止孔部４４との係合が解除されており、且、その係合片５４の軸方向に設けられた係合爪部５５のスライド面５６と保持部材５の仮止孔部４４の縁部が当接する事により、容易に係合片５４が径方向外方へ撓む為、軸方向への移動を容易に行なう事ができる。更にカバー部材６を移動させる事により、カバー部材６の係合片５４の係合爪部５５は、保持部材５の溝部４０に設けられた係合溝部４１の第一案内面４６及び、第二案内面４７を通過する。この時の第一案内面４６の働きは、仮にカバー部材６の係合爪部５５と保持部材５の第一案内面４６との当接状態で、カバー部材６の移動力が止まった時、カバー部材６の係合片５４の弾性力及び、第一案内面４６の傾斜により、係合爪部５５を、元の仮止孔部４４へ戻す働きをして、カバー部材６の移動が、途中で止まる事を防止する。又、第二案内面４７の働きは、仮にカバー部材６の係合爪部５５と保持部材５の第二案内面４７との当接状態で、カバー部材６の移動力が止まった時、カバー部材６の係合片５４の弾性力及び第二案内面４７の傾斜により、係合爪部５５を更に先へ進める働きをして、カバー部材６の移動が途中で止まる事を防止する。又、係合溝部４１の側部に設けられた壁部４３は、隣の解除溝部４２へ不意にカバー部材６の係合爪部５５が移動する事を規制している。
【００２４】
その後、更にカバー部材６を移動させ、カバー部材６の係合爪部５５を、保持部材５の溝部４０に設けられた本止溝部４５へ係合させる。この時、カバー部材６に設けられた抜止壁部５３と本体部材３に設けられたフランジ部２３とが当接し、カバー部材６の移動が規制される事により、カバー部材６は、それ以上軸方向へ移動しない為、保持部材５からカバー部材６は外れない。
【００２５】
上記係合により、カバー部材６は、保持部材５の外周面を覆う様に配置される。それにより、保持部材５の抜止片３４の撓みは、そこに設けられた規制突起３５と、カバー部材６の内周部とが当接する事により規制される事から、配管Ｐは確実に抜け止めされる。
【００２６】
又仮に配管Ｐがコネクタ２の保持部材５へ挿入されたものの、正規の位置まで到達されていない場合、配管Ｐのバルジ部１は、コネクタ２の保持部材５の仮止孔部４４へ係合しているカバー部材６の係合片５４の係合爪部５５と当接しない為、カバー部材６の係合爪部５５と保持部材５の仮止孔部４４との係合は解除されない為、カバー部材６は、保持部材５側の軸方向へ移動しない。
【００２７】
上記の様に、コネクタ２を配管Ｐへ取り付ける作業において、カバー部材６は、コネクタ２内へ配管Ｐが正規の位置まで挿入されて、確実に抜け止めされた時は、カバー部材６は、コネクタ２の保持部材５上に配置される。しかしコネクタ２へ配管Ｐが挿入されていない時、又はコネクタ２内の正規の位置まで挿入されていない時は、本体部材３上に配置されたままとなる為、カバー部材６は、チェッカーの働きをし、その配置を目視にて確認する事により、コネクタ２と配管Ｐの係合状態が確認できる。
【００２８】
又、配管Ｐへコネクタ２を挿入後、径方向からの操作を必要とせず、カバー部材６を軸方向へ移動させるのみで取り付け作業が行なえる為、取り付けスペースが、コネクタ２の径方向の周辺部にスペースが無い様な狭い場所でも、確実に取り付けられる上、その取り付け操作も容易である。
【００２９】
更にカバー部材６は、保持部材５に設けられた溝部４０に沿って移動させる上、その溝部４０及び、カバー部材６の係合爪部５５に設けられた各案内面により、カバー部材６の係合爪部５５が容易に係合及び係合解除ができるので、正確で軽い移動操作ができる。
【００３０】
次に上記取り付け状態において、配管Ｐからコネクタ２を取り外す事について説明する。まずコネクタ２のカバー部材６を、図１９において、円周方向を反時計回りへ回転させる。これにより、カバー部材６の係合爪部５５は、その係合爪部５５の円周方向に設けられたスライド面５６と、保持部材５の溝部４０の本止溝部４５の縁部とが当接する事により、円周方向へ移動が可能となり、カバー部材６の係合爪部５５は、図２０及び図２１に示す様に、本止溝部４５に隣接する案内部４８へと移動する。その後カバー部材６を軸方向へ移動させる事により、カバー部材６の係合爪部５５は、案内部４８から、解除溝部４２を通って保持部材５の仮止孔部４４に隣接する案内部４８へ到達する。到達後、カバー部材６を、図２１において、円周方向を時計回りに回転させる事により、カバー部材６の係合爪部５５は、保持部材５の仮止孔部４４へと移動する。これによりカバー部材６は、コネクタ２の保持部材５から本体部材３上に移動される為、保持部材５の抜止片３４は撓み変形可能となる。
【００３１】
その後、配管Ｐからコネクタ２を引き抜くと、コネクタ２の保持部材５に設けられた抜止片３４は、係合爪部３６に設けられた解除案内部３８によりガイドされて、配管Ｐの初期のバルジ部１の移動に伴って、径方向外方へ撓み変形し、抜止片３４の係合爪部３６と配管Ｐのバルジ部１との係合が解除される。これにより配管Ｐからコネクタ２が取り外し可能となる。
【００３２】
上記の様に配管Ｐからコネクタ２を取り外す際、カバー部材６を回転及び軸方向へ移動させるのみで可能であり、径方向からの操作を必要としないので、狭いスペースでの取り外し作業が容易である。更にコネクタ２の取り外し作業は、保持部材５の外周部へ配置されたカバー部材６を操作する為、直接目視できない様な、入り組んだ場所にコネクタ２が取り付けられていても、コネクタ２の保持部材５付近を摘むのみで、カバー部材６を操作できるので、確実に取り外し作業が行う事ができる。更にコネクタ２には、その保持部材５へ、カバー部材６の係合片５４の係合爪部５５の移動を案内する溝部４０及び、その溝部４０内へ、係合爪部５５の係合を案内する各案内面を設けた事により、カバー部材６の移動が正確な方向へ移動させる事ができると伴に、前記係合爪部５５の係合及び、その係合の解除が、小さな力で確実に行なう事ができる。
【００３３】
本発明は、前記実施の形態に限定されるものではなく、本発明の要旨を逸脱しない範囲における変更が、下記の如く可能である。
▲１▼ 保持部材５に抜止片３４は、一体に形成されているが、抜止片３４を別部品で形成し、保持部材５へ取り付ける事が可能である。
▲２▼ 保持部材５には、抜止片３４及び溝部４０は、二箇所づつ形成されているが、一箇所づつ、又は三箇所づつ以上形成されていても良い。
▲３▼ 保持部材５の溝部４０に設けられた、係合溝部４１と解除溝部４２を分断する壁部４３について、係合溝部４１と解除溝部４２とは段差があるため省略可能であり、又、係合溝部４１に設けられる第一案内面４６及び第二案内面４７も省略可能である。
▲４▼ 保持部材５の溝部４０に設けられた本止溝部４５は、孔状に形成して本止孔部としても可能である。この時、カバー部材６の係合片５４の係合爪部５５は、本止孔部と係合した際、その孔縁と当接する事により、カバー部材６は、保持部材５から外れ止めされれば、カバー部材６に設けられる抜止壁部５３及び、本体部材３に設けられるフランジ部２３は省略可能である。
▲５▼ 本体部材３と保持部材５は、保持部材５に設けられた係合部３１を、本体部材３と係合させて接続しているが、係合のみでなく、接着や圧入等にて接続する事も、本発明の技術範囲に含まれる。
【図面の簡単な説明】
【図１】本発明のコネクタの分解斜視図
【図２】本体部材の断面図
【図３】保持部材の正面図
【図４】保持部材の平面図
【図５】保持部材における図１のＩ−Ｉ断面図
【図６】保持部材における図３のＩＩ−ＩＩ断面図
【図７】保持部材における図３のＩＩＩ−ＩＩＩ断面図
【図８】保持部材における図３のＩＶ−ＩＶ断面図
【図９】保持部材における図３のＶ−Ｖ部分断面図
【図１０】保持部材における図３のＶＩ−ＶＩ部分断面図
【図１１】カバー部材の正面図
【図１２】カバー部材の側面図
【図１３】カバー部材の断面図
【図１４】コネクタへ配管が挿入される断面図
【図１５】コネクタへ配管が挿入される側面図
【図１６】コネクタへ配管が正規の位置まで挿入された断面図
【図１７】コネクタへ配管が正規の位置まで挿入された側面図
【図１８】コネクタへ配管が抜け止めされた断面図
【図１９】コネクタへ配管が抜け止めされた側面図
【図２０】配管を抜け止めしたコネクタについて、そのカバー部材を回転させた断面図
【図２１】配管を抜け止めしたコネクタについて、そのカバー部材を回転させた側面図
【図２２】従来例のコネクタの分解斜視図
【符号の説明】
Ｐ 配管
１ バルジ部
２ コネクタ
３ 本体部材
４ シール部材
５ 保持部材
６ カバー部材
３１ 係合部
３４ 抜止片
３５ 規制突部
３６ 係合爪部
３９ スリット部
４０ 溝部
４１ 係合溝部
４２ 解除溝部
４３ 壁部
４４ 仮止孔部
４５ 本止溝部
４８ 案内部
５１ 覆面部
５４ 係合片
５５ 係合爪部
５６ スライド面[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connector for connecting pipes and tubes provided in an automobile or various machines and devices.
[0002]
[Prior art]
For example, a fuel system pipe of an automobile connects a large number of devices using a plurality of pipes. Since there are a plurality of connections, it is necessary to connect them smoothly and quickly. For this reason, connectors are often used. As such a conventional example, a connector as shown in FIG. 22 is known. The connector 100 will be briefly described. The connector 100 includes a main body 101 and a retainer 102, and an end portion of the main body 101 is formed with a connection portion 103 having a substantially bamboo shape connecting the tube T, and the other end. Is formed with an insertion hole 104 into which the pipe P can be inserted. A sealing material (not shown) for sealing the inserted pipe P and the main body 101 and a collar (not shown) for attaching the sealing material are provided on the inner peripheral portion of the main body 101. A mounting hole 105 for mounting the retainer 102 that prevents the inserted pipe P from coming off is provided on the outer peripheral surface of the main body 101. Further, the retainer 102 is provided with a retaining piece 107 that engages with a bulge portion 106 that is formed on the outer peripheral surface of the pipe P.
[0003]
In the connector 100 configured as described above, the tube T is fitted into the connection portion 103 of the main body 101 of the connector 100, and the pipe P is inserted into the insertion portion 104. Thereafter, by attaching the retainer 102 to the attachment hole 105 provided in the side surface portion of the main body 101, the retaining piece 107 of the retainer 102 and the bulge portion 106 of the pipe P are engaged, and the main body 101 and the pipe P are connected to each other. Connected. Thereby, the tube T and the pipe P are connected.
[0004]
[Patent Document 1]
Japanese National Patent Publication No. 10-509232
[Problems to be solved by the invention]
However, such a conventional technique has the following problems. This is because various devices are arranged in the engine room of recent automobiles. And the connector 100 is attached to the piping P so that the clearance gap may be sewn. However, when removing the connector 100 from the pipe P for repair or maintenance, there is not enough space in the peripheral portion of the connector 100 in the radial direction, so there is not enough space to operate with hands and tools. Therefore, it is difficult to operate the retainer 102 attached to the side portion of the connector 100 and preventing the pipe P from coming off. Specifically, the disengagement between the pipe P and the retainer 102 is performed by operating the retainer 102 from the radial direction of the connector 100 with a hand or a tool to move the retainer 102 in the radial direction. Although the engagement is released, since the operation space is narrow, it is difficult to operate the retainer 102 in the radial direction, and therefore the retainer 102 cannot be moved, so that the connector 100 may not be removed from the pipe P. . In addition, the connector 100 can be attached to the engine room where it cannot be directly seen. However, when removing the connector 100 from the pipe P, it is a blinding work, so the position of the retainer 102 is unknown. The operation of the retainer 102 becomes difficult, and it is difficult to remove the connector 100 from the pipe P.
[0006]
The present invention has been developed in view of the above-described problems of the prior art, and an object thereof is to provide a connector capable of easily removing a connector from a pipe even in a narrow space or a place where it cannot be directly observed. Is.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is a connector for connecting a tube and a pipe, comprising a main body member to which the tube is attached, a holding member to which the pipe is inserted and attached, and a cover member that covers the holding member. One of the members is provided with a connecting portion for attaching a tube, the other is provided with an attaching portion for attaching the holding member, and an inner peripheral portion of the main body member when the holding member is attached. A sealing material that seals the inner peripheral portion and the pipe is attached, and the holding member is formed with a connecting portion that is connected to the main body member, an insertion portion that allows the pipe to be inserted, and a side portion of the holding member. Is formed with a retaining piece that engages with a bulge formed on the outer peripheral surface of the pipe to be inserted to prevent the pipe from coming off, and a groove that guides the engagement and movement of the cover member. The cover member is formed with a projecting hole that allows the main body member to project, a cover surface that restricts the bending of the retaining piece of the holding member, and an engagement piece that engages with the groove of the holding member. It is a connector characterized by being made.
[0008]
Operation and effect of the invention
In this invention, when connecting a tube and piping, a tube is first fitted to the connection part of the main body member of a connector. Next, piping is inserted into the insertion portion of the holding member of the connector, and the retaining piece of the holding member is engaged with the bulge portion provided on the piping. Thereafter, the cover member positioned on the main body member is slid in the axial direction along the groove formed in the holding member. Thereby, the cover member moves to the holding member side, and the cover surface portion of the cover member moves on the outer peripheral portion of the holding member to restrict the bending of the retaining piece of the holding member, so that the connector and the pipe are prevented from coming off. When removing the connector from the pipe with respect to the connector attached as described above, first, the cover member of the connector is rotated in the radial direction along the groove formed in the holding member. Next, the cover member is slid in the axial direction along the groove to the position of the main body member. As a result, the cover portion of the cover member moves from a position that restricts the bending of the retaining piece of the holding member, so that the retaining piece can be bent and deformed. Thereafter, by moving the connector in the axial direction, the retaining piece is bent and detached from the bulge portion of the pipe, so that the connector can be pulled out from the pipe.
[0009]
In this way, the connector can be connected to the pipe only by moving the cover member in the axial direction, and the connector can be removed from the pipe by rotating and moving the cover member in the axial direction. The connector can be easily removed even in a narrow space where there is no space around the direction, and the connector can be easily removed by hand even in a location where the connector cannot be seen directly.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this embodiment, a description will be given by taking as an example a connector used in a portion where a tube T and a pipe P of a fuel piping system of an automobile are connected. Further, the pipe P is made of metal, and a bulge portion 1 that is formed in a hook shape over the entire circumference is provided at a position near the tip.
[0011]
As shown in FIG. 1, the connector 2 of the present invention includes a main body member 3, a holding member 5, and a cover member 6. A seal material 4 is attached to the inner peripheral portion of the main body member 3.
[0012]
First, the main body member 3 will be described. As shown in FIGS. 1 and 2, the main body member 3 is formed in a substantially bamboo-like shape. One end thereof is formed with a small diameter, a tube T is attached to the outer peripheral surface thereof, and a connecting portion 21 having a flow passage 24 through which fuel is circulated is provided on the inner peripheral portion. The other end is formed with a large diameter, and an attachment portion 22 for attaching a holding member 5 described later is provided. An engagement groove 25 for engaging the holding member 5 is provided on the inner peripheral portion of the attachment portion 22, and a cover member 6 described later is connected to the end portion of the outer periphery of the attachment portion 22. When moved in the axial direction on the P side, a bowl-shaped flange portion 23 is provided as an end point of the movement. Further, the intermediate portion 26 of the main body member 3 is formed to have a medium diameter as compared with both end portions, and when the pipe P is inserted into the inner peripheral portion of the main body member 3 of the connector 2, the pipe P A ring-shaped sealing material 4 is attached for sealing in contact with the outer peripheral surface of the main body member 3 and the inner peripheral surface of the main body member 3.
[0013]
Next, the holding member 5 will be described. The holding member 5 is formed in a substantially cylindrical shape as shown in FIGS. 1 and 3 to 10. One end thereof is provided with an engagement portion 31 formed to have a small diameter so as to be engaged into the attachment portion 22 of the main body member 3. The engaging portion 31 corresponds to the connecting portion referred to in the present invention, but is hereinafter referred to as the engaging portion 31. On the outer peripheral surface of the engaging portion 31, an engaging convex portion 33 for engaging with the engaging concave groove 25 of the main body member 3 to engage the main body member 3 and the holding member 5 is provided in the circumferential direction. Protrusively formed. The other end portion is provided with an insertion portion 32 into which the pipe P can be inserted. Further, as shown in FIG. 4, the holding member 5 is provided with a separation piece 34 that is divided and formed by forming a substantially U-shaped slit portion 39 as shown in FIG. 4. The retaining pieces 34 are provided at two positions where the axial center of the holding member 5 is point-symmetric. Further, as shown in FIG. 5, the retaining piece 34 is formed to be slightly thinner than the thickness of the side surface portion of the holding member 5, thereby making it easier to bend. As shown in FIG. 5, an engagement claw portion 36 that engages with the bulge portion 1 of the pipe P is provided at a position near the inner front end portion of the retaining piece 34. A tapered engagement guide portion 37 that guides when the bulge portion 1 of the pipe P is engaged, and a tapered release guide portion that guides when the engagement between the bulge portion 1 of the pipe P is released. 38 is provided. Further, a columnar restricting projection 35 is provided at a position near the outer front end of the retaining piece 34. As shown in FIG. 5, the end surface of the restricting projection 35 is set so that it is almost the same height as the side surface of the holding member 5 when the retaining piece 34 is in a free state.
[0014]
Further, as shown in FIG. 3, a groove portion 40 that guides the movement of the cover member 6 described later is provided between the two retaining pieces 34 on the side surface portion of the holding member 5. Similar to the retaining piece 34, the groove portion 40 is provided at two positions where the axial center of the holding member 5 is point-symmetric. In the groove portion 40, a cover member 6, which will be temporarily fixed to the holding member 5, is temporarily fixed to the holding member 5, and the groove portion 40 that is temporarily fixed to the groove member 40 is formed in a rectangular shape. In the groove portion 40, an engaging groove portion 41 that guides the cover member 6 to a position where the cover member 6 is permanently fixed and a release groove portion 42 that returns the permanently fixed cover member 6 to the temporary fixing position are formed in parallel. In the middle, a wall portion 43 is provided so as not to move to the adjacent groove portion during the movement of the cover member 6.
[0015]
As shown in FIGS. 3 and 9, an engagement piece 54 of a cover member 6 described later is engaged with one end of the engagement groove 41 on the engagement portion 31 side, whereby the cover member 6 is connected to the connector 2. A temporary fixing hole portion 44 is provided for temporarily fixing the main body member 3 at a position radially outward of the main body member 3. Further, the engagement member 54 engages with one end portion of the engagement groove portion 41 on the insertion portion 32 side so that the cover member 6 is positioned at a position radially outward of the holding member 5 of the connector 2. A main stop groove 45 for stopping is provided. Further, a tapered first guide for guiding the engaging piece 54 of the cover member 6 from the temporary fixing hole 44 to the main fixing groove 45 between the temporary fixing hole 44 and the main fixing groove 45 of the engaging groove 41. A tapered second guide surface 47 is provided to prevent the surface 46 and the engagement piece 54 from stopping on the engagement groove 41. Further, as shown in FIGS. 3 and 10, the release groove portion 42 is provided with guide portions 48 formed with tapered surfaces at both ends thereof. With respect to the guide portion 48, the guide portion 48 adjacent to the temporary fixing hole portion 44 easily moves the engagement claw portion 55 of the engagement piece 54 of the cover member 6, which will be described later, moved along the release groove portion 42. It can be moved to the stop hole portion 44. In addition, the guide portion 48 adjacent to the main groove portion 45 facilitates the engagement claw portion 55 of the engagement piece 54 of the cover member 6 engaged with the main groove portion 45 from the main groove portion 45 to the release groove portion 42. Can be moved in the circumferential direction.
[0016]
Next, the cover member 6 will be described. As shown in FIGS. 1 and 11 to 13, the cover member 6 is formed in a substantially annular shape, and its side portion is a cover surface portion 51. The cover portion 51 has an inner diameter that is substantially the same as the outer diameter of the holding member 5. Thereby, the cover member 6 can accommodate the holding member 5 therein. Further, a retaining wall 53 is provided at the other end of the cover member 6. An inner diameter of the retaining wall portion 53 is smaller than that of the flange portion 23 of the main body member 3 and substantially the same diameter as that of the mounting portion 22, thereby allowing the mounting portion 22 to protrude. 52 is provided.
[0017]
Further, as shown in FIG. 11, an engagement piece 54 is formed on one end surface of the cover member 6 by providing a substantially L-shaped notch 57. And the engagement piece 54 is provided in two places in the position which made the axial center of the cover member 6 point-symmetric. The engagement piece 54 is formed to be elastically deformable in the radial direction, and an engagement claw portion 55 is provided in the axial center direction of the end portion as shown in FIGS. 12 and 13. Further, the engaging claw portion 55 has a taper-shaped slide on an axial surface which is the open end side of the cover member 6 and a circumferential surface which is a direction in contact with the guide portion 48 of the holding member 5. Each surface 56 is formed. The slide surface 56 on the open end side is brought into contact with the edge of the slide surface 56 and the temporary fixing hole 44 when releasing the engagement between the temporary fixing hole 44 and the engaging claw 55 of the holding member 5. Thus, the movement in the axial direction for releasing the engagement can be easily performed. The slide surface 56 formed on the surface of the holding member 5 that comes into contact with the guide portion 48 is arranged so that the main stop groove portion 45 of the holding member 5 and the engagement claw portion 55 are disengaged from each other. When the edge portion of the stop groove portion 45 abuts, the movement in the circumferential direction can be easily performed.
[0018]
Next, attachment / detachment to / from the pipe P of the connector 2 configured as described above will be described.
[0019]
First, the sealing material 4 is attached to the main body member 3 of the connector 2. This is that the seal member 4 is disposed on the inner peripheral portion of the intermediate portion 26 of the main body member 3. Next, the holding member 5 is attached to the main body member 3. This is because when the engaging portion 31 of the holding member 5 is inserted inside the mounting portion 22 of the main body member 3, the engaging concave groove 25 of the main body member 3 and the engaging convex portion 33 of the holding member 5 are engaged. Thus, they are connected together. At that time, the sealing material 4 is prevented from coming off inside the attachment portion 22 of the main body member 3 by the end portion of the engaging portion 31 of the holding member 5.
[0020]
Next, the cover member 6 is attached to the main body member 3. The cover member 6 is fitted in the connecting portion 21 of the main body member 3 from the open end side on the side where the engagement piece 54 is provided, and axially until the engagement piece 54 of the cover member 6 reaches the holding member 5. Move. Then, when the engaging piece 54 of the cover member 6 reaches the holding member 5, the engaging piece 54 is engaged with the temporary fixing hole portion 44 provided in the groove portion 40 of the holding member 5. Accordingly, the cover member 6 is temporarily stopped in the connector 2, and the rotation and movement of the cover member 6 are restricted by the engagement between the engagement piece 54 of the cover member 6 and the temporary fixing hole portion 44 of the holding member 5. Is done. Thereafter, the tube T is connected to the connection portion 21 of the main body member 3 of the connector 2 by press-fitting.
[0021]
Next, the attachment of the pipe P in the connector 2 in the above state will be described with reference to FIGS. First, the piping P is inserted into the insertion portion 32 of the holding member 5 of the connector 2 until the bulge portion 1 of the piping P contacts the retaining piece 34 of the holding member 5 of the connector 2, as shown in FIGS. The At this time, since the tip end portion of the pipe P passes through the inner peripheral portion of the sealing material 4 attached to the main body member 3, the inner peripheral portion of the main body member 3 and the outer peripheral portion of the pipe P are sealed by the sealing material 4. The After the abutting, the bulge part 1 of the pipe P is pushed further by the engagement guide part 37 provided on the retaining piece 34 of the holding member 5 of the connector 2 by pushing the pipe P further. It is pushed in further while expanding. Then, as the bulge part 1 passes through the engaging claw part 34, the retaining piece 34 is restored by its own elastic restoring force, and the bulge part 1 and the engaging claw part 36 of the retaining piece 34 are engaged. To do. Simultaneously with the engagement, the bulge portion 1 of the pipe P is engaged with an engagement claw portion 55 provided on the engagement piece 54 of the cover member 6 engaged with the temporary fixing hole portion 44 of the groove portion 40 of the holding member 5. Abut. When the pipe P is further pushed in, as shown in FIGS. 16 and 17, the bulge part 1 causes the engagement piece 54 to move outward in the radial direction by the slide surface 56 provided in the axial direction of the engagement claw part 55. The engagement claw portion 55 and the temporary fixing hole portion 44 of the holding member 5 are released from the engagement.
[0022]
As described above, when the pipe P is inserted into the connector 2 to the proper position, the retaining piece 34 of the holding member 5 is engaged with the bulge portion 1 of the pipe P, and the engaging piece 54 of the cover member 6 is held. The engagement of the member 5 with the temporary fixing hole 44 is released.
[0023]
Thereafter, as shown in FIGS. 18 and 19, the cover member 6 is moved in the axial direction on the holding member 5 side. At this time, the engagement piece 54 of the cover member 6 is disengaged from the engagement claw portion 55 and the temporary fixing hole portion 44, and the engagement piece 54 is provided in the axial direction. Since the sliding surface 56 of the claw 55 and the edge of the temporary retaining hole 44 of the holding member 5 are in contact with each other, the engagement piece 54 is easily bent radially outward, so that the movement in the axial direction is easy. Can be done. Further, by moving the cover member 6, the engagement claw portion 55 of the engagement piece 54 of the cover member 6 causes the first guide surface 46 of the engagement groove portion 41 provided in the groove portion 40 of the holding member 5, and the second. It passes through the guide surface 47. The function of the first guide surface 46 at this time is, when the moving force of the cover member 6 stops when the engagement claw portion 55 of the cover member 6 and the first guide surface 46 of the holding member 5 are in contact with each other. Due to the elastic force of the engagement piece 54 of the cover member 6 and the inclination of the first guide surface 46, the engagement claw 55 is returned to the original temporary fixing hole 44, and the movement of the cover member 6 is Prevent stopping on the way. The function of the second guide surface 47 is that when the moving force of the cover member 6 stops when the engagement claw portion 55 of the cover member 6 and the second guide surface 47 of the holding member 5 are in contact with each other. Due to the elastic force of the engaging piece 54 of the member 6 and the inclination of the second guide surface 47, the engaging claw 55 is further advanced further to prevent the movement of the cover member 6 from stopping midway. Moreover, the wall part 43 provided in the side part of the engaging groove part 41 has controlled that the engaging claw part 55 of the cover member 6 moves to the adjacent release groove part 42 suddenly.
[0024]
Thereafter, the cover member 6 is further moved, and the engaging claw portion 55 of the cover member 6 is engaged with the main stop groove portion 45 provided in the groove portion 40 of the holding member 5. At this time, the retaining wall portion 53 provided on the cover member 6 and the flange portion 23 provided on the main body member 3 come into contact with each other, and the movement of the cover member 6 is restricted. Since it does not move in the direction, the cover member 6 cannot be removed from the holding member 5.
[0025]
By the above engagement, the cover member 6 is disposed so as to cover the outer peripheral surface of the holding member 5. Thereby, the bending of the retaining piece 34 of the holding member 5 is regulated by the contact between the regulating projection 35 provided on the retaining member 5 and the inner peripheral portion of the cover member 6. Is done.
[0026]
If the pipe P is inserted into the holding member 5 of the connector 2 but has not reached the proper position, the bulge part 1 of the pipe P is engaged with the temporary fixing hole 44 of the holding member 5 of the connector 2. Since the engagement claw 55 of the engagement piece 54 of the cover member 6 is not in contact, the engagement of the engagement claw 55 of the cover member 6 and the temporary fixing hole 44 of the holding member 5 is not released. The cover member 6 does not move in the axial direction on the holding member 5 side.
[0027]
As described above, in the operation of attaching the connector 2 to the pipe P, when the cover member 6 is inserted into the connector 2 to the proper position and securely removed, the cover member 6 2 on the holding member 5. However, when the pipe P is not inserted into the connector 2 or when it is not inserted to the proper position in the connector 2, the cover member 6 remains arranged on the main body member 3, so that the cover member 6 functions as a checker. The engagement state between the connector 2 and the pipe P can be confirmed by visually confirming the arrangement.
[0028]
Further, after the connector 2 is inserted into the pipe P, it is not necessary to operate from the radial direction, and the mounting work can be performed only by moving the cover member 6 in the axial direction. Even in a narrow place where there is no space in the part, it can be securely attached and its mounting operation is easy.
[0029]
Further, the cover member 6 is moved along the groove portion 40 provided in the holding member 5, and the engagement of the cover member 6 is achieved by the guide portions provided in the groove portion 40 and the engaging claw portion 55 of the cover member 6. Since the pawl portion 55 can be easily engaged and disengaged, an accurate and light movement operation can be performed.
[0030]
Next, removal of the connector 2 from the pipe P in the attached state will be described. First, the cover member 6 of the connector 2 is rotated counterclockwise in the circumferential direction in FIG. As a result, the engaging claw portion 55 of the cover member 6 is brought into contact with the slide surface 56 provided in the circumferential direction of the engaging claw portion 55 and the edge portion of the main stop groove portion 45 of the groove portion 40 of the holding member 5. By contact, it becomes possible to move in the circumferential direction, and the engaging claw portion 55 of the cover member 6 moves to the guide portion 48 adjacent to the main groove portion 45 as shown in FIGS. Thereafter, by moving the cover member 6 in the axial direction, the engaging claw portion 55 of the cover member 6 passes from the guide portion 48 through the release groove portion 42 and is adjacent to the temporary fixing hole portion 44 of the holding member 5. To reach. After reaching, the engagement claw portion 55 of the cover member 6 moves to the temporary fixing hole portion 44 of the holding member 5 by rotating the cover member 6 clockwise in FIG. As a result, the cover member 6 is moved from the holding member 5 of the connector 2 onto the main body member 3, so that the retaining piece 34 of the holding member 5 can be bent and deformed.
[0031]
Thereafter, when the connector 2 is pulled out from the pipe P, the retaining piece 34 provided in the holding member 5 of the connector 2 is guided by the release guide part 38 provided in the engaging claw part 36, and the initial bulge of the pipe P is obtained. Along with the movement of the portion 1, it is bent and deformed outward in the radial direction, and the engagement between the engagement claw portion 36 of the retaining piece 34 and the bulge portion 1 of the pipe P is released. As a result, the connector 2 can be removed from the pipe P.
[0032]
When removing the connector 2 from the pipe P as described above, it is possible only to rotate and move the cover member 6 in the axial direction, and it is not necessary to operate from the radial direction. is there. Further, the connector 2 is removed by operating the cover member 6 disposed on the outer peripheral portion of the holding member 5, so that even if the connector 2 is attached to an intricate place where it cannot be directly seen, Since the cover member 6 can be operated only by picking the vicinity of 5, the removal work can be performed reliably. Further, the connector 2 has a groove 40 that guides the movement of the engagement claw 55 of the engagement piece 54 of the cover member 6 to the holding member 5, and the engagement of the engagement claw 55 into the groove 40. By providing each guiding surface for guiding, the cover member 6 can be moved in an accurate direction, and at the same time, the engagement claw portion 55 can be engaged and released. Can be done reliably.
[0033]
The present invention is not limited to the above-described embodiment, and can be modified as follows without departing from the gist of the present invention.
(1) Although the retaining piece 34 is formed integrally with the holding member 5, the retaining piece 34 can be formed as a separate part and attached to the retaining member 5.
(2) The retaining member 34 and the groove portion 40 are formed in two places on the holding member 5, but may be formed one place or three places or more.
(3) The wall 43 that is provided in the groove 40 of the holding member 5 and divides the engagement groove 41 and the release groove 42 can be omitted because the engagement groove 41 and the release groove 42 have a step. The first guide surface 46 and the second guide surface 47 provided in the engagement groove portion 41 can also be omitted.
(4) The permanent groove 45 provided in the groove 40 of the holding member 5 can be formed as a hole and used as a permanent hole. At this time, when the engagement claw portion 55 of the engagement piece 54 of the cover member 6 engages with the permanent hole portion, the cover member 6 is prevented from coming off from the holding member 5 by coming into contact with the edge of the hole. Then, the retaining wall portion 53 provided on the cover member 6 and the flange portion 23 provided on the main body member 3 can be omitted.
(5) The main body member 3 and the holding member 5 are connected by engaging the engaging portion 31 provided on the holding member 5 with the main body member 3. It is also included in the technical scope of the present invention.
[Brief description of the drawings]
1 is an exploded perspective view of a connector of the present invention. FIG. 2 is a cross-sectional view of a main body member. FIG. 3 is a front view of a holding member. FIG. 4 is a plan view of a holding member. FIG. 6 is a cross-sectional view taken along the line II-II of FIG. 3 in the holding member. FIG. 7 is a cross-sectional view taken along the line III-III in FIG. 9 is a partial cross-sectional view taken along line VV of FIG. 3 in the holding member. FIG. 10 is a partial cross-sectional view taken along line VI-VI in FIG. 3 of the holding member. 13 is a cross-sectional view of the cover member. FIG. 14 is a cross-sectional view of the pipe inserted into the connector. FIG. 15 is a side view of the pipe inserted into the connector. [Fig.17] Side where the pipe is inserted into the connector to the proper position FIG. 18 is a cross-sectional view in which a pipe is prevented from coming off the connector. FIG. 19 is a side view in which the pipe is kept from coming off from the connector. FIG. 20 is a cross-sectional view in which the cover member is rotated. FIG. 21 is a side view of a connector whose piping is prevented from coming off, with its cover member rotated. FIG. 22 is an exploded perspective view of a conventional connector.
P Piping 1 Bulge part 2 Connector 3 Body member 4 Seal member 5 Holding member 6 Cover member 31 Engaging part 34 Detachment piece 35 Restriction protrusion 36 Engaging claw part 39 Slit part 40 Groove part 41 Engaging groove part 42 Release groove part 43 Wall part 44 Temporary stop hole portion 45 Main stop groove portion 48 Guide portion 51 Cover surface portion 54 Engagement piece 55 Engagement claw portion 56 Slide surface
