JP2004100912A

JP2004100912A - Socket for pipe joint

Info

Publication number: JP2004100912A
Application number: JP2002266828A
Authority: JP
Inventors: Toshio Mikitani; 御器谷　俊雄; Jin Yamashita; 山下　盡; Takeya Sasa; 佐々　武也
Original assignee: Nitto Kohki Co Ltd
Current assignee: Nitto Kohki Co Ltd
Priority date: 2002-09-12
Filing date: 2002-09-12
Publication date: 2004-04-02
Anticipated expiration: 2022-09-12
Also published as: JP3865673B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a socket for a pipe joint capable of preventing a locking member for connecting a hose end rotatably to a socket body, from slipping out of the socket body. <P>SOLUTION: In this socket 1 for the pipe joint, a flow hole 5 is formed inside the front side of the socket body 3, in the direction of an axis A, and a connecting hole 25 is formed in the rear part of the socket body 3, in the direction of an axis B intersecting the axis A. A base part 4a of the hose end 4 provided with an annular groove 27 on the outer periphery is fitted into the connecting hole 25, and a locking hole 28 passing through a part of the annular groove 27 of the hose end 4 to pierce in a tangential direction is formed in the rear part of the socket body 3. A locking member 29 is passed through the locking hole 28 and fitted to the annular groove 27, and the hose end 4 is locked in a rotatable manner by the locking member 29. An end cover 31 having a blocking part 31a for closing opening parts on both sides of the locking hole 28 to impede the slip-out of the locking member 29 is mounted to the rear part of the socket body 3 by a fall preventing means 32 so as not to fall off the socket body 3. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、主にガス配管の接続に用いられる管継手のソケットに関するものである。
【０００２】
【従来の技術】
ガス燃焼器具用ホースや元栓の継手として迅速管継手が使用されている。一般に元栓は壁面や床面に埋設されるようになっており、この元栓には管継手のプラグが設けられ、一方ガス燃焼器具にガスを供給するガスホースの端部には管継手のソケットが設けられ、使用時に、ソケットをプラグに接続することによりガス燃焼器具にガスが供給できるようになっている。
【０００３】
従来、この種の管継手として、ガスホースによる事故防止対策として、ホースエンドを略へ字状に屈曲し、該ホースエンドをソケットにその向きを可変し得るように回転自在に取り付けたものが知られている（例えば、特許文献１参照）。
【０００４】
前記ホースエンドを、その向きを可変し得るように回転自在に取り付けた管継手のソケットは、図１３に示すように、プラグを接続する施錠機構１０を備えたソケット本体３の前部側の内部にはその軸線Ａ方向に流通孔５が形成され、前記ソケット本体３の後部では前記軸線Ａに対して交差する軸線Ｂ方向に接続孔２５が形成され、そして、前記接続孔２５には内部に流通孔を有するホースエンド４の基部４ａが回転自在に嵌合されている。前記接続孔２５に回転自在に嵌合されているホースエンド４の基部４ａの外周には環状溝２７が設けられており、そして、前記ソケット本体３の後部には前記ホースエンド４の基部４ａの外周に設けられた環状溝２７の一部を通って接線方向に貫通する係止孔２８が形成されており、前記係止孔２８には係止部材２９が通されて前記環状溝２７に嵌められ、前記係止部材２９で前記ホースエンド４が回転自在な状態で抜け止めされている。
【０００５】
前記係止部材２９が通された係止孔２８の両側の開口部は開口したままの状態にあり、この係止孔２８に通されている係止部材２９は長手方向に割の入った弾性素材で形成された筒状体で形成されており、係止孔２８へ通された係止部材２９は、係止部材２９となる筒状体を縮径した状態で係止孔２８に挿入され、復元力により拡径する筒状体が係止孔２８の内壁に弾発的に圧接し、係止孔２８からの係止部材２９の抜け出しの防止が図られている。
【０００６】
【特許文献１】
特開２００１−２４１５８５公報（第４−６頁、図１）
【０００７】
【発明が解決しようとする課題】
上記従来の管継手のソケットでは、復元力により拡径する筒状体が係止孔２８の内壁に弾発的に圧接し、係止孔２８からの係止部材２９の抜け出しの防止が図られているが、ホースエンド４に力を加えながら回転させた場合、摩擦により係止部材２９に抜ける方向の力が働いてしまい、この力が弾発力による係止部材２９の保持力を超えると、係止部材２９が係止孔２８から抜けでてきてしまうおそれがあるといった問題点があった。
【０００８】
本発明の目的は、ソケット本体にホースエンドを回転自在な状態で接続している係止部材がソケット本体から抜けでてしまうのを防止できる管継手のソケットを提供することにある。
【０００９】
【課題を解決するための手段】
上記の目的を達成するために、請求項１に記載の発明は、適宜の施錠機構を備えプラグを着脱自在に接続できる管継手のソケットであって、ソケット本体の前部側の内部にはその軸線Ａ方向に流通孔が形成され、前記ソケット本体の後部では前記軸線Ａに対して交差する軸線Ｂ方向に接続孔が形成され、前記接続孔には内部に流通孔を有するホースエンドの基部が回転自在に嵌合され、前記ホースエンドの基部の外周には環状溝が設けられ、前記ソケット本体の後部には前記ホースエンドの基部の外周に設けられた環状溝の一部を通って接線方向に貫通する係止孔が形成され、前記係止孔には係止部材が通されて前記環状溝に嵌められ、前記係止部材で前記ホースエンドが回転自在な状態で抜け止めされている管継手のソケットにおいて、前記ソケット本体の後部に、前記係止孔の両側の開口部を塞ぎ係止部材の抜け出しを阻止する閉塞部を有するエンドカバーを脱落防止手段によりソケット本体から脱落しないように装着したことを特徴とする。
【００１０】
かかる構成から、係止部材が通されている係止孔の両側の開口部がソケット本体の後部に装着されたエンドカバーの閉塞部により塞がれているので、該閉塞部により係止孔からの係止部材の抜け出しが確実に阻止されることになる。
【００１１】
請求項２に記載の発明は、請求項１に記載の前記エンドカバーの脱落防止手段として、ソケット本体の外周面及びエンドカバーの内周面のいずれか一方に係止凸部を、他方に前記係止凸部と係止可能な係止凹部を形成し、エンドカバーの材質変形により前記係止凸部と係止凹部を係止するようにしたことを特徴とする。
【００１２】
かかる構成から、ソケット本体の後部に装着したエンドカバーは、エンドカバーの内周面に形成した係止凹部或いは係止凸部が、ソケット本体の外周面に形成した係止凸部或いは係止凹部に、エンドカバーの材質変形により係止するので、ソケット本体の後部からのエンドカバーの脱落が防止され、これにより、係止部材が通されている係止孔の両側の開口部をエンドカバーの閉塞部により塞いでいる状態が保持され、係止孔からの係止部材の抜け出しを確実に阻止することができる。
【００１３】
請求項３に記載の発明は、請求項１に記載の前記エンドカバーの脱落防止手段として、エンドカバーの閉塞部に前記係止孔の両側の開口部に嵌合可能な係止突起を設け、エンドカバーの弾性により前記係止突起を係止孔の両側の開口部に嵌合係止するようにしたことを特徴とする。
【００１４】
かかる構成から、ソケット本体の後部に装着したエンドカバーの閉塞部に設けた係止突起が、エンドカバーの弾性により前記係止部材が通されている係止孔の両側の開口部に嵌合係止するので、ソケット本体の後部からのエンドカバーの脱落が防止され、これにより、係止部材が通されている係止孔の両側の開口部をエンドカバーの閉塞部により塞いでいる状態が保持され、係止孔からの係止部材の抜け出しを確実に阻止することができる。
【００１５】
請求項４に記載の発明は、スリーブを操作してプラグを着脱自在に接続できる管継手のソケットであって、ソケット本体の前部側の内部にはその軸線Ａ方向に流通孔が形成され、前記ソケット本体の後部では前記軸線Ａに対して交差する軸線Ｂ方向に接続孔が形成され、前記接続孔には内部に流通孔を有するホースエンドの基部が回転自在に嵌合され、前記ホースエンドの基部の外周には環状溝が設けられ、前記ソケット本体の後部には前記ホースエンドの基部の外周に設けられた環状溝の一部を通って接線方向に貫通する係止孔が形成され、前記係止孔には係止部材が通されて前記環状溝に嵌められ、前記係止部材で前記ホースエンドが回転自在な状態で抜け止めされている管継手のソケットにおいて、前記ソケット本体の外周に嵌合されるスリーブカバーの後端部に、該後端部を延長してソケット本体の後部を覆うエンドカバー部を設け、前記エンドカバー部には前記スリーブカバーがソケット本体のスリーブに嵌合する途中で前記係止孔に合致する係止部材挿入孔を設けるとともに、スリーブカバーがソケット本体のスリーブに完全に嵌合しエンドカバー部がソケット本体の後部を完全に覆った状態で前記係止孔の両側の開口部を塞ぎ係止部材の抜け出しを阻止する閉塞部を設けたことを特徴とする。
【００１６】
かかる構成から、スリーブカバーをソケット本体のスリーブに嵌合する途中で係止部材挿入孔が係止孔に合致した状態で、ソケット本体の後部に形成されている接続孔にホースエンドの基部を嵌合し、係止部材挿入孔から係止部材を差し込んでホースエンドの基部の外周に設けられた環状溝の一部を通るように係止孔に挿入することにより、ソケット本体の後部に形成されている接続孔にホースエンドの基部を回転自在に接続することができ、この後、スリーブカバーをソケット本体のスリーブに完全に嵌合しエンドカバー部がソケット本体の後部を完全に覆った状態のとき、係止部材が通されている係止孔の両側の開口部が閉塞部により塞がれるので、該閉鎖部により係止孔からの係止部材の抜け出しが確実に阻止されることになる。
【００１７】
請求項５に記載の発明は、適宜の施錠機構を備えプラグを着脱自在に接続できる管継手のソケットであって、ソケット本体の前部側の内部にはその軸線Ａ方向に流通孔が形成され、前記ソケット本体の後部では前記軸線Ａに対して交差する軸線Ｂ方向に接続孔が形成され、前記接続孔には内部に流通孔を有するホースエンドの基部が回転自在に嵌合され、前記ホースエンドの基部の外周には環状溝が設けられ、前記ソケット本体の後部には前記ホースエンドの基部の外周に設けられた環状溝の一部を通って接線方向に貫通する係止孔が形成され、前記係止孔には係止部材が通されて前記環状溝に嵌められ、前記係止部材で前記ホースエンドが回転自在な状態で抜け止めされている管継手のソケットにおいて、前記係止部材の両端に、前記係止孔より大きな抜け止め用頭部を設けたことを特徴とする。
【００１８】
かかる構成から係止部材の両端に係止孔より大きな抜け止め用頭部を設けたので、係止部材が係止孔から脱出するのを防止することができ、係止孔からの係止部材の抜け出しが確実に阻止されることになる。
【００１９】
【発明の実施の形態】
図１乃至図３は本発明に係る管継手のソケットの実施の形態の第１例を示したもので、図１は本例の管継手のソケットと、ソケットに接続されるプラグを示す一部縦断面図、図２はソケット本体の後部に装着されるエンドカバーを示す拡大縦断面図、図３は図２に示すエンドカバーの底面図である。
【００２０】
図において、１は管継手のソケット、２はソケット１に着脱自在に接続されるプラグである。ソケット１は、ソケット本体３と、ソケット本体３の後部に接続されたホースエンド４により構成されている。前記ソケット本体３は、前部側の内部にソケット本体３の軸線Ａ方向に流通孔５が形成されている。前記ソケット本体３の内部には、内筒体６が先端側に向けて突設されている。この内筒体６の先端には、ソケット１とプラグ２の接続時に、プラグ２に内蔵されている弁体に当接し、これを押圧して後退させる弁押体８が突設されている。この弁押体８には流通孔５に連通する連通孔９が形成されている。また、内筒体６の後端は、ソケット本体３と一体となって内筒体６とソケット本体３との間が袋状となっている。
【００２１】
１０はソケット１とプラグ２とを着脱自在に接続する施錠機構であり、本例では次のような構成となっている。ソケット１を構成するソケット本体３の先端部に、周方向に複数の貫通孔１１が形成され、これら貫通孔１１には直径がソケット本体３の筒壁の厚さより大きいロックボール１２が求遠心方向に出没自在に嵌合している。
【００２２】
そして、ソケット本体３の外周には前進してロックボール１２を求心方向に押圧移動させ、後退してその押圧を解除し遠心方向への移動を可能にするスリーブ１３が軸方向に摺動自在に嵌合しており、このスリーブ１３はスプリング１４により前進方向に付勢されている。スプリング１４は、ソケット本体３とスリーブ１３の外周に沿って嵌合されたスリーブカバー１５で支持されている。１６はスリーブ１３の内面に形成されたロックボール押圧面、１７は同じくスリーブ１３の内面に形成されたロックボール押圧解除凹部である。
【００２３】
また、ソケット本体３と内筒体６との間には可動筒体１８が軸方向に摺動自在に嵌合しており、前進位置にてその外周面でロックボール１２を支え、その求心方向への移動即ちソケット本体３内への没入を阻止し、後退してロックボール１２から外れ、ロックボール１２の求心方向への移動を可能とするようになっており、この可動筒体１８はスプリング１９により前進方向に付勢されている。
【００２４】
そして、スリーブ１３と可動筒体１８との関係にあっては、可動筒体１８が前進位置にあるとき、ロックボール１２は可動筒体１８に求心側から支えられて遠心方向に移動し、ソケット本体３の外方へ突出したロックボール１２は後退位置にあるスリーブ１３のロックボール押圧解除凹部１７に入り、ロックボール押圧面１６とロックボール押圧解除凹部１７との間に形成される段部２０がロックボール１２に係合してスリーブ１３はその前進が阻止され後退位置に保持される状態となり、そして、可動筒体１８が後退して前記ロックボール１２から外れると、ロックボール１２はスリーブ１３に押されて求心方向に移動し、これによりスリーブ１３が前進してその内周面に形成したロックボール押圧面１６によりロックボール１２を求心方向に押さえ、ロックボール１２の遠心方向への移動を阻止するようになっている。
【００２５】
可動筒体１８は、その先端がソケット１とプラグ２との接続時にソケット１に挿入されたプラグ２の先端に当接し、プラグ２に押されて後退するようになっている。この可動筒体１８の先端は、プラグ２の先端に当接し可動筒体１８とプラグ２との間をシールするパッキン２１が設けられている。また、可動筒体１８の内周面には、該可動筒体１８の内周面と内筒体６の外周面との間をシールするシールリング２２が装着されている。また、可動筒体１８は、その後端外周に突設したストッパー部２３がソケット本体３の内周に突設したストッパー部２４に当接することにより前進方向への抜け止めが図られている。
【００２６】
前記ソケット本体３の後部には、ソケット本体３の前部側の内部に形成されている流通孔５と連通する接続孔２５が、ソケット本体３の軸線Ａに対して交差する軸線Ｂ方向に形成されている。この接続孔２５内には、略へ字状に屈曲された基部４ａを有するホースエンド４の該基部４ａが回転自在に嵌合されている。このホースエンド４の基部４ａの外周には、環状溝２７が設けられている。前記ソケット本体３の後部には、前記接続孔２５内に嵌合されたホースエンド４の該基部４ａ外周に形成された環状溝２７の一部を通って接線方向に貫通する係止孔２８が形成されている。
【００２７】
この係止孔２８には、係止部材２９が通されて環状溝２７に嵌められ、該係止部材２９で前記ホースエンド４が回転自在な状態で抜け止めされている。この係止孔２８に通されている係止部材２９にあっては、本例では、弾性素材で形成され、長手方向に割の入った断面Ｃ状の筒状体となっており、係止孔２８へ通された係止部材２９は、係止部材２９となる筒状体を縮径した状態で係止孔２８に挿入され、復元力により拡径する筒状体が係止孔２８の内壁に弾発的に圧接した状態で係止孔２８に通されている。前記ホースエンド４の基部４ａの外周には、該基部４ａと接続孔２５との間をシールするシールリング３０が装着されている。
【００２８】
本例の管継手のソケット１は、前記ソケット本体３の後部に、前記係止孔２８の両側の開口部を塞ぎ係止部材２９の抜け出しを阻止する閉塞部３１ａを有するエンドカバー３１を脱落防止手段３２によりソケット本体３から脱落しないように装着している。
【００２９】
前記エンドカバー３１は、ソケット本体３の後部に密に嵌合可能な内径を有し前端を開口し後端を閉じた筒状体をベースとし、この筒状体の後端閉鎖部３３から底部に渡たり前端開口部３４に達するまで、前記ソケット本体３の後部に形成されている接続孔２５に接続しているホースエンド４を通し、且つエンドカバー３１がホースエンド４の回転の妨げにならないように底側開口部３５を形成した形状となっている。
【００３０】
このエンドカバー３１は、ソケット本体３の後部に、ソケット本体３の後端側から嵌合するようにして装着される。そして、エンドカバー３１の両側壁が閉塞部３１ａとなり、エンドカバー３１をソケット本体３の後部に嵌合して装着したとき、前記閉塞部３１ａがソケット本体３の後部の両側に開口する前記係止孔２８の両側の開口部を塞ぎ係止部材２９の抜け出しを阻止するようになっている。
【００３１】
また、前記ソケット本体３の後部に装着したエンドカバー３１の脱落を防止する脱落防止手段３２として、本例では、エンドカバー３１の前端開口部３４側の内周面に係止凸部３６を形成し、そして、ソケット本体３の外周面に、前記係止凸部３６と係止可能な係止凹部３７を形成し、エンドカバー３１をソケット本体３の後部に嵌合して装着したとき、エンドカバー３１の材質変形により前記係止凸部３６が係止凹部３７に係止するように構成されている。さらに、本例では、エンドカバー３１の脱落をより確実に防止するために、ソケット本体３の後部に装着したエンドカバー３１の前端部が前記ソケット本体３とスリーブ１３の外周に沿って嵌合されたスリーブカバー１５の後端とソケット本体３との間に差し込まれ、スリーブカバー１５で押さえられている。
【００３２】
なお本例では、前記係止部材２９は長手方向に割の入った断面Ｃ状の筒状体で形成されているが、これに換えて棒状部材で形成されたものであってもよい。
【００３３】
上記のように構成された本例では、係止部材２９が通されている係止孔２８の両側の開口部がソケット本体３の後部に装着されたエンドカバー３１の閉塞部３１ａにより塞がれているので、閉塞部３１ａにより係止孔２８からの係止部材２９の抜け出しが確実に阻止されることになる。
【００３４】
そして、前記ソケット本体３の後部に装着したエンドカバー３１は、エンドカバー３１の内周面に形成した係止凸部３６がソケット本体３の外周面に形成した係止凹部３７にエンドカバー３１の材質変形により係止するといった脱落防止手段３２により、ソケット本体３の後部からのエンドカバー３１の脱落が防止され、これにより、係止部材２９が通されている係止孔２８の両側の開口部をエンドカバー３１の閉塞部３１ａにより塞いでいる状態が保持され、係止孔２８からの係止部材２９の抜け出しを確実に阻止することができる。
【００３５】
なお、本例では脱落防止手段３２として、エンドカバー３１の前端開口部３４側の内周面に係止凸部３６を形成し、そして、ソケット本体３の外周面に、前記係止凸部３６と係止可能な係止凹部３７を形成しているが、エンドカバー３１の前端開口部３４側の内周面に係止凹部３７を形成し、そして、ソケット本体３の外周面に、前記係止凹部３７と係止可能な係止凸部３６を形成してもよい。
【００３６】
また、脱落防止手段３２として、図示しないが、エンドカバー３１の前端開口部３４側の外周面に係止凸部又は係止凹部を形成し、そして、ソケット本体３の外周に嵌合しているスリーブカバー１５の後端の内周面に前記係止凸部又は係止凹部に係止可能な係止凹部又は係止凸部を形成し、エンドカバー３１の前端部をスリーブカバー１５の後端部内に挿入し、エンドカバー３１の前端開口部３４側の外周面に形成した係止凸部又は係止凹部をスリーブカバー１５の後端の内周面に形成した係止凹部又は係止凸部に係止するようにしたものであってもよい。
【００３７】
図４、図５は本発明に係る管継手のソケットの実施の形態の第２例を示したもので、図４は本例の管継手のソケットのソケット本体の後部に装着されるエンドカバーを示す拡大縦断面図、図５は図４のＡ−Ａ線断面図である。
【００３８】
本例の管継手のソケットは、前記第１例と違うところはエンドカバー３１の脱落防止手段３２だけで、他は第１例と同様の構成になっているので、第１例と同様の構成の部分は、第１例を援用しその説明を省略する。
【００３９】
本例の管継手のソケットにおけるエンドカバー３１は、前記第１例と同様に、ソケット本体３の後部に密に嵌合可能な内径を有し前端を開口し後端を閉じた筒状体をベースとし、この筒状体の後端閉鎖部３３から底部に渡たり前端開口部３４に達するまで、前記ソケット本体３の後部に形成されている接続孔２５に接続しているホースエンド４を通し、且つエンドカバー３１がホースエンド４の回転の妨げにならないように底側開口部３５を形成した形状となっている。そして、本例のエンドカバー３１にあっては、ソケット本体３からの脱落を防止する脱落防止手段３２は、エンドカバー３１を合成樹脂等の弾性素材で形成し、エンドカバー３１の両側壁で構成される閉塞部３１ａに、ソケット本体３の後部に形成されその両側に開口する係止孔２８の開口部に嵌合可能な係止突起３８を設け、エンドカバー３１の両側壁の弾性により前記係止突起３８を係止孔２８の両側の開口部に嵌合係止するようになっている。
【００４０】
上記のように構成された本例では、ソケット本体３の後部に装着したエンドカバー３１の閉塞部３１ａに設けた係止突起３８が、エンドカバー３１の両側壁の弾性により係止部材２９が通されている係止孔２８の両側の開口部に嵌合係止するので、ソケット本体３の後部からのエンドカバー３１の脱落が防止され、これにより、係止部材２９が通されている係止孔２８の両側の開口部をエンドカバー３１の閉塞部３１ａにより塞いでいる状態が保持され、係止孔２８からの係止部材２９の抜け出しを確実に阻止することができる。
【００４１】
図６乃至図８は本発明に係る管継手のソケットの実施の形態の第３例を示したもので、図６は本例の管継手のソケットを示す一部縦断面図、図７は後端にソケット本体の後部を覆うエンドカバー部を設けたスリーブカバーを示す一部縦断面図、図８は図７に示すスリーブカバーの底面図である。
【００４２】
本例の管継手のソケットは、後端にソケット本体３の後部を覆うエンドカバー部３９を設けたスリーブカバー１５以外の構成は、第１例と同様の構成になっているので、対応する部分には同一符号を付けて示し、その説明を省略する。
【００４３】
本例では、前記ソケット本体３の外周に嵌合されるスリーブカバー１５の後端部に、該後端部を延長してソケット本体３の後部を覆うエンドカバー部３９が一体に設けられている。後端にエンドカバー部３９が一体に設けられている前記スリーブカバー１５にあっては、前記エンドカバー部３９の形状が、前記第１例のエンドカバー３１と同様に、ソケット本体３の後部に密に嵌合可能な内径を有し前端を開口し後端を閉じた筒状体をベースとし、この筒状体の前端開口部がスリーブカバー１５の後端部に一体に接続された形状を呈し、更に、エンドカバー部３９の後端閉鎖部４０から底部に渡たりスリーブカバー１５に達するまで、前記ソケット本体３の後部に形成されている接続孔２５に接続しているホースエンド４を通し、且つエンドカバー部３９がホースエンド４の回転の妨げにならないように底側開口部４１が形成された形状となっている。
【００４４】
前記エンドカバー部３９には、その両側壁に前記スリーブカバー１５がソケット本体３のスリーブ１３に嵌合する途中で、ソケット本体３の後部に形成された前記係止孔２８に合致する係止部材挿入孔４２が設けられているとともに、スリーブカバー１５がソケット本体３のスリーブ１３に完全に嵌合しエンドカバー部３９がソケット本体３の後部を完全に覆った状態で前記係止孔２８の両側の開口部を塞ぎ係止部材２９の抜け出しを阻止する閉塞部４３が設けられている。
【００４５】
このような形状となっている後端にエンドカバー部３９を設けた前記スリーブカバー１５は、次のようにしてソケット本体３に嵌合する。
【００４６】
先ず、スリーブカバー１５をソケット本体３の後端側から嵌合し、スリーブカバー１５がスリーブ１３に嵌合する途中で係止部材挿入孔４２が係止孔２８に合致した状態となったとき（図９Ａ）、ホースエンド４の基部４ａを、前記エンドカバー部３９の後端閉鎖部４０から底部に渡たりスリーブカバー１５に達するまで形成されている底側開口部４１から差し込み、前記ホースエンド４の基部４ａを、ソケット本体３の後部に形成されている接続孔２５に嵌合し、係止部材挿入孔４２から係止部材２９を差し込んでホースエンド４の基部４ａの外周に設けられた環状溝２７の一部を通るように係止孔２８に挿入する（図９Ｂ）。これにより、ソケット本体３の後部に形成されている接続孔２８にホースエンド４の基部４ａを回転自在に接続することができる。
【００４７】
この後、スリーブカバー１５をソケット本体３のスリーブ１３に完全に嵌合しエンドカバー部３９がソケット本体３の後部を完全に覆った状態のとき、係止部材２９が通されている係止孔２８の両側の開口部が閉塞部４３により塞がれる（図９Ｃ）。これにより、該閉塞部４３により係止孔２８からの係止部材２９の抜け出しが確実に阻止されることになる。
【００４８】
図１０乃至図１２は本発明に係る管継手のソケットの実施の形態の第４例を示したもので、図１０は本例の管継手のソケットの正面図、図１１は左側面図、図１２は本例で用いている係止部材の分解状態の一部破断側面図である。
【００４９】
本例の管継手のソケットは、前記第１例と違うところはエンドカバー３１が無く、第１例の係止部材２９の構成と異なる係止部材４４を備えているだけで、他は第１例と同様の構成になっているので、第１例と対応する部分には同一符号を付けて示し、その説明を省略する。
【００５０】
本例では、ソケット本体３の後部に形成されている接続孔２５に嵌合されているホースエンド４の基部４ａの外周に設けられた環状溝２７の一部を通るように係止孔２８に挿入される係止部材４４は、その両端に、前記係止孔２８より大きな抜け止め用頭部４５が設けられている。本例の、両端に前記係止孔２８より大きな抜け止め用頭部４５が設けられた係止部材４４にあっては、その構成に特に限定されるものではい。
【００５１】
例えば、図１２（Ａ）に示すように、棒状部材４６の一方の端部に前記係止孔２８より大きな抜け止め用頭部４５を設けておき、該棒状部材４６を係止孔２８に挿入して、その他端部を係止孔２８外へ突出させ、この突出した部分を圧潰して係止孔２８より大きな抜け止め用頭部４５を設けるようにしてもよい。
【００５２】
また、図１２（Ｂ）に示すように、長手方向の途中で２分割された部材４６Ａと部材４６Ｂの外側端部に抜け止め用頭部４５を形成し、部材４６Ａの内側端部には、軸方向に小孔４７を形成し、部材４６Ｂの内側端部には前記小孔４７に圧入されるピン４８が突設したものからなり、係止孔２８に棒状部材４６の部材４６Ａと部材４６Ｂを反対側から挿入して、部材４６Ａの内側端部に形成した小孔４７に部材４６Ｂの内側端部に形成したピン４８を圧入して連結するようにしたものであってもよい。
【００５３】
また、図１２（Ｃ）に示すように、棒状部材４６の一方の端部に前記係止孔２８より大きな抜け止め用頭部４５を設け、他端にピン４９を突設したものと、ピン４９を圧入可能な小孔５０を有する前記係止孔２８より大きな抜け止め用頭部４５とからなり、前記棒状部材４６を係止孔２８に挿入して、その他端に突設したピン４９を係止孔２８外へ突出させ、このピン４９を抜け止め用頭部４５の小孔５０に圧入して連結するようにしたものであってもよい。
【００５４】
また、図１２（Ｄ）に示すように、棒状部材４６の一方の端部に前記係止孔２８より大きな抜け止め用頭部４５を設け、他端に筒状部５１を形成したものと、筒状部５１を嵌合可能な穴５２を有し前記係止孔２８より大きな外径を有するリング状の抜け止め用頭部４５とからなり、前記棒状部材４６を係止孔２８に挿入して、その他端に形成した筒状部５１を係止孔２８外へ突出させ、この筒状部５１を前記リング状の抜け止め用頭部４５の穴５２に嵌合して、前記筒状部５１を外周方向へ押し広げて連結するようにしたものであってもよい。
【００５５】
このように、係止部材４４の両端に係止孔２８より大きな抜け止め用頭部４５を設けたので、係止部材４４が係止孔２８から脱出するのを防止することができ、係止孔２８からの係止部材４４の抜け出しが確実に阻止されることになる。
【００５６】
また、他例として、図示しないが、前記係止孔２８に、前記第１例〜第３例に示される長手方向に割の入った断面Ｃ状の筒状体からなる係止部材２９を挿入し、この係止部材２９内に図１２（Ａ），（Ｂ），（Ｃ），（Ｄ）に示すような係止部材４４を挿入することもでき、このようにすることにより、係止部材４４及び係止部材２９が係止孔２８から脱出するのを防止することができ、係止孔２８からの係止部材４４及び係止部材２９の抜け出しが確実に阻止されることになる。
【００５７】
【発明の効果】
以上のように本発明に係る管継手のソケットによれば、簡単な構成で、ソケット本体の後部に形成されている係止孔に、ソケット本体の後部に形成されている接続孔に嵌合されたホースエンドの基部の外周に設けられた環状溝の一部を通るように挿入され、接続孔にホースエンドの基部を回転自在に接続する係止部材が係止孔から抜け出すことを確実に防止することができる。
【図面の簡単な説明】
【図１】本発明に係る管継手のソケットの実施の形態の第１例を示したもので、本例の管継手のソケットと、ソケットに接続されるプラグを示す一部縦断面図。
【図２】第１例のソケット本体の後部に装着されるエンドカバーを示す拡大縦断面図。
【図３】図２に示すエンドカバーの底面図。
【図４】本発明に係る管継手のソケットの実施の形態の第２例を示したもので、本例の管継手のソケットのソケット本体の後部に装着されるエンドカバーを示す拡大縦断面図。
【図５】図４のＡ−Ａ線断面図。
【図６】本発明に係る管継手のソケットの実施の形態の第３例を示したもので、本例の管継手のソケットを示す一部縦断面図。
【図７】後端にソケット本体の後部を覆うエンドカバー部を設けたスリーブカバーを示す一部縦断面図。
【図８】図７に示すスリーブカバーの底面図。
【図９】（Ａ）、（Ｂ）、（Ｃ）は、第３例のソケット本体にスリーブカバーを嵌合する工程を示す説明図。
【図１０】本発明に係る管継手のソケットの実施の形態の第４例を示したもので、本例の管継手のソケットの正面図。
【図１１】図１０の左側面図。
【図１２】（Ａ）、（Ｂ）、（Ｃ）、（Ｄ）はそれぞれ第４例で用いている係止部材の説明図。
【図１３】従来の管継手のソケットを示す一部縦断面図。
【符号の説明】
１　ソケット
２　プラグ
３　ソケット本体
４　ホースエンド
４ａ　ホースエンドの基部
５　流通孔
１０　施錠機構
１３　スリーブ
２５　接続孔
２７　環状溝
２８　係止孔
２９　係止部材
３０　シールリング
３１　エンドカバー
３１ａ　閉塞部
３２　脱落防止手段
３３　後端閉鎖部
３４　前端開口部
３５　底側開口部
３６　係止凸部
３７　係止凹部
３８　係止突起
３９　エンドカバー部
４０　後端閉鎖部
４１　底側開口部
４２　係止部材挿入孔
４３　閉塞部
４４　係止部材
４５　抜け止め用頭部
４６　棒状部材
４６Ａ，４６Ｂ　部材
４７　小孔
４８　ピン
４９　ピン
５０　小孔
５１　筒状部
５２　穴[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a socket of a pipe joint mainly used for connecting a gas pipe.
[0002]
[Prior art]
Quick fittings are used as hoses for gas combustion appliances and fittings for main plugs. In general, the main cock is buried in the wall or floor surface, and the main cock is provided with a fitting plug, while the gas hose that supplies gas to the gas combustion equipment has a fitting socket at the end. In use, the gas can be supplied to the gas-burning apparatus by connecting the socket to the plug during use.
[0003]
Conventionally, as a pipe joint of this type, as a measure for preventing accidents caused by a gas hose, there has been known a hose end in which a hose end is bent in a substantially rectangular shape and the hose end is rotatably attached to a socket so that its direction can be changed. (For example, see Patent Document 1).
[0004]
As shown in FIG. 13, the hose end of the pipe joint in which the hose end is rotatably mounted so as to be able to change its direction is provided on the front side of the socket body 3 having a locking mechanism 10 for connecting a plug. A communication hole 5 is formed in the direction of the axis A, and a connection hole 25 is formed in the rear part of the socket body 3 in the direction of the axis B intersecting with the axis A. A base 4a of a hose end 4 having a flow hole is rotatably fitted. An annular groove 27 is provided on the outer periphery of the base 4 a of the hose end 4 rotatably fitted in the connection hole 25, and the base of the base 4 a of the hose end 4 is provided at the rear of the socket body 3. A locking hole 28 is formed through a part of the annular groove 27 provided on the outer periphery and penetrating in a tangential direction. A locking member 29 is passed through the locking hole 28 and fitted into the annular groove 27. The hose end 4 is prevented from coming off by the locking member 29 in a rotatable state.
[0005]
The openings on both sides of the locking hole 28 through which the locking member 29 is passed are left open, and the locking member 29 passed through the locking hole 28 is elastic in the longitudinal direction. The locking member 29, which is formed of a cylindrical body formed of a material and passed through the locking hole 28, is inserted into the locking hole 28 with the diameter of the cylindrical body serving as the locking member 29 reduced. The cylindrical body whose diameter is expanded by the restoring force is elastically pressed against the inner wall of the locking hole 28 to prevent the locking member 29 from coming out of the locking hole 28.
[0006]
[Patent Document 1]
JP 2001-241585 A (Page 4-6, FIG. 1)
[0007]
[Problems to be solved by the invention]
In the above-mentioned conventional socket for a pipe joint, the tubular body whose diameter is expanded by the restoring force is elastically pressed against the inner wall of the locking hole 28 to prevent the locking member 29 from coming out of the locking hole 28. However, when the hose end 4 is rotated while applying a force, a force in a direction of pulling out of the locking member 29 is exerted due to friction, and if this force exceeds the holding force of the locking member 29 due to the elastic force. However, there is a problem that the locking member 29 may come off from the locking hole 28.
[0008]
An object of the present invention is to provide a socket of a pipe joint which can prevent a locking member connecting a hose end to a socket main body in a rotatable state from coming off from the socket main body.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, an invention according to claim 1 is a socket of a pipe joint having an appropriate locking mechanism and capable of detachably connecting a plug, wherein the socket is provided inside a front portion of the socket body. A flow hole is formed in the direction of the axis A, and a connection hole is formed in the direction of the axis B crossing the axis A at the rear portion of the socket body, and the connection hole has a base of a hose end having a flow hole therein. The hose end is rotatably fitted with an annular groove on the outer periphery of the base of the hose end, and the rear part of the socket body is tangentially inserted through a part of the annular groove provided on the outer periphery of the base of the hose end. A pipe through which a locking member is inserted, a locking member is passed through the locking hole and fitted in the annular groove, and the hose end is prevented from coming off in a rotatable state by the locking member. In the socket of the fitting, front An end cover having a blocking portion that closes the opening on both sides of the locking hole and prevents the locking member from coming out is attached to the rear portion of the socket body so as to prevent the locking member from falling off from the socket body by the drop-off prevention means. .
[0010]
With this configuration, the openings on both sides of the locking hole through which the locking member is passed are closed by the closing portion of the end cover attached to the rear portion of the socket body. Of the locking member is surely prevented.
[0011]
According to a second aspect of the present invention, as the means for preventing the end cover from falling off according to the first aspect, a locking projection is provided on one of an outer peripheral surface of a socket body and an inner peripheral surface of the end cover, and the other is provided on the other. A locking recess that can be locked to the locking projection is formed, and the locking projection and the locking recess are locked by material deformation of the end cover.
[0012]
With such a configuration, the end cover attached to the rear portion of the socket body has a locking concave portion or a locking convex portion formed on the inner peripheral surface of the end cover and a locking convex portion or a locking concave portion formed on the outer peripheral surface of the socket body. Since the end cover is locked by the deformation of the material of the end cover, the end cover is prevented from falling off from the rear portion of the socket body, thereby opening the opening on both sides of the locking hole through which the locking member is passed. The closed state is maintained by the closing portion, and the locking member can be reliably prevented from coming out of the locking hole.
[0013]
According to a third aspect of the present invention, as the means for preventing the end cover from falling off according to the first aspect, a closing projection of the end cover is provided with a locking projection that can be fitted to openings on both sides of the locking hole, The locking projection is fitted and locked to the openings on both sides of the locking hole by the elasticity of the end cover.
[0014]
With this configuration, the locking projection provided on the closing portion of the end cover attached to the rear part of the socket body is engaged with the opening on both sides of the locking hole through which the locking member is passed due to the elasticity of the end cover. The end cover is prevented from falling off from the rear part of the socket main body, and the opening on both sides of the locking hole through which the locking member is passed is closed by the closing part of the end cover. Thus, it is possible to reliably prevent the locking member from coming out of the locking hole.
[0015]
The invention according to claim 4 is a pipe joint socket to which a plug can be detachably connected by operating a sleeve, and a through hole is formed in the front side of the socket body in the direction of the axis A thereof. A connection hole is formed at a rear portion of the socket body in a direction of an axis B crossing the axis A, and a base of a hose end having a flow hole therein is rotatably fitted in the connection hole, An annular groove is provided on the outer periphery of the base of the socket body, and a locking hole which penetrates in a tangential direction through a part of the annular groove provided on the outer periphery of the base of the hose end is formed at a rear portion of the socket body, In a socket of a pipe joint, a locking member is passed through the locking hole and fitted into the annular groove, and the hose end is prevented from coming off in a rotatable state by the locking member. Mated to An end cover portion is provided at the rear end of the sleeve cover to extend the rear end and cover the rear portion of the socket body, and the end cover is provided with the engagement cover while the sleeve cover is fitted to the sleeve of the socket body. An opening on both sides of the locking hole is provided with a locking member insertion hole corresponding to the locking hole, and with the sleeve cover completely fitted into the sleeve of the socket body and the end cover portion completely covering the rear portion of the socket body. A closing portion for closing the portion and preventing the locking member from coming out is provided.
[0016]
With such a configuration, the base of the hose end is fitted into the connection hole formed in the rear portion of the socket body in a state where the locking member insertion hole matches the locking hole while the sleeve cover is being fitted into the sleeve of the socket body. By inserting the locking member from the locking member insertion hole and inserting it into the locking hole so as to pass through a part of an annular groove provided on the outer periphery of the base of the hose end, the locking member is formed at the rear part of the socket body. The base of the hose end can be rotatably connected to the connection hole, and after that, the sleeve cover is completely fitted into the sleeve of the socket body, and the end cover part completely covers the rear part of the socket body. At this time, since the openings on both sides of the locking hole through which the locking member is passed are closed by the closing portion, the locking member reliably prevents the locking member from coming out of the locking hole. .
[0017]
The invention according to claim 5 is a socket of a pipe joint having an appropriate locking mechanism and capable of detachably connecting a plug, wherein a flow hole is formed in the front side of the socket body in the direction of the axis A thereof. A connection hole is formed at a rear portion of the socket body in a direction of an axis B crossing the axis A, and a base of a hose end having a flow hole therein is rotatably fitted in the connection hole, An annular groove is provided on the outer periphery of the base of the end, and a locking hole is formed at a rear portion of the socket body so as to tangentially pass through a part of the annular groove provided on the outer periphery of the base of the hose end. A locking member passing through the locking hole, being fitted into the annular groove, and the hose end being prevented from coming off in a rotatable state by the locking member; At both ends of the lock Characterized in that it provided a larger retaining for the head.
[0018]
With such a configuration, since the retaining heads larger than the locking hole are provided at both ends of the locking member, the locking member can be prevented from coming out of the locking hole, and the locking member from the locking hole can be prevented. Is reliably prevented from coming out.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
FIGS. 1 to 3 show a first embodiment of a socket for a pipe joint according to the present invention. FIG. 1 shows a socket of the pipe joint of this embodiment and a part showing a plug connected to the socket. FIG. 2 is an enlarged longitudinal sectional view showing an end cover attached to a rear portion of the socket body, and FIG. 3 is a bottom view of the end cover shown in FIG.
[0020]
In the figure, reference numeral 1 denotes a socket of a pipe joint, and 2 denotes a plug detachably connected to the socket 1. The socket 1 includes a socket body 3 and a hose end 4 connected to a rear part of the socket body 3. The socket body 3 has a flow hole 5 formed in the front side inside the socket body 3 in the direction of the axis A. Inside the socket body 3, an inner cylindrical body 6 is provided so as to protrude toward the distal end side. At the tip of the inner cylindrical body 6, a valve pressing body 8 which comes into contact with a valve body incorporated in the plug 2 when pressing the socket 1 and the plug 2 and presses the valve body to retreat is protruded. A communication hole 9 communicating with the communication hole 5 is formed in the valve pressing body 8. The rear end of the inner cylinder 6 is integrated with the socket body 3 to form a bag between the inner cylinder 6 and the socket body 3.
[0021]
Reference numeral 10 denotes a locking mechanism for detachably connecting the socket 1 and the plug 2 and has the following configuration in this example. A plurality of through holes 11 are formed in the distal end portion of the socket body 3 constituting the socket 1 in the circumferential direction, and a lock ball 12 whose diameter is larger than the thickness of the cylindrical wall of the socket body 3 is formed in these through holes 11 in the centrifugal direction. Are fitted so that they can come and go.
[0022]
A sleeve 13 that moves forward on the outer periphery of the socket body 3 to press and move the lock ball 12 in the centripetal direction, retreats to release the press, and enables movement in the centrifugal direction is slidable in the axial direction. The sleeve 13 is urged by a spring 14 in the forward direction. The spring 14 is supported by a sleeve cover 15 fitted along the outer circumference of the socket body 3 and the sleeve 13. Reference numeral 16 denotes a lock ball pressing surface formed on the inner surface of the sleeve 13, and reference numeral 17 denotes a lock ball pressing release concave portion also formed on the inner surface of the sleeve 13.
[0023]
A movable cylinder 18 is slidably fitted in the axial direction between the socket body 3 and the inner cylinder 6, and supports the lock ball 12 on its outer peripheral surface at the forward position, and its centripetal direction. , I.e., immersion into the socket main body 3, and retreats from the lock ball 12 to enable the lock ball 12 to move in the centripetal direction. 19 is urged in the forward direction.
[0024]
In the relationship between the sleeve 13 and the movable cylinder 18, when the movable cylinder 18 is at the forward position, the lock ball 12 is supported by the movable cylinder 18 from the centripetal side and moves in the centrifugal direction. The lock ball 12 protruding outward from the main body 3 enters the lock ball pressing release recess 17 of the sleeve 13 at the retracted position, and the step portion 20 formed between the lock ball pressing surface 16 and the lock ball pressing release recess 17. Is engaged with the lock ball 12, the sleeve 13 is prevented from advancing, and is kept in the retracted position. When the movable cylinder 18 is retracted and comes off the lock ball 12, the lock ball 12 is And the sleeve 13 moves forward in the centripetal direction, whereby the sleeve 13 moves forward and the lock ball 12 is centriped by the lock ball pressing surface 16 formed on its inner peripheral surface. The retainer is adapted to prevent movement of the centrifugal direction of the locking ball 12.
[0025]
The movable cylindrical body 18 is configured such that the distal end thereof comes into contact with the distal end of the plug 2 inserted into the socket 1 when the socket 1 is connected to the plug 2, and is pushed back by the plug 2. The tip of the movable cylinder 18 is provided with a packing 21 that abuts against the tip of the plug 2 to seal between the movable cylinder 18 and the plug 2. A seal ring 22 for sealing between the inner peripheral surface of the movable cylindrical body 18 and the outer peripheral surface of the inner cylindrical body 6 is mounted on the inner peripheral surface of the movable cylindrical body 18. Further, the movable cylindrical body 18 is prevented from coming off in the forward direction by the stopper portion 23 projecting from the rear end outer periphery abutting against the stopper portion 24 projecting from the inner periphery of the socket body 3.
[0026]
At the rear of the socket body 3, a connection hole 25 communicating with the communication hole 5 formed inside the front side of the socket body 3 is formed in the direction of the axis B intersecting with the axis A of the socket body 3. Have been. In the connection hole 25, the base 4a of the hose end 4 having a base 4a bent in a substantially rectangular shape is rotatably fitted. An annular groove 27 is provided on the outer periphery of the base 4 a of the hose end 4. At the rear part of the socket body 3, a locking hole 28 penetrating tangentially through a part of an annular groove 27 formed on the outer periphery of the base 4a of the hose end 4 fitted into the connection hole 25. Is formed.
[0027]
A locking member 29 is passed through the locking hole 28 and fitted in the annular groove 27, and the hose end 4 is prevented from coming off by the locking member 29 in a rotatable state. In this embodiment, the locking member 29 passed through the locking hole 28 is formed of an elastic material, and is a cylindrical body having a C-shaped cross section that is broken in the longitudinal direction. The locking member 29 passed through the hole 28 is inserted into the locking hole 28 in a state where the diameter of the cylindrical body serving as the locking member 29 is reduced. It is passed through the locking hole 28 in a state of being elastically pressed against the inner wall. A seal ring 30 for sealing between the base 4 a and the connection hole 25 is mounted on the outer periphery of the base 4 a of the hose end 4.
[0028]
The socket 1 of the pipe joint according to the present embodiment prevents the end cover 31 having the closing portion 31a at the rear portion of the socket body 3 that closes the openings on both sides of the locking hole 28 and prevents the locking member 29 from coming off. It is mounted so as not to fall off from the socket body 3 by the means 32.
[0029]
The end cover 31 is based on a cylindrical body having an inner diameter capable of closely fitting to the rear part of the socket body 3 and having a front end opened and a rear end closed. Through the hose end 4 connected to the connection hole 25 formed in the rear part of the socket body 3 until the front end opening 34 is reached, and the end cover 31 does not hinder the rotation of the hose end 4. The bottom opening 35 is formed as described above.
[0030]
The end cover 31 is attached to the rear part of the socket body 3 so as to fit from the rear end side of the socket body 3. The side walls of the end cover 31 are closed portions 31a, and when the end cover 31 is fitted and mounted on the rear portion of the socket body 3, the locking portions 31a are opened on both sides of the rear portion of the socket body 3. The openings on both sides of the hole 28 are closed to prevent the locking member 29 from coming out.
[0031]
In this example, a locking projection 36 is formed on the inner peripheral surface of the end cover 31 on the front end opening 34 side as a drop-off preventing means 32 for preventing the end cover 31 attached to the rear part of the socket body 3 from falling off. Then, on the outer peripheral surface of the socket body 3, a locking recess 37 that can be locked with the locking projection 36 is formed, and when the end cover 31 is fitted to the rear part of the socket body 3 and mounted, The locking projection 36 is locked in the locking recess 37 by the material deformation of the cover 31. Furthermore, in this example, in order to more reliably prevent the end cover 31 from falling off, the front end of the end cover 31 attached to the rear part of the socket body 3 is fitted along the outer periphery of the socket body 3 and the sleeve 13. The sleeve cover 15 is inserted between the rear end of the sleeve cover 15 and the socket body 3 and is pressed by the sleeve cover 15.
[0032]
In this example, the locking member 29 is formed of a cylindrical body having a C-shaped cross section that is broken in the longitudinal direction, but may be formed of a rod-shaped member instead.
[0033]
In the present example configured as described above, the openings on both sides of the locking hole 28 through which the locking member 29 is passed are closed by the closing portion 31a of the end cover 31 attached to the rear portion of the socket body 3. Therefore, the closing member 31a reliably prevents the locking member 29 from coming out of the locking hole 28.
[0034]
The end cover 31 attached to the rear part of the socket body 3 has a locking projection 36 formed on the inner peripheral surface of the end cover 31 and a locking recess 37 formed on the outer peripheral surface of the socket body 3. The falling-off preventing means 32, which is locked by material deformation, prevents the end cover 31 from falling off from the rear part of the socket body 3, thereby opening both sides of the locking hole 28 through which the locking member 29 is passed. Is kept closed by the closing portion 31 a of the end cover 31, and the locking member 29 can be reliably prevented from coming out of the locking hole 28.
[0035]
In this embodiment, as the falling-off preventing means 32, a locking projection 36 is formed on the inner peripheral surface of the end cover 31 on the front end opening 34 side, and the locking projection 36 is formed on the outer peripheral surface of the socket body 3. Is formed on the inner peripheral surface of the end cover 31 on the front end opening 34 side, and the engaging concave portion 37 is formed on the outer peripheral surface of the socket body 3. You may form the locking convex part 36 which can be locked with the stop recessed part 37.
[0036]
Although not shown, a locking protrusion or a locking recess is formed on the outer peripheral surface of the end cover 31 on the side of the front end opening 34, and is fitted to the outer periphery of the socket body 3. On the inner peripheral surface of the rear end of the sleeve cover 15, a locking concave portion or a locking convex portion that can be locked to the locking convex portion or the locking concave portion is formed, and the front end of the end cover 31 is connected to the rear end of the sleeve cover 15. The locking projection or the locking recess formed on the outer peripheral surface of the end cover 31 on the side of the front end opening portion 34 is inserted into the inside of the sleeve cover 15, and the locking concave or the locking projection formed on the inner peripheral surface of the rear end of the sleeve cover 15. It may be designed to be locked to the.
[0037]
4 and 5 show a second embodiment of the socket of the pipe joint according to the present invention. FIG. 4 shows an end cover mounted on the rear part of the socket body of the socket of the pipe joint of this embodiment. FIG. 5 is an enlarged vertical sectional view, and FIG. 5 is a sectional view taken along line AA of FIG.
[0038]
The socket of the pipe joint of this embodiment differs from the first embodiment only in the means for preventing the end cover 31 from falling off, and has the same configuration as that of the first embodiment except for the above. For the part, the first example is cited, and the description is omitted.
[0039]
The end cover 31 of the socket of the pipe joint according to the present embodiment has an inner diameter capable of being tightly fitted to the rear portion of the socket body 3 and has a cylindrical shape having an open front end and a closed rear end, as in the first example. The hose end 4 connected to the connection hole 25 formed in the rear part of the socket body 3 is passed through the cylindrical body from the rear end closing part 33 to the bottom part or to the front end opening part 34 until it reaches the front end opening part 34. In addition, the end cover 31 has a shape in which a bottom opening 35 is formed so as not to hinder the rotation of the hose end 4. In the end cover 31 of the present example, the falling-off preventing means 32 for preventing the end cover 31 from falling off the socket body 3 is formed by forming the end cover 31 with an elastic material such as a synthetic resin, and comprising both side walls of the end cover 31. The closing portion 31a is provided with a locking projection 38 formed at the rear part of the socket body 3 and capable of fitting into the opening of the locking hole 28 opened on both sides thereof. The stop projection 38 is fitted and locked in the openings on both sides of the locking hole 28.
[0040]
In the present embodiment configured as described above, the locking projections 38 provided on the closing portion 31a of the end cover 31 attached to the rear portion of the socket body 3 allow the locking member 29 to pass through due to the elasticity of both side walls of the end cover 31. The end cover 31 is prevented from falling off from the rear part of the socket body 3 by fitting and locking into the openings on both sides of the locking hole 28, whereby the locking member 29 is passed therethrough. The state in which the openings on both sides of the hole 28 are closed by the closing portion 31a of the end cover 31 is maintained, and the locking member 29 can be reliably prevented from coming out of the locking hole 28.
[0041]
6 to 8 show a third embodiment of the socket of the pipe joint according to the present invention. FIG. 6 is a partial longitudinal sectional view showing the socket of the pipe joint of this embodiment, and FIG. FIG. 8 is a partial longitudinal sectional view showing a sleeve cover provided with an end cover portion that covers the rear portion of the socket body at an end, and FIG. 8 is a bottom view of the sleeve cover shown in FIG.
[0042]
The configuration of the socket of the pipe joint of this embodiment is the same as that of the first embodiment except for the sleeve cover 15 provided with an end cover portion 39 that covers the rear portion of the socket body 3 at the rear end. Are denoted by the same reference numerals, and description thereof is omitted.
[0043]
In this example, an end cover portion 39 that extends the rear end portion and covers the rear portion of the socket body 3 is provided integrally with the rear end portion of the sleeve cover 15 fitted to the outer periphery of the socket main body 3. . In the sleeve cover 15 in which the end cover portion 39 is integrally provided at the rear end, the shape of the end cover portion 39 is similar to that of the end cover 31 of the first example, and is formed at the rear portion of the socket body 3. Based on a cylindrical body having an inside diameter capable of tightly fitting and having a front end opened and a rear end closed, the front end opening of the cylindrical body is integrally connected to the rear end of the sleeve cover 15. Further, the hose end 4 connected to the connection hole 25 formed in the rear portion of the socket body 3 is passed through the end cover portion 39 from the rear end closing portion 40 to the bottom portion until reaching the sleeve cover 15. In addition, the bottom cover 41 has a bottom opening 41 so that the end cover 39 does not hinder the rotation of the hose end 4.
[0044]
The end cover portion 39 has a locking member that matches the locking hole 28 formed in the rear portion of the socket body 3 while the sleeve cover 15 is fitted to the sleeve 13 of the socket body 3 on both side walls thereof. An insertion hole 42 is provided, and the sleeve cover 15 is completely fitted to the sleeve 13 of the socket body 3, and the end cover 39 completely covers the rear part of the socket body 3. A closing portion 43 is provided to close the opening and prevent the locking member 29 from coming out.
[0045]
The sleeve cover 15 provided with the end cover portion 39 at the rear end having such a shape is fitted to the socket body 3 as follows.
[0046]
First, when the sleeve cover 15 is fitted from the rear end side of the socket body 3 and the locking member insertion hole 42 matches the locking hole 28 while the sleeve cover 15 is fitted to the sleeve 13 ( 9A), the base 4a of the hose end 4 is inserted through a bottom opening 41 formed from the rear end closing portion 40 of the end cover portion 39 to the bottom portion until reaching the sleeve cover 15, and the hose end 4 is inserted. Is fitted into a connection hole 25 formed in the rear part of the socket body 3, and the locking member 29 is inserted from the locking member insertion hole 42 to form an annular ring provided on the outer periphery of the base 4 a of the hose end 4. It is inserted into the locking hole 28 so as to pass through a part of the groove 27 (FIG. 9B). Thereby, the base 4a of the hose end 4 can be rotatably connected to the connection hole 28 formed in the rear part of the socket body 3.
[0047]
Thereafter, when the sleeve cover 15 is completely fitted to the sleeve 13 of the socket body 3 and the end cover portion 39 completely covers the rear portion of the socket body 3, a locking hole through which the locking member 29 is passed. The openings on both sides of the opening 28 are closed by the closing portions 43 (FIG. 9C). Thus, the closing member 43 reliably prevents the locking member 29 from coming out of the locking hole 28.
[0048]
10 to 12 show a fourth embodiment of the socket of the pipe joint according to the present invention. FIG. 10 is a front view of the socket of the pipe joint of the present embodiment, and FIG. FIG. 12 is a partially cutaway side view of the disassembled state of the locking member used in this example.
[0049]
The socket of the pipe joint of the present example is different from the first example in that the end cover 31 is not provided, and the socket of the pipe joint is provided with a locking member 44 different from the configuration of the locking member 29 in the first example. Since the configuration is similar to that of the example, portions corresponding to those of the first example are denoted by the same reference numerals, and description thereof is omitted.
[0050]
In this example, the engagement hole 28 is inserted through a part of an annular groove 27 provided on the outer periphery of the base 4a of the hose end 4 fitted in the connection hole 25 formed in the rear part of the socket body 3. The locking member 44 to be inserted is provided with a retaining head 45 larger than the locking hole 28 at both ends. The configuration of the locking member 44 of the present example in which the retaining head 45 larger than the locking hole 28 is provided at both ends is not particularly limited.
[0051]
For example, as shown in FIG. 12 (A), at one end of a rod-shaped member 46, a retaining head 45 larger than the locking hole 28 is provided, and the rod-shaped member 46 is inserted into the locking hole 28. Then, the other end may be protruded out of the locking hole 28, and the protruding portion may be crushed to provide a retaining head 45 larger than the locking hole 28.
[0052]
As shown in FIG. 12 (B), a retaining head 45 is formed at the outer end of the member 46A and the member 46B, which are divided into two parts in the longitudinal direction, and the inner end of the member 46A has A small hole 47 is formed in the axial direction, and a pin 48 is press-fitted into the small hole 47 at the inner end of the member 46B. The members 46A and 46B of the rod-shaped member 46 are formed in the locking holes 28. May be inserted from the opposite side, and a pin 48 formed at the inner end of the member 46B may be press-fitted and connected to the small hole 47 formed at the inner end of the member 46A.
[0053]
As shown in FIG. 12 (C), a bar-shaped member 46 is provided with a retaining head 45 larger than the locking hole 28 at one end and a pin 49 at the other end. A locking head 28 having a small hole 50 capable of press-fitting 49 is provided with a retaining head 45 larger than the locking hole 28. The rod-shaped member 46 is inserted into the locking hole 28, and a pin 49 protruding from the other end is inserted. The pin 49 may be projected out of the locking hole 28 and press-fitted into the small hole 50 of the retaining head 45 for connection.
[0054]
Also, as shown in FIG. 12D, a bar-shaped member 46 is provided with a retaining head 45 larger than the locking hole 28 at one end and a cylindrical portion 51 at the other end. A ring-shaped retaining head 45 having a hole 52 into which the cylindrical portion 51 can be fitted and having an outer diameter larger than the locking hole 28, and the rod-shaped member 46 is inserted into the locking hole 28. Then, the cylindrical portion 51 formed at the other end is projected out of the locking hole 28, and this cylindrical portion 51 is fitted into the hole 52 of the ring-shaped retaining head 45, and 51 may be expanded and connected in the outer peripheral direction.
[0055]
As described above, since the locking heads 45 larger than the locking holes 28 are provided at both ends of the locking members 44, the locking members 44 can be prevented from coming out of the locking holes 28, and the locking members 44 can be locked. The escape of the locking member 44 from the hole 28 is reliably prevented.
[0056]
Further, as another example, although not shown, a locking member 29 made of a cylindrical body having a C-shaped cross section which is split in the longitudinal direction shown in the first to third examples is inserted into the locking hole 28. Then, a locking member 44 as shown in FIGS. 12A, 12B, 12C and 12D can be inserted into the locking member 29. The member 44 and the locking member 29 can be prevented from coming out of the locking hole 28, and the locking member 44 and the locking member 29 can be reliably prevented from coming out of the locking hole 28.
[0057]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the socket of the pipe joint which concerns on this invention as mentioned above, with a simple structure, it fits into the locking hole formed in the rear part of a socket main body, and the connection hole formed in the rear part of a socket main body. Inserted through a part of the annular groove provided on the outer periphery of the base of the hose end, which has been inserted, and securely prevents the locking member that rotatably connects the base of the hose end to the connection hole from coming out of the locking hole can do.
[Brief description of the drawings]
FIG. 1 is a partial longitudinal sectional view showing a first embodiment of a socket of a pipe joint according to the present invention, showing a socket of the pipe joint of the present example and a plug connected to the socket.
FIG. 2 is an enlarged longitudinal sectional view showing an end cover mounted on a rear portion of the socket body of the first example.
FIG. 3 is a bottom view of the end cover shown in FIG. 2;
FIG. 4 is an enlarged longitudinal sectional view showing a second example of the embodiment of the socket of the pipe joint according to the present invention, and showing an end cover attached to a rear part of the socket body of the socket of the pipe joint of the present example. .
FIG. 5 is a sectional view taken along line AA of FIG. 4;
FIG. 6 is a partial longitudinal sectional view showing a third embodiment of the socket of the pipe joint according to the present invention, and showing the socket of the pipe joint of the present example.
FIG. 7 is a partial longitudinal sectional view showing a sleeve cover provided with an end cover portion that covers a rear portion of the socket body at a rear end.
FIG. 8 is a bottom view of the sleeve cover shown in FIG. 7;
FIGS. 9A, 9B, and 9C are explanatory views showing steps of fitting a sleeve cover to the socket body of the third example.
FIG. 10 shows a fourth embodiment of the socket of the pipe joint according to the present invention, and is a front view of the socket of the pipe joint of the present embodiment.
FIG. 11 is a left side view of FIG. 10;
12A, 12B, 12C, and 12D are explanatory views of a locking member used in a fourth example.
FIG. 13 is a partial longitudinal sectional view showing a socket of a conventional pipe joint.
[Explanation of symbols]
1 socket
2 Plug
3 Socket body
4 Hose end
4a Base of hose end
5 distribution holes
10 Locking mechanism
13 sleeve
25 Connection hole
27 annular groove
28 Lock hole
29 Locking member
30 Seal ring
31 End cover
31a Closed part
32 Dropout prevention means
33 Rear end closure
34 Front end opening
35 Bottom opening
36 locking projection
37 Locking recess
38 Locking projection
39 End cover
40 Rear end closure
41 Bottom opening
42 Locking member insertion hole
43 Closure
44 Locking member
45 Retaining head
46 Bar-shaped member
46A, 46B members
47 small hole
48 pins
49 pins
50 small holes
51 tubular part
52 holes

Claims

A socket of a pipe joint having an appropriate locking mechanism and capable of detachably connecting a plug, wherein a flow hole is formed in the front side of the socket body in the direction of the axis A, and the axial line is formed at the rear of the socket body. A connection hole is formed in the direction of the axis B intersecting A. A base of a hose end having a flow hole therein is rotatably fitted in the connection hole, and an annular groove is formed on an outer periphery of the base of the hose end. A locking hole is formed at a rear portion of the socket body and penetrates tangentially through a part of an annular groove provided on an outer periphery of a base of the hose end, and a locking hole is formed in the locking hole. In a socket of a pipe joint, a member is passed through and fitted in the annular groove, and the hose end is prevented from coming off in a rotatable state by the locking member.
At the rear of the socket body, an end cover having a closing portion for closing the opening on both sides of the locking hole and preventing the locking member from slipping out is attached by a falling-off preventing means so as not to fall off from the socket body. Fitting socket.

As a means for preventing the end cover from falling off, a locking convex portion is formed on one of the outer peripheral surface of the socket body and the inner peripheral surface of the end cover, and a locking concave portion capable of locking with the locking convex portion is formed on the other. The socket for a pipe joint according to claim 1, wherein the locking convex portion and the locking concave portion are locked by material deformation of an end cover.

As a means for preventing the end cover from falling off, a locking projection that can be fitted into the opening on both sides of the locking hole is provided in the closing portion of the end cover, and the locking projection is attached to both sides of the locking hole by the elasticity of the end cover. The socket for a pipe joint according to claim 1, wherein the socket is fitted and locked in an opening of the pipe joint.

A socket of a pipe joint capable of detachably connecting a plug by operating a sleeve, wherein a flow hole is formed in the front side of the socket body in the direction of the axis A, and the axis A is formed at the rear of the socket body. A connection hole is formed in the direction of the axis B intersecting with the connection hole. A base of a hose end having a flow hole therein is rotatably fitted in the connection hole, and an annular groove is formed on an outer periphery of the base of the hose end. A locking hole is provided at a rear portion of the socket body and penetrates tangentially through a part of an annular groove provided on an outer periphery of a base of the hose end, and a locking member is formed in the locking hole. Is passed through and fitted in the annular groove, and the hose end is prevented from coming off in a rotatable state by the locking member.
At the rear end of the sleeve cover fitted to the outer periphery of the socket main body, an end cover portion is provided to extend the rear end portion and cover the rear portion of the socket main body, and the sleeve cover is attached to the end cover portion. A locking member insertion hole matching the locking hole was provided during the fitting of the sleeve, and the sleeve cover was completely fitted to the sleeve of the socket body, and the end cover completely covered the rear portion of the socket body. A socket for a pipe joint, wherein a closing portion for closing openings on both sides of the locking hole and preventing the locking member from coming out is provided in the state.

A socket of a pipe joint having an appropriate locking mechanism and capable of detachably connecting a plug, wherein a flow hole is formed in the front side of the socket body in the direction of the axis A, and the axial line is formed at the rear of the socket body. A connection hole is formed in the direction of the axis B intersecting A. A base of a hose end having a flow hole therein is rotatably fitted in the connection hole, and an annular groove is formed on an outer periphery of the base of the hose end. A locking hole is formed at a rear portion of the socket body and penetrates tangentially through a part of an annular groove provided on an outer periphery of a base of the hose end, and a locking hole is formed in the locking hole. In a socket of a pipe joint, a member is passed through and fitted in the annular groove, and the hose end is prevented from coming off in a rotatable state by the locking member.
A socket for a pipe joint, wherein a retaining head larger than the locking hole is provided at both ends of the locking member.