JP7029301B2

JP7029301B2 - Pipe fittings

Info

Publication number: JP7029301B2
Application number: JP2018012994A
Authority: JP
Inventors: 武也佐々; 大樹田神
Original assignee: Nitto Kohki Co Ltd
Current assignee: Nitto Kohki Co Ltd
Priority date: 2018-01-29
Filing date: 2018-01-29
Publication date: 2022-03-03
Anticipated expiration: 2038-01-29
Also published as: JP2019132303A

Description

本発明は、施錠子を利用して互いに着脱可能に連結される雄型管継手部材と雌型管継手部材とからなる管継手に関する。 The present invention relates to a pipe joint composed of a male pipe joint member and a female pipe joint member that are detachably connected to each other by using a lock.

雄型管継手部材とそれに対応する雌型管継手部材とを施錠子によって着脱可能に連結するようにした管継手が広く利用されている。例えば特許文献１に示す管継手は、雌型管継手部材が施錠子を有し、雄型管継手部材が長手軸線の方向に変位可能に配置されたスリーブを有していて、雄型管継手部材と雌型管継手部材とが連結された状態において、施錠子が雄型管継手部材の施錠子係止溝に部分的に受け入れられるとともにスリーブがこの施錠子を径方向外側から保持することにより連結状態が維持されるようになっている。 A pipe joint in which a male pipe joint member and a corresponding female pipe joint member are detachably connected by a locker is widely used. For example, in the pipe joint shown in Patent Document 1, the female pipe joint member has a locker, and the male pipe joint member has a sleeve displaceable in the direction of the longitudinal axis. In the state where the member and the female pipe joint member are connected, the locker is partially received in the locker locking groove of the male pipe joint member, and the sleeve holds the locker from the radial outside. The connected state is maintained.

管継手は様々な環境で使用されるが、塵埃が多い環境で使用される場合には可動部分の隙間に塵埃が入り込むことにより管継手の動作が妨げられることがある。特に施錠子に塵埃が付着して施錠子の動きが妨げられると適切な着脱ができなくなる虞がある。通常、スリーブと雌型管継手部材との間はスリーブが円滑に変位できるようにある程度の隙間があるため、連結状態においてもこの隙間から周囲の塵埃がスリーブの内側に侵入して施錠子に付着することがある。 The pipe joint is used in various environments, but when it is used in an environment with a lot of dust, the operation of the pipe joint may be hindered by the dust getting into the gap of the moving part. In particular, if dust adheres to the locker and the movement of the locker is hindered, there is a risk that proper attachment / detachment may not be possible. Normally, there is a certain gap between the sleeve and the female pipe joint member so that the sleeve can be smoothly displaced, so even in the connected state, surrounding dust invades the inside of the sleeve and adheres to the locker even in the connected state. I have something to do.

施錠子に塵埃が付着することを防止するようにした管継手として、特許文献２に示すものがある。この管継手は、雌型管継手部材が施錠子とスリーブとを有し、連結状態においては、スリーブの先端部が雄型管継手部材に取り付けられたシール部材に当接することによりスリーブと雄型管継手部材との間が密封係合されるようになっている。これによりスリーブと雄型管継手部材との間の隙間が塞がれて、周囲の塵埃がこの隙間から内部に浸入することを防止している。また、連結後にスリーブの後方位置に別の弾性リングを取り付けることにより、スリーブの後方への変位を防止するとともにスリーブの後端側も密封するようになっている。 As a pipe joint that prevents dust from adhering to the locker, there is one shown in Patent Document 2. In this pipe joint, the female pipe joint member has a locker and a sleeve, and in the connected state, the tip of the sleeve abuts on the seal member attached to the male pipe joint member to form the sleeve and the male mold. It is designed to be hermetically engaged with the pipe joint member. As a result, the gap between the sleeve and the male pipe joint member is closed, and surrounding dust is prevented from entering the inside through this gap. Further, by attaching another elastic ring to the rear position of the sleeve after connection, the sleeve is prevented from being displaced rearward and the rear end side of the sleeve is also sealed.

特許第５０４７３００号公報Japanese Patent No. 5047300 特許第６１７１５０８号公報Japanese Patent No. 6171508

連結状態においてスリーブと雄型管継手部材との間の隙間を密封するようにした上述の管継手においては、基本的にはスリーブはスプリングによってシール部材に押圧される。そのため、スリーブがシール部材にどの程度の力で押し付けられるかはスプリングの付勢力に依存する。スプリングの付勢力を大きくすればスリーブがより強くシール部材に押圧されてより確実に密封されることになるが、そうすると連結を解除する際にスリーブを後方に引くのに要する力が大きくなり作業性が大きく低下する。また、スリーブの後方に弾性リングを取り付けることによりスリーブが後方に変位するのを防止して密封状態が維持されるようになっているが、連結作業の度に弾性リングの取り付け・取り外しをするのは煩雑である。 In the above-mentioned pipe joint in which the gap between the sleeve and the male pipe joint member is sealed in the connected state, the sleeve is basically pressed against the seal member by a spring. Therefore, how much force the sleeve is pressed against the sealing member depends on the urging force of the spring. If the urging force of the spring is increased, the sleeve will be pressed more strongly by the sealing member and will be sealed more securely, but then the force required to pull the sleeve backward when disconnecting will increase and workability will increase. Is greatly reduced. Also, by attaching an elastic ring to the rear of the sleeve, the sleeve is prevented from being displaced backward and the sealed state is maintained, but the elastic ring is attached and detached every time the connection work is done. Is complicated.

そこで発明は、上述の従来技術の問題に鑑みて、管継手部材のスリーブと対応管継手部材との間の密封状態をより簡易な操作でより確実に維持することが可能となる管継手を提供することを目的とする。 Therefore, in view of the above-mentioned problems of the prior art, the present invention provides a pipe joint capable of more reliably maintaining a sealed state between the sleeve of the pipe joint member and the corresponding pipe joint member by a simpler operation. The purpose is to do.

すなわち本発明は、
先端開口から後方に延びる流体通路を画定する筒状の管継手本体を有する管継手部材と、筒状の対応管継手本体を有し該管継手部材に着脱可能に連結される対応管継手部材とを備え、該管継手本体と該対応管継手本体とのうちの一方に施錠子が径方向に変位可能に保持され、該管継手本体と該対応管継手本体とのうちの他方が該施錠子を受け入れる施錠子係止溝を有し、該施錠子が該施錠子係止溝に係合することにより該管継手部材と該対応管継手部材とが連結されるようにされた管継手における管継手部材であって、
該管継手本体の外周面上で該管継手本体の長手軸線の方向及び周方向に変位可能に配置され、該対応管継手部材との連結状態において該施錠子の径方向外側に位置して該施錠子を該施錠子係止溝内に保持する施錠位置と、該施錠位置から後方に変位して該施錠子の保持を解除する解錠位置との間で該長手軸線の方向に変位可能とされるとともに、該施錠位置において、該解錠位置に向かって変位可能となる変位許容位置と、該長手軸線の方向で該対応管継手本体と係合して該解錠位置に向かって後方に変位することが阻止される変位阻止位置との間で該周方向に変位可能とされたスリーブをさらに有し、
連結状態において該スリーブが該施錠位置で該変位阻止位置にあるときに、該スリーブが該対応管継手本体に密封係合するようにされた、管継手部材を提供する。 That is, the present invention
A pipe joint member having a tubular pipe joint body that defines a fluid passage extending rearward from the tip opening, and a corresponding pipe joint member having a tubular corresponding pipe joint body and detachably connected to the pipe joint member. The locker is held in one of the pipe joint body and the corresponding pipe joint body so as to be radially displaceable, and the other of the pipe joint body and the corresponding pipe joint body is the locker. A pipe in a pipe joint having a locker locking groove that receives the locker so that the pipe joint member and the corresponding pipe joint member are connected by engaging the locker with the locker locking groove. It is a fitting member,
It is displaceably arranged on the outer peripheral surface of the pipe joint body in the direction of the longitudinal axis of the pipe joint body and in the circumferential direction, and is located radially outside the locker in a state of being connected to the corresponding pipe joint member. It is possible to displace in the direction of the longitudinal axis between the locking position where the locker is held in the locker locking groove and the unlocking position where the locker is displaced rearward from the lock position to release the lock. At the same time, at the locking position, the displacement allowable position that can be displaced toward the unlocking position and the corresponding pipe joint body engaged with the corresponding pipe joint body in the direction of the longitudinal axis to be rearward toward the unlocking position. Further having a sleeve displaceable in the circumferential direction with and from a displacement blocking position where displacement is prevented.
Provided is a pipe fitting member in which the sleeve is hermetically engaged with the corresponding pipe joint body when the sleeve is in the displacement blocking position in the locked position in the connected state.

当該管継手部材においては、対応管継手部材との連結状態においてスリーブを変位阻止位置に回転させることにより、スリーブが管継手本体と長手軸線の方向で係合して解錠位置に向かって後方に変位することが阻止されるとともに、スリーブが対応管継手本体に密封係合するようになっている。すなわち当該管継手部材においては、密封係合面が対応管継手本体に密封係合した状態をスリーブと管継手本体との係合により維持するようになっているため、従来技術のように容易に収縮するスプリングによって密封係合を維持する場合に比べて、より確実に密封状態を維持することが可能となる。これにより、スリーブと対応管継手本体との間から周囲の塵埃が侵入して施錠子等の可動部材に塵埃が付着することをより確実に防止することが可能となる。また、そのようなより確実な密封状態をスリーブを回転させるという簡易な操作によって実現することができる。 In the pipe joint member, by rotating the sleeve to the displacement prevention position in the connected state with the corresponding pipe joint member, the sleeve engages with the pipe joint body in the direction of the longitudinal axis and moves backward toward the unlocked position. The sleeve is sealed and engaged with the corresponding pipe joint body while being prevented from being displaced. That is, in the pipe joint member, the state in which the sealed engagement surface is hermetically engaged with the corresponding pipe joint body is maintained by the engagement between the sleeve and the pipe joint body, so that it is easy as in the prior art. It is possible to maintain the sealed state more reliably than when the sealed engagement is maintained by the contracting spring. This makes it possible to more reliably prevent the surrounding dust from entering from between the sleeve and the corresponding pipe joint main body and adhering to the movable member such as the locker. Further, such a more reliable sealed state can be realized by a simple operation of rotating the sleeve.

好ましくは、
該スリーブを該施錠位置に向かって付勢するスプリングをさらに備え、
該スリーブが該施錠位置において該変位許容位置にあるときに、該スリーブが、該スプリングの付勢力によって先端方向に押圧されて該対応管継手本体に密封係合するようにすることができる。 Preferably,
Further provided with a spring that urges the sleeve towards the locking position,
When the sleeve is in the displacement permissible position in the locked position, the sleeve can be pressed toward the tip by the urging force of the spring so as to be hermetically engaged with the corresponding pipe joint body.

このような構成により、連結状態においてスリーブを変位阻止位置に回転していない状態でもスリーブが対応管継手本体に密封係合した状態となるため、仮にスリーブの回転操作を怠った場合にも施錠子等を周囲の塵埃からある程度保護することが可能となる。 With such a configuration, the sleeve is sealed and engaged with the corresponding pipe joint body even when the sleeve is not rotated to the displacement prevention position in the connected state. Therefore, even if the sleeve rotation operation is neglected, the locker is locked. It is possible to protect such things from surrounding dust to some extent.

またこの場合には、該スリーブを該施錠位置において該変位阻止位置に回転させたときに、該スリーブが該先端方向に変位して該対応管継手本体にさらに強く押圧されるようにすることができる。 Further, in this case, when the sleeve is rotated to the displacement blocking position at the locking position, the sleeve may be displaced toward the tip end and pressed more strongly against the corresponding pipe joint body. can.

具体的には、該スリーブが、外側スリーブと、該外側スリーブと該管継手本体との間に保持された内側スリーブとを有し、該スプリングは該管継手本体と該内側スリーブとの間に配置されていて、該外側スリーブは該内側スリーブを介して該スプリングに付勢されるようにすることができる。 Specifically, the sleeve has an outer sleeve and an inner sleeve held between the outer sleeve and the fitting body, and the spring is between the fitting body and the inner sleeve. Arranged, the outer sleeve can be urged to the spring via the inner sleeve.

好ましくは、該管継手本体が、該スリーブによって径方向外側から覆われた位置に第１係止部を有し、該スリーブがその内周面に設けられた第２係止部を有しており、該変位阻止位置において該第２係止部が該第１係止部に該長手軸線の方向で係合することにより該スリーブが後方に変位することが阻止されるようにすることができる。 Preferably, the pipe joint body has a first locking portion at a position covered from the outside radially by the sleeve, and the sleeve has a second locking portion provided on its inner peripheral surface. It is possible to prevent the sleeve from being displaced rearward by engaging the second locking portion with the first locking portion in the direction of the longitudinal axis at the displacement blocking position. ..

互いに係合する第１係止部と第２係止部に塵埃が付着するとスリーブの操作を円滑に行なうことが困難になる虞があるが、このような構成によりこれら第１係止部及び第２係止部がスリーブによって外から隠れた位置となるため、第１係止部と第２係止部とに周囲の塵埃が付着することが抑制される。これによりスリーブの操作性を維持することが可能となる。 If dust adheres to the first locking portion and the second locking portion that engage with each other, it may be difficult to smoothly operate the sleeve. 2 Since the locking portion is hidden from the outside by the sleeve, it is possible to prevent the surrounding dust from adhering to the first locking portion and the second locking portion. This makes it possible to maintain the operability of the sleeve.

具体的には、
該第１係止部が該管継手本体の外周面に固定された球状部材を有し、
該第２係止部が、該球状部材が該長手軸線の方向に通過可能な通過溝と、該通過溝の後端から該周方向に延びて後方に面する係止面とを有しており、
該スリーブが該変位許容位置にあるときには、該通過溝が該球状部材と該長手軸線の方向で整合して該スリーブが該施錠位置と該解錠位置との間で該長手軸線の方向に変位するときに該球状部材が該通過溝を通るようになり、該スリーブが該施錠位置において該変位阻止位置にあるときには、該係止面が該球状部材と該長手軸線の方向で係合して該スリーブが後方に変位することが阻止されるようにすることができる。 In particular,
The first locking portion has a spherical member fixed to the outer peripheral surface of the pipe joint body.
The second locking portion has a passing groove through which the spherical member can pass in the direction of the longitudinal axis, and a locking surface extending in the circumferential direction from the rear end of the passing groove and facing rearward. Ori,
When the sleeve is in the displacement allowable position, the passage groove aligns with the spherical member in the direction of the longitudinal axis, and the sleeve is displaced in the direction of the longitudinal axis between the locking position and the unlocking position. When the spherical member passes through the passage groove and the sleeve is in the displacement blocking position at the locking position, the locking surface engages the spherical member in the direction of the longitudinal axis. The sleeve can be prevented from being displaced rearward.

好ましくは、
該対応管継手本体が環状の端面シール部材を有し、
該スリーブが、先端方向に面し該先端方向に向かって径方向外側に傾斜した環状の密封係合面を有しており、
連結状態において該スリーブが該施錠位置で該変位阻止位置にあるときに、該密封係合面が該端面シール部材に密封係合するようにすることができる。 Preferably,
The corresponding pipe joint body has an annular end face sealing member, and the corresponding pipe joint body has an annular end face sealing member.
The sleeve has an annular sealing engagement surface that faces the tip and is radially outwardly inclined towards the tip.
The hermetically sealed engagement surface can be hermetically engaged with the end face seal member when the sleeve is in the displacement blocking position at the locking position in the coupled state.

端面シール部材を介して密封係合することにより、より確実な密封係合を実現可能となる。 By sealing and engaging via the end face sealing member, more reliable sealing engagement can be realized.

好ましくは、該管継手部材の該スリーブが、該管継手本体の外周面に摺動して密封係合する環状の摺動シール部材を有するようにすることができる。 Preferably, the sleeve of the pipe fitting member may have an annular sliding seal member that slides and seals and engages on the outer peripheral surface of the pipe fitting body.

このような構成により、周囲の塵埃がスリーブと管継手本体との間から当該管継手部材の内部に浸入することも防止できるようになり、施錠子等に塵埃が付着することをより確実に防止することが可能となる。 With such a configuration, it becomes possible to prevent the surrounding dust from entering the inside of the pipe joint member from between the sleeve and the pipe joint body, and more reliably prevent the dust from adhering to the locker or the like. It becomes possible to do.

また本発明は、
上述の管継手部材と、
筒状の対応管継手本体を有し、該管継手部材に着脱可能に連結される対応管継手部材と、
を備える管継手を提供する。 Further, the present invention
With the above-mentioned pipe joint member,
A corresponding pipe joint member having a tubular corresponding pipe joint body and being detachably connected to the pipe joint member,
Provide a pipe fitting provided with.

以下、本発明に係る管継手の実施形態を添付図面に基づき説明する。 Hereinafter, embodiments of the pipe joint according to the present invention will be described with reference to the accompanying drawings.

本発明の第１の実施形態に係る管継手の非連結状態における側面断面図である。It is a side sectional view in the unconnected state of the pipe joint which concerns on 1st Embodiment of this invention. 図１のＡ－Ａ線における断面図である。FIG. 3 is a cross-sectional view taken along the line AA of FIG. 図１の管継手の連結状態を示す図であって、スリーブの周方向位置が変位許容位置にある状態を示す図である。It is a figure which shows the connection state of the pipe joint of FIG. 1, and is the figure which shows the state which the position in the circumferential direction of a sleeve is a displacement allowable position. 図３におけるスリーブ及び施錠子の周囲の拡大図である。FIG. 3 is an enlarged view of the periphery of the sleeve and the locker in FIG. 図３の連結状態からスリーブを解錠位置に長手軸線の方向で変位させて、連結を解除している状態と示す図である。FIG. 3 is a diagram showing a state in which the sleeve is displaced from the connected state of FIG. 3 to the unlocked position in the direction of the longitudinal axis to release the connection. 図１の管継手の連結状態を示す図であって、図３の状態からスリーブを変位阻止位置に回転させて、スリーブの密封係合面が端面シール部材にさらに強く押圧された状態を示す図である。It is a figure which shows the connection state of the pipe joint of FIG. 1, and is the figure which shows the state which the sleeve is rotated to the displacement prevention position from the state of FIG. Is. 図６におけるスリーブ及び施錠子の周囲の拡大図である。FIG. 6 is an enlarged view of the periphery of the sleeve and the locker in FIG. 本発明の第２の実施形態に係る管継手の非連結状態における側面断面図である。It is a side sectional view in the unconnected state of the pipe fitting which concerns on 2nd Embodiment of this invention. 図８の管継手の連結状態を示す図であって、スリーブの周方向位置が変位許容位置にある状態を示す図である。It is a figure which shows the connection state of the pipe joint of FIG. 8, and is the figure which shows the state which the position in the circumferential direction of a sleeve is a displacement allowable position. 図８の管継手の連結状態を示す図であって、図９の状態からスリーブを変位阻止位置に回転させて、スリーブの密封係合面が雄型管継手本体にさらに強く押圧された状態を示す図である。It is a figure which shows the connection state of the pipe joint of FIG. 8, and is the state where the sleeve is rotated to the displacement prevention position from the state of FIG. It is a figure which shows.

本発明の第１の実施形態に係る管継手１００は、図１に示すように、互いに着脱可能に連結される雄型管継手部材（管継手部材）１０２と雌型管継手部材（対応管継手部材）１０４とからなる。 As shown in FIG. 1, the pipe joint 100 according to the first embodiment of the present invention has a male pipe joint member (pipe joint member) 102 and a female pipe joint member (corresponding pipe joint) that are detachably connected to each other. Member) 104.

雌型管継手部材１０４は、先端開口１１０から後方（図で見て左方）に延びる流体通路１１２を画定する筒状の雌型管継手本体（対応管継手本体）１１４と、雌型管継手本体１１４を径方向に貫通した施錠子保持孔１１６内において径方向に変位可能に保持された施錠子１１８と、を備える。雌型管継手本体１１４は、施錠子保持孔１１６から径方向外側に離れた位置で施錠子保持孔１１６の外側に延びるカバー部１２０を有し、このカバー部１２０によって施錠子１１８が施錠子保持孔１１６から径方向外側に外れないようにしている。またカバー部１２０には、環状の端面シール部材１２２が取り付けられている。 The female pipe joint member 104 includes a tubular female pipe joint body (corresponding pipe joint body) 114 that defines a fluid passage 112 extending rearward (to the left in the figure) from the tip opening 110, and a female pipe joint. It includes a locker 118 that is held so as to be radially displaceable in the locker holding hole 116 that penetrates the main body 114 in the radial direction. The female pipe joint main body 114 has a cover portion 120 extending outward from the locker holding hole 116 at a position radially outward from the locker holding hole 116, and the locker 118 holds the locker by the cover portion 120. It is prevented from coming off radially outward from the hole 116. An annular end face sealing member 122 is attached to the cover portion 120.

雄型管継手部材１０２は、先端開口１３０から後方（図で見て右方）に延びる流体通路１３２を画定する筒状の雄型管継手本体（管継手本体）１３４と、雄型管継手本体１３４の外周面１３４ａ上で雄型管継手本体１３４の長手軸線Ｌの方向及び周方向に変位可能に配置されたスリーブ１３６とを備える。雄型管継手本体１３４の外周面１３４ａには、後述する連結状態において雌型管継手部材１０４の施錠子１１８を受け入れる環状の施錠子係止溝１３８が形成されている。スリーブ１３６は、外側スリーブ１４０と内側スリーブ１４２とからなり、内側スリーブ１４２は外側スリーブ１４０と雄型管継手本体１３４との間に保持されている。内側スリーブ１４２は、径方向外側に突出した係止突部１４４が外側スリーブ１４０の内周面１４０ａに取り付けられた止め輪１４６に係合することにより、外側スリーブ１４０に対して図１の位置からさらに先端方向（図で見て左方向）には変位しないようになっている。雄型管継手部材１０２はさらに、雄型管継手本体１３４と内側スリーブ１４２との間に設定されたスプリング１４８を備える。このスプリング１４８によって、内側スリーブ１４２は直接的に先端方向に付勢され、外側スリーブ１４０は内側スリーブ１４２を介して間接的に先端方向に付勢される。外側スリーブ１４０の後端部１５０には、雄型管継手本体１３４の外周面１３４ａに摺動して密封係合する環状の摺動シール部材１５２が取り付けられている。スリーブ１３６は、施錠位置（図３）と施錠位置から後方に変位した解錠位置（図５）との間で長手軸線Ｌの方向に変位可能となっており、スプリング１４８によって施錠位置に向かって付勢されている。 The male pipe joint member 102 includes a tubular male pipe joint body (pipe joint body) 134 that defines a fluid passage 132 extending rearward (to the right in the figure) from the tip opening 130, and a male pipe joint body. The sleeve 136 is provided so as to be displaceable in the direction of the longitudinal axis L and the circumferential direction of the male pipe joint main body 134 on the outer peripheral surface 134a of the 134. An annular locker locking groove 138 that receives the locker 118 of the female pipe joint member 104 in the connected state described later is formed on the outer peripheral surface 134a of the male pipe joint main body 134. The sleeve 136 is composed of an outer sleeve 140 and an inner sleeve 142, and the inner sleeve 142 is held between the outer sleeve 140 and the male pipe joint main body 134. In the inner sleeve 142, the locking protrusion 144 protruding outward in the radial direction engages with the retaining ring 146 attached to the inner peripheral surface 140a of the outer sleeve 140, so that the inner sleeve 142 can be viewed from the position shown in FIG. 1 with respect to the outer sleeve 140. Furthermore, it does not displace in the tip direction (to the left when viewed in the figure). The male pipe joint member 102 further includes a spring 148 set between the male pipe joint body 134 and the inner sleeve 142. By this spring 148, the inner sleeve 142 is directly urged toward the tip, and the outer sleeve 140 is indirectly urged toward the tip via the inner sleeve 142. An annular sliding seal member 152 that slides and seals and engages with the outer peripheral surface 134a of the male pipe joint main body 134 is attached to the rear end portion 150 of the outer sleeve 140. The sleeve 136 is displaceable in the direction of the longitudinal axis L between the locking position (FIG. 3) and the unlocking position displaced rearward from the locking position (FIG. 5), and is displaced toward the locking position by the spring 148. Being urged.

図１及び図２に示すように、雄型管継手本体１３４は、その外周面１３４ａに形成された固定穴１５４に圧入された球状部材（第１係止部）１５６を有する。球状部材１５６は例えば金属で形成された剛球とすることができる。また外側スリーブ１４０は、その内周面１４０ａから径方向内側に突出して周方向に延びる係止部（第２係止部）１５８を有し、この係止部１５８は雄型管継手本体１３４の長手軸線Ｌの方向に延びる通過溝１６０と、通過溝１６０の後端から周方向に延びて後方に面する係止面１６２とを有する。通過溝１６０は、球状部材１５６が通過可能な大きさを有しており、図２に示すようにスリーブ１３６の周方向位置が通過溝１６０と球状部材１５６とが長手軸線Ｌの方向で整合する変位許容位置となっているときには、スリーブ１３６は球状部材１５６を通過溝１６０に通しながら長手軸線Ｌの方向に変位することができる。外側スリーブ１４０には、内周面１４０ａから径方向内側に突出するように２つのボルト１６４が取り付けられている。これらボルト１６４は、スリーブ１３６が施錠位置にあるときに周方向で球状部材１５６と重なる位置にある。外側スリーブ１４０が周方向に回転されたときにボルト１６４が球状部材１５６に当たることにより、外側スリーブ１４０の回転範囲を制限している。なお、球状部材１５６と通過溝１６０は外から隠れた位置にあり直接視認することができないため、球状部材１５６と通過溝１６０の位置が外から分かるように雄型管継手本体１３４と外側スリーブ１４０とに印を付けて、スリーブ１３６が変位許容位置にあることを容易に判断できるようにしてもよい。 As shown in FIGS. 1 and 2, the male pipe joint main body 134 has a spherical member (first locking portion) 156 press-fitted into a fixing hole 154 formed on its outer peripheral surface 134a. The spherical member 156 can be, for example, a rigid sphere made of metal. Further, the outer sleeve 140 has a locking portion (second locking portion) 158 that protrudes radially inward from the inner peripheral surface 140a and extends in the circumferential direction, and this locking portion 158 is a male pipe joint main body 134. It has a passage groove 160 extending in the direction of the longitudinal axis L, and a locking surface 162 extending in the circumferential direction from the rear end of the passage groove 160 and facing rearward. The passing groove 160 has a size that allows the spherical member 156 to pass through, and as shown in FIG. 2, the circumferential position of the sleeve 136 is aligned with the passing groove 160 and the spherical member 156 in the direction of the longitudinal axis L. When the displacement allowable position is set, the sleeve 136 can be displaced in the direction of the longitudinal axis L while passing the spherical member 156 through the passing groove 160. Two bolts 164 are attached to the outer sleeve 140 so as to project radially inward from the inner peripheral surface 140a. These bolts 164 are positioned so as to overlap the spherical member 156 in the circumferential direction when the sleeve 136 is in the locked position. When the outer sleeve 140 is rotated in the circumferential direction, the bolt 164 hits the spherical member 156, thereby limiting the rotation range of the outer sleeve 140. Since the spherical member 156 and the passing groove 160 are hidden from the outside and cannot be directly visually recognized, the male pipe joint main body 134 and the outer sleeve 140 can be seen from the outside so that the positions of the spherical member 156 and the passing groove 160 can be seen from the outside. And may be marked so that the sleeve 136 can be easily determined to be in the displacement allowable position.

図１の非連結状態から、雄型管継手本体１３４を雌型管継手本体１１４の流体通路１１２内に挿入していくと、まず施錠子１１８が雄型管継手本体１３４の外周面１３４ａによって径方向外側に変位され、続いて径方向外側に変位した施錠子１１８に内側スリーブ１４２の先端面１４２ａが当接する。さらに挿入していくと、施錠子１１８に当接した内側スリーブ１４２はスプリング１４８を圧縮しながら雄型管継手本体１３４に対して相対的に後方に変位していく。また、外側スリーブ１４０は、先端方向に向かって径方向外側に傾斜した密封係合面１６６が端面シール部材１２２に当接し、雄型管継手本体１３４に対して相対的に後方に変位する。雄型管継手本体１３４の施錠子係止溝１３８が施錠子１１８と径方向で整合する位置にまで挿入されると、施錠子１１８が内側スリーブ１４２によって径方向内側に押し込まれて施錠子係止溝１３８内に受け入れられ、施錠子係止溝１３８に係合する。そうすると内側スリーブ１４２の先端面１４２ａと施錠子１１８との係合が解除され、内側スリーブ１４２がスプリング１４８の付勢力によって先端方向に変位し施錠子１１８に対して径方向外側の位置となる。これにより、施錠子１１８が内側スリーブ１４２によって施錠子係止溝１３８内に保持され、図３に示すように雄型管継手部材１０２と雌型管継手部材１０４とが互いに連結された連結状態となる。図３の連結状態においては、スリーブ１３６は、長手軸線Ｌの方向では施錠子１１８を施錠子係止溝１３８内に保持する施錠位置となり、周方向では通過溝１６０が球状部材１５６と長手軸線Ｌの方向で整合して長手軸線Ｌの方向に変位可能とされた変位許容位置にある。このとき、図４から分かるように、内側スリーブ１４２の先端面１４２ａは雌型管継手本体１１４には当接していない。そのため、外側スリーブ１４０は内側スリーブ１４２を介してスプリング１４８によって先端方向に付勢され、密封係合面１６６はスプリング１４８の付勢力によって端面シール部材１２２に押し付けられる。外側スリーブ１４０は、密封係合面１６６において、スプリング１４８による比較的に弱い力で端面シール部材１２２を介して雌型管継手本体１１４と密封係合した状態となる。なお、このときに内側スリーブ１４２の先端面１４２ａが雌型管継手本体１１４に当接するようにしてもよい。その場合には、外側スリーブ１４０の密封係合面１６６はスプリング１４８の付勢力によっては端面シール部材１２２に押し付けられない。 When the male pipe joint main body 134 is inserted into the fluid passage 112 of the female pipe joint main body 114 from the unconnected state of FIG. 1, the locker 118 first has a diameter due to the outer peripheral surface 134a of the male pipe joint main body 134. The tip surface 142a of the inner sleeve 142 abuts on the locker 118 displaced outward in the direction and subsequently displaced outward in the radial direction. As it is further inserted, the inner sleeve 142 in contact with the locker 118 is displaced rearward relative to the male pipe joint main body 134 while compressing the spring 148. Further, in the outer sleeve 140, the sealing engagement surface 166 inclined outward in the radial direction toward the tip end abuts on the end surface sealing member 122 and is displaced rearward relative to the male pipe joint main body 134. When the locker locking groove 138 of the male pipe joint body 134 is inserted to a position where it is radially aligned with the locker 118, the locker 118 is pushed inward in the radial direction by the inner sleeve 142 to lock the locker. It is received in the groove 138 and engages with the locker locking groove 138. Then, the engagement between the tip surface 142a of the inner sleeve 142 and the locker 118 is released, and the inner sleeve 142 is displaced in the tip direction by the urging force of the spring 148 to be positioned radially outward with respect to the locker 118. As a result, the locker 118 is held in the locker locking groove 138 by the inner sleeve 142, and the male pipe joint member 102 and the female pipe joint member 104 are connected to each other as shown in FIG. Become. In the connected state of FIG. 3, the sleeve 136 is in a locked position for holding the locker 118 in the locker locking groove 138 in the direction of the longitudinal axis L, and the passing groove 160 is the spherical member 156 and the longitudinal axis L in the circumferential direction. It is in a displacement allowable position that is consistent with the direction of 1 and is displaceable in the direction of the longitudinal axis L. At this time, as can be seen from FIG. 4, the tip surface 142a of the inner sleeve 142 does not abut on the female pipe joint main body 114. Therefore, the outer sleeve 140 is urged toward the tip end by the spring 148 via the inner sleeve 142, and the sealing engagement surface 166 is pressed against the end face sealing member 122 by the urging force of the spring 148. The outer sleeve 140 is in a state of being hermetically engaged with the female pipe joint main body 114 via the end face sealing member 122 on the hermetically sealed engagement surface 166 with a relatively weak force by the spring 148. At this time, the tip surface 142a of the inner sleeve 142 may be brought into contact with the female pipe joint main body 114. In that case, the sealing engagement surface 166 of the outer sleeve 140 is not pressed against the end surface sealing member 122 by the urging force of the spring 148.

雄型管継手部材１０２と雌型管継手部材１０４との連結を解除するときには、スリーブ１３６が周方向での変位許容位置にある状態で、外側スリーブ１４０を後方に引く。そうすると、内側スリーブ１４２も一緒に後方に変位して、スリーブ１３６は図３の施錠位置から図５に示す解錠位置となる。この解錠位置においては、内側スリーブ１４２による施錠子１１８に対する径方向外側からの保持が解除されて施錠子１１８が径方向外側に変位可能な状態となり、施錠子１１８による施錠子係止溝１３８に対する係止が解除される。この状態で雄型管継手部材１０２を雌型管継手部材１０４から引き抜くことにより連結を解除できる。 When disconnecting the male pipe joint member 102 and the female pipe joint member 104, the outer sleeve 140 is pulled backward while the sleeve 136 is in the displacement allowable position in the circumferential direction. Then, the inner sleeve 142 is also displaced rearward, and the sleeve 136 is changed from the locking position of FIG. 3 to the unlocking position shown in FIG. At this unlocking position, the inner sleeve 142 is released from the radial outside holding of the lock 118 so that the lock 118 can be displaced radially outward, and the lock 118 with respect to the lock lock groove 138. The lock is released. In this state, the male pipe joint member 102 can be pulled out from the female pipe joint member 104 to release the connection.

上述の連結状態においては、図４からよく分かるように、球状部材１５６は部分的に通過溝１６０内に位置しており、スリーブ１３６の係止面１６２は周方向で球状部材１５６と重なる位置にある。そのため、外側スリーブ１４０を図３及び図４の変位許容位置から周方向に回転させると、係止面１６２が球状部材１５６に当たり、外側スリーブ１４０は球状部材１５６に沿って先端方向に変位する。外側スリーブ１４０が先端方向に向かって雌型管継手本体１１４の側に変位することにより、図６及び図７に示すように外側スリーブ１４０の密封係合面１６６は端面シール部材１２２にさらに強く押圧されて、端面シール部材１２２は大きく圧縮される。これにより密封係合面１６６は雌型管継手本体１１４に対して端面シール部材１２２を介してさらに強固に密封係合される。このとき内側スリーブ１４２はその先端面１４２ａが雌型管継手部材１０４に当接した状態となっており、スプリング１４８の付勢力は外側スリーブ１４０にはもはや作用していない。 In the above-mentioned connected state, as can be clearly seen from FIG. 4, the spherical member 156 is partially located in the passing groove 160, and the locking surface 162 of the sleeve 136 is positioned so as to overlap the spherical member 156 in the circumferential direction. be. Therefore, when the outer sleeve 140 is rotated in the circumferential direction from the displacement allowable positions of FIGS. 3 and 4, the locking surface 162 hits the spherical member 156, and the outer sleeve 140 is displaced toward the tip along the spherical member 156. As the outer sleeve 140 is displaced toward the tip toward the female pipe joint body 114, the sealing engagement surface 166 of the outer sleeve 140 is pressed more strongly against the end face sealing member 122 as shown in FIGS. 6 and 7. Therefore, the end face sealing member 122 is greatly compressed. As a result, the sealed engagement surface 166 is more firmly sealed and engaged with the female pipe joint body 114 via the end face sealing member 122. At this time, the tip surface 142a of the inner sleeve 142 is in contact with the female pipe joint member 104, and the urging force of the spring 148 is no longer acting on the outer sleeve 140.

スリーブ１３６が、施錠位置においてその周方向位置が図６及ぶ図７の変位阻止位置にあるときには、スリーブ１３６の係止面１６２が雄型管継手本体１３４の球状部材１５６に長手軸線Ｌの方向で係合し、スリーブ１３６が解錠位置に向かって後方に変位することが阻止される。したがって、スリーブ１３６を変位阻止位置に回転することにより、スリーブ１３６が誤って解錠位置に変位して連結が意図せず解除されてしまうことを防止することができる。また、雌型管継手本体１１４に対する外側スリーブ１４０の長手軸線Ｌの方向での位置が一定に保たれるため、スリーブ１３６の密封係合面１６６による端面シール部材１２２に対する押圧の状態を一定に維持することができる。よって、スリーブ１３６と雌型管継手本体１１４との間の密封状態をより確実に維持することが可能となり、スリーブ１３６と雌型管継手本体１１４との間から周囲の塵埃が侵入して施錠子１１８などの可動部材に付着することをより確実に防止することが可能となる。また当該管継手１００においては、雄型管継手本体１３４の球状部材１５６がスリーブ１３６によって覆われた位置にあり、通過溝１６０と係止面１６２とからなる係止部１５８が外側スリーブ１４０の内周面１４０ａに形成されており、互いに係合する球状部材１５６と係止部とがスリーブ１３６によって外から隠れた位置にあるため、これら球状部材１５６と係止部には塵埃が付着しにくい。さらには、上述のように外側スリーブ１４０の後端部１５０には摺動シール部材１５２が設けられていてスリーブ１３６と雄型管継手部材１０２との間も密封係合されているため、スリーブ１３６と雄型管継手部材１０２との間から内部に塵埃が浸入することも防止している。 When the sleeve 136 has its circumferential position at the locked position at the displacement preventing position shown in FIG. 6, the locking surface 162 of the sleeve 136 is attached to the spherical member 156 of the male pipe joint body 134 in the direction of the longitudinal axis L. Engagement prevents the sleeve 136 from being displaced rearward towards the unlocked position. Therefore, by rotating the sleeve 136 to the displacement blocking position, it is possible to prevent the sleeve 136 from being accidentally displaced to the unlocking position and unintentionally released from the connection. Further, since the position of the outer sleeve 140 with respect to the female pipe joint main body 114 in the direction of the longitudinal axis L is kept constant, the state of pressing the end face sealing member 122 by the sealing engagement surface 166 of the sleeve 136 is kept constant. can do. Therefore, it becomes possible to more reliably maintain the sealed state between the sleeve 136 and the female pipe joint main body 114, and the surrounding dust invades from between the sleeve 136 and the female pipe joint main body 114 to lock the locker. It is possible to more reliably prevent the attachment to a movable member such as 118. Further, in the pipe joint 100, the spherical member 156 of the male pipe joint main body 134 is located at a position covered by the sleeve 136, and the locking portion 158 composed of the passing groove 160 and the locking surface 162 is inside the outer sleeve 140. Since the spherical member 156 and the locking portion that are formed on the peripheral surface 140a and engage with each other are hidden from the outside by the sleeve 136, dust is unlikely to adhere to the spherical member 156 and the locking portion. Further, as described above, the sliding seal member 152 is provided at the rear end portion 150 of the outer sleeve 140, and the sleeve 136 and the male pipe joint member 102 are also hermetically engaged with each other. It also prevents dust from entering from between the male pipe joint member 102 and the male pipe joint member 102.

本発明の第２の実施形態に係る管継手２００は、図８に示すように、互いに着脱可能に連結される雄型管継手部材（対応管継手部材）２０２と雌型管継手部材（管継手部材）２０４とからなる。当該管継手２００は、第１の実施形態に係る管継手１００に対して、後述するようにスリーブ２３６が雌型管継手部材２０４に設けられている点において主として異なる。 As shown in FIG. 8, the pipe joint 200 according to the second embodiment of the present invention has a male pipe joint member (corresponding pipe joint member) 202 and a female pipe joint member (pipe joint) that are detachably connected to each other. Member) 204. The pipe joint 200 is mainly different from the pipe joint 100 according to the first embodiment in that a sleeve 236 is provided on the female pipe joint member 204 as described later.

雄型管継手部材２０２は、先端開口２３０から後方に延びる流体通路２３２を画定する筒状の雄型管継手本体（対応管継手本体）２３４を有し、その外周面２３４ａには環状の施錠子係止溝２３８が形成されている。 The male pipe joint member 202 has a tubular male pipe joint body (corresponding pipe joint body) 234 that defines a fluid passage 232 extending rearward from the tip opening 230, and an annular locker is provided on the outer peripheral surface 234a thereof. A locking groove 238 is formed.

雌型管継手部材２０４は、先端開口２１０から後方に延びる流体通路２１２を画定する筒状の雌型管継手本体（管継手本体）２１４と、雌型管継手本体２１４を貫通した施錠子保持孔２１６内において径方向に変位可能に保持された施錠子２１８と、雌型管継手本体２１４の外周面２１４ａ上で雌型管継手本体２１４の長手軸線Ｌの方向及び周方向に変位可能に配置されたスリーブ２３６とを備える。雌型管継手本体２１４の外周面２１４ａには球状部材（第１係止部）２５６が固定されている。またスリーブ２３６には、スリーブ２３６の後端面である係止面２６２と、係止面２６２から先端方向（図で見て右方）に延びる切欠き部２６０とからなる係止部（第２係止部）２５８が形成されている。スリーブ２３６が、図８に示すように、切欠き部２６０が球状部材２５６と長手軸線Ｌの方向で整合する変位許容位置にあるときには、スリーブ２３６は図９に示すように施錠子２１８を径方向外側から保持する施錠位置から、施錠子２１８の保持を解除する図示しない解錠位置にまで長手軸線Ｌの方向で後方（図で見て左方）に変位することができる。 The female pipe joint member 204 has a tubular female pipe joint body (pipe joint body) 214 that defines a fluid passage 212 extending rearward from the tip opening 210, and a locker holding hole that penetrates the female pipe joint body 214. The locker 218 held so as to be radially displaceable in 216 and the locker 218 are displaceably arranged in the direction of the longitudinal axis L of the female pipe joint body 214 and on the outer peripheral surface 214a of the female pipe joint body 214. It is provided with a sleeve 236. A spherical member (first locking portion) 256 is fixed to the outer peripheral surface 214a of the female pipe joint main body 214. Further, the sleeve 236 has a locking portion (second engagement) including a locking surface 262 which is a rear end surface of the sleeve 236 and a notch portion 260 extending from the locking surface 262 in the tip direction (right side in the drawing). Stop) 258 is formed. As shown in FIG. 8, when the sleeve 236 is in a displacement allowable position where the notch 260 is aligned with the spherical member 256 in the direction of the longitudinal axis L, the sleeve 236 radially locks the locker 218 as shown in FIG. It can be displaced rearward (to the left in the figure) in the direction of the longitudinal axis L from the locking position held from the outside to the unlocking position (not shown) for releasing the holding of the locker 218.

雄型管継手部材２０２を連結するときには、スリーブ２３６を解錠位置に引いた状態で雄型管継手本体２３４を雌型管継手本体２１４に挿入して施錠子係止溝２３８が施錠子２１８と整合する位置として、スリーブ２３６を施錠位置に戻す。これにより図９の連結状態となる。この連結状態においては、スリーブ２３６の先端の環状の密封係合面２６６が雄型管継手本体２３４に当接して、スリーブ２３６が雌型管継手部材２０４に対して図８の位置から僅かに後方に変位している。スリーブ２３６はスプリング２４８によって施錠位置に向かって先端方向に付勢されているため、スリーブ２３６の密封係合面２６６はスプリング２４８の付勢力によって雄型管継手本体２３４に押圧された状態となる。 When connecting the male pipe joint member 202, the male pipe joint body 234 is inserted into the female pipe joint body 214 with the sleeve 236 pulled to the unlocked position, and the locker locking groove 238 is connected to the locker 218. The sleeve 236 is returned to the locked position as a matching position. As a result, the connected state shown in FIG. 9 is obtained. In this connected state, the annular sealing engaging surface 266 at the tip of the sleeve 236 abuts on the male fitting body 234, and the sleeve 236 is slightly rearward from the position of FIG. 8 with respect to the female fitting member 204. It is displaced to. Since the sleeve 236 is urged toward the tip toward the locked position by the spring 248, the sealed engaging surface 266 of the sleeve 236 is pressed against the male pipe joint body 234 by the urging force of the spring 248.

図９の連結状態において、スリーブ２３６は、長手軸線Ｌの方向では施錠子２１８を施錠子係止溝２３８内に保持する施錠位置にあり、周方向では切欠き部２６０が球状部材２５６と長手軸線Ｌの方向で整合して長手軸線Ｌの方向に変位可能とされる変位許容位置にある。このとき球状部材２５６は部分的に切欠き部２６０内に位置しており、スリーブ２３６の係止面２６２は周方向で球状部材２５６と重なる位置にある。そのため、スリーブ２３６を図９の変位許容位置から周方向に回転させると、係止面２６２が球状部材２５６に当たり、スリーブ２３６は球状部材２５６に沿って先端方向に変位する。スリーブ２３６が先端方向に向かって雄型管継手本体２３４の側に変位することにより、図１０に示すようにスリーブ２３６の密封係合面２６６は雄型管継手本体２３４にさらに強く押圧される。これによりスリーブ２３６の密封係合面２６６が雄型管継手本体２３４と直接密封係合した状態となる。 In the connected state of FIG. 9, the sleeve 236 is in the locking position for holding the locker 218 in the locker locking groove 238 in the direction of the longitudinal axis L, and the notch portion 260 is in the circumferential direction with the spherical member 256 and the longitudinal axis. It is in a displacement allowable position that is aligned in the direction of L and can be displaced in the direction of the longitudinal axis L. At this time, the spherical member 256 is partially located in the notch 260, and the locking surface 262 of the sleeve 236 is positioned so as to overlap the spherical member 256 in the circumferential direction. Therefore, when the sleeve 236 is rotated in the circumferential direction from the displacement allowable position in FIG. 9, the locking surface 262 hits the spherical member 256, and the sleeve 236 is displaced toward the tip along the spherical member 256. As the sleeve 236 is displaced toward the tip of the male pipe joint body 234, the sealed engagement surface 266 of the sleeve 236 is further strongly pressed against the male pipe joint body 234 as shown in FIG. As a result, the sealed engagement surface 266 of the sleeve 236 is in a state of being directly sealed and engaged with the male pipe joint main body 234.

以上に本発明の実施形態について説明をしたが、本発明はこれら実施形態に限定されるものではない。例えば、第１の実施形態に係る管継手１００と第２の実施形態に係る管継手２００がそれぞれ備える構成を適宜組み合わせることができる。具体的には、第１の実施形態において、スリーブを一体の部材としたり、端面シール部材を無くしてスリーブの密封係合面と雌型管継手本体とが直接係合したりするようにすることができる。逆に第２の実施形態において第１の実施形態が有する端面シール部材などの構成を採用することもできる。また、特にスリーブを一体の部材として構成した場合には、スリーブを付勢するスプリングは必ずしも必要ではない。スリーブを施錠位置に保持するための球状部材と係止面の構成は、例えばスリーブに球状部材を設けて雄型管継手本体又は雌型管継手本体に係止面を設けるようにしたり、球状部材を球状以外の円柱などの他の形状の突起としたりするなど、任意の他の構成とすることができる。また、係止面を周方向で傾斜した面とすることにより、スリーブを変位許容位置から変位阻止位置に回転させたときのスリーブの先端方向への変位をより緩やかにして、回転操作に必要な力を小さくするようにしてもよい。 Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments. For example, the configurations included in the pipe joint 100 according to the first embodiment and the pipe joint 200 according to the second embodiment can be appropriately combined. Specifically, in the first embodiment, the sleeve may be an integral member, or the end face sealing member may be eliminated so that the sealed engagement surface of the sleeve and the female pipe joint body are directly engaged. Can be done. On the contrary, in the second embodiment, the configuration of the end face sealing member or the like included in the first embodiment can be adopted. Further, especially when the sleeve is configured as an integral member, a spring for urging the sleeve is not always necessary. The configuration of the spherical member and the locking surface for holding the sleeve in the locked position is, for example, to provide a spherical member on the sleeve so that the male pipe joint body or the female pipe joint body is provided with a locking surface, or the spherical member. Can be any other configuration, such as a protrusion having another shape such as a cylinder other than a spherical shape. In addition, by making the locking surface an inclined surface in the circumferential direction, the displacement toward the tip of the sleeve when the sleeve is rotated from the displacement allowable position to the displacement prevention position is made gentler, which is necessary for the rotation operation. You may try to reduce the force.

１００管継手
１０２雄型管継手部材（管継手部材）
１０４雌型管継手部材（対応管継手部材）
１１０先端開口
１１２流体通路
１１４雌型管継手本体（対応管継手本体）
１１６施錠子保持孔
１１８施錠子
１２０カバー部
１２２端面シール部材
１３０先端開口
１３２流体通路
１３４雄型管継手本体（管継手本体）
１３４ａ外周面
１３６スリーブ
１３８施錠子係止溝
１４０外側スリーブ
１４０ａ内周面
１４２内側スリーブ
１４２ａ先端面
１４４係止突部
１４６止め輪
１４８スプリング
１５０後端部
１５２摺動シール部材
１５４固定穴
１５６球状部材（第１係止部）
１５８係止部（第２係止部）
１６０通過溝
１６２係止面
１６４ボルト
１６６密封係合面
２００管継手
２０２雄型管継手部材（対応管継手部材）
２０４雌型管継手部材（管継手部材）
２１０先端開口
２１２流体通路
２１４雌型管継手本体（管継手本体）
２１４ａ外周面
２１６施錠子保持孔
２１８施錠子
２３０先端開口
２３２流体通路
２３４雄型管継手本体（対応管継手本体）
２３４ａ外周面
２３６スリーブ
２３８施錠子係止溝
２４８スプリング
２５６球状部材（第１係止部）
２５８係止部（第２係止部）
２６０切欠き部
２６２係止面
２６６密封係合面
Ｌ長手軸線 100 Pipe fitting 102 Male pipe fitting member (pipe fitting member)
104 Female type pipe joint member (corresponding pipe joint member)
110 Tip opening 112 Fluid passage 114 Female fitting body (corresponding pipe fitting body)
116 Locker holding hole 118 Locker 120 Cover 122 End face sealing member 130 Tip opening 132 Fluid passage 134 Male pipe fitting body (pipe fitting body)
134a Outer surface 136 Sleeve 138 Locker locking groove 140 Outer sleeve 140a Inner peripheral surface 142 Inner sleeve 142a Tip surface 144 Locking protrusion 146 Retaining ring 148 Spring 150 Rear end 152 Sliding seal member 154 Fixing hole 156 Spherical member ( 1st locking part)
158 Locking part (second locking part)
160 Tongguogou 162 Locking surface 164 Bolt 166 Sealed engagement surface 200 Pipe fitting 202 Male pipe fitting member (corresponding pipe fitting member)
204 Female pipe fitting member (pipe fitting member)
210 Tip opening 212 Fluid passage 214 Female fitting body (pipe fitting body)
214a Outer peripheral surface 216 Locker holding hole 218 Locker 230 Tip opening 232 Fluid passage 234 Male pipe fitting body (corresponding pipe joint body)
234a Outer peripheral surface 236 Sleeve 238 Locker locking groove 248 Spring 256 Spherical member (first locking portion)
258 locking part (second locking part)
260 Notch 262 Locking surface 266 Sealed engaging surface L Longitudinal axis

Claims

A pipe joint member having a tubular pipe joint body that defines a fluid passage extending rearward from the tip opening, and a corresponding pipe joint member having a tubular corresponding pipe joint body and detachably connected to the pipe joint member. The locker is held in one of the pipe joint body and the corresponding pipe joint body so as to be radially displaceable, and the other of the pipe joint body and the corresponding pipe joint body is the locker. A pipe in a pipe joint having a locker locking groove that receives the locker so that the pipe joint member and the corresponding pipe joint member are connected by engaging the locker with the locker locking groove. It is a fitting member,
It is displaceably arranged on the outer peripheral surface of the pipe joint body in the direction of the longitudinal axis of the pipe joint body and in the circumferential direction, and is located radially outside the locker in a state of being connected to the corresponding pipe joint member. It is possible to displace in the direction of the longitudinal axis between the locking position where the locker is held in the locker locking groove and the unlocking position where the locker is displaced rearward from the lock position to release the lock. At the same time, at the locking position, the displacement allowable position that can be displaced toward the unlocking position and the corresponding pipe joint body engaged with the corresponding pipe joint body in the direction of the longitudinal axis to be rearward toward the unlocking position. Further having a sleeve displaceable in the circumferential direction with and from a displacement blocking position where displacement is prevented.
When the sleeve is rotated from the displacement allowable position to the displacement prevention position at the locked position in the connected state, the sleeve is displaced toward the tip and pressed against the corresponding pipe joint body so as to be hermetically engaged. Displaced pipe joint member.

Further provided with a spring that urges the sleeve towards the locking position,
When the sleeve is in the displacement permissible position in the locked position, the sleeve is pressed toward the tip by the urging force of the spring to hermetically engage with the corresponding pipe joint body , and the sleeve is displaceable. The pipe joint member according to claim 1 , wherein the sleeve is further strongly pressed against the corresponding pipe joint body to be hermetically engaged when rotated from the position to the displacement preventing position .

The sleeve has an outer sleeve and an inner sleeve held between the outer sleeve and the fitting body, and the spring is disposed between the fitting body and the inner sleeve. The pipe fitting member according to claim 2 , wherein the outer sleeve is urged to the spring via the inner sleeve.

The pipe joint body has a first locking portion at a position covered from the outside in the radial direction by the sleeve, and the sleeve has a second locking portion provided on the inner peripheral surface thereof. The sleeve is prevented from being displaced rearward by engaging the second locking portion with the first locking portion in the direction of the longitudinal axis at the displacement blocking position, according to claims 1 to 1. The pipe fitting member according to any one of 3 .

The first locking portion has a spherical member fixed to the outer peripheral surface of the pipe joint body.
The second locking portion has a passing groove through which the spherical member can pass in the direction of the longitudinal axis, and a locking surface extending in the circumferential direction from the rear end of the passing groove and facing rearward. Ori,
When the sleeve is in the displacement allowable position, the passage groove aligns with the spherical member in the direction of the longitudinal axis, and the sleeve is displaced in the direction of the longitudinal axis between the locking position and the unlocking position. When the spherical member passes through the passage groove and the sleeve is in the displacement blocking position at the locking position, the locking surface engages the spherical member in the direction of the longitudinal axis. The pipe joint member according to claim 4 , wherein the sleeve is prevented from being displaced rearward.

The corresponding pipe joint body has an annular end face sealing member, and the corresponding pipe joint body has an annular end face sealing member.
The sleeve has an annular sealing engagement surface that faces the tip and is radially outwardly inclined towards the tip.
13 . The pipe fitting member described.

The pipe joint member according to any one of claims 1 to 6 , wherein the sleeve of the pipe joint member has an annular sliding seal member that slides and seals and engages with the outer peripheral surface of the pipe joint body. ..

The pipe fitting member according to any one of claims 1 to 7 .
A corresponding pipe joint member having a tubular corresponding pipe joint body and being detachably connected to the pipe joint member,
With pipe fittings.