JP6193282B2 - Pipe fitting - Google Patents

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JP6193282B2
JP6193282B2 JP2015041224A JP2015041224A JP6193282B2 JP 6193282 B2 JP6193282 B2 JP 6193282B2 JP 2015041224 A JP2015041224 A JP 2015041224A JP 2015041224 A JP2015041224 A JP 2015041224A JP 6193282 B2 JP6193282 B2 JP 6193282B2
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slide valve
joint member
female
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displaced
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JP2016161066A (en
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山下　盡
盡 山下
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Nitto Kohki Co Ltd
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Description

本発明は、スライドバルブを有する管継手に関し、より詳細には、雌型継手部材のスライドバルブが雄型継手部材と施錠子によって結合されるようにされた管継手に関する。   The present invention relates to a pipe joint having a slide valve, and more particularly to a pipe joint in which a slide valve of a female joint member is coupled to a male joint member by a lock.

雄型継手部材と雌型継手部材とからなる管継手において、雌型継手部材が流体通路を開閉するためのスライドバルブを内蔵し、雄型継手部材を雌型継手部材の流体通路内に挿入したときにスライドバルブが雄型継手部材に押されて流体通路が開放されるようにしたものがある。このスライドバルブは、一般に、Ｏリングなどのシールリングによって流体通路の内周面と密封係合した状態で流体通路に沿って変位して流体通路を開閉するようにされ、またスプリングによって流体通路を閉止する閉止位置に向かって付勢されるようにされている。このような管継手においては、例えば雌型継手部材に雄型継手部材を連結しスライドバルブが流体通路を開放する開放位置にある状態で長期間放置された場合に、シールリングが流体通路やスライドバルブに固着するなどして雄型継手部材が取り外されてもスライドバルブがスプリングの付勢力だけでは閉止位置にまで変位せず、流体通路が開放されたままとなってしまう虞があった。このような問題を解決するため、雄型継手部材を雌型継手部材内に挿入してスライドバルブを閉止位置から開放位置に変位させるときに、スライドバルブに設けられている施錠部材が該雄型継手部材と係合してスライドバルブと雄型継手部材とが一体的に結合された状態とし、スライドバルブが開放位置になったときに雌型継手部材に設けられた係合子がスライドバルブに係合することにより雄型継手部材が雌型継手部材に連結されるようにした管継手が開発されている（特許文献１、２）。このようなスライドバルブ結合型の管継手においては、たとえシールリングが固着するなどしてスライドバルブがスプリングの付勢力だけでは閉止位置に戻らない状態となったとしても、スライドバルブは施錠部材によって雄型継手部材に結合されているので、雄型継手部材を雌型継手部材から引き抜くときに雄型継手部材によって強制的に引っ張られて閉止位置にまで変位されるようになる。したがって、雌型継手部材の流体通路が開放された状態で雄型継手部材が取り外されることを防止することができる。   In a pipe joint comprising a male joint member and a female joint member, the female joint member has a built-in slide valve for opening and closing the fluid passage, and the male joint member is inserted into the fluid passage of the female joint member. In some cases, the slide valve is pushed by the male joint member to open the fluid passage. In general, the slide valve is displaced along the fluid passage in a state of sealing engagement with the inner peripheral surface of the fluid passage by a seal ring such as an O-ring, and opens and closes the fluid passage by a spring. It is made to urge toward the closing position which closes. In such a pipe joint, for example, when the male joint member is connected to the female joint member and the slide valve is left in an open position where the fluid passage is opened, the seal ring is left in the fluid passage or the slide. Even if the male joint member is removed by being fixed to the valve or the like, the slide valve may not be displaced to the closed position only by the urging force of the spring, and the fluid passage may remain open. In order to solve such a problem, when the male joint member is inserted into the female joint member and the slide valve is displaced from the closed position to the open position, the locking member provided on the slide valve is The slide valve and the male joint member are integrally coupled by engaging with the joint member, and the engagement element provided on the female joint member is engaged with the slide valve when the slide valve is in the open position. Pipe joints in which a male joint member is connected to a female joint member by combining them have been developed (Patent Documents 1 and 2). In such a slide valve coupling type pipe joint, even if the seal ring is fixed and the slide valve does not return to the closed position only by the urging force of the spring, the slide valve is locked by the locking member. Since it is coupled to the mold joint member, when the male joint member is pulled out from the female joint member, it is forcibly pulled by the male joint member and displaced to the closed position. Therefore, it is possible to prevent the male joint member from being removed while the fluid passage of the female joint member is opened.

特許第４４３７９７３号公報Japanese Patent No. 4437973 特許第３４８３８５０号公報Japanese Patent No. 3484850

上述の従来のスライドバルブ結合型の管継手においては、スライドバルブに設けられた施錠子は、係合子に対して前方側（雄型継手部材が挿入される側）に配置され、且つ係合子よりも前方側でのみ変位するようになっている。そのため、施錠子を有しない通常の管継手に比べて、少なくとも施錠子の移動距離の分だけ全長を長くする必要が生じ、管継手が大型化してしまうという問題があった。   In the above-described conventional slide valve coupling type pipe joint, the lock provided on the slide valve is disposed on the front side (the side on which the male joint member is inserted) with respect to the engagement element, and from the engagement element. Is also displaced only on the front side. Therefore, compared with a normal pipe joint having no locking element, it is necessary to lengthen the entire length by at least the movement distance of the locking element, and there is a problem that the pipe joint becomes large.

本発明はこのような点に鑑み、従来のスライドバルブ結合型の管継手に比べて長さ方向での小型化が可能となる管継手を提供することを目的とする。   SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a pipe joint that can be downsized in the length direction as compared with a conventional slide valve coupling type pipe joint.

すなわち本発明は、
施錠凹部を有する雄型継手部材を連結する雌型継手部材であって、
流体通路を有する筒状の雌型継手本体と、
該雌型継手本体の該流体通路内に配置されたスライドバルブであって、該流体通路を閉止する閉止位置と該流体通路を開放する開放位置との間で該流体通路の長手軸線の方向で変位可能とされた筒状のスライドバルブと、
該スライドバルブに保持された施錠子であって、該スライドバルブの内周面から突出し雄型継手部材の施錠凹部と係合して該スライドバルブと該雄型継手部材とを該長手軸線の方向で相対的に変位しないようにする施錠位置と、該施錠位置から該スライドバルブの径方向外側に変位して該施錠凹部との係合を解除する非施錠位置との間で変位可能とされた施錠子と、
該雌型継手本体に保持された係合子であって、該雌型継手本体の内周面から突出し該スライドバルブに係合して該スライドバルブが該閉止位置に向かって変位しないようにする係合位置と、該係合位置から径方向外側に変位して該スライドバルブとの該係合を解除して該スライドバルブが該開放位置に変位することを許容する非係合位置との間で変位可能とされた係合子と、
該雌型継手本体の外周面上において該長手軸線の方向で摺動可能に配置され、該係合子が該非係合位置に変位することを許容する解除位置と、該係合子を該係合位置に拘束する拘束位置との間で変位可能とされたスリーブと、
を備え、
該スライドバルブが該閉止位置にある状態で該雄型継手部材を該雌型継手本体の該流体通路内に挿入したときに、該施錠子が、該施錠位置に変位して該雄型継手部材の該施錠凹部に係合されるとともに該スライドバルブが該雄型継手部材によって押されて該開放位置に向かって変位され、
該スライドバルブが該開放位置と該閉止位置との間及び該開放位置にあるときには、該施錠子は、該雌型継手本体の内周面に係合して該施錠位置に拘束されて、該施錠凹部に係合した状態に維持され、
該スライドバルブが該開放位置に変位されたときに、該係合子が該係合位置に変位するとともに該スリーブが該拘束位置に変位して、該雄型継手部材が該スライドバルブを介して該雌型継手本体に連結され、
該スリーブを該拘束位置から該解除位置に変位させて該雄型継手部材を該流体通路から引き抜くときに、該スライドバルブが該雄型継手部材とともに該開放位置から該閉止位置にまで変位されるようにされており、
該スライドバルブが該閉止位置と該開放位置との間で変位されたときに、該施錠子が該長手軸線の方向で該係合子を越えて変位するようにされた、雌型継手部材を提供する。 That is, the present invention
A female joint member for connecting a male joint member having a locking recess,
A cylindrical female joint body having a fluid passage;
A slide valve disposed in the fluid passage of the female joint body between a closed position for closing the fluid passage and an open position for opening the fluid passage in the direction of the longitudinal axis of the fluid passage; A cylindrical slide valve that can be displaced;
A locking element held by the slide valve, which protrudes from the inner peripheral surface of the slide valve and engages with a locking recess of the male joint member, thereby moving the slide valve and the male joint member in the direction of the longitudinal axis It is possible to displace between a locked position that prevents relative displacement at the position and a non-locked position that displaces the slide valve radially outward from the locked position and releases the engagement with the locked recess. Lockers,
An engagement element held by the female joint body, which protrudes from the inner peripheral surface of the female joint body and engages with the slide valve so that the slide valve is not displaced toward the closed position. Between the engagement position and the non-engagement position that displaces radially outward from the engagement position to release the engagement with the slide valve and allow the slide valve to move to the open position. An engagement element that is displaceable;
A release position that is slidably disposed in the direction of the longitudinal axis on the outer peripheral surface of the female joint body, and allows the engagement element to be displaced to the non-engagement position; and A sleeve that is displaceable between a restraining position restrained by
With
When the male joint member is inserted into the fluid passage of the female joint body in a state where the slide valve is in the closed position, the lock is displaced to the lock position and the male joint member And the slide valve is pushed by the male joint member and displaced toward the open position.
When the slide valve is between the open position and the closed position and in the open position, the lock is engaged with the inner peripheral surface of the female joint body and is restrained to the lock position. Maintained in engagement with the locking recess,
When the slide valve is displaced to the open position, the engagement element is displaced to the engagement position and the sleeve is displaced to the restraining position, and the male joint member is moved through the slide valve. Connected to the female fitting body,
When the sleeve is displaced from the restraining position to the release position and the male joint member is pulled out from the fluid passage, the slide valve is displaced from the open position to the closed position together with the male joint member. And
A female joint member is provided wherein the locking element is displaced beyond the engagement element in the direction of the longitudinal axis when the slide valve is displaced between the closed position and the open position. To do.

当該雌型継手部材においては、施錠子が長手軸線の方向で係合子を越えて変位するように構成されているので、施錠子が係合子に対して前方側（雄型継手部材が挿入される側）でのみ変位するようにされた従来の管継手に比べて、施錠子をより後方側に配置することができるようになる。これにより、従来の管継手に比べて、長手軸線の方向での長さを短く設計することが可能となる。   In the female joint member, the locking element is configured to displace beyond the engaging element in the direction of the longitudinal axis, so that the locking element is on the front side of the engaging element (the male coupling member is inserted). As compared with the conventional pipe joint that is displaced only on the side), the lock can be arranged on the rear side. Thereby, compared with the conventional pipe joint, it becomes possible to design the length in the direction of a longitudinal axis short.

好ましくは、該施錠子と該係合子とが、該雌型継手本体の周方向において互いにずれた位置に配置されているようにすることができる。   Preferably, the locking element and the engaging element can be arranged at positions shifted from each other in the circumferential direction of the female joint body.

さらに好ましくは、該雌型継手本体と該スライドバルブとが、該長手軸線の周りで互いに回転しないようにすることができる。   More preferably, the female joint body and the slide valve can be prevented from rotating with respect to each other about the longitudinal axis.

このような構成により、スライドバルブが閉止位置と開放位置との間で変位する際に施錠子と係合子とが干渉しないようにすることが可能となる。   With such a configuration, it is possible to prevent the locking element and the engaging element from interfering when the slide valve is displaced between the closed position and the opened position.

好ましくは、該係合子が、該係合位置において該スライドバルブの先端係合面と係合するようにされているようにすることができる。   Preferably, the engagement element can be adapted to engage with a tip engagement surface of the slide valve at the engagement position.

溝によって係合子と係合するようにされている従来の管継手にくらべて、スライドバルブの長手軸線の方向での長さを短くすることができ、それによって雌型継手部材自体の長さも短くすることが可能となる。   Compared to the conventional pipe joint that is engaged with the engagement element by the groove, the length in the direction of the longitudinal axis of the slide valve can be shortened, and thereby the length of the female joint member itself is also shortened. It becomes possible to do.

好ましくは、該雌型継手本体と該スライドバルブとの間に配置され、該スライドバルブを該閉止位置に向かって付勢するスプリングをさらに備えるようにすることができる。   Preferably, a spring that is disposed between the female joint body and the slide valve and biases the slide valve toward the closed position can be further provided.

このような構成によって、雄型継手部材が連結されていない状態においてスライドバルブが開放位置に向かって押されてしまったとしても、スプリングの付勢力によって自動的に閉止位置に戻るようにすることが可能となる。   With such a configuration, even if the slide valve is pushed toward the open position in a state where the male joint member is not connected, it can be automatically returned to the closed position by the biasing force of the spring. It becomes possible.

好ましくは、
該雌型継手本体の該流体通路内に配置されたステムであって、該雌型継手本体に固定された基部と、該基部から該長手軸線の方向に延びる軸部と、該軸部の先端に配置された拡径部と、を有するステムをさらに備え、
該スライドバルブが該閉止位置にあるときには、該スライドバルブと該ステムの拡径部とが密封係合して該流体通路を閉止し、該スライドバルブが該開放位置にあるときには、該スライドバルブと該ステムの該拡径部との係合が解除されて該流体通路を開放するようにすることができる。 Preferably,
A stem disposed in the fluid passage of the female joint body, a base fixed to the female joint body, a shaft extending from the base in the direction of the longitudinal axis, and a tip of the shaft A stem having a diameter-expanded portion disposed in
When the slide valve is in the closed position, the slide valve and the enlarged diameter portion of the stem are sealingly engaged to close the fluid passage, and when the slide valve is in the open position, The fluid passage can be opened by releasing the engagement of the stem with the enlarged diameter portion.

また本発明は、
施錠凹部を有する雄型継手部材と、
該雄型継手部材と連結される上記の雌型継手部材と、
を備える管継手を提供する。 The present invention also provides
A male joint member having a locking recess;
The female joint member connected to the male joint member;
A pipe joint is provided.

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。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a pipe joint according to the present invention will be described with reference to the accompanying drawings.

本発明の管継手の雄型継手部材が雌型継手部材から取り外された状態における側面断面図であり、図２のI−I線における断面図である。It is side surface sectional drawing in the state from which the male coupling member of the pipe coupling of this invention was removed from the female coupling member, and is sectional drawing in the II line | wire of FIG. 図１の雌型継手部材の前方正面図である。FIG. 2 is a front elevation view of the female joint member of FIG. 1. 図１のIII−III線における断面図であり、係合子の配置位置を示す図である。It is sectional drawing in the III-III line of FIG. 1, and is a figure which shows the arrangement position of an engaging element. 図１のIV−IV線における断面図であり、施錠子の配置位置を示す図である。It is sectional drawing in the IV-IV line | wire of FIG. 1, and is a figure which shows the arrangement position of a locking element. 雄型継手部材と雌型継手部材とを連結する際の動作を示す第１の図である。It is a 1st figure which shows the operation | movement at the time of connecting a male type | mold joint member and a female type | mold joint member. 雄型継手部材と雌型継手部材とを連結する際の動作を示す第２の図である。It is a 2nd figure which shows the operation | movement at the time of connecting a male type | mold joint member and a female type | mold joint member. 雄型継手部材と雌型継手部材とを連結する際の動作を示す第３の図である。It is a 3rd figure which shows the operation | movement at the time of connecting a male type | mold joint member and a female type | mold joint member. 雌型継手部材と雄型継手部材とが連結された状態を示す図である。It is a figure which shows the state with which the female coupling member and the male coupling member were connected. 雌型継手部材と雄型継手部材とを取り外す際の動作を示す第１の図である。It is a 1st figure which shows the operation | movement at the time of removing a female type | mold joint member and a male type | mold joint member. 雌型継手部材と雄型継手部材とを取り外す際の動作を示す第２の図である。It is a 2nd figure which shows the operation | movement at the time of removing a female coupling member and a male coupling member.

本発明の実施形態に係る管継手１は、図１に示すように雄型継手部材１０と雌型継手部材２０とからなり、雄型継手部材１０を雌型継手部材２０内に挿入すると雌型継手部材２０の雌側スライドバルブ２６に保持された施錠子４０が雄型継手部材１０の施錠凹部１４−４に係合し（図７）、さらに雄型継手部材１０を挿入して雌側スライドバルブ２６を開放位置にまで変位させると雌側スライドバルブ２６が係合子３６によって保持されて雄型継手部材１０と雌型継手部材２０との連結が完了し（図８）、このように連結した状態からスリーブ２８を引いて（図９）雄型継手部材１０を引き抜くと雌側スライドバルブ２６が雄型継手部材１０とともに閉止位置にまで戻り（図１０）、雄型継手部材１０が雌型継手部材２０から取り外された状態（図１）となるようにされた管継手１である。   As shown in FIG. 1, the pipe joint 1 according to the embodiment of the present invention includes a male joint member 10 and a female joint member 20. When the male joint member 10 is inserted into the female joint member 20, the female joint member 10 is formed. The lock 40 held by the female slide valve 26 of the joint member 20 engages with the locking recess 14-4 of the male joint member 10 (FIG. 7), and the male joint member 10 is further inserted to slide the female side. When the valve 26 is displaced to the open position, the female slide valve 26 is held by the engagement element 36, and the connection between the male joint member 10 and the female joint member 20 is completed (FIG. 8). When the sleeve 28 is pulled from the state (FIG. 9) and the male joint member 10 is pulled out, the female slide valve 26 returns to the closed position together with the male joint member 10 (FIG. 10), and the male joint member 10 becomes the female joint. Removed from member 20 A tube fitting 1 which is to be (Fig. 1).

雄型継手部材１０は、図１に示すように、前端開口１２−１から後端開口１２−２にまで延びる雄側の流体通路１２を有する筒状の雄型継手本体１４と、流体通路１２内において長手軸線Ｌの方向で摺動可能に配置された雄側スライドバルブ１６と、この雄側スライドバルブ１６を閉止位置に向かって前方（図で見て左側）に付勢するスプリング１７と、を備えている。雄側スライドバルブ１６の外周面１６−１にはＯリング１８が取付けられており、雄型継手本体１４の内周面１４−１と密封係合するようになっている。雄型継手本体１４の前端部１４−２には、その外周面１４−３上に環状の施錠凹部１４−４が形成され、この施錠凹部１４−４に後述する雌型継手部材２０の施錠子４０が係合するようになっている。   As shown in FIG. 1, the male joint member 10 includes a cylindrical male joint body 14 having a male fluid passage 12 extending from the front end opening 12-1 to the rear end opening 12-2, and the fluid passage 12. A male slide valve 16 slidably disposed in the direction of the longitudinal axis L, and a spring 17 that urges the male slide valve 16 forward (to the left in the drawing) toward the closed position, It has. An O-ring 18 is attached to the outer peripheral surface 16-1 of the male side slide valve 16, and is hermetically engaged with the inner peripheral surface 14-1 of the male joint body 14. An annular locking recess 14-4 is formed on the outer peripheral surface 14-3 of the front end portion 14-2 of the male joint main body 14, and a lock for a female joint member 20 to be described later is formed in the locking recess 14-4. 40 is engaged.

雌型継手部材２０は、前端開口２２−１から後端開口２２−２にまで延びる雌側の流体通路２２を有する筒状の雌型継手本体２４と、流体通路２２内において長手軸線Ｌの方向で摺動可能に配置された雌側スライドバルブ２６と、雌型継手本体２４の外周面２４−１上において長手軸線Ｌの方向に摺動可能に配置されたスリーブ２８と、を備えている。雌型継手部材２０は、さらに、流体通路２２内に配置され雌側スライドバルブ２６を閉止位置に向かって前方（図で見て右側）に付勢するスプリング３０と、流体通路２２内に配置されたステム３２とを備えている。   The female joint member 20 includes a cylindrical female joint body 24 having a female fluid passage 22 extending from the front end opening 22-1 to the rear end opening 22-2, and the direction of the longitudinal axis L in the fluid passage 22. And a sleeve 28 arranged to be slidable in the direction of the longitudinal axis L on the outer peripheral surface 24-1 of the female joint main body 24. The female joint member 20 is further disposed in the fluid passage 22 and a spring 30 that urges the female slide valve 26 forward (right side in the drawing) toward the closed position. Stem 32.

雌型継手本体２４には、その外周面２４−１から内周面２４−２に貫通する係合子保持孔３４が形成されており、この係合子保持孔３４内には係合子３６が保持されている。係合子３６は、係合子保持孔３４内において、雌型継手本体２４の内周面２４−２から突出し雌側スライドバルブ２６の先端係合面２６−１に係合して雌側スライドバルブ２６が閉止位置に向かって変位しないようにする係合位置（図９）と、係合位置から径方向外側に変位して雌側スライドバルブ２６の先端係合面２６−１との係合が解除される非係合位置（図１）との間で変位可能となっている。係合子保持孔３４および係合子３６は、図３に示すように、図で見て水平方向で互いに対向する位置に配置されている。雌側スライドバルブ２６には、その外周面２６−２から内周面２６−３に貫通する施錠子保持孔３８が形成されており、この施錠子保持孔３８内には施錠子４０が保持されている。施錠子４０は、施錠子保持孔３８内において、雌側スライドバルブ２６の内周面２６−３から突出し雄型継手部材１０の施錠凹部１４−４と係合して雌側スライドバルブ２６と雄型継手部材１０とを長手軸線Ｌの方向で相対的に変位しないようにする施錠位置（図７）と、施錠位置から径方向外側に変位して雄型継手部材１０の施錠凹部１４−４との係合を解除する非施錠位置（図６）との間で変位可能となっている。施錠子保持孔３８および施錠子４０は、図４に示すように、図で見て垂直方向で互いに対向する位置に配置されている。図３及び図４から分かるように、係合子３６と施錠子４０とは、雌型継手本体２４の周方向において互いに９０度ずれた位置に配置されている。なお、係合子３６と施錠子４０の数及び配置は、互いに干渉して雌側スライドバルブ２６の閉止位置と開放位置との間での変位を妨げない範囲内において適宜変更しても良い。雌型継手本体２４にはさらに施錠子収容孔４２が形成されており、この施錠子収容孔４２に非施錠位置に変位した施錠子４０が収容されるようになっている。図４に示すように、雌型継手本体２４の内周面２４−２には長手軸線Ｌの方向に延びる凸部４４が形成されており、雌側スライドバルブ２６の外周面２６−２には長手軸線Ｌの方向に延びる凹部４６が形成されている。雌型継手本体２４と雌側スライドバルブ２６とは、これら凸部４４と凹部４６とが係合することにより、長手軸線Ｌの方向では相対的に変位可能であるが、長手軸線Ｌの周りで互いに回転しないようにされている。このように互いに回転不可能とすることにより、施錠子４０と係合子３６との周方向での位置関係が変わらないようにしている。   The female joint main body 24 is formed with an engaging member holding hole 34 penetrating from the outer peripheral surface 24-1 to the inner peripheral surface 24-2, and the engaging member 36 is held in the engaging member holding hole 34. ing. The engagement element 36 protrudes from the inner peripheral surface 24-2 of the female joint body 24 in the engagement element holding hole 34 and engages with the distal end engagement surface 26-1 of the female slide valve 26 to engage the female slide valve 26. Is disengaged from the engagement position (FIG. 9) and radially outward from the engagement position, and the engagement with the tip engagement surface 26-1 of the female slide valve 26 is released. It is possible to displace between the disengaged position (FIG. 1). As shown in FIG. 3, the engaging element holding hole 34 and the engaging element 36 are arranged at positions facing each other in the horizontal direction as viewed in the figure. The female slide valve 26 is formed with a locker holding hole 38 penetrating from the outer peripheral surface 26-2 to the inner peripheral surface 26-3, and the locker 40 is held in the locker holding hole 38. ing. The locker 40 protrudes from the inner peripheral surface 26-3 of the female slide valve 26 in the locker holding hole 38 and engages with the lock recess 14-4 of the male joint member 10 to engage the female slide valve 26 and the male. A locking position (FIG. 7) that prevents the mold joint member 10 from being relatively displaced in the direction of the longitudinal axis L, and a locking recess 14-4 of the male joint member 10 that is displaced radially outward from the locking position. It can be displaced with respect to the unlocked position (FIG. 6) for releasing the engagement. As shown in FIG. 4, the locker holding hole 38 and the locker 40 are arranged at positions facing each other in the vertical direction as viewed in the figure. As can be seen from FIGS. 3 and 4, the engaging element 36 and the locking element 40 are disposed at positions shifted from each other by 90 degrees in the circumferential direction of the female joint body 24. Note that the number and arrangement of the engaging elements 36 and the locking elements 40 may be appropriately changed within a range that does not interfere with each other and prevent displacement between the closing position and the opening position of the female slide valve 26. The female joint body 24 is further formed with a lock receiving hole 42, and the lock 40 displaced to the unlocked position is received in the lock receiving hole 42. As shown in FIG. 4, a convex portion 44 extending in the direction of the longitudinal axis L is formed on the inner peripheral surface 24-2 of the female joint body 24, and the outer peripheral surface 26-2 of the female-side slide valve 26 is formed on the outer peripheral surface 26-2. A recess 46 extending in the direction of the longitudinal axis L is formed. The female joint body 24 and the female slide valve 26 are relatively displaceable in the direction of the longitudinal axis L by the engagement of the convex portion 44 and the concave portion 46, but around the longitudinal axis L. It is made not to rotate mutually. Thus, by making it mutually non-rotatable, the positional relationship in the circumferential direction of the locking element 40 and the engaging element 36 is kept unchanged.

ステム３２は、雌型継手本体２４に固定されている基部３２−１と、基部３２−１から長手軸線Ｌに沿って前方に延在する軸部３２−２と、軸部３２−２の先端の拡径部３２−３とからなり、拡径部３２−３の外周面３２−４上にはＯリング４８が取付けられている。雌型継手本体２４は、前方部材２４ａと後方部材２４ｂとからなっており、ステム３２の基部３２−１は前方部材２４ａと後方部材２４ｂとによって挟まれることによりに雌型継手部材２０に固定されている。   The stem 32 includes a base portion 32-1 fixed to the female joint body 24, a shaft portion 32-2 extending forward from the base portion 32-1 along the longitudinal axis L, and a tip of the shaft portion 32-2. The O-ring 48 is attached on the outer peripheral surface 32-4 of the enlarged diameter portion 32-3. The female joint body 24 includes a front member 24a and a rear member 24b, and the base portion 32-1 of the stem 32 is fixed to the female joint member 20 by being sandwiched between the front member 24a and the rear member 24b. ing.

雌側スライドバルブ２６は、流体通路２２内において、閉止位置（図１）と開放位置（図８）との間で長手軸線Ｌの方向で変位可能に配置されている。雌側スライドバルブ２６の外周面２６−２には摺動シールリング５０が取付けられており、この摺動シールリング５０によって雌側スライドバルブ２６の外周面２６−２と雌型継手本体２４の内周面２４−２とが密封係合している。雌側スライドバルブ２６が図１の閉止位置にあるときには、径方向内側に突出したシール部２６−４がステム３２の拡径部３２−３とＯリング４８を介して密封係合して流体通路２２が閉止された状態となり、図８の開放位置にあるときには、シール部２６−４とステム３２の拡径部３２−３との密封係合が解除されて流体通路２２が開放された状態となる。雌側スライドバルブ２６が閉止位置と開放位置との間で変位するときに、雌側スライドバルブ２６に保持されている施錠子４０は長手軸線Ｌの方向で係合子３６を越えて変位する。すなわち、雌側スライドバルブ２６が閉止位置にあるときには図１に示すように施錠子４０は係合子３６の前方に位置するが、雌側スライドバルブ２６が閉止位置にあるときには図８に示すように施錠子４０は係合子３６の後方に位置するようになる。上述のように係合子３６と施錠子４０とは周方向で９０度ずれた位置に配置されているので、施錠子４０が係合子３６を長手軸線Ｌの方向で越えていくときにも、係合子３６と施錠子４０とが互いに干渉することはない。雌側スライドバルブ２６にはさらに、その内周面２６−３に当接シールリング５２が取付けられており、この当接シールリング５２によって雌型継手本体２４に挿入された雄型継手部材１０の前端面１９と雌側スライドバルブ２６とを密封係合できるようになっている。   The female slide valve 26 is disposed in the fluid passage 22 so as to be displaceable in the direction of the longitudinal axis L between a closed position (FIG. 1) and an open position (FIG. 8). A sliding seal ring 50 is attached to the outer peripheral surface 26-2 of the female side slide valve 26, and the inner surface of the outer peripheral surface 26-2 of the female side slide valve 26 and the female joint body 24 is secured by this sliding seal ring 50. The peripheral surface 24-2 is in sealing engagement. When the female slide valve 26 is in the closed position of FIG. 1, the seal portion 26-4 that protrudes radially inward is hermetically engaged with the enlarged diameter portion 3-3 of the stem 32 through the O-ring 48 and the fluid passage. 8 is in a closed state, and when in the open position of FIG. 8, the sealing engagement between the seal portion 26-4 and the enlarged diameter portion 32-3 of the stem 32 is released, and the fluid passage 22 is opened. Become. When the female slide valve 26 is displaced between the closed position and the open position, the lock 40 held by the female slide valve 26 is displaced beyond the engagement element 36 in the direction of the longitudinal axis L. That is, when the female slide valve 26 is in the closed position, the lock 40 is positioned in front of the engaging element 36 as shown in FIG. 1, but when the female slide valve 26 is in the closed position, as shown in FIG. The locker 40 is positioned behind the engaging member 36. As described above, the engaging element 36 and the locking element 40 are arranged at positions shifted by 90 degrees in the circumferential direction. Therefore, even when the locking element 40 crosses the engaging element 36 in the direction of the longitudinal axis L, The combination 36 and the lock 40 do not interfere with each other. Further, a contact seal ring 52 is attached to the inner peripheral surface 26-3 of the female slide valve 26, and the male joint member 10 inserted into the female joint body 24 by the contact seal ring 52 is provided. The front end surface 19 and the female slide valve 26 can be hermetically engaged.

図１に示すように雌側スライドバルブ２６が閉止位置にある状態で、雄型継手部材１０を雌型継手本体２４の前端開口２２−１から流体通路２２内に挿入すると、図５に示すように、施錠子４０が雄型継手部材１０の前端部１４−２によって径方向外側に押されて非施錠位置に変位する。このとき施錠子４０は雌型継手部材２０に形成された施錠子収容孔４２内に収容される。さらに雄型継手部材１０を挿入していくと、図６に示すように、雄型継手部材１０の前端面１９が雌側スライドバルブ２６の当接シールリング５２に当接すると共に、施錠凹部１４−４と施錠子４０との位置が径方向において整合する。さらに雄型継手部材１０を挿入すると、図７に示すように、雌側スライドバルブ２６は雄型継手部材１０に押されて後方に変位し、これに伴って施錠子収容孔４２に一部が収容されていた施錠子４０は、施錠子収容孔４２の傾斜係合面４２−１によって径方向内側に押されて雌側スライドバルブ２６の内周面２６−３から一部が突出した施錠位置にまで変位し、雄型継手部材１０の施錠凹部１４−４と係合する。また、施錠子４０は雌型継手本体２４の内周面２４−２にも係合して施錠位置に拘束された状態となる。さらには、ステム３２の前端面３２−５と雄側スライドバルブ１６の前端面１６−２とが接して、雄側スライドバルブ１６が雄型継手本体１４に対して相対的に後方（図で見て右側）に変位する。さらに雄型継手部材１０を挿入すると、図８に示すように、雌側スライドバルブ２６が開放位置にまで変位されて雌側の流体通路２２が開放された状態となる。また、雄側スライドバルブ１６も開放位置となって雄側の流体通路１２も開放された状態となり、両流体通路１２、２２が連通する。このとき係合子３６は、スリーブ２８によって径方向内側に押されて雌型継手本体２４の内周面２４−２から一部が突出した係合位置に変位し、雌側スライドバルブ２６の先端係合面２６−１に係合する。またスリーブ２８はスプリング５４の付勢力によって拘束位置にまで変位して係合子３６を非係合位置に拘束する。このようにして雄型継手部材１０は雌側スライドバルブ２６を介して雌型継手部材２０と連結された状態となる。   As shown in FIG. 5, when the male joint member 10 is inserted into the fluid passage 22 from the front end opening 22-1 of the female joint body 24 with the female slide valve 26 in the closed position as shown in FIG. The locking element 40 is pushed radially outward by the front end portion 14-2 of the male joint member 10 and displaced to the unlocked position. At this time, the locking element 40 is accommodated in a locking element accommodation hole 42 formed in the female joint member 20. When the male joint member 10 is further inserted, the front end surface 19 of the male joint member 10 contacts the contact seal ring 52 of the female slide valve 26 as shown in FIG. The positions of 4 and the lock 40 are aligned in the radial direction. When the male joint member 10 is further inserted, the female slide valve 26 is pushed by the male joint member 10 and displaced rearward, as shown in FIG. The locking element 40 that has been accommodated is pushed radially inward by the inclined engaging surface 42-1 of the locking element accommodation hole 42, and a part of the locking element 40 protrudes from the inner peripheral surface 26-3 of the female slide valve 26. To engage with the locking recess 14-4 of the male joint member 10. The lock 40 is also engaged with the inner peripheral surface 24-2 of the female joint main body 24 and is restrained at the lock position. Further, the front end surface 32-5 of the stem 32 and the front end surface 16-2 of the male slide valve 16 are in contact with each other, so that the male slide valve 16 is relatively rearward with respect to the male joint body 14 (see FIG. To the right). When the male joint member 10 is further inserted, the female slide valve 26 is displaced to the open position and the female fluid passage 22 is opened as shown in FIG. Further, the male slide valve 16 is also in the open position, and the male fluid passage 12 is also opened, so that the fluid passages 12 and 22 communicate with each other. At this time, the engaging element 36 is pushed radially inward by the sleeve 28 and is displaced to an engaging position in which a part protrudes from the inner peripheral surface 24-2 of the female joint main body 24. Engage with the mating surface 26-1. Further, the sleeve 28 is displaced to the restraining position by the urging force of the spring 54 and restrains the engaging element 36 to the non-engaging position. In this way, the male joint member 10 is connected to the female joint member 20 via the female slide valve 26.

図８の連結状態から雄型継手部材１０を取り外す際には、まず、図９に示すように、スリーブ２８を拘束位置から解除位置に変位させる。次に、図１０に示すように、雄型継手部材１０を雌型継手部材２０から引き抜いていく。雄型継手部材１０を引き抜いていくのに伴って、雌側スライドバルブ２６は、スプリング３０の付勢力によって閉止位置にまで雄型継手部材１０と共に変位する。このときに、例えば摺動シールリング５０が雌型継手本体２４の内周面２４−２に固着したり、雌型継手本体２４の内周面２４−２と雌側スライドバルブ２６の外周面２６−２との間に異物が挟まったりするなどしてスプリング３０の付勢力に対して摺動抵抗が大きくなり過ぎたときには、雌側スライドバルブ２６はスプリング３０の付勢力だけでは閉止位置に向かって変位できなくなる。ここで、施錠子４０は、雌側スライドバルブ２６が開放位置と閉止位置との間及び開放位置にあるとき、すなわち閉止位置以外にあるときには、雌型継手本体２４の内周面２４−２によって施錠位置に拘束されて、雄型継手部材１０の施錠凹部１４−４に係合された状態に維持されている。そのため、雌側スライドバルブ２６がスプリング３０の付勢力だけでは変位しなくなったとしても、雄型継手部材１０を雌型継手部材２０から引き抜くことにより雌側スライドバルブ２６は雄型継手部材１０に引っ張られて強制的に図１０に示す閉止位置にまで変位されることになる。図１０の状態において、施錠子４０は雌型継手本体２４の内周面２４−２によって拘束されておらず施錠子収容孔４２と径方向で整合して非施錠位置に変位可能となっているため、ここからさらに雄型継手部材１０を引き抜くと、施錠子４０は非施錠位置に変位して雄型継手部材１０の施錠凹部１４−４との係合が解除され、雄型継手部材１０は雌型継手部材２０から取り外された状態となる（図１）。   When removing the male joint member 10 from the connected state of FIG. 8, first, as shown in FIG. 9, the sleeve 28 is displaced from the restraint position to the release position. Next, as shown in FIG. 10, the male joint member 10 is pulled out from the female joint member 20. As the male joint member 10 is pulled out, the female slide valve 26 is displaced together with the male joint member 10 to the closed position by the urging force of the spring 30. At this time, for example, the sliding seal ring 50 is fixed to the inner peripheral surface 24-2 of the female joint body 24, or the inner peripheral surface 24-2 of the female joint body 24 and the outer peripheral surface 26 of the female slide valve 26. When the sliding resistance becomes too large with respect to the urging force of the spring 30 due to foreign matter being sandwiched between the spring 30 and the female slide valve 26 toward the closed position only with the urging force of the spring 30. Can not be displaced. Here, when the female side slide valve 26 is between the open position and the closed position and in the open position, that is, when the female side slide valve 26 is in a position other than the closed position, the locker 40 is moved by the inner peripheral surface 24-2 of the female joint body 24. It is restrained by the locking position and is kept engaged with the locking recess 14-4 of the male joint member 10. Therefore, even if the female slide valve 26 is not displaced only by the urging force of the spring 30, the female slide valve 26 is pulled to the male joint member 10 by pulling out the male joint member 10 from the female joint member 20. Therefore, it is forcibly displaced to the closed position shown in FIG. In the state of FIG. 10, the lock 40 is not restrained by the inner peripheral surface 24-2 of the female joint body 24 and can be displaced to the unlocked position in alignment with the lock receiving hole 42 in the radial direction. Therefore, when the male joint member 10 is further pulled out from here, the lock 40 is displaced to the non-locking position, and the engagement with the locking recess 14-4 of the male joint member 10 is released. It will be in the state removed from the female coupling member 20 (FIG. 1).

当該雌型継手部材２０においては、上述のように、雌側スライドバルブ２６が閉止位置と開放位置との間で変位されるときに、施錠子４０が長手軸線Ｌの方向で係合子３６を越えて変位するように構成されており、このような構成とすることにより、施錠子が係合子の前方側でのみ変位するように構成された従来の管継手に比べて、その全長を短くすることが可能となっている。   In the female joint member 20, as described above, when the female slide valve 26 is displaced between the closed position and the open position, the locking element 40 exceeds the engaging element 36 in the direction of the longitudinal axis L. By adopting such a configuration, the overall length of the locking element can be shortened compared to a conventional pipe joint that is configured to be displaced only on the front side of the engaging element. Is possible.

上記実施形態においては、図１等に示すように、施錠子４０が多角形断面を有する弧状の部材とされているが、球などの他の形状としてもよい。なお、施錠子４０が多角形断面となっているのは、施錠子４０が、雌型継手本体２４の内周面２４−２、施錠子保持孔３８、及び雄型継手部材１０の施錠凹部１４−４にそれぞれ面接触するようにして、各部材の摩耗を低減するとともに各部材への応力集中を緩和して部材の破損を防止するようにするためである。上記実施形態に係る管継手１は、理化学機器（特に分析機器）における薬液やガスなどの配管用として使用されることを想定してスプリングやシール部材以外の主要な部材を樹脂成形により形成しているが、このような樹脂製の管継手１は金属製のものに比べて強度が弱くなることが多いので、施錠子４０を上述のように多角形断面として耐久性を持たせることが有用となる。なお、当該管継手１は、当然に金属製としてもよい。   In the above embodiment, as shown in FIG. 1 and the like, the lock 40 is an arc-shaped member having a polygonal cross section, but may have other shapes such as a sphere. The locking element 40 has a polygonal cross section because the locking element 40 has an inner peripheral surface 24-2 of the female joint body 24, a locking element holding hole 38, and a locking recess 14 of the male coupling member 10. This is to prevent wear of the members by reducing the wear of each member and reducing the stress concentration on each member so as to make surface contact with each other. The pipe joint 1 according to the above embodiment is formed by resin molding of main members other than the spring and the seal member on the assumption that the pipe joint 1 is used for piping of chemicals and gases in physics and chemistry equipment (particularly analytical equipment). However, since such a resin pipe joint 1 is often weaker than a metal pipe joint 1, it is useful to make the locker 40 durable as a polygonal cross section as described above. Become. Note that the pipe joint 1 may naturally be made of metal.

また、上記実施形態においては、通常時は雌側スライドバルブ２６がスプリング３０によって開放位置から閉止位置に変位するようにしているが、スプリング３０を排除して、雌側スライドバルブ２６が常に雄型継手部材１０によって引っ張られることで開放位置から閉止位置に変位するようにしてもよい。   In the above-described embodiment, the female slide valve 26 is normally displaced from the open position to the closed position by the spring 30 in the normal state, but the female slide valve 26 is always a male type by removing the spring 30. It may be displaced from the open position to the closed position by being pulled by the joint member 10.

管継手１；雄型継手部材１０（雄側の）流体通路１２；前端開口１２−１；後端開口１２−２；雄型継手本体１４；内周面１４−１；前端部１４−２；外周面１４−３；施錠凹部１４−４；雄側スライドバルブ１６；外周面１６−１；前端面１６−２；スプリング１７；Ｏリング１８；前端面１９；雌型継手部材２０；（雌側の）流体通路２２；前端開口２２−１；後端開口２２−２；雌型継手本体２４；前方部材２４ａ；後方部材２４ｂ；外周面２４−１；内周面２４−２；雌側スライドバルブ２６；先端係合面２６−１；外周面２６−２；内周面２６−３；シール部２６−４；スリーブ２８；スプリング３０；ステム３２；基部３２−１；軸部３２−２；拡径部３２−３；外周面３２−４；前端面３２−５；係合子保持孔３４；係合子３６；施錠子保持孔３８；施錠子４０；施錠子収容孔４２；傾斜係合面４２−１；凸部４４；凹部４６；Ｏリング４８；摺動シールリング５０；当接シールリング５２；スプリング５４；長手軸線Ｌ； Pipe joint 1; Male joint member 10 (male side) fluid passage 12; Front end opening 12-1; Rear end opening 12-2; Male joint body 14; Inner peripheral surface 14-1; Outer peripheral surface 14-3; locking recess 14-4; male slide valve 16; outer peripheral surface 16-1; front end surface 16-2; spring 17; O-ring 18; front end surface 19; Fluid passage 22; front end opening 22-1, rear end opening 22-2; female joint body 24; front member 24a; rear member 24b; outer peripheral surface 24-1; inner peripheral surface 24-2; 26; tip engaging surface 26-1; outer peripheral surface 26-2; inner peripheral surface 26-3; seal portion 26-4; sleeve 28; spring 30; stem 32; base 32-1; Diameter portion 32-3; outer peripheral surface 32-4; front end surface 32-5; engagement element holding hole 34; engagement element 3 Locker holding hole 38; Locker 40; Locker receiving hole 42; Inclined engagement surface 42-1; Convex portion 44; Concave portion 46; O-ring 48; Sliding seal ring 50; Longitudinal axis L;

Claims (7)

施錠凹部を有する雄型継手部材を連結する雌型継手部材であって、
流体通路を有する筒状の雌型継手本体と、
該雌型継手本体の該流体通路内に配置されたスライドバルブであって、該流体通路を閉止する閉止位置と該流体通路を開放する開放位置との間で該流体通路の長手軸線の方向で変位可能とされた筒状のスライドバルブと、
該スライドバルブに保持された施錠子であって、該スライドバルブの内周面から突出し雄型継手部材の施錠凹部と係合して該スライドバルブと該雄型継手部材とを該長手軸線の方向で相対的に変位しないようにする施錠位置と、該施錠位置から該スライドバルブの径方向外側に変位して該施錠凹部との係合を解除する非施錠位置との間で変位可能とされた施錠子と、
該雌型継手本体に保持された係合子であって、該雌型継手本体の内周面から突出し該スライドバルブに係合して該スライドバルブが該閉止位置に向かって変位しないようにする係合位置と、該係合位置から径方向外側に変位して該スライドバルブとの該係合を解除して該スライドバルブが該開放位置に変位することを許容する非係合位置との間で変位可能とされた係合子と、
該雌型継手本体の外周面上において該長手軸線の方向で摺動可能に配置され、該係合子が該非係合位置に変位することを許容する解除位置と、該係合子を該係合位置に拘束する拘束位置との間で変位可能とされたスリーブと、
を備え、
該スライドバルブが該閉止位置にある状態で該雄型継手部材を該雌型継手本体の該流体通路内に挿入したときに、該施錠子が、該施錠位置に変位して該雄型継手部材の該施錠凹部に係合されるとともに該スライドバルブが該雄型継手部材によって押されて該開放位置に向かって変位され、
該スライドバルブが該開放位置と該閉止位置との間及び該開放位置にあるときには、該施錠子は、該雌型継手本体の内周面に係合して該施錠位置に拘束されて、該施錠凹部に係合した状態に維持され、
該スライドバルブが該開放位置に変位されたときに、該係合子が該係合位置に変位するとともに該スリーブが該拘束位置に変位して、該雄型継手部材が該スライドバルブを介して該雌型継手本体に連結され、
該スリーブを該拘束位置から該解除位置に変位させて該雄型継手部材を該流体通路から引き抜くときに、該スライドバルブが該雄型継手部材とともに該開放位置から該閉止位置にまで変位されるようにされており、
該スライドバルブが該閉止位置と該開放位置との間で変位されたときに、該施錠子が該長手軸線の方向で該係合子を越えて変位するようにされた、雌型継手部材。 A female joint member for connecting a male joint member having a locking recess,
A cylindrical female joint body having a fluid passage;
A slide valve disposed in the fluid passage of the female joint body between a closed position for closing the fluid passage and an open position for opening the fluid passage in the direction of the longitudinal axis of the fluid passage; A cylindrical slide valve that can be displaced;
A locking element held by the slide valve, which protrudes from the inner peripheral surface of the slide valve and engages with a locking recess of the male joint member, thereby connecting the slide valve and the male joint member in the direction of the longitudinal axis. It is possible to displace between a locked position that prevents relative displacement at the position and a non-locked position that displaces the slide valve radially outward from the locked position and releases the engagement with the locked recess. Lockers,
An engagement element held by the female joint body, which protrudes from the inner peripheral surface of the female joint body and engages with the slide valve so that the slide valve is not displaced toward the closed position. Between the engagement position and the non-engagement position that displaces radially outward from the engagement position to release the engagement with the slide valve and allow the slide valve to move to the open position. An engagement element that is displaceable;
A release position that is slidably disposed in the direction of the longitudinal axis on the outer peripheral surface of the female joint body, and allows the engagement element to be displaced to the non-engagement position; and A sleeve that is displaceable between a restraining position restrained by
With
When the male joint member is inserted into the fluid passage of the female joint body in a state where the slide valve is in the closed position, the lock is displaced to the lock position and the male joint member And the slide valve is pushed by the male joint member and displaced toward the open position.
When the slide valve is between the open position and the closed position and in the open position, the lock is engaged with the inner peripheral surface of the female joint body and is restrained to the lock position. Maintained in engagement with the locking recess,
When the slide valve is displaced to the open position, the engagement element is displaced to the engagement position and the sleeve is displaced to the restraining position, and the male joint member is moved through the slide valve. Connected to the female fitting body,
When the sleeve is displaced from the restraining position to the release position and the male joint member is pulled out from the fluid passage, the slide valve is displaced from the open position to the closed position together with the male joint member. And
A female joint member wherein the locking element is displaced beyond the engagement element in the direction of the longitudinal axis when the slide valve is displaced between the closed position and the open position. 該施錠子と該係合子とが、該長手軸線の周りで互いに回転しないようにされている、請求項１に記載の雌型継手部材   The female joint member according to claim 1, wherein the locking element and the engaging element are prevented from rotating with respect to each other about the longitudinal axis. 該雌型継手本体と該スライドバルブとが、該長手軸線の周りで互いに回転しないようにされている、請求項２に記載の雌型継手部材。   The female joint member according to claim 2, wherein the female joint body and the slide valve are prevented from rotating with respect to each other about the longitudinal axis. 該係合子が、該係合位置において該スライドバルブの先端係合面と係合するようにされている、請求項１乃至３の何れか一項に記載の雌型継手部材。   4. The female joint member according to claim 1, wherein the engagement element is configured to engage with a tip engagement surface of the slide valve at the engagement position. 5. 該雌型継手本体と該スライドバルブとの間に配置され、該スライドバルブを該閉止位置に向かって付勢するスプリングをさらに備える、請求項１乃至４の何れか一項に記載の雌型継手部材。   5. The female joint according to claim 1, further comprising a spring disposed between the female joint main body and the slide valve and biasing the slide valve toward the closed position. Element. 該雌型継手本体の該流体通路内に配置されたステムであって、該雌型継手本体に固定された基部と、該基部から該長手軸線の方向に延びる軸部と、該軸部の先端に配置された拡径部と、を有するステムをさらに備え、
該スライドバルブが該閉止位置にあるときには、該スライドバルブと該ステムの拡径部とが密封係合して該流体通路を閉止し、該スライドバルブが該開放位置にあるときには、該スライドバルブと該ステムの該拡径部との係合が解除されて該流体通路を開放するようにされた、請求項１乃至５の何れか一項に記載の雌型継手部材。 A stem disposed in the fluid passage of the female joint body, a base fixed to the female joint body, a shaft extending from the base in the direction of the longitudinal axis, and a tip of the shaft A stem having a diameter-expanded portion disposed in
When the slide valve is in the closed position, the slide valve and the enlarged diameter portion of the stem are sealingly engaged to close the fluid passage, and when the slide valve is in the open position, The female joint member according to any one of claims 1 to 5, wherein the fluid passage is opened by releasing the engagement of the stem with the enlarged-diameter portion. 施錠凹部を有する雄型継手部材と、
該雄型継手部材と連結される請求項１乃至６の何れか一項に記載の雌型継手部材と、
を備える管継手。 A male joint member having a locking recess;
The female joint member according to any one of claims 1 to 6, which is connected to the male joint member,
A pipe fitting comprising:
JP2015041224A 2015-03-03 2015-03-03 Pipe fitting Active JP6193282B2 (en)

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JP7228489B2 (en) * 2019-08-09 2023-02-24 水戸工業株式会社 Connecting device for fluid passage pipe
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US3613726A (en) * 1965-12-02 1971-10-19 Purolator Products Inc Balanced pressure coupling
US4924909A (en) * 1989-03-20 1990-05-15 Snap-Tite, Inc. Semi-balanced staggered locking coupling
US5445358A (en) * 1994-12-16 1995-08-29 Parker-Hannifin Corporation Exhaust type quick action coupler
US6557824B1 (en) * 2000-10-20 2003-05-06 Eaton Aeroquip Releasable coupling assembly
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