JP5579147B2

JP5579147B2 - Fitting member for pipe fitting

Info

Publication number: JP5579147B2
Application number: JP2011218113A
Authority: JP
Inventors: 浩之北川
Original assignee: Nitto Kohki Co Ltd
Current assignee: Nitto Kohki Co Ltd
Priority date: 2011-09-30
Filing date: 2011-09-30
Publication date: 2014-08-27
Anticipated expiration: 2031-09-30
Also published as: JP2013076451A

Description

本発明は、管継手における継手部材に係り、特に、筒状の継手本体の半径方向中央部に内側弁座を設け、該内側弁座に対応する継手本体の内周面の位置に外側弁座を設けると共に、同継手本体内に筒状又は環状の弁を設け、該弁が内側及び外側弁座部に係合して当該継手本体の流路を閉じる閉止位置と、同弁座から離れて流路を開放する開放位置との間で前後方向に変位可能とした継手部材に関する。 The present invention relates to a joint member in a pipe joint, and in particular, an inner valve seat is provided in a central portion in the radial direction of a tubular joint body, and an outer valve seat is provided at a position of an inner peripheral surface of the joint body corresponding to the inner valve seat. In addition, a cylindrical or annular valve is provided in the joint body, and the valve engages with the inner and outer valve seats to close the flow path of the joint body, and away from the valve seat. The present invention relates to a joint member that can be displaced in the front-rear direction between an open position where a flow path is opened.

管継手の雄型及び雌型の継手部材は、通常、筒状の継手本体の内部に流路の開閉を行うための弁手段が設けられている。弁手段には、種々の形式があるが、筒状の弁を継手本体の内周面と摺動可能とするとともに、該筒状本体の半径方向中央位置に弁座を設定し、弁が、流路閉止位置にあるときには、該弁座に密封係合して流路を閉止するようにしたものがある。この形式の継手部材においては、Oリングなどのシール部材が、弁の外周面と筒状本体の内周面との間に設定され、雄型及び雌型部材の間の隙間から流体が漏れるのを防ぐようにする（例えば、特許文献１参照）。また、シール部材を用いる代わりに、弁自体をゴムなどで形成してシール部材を兼ねるようにしたものもある（例えば、特許文献２参照）。 The male and female joint members of the pipe joint are usually provided with valve means for opening and closing the flow path inside the tubular joint body. There are various types of valve means, and the cylindrical valve is slidable with the inner peripheral surface of the joint body, and a valve seat is set at the radial center position of the cylindrical body. When the flow path is closed, there is one in which the flow path is closed by sealingly engaging the valve seat. In this type of joint member, a seal member such as an O-ring is set between the outer peripheral surface of the valve and the inner peripheral surface of the cylindrical body, and fluid leaks from the gap between the male and female members. (For example, refer to Patent Document 1). Further, instead of using a seal member, there is a valve that is formed of rubber or the like so as to serve as a seal member (see, for example, Patent Document 2).

しかし、そのようなシール部材は、弁の外周面に設定されたシール部材が継手本体の内周面と常に接触しているために、弁が閉止位置や開放位置に弁が閉止位置と開放位置との間で動くときに、弁の外周面に設定されたシール部材が継手本体の内周面と摺動するために磨耗しやすく、また、長期間にわたり閉止位置や開放位置に保持されるとシール部材が継手本体の内周面に固着してしまう場合も生じる。このようなシール部材の摩耗や固着を解消するため、筒状の継手本体の内周面に流体通路を囲むように突設された環状の外側弁座を形成し、弁が流路閉止位置にあるときは、該弁が外側及び内側弁座部に密封係合するようにし、弁が閉止位置と開放位置との間で動くときには、外側のシール部材が継手本体の内周面と摺動しないようにしたものが開発されている（例えば、特許文献３）。この継手部材では、上述したような外側シール部材の摩耗を無くすことはできるが、弁の外側と内側に設けたシール部材をそれぞれ外側弁座及び内側弁座に同時に密封係合させる必要があり、そのため、製作が困難となる。 However, since such a sealing member is always in contact with the inner peripheral surface of the joint body, the valve is set at the closed position or the open position. If the seal member set on the outer peripheral surface of the valve slides with the inner peripheral surface of the joint body when it is moved between the In some cases, the seal member may adhere to the inner peripheral surface of the joint body. In order to eliminate such wear and sticking of the seal member, an annular outer valve seat protruding so as to surround the fluid passage is formed on the inner peripheral surface of the cylindrical joint body, and the valve is in the flow path closing position. In some cases, the valve is in sealing engagement with the outer and inner valve seats, and when the valve moves between a closed position and an open position, the outer seal member does not slide with the inner peripheral surface of the fitting body. What has been developed has been developed (for example, Patent Document 3). In this joint member, it is possible to eliminate the wear of the outer seal member as described above, but it is necessary to seal the seal member provided on the outer side and the inner side of the valve simultaneously with the outer valve seat and the inner valve seat, This makes it difficult to manufacture.

本出願人は、このような点を解消する弁手段を備えた継手部材に関する特許出願を行った（引用文献４）。すなわち、この継手部材では、筒状の継手本体に上述のような内側及び外側の環状の弁座を設けると共に、これら弁座に対する弁の半径方向外側面に環状のシール部材を設けると共に、半径方向内側面に第１の部分と該第１の部分から延びる第２の部分とからなる断面L字状のシール部材を、第１の部分を上記半径方向内側面に接着剤等により固着し、第２の部分を半径方向内側に延びるように設け、弁が閉止位置に戻るときに、内側のシール部材の第２の部分が内側弁座に密封係合し、その後で、外側のシール部材が外側弁座に係合するために弁がさらに進むときに該第２の部分が密封係合を維持しながら湾曲して弁の進行を妨げないようにし、外側のシール部材が外側弁座に適切に密封係合できるようにしている。この継手部材の弁は、その製作公差に余り左右されずに、内側及び外側弁座に対する密封係合が適正にできるという点で優れているが、内側シールを接着剤により固着しなければならないために、当該継手部材が扱う流体によっては接着剤が溶けてシール材が外れてシール不良を生じたり、流体に悪影響を与えてしまったりするという問題がある。
米国特許第４，９３６，３４５号実用新案登録２５５９２３３号特許第２６９４２９９号特許３９０９３３９号 The present applicant filed a patent application relating to a joint member provided with valve means for solving such a point (Cited document 4). That is, in this joint member, the cylindrical joint body is provided with the inner and outer annular valve seats as described above, and the annular seal member is provided on the radially outer surface of the valve with respect to these valve seats, and the radial direction A seal member having an L-shaped cross section comprising a first portion and a second portion extending from the first portion is fixed to the inner surface, and the first portion is fixed to the radially inner surface with an adhesive or the like. The second part of the inner seal member sealingly engages the inner valve seat when the valve returns to the closed position, after which the outer seal member is As the valve advances further to engage the valve seat, the second portion maintains a sealing engagement so that the second portion is curved and does not impede the progression of the valve, and the outer seal member is properly attached to the outer valve seat. The sealing engagement is possible. The valve of this joint member is excellent in that the sealing engagement with the inner and outer valve seats can be properly performed without being greatly affected by the manufacturing tolerance, but the inner seal must be fixed with an adhesive. In addition, depending on the fluid handled by the joint member, there is a problem in that the adhesive melts and the sealing material is removed to cause a sealing failure or adversely affect the fluid.
U.S. Pat. No. 4,936,345 Utility model registration No. 2559233 Japanese Patent No. 2694299 Japanese Patent No. 3909339

本発明は、以上のような点に鑑み、製作公差に左右されずに内側及び外側弁座との密封係合を確実に行うことができる弁手段を備えた継手部材を提供することを目的としている。 In view of the above points, the present invention has an object to provide a joint member provided with valve means that can reliably perform sealing engagement with the inner and outer valve seats without being influenced by manufacturing tolerances. Yes.

すなわち、本発明は、
前端から後方に延びる雄型部材受入部、及び、該雄型部材受入部よりも後方位置で、該雄型部材受入部に受け入れた雄型継手部材の流体通路に連通される流体通路部を備える筒状の継手本体と、
該継手本体内に設けられて、該流体通路部の開閉を行なう弁手段と
を有し、
該弁手段が、
該継手本体の内周面に該雄型部材受入部を囲むように半径方向内側に突設された環状の外側弁座部と、
該継手本体内部で、該外側弁座部との間に環状の弁開口を形成する環状の内側弁座部と、
該継手本体の内部に該継手本体の前後方向で変位可能に設けられ、該外側及び内側弁座部に係合して該弁開口を閉じる閉止位置と、該外側及び内側弁座部から離れて該弁開口を開放する開放位置との間で変位可能とされた環状の弁であって、閉止位置にあるときに、該外側弁座部に押圧されて該外側弁座部と当該弁との間を密封する外側環状シール部材と、該内側弁座部に押圧されて該内側弁座部と当該弁との間を密封する内側環状シール部材とを備える弁と、
該弁を該閉止位置に向けて付勢するバネ手段と、
を備え、
該弁が、該外側環状シール部材を支持する外側弁部材と、該内側環状シール部材を支持する内側弁部材とを備え、該外側弁部材及び内側弁部材は、該雄型部材受入部に受け入れた雄型継手部材により後方に変位され、また、該雄型継手部材が該雄型部材受入部から引き出されることにより該バネ手段により前方で変位されるようにされており、且つ、該前後方向で相対的に変位可能で、少なくとも当該弁が閉止位置にあるときは、相互に密封係合されるようになされており、
該バネ手段は、該外側弁部材を前方に付勢する外側バネと、前記内側弁部材を前方に付勢する内側バネとを備え、該弁が該閉止位置にあるときは、該外側及び内側バネが、それぞれ、該外側及び内側環状シール部材に押圧するようにした、
ことを特徴とする雌型継手部材を提供する。 That is, the present invention
A male member receiving portion extending rearward from the front end, and a fluid passage portion communicating with the fluid passage of the male joint member received in the male member receiving portion at a position rearward of the male member receiving portion. A tubular joint body;
Valve means provided in the joint body for opening and closing the fluid passage portion;
The valve means
An annular outer valve seat projecting radially inward so as to surround the male member receiving portion on the inner peripheral surface of the joint body;
An annular inner valve seat that forms an annular valve opening with the outer valve seat within the joint body;
A closed position provided inside the joint main body so as to be displaceable in the front-rear direction of the joint main body, engaged with the outer and inner valve seats to close the valve opening, and separated from the outer and inner valve seats An annular valve that is displaceable between an open position that opens the valve opening, and when the valve is in the closed position, the annular valve is pressed by the outer valve seat portion to cause a contact between the outer valve seat portion and the valve. A valve comprising: an outer annular seal member that seals between; and an inner annular seal member that is pressed by the inner valve seat portion and seals between the inner valve seat portion and the valve;
Spring means for biasing the valve toward the closed position;
With
The valve includes an outer valve member that supports the outer annular seal member, and an inner valve member that supports the inner annular seal member, and the outer valve member and the inner valve member are received in the male member receiving portion. The male joint member is displaced rearward by the male joint member, and the male joint member is displaced forward by the spring means by being pulled out from the male member receiving portion, and the front-rear direction At least when the valve is in the closed position, so that they are in sealing engagement with each other,
The spring means includes an outer spring that urges the outer valve member forward and an inner spring that urges the inner valve member forward. When the valve is in the closed position, the outer and inner springs are provided. Springs pressed against the outer and inner annular seal members, respectively.
A female joint member is provided.

すなわち、この雌型継手部材においては、弁手段が該閉止位置になるときに、例えば、内側環状シール部材が外側環状シール部材よりも先に対応する弁座、すなわち内側弁座部と密封係合して内側弁部材が停止したとしても、外側環状シール部材を支持している外側弁部材は、内側弁部材が停止することとは関係なく前進して、外側弁部材が対応する弁座、すなわち外側弁座部に密封係合することができるようにしている。これは、外側環状シール部材が内側環状シール部材よりも先に対応する外側弁座部に密封係合した場合も同様である。この雌型継手部材においては、特許文献４に開示された如きものと異なり、環状シール部材を外側弁部材や内側弁部材に接着する必要が無く、従って、上述した問題点を解消することができる。 That is, in this female joint member, when the valve means is in the closed position, for example, the inner annular seal member is in sealing engagement with the corresponding valve seat, that is, the inner valve seat portion before the outer annular seal member. Even if the inner valve member stops, the outer valve member supporting the outer annular seal member moves forward regardless of the inner valve member stopping, and the outer valve member corresponds to the corresponding valve seat, i.e. The outer valve seat portion can be hermetically engaged. The same applies to the case where the outer annular seal member is sealingly engaged with the corresponding outer valve seat portion earlier than the inner annular seal member. In this female joint member, unlike the one disclosed in Patent Document 4, it is not necessary to bond the annular seal member to the outer valve member or the inner valve member, and thus the above-mentioned problems can be solved. .

具体的には、
該内側弁部材は、該継手本体の前後方向に延びる長手軸線に平行な環状外周面を有し、
該外側弁部材は、該内側弁部材の該環状外周面上で該前後方向に変位可能で、該前後方向で相互に離された外側前方弁部材及び外側後方弁部材を備え、外側前方弁部材が外側後方弁部材よりも前方位置とされ、該外側バネが該外側後方弁部材に係合されるようになされており、該外側環状シール部材が該外側前方弁部材及び外側後方弁部材の間に挟着され、該外側環状シール部材が該外側弁座部及び内側弁部材の該環状外周面と密封係合するように設定される。 In particular,
The inner valve member has an annular outer peripheral surface parallel to a longitudinal axis extending in the front-rear direction of the joint body,
The outer valve member includes an outer front valve member and an outer rear valve member that are displaceable in the front-rear direction on the annular outer peripheral surface of the inner valve member, and are separated from each other in the front-rear direction. Is positioned forward of the outer rear valve member, and the outer spring is engaged with the outer rear valve member, and the outer annular seal member is disposed between the outer front valve member and the outer rear valve member. The outer annular seal member is set so as to sealingly engage the outer peripheral surface of the outer valve seat portion and the inner valve member.

また、上記の具体例とは逆に、
該外側弁部材が、該筒状弁体の前後方向に延びる長手軸線に平行な環状内周面を有し、
該内側弁部材が、該外側弁部材の該環状内周面に接して該前後方向に変位可能で、該前後方向で相互に離された内側前方弁部材及び内側後方弁部材を備え、内側前方弁部材が内側後方弁部材よりも前方位置とされ、内側バネが内側後方弁部材に係合されるようになされており、該内側環状シール部材が該内側前方弁部材及び該内側後方弁部材の間に挟着され、該内側環状シール部材が該内側弁座部及び該外側弁部材の該環状内周面に密封係合するように設定することもできる。 In contrast to the above specific example,
The outer valve member has an annular inner peripheral surface parallel to a longitudinal axis extending in the front-rear direction of the tubular valve body;
The inner valve member includes an inner front valve member and an inner rear valve member, which are displaceable in the front-rear direction in contact with the annular inner peripheral surface of the outer valve member, and are separated from each other in the front-rear direction. The valve member is positioned forward of the inner rear valve member, the inner spring is engaged with the inner rear valve member, and the inner annular seal member is connected to the inner front valve member and the inner rear valve member. The inner annular seal member may be sandwiched between the inner valve seat portion and the annular inner peripheral surface of the outer valve member.

これらの具体例では、２つの部材から構成される外側弁部材又は内側弁部材に支持される環状シール部材が、２つの部材の間に挟着されて設定されるので、その取り付けが容易になる。 In these specific examples, the outer valve member constituted by two members or the annular seal member supported by the inner valve member is sandwiched and set between the two members, so that the attachment is facilitated. .

上記第１の具体例では、
該外側及び内側環状シール部材がOリングとされ、該内側弁部材は、半径方向内側に向けて開放された環状のOリング受け入れ溝を有するものとすることができる。 In the first specific example,
The outer and inner annular seal members may be O-rings, and the inner valve member may have an annular O-ring receiving groove that is open radially inward.

上記第２の具体例では、該外側及び内側環状シール部材がOリングとされ、該外側弁部材が、半径方向外側に向けて開放された環状のOリング受け入れ溝を有するものとすることができる。 In the second specific example, the outer and inner annular sealing members may be O-rings, and the outer valve member may have an annular O-ring receiving groove that is opened outward in the radial direction. .

これら具体例では、特許文献４に開示されたものとは異なり、シール部材にOリングという汎用の部品を用いることで、特許文献４の弁手段と同等の確実なシールを可能としながら低コストとすることができる。この低コストとすることの要因として、シール部材として汎用のOリングを使用できるため、シール部材製作のための特別な金型を必要としないことがあげられる。また、上述のように、外側及び内側弁部材が閉止位置に近づき、その一方が他方に対して相対的に動くときに、外側及び内側弁部材間の密封を行っているOリングは、その変形や転動により、それら外側弁部材や内側弁部材の動きを容易にし、このため、グリースなどの潤滑油を付与する必要が無い。 In these specific examples, unlike the one disclosed in Patent Document 4, a general-purpose part called an O-ring is used as a sealing member, thereby enabling a reliable seal equivalent to the valve means of Patent Document 4 and low cost. can do. As a factor of this low cost, since a general-purpose O-ring can be used as a sealing member, a special mold for manufacturing the sealing member is not required. Further, as described above, when the outer and inner valve members approach the closed position and one of them moves relative to the other, the O-ring that seals between the outer and inner valve members is deformed. And rolling facilitate the movement of the outer valve member and the inner valve member, and therefore it is not necessary to apply lubricating oil such as grease.

更に上記第１の具体的には、
該外側前方弁部材は、外側弁座部に係止可能とされた外側係止部と、半径方向内側に延びて、該内側弁部材が該外側前方弁部材を前方に通過するのを阻止する内側係止部とを有するものとすることができる。要するに、外側弁部材及び内側弁部材が、筒状の継手本体から前方に抜け出るのを防ぐためである。 Furthermore, in the first specific example,
The outer front valve member has an outer locking portion that can be locked to the outer valve seat portion, and extends radially inward to prevent the inner valve member from passing forward through the outer front valve member. It can have an inside latching part. In short, this is to prevent the outer valve member and the inner valve member from slipping forward from the tubular joint body.

この場合、該雄型継手部材が該雄型部材受入部内に受け入れられて該弁手段と係合したときに、該外側前方弁部材の該内側係止部と該内側弁部材との間に該前後方向で隙間が生じるようになされ、該雄型継手部材が該雄型部材受入部から引き抜かれたときに、該閉止位置に向けて動く該弁手段における該外側弁部材の該外側環状シール部材が該外側弁座部と密封係合して該外側弁部材の前方への動きが停止された後に、該停止された外側弁部材に対して該内側弁部材が相対的に前方へ動き、該内側環状シール部材が該内側弁座部と密封係合するのを許容するようにすることが好ましい。 In this case, when the male joint member is received in the male member receiving portion and engaged with the valve means, the inner locking portion and the inner valve member of the outer front valve member are interposed between the inner valve member and the inner valve member. The outer annular seal member of the outer valve member in the valve means is adapted to generate a gap in the front-rear direction and moves toward the closed position when the male joint member is pulled out from the male member receiving portion. After the outer valve seat is engaged with the outer valve seat and the forward movement of the outer valve member is stopped, the inner valve member moves forward relative to the stopped outer valve member, Preferably, the inner annular seal member is allowed to sealingly engage with the inner valve seat.

また、これとは逆に、
該雄型継手部材が該雄型部材受入部内に受け入れられて該弁手段と係合したときに、該外側前方弁部材の該内側係止部と該内側弁部材とが該前後方向で当接するようになされ、該雄型継手部材が該雄型部材受入部から引き抜かれたときに、該閉止位置に向けて動く該弁手段における該内側弁部材の該内側環状シール部材が該内側弁座部と密封係合して該内側弁部材の前方への動きが停止された後に、該停止された内側弁部材に対して該外側弁部材が相対的に前方へ動き、該外側環状シール部材が該外側弁座部と密封係合するのを許容するようにすることもできる。 On the other hand,
When the male joint member is received in the male member receiving portion and engaged with the valve means, the inner locking portion of the outer front valve member and the inner valve member abut in the front-rear direction. The inner annular seal member of the inner valve member in the valve means moves toward the closed position when the male joint member is pulled out of the male member receiving portion. And the forward movement of the inner valve member is stopped, the outer valve member moves forward relative to the stopped inner valve member, and the outer annular seal member It is also possible to allow sealing engagement with the outer valve seat.

以下本発明を添付図面に示した実施形態に基づき説明する。 Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

本発明に係る管継手であって、雌型及び雄型継手部材が相互に離されている状態を示す断面図である。It is a pipe joint which concerns on this invention, Comprising: It is sectional drawing which shows the state from which the female type | mold and male type | mold joint member are mutually separated. 同雌型及び雄型継手部材が連結された状態を示す断面図である。It is sectional drawing which shows the state with which the female type | mold and the male type | mold joint member were connected. 連結されていた雄型継手部材が引き抜かれるときの雌型継手部材の断面図で、弁が閉止位置に近づいた状態を示している。It is sectional drawing of a female coupling member when the connected male coupling member is pulled out, and has shown the state where the valve approached the closed position. 他の実施形態に係る雌型及び雄型継手部材が連結された状態を示す断面図であり、It is sectional drawing which shows the state with which the female type | mold and male type | mold joint member which concern on other embodiment were connected, 図４の実施形態において、連結されていた雄型継手部材が引き抜かれるときの雌型継手部材の断面図で、弁が閉止位置に近づいた状態を示している。FIG. 4 is a cross-sectional view of the female joint member when the connected male joint member is pulled out in the embodiment of FIG. 4, showing a state where the valve is close to the closed position. 図４の実施形態において、弁が閉止位置になったときの状態を示す断面図である。In embodiment of FIG. 4, it is sectional drawing which shows a state when a valve will be in a closed position. 第３の実施形態に係る管継手における、連結されていた雄型継手部材が引き抜かれるときの雌型継手部材の断面図で、弁が閉止位置に近づいた状態を示している。In the pipe joint concerning a 3rd embodiment, it is a sectional view of a female joint member when a connected male joint member is pulled out, and shows the state where a valve approached a closed position.

以下、本発明に係る雌型継手部材の実施形態につき説明する。 Hereinafter, an embodiment of a female joint member according to the present invention will be described.

図１は、本発明に係る雌型継手部材１２及び雄型継手部材１４を備える管継手１０を示している。 FIG. 1 shows a pipe joint 10 including a female joint member 12 and a male joint member 14 according to the present invention.

雌型継手部材１２は、筒状の継手本体３４であって、その前端から後方に延びる雄型部材受入部３０、及び、該雄型部材受入部３０に受け入れた雄型継手部材１２の流体通路１６に連通される流体通路部３２を備える筒状の継手本体３４と、該継手本体内に設けられて、該流体通路部の開閉を行なう弁手段３６とを有する。継手本体３４は、具体的には、雄型部材受入部３０を有する第１筒状部材３４−１と、該第１筒状部材３４−１に連結された第２筒状部材３４−２とから構成されている。 The female joint member 12 is a tubular joint body 34, a male member receiving portion 30 extending rearward from the front end thereof, and a fluid passageway of the male joint member 12 received in the male member receiving portion 30. 16 includes a tubular joint body 34 including a fluid passage portion 32 communicated with the valve 16 and valve means 36 provided in the joint body for opening and closing the fluid passage portion. Specifically, the joint main body 34 includes a first tubular member 34-1 having a male member receiving portion 30, and a second tubular member 34-2 coupled to the first tubular member 34-1. It is composed of

弁手段３６は、図２乃至図３に明瞭に示すように、継手本体３４の内周面に雄型部材受入部３０を囲むように突設された環状の外側弁座部３８と、継手本体３４内部で、外側弁座部３８との間に環状の弁開口４０を形成する内側弁座部４２と、継手本体３４内部にその前後方向で変位可能に設けられ、外側及び内側弁座部３８，４２に係合して弁開口４０を閉じる閉止位置（図１）と、外側及び内側弁座部３８，４２から離れて弁開口４０を開放する開放位置（図２）との間で変位可能とされた弁４４とを有する。図示の例では、内側弁座部４２は、第２筒状部材３４−２の前端に環状に形成されており、該第２筒状部材３４−２には、内側弁座部より少し後方位置に貫通孔３４−２ａが斜めに設けられている。 As clearly shown in FIGS. 2 to 3, the valve means 36 includes an annular outer valve seat portion 38 projecting from the inner peripheral surface of the joint body 34 so as to surround the male member receiving portion 30, and a joint body. An inner valve seat 42 that forms an annular valve opening 40 between the outer valve seat 38 and the outer valve seat 38 is provided inside the joint body 34 so as to be displaceable in the front-rear direction. , 42 and disengageable between a closed position (FIG. 1) for closing the valve opening 40 and an open position (FIG. 2) for opening the valve opening 40 away from the outer and inner valve seats 38, 42. And a valve 44. In the illustrated example, the inner valve seat portion 42 is formed in an annular shape at the front end of the second tubular member 34-2, and the second tubular member 34-2 is positioned slightly behind the inner valve seat portion. The through holes 34-2a are provided obliquely.

弁４４は、外側環状シール部材としてのOリング４４−１を支持する外側弁部材４４−２と、内側環状シール部材としてのOリング４４−３を支持する内側弁部材４４−４とを備え、これら外側弁部材４４−２及び内側弁部材４４−４は、それぞれ、外側バネ４６−１及び内側バネ４６−２により外側弁座部３８及び内側弁座部４２に向けて前方へ付勢されている。 The valve 44 includes an outer valve member 44-2 that supports an O-ring 44-1 as an outer annular seal member, and an inner valve member 44-4 that supports an O-ring 44-3 as an inner annular seal member, The outer valve member 44-2 and the inner valve member 44-4 are urged forward by the outer spring 46-1 and the inner spring 46-2 toward the outer valve seat portion 38 and the inner valve seat portion 42, respectively. Yes.

外側弁部材４４−２及び内側弁部材４４−４は、雄型部材受入部３０に受け入れた雄型継手部材１４により後方に変位され、また、雄型継手部材１４が雄型部材受入部３０から引き出されることによりに外側及び内側バネ４６−１、４６−２より前方で変位されるようにされている。図示の実施形態においては、内側弁部材４４−４は、継手本体３４の前後方向に延びる長手方向軸線に平行な環状外周面４４−４ａと、環状内側環状シール部材としてのＯリング４４−３を受け入れるよう半径方向内側に開口した環状のＯリング受け入れ溝４４−４ｂとを有している。外側弁部材４４−２は、内側弁部材４４−４の環状外周面４４−４ａ上で前後方向に変位可能で、且つ、前後方向で相互に離された外側前方弁部材４４−２ａ及び外側後方弁部材４４−２ｂを備え、外側環状シール部材としてのOリング４４−１はそれら外側前方弁部材４４−２ａ及び外側後方弁部材４４−２ｂの間に挟着されている。外側環状シール部材としてのＯリング４４−１及び内側環状シール部材としてのＯリング４４−３は、弁４４が閉止位置にあるときに、それぞれ、外側弁座部３８及び内側弁座部４２に密封係合されるように設定されている。また、外側環状シール部材としてのＯリング４４−１は、内側弁部材４４−４の環状外周面４４−４ａと密封係合され、内側弁部材４４−４と外側弁部材４４−２との間を密封している。外側前方弁部材４４−２ａは、弁４４が閉止位置にあるときに、その略全体が環状の弁開口４０内に挿入された状態となるサイズとされているが、その後端部分には半径方向外側に延びる環状の外側係止部４４−２ｃが設けられており、当該外側前方弁部材４４−２ａが前方に飛び出さないようにしている。また、この外側前方弁部材４４−２ａは、その前端に半径方向内側に延びる環状の内側係止部４４−２ｄが設けられており、内側弁部材４４−４が前方に飛び出さないようにしている。 The outer valve member 44-2 and the inner valve member 44-4 are displaced rearward by the male joint member 14 received in the male member receiving portion 30, and the male joint member 14 is moved from the male member receiving portion 30. By being pulled out, it is displaced in front of the outer and inner springs 46-1 and 46-2. In the illustrated embodiment, the inner valve member 44-4 includes an annular outer peripheral surface 44-4a parallel to a longitudinal axis extending in the front-rear direction of the joint body 34, and an O-ring 44-3 as an annular inner annular seal member. And an annular O-ring receiving groove 44-4b opened radially inwardly. The outer valve member 44-2 is displaceable in the front-rear direction on the annular outer peripheral surface 44-4a of the inner valve member 44-4, and is separated from each other in the front-rear direction. A valve member 44-2b is provided, and an O-ring 44-1 as an outer annular seal member is sandwiched between the outer front valve member 44-2a and the outer rear valve member 44-2b. The O-ring 44-1 as the outer annular seal member and the O-ring 44-3 as the inner annular seal member are sealed to the outer valve seat portion 38 and the inner valve seat portion 42, respectively, when the valve 44 is in the closed position. It is set to be engaged. Further, the O-ring 44-1 as the outer annular seal member is hermetically engaged with the annular outer peripheral surface 44-4a of the inner valve member 44-4, and between the inner valve member 44-4 and the outer valve member 44-2. Is sealed. The outer front valve member 44-2a is sized such that when the valve 44 is in the closed position, substantially the entire outer valve member 44-2a is inserted into the annular valve opening 40. An annular outer locking portion 44-2c extending outward is provided to prevent the outer front valve member 44-2a from jumping forward. The outer front valve member 44-2a is provided with an annular inner locking portion 44-2d extending radially inward at the front end thereof so that the inner valve member 44-4 does not jump forward. Yes.

図示の雌型継手部材１２は、継手本体３４の内周面の外側弁座部３８及び内側弁座部４２よりも入口側にOリング６８が設けられており、雄型継手部材１４が雌型継手部材１２に挿入連結されて、外側及び内側環状シール部材としてのＯリング４４−１，４４−３と外側及び内側弁座部３８，４２との密封係合が解除されたときに、雄型継手部材１４の外周面に密封係合することにより、流体が雌型継手部材１２の内周面と雄型継手部材１４の外周面との間の隙間を通り、外部へ漏れ出すのを防ぐようにしている。また、継手本体３４には半径方向に変位可能にされた施錠子７０が設けられ、雌型継手部材１２に挿入された雄型継手部材１４の外周面に形成されている施錠子溝７２に係合して、雄型継手部材１４が雌型継手部材１２に固定されるようになっている。図中、７４は、該施錠子７０を施錠溝７２に押圧・押圧解除するためのスリーブである。 In the illustrated female joint member 12, an O-ring 68 is provided on the inlet side of the outer valve seat portion 38 and the inner valve seat portion 42 on the inner peripheral surface of the joint body 34, and the male joint member 14 is female. When the O-rings 44-1 and 44-3 as outer and inner annular seal members are inserted and connected to the joint member 12 and the sealing engagement between the outer and inner valve seat portions 38 and 42 is released, the male type By sealingly engaging the outer peripheral surface of the joint member 14, it is possible to prevent fluid from leaking outside through the gap between the inner peripheral surface of the female joint member 12 and the outer peripheral surface of the male joint member 14. I have to. Further, the joint body 34 is provided with a locking element 70 that is displaceable in the radial direction, and is engaged with a locking element groove 72 formed on the outer peripheral surface of the male coupling member 14 inserted into the female coupling member 12. In combination, the male joint member 14 is fixed to the female joint member 12. In the figure, reference numeral 74 denotes a sleeve for pressing and releasing the locking element 70 against the locking groove 72.

図３は、図２に示す連結状態にあった雄型継手部材１４を雌型継手部材１２から引き抜くときの、弁４４を構成する外側弁部材４４−２及び内側弁部材４４−４の動きを示している。 FIG. 3 shows the movement of the outer valve member 44-2 and the inner valve member 44-4 constituting the valve 44 when the male joint member 14 in the connected state shown in FIG. 2 is pulled out from the female joint member 12. Show.

すなわち、雄型継手部材１４の引き抜きに伴い、弁４４が閉止位置に近づくと、外側弁部材４４−２が支持するＯリング４４−１と内側弁部材４４−４が支持するＯリング４４−３は、それぞれ、外側弁座部３８及び内側弁座部４２に近接する。このとき図３に示すように、内側環状シール部材としてのＯリング４４−３が内側弁座部４２に係合する前に、外側環状シール部材としてのＯリング４４−１が外側弁座部３８に密封係合状態となり、外側弁部材４４−２の動きが停止した場合でも、内側弁部材４４−４は外側弁部材４４−２の動きの停止にかかわらず更に前進して内側シール部材としてのＯリング４４−３が内側弁座部４２に確実に密封係合された状態となる。これは外側弁部材４４−２と内側弁部材４４−４との相対的動きを可能としているためであるが、図示の実施形態では、前述の通り、外側前方弁部材４４−２ａが内側係止部４４−２ｄを備えているので、上記のような外側弁部材４４−２に対する内側弁部材４４−４の前方への動きを可能とするためには、弁が雄型継手部材１４によって開放位置とされたときに、図２に示すように、外側前方弁部材４４−２の内側係止部４４−２ｄと内側弁部材４４−４の前端との間に隙間ｄが生じるようにする必要がある。上記相対的動きは、外側弁部材及び内側弁部材の間の密封をはかっている外側環状シール部材がOリング４４−１とされているために、当該Oリングの変形または内側弁部材の環状面上での転動により容易に生じ、このためにこれら外側及び内側弁部材の間にグリースなどの潤滑油を設ける必要は無い。 That is, when the valve 44 approaches the closed position as the male joint member 14 is pulled out, the O-ring 44-1 supported by the outer valve member 44-2 and the O-ring 44-3 supported by the inner valve member 44-4. Are close to the outer valve seat 38 and the inner valve seat 42, respectively. At this time, as shown in FIG. 3, before the O-ring 44-3 as the inner annular seal member engages with the inner valve seat portion 42, the O-ring 44-1 as the outer annular seal member becomes the outer valve seat portion 38. Even if the movement of the outer valve member 44-2 is stopped, the inner valve member 44-4 further moves forward regardless of the movement of the outer valve member 44-2 as an inner seal member. The O-ring 44-3 is securely sealed and engaged with the inner valve seat portion 42. This is because the outer valve member 44-2 and the inner valve member 44-4 can be moved relative to each other. However, in the illustrated embodiment, as described above, the outer front valve member 44-2a is locked to the inner side. Since the portion 44-2d is provided, in order to allow the inner valve member 44-4 to move forward with respect to the outer valve member 44-2 as described above, the valve is opened by the male joint member 14. 2, it is necessary to create a gap d between the inner locking portion 44-2d of the outer front valve member 44-2 and the front end of the inner valve member 44-4 as shown in FIG. is there. The relative movement is caused by the deformation of the O-ring or the annular surface of the inner valve member because the outer annular seal member sealing the outer valve member and the inner valve member is the O-ring 44-1. It is easily generated by the above rolling, and it is not necessary to provide lubricating oil such as grease between the outer and inner valve members.

図４乃至図６は、弁４４が閉止位置に近づいたときに、上述の例とは逆に、内側環状シール部材としてのＯリング４４−３が外側環状シール部材としてのＯリング４４−１よりも先に密封係合を生じる例を示している。この場合は、弁４４が開放位置にあるときに、前述のような隙間を設ける必要は無い。 4 to 6, when the valve 44 approaches the closed position, the O-ring 44-3 as the inner annular seal member is opposite to the O-ring 44-1 as the outer annular seal member, contrary to the above example. Also shows an example in which a sealing engagement is first generated. In this case, it is not necessary to provide the gap as described above when the valve 44 is in the open position.

図７は第３の実施形態を示しており、上述の実施形態とは異なり、内側弁部材４４−４を２つの部材、即ち内側前方弁部材４４−４ｃ及び内側後方弁部材４４−４ｄから構成し、その間に内側環状シール部材としてのOリング４４−３を挟着し、このOリング４４−３に内側弁座部４２との密封係合の他に、単一部材として形成した外側弁部材４４−２と内側弁部材４４−４との間の密封をも行う機能を持たせている。外側弁部材４４−２の内周には前述の実施形態における内側弁部材４４−４の環状外周面４４−４ａに相当する環状内周面４４−２ｅを設け、内側環状シール部材としてのOリング４４−３を該環状内周面４４−２ｅに密封係合させている。この実施形態では、弁４４が雄型継手部材１４によって閉止位置から開放位置の方へ変位された状態では、内側前方弁部材４４−４ｃと外側弁部材４４−２の内側係止部４４−２ｄとの間には前後方向での隙間はなく、従って、弁４４が開放位置から閉止位置に近づいたときに、先ず、内側環状シール部材としてのOリング４４−３が内側弁座部４２に密封係合し、それによって内側弁部材４４−４の動きが停止された状態で、外側弁部材４４−２が更に前方に進み外側環状シール部材としてのOリング４４−１が外側弁座部３８に密封係合して、外側弁部材４４−２の動きが停止するようになっている。 FIG. 7 shows a third embodiment. Unlike the above-described embodiment, the inner valve member 44-4 is composed of two members, that is, an inner front valve member 44-4c and an inner rear valve member 44-4d. In addition, an O-ring 44-3 as an inner annular seal member is sandwiched therebetween, and an outer valve member formed as a single member in addition to the sealing engagement with the inner valve seat portion 42 on the O-ring 44-3 The function of also sealing between 44-2 and the inner side valve member 44-4 is given. An annular inner peripheral surface 44-2e corresponding to the annular outer peripheral surface 44-4a of the inner valve member 44-4 in the above-described embodiment is provided on the inner periphery of the outer valve member 44-2, and an O-ring as an inner annular seal member 44-3 is sealingly engaged with the annular inner peripheral surface 44-2e. In this embodiment, when the valve 44 is displaced from the closed position toward the open position by the male joint member 14, the inner locking portion 44-2d of the inner front valve member 44-4c and the outer valve member 44-2. Therefore, when the valve 44 approaches the closed position from the open position, first, the O-ring 44-3 as the inner annular seal member is sealed to the inner valve seat portion 42. The outer valve member 44-2 is further advanced forward in the state where the movement of the inner valve member 44-4 is stopped by engaging, and the O-ring 44-1 as the outer annular seal member is moved to the outer valve seat portion 38. The movement of the outer valve member 44-2 is stopped by the sealing engagement.

以上、本発明に係る雌型継手部材の実施形態につき述べたが、本発明はこれに限定されるものではない。本発明の基本的特徴は、弁を外側及び内側弁部材から構成し、それらを前後方向で相対的に変位可能とした点にあり、外側弁部材や内側弁部材を上述のように、２部材から構成する必要は必ずしも必要は無く、例えば上述した第１及び第２の実施形態の場合、外側弁部材をワンピース（単一部材）のものとし、環状シール部材がその外周面側及び内周面側にそれぞれ設けられるようなものとすることもできる。 While the embodiment of the female joint member according to the present invention has been described above, the present invention is not limited to this. The basic feature of the present invention is that the valve is composed of outer and inner valve members, which are relatively displaceable in the front-rear direction, and the outer valve member and the inner valve member are two members as described above. For example, in the case of the first and second embodiments described above, the outer valve member is a one-piece (single member), and the annular seal member has its outer peripheral surface side and inner peripheral surface. It can also be provided on each side.

管継手１０；雌型継手部材１２；雄型継手部材１４；流体通路１６；雄型部材受入部３０；流体通路部３２；第１筒状部材３４−１；第２筒状部材３４−２；貫通孔３４−２ａ；継手本体３４；弁手段３６；外側弁座部３８；弁開口４０；内側弁座部４２；弁４４；外側環状シール部材としてのOリング４４−１；外側弁部材４４−２；外側前方弁部材４４−２ａ；外側後方弁部材４４−２ｂ；外側係止部４４−２ｃ；内側係止部４４−２ｄ；環状内周面４４−２ｅ；内周面４４−２ｅ内側環状シール部材としてのOリング４４−３；内側弁部材４４−４；環状外周面４４−４ａ；溝４４−４ｂ；内側前方弁部材４４−４ｃ；内側後方弁部材４４−４ｄ；外側バネ４６−１；内側バネ４６−２；Oリング６８；施錠子７０；施錠子溝７２；スリーブ７４ Pipe joint 10; Female joint member 12; Male joint member 14; Fluid passage 16; Male member receiving portion 30; Fluid passage portion 32; First tubular member 34-1; Second tubular member 34-2; Joint body 34; valve means 36; outer valve seat 38; valve opening 40; inner valve seat 42; valve 44; O-ring 44-1 as an outer annular seal member; outer valve member 44- 2; outer front valve member 44-2a; outer rear valve member 44-2b; outer locking portion 44-2c; inner locking portion 44-2d; annular inner peripheral surface 44-2e; inner peripheral surface 44-2e inner annular O-ring 44-3 as a seal member; inner valve member 44-4; annular outer peripheral surface 44-4a; groove 44-4b; inner front valve member 44-4c; inner rear valve member 44-4d; Inner spring 46-2; O-ring 68; lock 70; lock groove 72; 74

Claims

前端から後方に延びる雄型部材受入部、及び、該雄型部材受入部よりも後方位置で、該雄型部材受入部に受け入れた雄型継手部材の流体通路に連通される流体通路部を備える筒状の継手本体と、
該継手本体内に設けられて、該流体通路部の開閉を行なう弁手段と
を有し、
該弁手段が、
該継手本体の内周面に該雄型部材受入部を囲むように半径方向内側に突設された環状の外側弁座部と、
該継手本体内部で、該外側弁座部との間に環状の弁開口を形成する環状の内側弁座部と、
該継手本体の内部に該継手本体の前後方向で変位可能に設けられ、該外側及び内側弁座部に係合して該弁開口を閉じる閉止位置と、該外側及び内側弁座部から離れて該弁開口を開放する開放位置との間で変位可能とされた環状の弁であって、閉止位置にあるときに、該外側弁座部に押圧されて該外側弁座部と当該弁との間を密封する外側環状シール部材と、該内側弁座部に押圧されて該内側弁座部と当該弁との間を密封する内側環状シール部材とを備える弁と、
該弁を該閉止位置に向けて付勢するバネ手段と、
を備え、
該弁が、該外側環状シール部材を支持する外側弁部材と、該内側環状シール部材を支持する内側弁部材とを備え、該外側弁部材及び内側弁部材は、該雄型部材受入部に受け入れた雄型継手部材により後方に変位され、また、該雄型継手部材が該雄型部材受入部から引き出されることにより該バネ手段により前方に変位されるようにされており、且つ、該前後方向で相対的に変位可能で、少なくとも当該弁が閉止位置にあるときは、相互に密封係合されるようになされており、
該バネ手段は、該外側弁部材を前方に付勢する外側バネと、前記内側弁部材を前方に付勢する内側バネとを備え、該弁が該閉止位置にあるときは、該外側及び内側バネが、それぞれ、該外側及び内側環状シール部材を押圧するようにした、
ことを特徴とする雌型継手部材。 A male member receiving portion extending rearward from the front end, and a fluid passage portion communicating with the fluid passage of the male joint member received in the male member receiving portion at a position rearward of the male member receiving portion. A tubular joint body;
Valve means provided in the joint body for opening and closing the fluid passage portion;
The valve means
An annular outer valve seat projecting radially inward so as to surround the male member receiving portion on the inner peripheral surface of the joint body;
An annular inner valve seat that forms an annular valve opening with the outer valve seat within the joint body;
A closed position provided inside the joint main body so as to be displaceable in the front-rear direction of the joint main body, engaged with the outer and inner valve seats to close the valve opening, and separated from the outer and inner valve seats An annular valve that is displaceable between an open position that opens the valve opening, and when the valve is in the closed position, the annular valve is pressed by the outer valve seat portion to cause a contact between the outer valve seat portion and the valve. A valve comprising: an outer annular seal member that seals between; and an inner annular seal member that is pressed by the inner valve seat portion and seals between the inner valve seat portion and the valve;
Spring means for biasing the valve toward the closed position;
With
The valve includes an outer valve member that supports the outer annular seal member, and an inner valve member that supports the inner annular seal member, and the outer valve member and the inner valve member are received in the male member receiving portion. The male joint member is displaced rearward by the male joint member, and the male joint member is displaced forward by the spring means by being pulled out from the male member receiving portion, and the front-rear direction At least when the valve is in the closed position, so that they are in sealing engagement with each other,
The spring means includes an outer spring that urges the outer valve member forward and an inner spring that urges the inner valve member forward. When the valve is in the closed position, the outer and inner springs are provided. Springs pressed against the outer and inner annular seal members, respectively.
A female joint member.

該内側弁部材は、該筒状弁体の前後方向に延びる長手軸線に平行な環状外周面を有し、
該外側弁部材は、該内側弁部材の該環状外周面上で該前後方向に変位可能で、該前後方向で相互に離された外側前方弁部材及び外側後方弁部材を備え、外側前方弁部材が外側後方弁部材よりも前方位置とされ、該外側バネが該外側後方弁部材に係合されるようになされており、該外側環状シール部材が該外側前方弁部材及び外側後方弁部材の間に挟着され、該外側環状シール部材が該外側弁座部及び内側弁部材の該環状外周面と密封係合するように設定されている請求項１に記載の雌型継手部材。 The inner valve member has an annular outer peripheral surface parallel to a longitudinal axis extending in the front-rear direction of the cylindrical valve body,
The outer valve member includes an outer front valve member and an outer rear valve member that are displaceable in the front-rear direction on the annular outer peripheral surface of the inner valve member, and are separated from each other in the front-rear direction. Is positioned forward of the outer rear valve member, and the outer spring is engaged with the outer rear valve member, and the outer annular seal member is disposed between the outer front valve member and the outer rear valve member. The female joint member according to claim 1, wherein the outer annular seal member is set so as to be sealingly engaged with the outer peripheral surface of the outer valve seat portion and the inner valve member.

該外側弁部材は、該筒状弁体の前後方向に延びる長手軸線に平行な環状内周面を有し、
該内側弁部材は、該外側弁部材の該環状内周面に接して該前後方向に変位可能で、該前後方向で相互に離された内側前方弁部材及び内側後方弁部材を備え、内側前方弁部材が内側後方弁部材よりも前方位置とされ、該内側バネが該内側後方弁部材に係合されるようになされており、該内側環状シール部材が該内側前方弁部材及び内側後方弁部材の間に挟着され、該内側環状シール部材が該内側弁座部及び外側弁部材の該環状内周面に密封係合するように設定されている請求項１に記載の雌型継手部材。 The outer valve member has an annular inner peripheral surface parallel to a longitudinal axis extending in the front-rear direction of the cylindrical valve body,
The inner valve member includes an inner front valve member and an inner rear valve member that are displaceable in the front-rear direction in contact with the annular inner peripheral surface of the outer valve member and separated from each other in the front-rear direction. The valve member is positioned in front of the inner rear valve member, the inner spring is engaged with the inner rear valve member, and the inner annular seal member is formed between the inner front valve member and the inner rear valve member. 2. The female joint member according to claim 1, wherein the inner annular seal member is set so as to be sealingly engaged with the inner circumferential surface of the inner valve seat portion and the outer valve member.

該外側及び内側環状シール部材はOリングとされ、該内側弁部材は、半径方向内側に向けて開放された環状のOリング受け入れ溝を有している請求項２に記載の雌型継手部材。 3. The female joint member according to claim 2, wherein the outer and inner annular seal members are O-rings, and the inner valve member has an annular O-ring receiving groove that is opened radially inward.

該外側及び内側環状シール部材はOリングとされ、該外側弁部材は、半径方向外側に向けて開放された環状のOリング受け入れ溝を有している請求項３に記載の雌型継手部材。 4. The female joint member according to claim 3, wherein the outer and inner annular seal members are O-rings, and the outer valve member has an annular O-ring receiving groove opened outward in the radial direction.

該外側前方弁部材は、該外側弁座部に係止可能とされた外側係止部と、半径方向内側に延びて、該内側弁部材が該外側前方弁部材を前方に通過するのを阻止する内側係止部とを有する請求項２に記載の雌型継手部材。 The outer front valve member has an outer locking portion that can be locked to the outer valve seat portion, and extends radially inward to prevent the inner valve member from passing forward through the outer front valve member. The female joint member according to claim 2, further comprising an inner locking portion.

該雄型継手部材が該雄型部材受入部内に受け入れられて該弁手段と係合したときに、該外側前方弁部材の該内側係止部と該内側弁部材との間に該前後方向で隙間が生じるようになされ、該雄型継手部材が該雄型部材受入部から引き抜かれたときに、該閉止位置に向けて動く該弁手段における該外側弁部材の該外側環状シール部材が該外側弁座部と密封係合して該外側弁部材の前方への動きが停止された後に、該停止された外側弁部材に対して該内側弁部材が相対的に前方へ動き、該内側環状シール部材が該内側弁座部と密封係合するのを許容するようにした請求項６に記載の雌型継手部材。 When the male joint member is received in the male member receiving portion and engaged with the valve means, the front and rear direction between the inner locking portion of the outer front valve member and the inner valve member is The outer annular seal member of the outer valve member in the valve means moves toward the closed position when the male joint member is withdrawn from the male member receiving portion so that a gap is formed. After the forward movement of the outer valve member is stopped by sealing engagement with the valve seat portion, the inner valve member moves forward relative to the stopped outer valve member, and the inner annular seal 7. The female joint member according to claim 6, wherein the member is allowed to sealingly engage with the inner valve seat portion.

該雄型継手部材が該雄型部材受入部内に受け入れられて該弁手段と係合したときに、該外側前方弁部材の該内側係止部と該内側弁部材とが該前後方向で当接するようになされ、該雄型継手部材が該雄型部材受入部から引き抜かれたときに、該閉止位置に向けて動く該弁手段における該内側弁部材の該内側環状シール部材が該内側弁座部と密封係合して該内側弁部材の前方への動きが停止された後に、該停止された内側弁部材に対して該外側弁部材が相対的に前方へ動き、該外側環状シール部材が該外側弁座部と密封係合するのを許容するようにした請求項３に記載の雌型継手部材。
When the male joint member is received in the male member receiving portion and engaged with the valve means, the inner locking portion of the outer front valve member and the inner valve member abut in the front-rear direction. The inner annular seal member of the inner valve member in the valve means moves toward the closed position when the male joint member is pulled out of the male member receiving portion. And the forward movement of the inner valve member is stopped, the outer valve member moves forward relative to the stopped inner valve member, and the outer annular seal member The female joint member according to claim 3, wherein the female joint member is allowed to be sealingly engaged with the outer valve seat portion.