JPH06174164A - Joint - Google Patents

Abstract

PURPOSE: To surely prevent the leakage of fluid when a pair of coupling members constituting a quick-disconnection/ connection coupling are separated from each other by providing the pair of coupling members with check valves which are exerted with spring forces and pressed into contact with valve seats when the coupling members are separated from each other. CONSTITUTION: This coupling comprises female and male coupling members 10, 12 butted together by threadably engaging a coupling nut 30 with an externally threaded section 38 and internally threaded sections 14, 16 in which a flexible high pressure pipe is threadably attached are formed at the ends of the coupling members 10, 12 opposite to their abutting end faces. The coupling members 10, 12 have respective poppets 46, 48 serving as check calves slidably mounted in their respective liquid passages 18, 20. When the coupling is in a connected state, the poppets 46, 48 are pushed inward against springs 50, 52 as columnar projections 72, 74 provided at the poppets 46, 48 are pressed against each other, and seal faces 76, 78 are separated from valve seats 22, 24. When the coupling members are separated from each other, the poppets 46, 48 are pressed into contact with the valve seats 22, 24.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】この発明は、継手、特に流体用継
手に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint, particularly a joint for fluids.

【０００２】[0002]

【従来の技術】例えば、高圧流体源を必要とする工具の
使用中に、その工具を高圧供給から取り外さなければな
らないようなことがしばしば起こる。今までのところ、
「急速脱着」継手（ワンタッチカップラ）として知られ
ている継手が使用されてきた。これらの継手は、一方が
バネにより付勢された玉軸受が使用され、他方の環状の
溝に丁度噛み合うようになっており、流体シール性を確
実にするために継手部材を互いに引き合うようになって
いる。2. Description of the Prior Art For example, it often happens that during use of a tool that requires a source of high pressure fluid, the tool must be removed from the high pressure supply. until now,
The fittings known as "quick disconnect" fittings (one-touch couplers) have been used. These joints use ball bearings, one of which is biased by a spring, and are designed to engage exactly with the annular groove of the other, so that the joint members can be drawn to each other to ensure fluid sealing. ing.

【０００３】[0003]

【発明が解決しようとする課題】この種の継手には少な
からず欠点が引き合いに出されてきた。すなわち、製造
コストの問題、メンテナンスのやりにくさ、そして特に
高圧作動時において、例えば２３２０kg／sq.cm （３
３，０００lb／sq.in ）にて部分的または完全に漏れる
傾向がある。Not a few drawbacks have been cited for this type of joint. That is, the problem of manufacturing cost, the difficulty of maintenance, and especially at high pressure operation, for example, 2320 kg / sq.cm (3
At 3,000 lb / sq.in) it tends to leak partially or completely.

【０００４】さらに、この種の弁には高い安全率、例え
ば２．５が要求される。現有する弁にてこの安全率を確
保することは経済的に難しい。Furthermore, a high safety factor, for example 2.5, is required for this type of valve. It is economically difficult to secure this safety factor with existing valves.

【０００５】本発明はこれらの欠点を取り除き、あるい
は軽減することを目的とする。The present invention aims to eliminate or reduce these drawbacks.

【０００６】[0006]

【課題を解決するための手段】本発明によれば、一対の
継手部材よりなり、各継手部材は流体系に接続する手
段、突き合わせ端面でシールし得るように前記継手部材
を保持する手段、そして前記継手部材が突き合わせ端面
同士相接する関係に設置されたとき、連通するようにな
された流体通路を有し、各流体通路には前記継手部材か
らの流体の流出を防止する逆止め弁が備えられ、各逆止
め弁は、前記継手部材が結合されたとき、そのシール位
置から弁を移動させる手段を有している流体用継手を提
供するものである。According to the present invention, there is a pair of joint members, each joint member connecting to a fluid system, means for holding said joint member so that it can be sealed at the abutting end faces, and When the joint members are installed in a relationship in which the abutting end faces are in contact with each other, the joint members have fluid passages that communicate with each other, and each fluid passage is provided with a check valve that prevents fluid from flowing out from the joint members. Each check valve provides a fluid coupling having means for moving the valve from its sealed position when the coupling members are mated.

【０００７】好ましくは、継手部材を一体化するように
保持する手段は、一方の継手部材に嵌装され他方の継手
部材にネジ結合できる回転自在なネジ付きカラーからな
り、ネジ付きカラーを締め込むとき前記継手部材の端面
同士をより接近させることが出来るようになっている。Preferably, the means for integrally holding the joint member comprises a rotatable threaded collar which is fitted to one joint member and can be screwed to the other joint member, the threaded collar being tightened. At this time, the end faces of the joint member can be brought closer to each other.

【０００８】好ましくは、継手部材の突き合わせ端面に
シール手段を含んでいる。[0008] Preferably, the joint member includes a sealing means at the abutting end surface.

【０００９】前記シール手段は、一方の継手部材に設け
られてＯリングを収容する環状の凹部と、他方の継手部
材に設けられ前記凹部に嵌まり込んで前記Ｏリングを加
圧する環状の凸部とからなる。The sealing means is provided on one joint member to accommodate an O-ring, and an annular convex portion is provided on the other joint member to fit in the recess to press the O-ring. Consists of.

【００１０】好ましくは、各逆止め弁は、前記流体通路
の中を可動な弁体と、突き合わせ端面側開口方向へ前記
弁体を付勢する付勢手段と、弁体に設けられかつ継手部
材に形成された弁座に弁体が着座するときに弁座に係合
して前記流路を閉鎖するシール面と、弁体がその着座位
置にあるとき継手部材の突き合わせ端面より突出する突
起とからなる。Preferably, each check valve is provided in the valve body and a coupling member provided with a valve body that is movable in the fluid passage, a biasing means that biases the valve body toward the abutting end face side opening direction. A sealing surface that engages the valve seat to close the flow passage when the valve body is seated on the valve seat formed on the valve seat; and a projection that projects from the abutting end surface of the joint member when the valve body is in its seated position. Consists of.

【００１１】好ましくは、前記継手部材の突き合わせ端
面側開口からあまり離れないように弁体の動きを制限す
る停止手段が、流体通路内に設けられている。Preferably, a stop means for restricting the movement of the valve element is provided in the fluid passage so as not to be too far from the abutting end face side opening of the joint member.

【００１２】好ましくは、各弁体に、シール面から突起
とは反対側の端面に及ぶ流体通路が備わっている。[0012] Preferably, each valve body is provided with a fluid passage extending from the sealing surface to the end surface opposite to the projection.

【００１３】[0013]

【作用】本発明の継手によると、一対の継手部材を結合
させると、一方の継手部材の流体通路を経て他方の流体
通路に至る流路が形成される。また、継手部材を離脱さ
せる時には、各継手部材流路が弁によりそれぞれ閉鎖さ
れ、どちらの継手部材からも流体が漏れることはない。According to the joint of the present invention, when a pair of joint members are joined together, a flow path is formed which extends through the fluid passage of one joint member to the other fluid passage. Further, when the joint member is detached, each joint member flow passage is closed by the valve, and the fluid does not leak from either joint member.

【００１４】[0014]

【実施例】本発明の実施例は流体用継手の端面を示す添
付図面を例示参照するという方法にて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to the accompanying drawings showing an end face of a fluid coupling.

【００１５】流体用継手は、互いに突き合わされる雄継
手部材(10)および雌継手部材(12)からなる。各継手部材
(10)(12)は、それぞれ流体通路(18)(20)を有し、各継手
部材(10)(12)の突き合わせ端面とは反対側の端部には、
可撓性高圧パイプ（図示せず）の端部に設けられたおね
じにねじ合わされるめねじ部(14)(16)が形成されてい
る。各めねじ部(14)(16)はそれぞれ流体通路(18)(20)に
連通している。各流体通路(18)(20)は、それぞれ弁座(2
2)(24)を形成する傾斜部を経て、突き合わせ端面側開口
(26)(28)においてその内径が小さくなっている。The fluid joint comprises a male joint member (10) and a female joint member (12) which are butted against each other. Each joint member
(10) (12) has a fluid passage (18) (20), respectively, at the end opposite to the abutting end face of each joint member (10) (12),
Female thread portions (14) and (16) are formed to be screwed into male threads provided at the end of a flexible high-pressure pipe (not shown). The female screw portions (14) and (16) communicate with the fluid passages (18) and (20), respectively. Each fluid passage (18) (20)
2) Open the butt end face side through the inclined part that forms (24)
In (26) and (28), the inner diameter is small.

【００１６】めねじを有する継手ナット(30)は、雌継手
部材(12)に自由に回転可能なように嵌装されており、雌
継手部材(12)の外周面に沿って、雌継手部材(12)の長さ
の中間に設けられた止め輪(32)と同突き合わせ端部に一
体に形成された外向きフランジ(36)との間をスライドで
きるようになっている。The joint nut (30) having a female thread is fitted into the female joint member (12) so as to be freely rotatable, and the female joint member is fitted along the outer peripheral surface of the female joint member (12). It is possible to slide between a retaining ring (32) provided in the middle of the length of (12) and an outward flange (36) integrally formed at the butting end.

【００１７】雄継手部材(10)の内端部にはナット(30)に
ねじ合わされるおねじ部(38)が形成されている。A male screw portion (38) screwed to the nut (30) is formed on the inner end portion of the male joint member (10).

【００１８】両継手部材(10)(12)を突き合わせて、おね
じ部(38)にナット(30)を締め付けて行くことにより両者
は保持されついには固く締め付けられることが理解され
るであろう。It will be appreciated that by abutting both joint members (10) (12) and tightening the nut (30) onto the male thread (38), both are retained and finally tightened. .

【００１９】両継手部材(10)(12)がナット(30)により保
持されるとき、それらの突き合わせ部のシール性を増す
ために、雌継手部材(12)の突き合わせ端面にはＯリング
(42)が収容される環状の凹部(40)が形成されている。そ
して、この凹部(40)に対応する環状の凸部(44)が雄継手
部材(12)の内端面に形成されている。環状の凸部(44)
は、両継手部材(10)(12)の突き合わせ面に必要なるシー
ル性効果をあらしめるため、凹部(40)に嵌装し、さらに
Ｏリング(42)に予圧を与える。When both joint members (10) and (12) are held by the nut (30), an O-ring is provided on the abutting end face of the female joint member (12) in order to increase the sealing property of their abutting portions.
An annular recess (40) for accommodating the (42) is formed. An annular protrusion (44) corresponding to the recess (40) is formed on the inner end surface of the male joint member (12). Annular projections (44)
In order to provide the sealing effect required for the abutting surfaces of both joint members (10), (12), is fitted in the recess (40) and further preloaded on the O-ring (42).

【００２０】各継手部材(10)(12)は、それぞれ流体通路
(18)(20)に滑動可能に取り付けられたポペット(46)(48)
を有している。Each joint member (10) (12) is a fluid passage.
Poppets (46) (48) slidably attached to (18) (20)
have.

【００２１】各ポペット(46)(48)の底部には凹部(54)(5
6)が形成され、流体通路(18)(20)のめねじ部(14)(16)側
の端部にネジ止めされたバネ受け(62)(64)に別の凹部(5
8)(60)が形成されている。両凹部(54)(56)(58)(60)の間
にコイルばね(50)(52)が納められ、このコイルばね(50)
(52)により、ポペット(46)(48)は突き合わせ端面方向に
付勢されている。各バネ受け(62)(64)は、めねじ部(14)
(16)と流体通路(18)(20)を連通する連通路(66)(68)を有
してる。At the bottom of each poppet (46) (48) is a recess (54) (5
6) is formed, and another recess (5) is formed in the spring bearings (62) (64) screwed to the female threaded parts (14) (16) side ends of the fluid passages (18) (20).
8) (60) is formed. A coil spring (50) (52) is housed between the two recesses (54) (56) (58) (60).
The poppets (46) and (48) are biased toward the abutting end faces by the (52). Each spring receiver (62) (64) has a female thread (14)
It has communication passages (66) and (68) which communicate the fluid passages (18) and (20) with the fluid passages (18) and (20).

【００２２】バネ受け(62)(64)には、バネ受け(62)(64)
より突き合わせ端面に向かって伸びている各流体通路(1
8)(20)内に位置させられた中空スペーサ(69)(70)が設け
られている。The spring receivers (62) (64) include spring holders (62) (64).
Each fluid passage extending toward the butt end face (1
Hollow spacers (69) (70) located within 8 (20) are provided.

【００２３】各ポペット(46)(48)は、円柱状の突起(72)
(74)を備えている。各突起(72)(74)は、継手部材(10)(1
2)が結合される前には、継手部材(10)(12)の突き合わせ
端面を越えて突出するようになされている。突起(72)(7
4)とポペット(46)(48)の本体との間には、バネ(50)(52)
の作用によりポペット(46)(48)が各弁座(22)(24)に着座
させられるるときに弁座(22)(24)に係合するテーパ状の
シール面(76)(78)が形成されている。Each poppet (46) (48) has a cylindrical protrusion (72).
(74) is provided. Each protrusion (72) (74) is attached to the joint member (10) (1
Before the 2) is joined, it projects beyond the abutting end faces of the joint members (10, 12). Protrusion (72) (7
Between the 4) and the body of the poppet (46) (48) is the spring (50) (52).
Of the taper seal surface (76) (78) that engages the valve seats (22) (24) when the poppet (46) (48) is seated on each valve seat (22) (24) Are formed.

【００２４】各ポペット(46)(48)のシール面(76)(78)に
は直径方向に貫通する孔(80)(82)が設けられている。各
孔(80)(82)はバネ受け凹部(54)(56)から伸びている軸方
向の孔(84)(86)に連通するようになっており、これによ
り継手の一端から他端に至る流体通路が確保されてい
る。Holes (80) (82) penetrating in the diametrical direction are formed in the sealing surfaces (76) (78) of the poppets (46) (48). Each hole (80) (82) communicates with an axial hole (84) (86) extending from the spring receiving recess (54) (56), which allows one end of the joint to A fluid passage leading to it is secured.

【００２５】加圧流体を接続しない状態で、一対の継手
部材(10)(12)を結合させると、まず、ポペット(46)(48)
の突起(72)(74)同士が突き合せられ、更に継手部材(10)
(12)を締め付けて行くとポペット(46)(48)はバネ(50)(5
2)に抗して流体通路(18)(20)内を滑動し、各ポペット(4
6)(48)のシール面(76)(78)が弁座(22)(24)より離れると
ともに、継手部材(10)(12)同士が突き合わせられる。こ
れにより、継手に加圧流体が接続されると、雄継手部材
(10)のめねじ部(14)から同流体通路(18)を経て雄継手部
材(10)内のポペット(46)、雄継手部材(10)の突き合わせ
端面側開口(26)、雌継手部材(12)の突き合わせ端面側開
口(28)、雌継手部材(12)内のポペット(48)、雌継手部材
(12)の流体通路(20)そして同めねじ部(16)へと継手を通
して流体の流通を可能ならしめる（逆もまた同様）。When the pair of joint members (10) and (12) are joined together without connecting the pressurized fluid, first, the poppets (46) and (48) are joined.
The projections (72) (74) of the
When tightening (12), the poppet (46) (48) will spring (50) (5
Slide in the fluid passages (18) (20) against 2),
The sealing surfaces (76) (78) of the (6) (48) are separated from the valve seats (22) (24), and the joint members (10) (12) are butted against each other. As a result, when the pressurized fluid is connected to the joint, the male joint member
Poppet (46) in male joint member (10) from female thread portion (14) of (10) through fluid passage (18), butting end face side opening (26) of male joint member (10), female joint member Butt end face side opening (28) of (12), poppet (48) in female joint member (12), female joint member
Allow fluid to flow through the joint to the fluid passageway (20) and the female threaded portion (16) of (12) (and vice versa).

【００２６】継手がナット(30)を緩めて継手部材(10)(1
2)を離脱させる時には、内部流体の圧力とバネ(50)(52)
の作用により、各ポペットは流路閉鎖位置に復帰し、継
手部材(10)(12)が完全に離脱してもどちらからも流体が
漏れることはない。The joint loosens the nut (30) and the joint member (10) (1
When releasing 2), the internal fluid pressure and spring (50) (52)
By the action, each poppet returns to the flow path closed position, and even if the joint members (10) and (12) are completely separated, the fluid does not leak from either of them.

【００２７】雄継手部材(10)にのみ加圧流体が供給され
ているときには、雄継手部材(10)内のポペット(46)を弁
座(22)に押し付けているバネ力は流体圧により補強され
ている。この雄継手部材(10)に雌継手部材(12)を結合し
ていくと、加圧されていない雌継手部材(12)内のポペッ
ト(48)は、雄継手部材(10)のポペット(46)によって雌継
手部材(12)内へ押し込まれその端面がスペーサー(70)の
端面に突き当たるまで移動する。雌継手部材(12)内のポ
ペット(48)はこの位置以上には移動できなくなってお
り、その結果雄継手部材(10)のポペット(46)は、雄継手
部材(10)内へと押し込まれて弁座(24)より離れる。これ
により、継手を通して流体の流通を可能ならしめる。When the pressurized fluid is supplied only to the male joint member (10), the spring force pressing the poppet (46) in the male joint member (10) against the valve seat (22) is reinforced by the fluid pressure. Has been done. When the female joint member (12) is coupled to the male joint member (10), the poppet (48) in the female joint member (12) that is not pressurized is not mixed with the poppet (46) of the male joint member (10). ), It is pushed into the female joint member (12) and moved until its end face abuts against the end face of the spacer (70). The poppet (48) in the female joint member (12) cannot move beyond this position, so that the poppet (46) of the male joint member (10) is pushed into the male joint member (10). Away from the valve seat (24). This allows fluid to flow through the joint.

【００２８】本発明の範囲を逸脱することなく、各種の
応用が可能である。例えば各種々の構成要素が都合の良
い形状に製作されたり組み立てされたりすることが出来
る。また、本発明の継手は流体用に限定されるものでは
ない。Various applications are possible without departing from the scope of the invention. For example, each of the various components can be manufactured or assembled into any convenient shape. Also, the joints of the present invention are not limited to fluids.

【００２９】[0029]

【発明の効果】上述のように、本発明の急速解放流体用
継手（ワンタッチカップラ）は、最少の構成要素でもっ
て、高効率耐シール性継手を供給するものである。耐圧
強度は少なくとも６６８０kg／sq.cm （９５，０００lb
／sq.in ）である。既存弁と比較すると、上記の高圧を
受けるとき、ポペットは継手本体のシール効果が増加し
ている。過去において弁はそのような高圧（安全率に見
合う圧力）をかけるとその内部構成要素が破裂する傾向
にあった。本発明による継手は操作性が簡単で、手近に
あるスパナさえあれば良い。継手を分離する場合、例え
ば、流体源または工具から結合を解くとき、たとえ継手
の効率に多少の影響があるにしても、継手のどちらの側
からも漏れの発生はなく、継手の接触面の汚れもほとん
ど起きない。As described above, the quick release fluid coupling (one-touch coupler) of the present invention provides a highly efficient seal resistant joint with a minimum number of components. Compressive strength is at least 6680kg / sq.cm (95,000lb
/Sq.in). When compared to existing valves, the poppet has an increased sealing effect on the joint body when subjected to the above high pressure. In the past, valves have tended to rupture their internal components when subjected to such high pressures (pressures commensurate with safety factors). The joint according to the present invention is easy to operate and requires only a wrench at hand. When disconnecting a fitting, for example, when uncoupling from a fluid source or tool, there is no leakage from either side of the fitting, even if there is some impact on the efficiency of the fitting, and the contact surface of the fitting does not leak. Almost no dirt occurs.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の継手の縦断面図である。FIG. 1 is a vertical sectional view of a joint of the present invention.

【符号の説明】[Explanation of symbols]

(10)(12)：継手部材 (18)(20)：流体通路 (22)(24)：弁座 (46)(48)：弁体（逆止め弁） (72)(74)：突起（弁移動手段） (10) (12): Joint member (18) (20): Fluid passage (22) (24): Valve seat (46) (48): Disc (check valve) (72) (74): Protrusion ( Valve moving means)

Claims (7)

【特許請求の範囲】[Claims] 【請求項１】 一対の継手部材(10)(12)よりなり、各継
手部材(10)(12)は流体系に接続する手段、突き合わせ端
面でシールし得るように前記継手部材(10)(12)を保持す
る手段、そして前記継手部材(10)(12)が突き合わせ端面
同士相接する関係に設置されたとき、連通するようにな
された流体通路(18)(20)を有する流体用継手であって、
各流体通路(18)(20)に前記継手部材(10)(12)からの流体
の流出を防止する逆止め弁(46)(48)が備えられ、各逆止
め弁(46)(48)は、前記継手部材(10)(12)が結合されたと
き、そのシール位置から弁(46)(48)を移動させる手段(7
2)(74)を有していることを特徴とする流体用継手。1. A pair of joint members (10) (12), each joint member (10) (12) being a means for connecting to a fluid system, and the joint member (10) ( 12) means for holding, and a fluid coupling having fluid passages (18) (20) arranged to communicate with each other when the joint members (10) (12) are installed in a relationship where the abutting end faces are in contact with each other. And
Each fluid passage (18) (20) is provided with a check valve (46) (48) for preventing the outflow of fluid from the joint member (10) (12), and each check valve (46) (48) Is a means (7) for moving the valves (46) (48) from their sealing positions when the joint members (10) (12) are joined.
2) A fluid coupling characterized by having (74). 【請求項２】 継手部材(10)(12)を一体化するように保
持する手段は、一方の継手部材(12)に嵌装され他方の継
手部材(10)にネジ結合できる回転自在なネジ付きカラー
(30)からなり、ネジ付きカラー(30)を締め込むとき前記
継手部材(10)(12)の突き合わせ端面同士をより接近させ
ることが出来るようになっていることを特徴とする請求
項１記載の継手。2. A rotatable screw which is fitted to one joint member (12) and can be screwed to the other joint member (10) by means for holding the joint members (10) (12) in an integrated manner. With color
2. The structure according to claim 1, wherein the butt end surfaces of the joint members (10) and (12) can be brought closer to each other when the threaded collar (30) is tightened. Fittings. 【請求項３】 継手部材の突き合わせ端面にシール手段
(40)(42)(44)が設けられていることを特徴とする請求項
１または２項記載の継手。3. Sealing means on the abutting end surface of the joint member.
(40) (42) (44) is provided, The joint of Claim 1 or 2 characterized by the above-mentioned. 【請求項４】 前記シール手段は、一方の継手部材(12)
に設けられてＯリング(42)を収容する環状の凹部(40)
と、他方の継手部材(10)に設けられ前記凹部(40)に嵌ま
り込んで前記Ｏリング(42)を加圧する環状の凸部(44)と
からなることを特徴とする請求項３記載の継手。4. The sealing means is one joint member (12).
An annular recess (40) provided in the housing for accommodating the O-ring (42)
And an annular projection (44) provided on the other joint member (10) and fitted in the recess (40) to press the O-ring (42). Fittings. 【請求項５】 弁(46)(48)は、前記流体通路(18)(20)の
中を可動な弁体(46)(48)と、突き合わせ端面側開口(26)
(28)方向へ前記弁体(46)(48)を付勢する付勢手段(50)(5
2)と、弁体(46)(48)に設けられかつ継手部材(10)(12)に
形成された弁座(22)(24)に弁体(46)(48)が着座するとき
に弁座(22)(24)に係合して前記流路(18)(20)を閉鎖する
シール面(76)(78)と、弁体(46)(48)がその着座位置にあ
るとき継手部材(10)(12)の突き合わせ端面より突出する
突起(72)(74)とからなることを特徴とする請求項１、
２、３または４項記載の継手。5. A valve (46) (48) is a valve body (46) (48) movable in the fluid passages (18) (20), and an abutting end face side opening (26).
Biasing means (50) (5) for biasing the valve bodies (46) (48) in the (28) direction
2) and when the valve bodies (46) (48) are seated on the valve seats (22) (24) provided on the valve bodies (46) (48) and formed on the joint members (10) (12). When the seal faces (76) (78) that engage the valve seats (22) (24) to close the flow paths (18) (20) and the valve discs (46) (48) are in their seated positions. The joint member (10) (12) comprising a projection (72) (74) protruding from the abutting end face of the joint member,
Joint according to item 2, 3 or 4. 【請求項６】 前記継手部材(10)(12)の突き合わせ端面
側開口(26)(28)からあまり離れないように弁体(46)(48)
の動きを制限する停止手段(69)(70)が、流体通路(18)(2
0)内に設けられていることを特徴とする請求項１、２、
３、４または５項記載の継手。6. The valve body (46) (48) so as not to be too far from the abutting end face side openings (26) (28) of the joint members (10) (12).
Stop means (69) (70) for restricting the movement of the fluid passage (18) (2
0) provided in (1),
The joint according to item 3, 4 or 5. 【請求項７】 各弁体(46)(48)に、シール面(76)(78)か
ら突起(72)(74)とは反対側の端面に及ぶ流体通路(80)(8
2)(84)(86)が備わっていることを特徴とする請求項１、
２、３、４、５または６項記載の継手。7. A fluid passageway (80) (8) extending from the sealing surface (76) (78) to the end surface opposite to the projections (72) (74) in each valve body (46) (48).
2) (84) (86) is provided, Claim 1, characterized in that
The joint according to item 2, 3, 4, 5 or 6.