WO2013146989A1 - Female joint and fitting provided with same - Google Patents

Female joint and fitting provided with same Download PDF

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Publication number
WO2013146989A1
WO2013146989A1 PCT/JP2013/059195 JP2013059195W WO2013146989A1 WO 2013146989 A1 WO2013146989 A1 WO 2013146989A1 JP 2013059195 W JP2013059195 W JP 2013059195W WO 2013146989 A1 WO2013146989 A1 WO 2013146989A1
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WO
WIPO (PCT)
Prior art keywords
ball valve
male joint
joint
hole
rotation position
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PCT/JP2013/059195
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French (fr)
Japanese (ja)
Inventor
一憲 青木
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日東工器株式会社
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Publication of WO2013146989A1 publication Critical patent/WO2013146989A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/02—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
    • F16L27/04—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces
    • F16L27/047—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces held in place by a screwed member having an internal spherical surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
    • F16L37/38—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of the two pipe-end fittings
    • F16L37/47—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of the two pipe-end fittings with a tap or cock

Definitions

  • the present invention relates to a female joint and a pipe joint including the female joint, which can enhance the sealing performance when connected to a male joint.
  • FIG. 10 shows one type of conventional pipe joint.
  • the female joint 1 is provided with a ball valve 2, and after inserting the male joint 4 into the through hole 3 with the through hole 3 being inclined, The two joints are connected by coaxially aligning the male joint 4 with the female joint 1 while rotating the valve 2.
  • the seal ring 5 disposed in the ball valve 2 is slidably engaged with the distal end portion of the male joint 4 inserted into the ball valve 2, so that the male joint 4 and the ball valve are engaged. 2 is secured.
  • the present invention reduces the wear of the seal member due to the detachment of the male joint, improves the durability, and can easily apply the pressing load to the seal member required for sealing. It is an object to provide a joint and a pipe joint provided with such a female joint.
  • the present invention A female joint for detachably connecting a male joint having an engagement portion on the outer peripheral surface, A cylindrical joint body having a first through hole penetrating in a longitudinal direction from one end to the other end, and having a conduit connected to the one end;
  • the other of the joint body having a spherical outer surface, a valve body having a second through hole passing through the outer surface in the diameter direction, and an end face seal member disposed in the second through hole.
  • a ball valve disposed on an end side, wherein the second through hole includes a male joint insertion portion into which the male joint is inserted, and a front end of the male joint inserted into the male joint insertion portion.
  • An annular step portion that is adjacent to the surface, and a communication portion that extends in the opposite direction to the male joint insertion portion following the annular step portion and communicates with the third through hole of the inserted male joint.
  • the end face seal member is disposed in the annular step portion, and the male joint is inserted into the male joint insertion portion, so that the third through hole and the second of the male joint are inserted.
  • the casing member includes an insertion opening that allows the male joint to be inserted into the male joint insertion portion of the valve body of the ball valve at the first rotation position, and the male joint insertion portion.
  • the ball valve extends from the insertion port to allow movement of the male joint when the ball valve rotates between the first rotation position and the second rotation position with the male joint inserted.
  • An engaging edge that is slidably engaged with the engaging portion of the male joint is provided on both edges defining the slot opening.
  • the engagement edge portion is configured such that the ball valve into which the male joint is inserted is located at the second rotation position with respect to a distance from the boundary position with the insertion port at the engagement edge portion to the rotation center axis. The distance from the position that engages with the engaging portion to the rotation center axis is shorter when the engagement edge portion is engaged with the engaging portion at the second rotation position. Is pressed toward the rotational axis of the ball valve, and a front end surface of the male joint presses the end face seal member against the annular step portion.
  • the end face seal member for sealingly engaging the male joint and the ball valve is male between the annular step in the second through hole of the ball valve and the front end face of the male joint.
  • the end face seal member does not slide with the male joint because it is pressed in the insertion direction of the mold joint, and therefore wear is greatly reduced compared to the conventional sliding engagement type seal member. Durability can be improved.
  • the engagement portion is located more than the distance from the boundary position with the insertion port at the engagement edge of the slot opening to the rotation center axis.
  • the male joint when the ball valve into which the male joint is inserted is rotated from the first rotational position toward the second rotational position, the male joint at the engagement edge portion.
  • the distance from the portion engaged with the engaging portion to the rotation center axis of the ball valve increases as the ball valve rotates from the first rotation position toward the second rotation position.
  • the engagement edge may be curved so as to be shorter.
  • the engagement portion of the male joint is gradually pushed toward the rotation center axis of the ball valve.
  • the end face seal member is gradually pressed by the front end face of the male joint, so there is no need to push the male joint toward the ball valve in order to press the end face seal member.
  • the end face seal member is pressed, and the joint body and the ball valve can be hermetically engaged.
  • the curvature of the engagement edge portion may be an arc shape centering on a position closer to the joint body side than the rotation center axis of the ball valve in the longitudinal direction. .
  • the male joint can be rotated more smoothly.
  • the ball valve is a shaft portion extending from the valve body to the outside of the casing member along the rotation center axis, and is rotatably supported by the casing member and rotates together with the valve body. It has a shaft part that has a notch on its outer peripheral surface,
  • the female joint further includes a sleeve slidable in the longitudinal direction outside the casing member, When the ball valve is in the second rotation position, the sleeve can be engaged with the notch of the ball valve to prevent the ball valve from rotating.
  • the notch portion may have a fan-shaped cross section having a central angle of 90 degrees with the center of the shaft portion as a vertex.
  • the ball valve is a seal member holding member provided along a peripheral wall of the male joint insertion portion of the second through hole, and the end face seal member disposed on the annular step portion.
  • a shaft mounting member that is formed by recessing the outer surface of the valve body on the outer surface of the valve body.
  • the shaft portion is provided separately from the valve body, and an engagement portion provided at a proximal end portion of the shaft portion is engaged with the shaft mounting portion to It can be attached to the main body and engaged with the seal member holding member to lock the seal member holding member in the second through hole.
  • the end face seal member is held by the annular stepped portion by the seal member holding member, so that the shape of the second through hole including the annular stepped portion can be made relatively simple. It can be reliably held in the second through hole. Further, since the shaft portion is separate from the valve body, the operation of incorporating the ball valve into the casing member becomes relatively easy.
  • the present invention further includes A female joint as described above, A male joint inserted into the male joint insertion portion of the valve body of the ball valve in the first rotation position through an insertion port of the casing member, the ball valve being the first An engagement portion that is slidably engaged with the engagement edge portion of the casing member when rotated from one rotation position to the second rotation position, the second rotation position of the ball valve An engagement portion that is pressed toward the rotation center axis of the ball valve by the engagement edge, and a front end surface that is pressed by the end surface seal member at the second rotation position of the ball valve.
  • a male joint having A pipe joint is provided.
  • FIG. 9B is a side view of the purge suppressing member and ball valve of FIG. 9A.
  • the female joint 10 of the pipe joint 8 has a joint body 12, a ball valve 14, and a casing member 16 that holds the ball valve 14.
  • the joint body 12 is provided with a first through hole 22 penetrating in a longitudinal direction from one end 18 to the other end 20, and an outer peripheral surface of the one end 18 is connected to a conduit connected to a fluid supply source.
  • a male screw portion 24 is provided on the inner peripheral surface of the other end 20, an annular seal member 26 for sealingly engaging with the ball valve 14 is disposed coaxially with the first through hole 22.
  • An annular purge suppression member 28 is disposed on the radially outer side of the annular seal member 26 so as to contact the end surface of the other end 20 of the joint body 12.
  • the annular seal member 26 and the purge suppression member 28 are held in the casing member 16 together with the ball valve 14 disposed so as to be engaged with the annular seal member 26 and the purge suppression member 28.
  • the ball valve 14 has a spherical outer surface 30, a second through hole 32 that passes through the outer surface 30 in a diametrical direction, and a diameter orthogonal to the second through hole 32 on the outer surface 30.
  • a valve main body 36 having two shaft mounting portions 34 provided, an annular end face seal member 40 disposed in an annular step portion 38 provided in the second through hole 32, and a second through hole of the valve main body 36.
  • the second through-hole 32 is configured to receive the male joint 62 such that the front end face 68 is in sealing engagement with the end face of the end face seal member 40.
  • the shaft attachment portion 34 is formed by being recessed in the spherical outer surface 30 of the valve body 36, and is provided with a central flat portion 34-1 and steps provided so as to extend in parallel with the second through holes 32 on both sides thereof. And 34-2.
  • the central plane portion 34-1 extends from one end of the valve body 36 to the end wall 34-3 that is formed in a planar shape parallel to the second through hole 32 so that the spherical outer surface 30 remains. It extends.
  • “concave” means to make a recess from the spherical outer surface 30 in the radial direction, and includes not only making a groove but also chamfering in a planar shape.
  • the shaft portion 44 has a substantially circular flange 50 at the base end portion thereof, and an engaging portion 50-1 fitted to the central flat portion 34-1 of the shaft attachment portion 34 is provided at the end surface thereof. And a pair of engaging protrusions 50-2 extending parallel to the second through hole 32 and engaged with the stepped portion 34-2 of the shaft mounting portion 34 are left on both sides thereof, A locking projection 50-3 remains at one axial end of the engaging portion 50-1.
  • the engaging portion 50-1 is also engaged with an engaging rib 48 provided at one end periphery of the seal member holding member 42, and the locking projection 50-3 locks the engaging rib 48 to hold the seal member.
  • the member 42 is held so as not to move in the insertion direction.
  • the shaft portion 44 is rotatably supported by the shaft engaging hole 52 of the casing member 16, and a rotation center axis 56 passing through the two shaft portions 44 between the joint body 12 and the casing member 16 is provided. It can be rotated around.
  • a sleeve 58 and a spring 60 for urging the sleeve 58 in a direction to engage with the shaft portion 44 in order to prevent rotation of the ball valve 14 described in detail later. Is provided.
  • the two shaft portions 44 are respectively arranged from the inside of the casing member 16 so as to pass through the respective shaft engagement holes 52, and the end face seal member 40 and the seal member are arranged.
  • the holding member 42 is inserted and disposed in the second through hole 32.
  • the valve main body 36 in this state is engaged with the end face seal member 40 and the seal member holding member 42 so that the central flat portion 34-1 of the shaft attachment portion 34 is engaged in the engagement portion 50-1. It is inserted into the casing member 16. At this time, the engaging rib 48 of the seal member holding member 42 is locked by the locking protrusion 50-3 of the shaft portion 44.
  • the joint body 12 to which the annular seal member 26 and the purge suppressing member 28 are attached is screw-engaged with the casing member 16, and the annular seal member 26 is sealingly engaged with the spherical outer surface 30 of the valve body 36. Attach as shown. At this time, a gap is formed between the spherical inner surface 54 of the purge suppressing member 28 and the spherical outer surface 30 of the valve body 36 without contact. This simple assembly is possible because the shaft portion 44 is a separate member.
  • the male joint 62 has a tubular shape as a whole, and an annular engaging portion 70 is recessed in the outer peripheral surface thereof.
  • the direction of the second through hole 32 of the ball valve 14 is about 60 degrees with respect to the longitudinal direction of the joint body 12.
  • the male joint 62 is inserted into the second through hole 32 of the ball valve 14 through the insertion port 64 of the casing member 16. Insert inside.
  • the outer peripheral surface of the distal end portion of the male joint 62 is in contact with the inner peripheral surface of the seal member holding member 42 inserted into the male joint insertion portion 66 of the second through-hole 32, and the front end surface 68 is the end surface seal member. 40.
  • the other end 20 side of the first through hole 22 of the joint body 12 is sealed by the outer surface 30 of the ball valve 14 and the annular seal member 26, so that the fluid in the first through hole 22 does not leak to the outside. Yes.
  • the concave engagement portion 70 provided on the outer peripheral surface of the male joint 62 defines the slot opening 72 of the casing member 16.
  • the mold joint 10 and the male joint 62 are connected to each other, and the other end 20 of the joint body 12 and the outer surface 30 of the ball valve 14 are sealed and engaged with the annular seal member 26.
  • the communication part 67 of the 2 through-hole 32 communicates.
  • the front end surface 68 of the male joint 62 and the annular stepped portion 38 of the ball valve 14 are in sealing engagement with the end surface seal member 40, as will be described later.
  • the three through holes 76 are in communication with each other. That is, in the connected state, the first, second, and third through holes 22, 32, and 76 communicate with each other, and the through holes are sealed to the outside by the two seal members 26 and 40. .
  • the end face seal member 40 needs to be pressed between the front end face 68 and the annular step portion 38 to be crushed to some extent and brought into close contact with the front end face 68 and the annular step portion 38. This is done by rotating the male joint 62 from the attachable / detachable state to the connected state by the structure shown below.
  • the male joint 62 rotates from the detachable state (FIG. 3A) to the connected state (FIG. 3E) while the engaging portion 70 is slidingly engaged with the engaging edge 74 of the slot opening 72 of the casing member 16. It comes to move.
  • the portion from the boundary portion 78 to the insertion port 64 to the position 82 where the longitudinal axis 80 intersects the drawing portion is the arcuate curved portion 84.
  • the curved portion 84 has such a curvature that the center 57 of the arc is located farther (on the left side in the drawing) on the longitudinal axis than the rotation center axis 56 of the ball valve 14. That is, the center of rotation from the position 82 where the engagement portion 70 of the male joint 62 engages in the connected state is greater than the distance L1 from the boundary portion 78 of the engagement edge 74 to the insertion port 64 to the rotation center axis 56.
  • the distance L2 to the axis 56 is shorter. Therefore, as the male joint 62 is rotated from the attachable / detachable state to the connected state, the engaging portion 70 of the male joint 62 engaged with the engaging edge portion 74 is moved to the rotation center axis 56 of the ball valve 14. As a result, the front end face 68 of the male joint 62 gradually presses the end face seal member 40. Therefore, the rotation of the male joint 62 between the front end surface 68 of the male joint 62 and the annular step portion 38 of the ball valve 14 is performed without rotating the male joint 62 toward the end face seal member 40. A sealing engagement is possible.
  • the engagement edge 74 has an arcuate curve, but the curve does not necessarily have an arcuate shape.
  • the shaft portion 44 of the ball valve 14 includes two straight lines 86-1 extending inward from the outer periphery of the shaft portion 44 and intersecting at right angles, and the outer periphery of the shaft portion. And a notch 86 having a fan-shaped cross section with a central angle of 90 degrees with a point on the rotation center axis or the vicinity thereof as a vertex.
  • an engagement groove 88 extending in the sliding direction of the sleeve 58 is provided on the inner peripheral surface of the circular sleeve 58.
  • the front end surface 59 of the sleeve 58 is in contact with the arc-shaped outer peripheral surface of the shaft portion 44, so that the rotation of the ball valve 14 is not limited.
  • the notch portion 86 of the shaft portion 44 and the engagement groove 88 of the sleeve 58 can be engaged with each other, and the spring 60 is biased toward the shaft portion 44.
  • the sleeve 58 is advanced until the front end surface 59 of the sleeve 58 is engaged with the notch 86 of the shaft portion 44, and is in a state of preventing rotation shown in FIG.
  • the male joint 62 is rotated from the connected state shown in FIG. 3E to the detachable state shown in FIG. .
  • the pressurized fluid existing inside the joint is gradually discharged to the outside.
  • the purge suppressing member 28 has an annular lip portion 92 that engages along the outer surface 30 of the ball valve 14.
  • the shaft mounting portions 34 are provided on the spherical outer surface 30 of the valve main body 36, and the stepped portions 34 recessed in the outer surface 30 are provided on both sides of each shaft mounting portion 34. -2 is formed, so that a total of four stepped portions 34-2 are formed.
  • the lip portion 92 is disposed so as to pass over two of the four stepped portions 34-2, as shown in FIGS. 9A and 9B.
  • the ball valve 14 When the ball valve 14 is in the second rotation position, the ball valve 14 is arranged so as to pass over all four stepped portions 34-2. That is, the lip portion 92 of the purge suppressing member 28 has four stepped portions 34-2 formed on the ball valve 14 when the ball valve 14 is between the first rotation position and the second rotation position. And a minute gap 96 is always formed between the lip portion 92 and the ball valve 14.
  • the lip portion 92 and the outer surface 30 of the ball valve 14 are engaged but not sealed, and a gap is formed. Therefore, the pressurized fluid is discharged not only from the minute gap 96 but also from the gap between the lip portion 92 and the outer surface 30 of the ball valve 14.
  • the male joint 62 is further rotated to reach the state shown in FIG. 3B to FIG. 3A, the engagement between the lip portion 92 and the ball valve 14 is also partially released. In this state, the purge release port 98 is directly communicated without passing through 96.
  • the flow path on the male joint 62 side is released to the atmosphere after the sealing engagement between the joint body 12 and the ball valve 14 is partially released.
  • the internal fluid is gradually discharged at a relatively small flow rate by the restricted flow path composed of the minute gap 96.
  • the internal fluid pressure can be gradually lowered, so that high-pressure fluid can be prevented from being released to the atmosphere at once, and thereby noise during fluid discharge can be greatly reduced.
  • the lip portion 92 when the lip portion 92 is not provided, the first through hole 22 of the joint body 12 passes through the restriction channel at a relatively early stage when the male joint 62 is rotated from the connected state to the detachable state. Since there is no direct communication with the purge release port 98, a large amount of fluid on the first through-hole 22 side (fluid supply source side) may be released into the atmosphere. However, the presence of the lip portion 92 makes it possible to reduce the amount of discharge and contributes to energy saving.
  • a rubber material is employed as a material for the annular seal member 26 and the end surface seal member 40 in order to obtain high sealing performance, and a high slidability with the ball valve 14 is obtained as a material for the purge suppression member 28. Therefore, a resin material that is harder and has a lower friction characteristic than the rubber material of the seal members 26 and 40 is employed.
  • a minute gap 96 as a restriction channel is formed between the stepped portion 34-2 formed by the shaft mounting portion 34 of the valve body 36 and the lip portion 92 of the purge suppressing member 28.
  • a minute gap may be formed by providing another groove at a different position on the outer surface 30 of the valve body 36, or a recess may be provided on the lip portion 92 side to provide a space between the ball valve and the ball valve 36.
  • a minute gap may be formed.
  • the ball valve and the purge suppression member are not provided with a recess, but an appropriate clearance is formed between the lip portion 92 of the purge suppression member 28 and the outer surface 30 of the ball valve 14. May be a restricted flow path.
  • the first and second through holes 22 and 32 have a relatively large diameter so that a large flow rate can flow, whereby the first through hole 22 passes through the restriction channel in the state of FIG. 3B.
  • the first and second through-holes 22 and 32 are reduced in diameter, for example, before the purge suppression member 28 is disengaged. 22 is sealed by the outer surface 30 of the ball valve 14 so that the first through hole 22 does not communicate with the purge release port 98 without passing through the restriction flow path, and the first through hole 22 side. It is also possible to further reduce the amount released from the.

Abstract

[Problem] To reduce the wear on a sealing member that seals the interval between a female joint and a male joint. [Solution] An end surface-sealing member is arranged in an annular step section within a through hole in a ball valve that is rotatably supported in a casing member around a central axis of rotation, and the front end surface of a male joint that is inserted in the through hole presses the end surface-sealing member. When a female joint is inserted in the through hole, rotates around the central axis of rotation along a slot opening in the casing member, and is placed in a mounting position for the female joint, engaging edges on both sides of the slot opening that engage with the female joint slide into engagement with the female joint, and press the female joint gradually in the direction of the end surface-sealing member. When the female joint is in the mounting position, the front edge surface of the female joint presses the end surface-sealing member toward the annular step section so that the interval between the ball valve and the male joint is sealed in an engaged manner.

Description

雌型継手及び該雌型継手を備える管継手Female joint and pipe joint including the female joint
　本発明は、雄型継手との連結の際のシール性を高めることを可能とする雌型継手及び該雌型継手を備える管継手に関する。 [Technical Field] The present invention relates to a female joint and a pipe joint including the female joint, which can enhance the sealing performance when connected to a male joint.
　図１０は、従来の管継手の一つの形式を示している。該管継手では、雌型継手１がボールバルブ２を備えており、該ボールバルブ２をその貫通孔３を斜めにした状態で、同貫通孔内に雄型継手４を挿入した後、同ボールバルブ２を回動しながら当該雄型継手４を、雌型継手１と共軸状に整合するようにして、両継手の連結を行うようになっている。（例えば、特開２００２－１６８３８７号参照） FIG. 10 shows one type of conventional pipe joint. In the pipe joint, the female joint 1 is provided with a ball valve 2, and after inserting the male joint 4 into the through hole 3 with the through hole 3 being inclined, The two joints are connected by coaxially aligning the male joint 4 with the female joint 1 while rotating the valve 2. (See, for example, JP-A-2002-168387)
　この管継手においては、ボールバルブ２内に配置されたシールリング５が、ボールバルブ２内へと挿入される雄型継手４の先端部分と摺動係合して、雄型継手４とボールバルブ２との間のシールを確保するようになっている。 In this pipe joint, the seal ring 5 disposed in the ball valve 2 is slidably engaged with the distal end portion of the male joint 4 inserted into the ball valve 2, so that the male joint 4 and the ball valve are engaged. 2 is secured.
　しかしながら、摺動係合させる際にはシールリングに大きな摩擦力が作用するため、雄型継手の脱着を繰り返し行うとシール部材が摩耗してしまうという問題があった。 However, since a large frictional force acts on the seal ring during sliding engagement, there is a problem that the seal member is worn if the male joint is repeatedly detached and attached.
　本発明は、上記問題に鑑みて、雄型継手の脱着によるシール部材の摩耗を低減して耐久性を向上させるとともに、シールに要するシール部材への押圧荷重を簡易に負荷できるようにした雌型継手及びそのような雌型継手を備えた管継手を提供することを目的とする。 In view of the above problems, the present invention reduces the wear of the seal member due to the detachment of the male joint, improves the durability, and can easily apply the pressing load to the seal member required for sealing. It is an object to provide a joint and a pipe joint provided with such a female joint.
　すなわち本発明は、
　外周面に係合部を有する雄型継手を着脱可能に連結する雌型継手であって、
　一端から他端まで長手方向に貫通する第１貫通孔を有し、前記一端に導管が接続される筒状の継手本体と、
　球面状の外表面、及び該外表面を通り直径方向で貫通する第２貫通孔を有するバルブ本体と、前記第２貫通孔内に配置された端面シール部材とを有する、前記継手本体の前記他端側に配置されたボールバルブであって、前記第２貫通孔が、前記雄型継手が挿入される雄型継手挿入部と、該雄型継手挿入部に挿入された前記雄型継手の前端面に隣接して対向する環状段部と、該環状段部に続いて前記雄型継手挿入部とは反対方向に延び、挿入された該雄型継手の第３貫通孔と連通される連通部とを有しており、前記端面シール部材は、前記環状段部に配置され、前記雄型継手挿入部に前記雄型継手が挿入されて前記雄型継手の前記第３貫通孔と前記第２貫通孔の前記連通部とが連通状態とされたときに、前記雄型継手の前端面が当接して前記前端面と前記環状段部との間をシールするようにされている、ボールバルブと、
　前記継手本体に対して固定されたケーシング部材であって、前記ボールバルブを、前記バルブ本体の前記外表面によって前記第１貫通孔の前記他端側を封止する第１回動位置と、前記第２貫通孔を前記第１貫通孔に前記長手方向で整合して連通する第２回動位置との間において該バルブ本体の中心を通る回転中心軸線周りで回転可能に保持するケーシング部材と、を備えており、
　前記ケーシング部材は、前記第１回動位置にある前記ボールバルブの前記バルブ本体の前記雄型継手挿入部に前記雄型継手を挿入することを許容する挿入口と、前記雄型継手挿入部に前記雄型継手が挿入された状態で前記ボールバルブが前記第１回動位置と第２回動位置との間で回動するときに該雄型継手の動きを許容する、前記挿入口から延びるスロット開口部とを有し、該スロット開口部を画定する両側の縁には、前記雄型継手の前記係合部と摺動係合する係合縁部が設けられており、
　前記係合縁部は、該係合縁部における前記挿入口との境界位置から前記回転中心軸までの距離よりも、前記雄型継手が挿入された前記ボールバルブが前記第２回動位置とされたときに前記係合部と係合する位置から前記回転中心軸までの距離の方が短くなるようになっており、前記第２回動位置において、前記係合縁部が前記係合部を当該ボールバルブの前記回転中心軸線に向けて押圧し、前記雄型継手の前端面が前記端面シール部材を前記環状段部に押圧するようにされている、雌型継手を提供する。 That is, the present invention
A female joint for detachably connecting a male joint having an engagement portion on the outer peripheral surface,
A cylindrical joint body having a first through hole penetrating in a longitudinal direction from one end to the other end, and having a conduit connected to the one end;
The other of the joint body having a spherical outer surface, a valve body having a second through hole passing through the outer surface in the diameter direction, and an end face seal member disposed in the second through hole. A ball valve disposed on an end side, wherein the second through hole includes a male joint insertion portion into which the male joint is inserted, and a front end of the male joint inserted into the male joint insertion portion. An annular step portion that is adjacent to the surface, and a communication portion that extends in the opposite direction to the male joint insertion portion following the annular step portion and communicates with the third through hole of the inserted male joint. And the end face seal member is disposed in the annular step portion, and the male joint is inserted into the male joint insertion portion, so that the third through hole and the second of the male joint are inserted. When the communication portion of the through hole is in communication with the front end surface of the male joint, Between surface and the annular step portion being adapted to seal a ball valve,
A casing member fixed to the joint body, wherein the ball valve is sealed at the other end side of the first through hole by the outer surface of the valve body; A casing member that holds the second through hole rotatably around a rotation center axis passing through the center of the valve body between the second through position and the second rotation position that communicates with the first through hole in the longitudinal direction; With
The casing member includes an insertion opening that allows the male joint to be inserted into the male joint insertion portion of the valve body of the ball valve at the first rotation position, and the male joint insertion portion. The ball valve extends from the insertion port to allow movement of the male joint when the ball valve rotates between the first rotation position and the second rotation position with the male joint inserted. An engaging edge that is slidably engaged with the engaging portion of the male joint is provided on both edges defining the slot opening.
The engagement edge portion is configured such that the ball valve into which the male joint is inserted is located at the second rotation position with respect to a distance from the boundary position with the insertion port at the engagement edge portion to the rotation center axis. The distance from the position that engages with the engaging portion to the rotation center axis is shorter when the engagement edge portion is engaged with the engaging portion at the second rotation position. Is pressed toward the rotational axis of the ball valve, and a front end surface of the male joint presses the end face seal member against the annular step portion.
　この雌型継手においては、雄型継手とボールバルブとを密封係合するための端面シール部材が、ボールバルブの第２貫通孔内の環状段部と雄型継手の前端面との間において雄型継手の挿入方向で押圧されるようになっているので、端面シール部材が雄型継手と摺動せず、従って、従来の摺動係合型のシール部材と比べて摩耗を大きく低減して耐久性を向上させることが可能となる。また、スロット開口部の係合縁部における挿入口との境界位置から回転中心軸までの距離よりも、雄型継手が挿入されたボールバルブが第２回動位置とされたときに係合部と係合する位置から回転中心軸までの距離の方が短くなるようになっており、第２回動位置において雄型継手の前端面が端面シール部材を環状段部に十分に押圧してシールを形成するようにされているので、第２回動位置以外では端面シール部材の押圧を密封係合を形成するほどに大きくしないようにすることができる。これにより、回動途中までの端面シール部材からの反力が小さくなるので、雄型継手の係合部とスロット開口部の係合縁部との摺動摩擦が小さくなり、雄型継手を回動させる際の荷重を第２回動位置に至る途中までの間小さくすることが可能となる。 In this female joint, the end face seal member for sealingly engaging the male joint and the ball valve is male between the annular step in the second through hole of the ball valve and the front end face of the male joint. The end face seal member does not slide with the male joint because it is pressed in the insertion direction of the mold joint, and therefore wear is greatly reduced compared to the conventional sliding engagement type seal member. Durability can be improved. Further, when the ball valve into which the male joint is inserted is set to the second rotation position, the engagement portion is located more than the distance from the boundary position with the insertion port at the engagement edge of the slot opening to the rotation center axis. The distance from the position engaged with the rotation center axis becomes shorter, and the front end surface of the male joint sufficiently presses the end surface seal member against the annular step portion at the second rotation position to seal Therefore, it is possible to prevent the end surface seal member from being pressed so much as to form the sealing engagement except in the second rotation position. As a result, the reaction force from the end face seal member until the middle of rotation is reduced, so that the sliding friction between the engagement portion of the male joint and the engagement edge of the slot opening is reduced, and the male joint is rotated. It is possible to reduce the load at the time of making the load halfway to the second rotation position.
　具体的には、前記雄型継手が挿入された前記ボールバルブが前記第１回動位置から前記第２回動位置に向かって回動されるときに、前記係合縁部における前記雄型継手の前記係合部と係合している部分から前記ボールバルブの前記回転中心軸線までの距離が、前記ボールバルブが前記第１回動位置から前記第２回動位置に向かって回動するに従って短くなるように、前記係合縁部が湾曲しているようにすることができる。 Specifically, when the ball valve into which the male joint is inserted is rotated from the first rotational position toward the second rotational position, the male joint at the engagement edge portion. The distance from the portion engaged with the engaging portion to the rotation center axis of the ball valve increases as the ball valve rotates from the first rotation position toward the second rotation position. The engagement edge may be curved so as to be shorter.
　ボールバルブが第１回動位置から第２回動位置へと向かう方向に雄型継手を回動することにより、雄型継手の係合部が徐々にボールバルブの回転中心軸線に向かって押されて、端面シール部材が雄型継手の前端面によって徐々に押圧されるようになるので、端面シール部材を押圧するために雄型継手をボールバルブに向かって押す操作が必要なく、雄型継手を回動させるだけで、端面シール部材が押圧されて継手本体とボールバルブとが密封係合されるようにすることが可能となる。 By rotating the male joint in the direction from the first rotational position to the second rotational position, the engagement portion of the male joint is gradually pushed toward the rotation center axis of the ball valve. Thus, the end face seal member is gradually pressed by the front end face of the male joint, so there is no need to push the male joint toward the ball valve in order to press the end face seal member. By simply rotating, the end face seal member is pressed, and the joint body and the ball valve can be hermetically engaged.
　より具体的には、前記係合縁部の前記湾曲が、前記長手方向で前記ボールバルブの前記回転中心軸線よりも前記継手本体側の位置を中心とする円弧状であるようにすることができる。 More specifically, the curvature of the engagement edge portion may be an arc shape centering on a position closer to the joint body side than the rotation center axis of the ball valve in the longitudinal direction. .
　係合縁部の湾曲が円弧状となっているので、雄型継手をより円滑に回動させることが可能となる。 Since the engagement edge is curved in an arc, the male joint can be rotated more smoothly.
　好ましくは、前記ボールバルブは、前記回転中心軸線に沿って前記バルブ本体から前記ケーシング部材の外側にまで延在するシャフト部であって、前記ケーシング部材に回転可能に支持されて該バルブ本体とともに回動し、その外周面に切欠き部を有するシャフト部を備えており、
　当該雌型継手は更に、前記ケーシング部材の外側に、前記長手方向に摺動可能なスリーブを備えており、
　前記ボールバルブが前記第２回動位置にあるときに、前記スリーブが前記ボールバルブの前記切欠き部に係合して、前記ボールバルブが回動するのを防止するようにすることができる。 Preferably, the ball valve is a shaft portion extending from the valve body to the outside of the casing member along the rotation center axis, and is rotatably supported by the casing member and rotates together with the valve body. It has a shaft part that has a notch on its outer peripheral surface,
The female joint further includes a sleeve slidable in the longitudinal direction outside the casing member,
When the ball valve is in the second rotation position, the sleeve can be engaged with the notch of the ball valve to prevent the ball valve from rotating.
　このような構成により、当該雌型継手に雄型継手が接続されてボールバルブが第２回動位置にあるときに、雄型継手と共にボールバルブが第１回動位置に向かって誤って回動し、雄型継手との連結が外れてしまうことを防止することが可能となる。 With such a configuration, when the male joint is connected to the female joint and the ball valve is in the second rotational position, the ball valve is erroneously rotated together with the male joint toward the first rotational position. In addition, it is possible to prevent the connection with the male joint from being disconnected.
　具体的には、前記切欠き部は、前記シャフト部の中心を頂点とする中心角９０度の扇形状横断面を有するようにすることができる。 Specifically, the notch portion may have a fan-shaped cross section having a central angle of 90 degrees with the center of the shaft portion as a vertex.
　このような形状とすることで、スリーブとの係合面積を大きくし、係合をより確実なものとすることが可能となる。 By adopting such a shape, it is possible to increase the engagement area with the sleeve and to ensure engagement.
　また、好ましくは、前記ボールバルブが、前記第２貫通孔の前記雄型継手挿入部の周壁に沿って設けられたシール部材保持部材であって、前記環状段部に配置された前記端面シール部材と係合して該端面シール部材を前記環状段部上に保持するシール部材保持部材を備えており、前記バルブ本体の前記外表面には、該外表面に凹設して作られたシャフト取付部が設けられており、前記シャフト部は、前記バルブ本体とは別体に設けられ、該シャフト部の基端部分に設けられた係合部を、前記シャフト取付部に係合して前記バルブ本体に取り付けられると共に、前記シール部材保持部材と係合して前記シール部材保持部材を前記第２貫通孔内に係止するようにすることができる。 Preferably, the ball valve is a seal member holding member provided along a peripheral wall of the male joint insertion portion of the second through hole, and the end face seal member disposed on the annular step portion. And a shaft mounting member that is formed by recessing the outer surface of the valve body on the outer surface of the valve body. The shaft portion is provided separately from the valve body, and an engagement portion provided at a proximal end portion of the shaft portion is engaged with the shaft mounting portion to It can be attached to the main body and engaged with the seal member holding member to lock the seal member holding member in the second through hole.
　端面シール部材をシール部材保持部材によって環状段部に保持されるようにすることで、環状段部を含む第２貫通孔の形状を比較的に単純に加工できる形状としつつも、端面シール部材を確実に第２貫通孔内に保持できるようになる。また、シャフト部がバルブ本体とは別体となっていることで、ボールバルブをケーシング部材内に組み込む作業が比較的に容易になる。 The end face seal member is held by the annular stepped portion by the seal member holding member, so that the shape of the second through hole including the annular stepped portion can be made relatively simple. It can be reliably held in the second through hole. Further, since the shaft portion is separate from the valve body, the operation of incorporating the ball valve into the casing member becomes relatively easy.
　本発明は更に、
　上記の如き雌型継手と、
　前記第１回動位置にある前記ボールバルブの前記バルブ本体の前記雄型継手挿入部に前記ケーシング部材の挿入口を通して挿入されるようにされた雄型継手であって、前記ボールバルブが前記第１回動位置から前記第２回動位置に回動されるときに前記ケーシング部材の前記係合縁部と摺動係合する係合部であって、前記ボールバルブの前記第２回動位置において、前記係合縁部によって前記ボールバルブの前記回転中心軸線に向けて押圧される係合部と、前記ボールバルブの前記第２回動位置において、前記端面シール部材に押圧される前端面と、を有する雄型継手と、
　からなる管継手を提供する。 The present invention further includes
A female joint as described above,
A male joint inserted into the male joint insertion portion of the valve body of the ball valve in the first rotation position through an insertion port of the casing member, the ball valve being the first An engagement portion that is slidably engaged with the engagement edge portion of the casing member when rotated from one rotation position to the second rotation position, the second rotation position of the ball valve An engagement portion that is pressed toward the rotation center axis of the ball valve by the engagement edge, and a front end surface that is pressed by the end surface seal member at the second rotation position of the ball valve. A male joint having
A pipe joint is provided.
　以下、本発明に係る雌型継手及び該雌型継手を備える管継手の実施形態を添付した図面に基づき説明する。 Hereinafter, embodiments of a female joint and a pipe joint including the female joint according to the present invention will be described with reference to the accompanying drawings.
雌型継手と雄型継手とが連結された状態の本発明に係る管継手の側面断面図である。It is side surface sectional drawing of the pipe joint which concerns on this invention in the state in which the female type | mold joint and the male type | mold joint were connected.
本発明に係る雌型継手の分解斜視図である。It is a disassembled perspective view of the female type joint which concerns on this invention.
雄型継手を着脱可能とした状態の本発明に係る管継手の側面断面図である。It is side surface sectional drawing of the pipe joint which concerns on this invention of the state which made the male type | mold joint removable.
図３Ａの状態から雄型継手を回動させた状態の本発明に係る管継手の側面断面図である。It is side surface sectional drawing of the pipe joint which concerns on this invention of the state which rotated the male type | mold joint from the state of FIG. 3A.
図３Ｂの状態から雄型継手を回動させた状態の本発明に係る管継手の側面断面図である。It is side surface sectional drawing of the pipe joint which concerns on this invention of the state which rotated the male coupling from the state of FIG. 3B.
図３Ｃの状態から雄型継手を回動させた状態の本発明に係る管継手の側面断面図である。It is side surface sectional drawing of the pipe joint which concerns on this invention of the state which rotated the male type | mold joint from the state of FIG. 3C.
図３Ｄの状態から雄型継手を回動させて、雄型継手を連結した状態の本発明に係る管継手の側面断面図である。It is side surface sectional drawing of the pipe joint which concerns on this invention of the state which rotated the male coupling from the state of FIG. 3D, and connected the male coupling.
ケーシング部材の側面断面図である。It is side surface sectional drawing of a casing member.
雄型継手が着脱可能状態に管継手の斜視図である。It is a perspective view of a pipe joint in the state where a male joint is removable.
雄型継手が連結されたときの管継手の斜視図である。It is a perspective view of a pipe joint when a male type joint is connected.
連結状態においてボールバルブが回動防止状態とされている管継手の斜視図である。It is a perspective view of a pipe joint in which a ball valve is in a rotation prevention state in a connected state.
パージ抑制部材と第１回動位置にあるボールバルブの斜視図である。It is a perspective view of a purge valve and a ball valve in the 1st rotation position.
図８Ａのパージ抑制部材とボールバルブの側面図である。It is a side view of the purge suppression member and ball valve of FIG. 8A.
パージ抑制部材と第２回動位置にあるボールバルブの斜視図である。It is a perspective view of a purge valve and a ball valve in the 2nd rotation position.
図９Ａのパージ抑制部材とボールバルブの側面図である。FIG. 9B is a side view of the purge suppressing member and ball valve of FIG. 9A.
従来の管継手を示す図である。It is a figure which shows the conventional pipe joint.
　図１及び図２に示すように、本発明に係る管継手８の雌型継手１０は、継手本体１２と、ボールバルブ１４と、該ボールバルブ１４を保持するケーシング部材１６とを有している。継手本体１２には、一端１８から他端２０まで長手方向に貫通する第１貫通孔２２が設けられており、該一端１８の外周面には、流体供給源へと繋がる導管を接続するための雄ねじ部２４が設けられている。他端２０の内周面にはボールバルブ１４との間を密封係合するための環状シール部材２６が第１貫通孔２２に対して同軸状に配置されている。また、環状シール部材２６の半径方向外側には継手本体１２の他端２０の端面に当接するようにして環状のパージ抑制部材２８が配置されている。環状シール部材２６及びパージ抑制部材２８は、該環状シール部材２６及びパージ抑制部材２８に係合して配置されるボールバルブ１４とともにケーシング部材１６内に保持されている。ボールバルブ１４は、球面状の外表面３０、該外表面３０を通り直径方向で貫通している第２貫通孔３２、及び、該第２貫通孔３２に直交する直径上で外表面３０上に設けられた２つのシャフト取付部３４を有するバルブ本体３６と、第２貫通孔３２内に設けられた環状段部３８に配置される環状の端面シール部材４０と、バルブ本体３６の第２貫通孔３２内に挿入されて端面シール部材４０の端面外周部分と係合して端面シール部材４０を環状段部３８に押圧保持するシール部材保持部材４２と、２つのシャフト取付部３４にそれぞれ係合保持される２つのシャフト部４４とからなる。第２貫通孔３２は、雄型継手６２をその前端面６８が端面シール部材４０の端面と密封係合するようにして受け入れるようになっている。 As shown in FIGS. 1 and 2, the female joint 10 of the pipe joint 8 according to the present invention has a joint body 12, a ball valve 14, and a casing member 16 that holds the ball valve 14. . The joint body 12 is provided with a first through hole 22 penetrating in a longitudinal direction from one end 18 to the other end 20, and an outer peripheral surface of the one end 18 is connected to a conduit connected to a fluid supply source. A male screw portion 24 is provided. On the inner peripheral surface of the other end 20, an annular seal member 26 for sealingly engaging with the ball valve 14 is disposed coaxially with the first through hole 22. An annular purge suppression member 28 is disposed on the radially outer side of the annular seal member 26 so as to contact the end surface of the other end 20 of the joint body 12. The annular seal member 26 and the purge suppression member 28 are held in the casing member 16 together with the ball valve 14 disposed so as to be engaged with the annular seal member 26 and the purge suppression member 28. The ball valve 14 has a spherical outer surface 30, a second through hole 32 that passes through the outer surface 30 in a diametrical direction, and a diameter orthogonal to the second through hole 32 on the outer surface 30. A valve main body 36 having two shaft mounting portions 34 provided, an annular end face seal member 40 disposed in an annular step portion 38 provided in the second through hole 32, and a second through hole of the valve main body 36. 32, the seal member holding member 42 that engages with the outer peripheral portion of the end face of the end face seal member 40 and presses and holds the end face seal member 40 on the annular step portion 38, and the two shaft mounting portions 34 are engaged and held. The two shaft portions 44 are formed. The second through-hole 32 is configured to receive the male joint 62 such that the front end face 68 is in sealing engagement with the end face of the end face seal member 40.
　シャフト取付部３４は、バルブ本体３６の球面状の外表面３０に凹設して作られ、中央平面部３４－１と、その両側に第２貫通孔３２と平行に延びるように設けられた段状部３４－２とを有している。中央平面部３４－１は、バルブ本体３６の一端から第２貫通孔３２に平行に平面状に凹設されて、球面状の外表面３０が残るようにして形成された端壁３４－３まで延びている。ここで「凹設」とは、球面状の外表面３０から半径方向に凹むように作ることをいい、溝を作ることは勿論、平面状に面取りをすることも含まれる。シャフト部４４は、その基端部分に、ほぼ円形のフランジ５０を有しており、その端面には、シャフト取付部３４の上記中央平面部３４－１に嵌合される係合部５０－１が凹設され、その両側には第２貫通孔３２と平行に延びてシャフト取付部３４の段状部３４－２と係合される一対の係合突起５０－２が残され、また、該係合部５０－１の一方の軸方向端部には係止突起５０－３が残されている。該係合部５０－１は、シール部材保持部材４２の一端周縁に設けられた係合リブ４８とも係合して、係止突起５０－３が係合リブ４８を係止してシール部材保持部材４２を挿入方向で動かないように保持する。 The shaft attachment portion 34 is formed by being recessed in the spherical outer surface 30 of the valve body 36, and is provided with a central flat portion 34-1 and steps provided so as to extend in parallel with the second through holes 32 on both sides thereof. And 34-2. The central plane portion 34-1 extends from one end of the valve body 36 to the end wall 34-3 that is formed in a planar shape parallel to the second through hole 32 so that the spherical outer surface 30 remains. It extends. Here, “concave” means to make a recess from the spherical outer surface 30 in the radial direction, and includes not only making a groove but also chamfering in a planar shape. The shaft portion 44 has a substantially circular flange 50 at the base end portion thereof, and an engaging portion 50-1 fitted to the central flat portion 34-1 of the shaft attachment portion 34 is provided at the end surface thereof. And a pair of engaging protrusions 50-2 extending parallel to the second through hole 32 and engaged with the stepped portion 34-2 of the shaft mounting portion 34 are left on both sides thereof, A locking projection 50-3 remains at one axial end of the engaging portion 50-1. The engaging portion 50-1 is also engaged with an engaging rib 48 provided at one end periphery of the seal member holding member 42, and the locking projection 50-3 locks the engaging rib 48 to hold the seal member. The member 42 is held so as not to move in the insertion direction.
　ボールバルブ１４は、シャフト部４４がケーシング部材１６のシャフト係合孔５２に回動可能に支持されて、継手本体１２とケーシング部材１６との間で２つのシャフト部４４を通る回転中心軸線５６の周りで回動可能となっている。ケーシング部材１６の外周には、後に詳細に説明するボールバルブ１４の回動防止を行うために、スリーブ５８と、該スリーブ５８をシャフト部４４と係合する方向に付勢するためのスプリング６０とが設けられている。 In the ball valve 14, the shaft portion 44 is rotatably supported by the shaft engaging hole 52 of the casing member 16, and a rotation center axis 56 passing through the two shaft portions 44 between the joint body 12 and the casing member 16 is provided. It can be rotated around. On the outer periphery of the casing member 16, a sleeve 58 and a spring 60 for urging the sleeve 58 in a direction to engage with the shaft portion 44 in order to prevent rotation of the ball valve 14 described in detail later. Is provided.
　本実施形態におけるボールバルブ１４を組み付ける際には、まず、ケーシング部材１６の内側から２つのシャフト部４４を各シャフト係合孔５２を通すようにそれぞれ配置し、また、端面シール部材４０とシール部材保持部材４２を第２貫通孔３２内に挿入配置する。このようにされた状態のバルブ本体３６を、端面シール部材４０とシール部材保持部材４２とともに、シャフト取付部３４の中央平面部３４－１が係合部５０－１内に係合するようにしてケーシング部材１６内部に挿入する。このとき、シール部材保持部材４２の係合リブ４８は、シャフト部４４の係止突起５０－３によって係止される。続いて、環状シール部材２６とパージ抑制部材２８とが取り付けられた継手本体１２をケーシング部材１６にねじ係合して、環状シール部材２６がバルブ本体３６の球面状の外表面３０に密封係合するように取り付ける。このとき、パージ抑制部材２８の球面状の内表面５４とバルブ本体３６の球面状の外表面３０との間は接触しないで隙間が形成されている。このような簡易な組み付けが可能となっているのは、特にシャフト部４４を別体の部材としたことによるものである。 When assembling the ball valve 14 in the present embodiment, first, the two shaft portions 44 are respectively arranged from the inside of the casing member 16 so as to pass through the respective shaft engagement holes 52, and the end face seal member 40 and the seal member are arranged. The holding member 42 is inserted and disposed in the second through hole 32. The valve main body 36 in this state is engaged with the end face seal member 40 and the seal member holding member 42 so that the central flat portion 34-1 of the shaft attachment portion 34 is engaged in the engagement portion 50-1. It is inserted into the casing member 16. At this time, the engaging rib 48 of the seal member holding member 42 is locked by the locking protrusion 50-3 of the shaft portion 44. Subsequently, the joint body 12 to which the annular seal member 26 and the purge suppressing member 28 are attached is screw-engaged with the casing member 16, and the annular seal member 26 is sealingly engaged with the spherical outer surface 30 of the valve body 36. Attach as shown. At this time, a gap is formed between the spherical inner surface 54 of the purge suppressing member 28 and the spherical outer surface 30 of the valve body 36 without contact. This simple assembly is possible because the shaft portion 44 is a separate member.
　雄型継手６２は、全体として管状とされており、その外周面には環状の係合部７０が凹設されている。この雄型継手６２を雌型継手１０に連結するには、まず、図３Ａに示すように、ボールバルブ１４の第２貫通孔３２の向きが継手本体１２の長手方向に対して約６０度の方向となる第１回動位置にボールバルブ１４が位置している状態、すなわち着脱可能状態にあるときに、雄型継手６２をケーシング部材１６の挿入口６４を通してボールバルブ１４の第２貫通孔３２内に挿入する。このとき雄型継手６２の先端部の外周面は、第２貫通孔３２の雄型継手挿入部６６に挿入されたシール部材保持部材４２の内周面に接し、また前端面６８は端面シール部材４０に当接した状態となる。継手本体１２の第１貫通孔２２の他端２０側はボールバルブ１４の外表面３０と環状シール部材２６とによって封止され、第１貫通孔２２内の流体が外部に漏れない状態となっている。次に、雄型継手６２を図３Ｂの矢印Ａの方向に回動すると、雄型継手６２の外周面に設けられた凹形状の係合部７０がケーシング部材１６のスロット開口部７２を画定する両側の縁に設けられた係合縁部７４に係合するようになる。さらに、図３Ｅに示す、第２貫通孔３２が第１貫通孔２２と長手方向で整合した第２回動位置にまでボールバルブ１４が回動するように雄型継手６２を回動すると、雌型継手１０と雄型継手６２とが連結状態となり、継手本体１２の他端２０とボールバルブ１４の外表面３０とが環状シール部材２６によって密封係合された状態で第１貫通孔２２と第２貫通孔３２の連通部６７とが連通する。また、雄型継手６２の前端面６８とボールバルブ１４の環状段部３８とが、後に説明するように端面シール部材４０を押圧して密封係合された状態で、第２貫通孔３２と第３貫通孔７６とが連通した状態となる。すなわち、連結状態では、第１、第２、及び第３貫通孔２２，３２，７６が連通すると共に、これら貫通孔間は２つのシール部材２６，４０により外部に対して密封された状態となる。 The male joint 62 has a tubular shape as a whole, and an annular engaging portion 70 is recessed in the outer peripheral surface thereof. In order to connect the male joint 62 to the female joint 10, first, as shown in FIG. 3A, the direction of the second through hole 32 of the ball valve 14 is about 60 degrees with respect to the longitudinal direction of the joint body 12. When the ball valve 14 is located at the first rotation position in the direction, that is, in the detachable state, the male joint 62 is inserted into the second through hole 32 of the ball valve 14 through the insertion port 64 of the casing member 16. Insert inside. At this time, the outer peripheral surface of the distal end portion of the male joint 62 is in contact with the inner peripheral surface of the seal member holding member 42 inserted into the male joint insertion portion 66 of the second through-hole 32, and the front end surface 68 is the end surface seal member. 40. The other end 20 side of the first through hole 22 of the joint body 12 is sealed by the outer surface 30 of the ball valve 14 and the annular seal member 26, so that the fluid in the first through hole 22 does not leak to the outside. Yes. Next, when the male joint 62 is rotated in the direction of arrow A in FIG. 3B, the concave engagement portion 70 provided on the outer peripheral surface of the male joint 62 defines the slot opening 72 of the casing member 16. It engages with engaging edges 74 provided on the edges on both sides. Further, when the male joint 62 is rotated so that the ball valve 14 rotates to the second rotation position where the second through hole 32 is aligned with the first through hole 22 in the longitudinal direction, as shown in FIG. The mold joint 10 and the male joint 62 are connected to each other, and the other end 20 of the joint body 12 and the outer surface 30 of the ball valve 14 are sealed and engaged with the annular seal member 26. The communication part 67 of the 2 through-hole 32 communicates. In addition, the front end surface 68 of the male joint 62 and the annular stepped portion 38 of the ball valve 14 are in sealing engagement with the end surface seal member 40, as will be described later. The three through holes 76 are in communication with each other. That is, in the connected state, the first, second, and third through holes 22, 32, and 76 communicate with each other, and the through holes are sealed to the outside by the two seal members 26 and 40. .
　次に、雄型継手６２の前端面６８とボールバルブ１４の環状段部３８との間の端面シール部材４０による密封係合について説明する。密封係合するには、端面シール部材４０を前端面６８と環状段部３８との間で押圧してある程度押し潰し、前端面６８と環状段部３８とに密着させる必要がある。これは、以下に示すような構造により、雄型継手６２を着脱可能状態から連結状態にまで回動させることでなされる。雄型継手６２は、その係合部７０がケーシング部材１６のスロット開口部７２の係合縁部７４に摺動係合しながら着脱可能状態（図３Ａ）から連結状態（図３Ｅ）にまで回動するようになっている。係合縁部７４は、図４に示す側面断面図で見たときに、挿入口６４との境界部分７８から長手方向軸線８０と図面上で交わる位置８２までが、円弧状の湾曲部８４となっており、この湾曲部８４は、その円弧の中心５７がボールバルブ１４の回転中心軸線５６よりも長手軸線上で遠方（図で見て左側）に位置するような湾曲を有している。つまり、係合縁部７４における挿入口６４との境界部分７８から回転中心軸線５６までの距離Ｌ１よりも、連結状態において雄型継手６２の係合部７０が係合する上記位置８２から回転中心軸線５６までの距離Ｌ２の方が短くなるようになっている。従って、雄型継手６２を着脱可能状態から連結状態へと回動させるに従って、係合縁部７４に係合している雄型継手６２の係合部７０はボールバルブ１４の回転中心軸線５６に向かって徐々に押され、その結果、雄型継手６２の前端面６８が端面シール部材４０を徐々に押圧するようになっている。従って、雄型継手６２を端面シール部材４０に向かって押すような操作をすることなく、回動させるだけで、雄型継手６２の前端面６８とボールバルブ１４の環状段部３８との間を密封係合することができる。なお、本実施形態では、係合縁部７４は円弧状の湾曲となっているが、湾曲は必ずしも円弧状である必要はない。 Next, the sealing engagement by the end surface sealing member 40 between the front end surface 68 of the male joint 62 and the annular step portion 38 of the ball valve 14 will be described. For hermetically engaging, the end face seal member 40 needs to be pressed between the front end face 68 and the annular step portion 38 to be crushed to some extent and brought into close contact with the front end face 68 and the annular step portion 38. This is done by rotating the male joint 62 from the attachable / detachable state to the connected state by the structure shown below. The male joint 62 rotates from the detachable state (FIG. 3A) to the connected state (FIG. 3E) while the engaging portion 70 is slidingly engaged with the engaging edge 74 of the slot opening 72 of the casing member 16. It comes to move. When the engagement edge portion 74 is viewed from the side cross-sectional view shown in FIG. 4, the portion from the boundary portion 78 to the insertion port 64 to the position 82 where the longitudinal axis 80 intersects the drawing portion is the arcuate curved portion 84. The curved portion 84 has such a curvature that the center 57 of the arc is located farther (on the left side in the drawing) on the longitudinal axis than the rotation center axis 56 of the ball valve 14. That is, the center of rotation from the position 82 where the engagement portion 70 of the male joint 62 engages in the connected state is greater than the distance L1 from the boundary portion 78 of the engagement edge 74 to the insertion port 64 to the rotation center axis 56. The distance L2 to the axis 56 is shorter. Therefore, as the male joint 62 is rotated from the attachable / detachable state to the connected state, the engaging portion 70 of the male joint 62 engaged with the engaging edge portion 74 is moved to the rotation center axis 56 of the ball valve 14. As a result, the front end face 68 of the male joint 62 gradually presses the end face seal member 40. Therefore, the rotation of the male joint 62 between the front end surface 68 of the male joint 62 and the annular step portion 38 of the ball valve 14 is performed without rotating the male joint 62 toward the end face seal member 40. A sealing engagement is possible. In this embodiment, the engagement edge 74 has an arcuate curve, but the curve does not necessarily have an arcuate shape.
　第２回動位置にあるボールバルブ１４は次のようにして、その回動が防止される。図８Ａ、図８Ｂ、図９Ａ及び図９Ｂに示すように、ボールバルブ１４のシャフト部４４には、シャフト部４４の外周から内側に延びて直角に交わる２つの直線８６－１とシャフト部の外周の一部を構成する円弧８６－２とからなり、回転中心軸線上の点又はその近傍を頂点とする中心角９０度の扇形状横断面を有する切欠き部８６が設けられている。また、図２から分かるように、円管状のスリーブ５８の内周面には、スリーブ５８の摺動方向に延びる係合溝８８が設けられている。図５に示された着脱可能状態では、スリーブ５８の前端面５９がシャフト部４４の円弧状の外周面に当接しているので、ボールバルブ１４の回動は制限されない。一方で、図６に示された連結状態では、シャフト部４４の切欠き部８６とスリーブ５８の係合溝８８とが噛み合うことが可能な状態となり、シャフト部４４に向かってスプリング６０で付勢されているスリーブ５８は、スリーブ５８の前端面５９がシャフト部４４の切欠き部８６に係合するまで前進し、図７に示した回動防止状態となる。この回動防止状態では、シャフト部４４の切欠き部８６がスリーブ５８の係合溝８８と噛み合っているので、ボールバルブ１４の回動が防止され、従って雄型継手６２が誤って回動して雌型継手１０から外れることが防止される。ボールバルブ１４を回動させたいときには、スリーブ５８を継手本体１２側に後退させて、シャフト部４４の切欠き部８６とスリーブ５８の係合溝８８との係合を解除して、雄型継手６２を回動するようにする。 The ball valve 14 in the second rotation position is prevented from rotating as follows. As shown in FIGS. 8A, 8B, 9A, and 9B, the shaft portion 44 of the ball valve 14 includes two straight lines 86-1 extending inward from the outer periphery of the shaft portion 44 and intersecting at right angles, and the outer periphery of the shaft portion. And a notch 86 having a fan-shaped cross section with a central angle of 90 degrees with a point on the rotation center axis or the vicinity thereof as a vertex. As can be seen from FIG. 2, an engagement groove 88 extending in the sliding direction of the sleeve 58 is provided on the inner peripheral surface of the circular sleeve 58. In the detachable state shown in FIG. 5, the front end surface 59 of the sleeve 58 is in contact with the arc-shaped outer peripheral surface of the shaft portion 44, so that the rotation of the ball valve 14 is not limited. On the other hand, in the coupled state shown in FIG. 6, the notch portion 86 of the shaft portion 44 and the engagement groove 88 of the sleeve 58 can be engaged with each other, and the spring 60 is biased toward the shaft portion 44. The sleeve 58 is advanced until the front end surface 59 of the sleeve 58 is engaged with the notch 86 of the shaft portion 44, and is in a state of preventing rotation shown in FIG. In this rotation prevention state, the notch portion 86 of the shaft portion 44 is engaged with the engagement groove 88 of the sleeve 58, so that the ball valve 14 is prevented from rotating, and thus the male joint 62 rotates erroneously. This prevents the female joint 10 from coming off. When it is desired to rotate the ball valve 14, the sleeve 58 is retracted toward the joint body 12, and the engagement between the notch portion 86 of the shaft portion 44 and the engagement groove 88 of the sleeve 58 is released. 62 is rotated.
　接続された雄型継手６２を雌型継手１０から取り外すには、雄型継手６２を、連結するときとは逆向きに図３Ｅに示す連結状態から図３Ａに示す着脱可能状態へと回動させる。このとき、本発明に係る雌型継手１０では、以下に述べるように、継手内部に存在する加圧流体が外部に徐々に放出されるようになっている。 In order to remove the connected male joint 62 from the female joint 10, the male joint 62 is rotated from the connected state shown in FIG. 3E to the detachable state shown in FIG. . At this time, in the female joint 10 according to the present invention, as described below, the pressurized fluid existing inside the joint is gradually discharged to the outside.
　図８Ａ，８Ｂ、９Ａ，及び９Ｂに示すように、パージ抑制部材２８は、ボールバルブ１４の外表面３０に沿うように係合する環状のリップ部９２を有する。バルブ本体３６の球面状の外表面３０には、前述のように、シャフト取付部３４が設けられており、各シャフト取付部３４の両側には該外表面３０に凹設された段状部３４－２が形成されているので、合計４つの段状部３４－２が形成されている。リップ部９２は、図８Ａ，８Ｂに示すボールバルブ１４が第１回動位置にある状態ではこの４つの段状部３４－２のうちの２つの上を通る配置となり、図９Ａ，９Ｂに示すボールバルブ１４が第２回動位置にある状態では、４つ全ての段状部３４－２の上を通る配置となるようになっている。すなわち、パージ抑制部材２８のリップ部９２は、ボールバルブ１４が第１回動位置と第２回動位置との間にあるときには、ボールバルブ１４に形成されている４つの段状部３４－２のうちの少なくとも２つの上を通過するようになっており、リップ部９２とボールバルブ１４との間に常に微小間隙９６が形成されるようになっている。 8A, 8B, 9A, and 9B, the purge suppressing member 28 has an annular lip portion 92 that engages along the outer surface 30 of the ball valve 14. As described above, the shaft mounting portions 34 are provided on the spherical outer surface 30 of the valve main body 36, and the stepped portions 34 recessed in the outer surface 30 are provided on both sides of each shaft mounting portion 34. -2 is formed, so that a total of four stepped portions 34-2 are formed. When the ball valve 14 shown in FIGS. 8A and 8B is in the first rotation position, the lip portion 92 is disposed so as to pass over two of the four stepped portions 34-2, as shown in FIGS. 9A and 9B. When the ball valve 14 is in the second rotation position, the ball valve 14 is arranged so as to pass over all four stepped portions 34-2. That is, the lip portion 92 of the purge suppressing member 28 has four stepped portions 34-2 formed on the ball valve 14 when the ball valve 14 is between the first rotation position and the second rotation position. And a minute gap 96 is always formed between the lip portion 92 and the ball valve 14.
　図３Ｅに示した連結状態から矢印Ｂの方向に雄型継手６２を回動して図３Ｃの状態に至ると、環状シール部材２６とボールバルブ１４の外表面３０との密封係合が一部解除された状態となる。パージ抑制部材２８のリップ部９２はボールバルブ１４の外表面３０と係合した状態を維持しているが、上述のようにリップ部９２とボールバルブ１４との間にはボールバルブ１４の外表面３０に凹設した段状部３４－２による微小間隙９６が形成されているので、継手内部の加圧流体はこの微小間隙９６を介して外部に徐々に放出されるようになる。また、リップ部９２とボールバルブ１４の外表面３０との間は、係合はしているが密封はされておらず、隙間が形成されている。よって、加圧流体は微小間隙９６だけでなくリップ部９２とボールバルブ１４の外表面３０との間の隙間からも放出される。さらに雄型継手６２を回動させて図３Ｂから図３Ａの状態にまで至ると、リップ部９２とボールバルブ１４との係合も部分的に解除されるので、第２貫通孔３２は微小間隙９６を介することなくパージ解放口９８と直接連通した状態となる。この状態では、第２貫通孔３２及び第３貫通孔７６内の流体はパージ解放口９８から直接外部に放出されるが、微小間隙９６を通してある程度の流体が既に放出されて流体圧が低下しているので、放出される速度は小さくなる。 When the male joint 62 is rotated in the direction of arrow B from the connected state shown in FIG. 3E to reach the state shown in FIG. 3C, the sealing engagement between the annular seal member 26 and the outer surface 30 of the ball valve 14 is partially performed. It becomes a released state. The lip portion 92 of the purge suppressing member 28 maintains a state of being engaged with the outer surface 30 of the ball valve 14, but the outer surface of the ball valve 14 is between the lip portion 92 and the ball valve 14 as described above. Since the minute gap 96 is formed by the stepped portion 34-2 provided in the recess 30, the pressurized fluid inside the joint is gradually discharged to the outside through the minute gap 96. Further, the lip portion 92 and the outer surface 30 of the ball valve 14 are engaged but not sealed, and a gap is formed. Therefore, the pressurized fluid is discharged not only from the minute gap 96 but also from the gap between the lip portion 92 and the outer surface 30 of the ball valve 14. When the male joint 62 is further rotated to reach the state shown in FIG. 3B to FIG. 3A, the engagement between the lip portion 92 and the ball valve 14 is also partially released. In this state, the purge release port 98 is directly communicated without passing through 96. In this state, the fluid in the second through hole 32 and the third through hole 76 is directly discharged to the outside from the purge release port 98, but a certain amount of fluid has already been discharged through the micro gap 96, and the fluid pressure has decreased. As a result, the rate of release is reduced.
　このように、本発明の管継手における雌型継手１０は、継手本体１２とボールバルブ１４との間の密封係合が部分的に解除されてから雄型継手６２側の流路が大気開放されるまでの過程において、微小間隙９６からなる制限流路により内部流体が比較的に小流量で徐々に放出されるようになっている。これによって、内部の流体圧力を徐々に下げることができるので、高圧の流体が一気に大気開放されて放出されることを防止し、これによって流体放出時の騒音を大きく低減することが可能となる。加えて、急激な流体の放出により継手が飛ばされるなどの危険も低減することが可能となる。また、リップ部９２が無い場合には、雄型継手６２を連結状態から着脱可能状態に回動させる際の比較的に早い段階で継手本体１２の第１貫通孔２２が制限流路を介することなくパージ解放口９８と直接連通してしまうので、第１貫通孔２２側（流体供給源側）の流体が大量に大気中に放出されてしまう虞がある。しかし、リップ部９２があることによりその放出量を抑えることも可能となり、エネルギーの節約にも貢献する。 Thus, in the female joint 10 in the pipe joint of the present invention, the flow path on the male joint 62 side is released to the atmosphere after the sealing engagement between the joint body 12 and the ball valve 14 is partially released. In the process up to this point, the internal fluid is gradually discharged at a relatively small flow rate by the restricted flow path composed of the minute gap 96. As a result, the internal fluid pressure can be gradually lowered, so that high-pressure fluid can be prevented from being released to the atmosphere at once, and thereby noise during fluid discharge can be greatly reduced. In addition, it is possible to reduce the risk of the joint being skipped due to sudden fluid discharge. Further, when the lip portion 92 is not provided, the first through hole 22 of the joint body 12 passes through the restriction channel at a relatively early stage when the male joint 62 is rotated from the connected state to the detachable state. Since there is no direct communication with the purge release port 98, a large amount of fluid on the first through-hole 22 side (fluid supply source side) may be released into the atmosphere. However, the presence of the lip portion 92 makes it possible to reduce the amount of discharge and contributes to energy saving.
　本実施形態では、環状シール部材２６及び端面シール部材４０の材料として、高い密封性を得るためにゴム材料を採用し、パージ抑制部材２８の材料としてはボールバルブ１４との高い摺動性を得るためにシール部材２６，４０のゴム材料よりも硬質で低摩擦な特性を有する樹脂材料を採用している。 In the present embodiment, a rubber material is employed as a material for the annular seal member 26 and the end surface seal member 40 in order to obtain high sealing performance, and a high slidability with the ball valve 14 is obtained as a material for the purge suppression member 28. Therefore, a resin material that is harder and has a lower friction characteristic than the rubber material of the seal members 26 and 40 is employed.
　なお、本実施形態では、制限流路としての微小間隙９６をバルブ本体３６のシャフト取付部３４により形成される段状部３４－２とパージ抑制部材２８のリップ部９２との間で形成しているが、例えば、バルブ本体３６の外表面３０の別の位置に別の溝を設けることで微小間隙を形成するようにしてもよいし、リップ部９２側に凹部を設けてボールバルブとの間に微小間隙を形成するようにしてもよい。また、ボールバルブ及びパージ抑制部材には凹部を設けるのではなく、パージ抑制部材２８のリップ部９２とボールバルブ１４の外表面３０との間に適度な隙間が形成されるようにして、該隙間を制限流路としてもよい。 In this embodiment, a minute gap 96 as a restriction channel is formed between the stepped portion 34-2 formed by the shaft mounting portion 34 of the valve body 36 and the lip portion 92 of the purge suppressing member 28. However, for example, a minute gap may be formed by providing another groove at a different position on the outer surface 30 of the valve body 36, or a recess may be provided on the lip portion 92 side to provide a space between the ball valve and the ball valve 36. Alternatively, a minute gap may be formed. In addition, the ball valve and the purge suppression member are not provided with a recess, but an appropriate clearance is formed between the lip portion 92 of the purge suppression member 28 and the outer surface 30 of the ball valve 14. May be a restricted flow path.
　以上、本発明の実施形態を説明したが本発明はこれに限定されるものではない。本実施形態では、大流量を流せるように第１及び第２貫通孔２２，３２を比較的に大径としており、これによって、図３Ｂの状態において第１貫通孔２２が制限流路を介することなくパージ解放口９８と連通した状態となっているが、例えば第１及び第２貫通孔２２，３２の径を小さくして、パージ抑制部材２８の係合が解除される前に第１貫通孔２２がボールバルブ１４の外表面３０によって封止されるようにして、第１貫通孔２２が制限流路を介すること無くパージ解放口９８と連通することがないようにし、第１貫通孔２２側からの放出量をさらに低減するようにすることも可能である。 As mentioned above, although embodiment of this invention was described, this invention is not limited to this. In the present embodiment, the first and second through holes 22 and 32 have a relatively large diameter so that a large flow rate can flow, whereby the first through hole 22 passes through the restriction channel in the state of FIG. 3B. However, the first and second through- holes 22 and 32 are reduced in diameter, for example, before the purge suppression member 28 is disengaged. 22 is sealed by the outer surface 30 of the ball valve 14 so that the first through hole 22 does not communicate with the purge release port 98 without passing through the restriction flow path, and the first through hole 22 side. It is also possible to further reduce the amount released from the.
　８　管継手
１０　雌型継手　　　　　　　　　　　　　１２　継手本体
１４　ボールバルブ　　　　　　　　　　　１６　ケーシング部材
１８　一端　　　　　　　　　　　　　　　２０　他端
２２　第１貫通孔　　　　　　　　　　　　２４　雄ねじ部
２６　環状シール部材　　　　　　　　　　２８　パージ抑制部材
３０　外表面　　　　　　　　　　　　　　３２　第２貫通孔
３４　シャフト取付部　　　　　　　　　　３４－１　中央平面部
３４－２　段状部　　　　　　　　　　　　３４－３　端壁
３６　バルブ本体　　　　　　　　　　　　３８　環状段部
４０　端面シール部材　　　　　　　　　　４２　シール部材保持部材
４４　シャフト部　　　　　　　　　　　　４６　前端面
４８　係合リブ　　　　　　　　　　　　　５０　フランジ
５０－１　係合部　　　　　　　　　　　　５０－２　係合突起
５０－３　係合突起　　　　　　　　　　　５２　シャフト係合孔
５４　内表面　　　　　　　　　　　　　　５６　回転中心軸線
５７　円弧の中心　　　　　　　　　　　　５８　スリーブ
５９　前端面　　　　　　　　　　　　　　６０　スプリング
６２　雄型継手　　　　　　　　　　　　　６４　挿入口
６６　雄型継手挿入部　　　　　　　　　　６７　連通部
６８　前端面　　　　　　　　　　　　　　７０　係合部
７２　スロット開口部　　　　　　　　　　７４　係合縁部
７６　第３貫通孔　　　　　　　　　　　　７８　境界部分
８０　長手方向軸線　　　　　　　　　　　８２　位置
８４　湾曲部　　　　　　　　　　　　　　８６　切欠き部
８６－１　直線　　　　　　　　　　　　　８６－２　円弧
８８　係合溝　　　　　　　　　　　　　　９２　リップ部
９６　微小間隙　　　　　　　　　　　　　９８　パージ解放口 8 Pipe joint 10 Female joint 12 Joint body 14 Ball valve 16 Casing member 18 One end 20 Other end 22 First through hole 24 Male threaded portion 26 Annular seal member 28 Purge suppression member 30 Outer surface 32 Second through hole 34 Shaft mounting portion 34 -1 Central plane portion 34-2 Stepped portion 34-3 End wall 36 Valve body 38 Annular stepped portion 40 End surface seal member 42 Seal member holding member 44 Shaft portion 46 Front end surface 48 Engaging rib 50 Flange 50-1 Engaging portion 50-2 engagement protrusion 50-3 engagement protrusion 52 shaft engagement hole 54 inner surface 56 rotation center axis 57 center of arc 58 sleeve 59 front end face 60 spring 62 male joint 64 Insertion Port 66 Male Joint Insertion Portion 67 Communication Portion 68 Front End Face 70 Engagement Portion 72 Slot Opening Portion 74 Engagement Edge 76 Third Through Hole 78 Boundary Portion 80 Longitudinal Axis 82 Position 84 Curved Portion 86 Notch 86 -1 Straight line 86-2 Arc 88 Engaging groove 92 Lip part 96 Minute gap 98 Purge release port

Claims (7)

  1. 　外周面に係合部を有する雄型継手を着脱可能に連結する雌型継手であって、
    　一端から他端まで長手方向に貫通する第１貫通孔を有し、前記一端に導管が接続される筒状の継手本体と、
    　球面状の外表面、及び、該外表面を通り直径方向で貫通する第２貫通孔を有するバルブ本体と、前記第２貫通孔内に配置された端面シール部材とを有する、前記継手本体の前記他端側に配置されたボールバルブであって、前記第２貫通孔が、前記雄型継手が挿入される雄型継手挿入部と、該雄型継手挿入部に挿入された前記雄型継手の前端面に隣接して対向する環状段部と、該環状段部に続いて前記雄型継手挿入部とは反対方向に延び、挿入された該雄型継手の第３貫通孔と連通される連通部とを有しており、前記端面シール部材は、前記環状段部に配置され、前記雄型継手挿入部に前記雄型継手が挿入されて前記雄型継手の前記第３貫通孔と前記第２貫通孔の前記連通部とが連通状態とされたときに、前記雄型継手の前端面が当接して前記前端面と前記環状段部との間をシールするようにされている、ボールバルブと、
    　前記継手本体に対して固定されたケーシング部材であって、前記ボールバルブを、前記バルブ本体の前記外表面によって前記第１貫通孔の前記他端側を封止する第１回動位置と、前記第２貫通孔を前記第１貫通孔に前記長手方向で整合して連通する第２回動位置との間において該バルブ本体の中心を通る回転中心軸線周りで回転可能に保持するケーシング部材と、を備えており、
    　前記ケーシング部材は、前記第１回動位置にある前記ボールバルブの前記バルブ本体の前記雄型継手挿入部に前記雄型継手を挿入することを許容する挿入口と、前記雄型継手挿入部に前記雄型継手が挿入された状態で前記ボールバルブが前記第１回動位置と第２回動位置との間で回動するときに該雄型継手の動きを許容する、前記挿入口から延びるスロット開口部とを有し、該スロット開口部を画定する両側の縁には、前記雄型継手の前記係合部と摺動係合する係合縁部が設けられており、
    　前記係合縁部は、該係合縁部における前記挿入口との境界位置から前記回転中心軸までの距離よりも、前記雄型継手が挿入された前記ボールバルブが前記第２回動位置とされたときに前記係合部と係合する位置から前記回転中心軸までの距離の方が短くなるようになっており、前記第２回動位置において、前記係合縁部が前記係合部を当該ボールバルブの前記回転中心軸線に向けて押圧し、前記雄型継手の前端面が前記端面シール部材を前記環状段部に押圧するようにされている、雌型継手。     A female joint for detachably connecting a male joint having an engagement portion on the outer peripheral surface,
    A cylindrical joint body having a first through hole penetrating in a longitudinal direction from one end to the other end, and having a conduit connected to the one end;
    The joint body has a spherical outer surface, a valve body having a second through hole that passes through the outer surface in a diametrical direction, and an end face seal member disposed in the second through hole. A ball valve disposed on the other end side, wherein the second through hole includes a male joint insertion portion into which the male joint is inserted, and a male joint insertion portion into the male joint insertion portion. An annular step portion that is adjacent to the front end surface and is opposed to the annular step portion, extends in the opposite direction to the male joint insertion portion, and communicates with the third through hole of the inserted male joint. The end face seal member is disposed in the annular step portion, the male joint is inserted into the male joint insertion portion, and the third through hole of the male joint and the first When the communicating portion of the two through holes is in a communicating state, the front end surface of the male joint comes into contact with the Between the end face and the annular step portion being adapted to seal a ball valve,
    A casing member fixed to the joint body, wherein the ball valve is sealed at the other end side of the first through hole by the outer surface of the valve body; A casing member that holds the second through hole rotatably around a rotation center axis passing through the center of the valve body between the second through position and the second rotation position that communicates with the first through hole in the longitudinal direction; With
    The casing member includes an insertion opening that allows the male joint to be inserted into the male joint insertion portion of the valve body of the ball valve in the first rotation position, and the male joint insertion portion. The ball valve extends from the insertion port to allow movement of the male joint when the ball valve rotates between the first rotation position and the second rotation position with the male joint inserted. An engaging edge that is slidably engaged with the engaging portion of the male joint is provided on both edges defining the slot opening.
    The engagement edge portion is configured such that the ball valve into which the male joint is inserted is located at the second rotation position with respect to a distance from the boundary position with the insertion port at the engagement edge portion to the rotation center axis. The distance from the position that engages with the engaging portion to the rotation center axis is shorter when the engagement edge portion is engaged with the engaging portion at the second rotation position. Is pressed toward the rotational axis of the ball valve, and the front end surface of the male joint presses the end surface seal member against the annular step portion.
  2. 　前記雄型継手が挿入された前記ボールバルブが前記第１回動位置から前記第２回動位置に向かって回動されるときに、前記係合縁部における前記雄型継手の前記係合部と係合している部分から前記ボールバルブの前記回転中心軸線までの距離が、前記ボールバルブが前記第１回動位置から前記第２回動位置に向かって回動するに従って短くなるように、前記係合縁部が湾曲している請求項１に記載の雌型継手。 The engaging portion of the male joint at the engaging edge when the ball valve into which the male joint is inserted is rotated from the first rotation position toward the second rotation position. The distance from the portion engaged with the rotation center axis of the ball valve becomes shorter as the ball valve rotates from the first rotation position toward the second rotation position. The female joint according to claim 1, wherein the engaging edge is curved.
  3. 　前記係合縁部の前記湾曲が、前記長手方向で前記ボールバルブの前記回転中心軸線よりも前記継手本体側の位置を中心とする円弧状である、請求項２に記載の雌型継手。 3. The female joint according to claim 2, wherein the curvature of the engagement edge portion is an arc shape centering on a position closer to the joint body side than the rotation center axis of the ball valve in the longitudinal direction.
  4. 　前記ボールバルブは、前記回転中心軸線に沿って前記バルブ本体から前記ケーシング部材の外側にまで延在するシャフト部であって、前記ケーシング部材に回転可能に支持されて該バルブ本体とともに回動し、その外周面に切欠き部を有するシャフト部を備えており、
    　当該雌型継手は更に、前記ケーシング部材の外側に、前記長手方向に摺動可能なスリーブを備えており、
    　前記ボールバルブが前記第２回動位置にあるときに、前記スリーブが前記ボールバルブの前記切欠き部に係合して、前記ボールバルブが回動するのを防止するようにされている、請求項１乃至３のいずれかに記載の雌型継手。     The ball valve is a shaft portion extending from the valve body to the outside of the casing member along the rotation center axis, and is rotatably supported by the casing member and rotates together with the valve body. It has a shaft part with a notch on its outer peripheral surface,
    The female joint further includes a sleeve slidable in the longitudinal direction outside the casing member,
    The sleeve is engaged with the notch of the ball valve to prevent the ball valve from rotating when the ball valve is in the second rotation position. Item 4. The female joint according to any one of Items 1 to 3.
  5. 　前記切欠き部は、前記シャフト部の回転中心軸線を頂点とする中心角９０度の扇形状横断面を有する、請求項４に記載の雌型継手。 The female joint according to claim 4, wherein the notch has a fan-shaped cross section having a central angle of 90 degrees with the rotation center axis of the shaft as a vertex.
  6. 　前記ボールバルブが、前記第２貫通孔の前記雄型継手挿入部の周壁に沿って設けられたシール部材保持部材であって、前記環状段部に配置された前記端面シール部材と係合して該端面シール部材を前記環状段部上に保持するシール部材保持部材を備えており、前記バルブ本体の前記外表面には、該外表面に凹設して作られたシャフト取付部が設けられており、前記シャフト部は、前記バルブ本体とは別体に設けられ、該シャフト部の基端部分に設けられた係合部を、前記シャフト取付部に係合して前記バルブ本体に取り付けられると共に、前記シール部材保持部材と係合して前記シール部材保持部材を前記第２貫通孔内に係止するようにされている、請求項４に記載の雌型継手。 The ball valve is a seal member holding member provided along a peripheral wall of the male joint insertion portion of the second through hole, and is engaged with the end surface seal member disposed in the annular step portion. A seal member holding member for holding the end surface seal member on the annular stepped portion; and a shaft mounting portion formed by recessing the outer surface is provided on the outer surface of the valve body. The shaft portion is provided separately from the valve body, and an engagement portion provided at a proximal end portion of the shaft portion is engaged with the shaft attachment portion and attached to the valve body. The female joint according to claim 4, wherein the female joint is engaged with the seal member holding member to lock the seal member holding member in the second through hole.
  7. 　上記請求項１又は２に記載の雌型継手と、
    　前記第１回動位置にある前記ボールバルブの前記バルブ本体の前記雄型継手挿入部に前記ケーシング部材の挿入口を通して挿入されるようにされた雄型継手であって、前記ボールバルブが前記第１回動位置から前記第２回動位置に回動されるときに前記ケーシング部材の前記係合縁部と摺動係合する係合部であって、前記ボールバルブの前記第２回動位置において、前記係合縁部によって前記ボールバルブの前記回転中心軸線に向けて押圧される係合部と、前記ボールバルブの前記第２回動位置において、前記端面シール部材に押圧される前端面と、を有する雄型継手と、
    　からなる管継手。
          The female joint according to claim 1 or 2,
    A male joint inserted into the male joint insertion portion of the valve body of the ball valve in the first rotation position through an insertion port of the casing member, the ball valve being the first An engagement portion that is slidably engaged with the engagement edge portion of the casing member when rotated from one rotation position to the second rotation position, the second rotation position of the ball valve An engagement portion that is pressed toward the rotation center axis of the ball valve by the engagement edge, and a front end surface that is pressed by the end surface seal member at the second rotation position of the ball valve. A male joint having
    Pipe fitting made of
PCT/JP2013/059195 2012-03-28 2013-03-28 Female joint and fitting provided with same WO2013146989A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-073953 2012-03-28
JP2012073953A JP5832349B2 (en) 2012-03-28 2012-03-28 Pipe fitting

Publications (1)

Publication Number Publication Date
WO2013146989A1 true WO2013146989A1 (en) 2013-10-03

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ID=49260237

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Application Number Title Priority Date Filing Date
PCT/JP2013/059195 WO2013146989A1 (en) 2012-03-28 2013-03-28 Female joint and fitting provided with same

Country Status (3)

Country Link
JP (1) JP5832349B2 (en)
TW (1) TWI500873B (en)
WO (1) WO2013146989A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017192681A1 (en) * 2016-05-04 2017-11-09 Swan Products Llc Multi-axis rotatable coupling element for a hose or pipe
WO2019113337A1 (en) * 2017-12-07 2019-06-13 Tyco Fire Products Lp Adjustable swivel
US10337657B2 (en) * 2013-09-11 2019-07-02 Inspired Designs Limited Tubular couplings and connectors

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03117797A (en) * 1989-06-29 1991-05-20 Atlas Copco Tools Ab Quick coupling
JPH03140692A (en) * 1989-06-29 1991-06-14 Atlas Copco Tools Ab Rotary valve-type rapid joint
JPH07504965A (en) * 1993-01-22 1995-06-01 ハンス、エティケール、アクチエンゲゼルシャフト、マシーネン、ウント、アパラテファブリク Plug-in safety fittings for pressure lines
JP2001116178A (en) * 1999-10-18 2001-04-27 Nitto Kohki Co Ltd Socket for pipe joint
JP2004028310A (en) * 2002-06-28 2004-01-29 Nitto Kohki Co Ltd Pipe joint

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWM338301U (en) * 2008-02-20 2008-08-11 Hui-Yu Hsieh Insertion type quick rotary connector
TWM373991U (en) * 2009-09-08 2010-02-11 Hsieh Hui Yu Universal rotation joint

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03117797A (en) * 1989-06-29 1991-05-20 Atlas Copco Tools Ab Quick coupling
JPH03140692A (en) * 1989-06-29 1991-06-14 Atlas Copco Tools Ab Rotary valve-type rapid joint
JPH07504965A (en) * 1993-01-22 1995-06-01 ハンス、エティケール、アクチエンゲゼルシャフト、マシーネン、ウント、アパラテファブリク Plug-in safety fittings for pressure lines
JP2001116178A (en) * 1999-10-18 2001-04-27 Nitto Kohki Co Ltd Socket for pipe joint
JP2004028310A (en) * 2002-06-28 2004-01-29 Nitto Kohki Co Ltd Pipe joint

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10337657B2 (en) * 2013-09-11 2019-07-02 Inspired Designs Limited Tubular couplings and connectors
WO2017192681A1 (en) * 2016-05-04 2017-11-09 Swan Products Llc Multi-axis rotatable coupling element for a hose or pipe
US10619775B2 (en) 2016-05-04 2020-04-14 Swan Products, Llc Multi-axis rotatable coupling element for a hose or pipe
WO2019113337A1 (en) * 2017-12-07 2019-06-13 Tyco Fire Products Lp Adjustable swivel
CN111902665A (en) * 2017-12-07 2020-11-06 泰科消防产品有限合伙公司 Adjustable rotating member
US11660619B2 (en) 2017-12-07 2023-05-30 Tyco Fire Products Lp Adjustable swivel

Also Published As

Publication number Publication date
TWI500873B (en) 2015-09-21
TW201411023A (en) 2014-03-16
JP2013204683A (en) 2013-10-07
JP5832349B2 (en) 2015-12-16

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