JP2016080134A - Female pipe joint member, and pipe joint composed of male pipe joint member corresponding to female pipe joint member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cause a sleeve of a pipe joint to be displaced more positively to a locking member holding position.SOLUTION: A sleeve 16 is biased by a coil spring in a forward (a right side as seen viewed in the figure) of an axis line M and one side in a peripheral direction (a side in a clockwise direction as seen from a right side). The sleeve 16 is provided with an engaging protrusion receiving part 52 for receiving an engaging protrusion 50 arranged to protrude from an outer peripheral surface 10a of a joint main body 12. An axial line direction part 52a of the engaging protrusion receiving part has an axial line directional surface 52c that can be slid in respect to the engaging protrusion 50 when the sleeve 16 is displaced between a locking member holding position and a locking member releasing position, the axial directional surface is inclined toward an opposite side (a counter-clockwise direction as seen from a right side) against one side in a peripheral direction in a direction (a rearward in an axial line direction) facing toward the peripheral surface.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a female pipe joint member having a lock mechanism for preventing the connection with the corresponding male pipe joint member from being unexpectedly released, and the female pipe joint member and the corresponding male pipe joint member. It relates to a pipe joint consisting of

  Conventionally, in a female pipe joint member that is detachably connected to a corresponding male pipe joint member, a cylindrical joint body constituting a fluid passage and a peripheral wall portion of the joint body in the radial direction Radius between the locking position for locking with the locking groove of the male fitting member in the locking element holding hole formed so as to penetrate and the locking release position for releasing the locking of the male fitting member A locking element which is movable in the direction, and a locking element holding position and a locking element which are arranged so as to cover the outer peripheral surface of the joint body and engage the locking element from outside in the radial direction to hold the locking element in the locking position. A sleeve that is displaceable in the axial direction between the lock release position that allows movement to the lock release position, and a spring that biases the sleeve from the lock release position toward the lock holding position; There is something with. When the female pipe joint member is inserted into the joint body in a state where the sleeve is in the locking element releasing position and the locking groove is radially aligned with the locking element, the sleeve is spring-loaded. The urging force is moved toward the locking element holding position, whereby the locking element moves to the locking position and engages with the locking groove of the male fitting member, so that the male fitting member becomes the female fitting. It will be in the state connected with the member. In addition, when the male pipe coupling member is connected, the sleeve is displaced from the locking element holding position to the locking element release position against the biasing force of the spring, thereby releasing the connection with the male pipe coupling member. It has come to be. In this type of pipe joint, since the connection is released simply by displacing the sleeve in the axial direction, the sleeve is accidentally operated and the connection between the female pipe joint member and the male pipe joint member is released unexpectedly. Could have happened.

  In order to prevent such unexpected disconnection, for example, as shown in Patent Document 1, a female pipe joint member having a lock mechanism for limiting the displacement of the sleeve in the axial direction has been developed. In addition to the structure of the female pipe joint member described above, the female pipe joint member provided with this locking mechanism is formed on the sleeve and a locking projection provided on the outer peripheral surface of the joint body so as to protrude outward. And a projected receiving groove. The projection receiving groove includes an axial direction portion extending in the axial direction so as to receive the locking projection when the sleeve is displaced between the lock holding position and the lock release position in the axial direction, and the sleeve at the lock holding position. It consists of a circumferential portion extending in the circumferential direction so as to receive the locking projection when it is rotated in a certain state, and the sleeve is held by the locking projection by engaging the surface of the circumferential portion extending in the circumferential direction. It is designed to prevent displacement in the axial direction from the position toward the lock release position. That is, when the male pipe coupling member is connected, the sleeve at the locking element holding position is rotated in the circumferential direction so that the locking projection is received in the circumferential portion of the projection receiving groove. Even if an axial force is applied by mistake, the connection is not released.

JP 2000-193172 A

  In the female pipe joint member provided with the lock mechanism as described above, when the corresponding male pipe joint member is inserted to the coupling position, the sleeve is displaced in the axial direction to the locking element holding position by the biasing force of the spring. However, at this time, the protrusion receiving groove of the sleeve moves relative to the locking protrusion in the axial direction. Since the sleeve is also rotatable in the circumferential direction, the locking protrusion may come into contact with the surface of the protrusion receiving groove in the axial direction, and the locking protrusion and the protrusion receiving groove may slide. When the frictional resistance between the locking projection and the projection receiving groove is sufficiently small with respect to the urging force of the spring, the sleeve is automatically displaced to the locking element holding position. When the locking protrusion and the protrusion receiving groove are fixed due to foreign matter such as oil or oil, the resistance increases, and the sleeve is not displaced to the lock holding position by the spring biasing force. There is a possibility that the male pipe joint member is not properly connected. Although it is possible to reduce the possibility of such a state if a spring with a stronger urging force is used, if the urging force is increased, the spring becomes larger, and as a result, the pipe joint member itself also becomes larger. Will end up. Further, the force required to displace the sleeve from the locker holding position to the locker release position increases, and the operability when releasing the connection is also reduced.

  In view of such a point, the present invention reduces the resistance force when the sleeve having the protrusion receiving portion is moved with respect to the locking protrusion, and the sleeve is more reliably displaced to the locking element holding position. It is an object of the present invention to provide a female pipe joint member and a pipe joint including the female pipe joint member and a male pipe joint member that is detachably connected to the female pipe joint member.

That is, the present invention
A female fitting member detachably coupled to a corresponding male fitting member,
A cylindrical peripheral wall portion that receives the male pipe joint member, a locking projection that protrudes outward from the outer peripheral surface of the peripheral wall portion, and a locker holding hole that is provided to penetrate the peripheral wall portion in the radial direction. A joint body having,
A locking position that is set in the locking element holding hole, protrudes inward from the inner peripheral surface of the peripheral wall portion, and locks the male pipe fitting member received in the peripheral wall portion, and is positioned outside the locking position. A locking element displaceable between a locking release position for releasing the locking with the male pipe joint member;
A locking element holding position that is disposed so as to cover the outer peripheral surface of the peripheral wall portion and engages the locking element from the outside in the radial direction to hold the locking element in the locking position, and the peripheral wall from the locking element holding position. A sleeve that is displaceable between a locking element release position that displaces the locking element in a direction of an axis of the portion and allows the locking element to be in the unlocking position, and the locking element from the locking element holding position. An axial portion that receives the locking projection when displaced to the release position, and the sleeve is allowed to rotate to one side in the circumferential direction of the peripheral wall portion when in the lock holding position. A sleeve having a locking projection receiving portion including a circumferential portion for receiving the locking projection;
An urging member that urges the sleeve in the direction of the axis from the locking element release position toward the locking element holding position;
The axial direction portion of the locking projection receiving portion is slidable with respect to the locking projection when the sleeve is displaced between the locking element holding position and the locking element releasing position. The circumferential direction portion is connected to the axial direction surface and extends to the other side opposite to the one side in the circumferential direction, and the locking projection is received by the circumferential direction portion. Sometimes having a circumferential surface that prevents displacement of the sleeve in the direction of the axis toward the locking element release position, the axial surface being oriented in the circumferential direction in the direction toward the circumferential surface. A female fitting member is provided that is inclined to the other side.

  In the female pipe joint member, when the axial direction surface of the locking projection receiving portion provided on the sleeve is inclined, the sleeve is displaced in the axial direction from the locking element release position toward the locking element holding position. The axial surface is away from the locking projection. As a result, even if the axial surface and the locking projection are fixed by dust or grease, a force is applied so as to separate the fixed portion, so that the sleeve is held by the biasing force of the biasing member. It becomes possible to move to the position more reliably.

  Preferably, the urging member may be urged in the circumferential direction toward the one side in the circumferential direction.

  With such a configuration, when the corresponding male pipe joint member is connected, the sleeve moves in the circumferential direction of the spring so as to prevent the sleeve from being displaced in the axial direction to the lock release position. It is possible to automatically rotate in the circumferential direction by the urging force and to accept the locking projection in the circumferential portion of the locking projection receiving portion. Further, when the sleeve is in the locking element release position, the axial surface of the locking projection receiving portion is pressed in the circumferential direction against the locking projection, but the axial surface is inclined as described above. A part of the urging force in the circumferential direction of the urging member acts as a component force that presses the sleeve in the axial direction toward the locker holding position. This makes it possible to move the axial direction relative to the sleeve even when the same urging member is used as compared with a pipe joint member having a conventional locking mechanism in which the axial surface is parallel to the axial direction. The urging force can be further increased. Therefore, the sleeve can be displaced to the locking element holding position more reliably.

  Preferably, the sleeve is disposed between the inner peripheral surface of the sleeve and the outer peripheral surface of the peripheral wall portion, and is displaceable in the direction of the axis together with the sleeve, and is rotatable in the circumferential direction with respect to the sleeve. And a sleeve engaging the locker radially outwardly through the locker engagement ring when in the locker holding position. it can.

  In the state where the male pipe coupling member is connected, the male pipe coupling member is locked by the lock, so that the male pipe coupling member is positioned in the axial direction with respect to the female pipe coupling member. If you rotate it around, the lock will rotate. At this time, if the locking element and the sleeve are in direct contact with each other, the rotation of the locking element is transmitted to the sleeve and the sleeve rotates in the circumferential direction, so that the locking element can be moved to the locking element release position in the axial direction. There is a possibility of becoming. However, by providing the lock engaging ring as described above so that the sleeve does not directly contact the lock, the sleeve is prevented from rotating with the rotation of the male fitting member. It becomes possible to do.

Preferably,
The urging member comprises a coil spring having a first fixed end fixed to the sleeve and a second fixed end fixed to the peripheral wall;
The coil spring and the locking element engaging ring, wherein the locking element engaging ring is adjacent to the first fixed end of the coil spring and aligned with the coil spring in the axial direction. It can be arranged between the outer peripheral surface of the portion and the inner peripheral surface of the sleeve.

  Preferably, the locking protrusion is formed by partially embedding a spherical body in the outer peripheral surface of the peripheral wall portion.

  The present invention also provides a pipe joint comprising any one of the female pipe joint members described above and a male pipe joint member that is detachably coupled to the female pipe joint member.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a female pipe joint member according to the present invention and a pipe joint composed of a female pipe joint member and a male pipe joint member will be described with reference to the accompanying drawings.

It is a figure which shows the pipe joint which concerns on one Embodiment of this invention, Comprising: It is a figure which shows the pipe joint in the non-connecting state by which the female pipe joint member and the male pipe joint member are not connected. It is a figure in the connection state in which the female pipe joint member and the male pipe joint member of the pipe joint of FIG. 1 were connected. FIG. 3 is a partial cross-sectional view of a female pipe joint member taken along a line III-III in FIG. 1. It is a fragmentary sectional view of FIG. It is a fragmentary sectional view of FIG.

  As shown in FIGS. 1 and 2, a pipe joint 1 according to an embodiment of the present invention includes a female pipe joint member 2 and a male pipe joint member 4 that is detachably connected to the female pipe joint member 2. It is made up of.

  As shown in FIG. 3, the female pipe joint member 2 is disposed so as to cover the joint main body 12 having the peripheral wall portion 10 that receives the male pipe joint member 4 and the outer peripheral surface 10 a of the peripheral wall portion 10 of the joint main body 12. A sleeve 16 that is displaceable in the direction of the axis M of the peripheral wall 10 and the peripheral direction with respect to the peripheral wall 10 and a slide valve structure 18 disposed in the peripheral wall 10 are provided. The peripheral wall portion 10 of the joint body 12 constitutes a fluid passage 24 that penetrates in the direction of the axis M from the front end portion 20 that receives the male pipe joint member 4 to the rear end portion 22 where the male screw is formed. Further, a locker holding hole 26 formed so as to penetrate in the radial direction is provided, and a locker 28 is set in the locker holding hole 26. The lock 28 protrudes inward from the inner peripheral surface 10b of the peripheral wall 10 in the lock holding hole 26, and locks the male pipe joint member 4 received in the peripheral wall 10 (FIG. 5). And it becomes a position outside a locking position, and it can be displaced between the locking release position (FIG. 4) which cancels | releases latching with the male pipe joint member 4. FIG. Between the inner peripheral surface 16 a of the sleeve 16 and the outer peripheral surface 10 a of the peripheral wall portion 10, the coil spring 32 and the coil spring 32 and the axis M are positioned adjacent to the coil spring 32 at a position in front of the coil spring 32. The locker engaging ring 34 arranged in a state aligned in the direction is accommodated.

  As shown in FIGS. 4 and 5, the coil spring 32 includes a front end portion (first fixed end portion) 32 a bent so as to extend radially outward, and a rear end bent so as to extend rearward of the axis M. Part (second fixed end part) 32b, the front end part 32a is inserted and fixed in the spring fixing hole 40 of the sleeve 16, and the rear end part 32b is inserted and fixed in the spring fixing hole 42 of the peripheral wall part 10. ing. The coil spring 32 is set between the front end portion 32a and the rear end portion 32b so as to be compressed in the direction of the axis M and twisted in the circumferential direction. Thus, it is urged forward in the direction of the axis M, and is also urged in the circumferential direction in a clockwise direction as viewed from the front (direction indicated by arrow R).

  Since the locking element engaging ring 34 is disposed between the front end portion 32a of the coil spring 32 and the inner peripheral surface shoulder portion 16b of the sleeve 16, when the sleeve 16 moves in the direction of the axis M, the axis 16 Move in the direction of M. On the other hand, since it is rotatable with respect to the sleeve 16 in the circumferential direction, even if the sleeve 16 rotates in the circumferential direction, it basically does not rotate together.

  As shown in FIG. 3, a lock ball fitting hole 46 is formed in the peripheral wall portion 10 of the joint body 12, and a spherical lock ball 48 is embedded and fixed in the lock ball fitting hole 46. . A part of the lock ball 48 protrudes outward from the outer peripheral surface 10 a of the peripheral wall portion 10, and a locking protrusion 50 is formed by the protruding portion. The sleeve 16 is formed with a locking projection receiving portion 52 for receiving the locking projection 50, and the locking projection 50 is received in the locking projection receiving portion 52. The locking projection receiving portion 52 includes an axial direction portion 52a that receives the locking projection 50 when the sleeve 16 is moved rearward against the urging force in the direction of the axis M of the coil spring 32 (FIG. 1), The sleeve 16 includes a circumferential portion 52b that receives the locking projection 50 when the sleeve 16 is rotated to the arrow R side by the biasing force in the circumferential direction of the coil spring 32 (FIG. 2). The axial direction portion 52a has an axial direction surface 52c that is slidable with respect to the locking projection 50 when the sleeve 16 is displaced from the position shown in FIG. 1 to the position shown in FIG. The circumferential portion 52b has a circumferential surface 52d that is connected to the axial surface 52c and extends in the circumferential direction toward the side opposite to the arrow R side.

  The slide valve structure 18 is disposed so as to be slidable in the direction of the axis M with respect to the cylindrical base 54 fixedly held on the inner peripheral surface 10 b of the peripheral wall 10 and the inner peripheral surface 54 a of the base 54. A slide valve body 56, a coil spring 58 that urges the slide valve body 56 forward in the direction of the axis M with respect to the base portion 54, and a locker holding collar 60 fixedly held at the front end portion 56a of the slide valve body 56. And. An O-ring 62 is arranged on the outer peripheral surface 54 b of the base portion 54, and the O-ring 62 is sealingly engaged between the outer peripheral surface 54 b of the base portion 54 and the inner peripheral surface 10 b of the peripheral wall portion 10. 1, 3, and 4, the slide valve body 56 is displaced forward by the urging force of the coil spring 58, and an O-ring 64 attached to the rear end portion 56 b of the slide valve body 56. Is in a state of sealingly engaging with an inclined sealing surface 54 c formed at the rear end of the base 54. As a result, the fluid passage 24 is closed between the front end 20 and the rear end 22 of the joint body 12. 2 and 5, the front end surface 4a of the male pipe joint member 4 comes into contact with the face seal ring 66 attached to the front end portion 56a of the slide valve body 56, so that the slide valve body 56 is When pushed backward, the sealing engagement between the O-ring 64 of the rear end portion 56b of the slide valve body 56 and the inclined sealing surface 54c of the base portion 54 is released. Accordingly, the fluid passage 24 communicates between the front end portion 20 and the rear end portion 22 via the communication hole 56 c of the slide valve body 56. Further, a sliding seal ring 68 having an X-shaped cross section is disposed on the outer peripheral surface 56 d of the slide valve body 56. When the slide valve body 56 moves back and forth, the sliding seal ring 68 is sealingly engaged while sliding between the outer peripheral surface 56d of the slide valve body 56 and the inner peripheral surface 54a of the base 54, The fluid in the fluid passage 24 is prevented from leaking outside the pipe joint 1.

  In the non-connected state shown in FIGS. 1, 3, and 4, the sleeve 16 is displaced rearward together with the lock engaging ring 34, and the lock 28 is moved outward to reach the lock releasing position. This is the lock release position that permits the above. At this time, the slide valve body 56 is displaced forward by the urging force of the coil spring 58, whereby the locking element holding collar 60 moves the locking element 28 to the outside and supports the locking element 28 from the inside in the radial direction to release the locking. Hold in position. A part of the locking element 28 at the unlocking position protrudes outward from the outer peripheral surface 10 a of the peripheral wall portion 10, and a forward engagement of the locking element engaging ring 34 is formed at a portion protruding outward of the locking element 28. The surface 34a abuts, and the locker engaging ring 34 and the sleeve 16 are held so as not to be displaced further forward. At this time, the locking protrusion 50 is received in the axial direction part 52a of the locking protrusion receiving part 52 of the sleeve 16 (FIG. 1). As described above, the coil spring 32 also biases the sleeve 16 toward the arrow R side in the circumferential direction, so that the inclined axial surface 52c of the axial portion 52a is pressed against the locking protrusion 50. ing.

  When the male pipe joint member 4 is inserted into the fluid passage 24 of the female pipe joint member 2 in the unconnected state from the front end portion 20 of the peripheral wall portion 10, the front end face 4a of the male pipe joint member 4 slides. The slide valve body 56 is gradually pushed backward in a state where it abuts on the face seal ring 66 at the front end of the valve body 56 and is in sealing engagement with the slide valve body 56. The locking element holding collar 60 also moves rearward together with the slide valve body 56, and eventually moves to a position where the locking element 28 is no longer supported. Further, when the male pipe coupling member 4 is inserted and the locking groove 4b of the male pipe coupling member 4 is positioned inside the lock 28, the lock 28 is pushed by the lock engaging ring 34 to the inside. A state in which a part of the lock 28 protrudes inward from the inner peripheral surface 10b of the peripheral wall 10 and enters the locking groove 4b of the male pipe joint member 4 to lock the male pipe joint member 4 It becomes. At this time, since the locking element 28 does not protrude from the outer peripheral surface 10a of the peripheral wall portion 10, the engagement in the direction of the axis M between the locking element engagement ring 34 and the locking element 28 is released. . The sleeve 16 moves forward together with the locker engaging ring 34 by the urging force of the coil spring 32 in the direction of the axis M, and as shown in FIG. It becomes a locker holding position which engages indirectly from the outside and holds the locker 28 in the locked position. In this connected state, the locker 28 is directly supported from the outside by the inner peripheral engagement surface 34 b of the locker engagement ring 34. When the sleeve 16 is in this locker holding position, the locker 28 cannot move outward from the state of being fitted in the locking groove 4b of the male pipe joint member 4, so that the male pipe joint member 4 is It will be in the state which cannot be removed from the female pipe joint member 2. FIG. In addition, a stop ring 70 is attached to the front side of the locking element holding hole 26 in the peripheral wall portion 10, and the locking element engaging ring 34 is moved forward by the locking element engaging ring 34 and the sleeve 16. It is stopped at a position where it abuts against the stop ring 70.

  As described above, since the coil spring 32 also biases the sleeve 16 in the circumferential direction, when the pipe joint 1 is in the non-connected state shown in FIG. 1, the inclined axial surface 52c of the axial direction portion 52a. Is pressed against the locking projection 50. Therefore, when the male pipe coupling member 4 is inserted into the female pipe coupling member 2 and the sleeve 16 moves forward from the locking element release position toward the locking element holding position by the biasing force of the coil spring 32, The sleeve 16 moves while sliding the axial surface 52 c with respect to the locking projection 50. Therefore, in order for the sleeve 16 to move to the locking element holding position, the urging force of the coil spring 32, particularly in the direction of the axis M, overcomes the sliding friction resistance between the axial surface 52c and the locking projection 50. Must be large enough. As described above, the axial surface 52c of the female pipe joint member 2 is inclined in the direction toward the circumferential surface 52d in the direction opposite to the biasing direction (arrow R) of the coil spring 32. When the sleeve 16 is displaced in the direction of the axis M from the locking element release position toward the locking element holding position, the axial direction surface 52c moves away from the locking projection 50. The sliding frictional resistance between the locking projection 50 and the axial surface 52c when displacing in the direction M is reduced. In addition, since the inclined axial surface 52c is engaged with the locking projection 50, a part of the urging force of the coil spring 32 in the circumferential direction causes the sleeve 16 to face the locker holding position and the axis M It acts as a component force that pushes forward in the direction of. Therefore, the biasing force in the direction of the axis M with respect to the sleeve 16 can be increased even when the coil spring 32 having the same size is used as compared with the conventional one in which the axial direction surface is parallel to the direction of the axis. It is possible to displace the sleeve 16 to the locking element holding position more reliably.

  When the sleeve 16 moves to the locking element holding position in the direction of the axis M, as shown in FIG. 2, the sleeve 16 is automatically rotated in the circumferential direction by the urging force of the coil spring 32 in the circumferential direction, and the locking projection 50 is moved. It will be in the state received in the circumferential direction part 52b of the latching protrusion reception part 52. FIG. In this state, even if the sleeve 16 is moved rearward in the direction of the axis M, the circumferential surface 52d of the locking projection receiving portion 52 contacts the locking projection 50, so that the sleeve 16 is moved to the lock release position. It becomes impossible to displace until. Therefore, in order to release the connection with the male pipe coupling member 4, the sleeve 16 is first rotated in the circumferential direction opposite to the biasing direction (arrow R) in the circumferential direction of the coil spring 32. It is necessary to displace backward in the direction of the axis M. With this configuration, even if a force in the direction of the axis M is applied to the sleeve 16 by mistake, the connection between the female pipe joint member 2 and the male pipe joint member 4 is not released. . In addition, when the male pipe joint member 4 is rotated around the direction of the axis M with respect to the female pipe joint member 2 in the connected state, the lock 28 also rotates accordingly. 16 is configured to indirectly engage with the lock 28 via a lock holding collar 60 that is rotatable with respect to the sleeve 16, so that the rotational force of the lock 28 is applied to the sleeve 16. It is not transmitted directly. That is, as the male pipe coupling member 4 rotates, the sleeve 16 rotates and the locking projection 50 comes out of the circumferential portion 52b of the locking projection receiving portion 52 so that the sleeve 16 is unlocked in the direction of the axis M. It is designed to prevent being able to move to

  In the above embodiment, the coil spring 32 urges the sleeve 16 in the circumferential direction, but it is not always necessary to do so, and only the direction of the axis M is attached to the sleeve 16. You may make it add power. In that case, since the axial surface 52c of the locking projection receiving portion 52 is not pressed against the locking projection 50, the sliding frictional resistance is reduced. Further, the axial surface 52c of the locking projection receiving portion 52 provided on the sleeve 16 is inclined, and when the sleeve 16 is displaced from the locking element release position toward the locking element holding position, the axial direction surface 52c is locked. It comes away from the protrusion 50. For this reason, even if the axial surface 52c and the locking projection 50 are fixed by dust or grease, a force is applied so as to separate the fixed part, so that the fixing can be easily taken, and the biasing force of the coil spring The sleeve 16 is more reliably moved to the lock holding position.

  Pipe fitting 1; Female pipe fitting member 2; Male pipe fitting member 4; Front end face 4a; Locking groove 4b; Peripheral wall part 10; Outer peripheral face 10a; Inner peripheral face 10b; 16a; inner peripheral shoulder 16b; slide valve structure 18; front end 20; rear end 22; fluid passage 24; locker holding hole 26; locker 28; coil spring 32; front end (first fixed end) ) 32a; rear end (second fixed end) 32b; locker engaging ring 34; front engaging surface 34a; inner peripheral engaging surface 34b; spring fixing hole 40; spring fixing hole 42; 46; lock ball 48; locking projection 50; locking projection receiving portion 52; axial direction portion 52a; circumferential direction portion 52b; axial direction surface 52c; circumferential surface 52d; base 54; inner peripheral surface 54a; Inclined sealing surface 54c; slide valve body 56; front Part 56a; rear end part 56b; communication hole 56c; outer peripheral surface 56d; coil spring 58; locker retaining collar 60; O ring 62; O ring 64; face seal ring 66; M; Arrow R

Claims (6)

A female fitting member detachably coupled to a corresponding male fitting member,
A cylindrical peripheral wall portion that receives the male pipe joint member, a locking projection that protrudes outward from the outer peripheral surface of the peripheral wall portion, and a locker holding hole that is provided to penetrate the peripheral wall portion in the radial direction. A joint body having,
A locking position that is set in the locking element holding hole, protrudes inward from the inner peripheral surface of the peripheral wall portion, and locks the male pipe fitting member received in the peripheral wall portion, and is positioned outside the locking position. A locking element displaceable between a locking release position for releasing the locking with the male pipe joint member;
A locking element holding position that is disposed so as to cover the outer peripheral surface of the peripheral wall portion and engages the locking element from the outside in the radial direction to hold the locking element in the locking position, and the peripheral wall from the locking element holding position. A sleeve that is displaceable between a locking element release position that displaces the locking element in a direction of an axis of the portion and allows the locking element to be in the unlocking position, and the locking element from the locking element holding position. An axial portion that receives the locking projection when displaced to the release position, and the sleeve is allowed to rotate to one side in the circumferential direction of the peripheral wall portion when in the lock holding position. A sleeve having a locking projection receiving portion including a circumferential portion for receiving the locking projection;
An urging member that urges the sleeve in the direction of the axis from the locking element release position toward the locking element holding position;
The axial direction portion of the locking projection receiving portion is slidable with respect to the locking projection when the sleeve is displaced between the locking element holding position and the locking element releasing position. The circumferential direction portion is connected to the axial direction surface and extends to the other side opposite to the one side in the circumferential direction, and the locking projection is received by the circumferential direction portion. Sometimes having a circumferential surface that prevents displacement of the sleeve in the direction of the axis toward the locking element release position, the axial direction of the sleeve in the direction toward the circumferential surface. A female pipe joint member that is inclined to the other side.   The female pipe joint member according to claim 1, wherein the biasing member is also biased in the circumferential direction toward the one side in the circumferential direction.   A lock disposed between the inner peripheral surface of the sleeve and the outer peripheral surface of the peripheral wall portion, displaceable in the direction of the axis together with the sleeve, and rotatable relative to the sleeve in the circumferential direction A child engagement ring is further provided, wherein the sleeve is adapted to engage the locker radially outwardly via the locker engagement ring when in the locker holding position. The female pipe joint member according to 1 or 2. The urging member comprises a coil spring having a first fixed end fixed to the sleeve and a second fixed end fixed to the peripheral wall;
The coil spring and the locking element engaging ring, wherein the locking element engaging ring is adjacent to the first fixed end of the coil spring and aligned with the coil spring in the axial direction. The female pipe joint member according to claim 3, wherein the female pipe joint member is disposed between the outer peripheral surface of the portion and the inner peripheral surface of the sleeve.   The female pipe joint member according to any one of claims 1 to 4, wherein the locking protrusion is formed by partially embedding a spherical body in an outer peripheral surface of the peripheral wall portion.   A pipe joint comprising: the female pipe joint member according to any one of claims 1 to 5; and a male pipe joint member that is detachably coupled to the female pipe joint member.

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