TW201411023A - Female connector and pipe end having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the wear of the sealing member seals between a female connector and a male connector. SOLUTION MEANS: An sealing member with end face is configured at an annular sections in the through-hole of the ball valve supported by a casing member so as to be rotatable about a rotation center axis, so that the front end face of the male connector inserted into the through-hole abuts against the end face sealing member. When the male connector is inserted into the through-hole to rotate about the rotation center axis along the slot opening of the casing member until the installation position of the mail connector is reached, an engaging edge part, which is engaged at both sides of a slot opening of the male connector, will be slidingly engaged with the male connector, such that the male connector gradually presses toward the end face sealing member, and as the male joint is reaches the installation position, the front end face of the male joint will press the end face sealing member against the annular section, thereby forming a sealing engagement between the ball valve and the male connector.

Description

Female connector and pipe joint having the same

The present invention relates to a female joint capable of improving the sealing property when connected to a male joint, and a female joint provided with the female joint.

Figure 10 is a diagram showing a prior art pipe joint. In the pipe joint, the female joint 1 is provided with the ball valve 2, and the ball valve 2 is inclined with the through hole 3, and after inserting the male joint 4 into the through hole, the male joint 4 is rotated while rotating the ball valve 4 The female joint 1 is integrated into a coaxial shape, whereby the joint of the two joints is performed (for example, refer to Japanese Patent Laid-Open Publication No. 2002-168387).

In the pipe joint, the seal ring 5 disposed in the ball valve 2 is slidably engaged with the front end portion of the male joint 4 inserted in the ball valve 2, thereby ensuring the seal between the male joint 4 and the ball valve 2.

However, when the sliding is to be engaged, a large frictional force acts on the sealing ring, so that there is a repeated sealing member when the male connector is attached or detached. Easy to wear problems.

In view of the above problems, the present invention provides a structure for reducing the wear of a sealing member caused by attachment and detachment of a male joint, thereby improving durability, and is configured to be capable of pressing a sealing member required for easy load sealing. The female connector of the load and the pipe joint having the female connector are for the purpose.

That is, the female connector provided by the present invention is a female connector capable of attaching and detaching a male connector having a engaging portion on a peripheral surface thereof, the female connector having a tubular joint body and a ball valve and a shell member, the cylindrical joint The main body has a first through hole penetrating from one end to the other end in the longitudinal direction, and a duct is connected to the one end, the ball valve having a spherical outer surface and a diameter direction through the outer surface a valve body of the through hole; and an end face sealing member disposed in the second through hole, wherein the ball valve is disposed on the other end side of the joint body, and the second through hole has the above-mentioned a male connector insertion portion to be inserted into the connector; an annular segment portion to be adjacent to a distal end surface of the male connector inserted into the male connector insertion portion; and a continuous annular segment portion facing the male connector insertion portion a communication portion that communicates with the third through hole of the male connector that has been inserted in the reverse direction, and the end face sealing member is disposed in the annular segment portion, and the male connector is inserted The male connector into the upper portion of the male tab When the third through hole and the communication portion of the second through hole are in a communicating state, the front end surface of the male joint abuts between the front end surface and the annular portion, and the shell member faces the above The joint body is fixed and configured to hold the ball valve such that the ball valve can close the first rotation position of the other end of the first through hole by the outer surface of the valve body and the second through hole at the length The direction of the second rotation position connected to the first through hole is rotatable about a central axis of rotation passing through the center of the valve body, and the shell member has an insertion opening and a groove opening, and the insertion opening is configured to be The male connector is inserted into the male connector insertion portion of the valve body of the ball valve located at the first rotational position, and the groove opening portion is formed to extend from the insertion port, and the ball valve is inserted into the male connector insertion portion. When the above-mentioned male connector is rotated between the first rotational position and the second rotational position, the movement of the male joint can be allowed, and further, the groove is defined The two side edges of the opening are provided with an engaging edge portion to be slidably engaged with the engaging portion of the male joint, and the engaging edge portion is configured such that the ball valve in which the male joint is inserted is located in the second The distance from the position at which the engaging edge portion is engaged with the engaging portion to the rotation center axis is shorter than the distance from the boundary position of the engaging edge portion to the rotation center axis at the rotation position. In the second rotational position, the engaging edge portion urges the engaging portion toward the rotation center axis of the ball valve, and the front end surface of the male joint presses the end face sealing member toward the annular segment portion.

In the female joint, the end face sealing member for engaging the male joint and the ball valve is sealed, and the annular section of the second through hole of the ball valve and the front end surface of the male joint are configured to be inserted in the male joint. Since the end face sealing member is not pressed against the male joint, the present invention can greatly reduce wear and improve durability as compared with the prior art sliding engagement sealing member. Further, when the ball valve into which the male connector is inserted is located at the second rotational position, the distance from the position at which the engaging edge portion is engaged with the engaging portion to the central axis of rotation is formed to be closer to the engaging edge portion of the opening portion of the groove. The distance from the boundary position of the insertion port to the central axis of rotation is also short. The end face of the male connector at the second rotational position can sufficiently press the end face sealing member toward the annular segment to form a seal, thereby enabling the pressing of the end face sealing member. It is not large enough to form a seal engagement outside the second rotational position. In this way, the reaction force from the end face sealing member during the rotation is relatively small, so that the sliding friction of the engaging portion of the male joint and the engaging edge portion of the groove opening portion is relatively small, and the male connector can be made The load at the time of rotation is small during the middle of the journey until the second rotational position is reached.

Specifically, the engaging edge portion may be configured to be curved such that when the ball valve into which the male connector has been inserted is rotated from the first rotational position toward the second rotational position, the engaging edge portion and the male connector The distance from the portion where the engaging portion is engaged to the rotation center axis of the ball valve is gradually shortened as the ball valve is rotated from the first rotational position to the second rotational position.

The ball valve rotates the male joint from the first rotational position to the second rotational position, which causes the engagement portion of the male joint to slowly rotate toward the ball valve. The central axis is pushed so that the end face sealing member is pressed by the front end surface of the male joint, so that it is not necessary to press the male joint toward the ball valve in order to push the end face sealing member, and the end face sealing member can be subjected to the rotation of the male joint. Pushing causes the joint body and the ball valve to be sealed.

More specifically, the above-described bending of the engaging edge portion may be formed in a circular arc shape centering on the joint main body side in the longitudinal direction from the rotation center axis of the ball valve.

Since the bending of the engaging edge portion is a circular arc shape, the male joint can be rotated more smoothly.

Further, in the present invention, the ball valve may be configured to include a shaft portion extending from the valve body to the outer side of the casing member along the rotation center axis, and the shaft portion is configured to be rotatably supported at The shell member is rotated together with the valve body, and has a notch portion on a peripheral surface of the shaft portion. The female joint may be configured to have a sleeve slidable toward the longitudinal direction on the outer side of the shell member. When the ball valve is located at the second rotational position, the sleeve engages the notch portion of the ball valve, thereby preventing the ball valve from rotating.

According to the above configuration, when the female connector is connected to the male connector so that the ball valve is positioned at the second rotational position, the ball valve and the male connector can be prevented from being erroneously rotated toward the first rotational position to cause the female connector and the male connector to be disconnected.

Specifically, the notch portion may be configured to have a sector cross section having a central angle of 90 degrees with the center of the shaft portion as a vertex.

When the notch portion is configured in the above shape, it and the sleeve The clamping area will be larger and it will be more secure.

Further, it is preferable that the ball valve is configured to include a seal member holding member that is formed to be formed along a peripheral wall of the male joint insertion portion of the second through hole, and the seal member holding member is configured to be The end surface sealing member disposed in the annular segment portion is engaged with the end surface sealing member to hold the end surface sealing member, and the outer surface of the valve body may be provided with a recess on the outer surface The shaft mounting portion, wherein the shaft portion is provided separately from the valve body, and the engaging portion provided at a proximal end portion of the shaft portion is engaged with the shaft mounting portion to be mounted on the valve The main body is engaged with the sealing member holding member to lock the sealing member holding member to the second through hole.

By holding the end face sealing member in the annular segment portion by the sealing member holding member, the shape of the second through hole including the annular segment portion can be relatively simply processed, and the end face sealing member can be surely held at the same time. Inside the second through hole. Further, the shaft portion and the valve body are separate bodies, and the assembly work when the ball valve group is to be inserted into the casing member is relatively easy.

The present invention further provides a pipe joint comprising the female joint shown above and a male joint shown below, that is, the male joint is configured to be inserted through the insertion opening of the above-mentioned shell member at the first a male joint of the male connector insertion portion of the valve body of the ball valve at a rotational position, having an engaging portion and a front end surface, wherein the engaging portion is to be rotated from the first rotational position to the second rotational position And slidingly engaging with the engaging edge portion of the shell member, wherein the engaging portion is configured to be When the ball valve is located at the second rotation position, the engagement edge portion is pressed toward the rotation center axis of the ball valve, and the front end surface is configured to be pushed by the end face sealing member when the ball valve is located at the second rotation position. Pressure.

Hereinafter, embodiments of the female joint according to the present invention and a pipe joint including the female joint will be described with reference to the drawings.

8‧‧‧ pipe joint

10‧‧‧Female connector

12‧‧‧Connector body

14‧‧‧Ball valve

16‧‧‧Shell components

18‧‧‧End

20‧‧‧The other end

22‧‧‧1st through hole

24‧‧‧Threaded part

26‧‧‧Aperture sealing member

28‧‧‧Exhaust suppression components

30‧‧‧ outer surface

32‧‧‧2nd through hole

34‧‧‧Axis Mounting Department

34-1‧‧‧Central Facial

34-2‧‧‧ Segment

34-3‧‧‧End wall

36‧‧‧ valve body

38‧‧‧Ring section

40‧‧‧End face sealing member

42‧‧‧ Sealing member holding member

44‧‧‧Axis

46‧‧‧ front end

48‧‧‧ engaging ribs

50‧‧‧Flange

50-1‧‧‧Care Department

50-2‧‧‧Snap protrusion

50-3‧‧‧Snap protrusion

52‧‧‧Axis snap hole

54‧‧‧ inner surface

56‧‧‧Rotation center axis

57‧‧‧Arc Center

58‧‧‧ casing

59‧‧‧ front face

60‧‧‧ Spring

62‧‧‧ Male connector

64‧‧‧Inlet

66‧‧‧ Male connector insertion

67‧‧‧Connecting Department

68‧‧‧ front face

70‧‧‧Clock Department

72‧‧‧Slot opening

74‧‧‧Card edge

76‧‧‧3rd through hole

78‧‧‧Border section

80‧‧‧ Length direction axis

82‧‧‧ position

84‧‧‧Bend

86‧‧‧Gap section

86-1‧‧‧ Straight line

86-2‧‧‧ arc

88‧‧‧Snap groove

92‧‧‧Lip

96‧‧‧Small gap

98‧‧‧Exhaust outlet

Fig. 1 is a side cross-sectional view showing a pipe joint according to the present invention in which a female joint and a male joint are joined.

Fig. 2 is an exploded perspective view of the female connector of the present invention.

Figure 3A is a side cross-sectional view of the pipe joint of the present invention in a state in which the male connector is detachable.

Fig. 3B is a side cross-sectional view showing the pipe joint according to the present invention in a state after the male joint has been rotated from the state of Fig. 3A.

Fig. 3C is a side cross-sectional view showing the pipe joint according to the present invention in a state after the male joint has been rotated from the state of Fig. 3B.

Fig. 3D is a side cross-sectional view showing the pipe joint according to the present invention in a state after the male joint has been rotated from the state of Fig. 3C.

Fig. 3E is a side cross-sectional view showing the pipe joint according to the present invention in a state in which the male connector is rotated to be connected to the female connector in the state of Fig. 3D.

Figure 4 is a side cross-sectional view of the shell member.

Figure 5 is a perspective view of the pipe joint in which the male connector is detachable.

Fig. 6 is a perspective view of the pipe joint when the male connector is connected.

Fig. 7 is a perspective view of the pipe joint in which the ball valve is in the rotation preventing state in the connected state.

Fig. 8A is a perspective view of the exhaust suppressing member and the ball valve in the first rotational position.

Fig. 8B is a perspective view of the exhaust suppressing member and the ball valve of Fig. 8A.

Fig. 9A is a perspective view of the exhaust suppressing member and the ball valve at the second rotational position.

Fig. 9B is a perspective view of the exhaust suppressing member and the ball valve of Fig. 9A.

Figure 10 is a view showing a prior art pipe joint.

[Embodiment of the Invention]

As shown in Figs. 1 and 2, the female connector 10 of the pipe joint 8 according to the present invention has a joint body 12 and a ball valve 14 and a casing member 16 for holding the ball valve 14. The joint main body 12 is provided with a first through hole 22 penetrating from the one end 18 to the other end 20 in the longitudinal direction, and a convex thread portion 24 for connecting the conduit connected to the fluid supply source is provided on the outer peripheral surface of the one end 18. . The inner circumference of the other end 20 is arranged with the first through The bore 22 is coaxial and seals the annular seal member 26 between the snap joint body 12 and the ball valve 14. Further, an annular exhaust gas suppressing member 28 is disposed on the outer side in the radial direction of the annular seal member 26 to abut against the end surface of the other end 20 of the joint main body 12. The annular seal member 26 and the exhaust suppressing member 28 are held in the case member 16 together with the ball valve 14 that is disposed to be engaged with the annular seal member 26 and the exhaust suppressing member 28. The ball valve 14 is composed of a valve body 36, an annular end face sealing member 40, a sealing member holding member 42, and two shaft portions 44. The valve body 36 has a spherical outer surface 30 through which the outer surface 30 passes. The second through hole 32 in the diameter direction; and the two shaft mounting portions 34 provided on the outer surface 30 in the diameter orthogonal to the second through hole 32, and the annular end face sealing member 40 is disposed The annular segment portion 38 provided in the second through hole 32 is inserted into the second through hole 32 of the valve body 36 to be engaged with the peripheral portion of the end surface of the end face sealing member 40. The end face sealing member is pressed and held by the annular segment portion 38, and the two shaft portions 44 are respectively engaged and held by the two shaft mounting portions 34. The second through hole 32 is configured to be fitted with the male joint 62 so that the distal end surface 68 of the male joint 62 is sealed and engaged with the end surface of the end surface sealing member 40.

The shaft attachment portion 34 is a spherical outer surface 30 that is recessed and formed in the valve body 36, and has a central flat portion 34-1 and two sides disposed on the central plane 34-1 and extending parallel to the second through hole 32. Segment 34-2. The center flat portion 34-1 is recessed from the one end of the valve body 36 in a planar shape parallel to the second through hole 32, and extends to the end wall 34-3 formed to have the spherical outer surface 30. The so-called "recessed" here means The spherical outer surface 30 is recessed in the radial direction, and of course, the groove can be formed, and the chamfering is processed into a planar shape. The shaft portion 44 has a substantially circular flange 50 at a proximal end portion thereof, and an engaging portion 50 to be fitted to the central flat portion 34-1 of the shaft mounting portion 34 is recessed at an end surface of the flange 50. -1, a pair of engaging projections 50 to be engaged with the second through holes 32 and to be engaged with the segmented portions 34-2 of the shaft mounting portion 34 are retained on both sides of the engaging portion 50-1, and A locking projection 50-3 is retained at an axial end of one of the engaging portions 50-1. The engaging portion 50-1 is also engaged with the engaging rib 48 provided at the peripheral edge of one end of the sealing member holding member 42, whereby the engaging projection 50-3 can lock the engaging rib 48 to seal the member holding member 42. Keep it in the direction of insertion.

The ball valve 14 is configured such that the shaft portion 44 is rotatably supported by the shaft engaging hole 52 of the case member 16 so as to be able to pass around the rotation center axis 56 of the two shaft portions 44 between the joint body 12 and the case member 16. Turn. On the outer periphery of the case member 16, a sleeve 58 for preventing rotation of the ball valve 14 and a spring 60 for bucking the sleeve 58 in a direction to engage with the shaft portion 44 are provided.

When the ball valve 14 of the present embodiment is to be assembled, first, the two shaft portions 44 are respectively disposed to pass through the respective shaft engagement holes 52 from the inside of the case member 16, and the end face sealing member 40 and the seal member holding member 42 are inserted. It is disposed in the second through hole 32. The valve body 36 in the above-described state is inserted into the case member together with the end face sealing member 40 and the sealing member holding member 42 so that the central flat portion 34-1 of the shaft mounting portion 34 can be engaged in the engaging portion 50-1. 16 internal. At this time, the sealing member holding member 42 The engaging rib 48 is locked by the locking projection 50-3 of the shaft portion 44. Next, the joint body 12 to which the annular seal member 26 and the exhaust suppressing member 28 have been attached is screwed to the case member 16, whereby the annular seal member 26 is sealed and fitted to the spherical shape of the valve body 36. Outer surface 30. At this time, a gap is formed between the spherical inner surface 54 of the exhaust suppressing member 28 and the spherical outer surface 30 of the valve body 36 without contact. It is possible to have such a simple assembly, and it is entirely based on the member in which the shaft portion 44 is an individual body.

The male connector 62 has a tubular shape as a whole, and an annular engaging portion 70 is recessed on the outer peripheral surface thereof. When the male connector 62 is to be coupled to the female connector 10, first, as shown in FIG. 3A, the ball valve 14 is positioned such that the second through hole 32 of the ball valve 14 faces 60 degrees in the longitudinal direction of the joint body 12. When the state of the first rotational position in the direction is the detachable state, the male connector 62 is inserted into the second through hole 32 of the ball valve 14 through the insertion port 64 of the case member 16. At this time, the outer peripheral surface of the front end portion of the male joint 62 contacts the inner peripheral surface of the seal member holding member 42 that has been inserted into the male joint insertion portion 66 of the second through hole 32, and the front end surface 68 is already abutted on the end surface. The state of the sealing member 40. The other end 20 side of the first through hole 22 of the joint main body 12 is closed by the outer surface 30 of the ball valve 14 and the annular seal member 26, and the fluid in the first through hole 22 is prevented from leaking out. Next, when the male connector 62 is rotated in the direction of the arrow A in the third drawing, the concave engaging portion 70 provided on the outer peripheral surface of the male connector 62 is engaged with the groove opening portion 72 of the case member 16. The engaging edge portion 74 provided on both side edges of the fixed use. Plus, as shown in Figure 3E, when When the male connector 62 is rotated to rotate the ball valve 14 so as to be in the second rotational position in which the second through hole 32 is integrated with the first through hole 22 in the longitudinal direction, the female connector 10 and the male connector 62 are connected to each other. The other end 20 of the 12 and the outer surface 30 of the ball valve 14 are in a state in which the first through hole 22 and the communication portion 67 of the second through hole are in communication with each other in a state in which the annular seal member 26 is sealed and engaged. In addition, as shown in the following description, the front end surface 68 of the male joint 62 and the annular end portion 38 of the ball valve 14 are in a state in which the pressing end face sealing member 40 is formed to be sealed and engaged, and the second through hole 32 and the first The through hole 76 is in a connected state. In other words, in the connected state, the first through hole 22, the second through hole 32, and the third through hole 76 are in communication, and the two sealing members 26 and 40 seal the through holes to the outside.

Next, the sealing engagement of the end face sealing member 40 between the front end face 68 of the male joint 62 and the annular segment portion 38 of the ball valve 14 will be described. To form the seal engagement, it is necessary to flatten the end face sealing member 40 between the front end face 68 and the annular segment portion 38 so as to be pressed against the front end face 68 and the annular segment portion 38. This pressing is performed by a rotation operation in which the male joint 62 is rotated from the detachable state to the coupled state by the structure shown below. The male connector 62 is configured such that the engaging portion 70 is slidably engaged with the engaging edge portion 74 of the groove opening portion 72 of the case member 16 and is rotated from the detachable state (Fig. 3A) to the connected state (Fig. 3E). ). The engaging edge portion 74, when viewed in a side cross-sectional view as shown in Fig. 4, is from the boundary portion 78 with the insertion opening 64 to the position 82 where the longitudinal axis 80 intersects the drawing surface. Curved into a circular arc The portion 84, the curved portion 84, has a curvature in which the arc center 57 is located further away from the central axis 56 of the ball valve 14 on the longitudinal axis (left side in the drawing). That is, the distance L1 from the boundary portion 78 of the insertion opening 64 to the rotation center axis 54 compared to the engagement edge portion 74 is actually the above-mentioned position 82 at which the engaging portion 70 of the male connector 62 is to be engaged in the coupled state. The distance L2 to the central axis of rotation 56 is formed to be shorter. Therefore, as the male connector 62 is rotated from the detachable state to the coupled state, the engaging portion 70 of the male connector 62 that is engaged with the engaging edge portion 74 is gradually pushed to the rotation center axis 56 of the ball valve 14, and as a result, The front end face 68 of the male connector 62 is pressed against the end face sealing member 40. Based on this, the male connector 62 is not required to be pressed against the end face sealing member 40, and the front end face 68 of the male connector 62 and the annular segment portion 38 of the ball valve 14 can be sealed and engaged by rotating the male connector 62. Further, in the present embodiment, the engagement edge portion 74 is curved in a circular arc shape, but the curvature is not necessarily formed in a circular arc shape.

The ball valve 14 located at the second rotational position is prevented from rotating by the following operation. As shown in FIGS. 8A, 8B, 9A, and 9B, the shaft portion 44 of the ball valve 14 is provided with a notch portion 86 which is extended from the outer periphery of the shaft portion 44 to the inner side. a straight line 86-1 formed at right angles and a circular arc 86-2 forming a part of the periphery of the shaft portion, and having a sector cross section with a central angle 90 of a point on the central axis of rotation or a vertex thereof . Further, as is apparent from Fig. 2, an engagement groove 88 extending in the sliding direction of the sleeve 58 is provided on the inner circumferential surface of the circular tubular sleeve 58. In the detachable state shown in Fig. 5, the front end face 59 of the sleeve 58 abuts on the outer peripheral surface of the arc portion of the shaft portion 44, so the ball valve The rotation of 14 is not limited. On the other hand, in the connected state shown in Fig. 6, the notch portion 86 of the shaft portion 44 and the engagement groove 88 of the sleeve 58 are in a state of being engageable, and the spring 60 is pushed toward the shaft portion 44. The tube 58 is advanced until the front end surface 59 of the sleeve 58 is engaged with the notch portion 86 of the shaft portion 44, and is in a rotation preventing state shown in Fig. 7. In the rotation prevention state, since the notch portion 86 of the shaft portion 44 is engaged with the engagement groove 88 of the sleeve 58, the rotation of the ball valve 14 can be prevented, thereby preventing the erroneous rotation of the male connector 62. It is detached from the female connector 10. When the ball valve 14 is to be rotated, the engagement of the notch portion 86 of the shaft portion 44 with the engagement groove 88 of the sleeve 58 can be released by retracting the sleeve 58 toward the joint body 12 side, so that the male connector 62 can be made Turn.

When the male connector 62 to be connected is to be detached from the female connector 10, the male connector 62 is rotated in the reverse direction when connected, and is rotated from the connected state shown in FIG. 3E to be detachable as shown in FIG. 3A. status. 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 released to the outside.

As shown in FIGS. 8A, 8B, 9A, and 9B, the exhaust suppressing member 28 has an annular lip portion 92 to be engaged along the outer surface 30 of the ball valve 14. The spherical outer surface 30 of the valve body 36 is provided with a shaft mounting portion 34 as shown above, and a segment portion 34-2 recessed in the outer surface 30 is formed on both sides of each shaft mounting portion 34, Therefore, four segment portions 34-2 are formed in total. The lip portion 92 is disposed above the two segment portions of the four segment portions 34-2 in a state where the ball valve 14 shown in FIGS. 8A and 8B is located at the first rotational position. to When the ball valve 14 shown in FIGS. 9A and 9B is located at the second rotational position, the ball valve 14 is disposed to pass over all of the four segment portions 34-2. That is, the lip portion 92 of the exhaust suppressing member 28 is configured such that when the ball valve 14 is positioned between the first rotational position and the second rotational position, it passes through at least four of the four segments 34-2 of the ball valve 14. Above the two segments, a slight gap 96 is formed between the lip 92 and the ball valve 14.

When the male connector 62 is rotated from the state shown in FIG. 3E to the arrow symbol B direction to 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 released. . Although the lip portion 92 of the exhaust suppressing member 28 maintains the engagement state with the outer surface 30 of the ball valve 14, the outer surface 30 of the ball valve 14 is formed between the lip portion 92 and the ball valve 14 as described above. The small gap 96 caused by the segment portion 34-2 causes the pressurized fluid inside the joint to be gradually released to the outside through the minute gap 96. Further, between the lip portion 92 and the outer surface 30 of the ball valve 14, although it is engaged, it is not sealed, and a gap is formed. Therefore, the pressurized fluid is not only discharged from the minute gap 96 but also released from the gap between the lip portion 92 and the outer surface 30 of the ball valve 14. Further, when the male connector 62 is rotated and the third embodiment is in the state of FIG. 3A, the engagement between the lip portion 92 and the ball valve 14 is partially released, so that the second through hole 32 does not pass through the minute gap 96. Rather, it is in direct communication with the exhaust gas release port 98. 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 exhaust gas discharge port 98, but a certain amount of fluid has been discharged through the minute gap 96, so that the fluid pressure is lowered. Therefore, the speed of release will become smaller.

As described above, the female connector 10 of the pipe joint of the present invention is used in the process in which the engagement seal between the joint main body 12 and the ball valve 14 is partially released until the flow path on the side of the male joint 62 is opened to the atmosphere. The restricting flow path formed by the minute gap 96 allows the internal fluid to be gradually released at a relatively small flow rate. In this way, the internal fluid pressure can be gradually lowered, so that the high-pressure fluid can be prevented from being released into the atmosphere by a single breath, thereby greatly reducing the noise when the fluid is discharged. In addition, it is possible to reduce the risk of joint injection or the like due to the release of the rushing fluid. Further, when there is no configuration of the lip portion 92, the first through hole 22 of the joint main body 12 does not pass through the restricting flow path at an early stage when the male joint 62 is rotated from the connected state to the detachable state. Since the air is directly connected to the exhaust gas discharge port 98, the fluid on the first through hole 22 side (the fluid supply source side) is likely to be released to a large amount in the atmosphere. However, when the lip portion 92 is provided, the amount of the fluid to be discharged can be suppressed, which contributes to energy saving.

In the present embodiment, the material of the annular seal member 26 and the end face sealing member 40 is made of a rubber material in order to obtain high sealing property, and the material of the exhaust gas suppressing member 28 is required to obtain high sliding property with the ball valve 14. A resin material which is harder than the rubber material of the sealing members 26, 40 and has low friction characteristics is used.

Further, in the present embodiment, the minute gap 96 which is the restriction passage is formed between the segment portion 34-2 formed by the shaft attachment portion 34 of the valve body 36 and the lip portion 92 of the exhaust suppressing member 28. For example, another groove may be provided at another position of the outer surface 30 of the valve body 36 to form a small gap, or a concave portion may be provided on the side of the lip portion 92 to thereby engage the ball. A small gap is formed between the valves. Further, the ball valve and the exhaust suppressing member may not be provided with a recess, but a moderate gap is formed between the lip portion 92 of the exhaust suppressing member 28 and the outer surface 30 of the ball valve 14, and the gap is used as a restricting flow path. .

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. In the present embodiment, the first and second through holes 22 and 32 are formed to have a relatively large diameter in order to flow a large flow rate, thereby preventing the first through hole 22 from passing through the restricting flow path in the state of FIG. 3B. In a state in which it is in direct communication with the exhaust gas release port 98, for example, the diameters of the first and second through holes 22 and 32 may be made small, and the configuration may be such that the engagement of the exhaust gas suppressing member 28 is released. The outer surface 30 of the ball valve 14 closes the first through hole 22, and the first through hole 22 does not communicate with the exhaust gas discharge port 98 without passing through the restriction flow path, whereby the amount of discharge from the first through hole 22 side can be further reduced. .

8‧‧‧ pipe joint

10‧‧‧Female connector

12‧‧‧Connector body

14‧‧‧Ball valve

16‧‧‧Shell components

18‧‧‧End

20‧‧‧The other end

22‧‧‧1st through hole

24‧‧‧Threaded part

26‧‧‧Aperture sealing member

28‧‧‧Exhaust suppression components

30‧‧‧ outer surface

32‧‧‧2nd through hole

36‧‧‧ valve body

38‧‧‧Ring section

40‧‧‧End face sealing member

42‧‧‧ Sealing member holding member

54‧‧‧ inner surface

56‧‧‧Rotation center axis

58‧‧‧ casing

60‧‧‧ Spring

62‧‧‧ Male connector

68‧‧‧ front face

76‧‧‧3rd through hole

92‧‧‧Lip

98‧‧‧Exhaust outlet

Claims (7)

A female connector is a female connector capable of attaching and detaching a male connector having a engaging portion on a peripheral surface thereof, the female connector having a tubular joint body and a ball valve and a shell member having a longitudinal direction from one end a first through hole penetrating to the other end, and a duct connected to the one end, the ball valve having a spherical outer surface and a second through hole penetrating through the outer surface in the radial direction; and The end face sealing member in the second through hole, wherein the ball valve is disposed on the other end side of the joint main body, and the second through hole has a male joint insertion portion into which the male joint is to be inserted; Adjacent to the end surface of the male connector inserted into the male connector insertion portion and facing the annular segment; and the annular segment continuously extends in the opposite direction to the male connector insertion portion, and the male connector has been inserted a communication portion that communicates with the third through hole of the joint, wherein the end surface sealing member is disposed in the annular segment portion, and the male connector is inserted into the male connector insertion portion to make the male When the third through hole of the head and the communication portion of the second through hole are in a communicating state, the front end surface of the male joint abuts between the front end surface and the annular portion, and the shell member is The joint body is fixed and configured to hold the ball valve such that the ball valve can close the first rotation position of the other end of the first through hole by the outer surface of the valve body and the second through hole The longitudinal direction is integrated between the second rotational position of the first through hole and the rotation center passing through the center of the valve body The housing member has an insertion opening and a groove opening, and the insertion opening is configured to allow the male connector to be inserted into the male connector insertion portion of the valve body of the ball valve located at the first rotational position, the groove The opening is formed to extend from the insertion port, and when the ball valve is rotated between the first rotation position and the second rotation position in a state in which the male connector is inserted into the male connector, the movement of the male connector is allowed. Further, an engagement edge portion that is slidably engaged with the engagement portion of the male connector is provided on both side edges of the groove opening portion, and the engagement edge portion is configured to be compared to the card The distance from the boundary between the edge portion and the insertion port to the rotation center axis is the position at which the ball valve of the male connector is engaged with the engagement portion when the ball valve is positioned at the second rotation position to the rotation center axis The distance is relatively short, and in the second rotation position, the engaging edge portion presses the engaging portion toward the rotation center axis of the ball valve, before the male joint Will face the end face sealing member to the annular stepped portion pressed. The female joint according to the first aspect of the invention, wherein the engaging edge portion is configured to be curved such that when the ball valve into which the male joint has been inserted is rotated from the first rotational position to the second rotational position, a distance from a portion where the engaging edge portion engages with the engaging portion of the male joint to the rotation center axis of the ball valve gradually changes as the ball valve rotates from the first rotational position to the second rotational position short. The female joint according to the second aspect of the invention, wherein the bending of the engaging edge portion is formed in the longitudinal direction The above-mentioned center axis of rotation of the ball valve is also formed in a circular arc shape centering on the position of the joint body side. The female joint according to any one of the first aspect, wherein the ball valve is configured to include a shaft portion extending from the valve body to the outer side of the shell member along the rotation center axis. The shaft portion is rotatably supported by the shell member to rotate together with the valve body, and has a notch portion on a peripheral surface of the shaft portion, and the female joint is configured to have an outer side of the shell member. The sleeve sliding in the longitudinal direction, when the ball valve is located at the second rotational position, the sleeve engages the notch portion of the ball valve, thereby preventing the ball valve from rotating. The female joint according to the fourth aspect of the invention, wherein the notch portion has a sector cross section having a central angle of 90 degrees with the central axis of rotation of the shaft portion as a vertex. The female joint according to the fourth aspect of the invention, wherein the ball valve includes a seal member holding member provided along a peripheral wall of the male joint insertion portion of the second through hole, and the seal member holding member is configured and arranged The end face sealing member is engaged with the end face sealing member to hold the end face sealing member in the annular segment portion, and the outer surface of the valve body is provided with a recessed shaft formed on the outer surface The mounting portion, wherein the shaft portion is provided as an individual body, and the engaging portion provided at a proximal end portion of the shaft portion is engaged with the shaft mounting portion to be attached to the valve body, and Engaging with the sealing member holding member described above The sealing member holding member is locked to the second through hole. A pipe joint comprising the female joint described in the first or second aspect of the patent application and the male joint shown below, that is, the male joint is configured to be inserted through the insertion opening of the shell member. The male connector of the male connector insertion portion of the valve body of the ball valve at the first rotational position has an engagement portion and a distal end surface, and the engagement portion is rotated from the first rotational position to the second position When the position is rotated, the engagement edge portion of the shell member is slidably engaged with the engagement portion, and the engagement portion is configured such that the engagement edge portion faces the rotation center axis of the ball valve when the ball valve is located at the second rotation position The front end surface is configured to be pressed by the end face sealing member when the ball valve is positioned at the second rotational position.