JP7373318B2 - Coupling parts and pipe fittings - Google Patents

Description

The present invention relates to a joint member and a pipe joint.

In a pipe joint consisting of a female joint member and a male joint member that are connected to each other, by making the pressing surface of the sleeve that restrains the locking element an inclined surface, the female joint member and the male joint member can be easily connected in the connected state. There is something that creates a mutually attractive force between them. For example, in the rotary joint shown in Patent Document 1, the pressing surface of the first sleeve of the first rotary connecting member is inclined, and in the connected state, the locking element is pressed radially inward by this inclined pressing surface, The locking element is pressed against the inclined surface of the locking element receiving recess of the second rotary connecting member. As a result, the second rotational coupling member is drawn toward the first rotational coupling member. Then, the flange of the first rotational connection member and the end surface of the second rotational connection member come into contact and are pressed against each other, and the first rotational connection member and the second rotational connection member are aligned in the axial direction. The first rotary connecting member further includes a second sleeve disposed behind the first sleeve, and when the second sleeve is in the sleeve holding position, the first sleeve releases the locking element. It is also designed to prevent it from being erroneously displaced.

Patent No. 4482317

In the conventional rotary joint described above, the second sleeve is provided to limit the displacement of the first sleeve, but when the second sleeve is in the sleeve holding position, the contact between the first sleeve and the second sleeve is There is a gap between them in the axial direction. In the above-mentioned structure in which the locking element is restrained by an inclined surface, if the sleeve retreats even slightly, the locking element can be displaced radially outward, and as a result, the second rotary connecting member is axially displaced relative to the first rotating connecting member. It can be displaced in any direction. In this case, the flange of the first rotational connection member and the end face of the second rotational connection member cannot be maintained in contact with each other, and the state in which the first rotational connection member and the second rotational connection member are aligned in the axial direction cannot be maintained. become unable to maintain it. In addition, in other pipe fittings having a similar structure in which the locking member is restrained by an inclined surface, there is one in which the two fitting members are pressed against each other in the axial direction to seal the gap between the two fitting members. be. In such a pipe joint, if the sleeve having the inclined surface is even slightly displaced, the pressing force between the joint members may become weaker and the sealed state may not be maintained.

SUMMARY OF THE INVENTION Therefore, the present invention provides a joint member having a structure in which a locking member is restrained by an inclined surface of a sleeve, which can prevent a sleeve having an inclined surface from being displaced in a connected state, and such a joint member. The purpose of the present invention is to provide a pipe joint with the following features.

That is, the present invention
A joint member configured to removably connect a corresponding joint member,
a fitting body defining an insertion passage for receiving a compatible fitting member;
A locking member held in a holding hole formed to penetrate the joint body in the radial direction, the locking member protruding radially inward from the inner peripheral surface of the joint body and inserted into the insertion passage. A connecting position where the corresponding joint member is engaged with the locking groove of the joint member to connect the corresponding joint member to the joint body, and a disconnection position where the corresponding joint member is displaced radially outward from the connecting position to release the connection with the corresponding joint member. a locking member movable between;
An inner sleeve displaceably disposed on the outer circumferential surface of the joint body, the inner sleeve having a restraining position in which it comes into contact with the locking member to restrain the locking member in the connected position, and a restraining position in which the locking member is released from the restraint. The lock member is movable between a restraint release position that allows the locking member to be displaced to the connection release position, and has an abutting inclined surface that is inclined radially inward in a direction from the restraint position to the restraint release position. an inner sleeve having an inner sleeve, the contact slope being in contact with the locking member in the restraining position;
an outer sleeve disposed to cover the inner sleeve from the outside in the radial direction and movable with respect to the joint body and the inner sleeve, the outer sleeve being displaceable with respect to the joint body and the inner sleeve, the constraint allowance allowing the inner sleeve to be in the constraint position; and a restraint release holding position for holding the inner sleeve in the restraint release position, and facing the inner sleeve in a direction from the restraint permitting position to the restraint release holding position. the engagement surface engages with the inner sleeve when the outer sleeve is displaced from the constraint permitting position to the constraint release holding position while the inner sleeve is in the constraint position; an outer sleeve adapted to displace the inner sleeve to the release position;
When the outer sleeve is displaced toward the restraint release holding position, it engages with the outer sleeve to prevent the outer sleeve from being displaced closer to the restraint release holding position than the restraint permitting position. a displacement prevention member having a displacement prevention state in which the outer sleeve is displaced to the restraint release holding position;
Provided is a joint member comprising:

The joint member includes an inner sleeve having an abutting inclined surface that restrains the locking member, and an outer sleeve that covers the inner sleeve from the outside and displaces the inner sleeve from the restraint position to the restraint release position. The displacement prevention member can prevent the outer sleeve from being displaced from the restraint permitting position to the restraint release holding position. Therefore, by placing the displacement preventing member in the displacement preventing state, the inner sleeve is prevented from being displaced by the outer sleeve. Furthermore, since the inner sleeve is covered by the outer sleeve, it is difficult to manipulate it directly. That is, by placing the displacement prevention member in the displacement prevention state, it is possible to prevent the inner sleeve in the restraint position from displacing toward the restraint release position without directly restraining the inner sleeve.

Preferably, when the displacement blocking member is in the displacement blocking state, the engagement surface may be located away from the inner sleeve.

With this configuration, it is possible to more reliably prevent the inner sleeve from being displaced by the outer sleeve.

Specifically, the displacement prevention member is displaceably attached to the joint body, and is displaced between a displacement prevention position where the displacement prevention state occurs and a displacement permissible position where the displacement permission state occurs. You can do it like this.

Also,
the joint body has a fluid passage;
a valve member disposed within the fluid passageway and movable in the direction of a longitudinal axis of the fluid passageway between a closed position for closing the fluid passageway and an open position for opening the fluid passageway;
a valve operating member attached to the joint body and movable between a closing operating position in which the valve member is in the closing position and an opening operating position in which the valve member is in the open position;
further comprising;
The displacement blocking member is configured to interlock with the valve operating member, and when the valve operating member is set to the closing operating position, the displacement blocking member is set to the displacement allowing position, and the valve operating member is set to the opening operating position. The displacement blocking member can be set at the displacement blocking position when the displacement blocking member is moved.

Furthermore,
A first sleeve locking member held by the joint body, the first sleeve locking member protruding radially outward from the outer peripheral surface of the joint body and engaging with a locking recess formed in the inner sleeve to restrain the inner sleeve. A locking position that locks in the release position, and a lock that is displaced radially inward from the locking position to release the engagement with the inner sleeve and allow the inner sleeve to be displaced to the restraint position. a first sleeve locking member movable between the release position and the release position;
A second sleeve locking member held by the inner sleeve, the second sleeve locking member protruding radially outward from the outer circumferential surface of the inner sleeve and engaging with a locking recess formed in the outer sleeve to lock the outer sleeve into the inner sleeve. A second sleeve locking member is movable between a locking position where the sleeve is locked and a locking release position where the locking position is displaced radially inward from the locking position to release the engagement with the outer sleeve. parts and
A slide member disposed within the insertion passage, the first sleeve locking member being at a restraining position for restraining the first sleeve locking member at the locking position, and the first sleeve locking member being displaced to the locking release position. and a restraint releasing position that allows for the displacement in the direction of the longitudinal axis of the insertion passage, and when the corresponding joint member is inserted into the insertion passage, it is pushed by the corresponding joint member and released from the restraint position. a slide member adapted to be displaced to the restraint release position;
further comprising;
When the inner sleeve is in the restraint release position and the outer sleeve is in the restraint release holding position, the first sleeve locking member and the second sleeve locking member are aligned in the radial direction of the joint body. the second sleeve locking member is held in the locking position by the first sleeve locking member in the locking position;
When the valve operating member is displaced from the closing operation position toward the opening operation position while the outer sleeve is locked in the restraint release holding position, the displacement blocking member can be engaged to prevent the valve operating member from moving to the open operating position.

Moreover, the present invention
A pipe joint comprising any of the above-mentioned joint members and a corresponding joint member detachably connected to the joint member,
The compatible joint member includes a compatible joint body defining a fluid passage, the compatible joint body having a locking groove formed on an outer peripheral surface and a front end abutment surface formed on a front end,
When the corresponding joint member is connected to the joint member by the locking member, the locking member engages with the locking groove, and the front end abutting surface abuts the joint body in the direction of the longitudinal axis. The fitting body and the corresponding fitting body are configured to engage in a sealing manner,
The locking groove is formed with an inclined surface that is inclined radially outward toward the front end side, and the locking member is pressed radially inward by the corresponding contacting inclined surface and pressed against the inclined surface. To provide a pipe joint in which the front end abutting surface is pressed against the joint body when the corresponding joint member receives a force in a direction in which it is drawn into the insertion passage.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a pipe joint according to the present invention will be described based on the accompanying drawings.

FIG. 1 is a perspective view of a pipe joint in an unconnected state according to an embodiment of the present invention. FIG. 2 is a side cross-sectional view of the pipe fitting of FIG. 1; 3 is a cross-sectional view of the female joint member taken along line AA in FIG. 2. FIG. It is a perspective view of a displacement prevention member. FIG. 2 is a side cross-sectional view showing a connected state of the pipe joint in FIG. 1; FIG. 7 is a side cross-sectional view showing a state in which the internal member of the valve operating member has been displaced to a second position. FIG. 7 is a side cross-sectional view showing a state in which the internal member of the valve operating member has been displaced to a third position and the valve member is in the open position. 8 is a sectional view taken along line BB in FIG. 7. FIG.

As shown in FIGS. 1 and 2, a pipe joint 1 according to an embodiment of the present invention includes a female joint member 2 (joint member) and a male joint member 3 (corresponding joint member) detachably connected thereto. It consists of.

As shown in FIG. 2, the female coupling member 2 includes a cylindrical coupling body 14 having a fluid passageway 10 and an insertion passageway 12 that are connected to each other. The joint body 14 consists of an outer member 14-1 and an inner member 14-2 on the front side (right side in the figure) and a rear member 14-3 on the rear side (left side in the figure). An annular valve seat portion 16 that projects radially inward is formed on the inner peripheral surface 14a of the inner member 14-2 that defines the fluid passage 10. The female coupling member 2 further comprises a valve member 18 displaceable within the fluid passage 10 in the direction of the longitudinal axis L of the fluid passage 10 and the insertion passage 12 . The valve member 18 includes a cylindrical sliding portion 20 that slides on the inner circumferential surface 14a of the joint body 14, a valve body portion 22 that engages with the valve seat portion 16, and the cylindrical sliding portion 20 and the valve body portion 22. and a connecting portion 24 extending in the radial direction between the connecting portion and the connecting portion. A sealing member 26 is disposed on the valve body 22, and the valve body 22 sealingly engages with the valve seat 16 via the sealing member 26 to close the fluid passage 10. A plurality of passage holes 28 penetrating in the direction of the longitudinal axis L are formed in the connecting portion 24 . A holding hole 30 passing through the cylindrical sliding portion 20 in the radial direction is formed, and a spherical valve fixing member 32 is held in the holding hole 30 so as to be displaceable in the radial direction.

The female joint member 2 further includes a valve operating member 34 for operating the valve member 18 to open and close. The valve operating member 34 includes an internal member 36 disposed within the fluid passage 10 so as to be displaceable in the direction of the longitudinal axis L, and an operating portion 38 for operating the internal member 36 from outside the fluid passage 10. The internal member 36 includes a sliding outer circumferential surface 40 that slides on the inner circumferential surface 20a of the cylindrical sliding portion 20 of the valve member 18, an outer circumferential engagement recess 42 formed in the sliding outer circumferential surface 40, and a longitudinal axis. It has a plurality of flow passage holes 44 penetrating in the L direction. The operating portion 38 includes a handle 46 rotatably attached to the joint body 14 , a shaft portion 48 extending from the handle 46 into the fluid passage 10 , and a shaft portion 48 and the internal member 36 connected within the fluid passage 10 . It has a link member 50 (FIG. 3). The operating section 38 is configured to open and close the valve member 18 by displacing the internal member 36 in the direction of the longitudinal axis L via the shaft section 48 and the link member 50 by rotating the handle 46. There is. In the uncoupled state shown in FIGS. 2 and 3, the valve fixing member 32 engages with the inner circumferential engagement recess 52 formed in the inner circumferential surface 14a of the joint main body 14, and locks the valve member 18 in the closed position. It is in a fixed position where it is fixed in the direction of the longitudinal axis L with respect to the joint body 14. Further, the valve fixing member 32 is supported from the inside in the radial direction by the sliding outer circumferential surface 40 of the internal member 36 and is held at a fixed position.

The female joint member 2 further includes a spherical locking member 54 held by the outer member 14-1 of the joint body 14, and an inner locking member 54 disposed on the outer peripheral surface 14b of the joint body 14 so as to be displaceable in the direction of the longitudinal axis L. a sleeve 56; an outer sleeve 58 disposed to cover the inner sleeve 56 from the outside in the radial direction and displaceable relative to the joint body 14 and the inner sleeve 56; and a slide member 60 arranged so as to be movable. A holding hole 62 passing through in the radial direction is formed in the outer member 14-1 of the joint body 14, and the locking member 54 is held in the holding hole 62 so as to be displaceable in the radial direction. The outer sleeve 58 has an engagement surface 58a facing the inner sleeve 56 toward the rear. Further, a rubber cover 64 is attached to the outer sleeve 58. The slide member 60 is arranged in a gap between the outer member 14-1 and the inner member 14-2 of the joint body 14. The joint body 14 is formed with a through hole 66 that penetrates in the radial direction, and a spherical first sleeve locking member 68 is disposed in the through hole 66 so as to be displaceable in the radial direction. The inner sleeve 56 has a locking recess 70 formed in its inner circumferential surface 56a, and a through hole 72 extending radially through the locking recess 70. A cylindrical second sleeve locking member 74 is disposed in the through hole 72 of the inner sleeve 56 so as to be displaceable in the radial direction. In the uncoupled state shown in FIGS. 2 and 3, the first sleeve locking member 68 protrudes radially outward from the outer circumferential surface 14b of the joint body 14 and is in the locking position where it engages with the locking recess 70 of the inner sleeve 56. The inner sleeve 56 is held in a restraint release position in which the locking member 54 is not restrained by the first sleeve locking member 68 in the locking position. Further, the second sleeve locking member 74 is in a locking position where it protrudes radially outward from the outer circumferential surface 56b of the inner sleeve 56 and engages with the locking recess 76 of the outer sleeve 58, and the second sleeve locking member 74 is in a locking position where the second sleeve locking member 74 is engaged with the locking recess 76 of the outer sleeve 58. On the other hand, it is locked in the direction of the longitudinal axis L. As shown in the figure, the slide member 60 is held in the locking position by the spring 78, and the first sleeve locking member 68 is supported from the inside in the radial direction by the slide member 60 in the locking position and is locked in the locking position. Further, when the inner sleeve 56 is in the restraint release position and the outer sleeve 58 is in the restraint release holding position as shown in the figure, the first sleeve locking member 68 and the second sleeve locking member 74 are connected to the diameter of the joint body 14. The second sleeve locking member 74 is held in the locked position by the first sleeve locking member 68 in the locked position. Therefore, in the uncoupled state, the inner sleeve 56 is held in the restraint release position and the outer sleeve 58 is held in the restraint release holding position shown.

A displacement blocking member 82 is attached to the valve operating member 34 at a position outside the joint body 14 . The displacement blocking member 82 is a fan-shaped member as shown in FIG. 4, and the arc-shaped portion serves as the displacement blocking portion 80. As will be described later, the displacement blocking member 82 limits opening and closing of the fluid passage 10 by rotating the valve operating member 34 and the disconnection of the fluid passage 10 by operating the outer sleeve 58, depending on the situation. Note that the displacement prevention member 82 may be configured as a part of the handle 46 or the shaft portion 48.

The male coupling member 3 includes a coupling body 86 (compatible coupling body) defining a fluid passageway 84 (compatible fluid passageway), and a valve member 88 disposed within the fluid passageway 84 . Valve member 88 is biased by a spring 90 toward a closed position that closes fluid passageway 84 . A locking groove 92 in which the locking member 54 of the female joint member 2 is locked is formed in the outer peripheral surface 86a of the joint body 86.

When the male joint member 3 is inserted into the insertion passage 12 of the female joint member 2, the locking member 54 of the female joint member 2 is pushed radially outward by the joint body 86 of the male joint member 3. to the disconnection position. Further, the slide member 60 is pushed backward (to the left in the figure) by the joint body 86 of the male joint member 3. When the receiving recess 94 formed on the outer circumferential surface 60a of the slide member 60 reaches the restraint releasing position where it aligns with the first sleeve locking member 68, the first sleeve locking member 68 moves radially inward toward the receiving recess 94. It is in a state where it can be displaced. The first sleeve locking member 68 is pushed radially inward by the inner sleeve 56 biased by the spring 96, and is brought to the unlocked position where the inner sleeve 56 is unlocked. The inner sleeve 56 that has been disengaged from the first sleeve locking member 68 is further displaced forward by the spring 96, and the locking member 54 is moved in the radial direction by the abutment inclined surface 98 that is inclined radially inward toward the rear. This is the restraint position where it is pressed inward. The locking member 54 is pressed radially inward by the abutting inclined surface 98 of the inner sleeve 56 and enters the connecting position where it engages with the locking groove 92 of the male joint member 3. As a result, the pipe joint 1 enters the connected state shown in FIG. 5. At this time, the locking member 54 comes into contact with an inclined surface 92a that is inclined radially outward toward the front end side of the locking groove 92. When the locking member 54 pressed radially inward by the contact slope 98 contacts the slope 92a of the locking groove 92, the male joint member 3 is pulled into the insertion passage 12 of the female joint member 2. It receives a force in the direction (to the left in the diagram). As a result, the front end contact surface 86b formed at the front end of the joint body 86 of the male joint member 3 is pressed against the contact seal member 100 attached to the female joint member 2, and the male joint member 3 and the female The sealing between the mold joint member 2 and the mold joint member 2 is maintained. Note that the seal between the male joint member 3 and the female joint member 2 can also be formed by a metal seal whose metal surfaces are brought into direct contact with each other. In addition, the second sleeve locking member 74 is no longer supported from the radially inner side by the first sleeve locking member 68, so that the second sleeve locking member 74 can be displaced radially inward. Therefore, the outer sleeve 58 is no longer locked to the inner sleeve 56 and can be displaced forward with respect to the inner sleeve 56.

In the connected state of FIG. 5, the handle 46 is in the closing operation position with the valve member 18 of the female joint member 2 in the closed position, and the valve member 18 of the female joint member 2 and the valve member 88 of the male joint member 3 are in the closed position. are in a closed position with their respective fluid passages 10, 84 closed. When the handle 46 is rotated counterclockwise when viewed from above and the internal member 36 is displaced from the first position in FIG. 5 to the second position in FIG. The outer circumferential engagement recess 42 is located at a position facing the valve fixing member 32 in the radial direction. This allows the valve fixing member 32 to be displaced radially inward toward the outer circumferential engagement recess 42 . When the valve fixing member 32 is displaced radially inward from the fixed position, the valve fixing member 32 is disengaged from the joint body 14 and reaches a fixing release position in which the valve member 18 can be displaced in the direction of the longitudinal axis L relative to the joint body 14. becomes. Furthermore, when the internal member 36 is in the second position, it abuts the valve member 18 in the closed position in the direction of the longitudinal axis L. As the handle 46 is rotated, the displacement blocking member 82 also rotates, and the outer sleeve 58 is pushed by the displacement blocking member 82 and displaced forward.

When the handle 46 is further rotated counterclockwise, the internal member 36 is displaced further forward beyond the second position shown in FIG. 6 to the third position shown in FIG. 7 . The valve member 18 of the female coupling member 2 is pushed by the inner member 36 to an open position opening the fluid passageway 10. Further, the valve member 88 of the male coupling member 3 is pushed by the valve member 18 of the female coupling member 2 and is displaced to the open position where the fluid passage 84 is opened. As a result, the fluid passage 10 of the female joint member 2 and the fluid passage 84 of the male joint member 3 are brought into communication. The rotation range of the handle 46 is limited so that the link member 50 can only be rotated to the position shown in FIG. In the state of FIG. 8, the pivot center C1 of the link member 50 with respect to the shaft portion 48 is located above the longitudinal axis L passing through the rotation center C2 of the shaft portion 48, as viewed in FIG. The valve member 18 and internal member 36 of the female coupling member 2 are subjected to a rearward force by the spring 90 of the male coupling member 3, and the force is transferred from the position of the link member 50 as described above to the shaft portion 48 and the handle 46. creates a moment that rotates counterclockwise. Therefore, the force received from the valve member 18 when the internal member 36 is in the third position does not cause the handle 46 to rotate clockwise and displace the internal member 36 to the second and first positions.

When the internal member 36 is closer to the third position (FIG. 7) than the second position (FIG. 6), the valve fixing member 32 is supported from the outside in the radial direction by the inner circumferential surface 14a of the joint body 14, and 14 is released from the fixed release position. When the valve securing member 32 is held in the unlocked position, the valve securing member 32 engages the internal member 36 to secure the valve member 18 relative to the internal member 36 in the direction of the longitudinal axis L. Therefore, when the handle 46 is rotated clockwise to displace the internal member 36 from the third position toward the second position, the valve member 18 is displaced together with the internal member 36 toward the closed position.

When the internal member 36 is between the second position and the third position, the displacement prevention member 82 is in a displacement prevention position (displacement prevention state) with its arcuate outer peripheral surface 82a facing the outer sleeve 58. The displacement prevention member 82 in the displacement prevention position prevents the outer sleeve 58 from being displaced toward the restraint release holding position rearward from the restraint permitting position shown in FIGS. 6 and 7. At this time, the engagement surface 58a of the outer sleeve 58 is in a position away from the inner sleeve 56. Therefore, the inner sleeve 56 cannot be manipulated by the outer sleeve 58. Further, since the inner sleeve 56 is covered from the outside by the outer sleeve 58, the inner sleeve 56 cannot be directly operated. That is, while the outer sleeve 58 is restrained by the displacement prevention member 82 at the restraint permissible position, the inner sleeve 56 cannot be displaced from the restraint position toward the restraint release position.

When disconnecting the female joint member 2 and the male joint member 3, the internal member 36 is first displaced to the first position and the valve member 18 is returned to the closed position as shown in FIG. 5. At this time, the displacement prevention member 82 rotates together with the handle 46 and reaches a displacement permissible position (displacement permissible state) in which the arcuate outer circumferential surface 82a does not face the outer sleeve 58. This allows the outer sleeve 58 to be displaced to the restraint release holding position. When the outer sleeve 58 is displaced toward the rearward release holding position, the engaging surface 58a of the outer sleeve 58 engages with the inner sleeve 56, and the inner sleeve 56 is displaced rearward together with the outer sleeve 58. When the outer sleeve 58 is moved to the release hold position, the inner sleeve 56 becomes the release position where the locking member 54 is released. When the male joint member 3 is pulled out from the female joint member 2 with the outer sleeve 58 in the restraint release holding position, the locking member 54 is displaced radially outward and disconnected from the male joint member 3. The connection between the female joint member 2 and the male joint member 3 is released (FIG. 2). Further, when the male joint member 3 is pulled out from the insertion passage 12, the slide member 60 in the restraint releasing position is displaced forward to restrain the first sleeve locking member 68 in the locking position (FIG. 2). Return to When the slide member 60 is in the restraining position, the first sleeve locking member 68 is in the locking position where the inner sleeve 56 is locked. Further, the second sleeve locking member 74 is in the locking position to lock the outer sleeve 58, and the inner sleeve 56 is locked in the restraint release position, and the outer sleeve 58 is in the restraint release holding position at the inner sleeve 56. It is locked.

In the uncoupled state shown in FIG. 2, the side surface 82b of the displacement prevention member 82 is in a position close to the rear end surface 58b of the outer sleeve 58. Further, the outer sleeve 58 is locked to the joint body 14 via the inner sleeve 56. When an attempt is made to displace the valve member 18 to the open position by rotating the handle 46 of the valve operating member 34 in such a disconnected state, the side surface 82b of the displacement preventing member 82 engages with the rear end surface 58b of the outer sleeve 58. As a result, further rotation of the handle 46 is prevented. That is, in the uncoupled state, the handle 46 is prevented from rotating from the closed operating position to the open operating position, and therefore the valve member 18 is prevented from being displaced to the open position.

In the female joint member 2 of the pipe joint 1, the valve member 18 is fixed to the joint body 14 by the valve fixing member 32 when the valve member 18 is in the closed position. When the fluid passage 10 is filled with high-pressure fluid while the valve member 18 is in the closed position, the valve member 18 receives a large pressure from the internal fluid, but this force is not applied to the valve operating member 34. Doesn't work. Therefore, the strength of the valve operating member 34, which tends to have a relatively large number of movable parts such as link mechanisms and become a complicated mechanism, can be made unnecessary. As a result, it is possible to increase the pressure resistance, and it is also possible to design the valve operating member 34 to be compact as a whole. Furthermore, since the inner sleeve 56 cannot be substantially displaced in the connected state, there is no possibility that the pressure on the locking member 54 by the inner sleeve 56 will be erroneously released or weakened, and the female joint member 2 It becomes possible to prevent the sealing engagement between the male joint member 3 and the male joint member 3 from being released unexpectedly.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments. For example, the displacement blocking member may be attached so as to be operable independently of the handle, or may be removably attached to the fitting body to prevent displacement of the outer sleeve when attached to the fitting body. By removing the outer sleeve from the joint body, a displacement allowing state may be established in which the outer sleeve is allowed to be displaced. Further, the displacement prevention member and the outer sleeve are each made of a magnetic member or have a magnet, so that the displacement prevention member and the outer sleeve repel each other when the displacement prevention member is in the displacement prevention position. The outer sleeve is prevented from being displaced toward the restraint releasing holding position due to the magnetic force, and when the displacement preventing member reaches the displacement allowing position, the magnetic force that causes the displacement preventing member and the outer sleeve to repel is no longer applied. You can also. The valve member may be fixed to the joint body or the flow path member by a valve fixing member in the open position. When the internal member of the valve operating member is displaced from the second position to the third position, the valve member may be pushed indirectly by the internal member via another member. As such a structure, for example, the valve fixing member is a cylindrical or prismatic member extending in the radial direction, and when the internal member is in the second position, it is displaced radially inward by gravity or the urging force of a spring and fixed. A conceivable configuration is such that the internal member pushes and displaces the valve member via the valve fixing member. Furthermore, the direction of displacement of the inner sleeve and the outer sleeve may not be in the direction of the longitudinal axis but in the direction of rotation about the longitudinal axis. The specific structure of the valve operating member can be changed as appropriate; for example, the handle may be replaced by another operating form such as a lever, or the link mechanism may be replaced by another mechanism such as a cam mechanism.

1 Pipe joint 2 Female joint member 3 Male joint member 10 Fluid passage 12 Insertion passage 14 Joint body 14-1 Outer member 14-2 Inner member 14-3 Rear member 14a Inner circumferential surface 14b Outer circumferential surface 16 Valve seat portion 18 Valve Member 20 Cylindrical sliding portion 20a Inner circumferential surface 22 Valve main body portion 24 Connecting portion 26 Seal member 28 Channel hole 30 Holding hole 32 Valve fixing member 34 Valve operating member 36 Internal member 38 Operating portion 40 Sliding outer circumferential surface 42 Outer circumferential member Matching recess 44 Channel hole 46 Handle 48 Shaft 50 Link member 52 Inner circumferential engagement recess 54 Locking member 56 Inner sleeve 56a Inner circumferential surface 56b Outer circumferential surface 58 Outer sleeve 58a Engaging surface 58b Rear end surface 60 Slide member 60a Outer circumferential surface 62 Holding hole 64 Cover 66 Through hole 68 First sleeve locking member 70 Locking recess 72 Through hole 74 Second sleeve locking member 76 Locking recess 78 Spring 80 Displacement prevention portion 82 Displacement prevention member 82a Arc-shaped outer peripheral surface 82b Side surface 84 Fluid passage 86 Joint body 86a Outer peripheral surface 86b Front end contact surface 88 Valve member 90 Spring 92 Locking groove 92a Inclined surface 94 Receiving recess 96 Spring 98 Contact inclined surface 100 Contact seal member C1 Pivotal center C2 Rotation center L Longitudinal axis

Claims (6)

A joint member configured to removably connect a corresponding joint member,
a fitting body defining an insertion passage for receiving a compatible fitting member;
A locking member held in a holding hole formed to penetrate the joint body in the radial direction, the locking member protruding radially inward from the inner peripheral surface of the joint body and inserted into the insertion passage. A connecting position where the corresponding joint member is engaged with the locking groove of the joint member to connect the corresponding joint member to the joint body, and a disconnection position where the corresponding joint member is displaced radially outward from the connecting position to release the connection with the corresponding joint member. a locking member movable between;
An inner sleeve displaceably disposed on the outer circumferential surface of the joint body, the inner sleeve having a restraining position in which it comes into contact with the locking member to restrain the locking member in the connected position, and a restraining position in which the locking member is released from the restraint. The lock member is movable between a restraint release position that allows the locking member to be displaced to the connection release position, and has an abutting inclined surface that is inclined radially inward in a direction from the restraint position to the restraint release position. an inner sleeve having an inner sleeve, the contact slope being in contact with the locking member in the restraining position;
an outer sleeve disposed to cover the inner sleeve from the outside in the radial direction and movable with respect to the joint body and the inner sleeve, the outer sleeve being displaceable with respect to the joint body and the inner sleeve, the constraint allowance allowing the inner sleeve to be in the constraint position; and a restraint release holding position for holding the inner sleeve in the restraint release position, and facing the inner sleeve in a direction from the restraint permitting position to the restraint release holding position. the engagement surface engages with the inner sleeve when the outer sleeve is displaced from the constraint permitting position to the constraint release holding position while the inner sleeve is in the constraint position; an outer sleeve adapted to displace the inner sleeve to the release position;
When the outer sleeve is displaced toward the restraint release holding position, it engages with the outer sleeve to prevent the outer sleeve from being displaced closer to the restraint release holding position than the restraint permitting position. a displacement prevention member having a displacement prevention state in which the outer sleeve is displaced to the restraint release holding position;
A joint member comprising: The coupling member according to claim 1, wherein the engagement surface is located away from the inner sleeve when the displacement prevention member is in the displacement prevention state. The displacement prevention member is displaceably attached to the joint body, and is configured to be displaced between a displacement prevention position where the displacement prevention state occurs and a displacement permissible position where the displacement permission state occurs. The joint member according to claim 1 or 2. the joint body has a fluid passage;
a valve member disposed within the fluid passageway and movable in the direction of a longitudinal axis of the fluid passageway between a closed position for closing the fluid passageway and an open position for opening the fluid passageway;
a valve operating member attached to the joint body and movable between a closing operating position in which the valve member is in the closing position and an opening operating position in which the valve member is in the open position;
further comprising;
The displacement blocking member is configured to interlock with the valve operating member, and when the valve operating member is set to the closing operating position, the displacement blocking member is set to the displacement allowing position, and the valve operating member is set to the opening operating position. 4. The joint member according to claim 3, wherein the displacement blocking member is in the displacement blocking position when the displacement blocking member is in the displacement blocking position. A first sleeve locking member held by the joint body, the first sleeve locking member protruding radially outward from the outer peripheral surface of the joint body and engaging with a locking recess formed in the inner sleeve to restrain the inner sleeve. A locking position that locks in the release position, and a lock that is displaced radially inward from the locking position to release the engagement with the inner sleeve and allow the inner sleeve to be displaced to the restraint position. a first sleeve locking member movable between the release position and the release position;
A second sleeve locking member held by the inner sleeve, the second sleeve locking member protruding radially outward from the outer circumferential surface of the inner sleeve and engaging with a locking recess formed in the outer sleeve to lock the outer sleeve into the inner sleeve. A second sleeve locking member is movable between a locking position where the sleeve is locked and a locking release position where the locking position is displaced radially inward from the locking position to release the engagement with the outer sleeve. parts and
A slide member disposed within the insertion passage, the first sleeve locking member being at a restraining position for restraining the first sleeve locking member at the locking position, and the first sleeve locking member being displaced to the locking release position. and a restraint releasing position that allows for the displacement in the direction of the longitudinal axis of the insertion passage, and when the corresponding joint member is inserted into the insertion passage, it is pushed by the corresponding joint member and released from the restraint position. a slide member adapted to be displaced to the restraint release position;
further comprising;
When the inner sleeve is in the restraint release position and the outer sleeve is in the restraint release holding position, the first sleeve locking member and the second sleeve locking member are aligned in the radial direction of the joint body. the second sleeve locking member is held in the locking position by the first sleeve locking member in the locking position;
When the valve operating member is displaced from the closing operation position toward the opening operation position while the outer sleeve is locked in the restraint release holding position, the displacement blocking member 5. The joint member according to claim 4, wherein the joint member is engaged with the valve member to prevent the valve operating member from being displaced to the open operating position. A pipe joint comprising the joint member according to any one of claims 1 to 5 and a corresponding joint member detachably connected to the joint member,
The compatible joint member includes a compatible joint body defining a fluid passage, the compatible joint body having a locking groove formed on an outer peripheral surface and a front end abutment surface formed on a front end,
When the corresponding joint member is connected to the joint member by the locking member, the locking member engages with the locking groove, and the front end abutting surface abuts the joint body in the direction of the longitudinal axis. The fitting body and the corresponding fitting body are configured to engage in a sealing manner,
The locking groove is formed with an inclined surface that is inclined radially outward toward the front end side, and the locking member is pressed radially inward by the corresponding contacting inclined surface and pressed against the inclined surface. A pipe joint, wherein the front end abutting surface is pressed against the joint body when the corresponding joint member receives a force in a direction in which it is drawn into the insertion passage.

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