TWI753420B - Valve structure, joint member and pipe joint - Google Patents

Abstract

[Problem] The present invention provides a joint member including a valve structure which does not have a sliding seal structure that requires a lubricant, has high pressure resistance, and can easily open and close a fluid passage. [Solution] The female joint member (2) includes: a valve member (18) arranged in the fluid passage (10); a valve fixing member (32) held by the valve member (18); and a valve member (18) for operating the valve member (18). the valve operating member (34). When the valve member (18) is in the closed position, the valve fixing member (32) is engaged with the peripheral engaging recess (42) of the joint body (14) to fix the valve member (18) to the joint body (14). When the handle (46) of the valve operating member (34) is rotated to displace the inner member (36) forward, the engagement of the valve fixing member (32) with the joint body (14) is released, and the inner member (36) is further moved forward. When the valve member (18) is displaced forward, the valve member (18) is also displaced forward to an open position that opens the fluid passage (10).

Description

Valve structure, joint member and pipe joint

The present invention relates to a valve structure, and a joint member and a pipe joint including the valve structure.

The pipe joint composed of the female joint member and the male joint member that are connected to each other has a valve body structure for preventing the internal fluid from leaking when the connection is disconnected from each other. For example, the valve structure included in the female joint member shown in Patent Document 1 is composed of: a cylindrical joint body that defines a fluid passage; a valve seat portion arranged in the center of the fluid passage; and displaceable in the direction of the long axis of the fluid passage It consists of an annular spool valve that opens and closes an annular opening between the inner peripheral surface of the joint body and the valve seat. The spool valve is hermetically engaged with the valve seat portion in a state where the male joint member is not connected to close the fluid passage, and when the male joint member is connected, the spool valve is pressed by the male joint member to open the fluid passage. The spool valve has a sealing member that is sealingly engaged with the inner peripheral surface of the joint body, and the sealing member slides on the inner peripheral surface when the spool valve is displaced between the closed position and the open position. Generally, the seal member as described above is formed of a rubber material, and lubricant is applied to the seal member in order to reduce sliding resistance with the inner peripheral surface or to reduce wear of the seal member.

However, depending on the type of fluid flowing in the fluid passage or the use environment, there are cases where lubricant cannot be used. In order to be used for the above applications, a valve structure has been developed that does not have a structure in which the spool valve and the inner peripheral surface of the joint body are slid and sealed. For example, the joint member shown in Patent Document 2 is a spool valve attached to one end of a bellows tube provided to form a part of the fluid passage of the joint member. When the corresponding joint member is connected, the bellows tube is shrunk while displacing the spool valve. This eliminates the need for a sealing member that slides between the spool valve and the fluid passage of the joint body. [Prior Art Literature] [Patent Literature]

[Patent Document 1] International Publication No. 2016/208681 [Patent Document 2] Japanese Patent No. 6514827

The bellows as described above are usually formed by bending thin metal. Therefore, when the pressure in the fluid passage becomes high, the bellows may be deformed. When the bellows is thickened to improve pressure resistance, the increased force required to displace the spool valve this time will deteriorate the operability at the time of valve opening and closing.

Therefore, the present invention aims to provide a valve structure which does not need a lubricant, has a high pressure resistance and can easily open and close a fluid passage, and a joint member provided with such a valve structure with pipe joints.

That is, the present invention provides a valve structure including: a flow path member having a fluid path and having an annular valve seat portion on an inner peripheral surface that defines the fluid path; a valve member disposed in the fluid passage, sealingly engaged with the valve seat portion, and displaceable in the direction of the long axis of the fluid passage between a closed position that closes the fluid passage and an open position that opens the fluid passage; The valve fixing member is arranged to be displaceable in the radial direction of the fluid passage with respect to the flow passage member and the valve member, and the valve member can be engaged with the valve member when the valve member is located at one of the closed position and the open position. The flow path member and the valve member fix the fixed position of the valve member in the direction of the long axis with respect to the flow path member, and release the engagement with respect to at least one of the flow path member and the valve member so that the The valve member is displaced between the fixed release positions in a state in which the valve member is displaceable toward the other position between the closed position and the open position; and A valve operating member is a valve operating member for operating the valve member, and has an internal member disposed so as to be displaceable in the fluid passage, and an operating portion for operating the internal member from outside the fluid passage, the internal member is a first position in the direction of the long axis that can hold the valve fixing member at the fixed position; a second position that allows the valve fixing member to be displaced at the fixed release position; and a second position that is further displaced beyond the second position 3-position displacement, when the inner member is displaced from the first position to the second position, it engages with the valve member located at the one position, and when the inner member is displaced from the second position to the third position, the valve member is displaced from the second position. The one position is shifted to the other position.

In this valve structure, the valve member is sealingly engaged with the valve seat portion formed on the inner peripheral surface of the fluid passage to close the fluid passage, and when the valve member is outside the closed position, the valve member and the inner peripheral surface of the joint member are non-sealably engaged between the valve member and the inner peripheral surface of the joint member. necessary. That is, in this valve body structure, there is no need to provide a sliding seal structure that slides and seals between the valve member and the inner peripheral surface of the joint main body when the valve member is displaced between the closed position and the open position. In addition, the sliding seal structure of the above-mentioned conventional technology produces frictional resistance to the valve member, and the bellows structure requires a force to deform the bellows. Any of these structures will have an effect on the displacement of the valve member, but due to the bellows structure. In this valve structure, it is not necessary to provide any of the structures, so that the displacement of the valve member can be easily performed. In addition, in this valve structure, when the valve member is located at one of the closed position and the open position, the valve member is fixed to the joint body in the longitudinal axis direction by the valve fixing member. Therefore, when the valve member is in the closed position and the open position, the valve operating member is not affected by the external force from the fluid in the fluid passage, etc., so that the valve operating member which is easy to become complicated does not need to have high strength. . As a result, the pressure resistance can be improved.

Further, the valve member includes a cylindrical sliding portion that slides on an inner peripheral surface of the flow path member, and a holding hole penetrating the cylindrical sliding portion in the radial direction, and the valve fixing member is held in the holding hole. can be displaced in this radial direction, has an inner peripheral engaging recess, and the flow path member is formed on the inner peripheral surface, The valve fixing member may be engaged with the inner peripheral engaging recess at the fixing position, and the valve member may be fixed relative to the flow path member in the long axis direction.

In this case, the inner member has a sliding peripheral surface on which the valve member slides on the inner peripheral surface of the cylindrical sliding portion, and a peripheral engaging recess formed on the sliding peripheral surface, When the inner member is at the first position, the sliding outer surface supports the valve fixing member from the radially inner side and holds the valve fixing member at the fixing position, and when the inner member is at the second position, the outer engagement recess and the valve fixing member become At the radially opposite position, the valve fixing member is displaced radially inward toward the outer engaging recess, whereby the valve fixing member can be displaced to the fixing release position.

In addition, when the valve fixing member is in the fixing release position, the valve member is engaged with the outer engagement recessed portion, and the valve member is fixed in the direction of the long axis with respect to the inner member, When the inner member is positioned on the third position side from the second position, the valve fixing member is supported from the radially outer side by the inner peripheral surface of the flow path member and held at the fixing release position. When the third position is displaced toward the second position, the valve member is displaced to the one position together with the inner member.

Preferably, when the inner member is displaced from the first position to the second position, it can abut against the valve member in the direction of the long axis.

Specifically, the operating portion includes: a handle rotatably attached to the flow path member; a shaft portion extending from the handle into the fluid passage; and a shaft portion and the inner member connecting the shaft portion in the fluid passage A link member, the handle is rotated and operated so that the inner member can be displaced between the first position and the third position through the shaft portion and the link member.

The present invention further provides a joint member comprising any one of the valve structures described above, the joint member for detachably connecting the corresponding joint member, and comprising: a cylindrical joint body constituting the flow path member; The locking member is held on the joint main body, protrudes radially inward from the inner peripheral surface of the joint main body, and engages with a locking groove of a corresponding joint member inserted into the joint main body, and can connect the corresponding joint member to the joint main body. the connection position of the joint body, and the displacement between the connection release position which is displaced radially outward from the connection position to release the connection with the corresponding joint member; and the sleeve has an inner peripheral surface on which a locking recess is formed, and is disposed so as to be displaceable on the peripheral surface of the joint body, and to be able to abut against the locking member at a restricting position that restricts the locking member to the connection position, and displacement between restriction release positions that allow the locking member to be displaced from the connection release position.

The present invention further provides a pipe joint comprising the above-mentioned joint member and a corresponding joint member detachably connected to the joint member, The corresponding joint member includes: a corresponding joint body that defines a corresponding fluid passage, and a corresponding valve member that can be displaced between a closed position disposed in the corresponding fluid passage to close the corresponding fluid passage and an open position to open the corresponding fluid passage , When the valve member of the joint member is displaced to the open position in a state where the joint member and the corresponding joint member are connected by the locking member, the corresponding valve member of the corresponding joint member pushes the valve member from the corresponding joint member The closed position is displaced to the open position.

Hereinafter, embodiments of the pipe joint according to the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, a pipe joint 1 according to an embodiment of the present invention is composed of a female joint member 2 (joint member) and a male joint member 3 (corresponding joint member) which can be detachably connected to this.

As shown in FIG. 2 , the female joint member 2 includes a fluid passage 10 and a cylindrical joint body 14 (flow passage member) having an insertion passage 12 connected to the fluid passage 10 . The connector body 14 is viewed from the front side (the right side when viewed in the figure) The outer member 14-1 and the inner member 14-2 are constituted by the rear member 14-3 on the rear side (the left side when viewed in the figure). An annular valve seat portion 16 protruding radially inward is formed on the inner peripheral surface 14 a of the inner member 14 - 2 that defines the fluid passage 10 . The female joint member 2 further includes a valve member 18 disposed in the fluid passage 10 and displaceable in the direction of the long 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 peripheral surface 14 a of the joint body 14 ; a valve body portion 22 that engages with the valve seat portion 16 ; and a diameter between the cylindrical sliding portion 20 and the valve body portion 22 The connecting portion 24 extending toward. The valve main body portion 22 is provided with a sealing member 26 , and the valve main body portion 22 seals and engages with the valve seat portion 16 through the sealing member 26 to close the fluid passage 10 . A plurality of flow passage holes 28 penetrating in the direction of the long axis L are formed in the connecting portion 24 . A holding hole 30 penetrating the radial direction is formed in the cylindrical sliding portion 20 , 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 connector member 2 further includes a valve operating member 34 for operating the opening and closing of the valve member 18 . The valve operating member 34 includes an inner member 36 disposed in the fluid passage 10 so as to be displaceable in the direction of the long axis L, and an operation portion 38 for operating the inner member 36 from outside the fluid passage 10 . The inner member 36 has: a sliding peripheral surface 40 that slides on the inner peripheral surface 20a of the cylindrical sliding portion 20 of the valve member 18; a peripheral engaging recess 42 formed in the sliding peripheral surface 40; a flow path hole 44 . The operation part 38 has: a handle 46 rotatably attached to the joint body 14; a shaft part 48 extending from the handle 46 into the fluid passage 10; and a link member connecting the shaft part 48 and the inner member 36 in the fluid passage 10 50 (Figure 3). The operation part 38 is configured to rotate the operation handle 46 through the shaft part 48 and the link member 50 to make the internal member 36 is displaced in the direction of the long axis L, operating the opening and closing of the valve member 18 . In the non-connected state shown in FIGS. 2 and 3 , the valve fixing member 32 is engaged with the inner peripheral engaging recess 52 formed on the inner peripheral surface 14a of the joint main body 14, and the valve member 18 in the closed position is positioned relative to the joint main body. 14 is located in a fixed position where the direction of the long axis L is fixed. In addition, the valve fixing member 32 is supported and held at a fixed position from the radially inner side by the sliding outer surface 40 of the inner member 36 .

The female joint member 2 further includes: a spherical locking member 54 held on the outer member 14-1 of the joint main body 14; (sleeve); an outer sleeve 58 that covers the inner sleeve 56 from the radially outer side and is displaceable relative to the joint body 14 and the inner sleeve 56; the sliding member 60. The outer member 14 - 1 of the joint main body 14 is formed with a holding hole 62 penetrating in the radial direction, 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. A rubber cover 64 is attached to the outer sleeve 58 . The sliding member 60 is disposed in the gap between the outer member 14 - 1 and the inner member 14 - 2 of the joint main body 14 . The joint main body 14 is formed with a through hole 66 penetrating in the radial direction, and a spherical first sleeve locking member 68 which can be displaced in the radial direction is arranged in the through hole 66 . In the inner sleeve 56 , a locking recess 70 is formed on the inner peripheral surface 56 a thereof, and a through hole 72 penetrating in the radial direction from the locking recess 70 is formed. The through-hole 72 of the inner sleeve 56 is provided with a cylindrical second sleeve locking member 74 which is displaceable in the radial direction. In the non-connected state shown in FIGS. 2 and 3 , the first sleeve locking member 68 is located at a position protruding radially outward from the outer peripheral surface 14 b of the joint body 14 and engaged with the inner sleeve 56 . At the locking position of the locking recessed portion 70 , the inner sleeve 56 is held at a restriction release position that does not restrict the locking member 54 by borrowing the first sleeve locking member 68 at the locking position. In addition, the second sleeve locking member 74 is located at a locking position that protrudes radially outward from the outer peripheral surface 56b of the inner sleeve 56 and is engaged with the locking recess 76 of the outer sleeve 58, and the outer sleeve 58 It is locked in the direction of the long axis L with respect to the inner sleeve 56 . As shown in the figure, the slide member 60 is held at the restraint position by the spring 78, and the first sleeve locking member 68 is supported from the radially inner side by the slide member 60 at the restraint position and restrained at the lock position. Furthermore, when the inner sleeve 56 is at the restriction release position and the outer sleeve 58 is at the restriction release holding position as shown in the figure, the first sleeve locking member 68 and the second sleeve locking member 74 are placed on the joint body 14 . Aligned in the radial direction, the second sleeve locking member 74 is held at the locking position by the first sleeve locking member 68 located at the locking position. Therefore, in the unconnected state, the inner sleeve 56 is held at the restriction release position and the outer sleeve 58 is held at the restriction release holding position shown in the figure.

The operating portion 38 of the valve operating member 34 further includes a displacement preventing portion 80 located outside the joint body 14 . The displacement preventing portion 80 is constituted by a fan-shaped displacement preventing member 82 fixed to the handle 46 as shown in FIG. 4 . As will be described later, the displacement preventing member 82 thereby restricts the connection between the opening and closing of the fluid passage 10 and the operation of the outer sleeve 58 , which restrict the rotational operation of the valve operating member 34 depending on the situation. In addition, the displacement preventing portion 80 may be configured as a part of the handle 46 or the shaft portion 48 .

The male joint member 3 includes a joint main body 86 (corresponding to the joint main body) defining the fluid passage 84 (corresponding to the fluid passage), and a valve member 88 (corresponding to the valve member) arranged in the fluid passage 84 . The valve member 88 is spring-biased toward a closed position in which the fluid passage 84 is closed by the spring 90 . A locking groove 92 for locking the upper locking member 54 of the female connector member 2 is formed on the outer peripheral surface 86 a of the joint main body 86 .

When the male joint member 3 is inserted into the insertion passage 12 of the female joint member 2, the joint body 86 of the male joint member 3 pushes the locking member 54 of the female joint member 2 radially outward and retreats to the disengaged position. Then, the sliding member 60 is pushed rearward (leftward as viewed in the figure) by the joint main body 86 of the male joint member 3 . When the receiving concave portion 94 formed on the outer peripheral surface 60 a of the sliding member 60 is at the restriction release position in which it is integrated with the first sleeve locking member 68 , the first sleeve locking member 68 becomes radially inward toward the receiving concave portion 94 . displacement state. The first sleeve locking member 68 is pressed radially inward by the inner sleeve 56 urged by the spring 96 , and becomes a locked release position in which the locking of the inner sleeve 56 is released. The inner sleeve 56 released from the engagement of the first sleeve locking member 68 is further displaced forward by the spring 96, and the locking member 54 is moved backward by the contact inclined surface 98 inclined radially inward. A limit position that is pushed radially inward. The locking member 54 is pressed radially inward by the abutting inclined surface 98 of the inner sleeve 56 , and becomes a connection position to be engaged with the locking groove 92 of the male joint member 3 . Thereby, the pipe joint 1 is brought into a connected state as shown in FIG. 5 . At this time, the locking member 54 comes into contact with the inclined surface 92 a inclined radially outward toward the front end side of the locking groove 92 . By causing the locking member 54 on the radially inner side to abut against the inclined surface 92a of the locking groove 92 by the contact inclined surface 98, the male joint member 3 is pulled into the insertion passage 12 of the female joint member 2 in the direction ( Figure looks at the force on the left). Thereby, the front end contact surface 86 b formed at the front end of the joint main body 86 of the male joint member 3 is pressed against the abutment sealing member 100 attached to the female joint member 2 , and the gap between the male joint member 3 and the female joint member 2 is maintained. seal. In addition, the seal between the male joint member 3 and the female joint member 2 may be formed by a metal seal in which the metal surfaces directly abut against each other. In addition, the second sleeve locking member 74 cannot be supported from the radially inner side by the first sleeve locking member 68, and can be displaced radially inward. Therefore, the outer sleeve 58 cannot be locked with the inner sleeve 56 , and is in a state of being able to displace forward relative to the inner sleeve 56 .

In the connected state of FIG. 5 , the handle 46 is in the closing operation position in which the valve member 18 of the female joint member 2 is 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. The closed position of each fluid passage 10 , 84 . When the handle 46 is rotated counterclockwise when viewed from above, and the inner member 36 is displaced from the first position in FIG. 5 to the second position in FIG. The valve fixing member 32 is in a radially opposite position. Thereby, the valve fixing member 32 can be displaced radially inward toward the peripheral engaging recess 42 . When the valve fixing member 32 is displaced radially inward from the fixed position, the engagement with the joint body 14 is released, and the valve member 18 becomes a fixed release position displaceable in the direction of the long axis L with respect to the joint body 14 . Moreover, when the inner member 36 is in the second position, it abuts against the valve member 18 in the closed position in the direction of the long axis L. The displacement preventing member 82 is also rotated in conjunction with the rotation operation handle 46 , and the outer sleeve 58 is pushed and displaced forward by the displacement preventing member 82 .

When the handle 46 is further rotated counterclockwise, the inner member 36 exceeds the second position in FIG. 6 and becomes the third position in FIG. 7 which is displaced further forward. The valve member 18 of the female connector member 2 is pushed by the inner member 36 and displaced to the open position which opens the fluid passage 10 . In addition, the valve member 88 of the male joint member 3 is pressed by the valve member 18 of the female joint member 2 to be displaced to the open position to open the fluid passage 84 . Thereby, the fluid passage 10 of the female joint member 2 and the fluid passage 84 of the male joint member 3 are brought into a state of communication. The handle 46 restricts the rotation range so that the link member 50 is only rotated to the position of FIG. 8 . In the state of FIG. 8 , the axial center C1 of the link member 50 with respect to the shaft portion 48 is positioned above the long axis L passing through the rotation center C2 of the shaft portion 48 as viewed in FIG. 8 . Although the valve member 18 and the inner member 36 of the female joint member 2 are subjected to the rearward force by the spring 90 of the male joint member 3, the force is generated from the position of the link member 50 as described above, and the shaft portion 48 and the handle 46 are moved toward each other. Moment of rotation in a counterclockwise direction. Therefore, the inner member 36 receives the force from the valve member 18 when the inner member 36 is located at the third position, whereby the inner member 36 is not displaced to the second position and the first position due to the counterclockwise rotation of the handle 46 .

When the inner member 36 is located on the side of the third position ( FIG. 7 ) rather than the second position ( FIG. 6 ), the valve fixing member 32 is supported from the radially outer side by the inner peripheral surface 14 a of the joint body 14 , and is held relative to the valve fixing member 32 . The fixed release position where the engagement of the joint body 14 is released. The valve fixing member 32 is engaged with the inner member 36 to fix the valve member 18 in the direction of the long axis L with respect to the inner member 36 in a state where the valve fixing member 32 is held at the unlocked position. Therefore, when the operation handle 46 is rotated clockwise to displace the inner member 36 from the third position to the second position, the valve member 18 is displaced to the closed position together with the inner member 36 .

When the inner member 36 is positioned between the second position and the third position, the displacement preventing member 82 has its arcuate outer surface 82 a at a displacement preventing position facing the outer sleeve 58 . The displacement preventing member 82 at the displacement preventing position prevents the outer sleeve 58 from being displaced to the rear side of the restriction release holding position from the restriction allowable position shown in FIGS. 6 and 7 . At this time, the engaging surface 58 a of the outer sleeve 58 is at a position away from the inner sleeve 56 . Therefore, the inner sleeve 56 cannot be operated by the outer sleeve 58 . In addition, 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, the inner sleeve 56 cannot be displaced from the restriction position to the restriction release position in a state where the outer sleeve 58 is restricted at the restriction allowable position by the displacement preventing member 82 .

When the coupling of the female joint member 2 and the male joint member 3 is released, the inner member 36 is first displaced to the first position and returned to the state of FIG. 5 in which the valve member 18 is the closed position. At this time, the displacement preventing member 82 rotates together with the handle 46 to a displacement allowing position where the arcuate peripheral surface 82 a and the outer sleeve 58 do not face each other. Thereby, the outer sleeve 58 can be displaced to the restraint release holding position. When the outer sleeve 58 is displaced to the rearward restraint release holding position, the engaging surface 58a of the outer sleeve 58 engages with the inner sleeve 56 and displaces the inner sleeve 56 and the outer sleeve 58 rearward together. When the outer sleeve 58 is displaced to the restriction releasing holding position, the inner sleeve 56 becomes the restriction releasing position where the restriction of the locking member 54 is released. When the male joint member 3 is pulled out from the female joint member 2 while the outer sleeve 58 is in the restraint release holding position, the locking member 54 is displaced to the radially outer side to the disconnection position where the connection with the male joint member 3 is released, and the female joint member 3 is released. The joint member 2 and the male joint member 3 are connected (FIG. 2). When the pin member 3 is withdrawn from the insertion passage 12, the slide member 60 in the restriction release position is displaced forward to return the first sleeve locking member 68 to the restriction position restricted to the locking position (FIG. 2). When the slide member 60 becomes the restriction position, the first sleeve locking member 68 becomes the locking position for locking the inner sleeve 56 . Then, the second sleeve locking member 74 becomes a locking position for locking the outer sleeve 58, locks the inner sleeve 56 at the restriction release position, and locks the outer sleeve 58 to the inner sleeve at the restriction release holding position 56.

In the unconnected state of FIG. 2 , the side surface 82 b of the displacement preventing member 82 is in a position close to the rear end surface 58 b of the outer sleeve 58 . In addition, the outer sleeve 58 is locked to the joint body 14 through the inner sleeve 56 . When the handle 46 of the valve operating member 34 is rotated as described above to displace the valve member 18 to the open position, the side surface 82b of the displacement preventing member 82 is engaged with the rear end surface 58b of the outer sleeve 58, preventing further rotation of the handle 46 . That is, the unconnected state prevents the handle 46 from being rotated from the closed operation position to the open operation position, thereby preventing the valve member 18 from being displaced to the open position.

The female joint member 2 of the pipe joint 1 does not have a sliding seal structure that seals while sliding between the valve member 18 and the inner peripheral surface 14a of the joint body 14 when the valve member 18 is displaced between the closed position and the open position. Therefore, it is not necessary to use the required lubricant in the fitting with the conventional spool valve. In addition, there is no sliding frictional resistance between the valve member 18 and the joint body 14, or the urging force of the spring, and thus the force required to displace the valve member 18 between the closed position and the open position can be reduced. In addition, in the female joint member 2 of the pipe joint 1, the valve member 18 is fixed to the joint main body 14 by the valve fixing member 32 when the valve member 18 is in the closed position. When the high-pressure fluid fills the fluid passage 10 with the valve member 18 in the closed position, the valve member 18 receives a large pressure from the internal fluid, but the force does not act on the valve operating member 34 . Therefore, the number of movable parts of the link mechanism and the like becomes relatively large, and it is not necessary to further increase the strength of the valve operating member 34 of the mechanism which is likely to be complicated. As a result, the pressure resistance can be improved, and the entire valve operating member 34 can be designed to be small. In addition, the inner sleeve 56 cannot be substantially displaced in the connected state, and there is no possibility that the locking member 54 may be released or weakened due to the erroneous pressing of the inner sleeve 56 on the locking member 54, thereby preventing the unintentional release of the female connector member 2 from the male connector 54. Seal engagement between the joint members 3 .

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments. For example, the valve structure including the valve member, valve fixing member, valve operating member, etc. of the above-described embodiment may be used for flow path members other than joint members such as piping. In addition, the valve member may be fixed to the joint main body or the flow path member by the valve fixing member at the open position. When the inner member of the valve operating member is displaced from the second position to the third position, the valve member may be indirectly pressed by the inner member through another member. As the above-mentioned structure, for example, the valve fixing member is a cylindrical or corner-column-shaped member extending radially. When the inner member is in the second position, the inner member is displaced radially inward by gravity or the urging force of the spring to become the fixed position. It is a structure in which the valve member is pushed and displaced by the valve fixing member. In addition, the displacement direction of the inner sleeve and the outer sleeve is not the direction of the long axis, but may be the direction of rotation centering on the long axis. In addition, the inner sleeve and the outer sleeve are not necessarily separate members, and may be a single sleeve or a structure in which the second sleeve locking member is omitted. The specific structure of the valve operating member can be appropriately changed, and for example, other operating forms such as an operating lever can be used instead of the handle, and other mechanisms such as a cam mechanism can be used instead of the link mechanism.

1: pipe joint 2: Female connector components 3: Male connector components 10: Fluid access 12: Insertion access 14: Connector body 14-1: Outer member 14-2: Inner member 14-3: Rear Components 14a: Inner and peripheral surfaces 14b: Peripheral face 16: Valve seat 18: Valve member 20: Cylindrical sliding part 20a: Inner and peripheral surfaces 22: Valve main body 24: Links 26: Sealing member 28: Flow path hole 30: Hold the hole 32: Valve fixing member 34: Valve operating member 36: Internals 38: Operation Department 40: Sliding peripheral surface 42: Peripheral engaging recess 44: flow path hole 46: handle 48: Shaft 50: Connecting rod member 52: Inner and peripheral engaging recesses 54: Locking member 56: Inner sleeve 56a: Inner and peripheral surfaces 56b: Peripheral face 58: Outer sleeve 58a: engaging surface 58b: rear face 60: Sliding member 60a: Peripheral surface 62: Hold Hole 64: Cover 66: Through hole 68: 1st sleeve locking member 70: Locking recess 72: Through hole 74: Second sleeve locking member 76: Locking recess 78: Spring 80: Displacement preventing part 82: Displacement preventing member 82a: Arc-shaped peripheral surface 82b: side 84: Fluid Path 86: Connector body 86a: Peripheral face 86b: Front end contact surface 88: Valve member 90: Spring 92: Locking groove 92a: Inclined surface 94: Receiving recess 96: Spring 98: Abutting the inclined surface 100: Abutting the sealing member C1: Shaft center C2: center of rotation L: long axis

Fig. 1 is a perspective view of a non-connected state of a pipe joint according to an embodiment of the present invention.

[Fig. 2] is a side sectional view of the pipe joint of Fig. 1. [Fig.

[ Fig. 3 ] A cross-sectional view of the female connector member along the line A-A of Fig. 2 .

[ FIG. 4 ] is a perspective view of the displacement preventing member.

[ Fig. 5] Fig. 5 is a side cross-sectional view showing a connected state of the pipe joint of Fig. 1 .

[ Fig. 6] Fig. 6 is a side cross-sectional view showing a state in which the internal member of the valve operating member is displaced to the second position.

[ Fig. 7] Fig. 7 is a side cross-sectional view showing a state in which the internal member of the valve operating member is displaced to the third position and the valve member is at the open position.

[ Fig. 8 ] is a cross-sectional view taken along the line B-B in Fig. 7 .

1: pipe joint

2: Female connector components

3: Male connector components

10: Fluid access

12: Insertion access

14: Connector body

14-1: Outer member

14-2: Inner member

14-3: Rear Components

14a: Inner and peripheral surfaces

14b: Peripheral face

16: Valve seat

18: Valve member

20: Cylindrical sliding part

20a: Inner and peripheral surfaces

22: Valve main body

24: Links

26: Sealing member

28: Flow path hole

30: Hold the hole

32: Valve fixing member

34: Valve operating member

36: Internals

38: Operation Department

40: Sliding peripheral surface

42: Peripheral engaging recess

44: flow path hole

46: handle

48: Shaft

50: Connecting rod member

52: Inner and peripheral engaging recesses

54: Locking member

56: Inner sleeve

56a: Inner and peripheral surfaces

56b: Peripheral face

58: Outer sleeve

58a: engaging surface

58b: rear face

60: Sliding member

60a: Peripheral surface

62: Hold Hole

64: Cover

66: Through hole

68: 1st sleeve locking member

70: Locking recess

72: Through hole

74: Second sleeve locking member

76: Locking recess

78: Spring

80: Displacement preventing part

82: Displacement preventing member

82a: Arc-shaped peripheral surface

82b: side

84: Fluid Path

86: Connector body

86a: Peripheral face

86b: Front end contact surface

88: Valve member

90: Spring

92: Locking groove

92a: Inclined surface

94: Receiving recess

96: Spring

98: Abutting the inclined surface

100: Abutting the sealing member

L: long axis

Claims (8)

A valve structure having: a flow path member having a fluid path and having an annular valve seat portion on an inner peripheral surface that defines the fluid path; a valve member disposed in the fluid passage, sealingly engaged with the valve seat portion, and displaceable in the direction of the long axis of the fluid passage between a closed position that closes the fluid passage and an open position that opens the fluid passage; The valve fixing member is arranged to be displaceable in the radial direction of the fluid passage with respect to the flow passage member and the valve member, and the valve member can be engaged with the valve member when the valve member is located at one of the closed position and the open position. The flow path member and the valve member fix the fixed position of the valve member relative to the flow path member in the direction of the long axis, and release the engagement with respect to at least one of the flow path member and the valve member to make the the valve member can be displaced between the fixed release position in a state in which the closed position and the open position are displaced toward the other of the open positions; and A valve operating member is a valve operating member for operating the valve member, and has an internal member disposed so as to be displaceable in the fluid passage, and an operating portion for operating the internal member from outside the fluid passage, the internal member is a first position in the direction of the long axis that can hold the valve fixing member at the fixed position; a second position that allows the valve fixing member to be displaced in the fixed release position; and a second position that is further displaced beyond the second position 3-position displacement, the inner member engages with the valve member located at the one position when displaced from the first position to the second position, and causes the valve member to be displaced from the second position to the third position from the one position to the other position. The valve structure according to claim 1, wherein the valve member has a cylindrical sliding portion that slides on an inner peripheral surface of the flow path member, and a holding hole that penetrates the cylindrical sliding portion in the radial direction, the The valve fixing member is held in the holding hole so as to be displaceable in the radial direction, having an inner circumference engaging recess on which the flow channel member is formed on the inner circumference surface, The valve fixing member engages with the inner peripheral engaging recess at the fixing position and fixes the valve member relative to the flow path member in the long axis direction. The valve structure according to claim 2, wherein the inner member has a sliding peripheral surface on which the valve member slides on an inner peripheral surface of the cylindrical sliding portion, and a peripheral engaging recess formed on the sliding peripheral surface, When the inner member is at the first position, the sliding outer surface supports the valve fixing member from the radially inner side and holds the valve fixing member at the fixing position, and when the inner member is at the second position, the outer engagement recess and the valve fixing member become At the radially opposite position, the valve fixing member is displaced radially inward toward the outer engaging recess, whereby the valve fixing member can be displaced to the fixing release position. The valve structure according to claim 3, wherein the valve fixing member is engaged with the outer engagement recessed portion when the valve fixing member is in the fixing release position, and the valve member is fixed in the direction of the long axis with respect to the inner member, When the inner member is positioned on the third position side from the second position, the valve fixing member is supported from the radially outer side by the inner peripheral surface of the flow path member and held at the fixing release position. When the third position is displaced toward the second position, the valve member is displaced to the one position together with the inner member. The valve structure according to claim 1, wherein when the inner member is displaced from the first position to the second position, it abuts against the valve member in the direction of the long axis. The valve structure according to claim 1, wherein the operation portion includes: a handle rotatably attached to the flow path member; a shaft portion extending from the handle into the fluid path; and connected in the fluid path The shaft portion and the link member of the inner member are rotated to operate the handle so that the inner member can be displaced between the first position and the third position through the shaft portion and the link member. A joint member comprising the valve structure according to any one of Claims 1 to 6, the joint member for detachably connecting the corresponding joint member, and comprising: a cylindrical joint body constituting the flow path member; The locking member is held by the joint main body, protrudes radially inward from the inner peripheral surface of the joint main body, engages with a locking groove of a corresponding joint member inserted into the joint main body, and connects the corresponding joint member to the joint body. Displacement between the connection position of the joint body and the connection release position which is displaced radially outward from the connection position to release the connection with the corresponding joint member; and the sleeve has an inner peripheral surface on which a locking recess is formed, and is disposed so as to be displaceable on the peripheral surface of the joint body, and to be able to abut against the locking member at a restricting position that restricts the locking member to the connection position, and displacement between restriction release positions that allow the locking member to be displaced from the connection release position. A pipe joint comprising the joint member according to claim 7, and a corresponding joint member releasably connected to the joint member, The corresponding joint member includes: a corresponding joint body that defines a corresponding fluid passage, and a corresponding valve member disposed in the corresponding fluid passage and displaceable between a closed position that closes the corresponding fluid passage and an open position that opens the corresponding fluid passage , When the valve member of the joint member is displaced to the open position in a state where the joint member and the corresponding joint member are connected by the locking member, the corresponding valve member of the corresponding joint member is pressed against the valve member from the valve member. The closed position is displaced to the open position.

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