JP2694426B2 - Plug-in connection type pipe fitting device with on-off valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug-in connection type pipe joint device with an on-off valve, and more particularly to a plug-in connection of a male joint member to a female joint member inside a pipe joint body having an on-off valve. The present invention also relates to a plug-in connection type pipe joint device with an on-off valve, which is configured to be easily detached.

[0002]

2. Description of the Related Art A conventional plug-in connection type pipe joint device with an on-off valve of this type is shown in FIG.

FIG. 19 shows a schematic configuration of a conventional plug-in connection type pipe joint device with an on-off valve, which is divided into a non-connection closed state (upper half) and a connection opened state (lower half). It is the whole longitudinal cross-sectional view.

That is, in the conventional plug-in connection type pipe joint device with an on-off valve, the internal flow path 5 on the primary side in the axial direction can be seen as seen in the upper half structure shown as the non-connection closed state in FIG.
1a is formed, and the inner surface of the main body 51 of the pipe joint 51, which is separated from the step portion 51b, is sealed by a seal ring 52a, and a valve seat 52b is formed on the inner end surface portion of the shaft. Is fixed to a valve seat member 52 slidable in a direction and a locking ring 53a to form pressing surfaces 53b and 53c on an inner peripheral surface and an outer peripheral surface on the outer end side, respectively, and A restraint member 53 having a plurality of engagement balls 53d fitted therein is disposed in an inner engagement hole 53e adjacent to the pressing surfaces 53b and 53c, and a seal ring 54 is provided on an inner peripheral surface of the valve seat member 52.
A female joint member 54 that is sealed by a and is slidable along the inner peripheral surface of the restraint member 53 is arranged, and further slides along the outer peripheral surface of the pipe joint main body 51 on the outer end surface side. An enabled release member 55 is arranged.

[0005] The female joint member 54 has a valve head 54b with a valve seal 54c on the inner end face side, and has a connection flow passage 54d and a valve head 54 that are open axially inside to the outer end face side.
Communication passages 54e that are open to the outer peripheral surface side adjacent to b are formed respectively, and an abutting step portion 54f is formed inside the outer end surface side, and an outer flow passage of the abutting step portion 54f. A seal ring 54g is provided on the inner surface, the outer end surface is a restraining surface 54h, the inner side on the outer end surface side is a tapered surface 54i, and the outer side is a pushing surface 54j. And the female joint member 5
4 is a pressing spring 5 between the valve seat member 52 and the outer peripheral surface side.
6, the valve seal 5 of the valve head 54b is interposed.
4c is pressed against the valve seat 52b to shut off between the flow paths, that is, to perform the expected valve closing action, and at the same time, to make the restraining surface 54h abut on the pressing surface 53b to restrain the sliding.

The release member 55 has an inclined cam surface 55a formed on the inner side on the outer end surface side, and a pressing surface 55b formed on an inner peripheral surface on the inner end surface side connected to the cam surface 55a. Each release member 55 is partially exposed on the outer peripheral surface of the restraining member 53 by interposing a pressing spring 57 on the inner peripheral surface side with the outer end surface of the pipe joint body 51. The cam surface 55a is pressed against the combined ball 53d.

On the other hand, a male joint member 61 plug-in connected to the female joint member 54 in the pipe joint body 51,
As seen in the lower half configuration shown as the connected valve opening state in FIG. 19, the secondary side internal flow path 61a is formed in the axial direction, and the contact end portion 54g is abutted from the connection end portion side. A pressing surface 61b that is pressed, an outer peripheral surface 61c that is sealed by the seal ring 54g, a tapered surface 61d that abuts the tapered surface 54i, and an engagement groove 61e that engages the engagement balls 53d are formed respectively. I am doing it.

Therefore, in the case of the conventional plug-in connection type pipe joint device with an on-off valve having the above-mentioned structure, in the upper half structure shown as the non-connection closed valve state in FIG. 19, the female joint member 54 is used.
The male joint member 61 is not plugged in to the female joint member 54 by the pressing spring 56.
And the valve seat member 52 are pressed in the opposite directions of the inner end surface side and the outer end surface side, and the restraining surface 54h of the female joint member 54 becomes the pressing surface 53b on the inner peripheral surface side of the restraining member 53. The valve seal 54c of the female joint member 54 is brought into contact with the step portion 5 and
By being pressed against the valve seat 52b of the valve seat member 52 at a position distant from 1b, the flow paths 51a and 54d of both are kept closed, and in this closed state,
The push-out surface 54j of the female joint member 54 pushes out the engaging balls 53d of the restraint member 53 to the outer peripheral side to partially expose them, and the pressing spring 57 presses the release member 55 toward the outer end surface side. The cam surface 55a is attached to each engagement ball 53.
By contacting the exposed portion of d, the release member 55 is maintained in the valve closed position.

Next, in the lower half structure shown in the connection open state of FIG. 19, the pressing spring is applied to the female joint member 54 of the pipe joint main body 51 from the outer end side in the non-connection closed state. By pushing in the male joint member 61 against the pressing force of 56, the desired plug-in connection is made.

First, the connection end side of the male joint member 61 is inserted into the outer end side of the female joint member 54 in the non-connection closed state. That is, when the pressing surface 61b of the male joint member 61 is brought into contact with the butting step portion 54g of the female joint member 54, the outer peripheral surface 61c is sealed by the seal ring 54g and the tapered surface 54d is formed on the tapered surface 61d. Abut.

Next, in this inserted state, when the male joint member 61 is pushed in against the pressing force of the pressing spring 56, the female joint member 54 moves to the inner end side and the valve seat is formed. The member 52 moves until it comes into contact with the stepped portion 51b, and then the valve seal 54c is separated from the valve seat 52b to open the valve. At the same time, with the movement of the pushing surface 54j, each engaging ball of the restraining member 53 is moved. After the restraint of 53d is released, each engaging ball 53d falls into the engaging groove 61e of the male joint member 61 due to the cam action of the cam surface 55a of the releasing member 55 pressed by the pressing spring 57. At the same time, the releasing member 55 moves to the valve opening position and is held by the pressing surface 55b, and the cam surface 55a abuts against the pressing surface 53c on the outer peripheral surface side to shift to the connected valve opening state. In this connection open state, the arrow in the figure As described above, the fluid flows from the internal flow path 51a on the primary side to the connection flow path 54d on the secondary side and the internal flow path 61a via the communication flow path 54e on the secondary side with the valve portion as a boundary. It will be.

Further, in order to shift from the connection open state to the non-connection closed state, the release member 55 moving to the valve open position is moved to the valve closed position against the pressing force of the pressing spring 57. It suffices to move the release member 55 to the valve closing position to release the engagement of the engagement balls 53d with the engagement groove 61e. The pressing force of 56 automatically returns to the original state to perform the valve closing action, and in the valve closing state, the male joint member 61 can be easily pulled out from the female joint member 54.

[0013]

However, in the case of the conventional plug-in connection type pipe joint device with an on-off valve having the above-mentioned structure, since the on-off valve mechanism is integrated with the female joint member, the overall structure is improved. Not only becomes extremely complicated itself, but also has the disadvantage of lacking smoothness in the flow of fluid because there is an on-off valve mechanism that blocks the inside of the flow path, and in addition to this, Since it is necessary to obtain an accurate valve closing action, the elastic force of the pressing spring between the valve seat member and the female joint member is set strongly, and the internal pressure applied to the area of the valve causes the female joint member to be pressed. There is a problem that the pushing force of the male joint member is strong and the plug-in connection operation is not easy.

On the other hand, since the release member for disconnecting the connection is always in the release operation state, the release member may be accidentally released, and further, the valve open state is changed to the valve close state. In doing so, since there is no means for purging the fluid pressure on the secondary side remaining in the male joint member, there is a drawback that the releasing operation involves a risk.

The present invention has been made in order to solve each of the above-mentioned conventional problems, and the purpose thereof is to smooth the flow of fluid and also to simplify the connecting mechanism. At the same time, it is an object of the present invention to provide a plug-in connection type pipe joint device of this kind with an on-off valve, which prevents erroneous operation and can obtain a fluid pressure purging action on the secondary connection side as necessary.

[0016]

To achieve the above object, in a plug-in connection type pipe joint device with an on-off valve according to the present invention, an on-off valve mechanism and a joint mechanism are separately set, and both mechanisms are set. Is connected to perform the erroneous operation prevention function, and the secondary side fluid pressure purging function can be connected as necessary.

That is, the invention according to claim 1 of the present invention is a pipe joint device for plugging in an external male joint member to a female joint member provided in an internal passage of a pipe joint body. There is an opening / closing valve mechanism portion having an opening / closing valve for opening / closing the internal flow path in the pipe joint body, and having cam means interlocking with the opening / closing operation of the opening / closing valve, and to the female joint member. Of the engaging means for holding the connected state of the male joint member, and a joint mechanism portion having a releasing means for releasing the holding of the engaging means, respectively, and the valve opening of the opening / closing valve mechanism portion, By the cam means that is operated in association with each valve closing operation, the release means is locked and locked according to the valve opening operation during the valve opening operation, and the valve closing operation is performed during the valve closing operation. Configured to release the restraint of the release means. A plug-in connection type pipe coupling device with on-off valve, characterized.

The invention according to claim 2 of the present invention is a pipe joint device for connecting an external male joint member to a plug-in connection with a female joint member provided in an internal flow path of a pipe joint body. There is an opening / closing valve mechanism portion having an opening / closing valve for opening / closing the internal flow path in the pipe joint body, and having cam means interlocking with the opening / closing operation of the opening / closing valve, and to the female joint member. And a joint mechanism section having an engagement means for holding the connected state of the male joint member, and a release means for releasing the holding of the engagement means, and a purge for purging the secondary side fluid pressure in the flow path. And a fluid pressure purging mechanism section having means for incorporating the fluid pressure purging mechanism section into each of the opening and closing valve mechanism section by the cam means which is operated in association with the opening and closing operations of the opening and closing valve mechanism section. The release means is restrained and locked according to the operation, and the purge hand is operated. Of the plug-in connection with an on-off valve, characterized in that when the valve is closed, the release means is released from the restraint and the purge means is opened when the valve is closed. It is a type pipe joint device.

[0019]

Therefore, in the plug-in connection type pipe joint device with an on-off valve according to the first aspect of the present invention, the cam means which is operated to operate by opening and closing the on-off valve mechanism is operated. Thus, during the valve opening operation, the release means can be restrained and locked together with the valve opening operation to prevent an erroneous operation, and during the valve closing operation, the release means can be released from the restraint together with the valve closing operation.

Further, in the plug-in connection type pipe joint device with an on-off valve according to claim 1 of the present invention, the cam means which is operated to operate by opening and closing the on-off valve mechanism portion is operated. Thus, at the time of valve opening operation, the release means is restrained and locked together with the valve opening operation to prevent erroneous operation, and the purge means is purged closed, and at the time of valve closing operation, it is released together with the valve closing operation. The means may be unconstrained and the purge means may be purged open.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, different embodiments of a plug-in connection type pipe joint device with an on-off valve according to the present invention will be described with reference to FIGS.
This will be described in detail with reference to FIG.

First Embodiment Device FIGS. 1 to 5 show a first embodiment to which the first embodiment of the present invention is applied.
FIG. 1 shows a basic plug-in connection type pipe joint device with an on-off valve, wherein FIG. 1 is an overall longitudinal sectional view showing a schematic configuration of a valve closed state by non-connection, and FIG. 2 is a side view of the same. Three
FIG. 4 is a schematic plan view of the erroneous operation prevention cam plate portion, and FIG. 4 is an overall vertical cross-sectional view showing a schematic configuration of a valve opening state associated with connection, FIG. 5 is a side view of the same, and FIG. 7 is a schematic plan view of an erroneous operation prevention cam plate portion.

The apparatus according to the first embodiment includes an opening / closing valve mechanism portion for opening and closing an internal flow passage, a joint mechanism portion for a female joint member for plug-in connection of a male joint member, in the pipe joint body.
A fluid pressure purging mechanism portion for purging the fluid pressure on the secondary side is incorporated into each of them, and is linked to the valve opening operation of the opening / closing valve mechanism portion, and simultaneously with the valve opening operation, a restraining action of the male joint member, It is possible to obtain a fluid pressure purge closing action on the secondary side, and in conjunction with the valve closing operation of the opening / closing valve mechanism, simultaneously with the valve closing action, the releasing action of the male joint member and the secondary action It is configured so that the fluid pressure purge release action on the side can be obtained.

That is, in the first embodiment apparatus shown in FIGS. 1 to 6, the plug-in connection type pipe joint device with an on-off valve is provided with the pipe joint body 1 and is incorporated in the pipe joint body 1 respectively. On-off valve mechanism unit 11 for opening and closing the flow path
, A joint mechanism portion 21 for connecting the external male joint member 41 by plug-in connection, and a fluid pressure purge mechanism portion 31.

As shown in FIG. 1, the pipe joint body 1 has a hexagonal tubular shape corresponding to the opening / closing valve mechanism portion 11 side, and has a joint mechanism portion 21 side and a fluid pressure purge mechanism portion 31 side. Correspondingly, it is formed into a cylindrical shape, and the internal flow path 2 is formed inside in the axial direction.
Together with, for example, a communication space 5 communicating with the internal flow path 4 of the connection pipe 3 and a hexagonal cylindrical shape of the outer periphery on the inner end side where the connection pipe 3 mounted on a fluid pressure generation source or the like is screwed. A valve shaft hole 6 opening to the surface 1a is formed, and a seal ring 8 is provided on the inner side of the outer end portion side with a step portion 7 therebetween.
A plurality of purge holes 9 opening to the outer peripheral cylindrical surface 1b are formed in the middle portion of the internal flow path 4.

Further, the opening / closing valve mechanism section 11 is provided with a first
In the case of the embodiment, an opening / closing valve that is a ball valve that is independently incorporated into the pipe joint body 1 and that can be opened / closed from the outside is used, and is fixedly installed inside the communication space 5. A valve seat member 12, a ball valve member 13 that is rotatably fitted in the valve seat member 12 and forms a valve flow path 13a in a required direction, and is rotatable with respect to the ball valve member 13. And the valve shaft 14 that is slit-engaged with the valve shaft 14 and is taken out from the valve shaft hole 6 through the valve seal 14a, and the shaft part that is taken out of the valve shaft 14 through a spring washer or the like. Each of them has an erroneous operation preventing cam plate 15 and a valve operating handle 16 provided with a valve rotation angle regulating means which will be described later, and the erroneous operation preventing cam plate 15 and the valve operating handle 16 are provided in the valve. It is integrally fixed on the shaft 14 by a lock nut 17.

Here, as shown in FIGS. 2 and 3, the erroneous operation preventing cam plate 15 is provided with the ball valve member 13.
A guide cam surface 15a that follows the valve opening direction and a restriction cam surface 15b that is connected to the guide cam surface 15a.
Further, as the valve rotation angle regulating means of the valve operation handle 16, the hexagonal cylindrical surface 1a on the outer periphery of the pipe joint body 1 is used to determine the rotation angle of the ball valve member 13, that is, the valve closing position. The restriction protrusion 16a that restricts the valve opening position is bent.

Therefore, the on-off valve mechanism portion 11 having the above-mentioned structure
In the case of the non-connecting closed state shown in FIGS. 1 to 3, the restricting projection 16a of the valve operating handle 16 collides with the one end surface side of the hexagonal cylindrical surface 1a in the axial direction of the pipe joint body 1. The ball valve member 13 is rotated to a contacting position, here an orthogonal position, to operate the ball valve member 13 in the valve closing position, and the restricting cam surface 15b of the misoperation preventing cam plate 15 is apart from the restricting position and occupies a right angle position. Moved and held in position.

Next, in the connection valve open state shown in FIGS. 4 to 6, the restricting projection 16a of the valve operating handle 16 is located on the other end surface side of the hexagonal tubular surface 1a with respect to the axial direction of the pipe joint body 1. The valve operating handle 16 is rotated to a position in which the valve operating handle 16 comes into contact with the valve operating member 16 to move the ball valve member 13 to the valve opening position, and the restricting cam surface 15b of the erroneous operation preventing cam plate 15 is not restricted. It will be moved to the position and held.

As shown in FIG. 1, the joint mechanism portion 21 slides on a restraining member 22 screwed to the outer end side of the pipe joint body 1 and an inner peripheral surface of the restraining member 22. It has a female joint member 23 freely fitted and a release member 24 slidably fitted on the outer peripheral surface of the restraining member 22.

Here, the restraining member 22 has a pressing surface 22a on the inside of the outer peripheral surface and a pressing surface 22a on the inside of the outer peripheral surface.
22b, and each of the pressing surfaces 22a, 22b
A plurality of engagement balls 25 in the inner engagement hole 22c adjacent to
Is inserted.

The female joint member 23 has a constraining surface 23a on the outer end surface and a tapered surface 23 on the inner peripheral surface.
b, it has an annular shape with the extruded surface 23c formed on the outer peripheral surface. The female joint member 23 has a pressing spring 26 on the outer peripheral surface side between the female joint member 23 and the outer end surface of the pipe joint body 1.
The stopper surface 2 of the restraint member 22
The restraining surface 23a is brought into contact with the 2a to restrain the sliding thereof, and the pushing surface 54j pushes the engaging balls 25 of the restraining member 53 to the outer peripheral side to partially expose the engaging balls 25. In this case, the pressing spring 26 that exerts a pressing action on the female joint member 23 does not also serve to close the valve portion as in the conventional case described above, but simply the female joint member 23. It is not necessary to maintain a strong pressing force, because only the pressure is suppressed.

Further, the release member 24 has an inclined cam surface 24a formed on the inner side of the outer end surface, and the cam surface 2 is formed.
A pressing surface 24b is formed on the inner peripheral surface on the inner end surface side connected to 4a, and an inner edge 24c is formed on the inner end surface. Each release member 24 is partially exposed on the outer peripheral side of the restraining member 22 by interposing a pressing spring 27 on the inner peripheral surface side with the outer end surface of the pipe joint body 1. Ball 25
Against the cam surface 24a.

On the other hand, the male joint member 41 plug-connected to the female joint member 23 in the pipe joint body 1 is shown in FIG.
As shown in the figure, the secondary side internal flow path 4
2 and the outer peripheral surface 41a sealed by the seal ring 8 and the tapered surface 23 from the connection end side.
The engagement groove 41c for engaging the respective engagement balls 25 with the tapered surface 41b abutting on b.

Therefore, in the case of the joint mechanism portion 21 having the above-mentioned structure, the plug-in connection of the male joint member 41 to the female joint member 23 is not made in the non-connection closed valve state shown in FIGS. By the pressing spring 26, the restraining surface 23a of the female joint member 23 is brought into contact with the pressing surface 22a on the inner peripheral surface side of the restraining member 22 and the pushing surface 23c.
Presses each engaging ball 25 of the restraint member 22 to the outer peripheral side to partially expose the engaging ball 25, and the pressing member 27 presses the release member 24 toward the outer end surface side to expose the cam surface 24a of each engaging ball 25. By abutting on the portion, the release member 2
4 is kept in the closed position.

Subsequently, in the connection open state shown in FIGS. 4 to 6, the female joint member 23 is in the non-connection closed state.
On the other hand, by pushing the connection end side of the male joint member 41 against the pressing force of the pressing spring 26 from the outer end side, the outer peripheral surface 41a of the male joint member 41 is inside the pipe joint body 1. Is sealed by the seal ring 8 and has a tapered surface 41b.
Is contacted with the taper surface 23b of the female joint member 23, and after the push-out surface 23c of the female joint member 23 is moved, the restraint of each engagement ball 25 of the restraint member 22 is released. By the cam action of the cam surface 24a of the release member 24 which is pressed by the pressing spring 27, the respective engagement balls 25 fall into the engagement groove 41c of the male joint member 41 and are engaged, and the release member 24 moves to the valve opening position and is held by the pressing surface 24b, and the cam surface 24a abuts the pressing surface 22b on the outer peripheral surface side to shift to the connection opening state. In, the fluid flows from the primary side of the internal flow path 2 to the internal flow path 42 of the secondary side via the secondary side separated by the valve portion.

Further, in order to shift from the connection open state to the non-connection closed state again, the release member 24 moving to the valve open position is closed against the pressing force of the pressing spring 27. It suffices to move the release member 24 to the valve closing position by moving the release member 24 to the valve closing position.
Is released, the female joint member 23 is automatically returned to the original state by the pressing force of the pressing spring 26 to perform the valve closing action. In the valve closed state, The male joint member 41 can be easily extracted from the female joint member 23.

Next, the fluid pressure purging mechanism portion 31 is slidably fitted on the cylindrical surface 1b of the pipe joint body 1 and is on the inner peripheral surface, and is in the connection valve open state. A cylindrical purging member 32 having a peripheral surface seal across each of the purge holes 9 and having a set of seal rings 33 at a position where the peripheral surface seal is released in the non-connection closed state. The outer end edge 32a corresponding to the outer end surface side of the tubular purge member 32 can be brought into contact with the inner end edge 24c of the release member 24 in the connection valve open state, and the inner end surface equivalent to the inner end surface side. After the inner edge 32b is guided by the erroneous operation prevention cam plate 15 interlocking with the valve operation handle 16 in the non-connection closed state, the inner edge 32b is brought into contact with the regulation cam surface 15b and held at the moving position. It is supposed to be done.

Therefore, in the case of the fluid pressure purging mechanism portion 31 having the above-described structure, the plug-in connection of the male joint member 41 to the female joint member 23 is not performed in the non-connection closed state shown in FIGS. Since the release member 24 is maintained at the valve closed position, the peripheral surface of each purge hole 9 is not sealed by each seal ring 33 of the tubular purge member 32, and the valve operation handle 16 is moved to the valve closed position. Therefore, it is not regulated by the regulation cam surface 15b of the erroneous operation prevention cam plate 15.

Further, in the connection open state shown in FIGS. 4 to 6, the male joint member 41 with respect to the female joint member 23.
When the valve operating handle 16 is actuated to the valve opening position, the tubular purge member 32 is guided to the erroneous operation prevention cam plate 15 and moved to the intended position. At the same time, the peripheral surface of each purge hole 9 is sealed by each seal ring 33 by being regulated by the regulation cam surface 15b, and at the same time, the release member 24 is moved and restrained to the valve opening position to prevent the erroneous operation. Become.

As described above, in the plug-in connection type pipe joint device with an on-off valve according to the configuration of the first embodiment, the plug-in connection of the male joint member 41 to the female joint member 23 of the pipe joint body 1 is performed. Then, the connection state of the male joint member 41 is maintained by the engagement restraint of the joint mechanism portion 21, and when the opening / closing valve mechanism portion 11 is operated to open in the connected state, the pipe joint body is The internal flow passage 2 in 1 and the secondary side internal flow passage 42 in the male joint member 41 are communicated with each other to shift to a valve open state, and are connected to the valve opening operation of the opening / closing valve mechanism portion 11 to connect the fluid. By performing the restraining operation of the pressure purging mechanism portion 31, the purging action in the secondary side internal flow passage is automatically closed, and at the same time, the connection state of the joint mechanism portion 21 is also restrained automatically. After that, the on-off valve mechanism unit 11 is closed. Unless operation, release of the connection state is disabled.

When the opening / closing valve mechanism 11 is closed while the valve is open, the internal flow passage 2 in the pipe joint body 1 and the secondary internal flow passage 42 in the male joint member 41 are closed. The interval is cut off to shift to the valve closed state, and the fluid pressure purge mechanism section 31 is released from the restraint in association with the valve closing operation, whereby the operation of the fluid pressure purge mechanism section 31, and eventually the The joint mechanism portion 21 can be operated together. As a result, when the joint mechanism portion 21 is released, at the same time, the fluid pressure purge mechanism portion 31 is also automatically operated, and the secondary side internal flow path is also activated. After the purging action in the inside is performed, the female joint member 23 to the male joint member 4
1 can be extracted very easily.

Second Embodiment Device FIGS. 7 and 8 show a plug-in connection type pipe joint device with an opening / closing valve to which a second embodiment of the present invention is applied.
FIG. 7 is an overall vertical cross-sectional view showing a schematic configuration in a valve closed state due to non-connection, and FIG. 8 is an overall vertical cross-sectional view showing a schematic configuration in a valve open state due to connection.

The device of the second embodiment has the same structure as that of the device of the first embodiment, but the on-off valve mechanism section 11 has a cock-type on-off valve, that is, in this case, a valve flow across the inside of the internal flow path 2. Since the cock-shaped valve member 18 with the passage 18a is used, the same or almost the same operational effect as that of the first embodiment device can be obtained.

Third Embodiment Device FIGS. 9 to 14 show a second basic plug-in connection type pipe joint device with an on-off valve to which the third embodiment of the present invention is applied. FIG. 10 is an overall vertical cross-sectional view showing a schematic configuration of a valve closed state by non-connection, FIG. 10 is a side view of the same as above, and FIG. 11 is a schematic plan view of an erroneous operation preventing cam plate portion.
FIG. 12 is an overall vertical cross-sectional view showing a schematic configuration of a valve open state associated with connection, FIG. 13 is a side view of the same as above, and FIG. 14 is a schematic plan view of an erroneous operation preventing cam plate portion.

The device of the third embodiment differs from the device of the first embodiment in that the fluid pressure purging mechanism section 31 is omitted and the on-off valve mechanism section 11 causes the male joint to operate when the valve is opened. The member 41 is designed to be restrained and restrained, and the same action and effect as the first embodiment device can be obtained except that the action and effect by the fluid pressure purging mechanism portion 31 cannot be obtained.

Fourth Embodiment Device FIGS. 15 and 16 show a plug-in connection type pipe joint device with an opening / closing valve to which a fourth embodiment of the present invention is applied. FIG. FIG. 15 is an overall vertical cross-sectional view showing a schematic configuration of a valve state, and FIG. 14 is an overall vertical cross-sectional view showing a schematic configuration of a valve open state associated with connection.

The device of the fourth embodiment is the same as the device of the first embodiment, but the on-off valve mechanism section 11 has a cock-type on-off valve, that is, in this case, a valve flow across the inside of the internal flow path 2. The cock-shaped valve member 18 with the passage 18a is used, the fluid pressure purging mechanism portion 31 is omitted, and the on-off valve mechanism portion 11 does not restrict the male joint member 41 when the valve is opened. In addition to the effects obtained by the fluid pressure purging mechanism section 31, the same or almost the same effects as the first embodiment device can be obtained.

Fifth Embodiment Device FIG. 17 and FIG. 18 show a plug-in connection type pipe joint device with an opening / closing valve to which a fifth embodiment of the present invention is applied. FIG. 16 is an overall vertical cross-sectional view showing a schematic configuration of a valve state, and FIG. 16 is an overall vertical cross-sectional view showing a schematic configuration of a valve open state associated with connection.

The device of the fifth embodiment is the same as that of the device of the first embodiment, except that the on-off valve mechanism section 11 has a butterfly type on-off valve, that is, in this case, a butterfly valve across the communication space 5. The body type member 19 is used, the fluid pressure purging mechanism portion 31 is omitted, and the on-off valve mechanism portion 11 causes the male joint member 4 to operate when the valve is opened.
The restriction of No. 1 is provided, and the same or substantially the same effect as that of the first embodiment device can be obtained except that the effect of the fluid pressure purging mechanism portion 31 cannot be obtained.

[0051]

As described above in detail with reference to the embodiments, according to the present invention, the external male joint member is plug-in connected to the female joint member provided in the internal passage of the pipe joint body. In the pipe joint device, an on-off valve mechanism portion having an on-off valve for opening and closing an internal flow path in the pipe joint body, and a cam means interlocking with opening and closing operation of the on-off valve, and a female joint member are provided. Of the male joint member, and a joint mechanism section having a releasing means for releasing the holding of the engaging means, the joint mechanism portion is incorporated, and, if necessary, the constitution. Incorporating a fluid pressure purging mechanism section having a purging means for purging the secondary side fluid pressure in the flow path into
The cam means that is operated in conjunction with each of the opening and closing operations of the opening / closing valve mechanism section locks and locks the releasing means in accordance with the valve opening operation at the time of the valve opening operation. When the purge is closed and the valve is closed, the release means is released in accordance with the valve closing operation and the purge means can be opened. Of each of the valve opening, closing, and connection holding and releasing of the connection of the male joint member to the female joint member by the joint mechanism section, and the purging of the secondary side fluid pressure by the fluid pressure purging mechanism section. Each action with purge opening is independent of each other,
In addition, it can be automatically performed in relation to each other. Moreover, in such an independent configuration, the individual structure of each of the mechanical parts can be simplified as a whole, and the operation itself is extremely easy. In particular, the connection force of the male joint member with respect to the female joint member of the joint mechanism is not required to operate and retain the connection, and the operation can be smoothly and quickly performed with a small operation force. It has features.

[Brief description of the drawings]

FIG. 1 is an overall longitudinal sectional view showing a schematic configuration of a first basic plug-in connection type pipe joint device with an on-off valve according to a first embodiment of the present invention in a non-connection closed valve state.

FIG. 2 is a side view showing a non-connection valve closed state in the first embodiment.

FIG. 3 is a schematic plan view of an erroneous operation preventing cam plate portion in a non-connection closed valve state in the first embodiment.

FIG. 4 is a vertical cross-sectional view showing a schematic configuration of a connection valve open state in the first embodiment.

FIG. 5 is a side view of the connection valve opening state in the first embodiment.

FIG. 6 is a schematic plan view of the erroneous operation preventing cam plate portion in the connection valve open state in the first embodiment.

FIG. 7 is an overall vertical cross-sectional view showing a schematic configuration of a plug-in connection type pipe joint device with an on-off valve according to a second embodiment of the present invention in a non-connection closed valve state.

FIG. 8 is an overall vertical cross-sectional view showing a schematic configuration of a connection valve opening state in the second embodiment.

FIG. 9 is an overall vertical cross-sectional view showing a schematic configuration of a second basic plug-in connection type pipe joint device with an on-off valve to which the third embodiment of the present invention is applied, in a non-connection closed valve state.

FIG. 10 is a side view showing a non-connection valve closed state in the third embodiment.

FIG. 11 is a schematic plan view of an erroneous operation preventing cam plate portion in the non-connection valve closed state in the third embodiment.

FIG. 12 is an overall vertical cross-sectional view showing a schematic configuration of a connection valve open state in the third embodiment.

FIG. 13 is a side view showing a connection valve opened state in the third embodiment.

FIG. 14 is a schematic plan view of the erroneous operation preventing cam plate portion in the connection valve open state in the first embodiment.

FIG. 15 is an overall vertical cross-sectional view showing a schematic configuration of a plug-in connection type pipe joint device with an on-off valve according to a fourth embodiment of the present invention in a non-connection closed valve state.

FIG. 16 is an overall vertical cross-sectional view showing a schematic configuration of a connection valve open state in a fourth embodiment of the same as above.

FIG. 17 is an overall vertical cross-sectional view showing a schematic configuration of a plug-in connection type pipe joint device with an on-off valve according to a fifth embodiment of the present invention in a non-connection closed valve state.

FIG. 18 is an overall vertical cross-sectional view showing a schematic configuration of a connection valve open state in a fifth embodiment of the same.

FIG. 19 is an overall vertical cross-sectional view showing a schematic configuration of a plug-in connection type pipe joint device with an on-off valve according to a conventional example, which is divided into a non-connection closed state and a connection open state.

[Explanation of symbols]

 1 Pipe Joint Main Body 1a Hexagonal Cylindrical Surface 1b Cylindrical Surface 2, 4 Internal Flow Path 3 Connection Pipe 5 Communication Space 6 Valve Shaft Hole 7 Step 8 Seal Ring 9 Purge Hole 11 Open / Close Valve Mechanism 12 Valve Seat Member 13 Ball Valve Member 13a Valve flow path 14 Valve shaft 14a Valve seal 15 Misoperation prevention cam plate 15a Guide cam surface 15b Control cam surface 16 Valve operation handle 16a Control projection 17 Lock nut 18 Cock-shaped valve body member 18a Valve flow path 19 Butterfly valve Body member 21 Joint mechanism part 22 Restraint members 22a, 22b Stop surface 22c Engagement hole 23 Female joint member 23a Restraint surface 23b Tapered surface 23c Extruded surface 24 Release member 24a Cam surface 24b Pressed surface 24c Inner edge 25 Engagement ball 26, 27 Pressing spring 31 Fluid pressure purging mechanism section 32 Cylindrical purging member 32a Outer edge 32b Inner edge 33 Sea Ring 41 male coupling member 41a outer peripheral surface 41b tapered surface 41c engaging groove 42 internal passage

Claims (2)

(57) [Claims] 1. A pipe joint device for plugging an external male joint member into a female joint member provided in an internal flow passage of the pipe joint body, wherein the internal flow is provided in the pipe joint body. An on-off valve mechanism section having an on-off valve for opening and closing a passage, and a cam means interlocking with the opening and closing operation of the on-off valve, and a member for holding the connection state of the male joint member to the female joint member. A coupling mechanism and a joint mechanism section having a release mechanism for releasing the holding of the engagement means, respectively, and are operated in association with each operation of opening and closing the opening / closing valve mechanism section. The cam means is configured to lock and release the release means according to the valve opening operation at the time of valve opening operation, and to release the restriction of the release means at the time of valve closing operation according to the valve closing operation. Plug-in connection type pipe with open / close valve characterized by Hand equipment. 2. A pipe joint device for plugging an external male joint member into a female joint member provided in an internal flow passage of the pipe joint body, wherein the internal flow is provided in the pipe joint body. An on-off valve mechanism section having an on-off valve for opening and closing a passage, and a cam means interlocking with the opening and closing operation of the on-off valve, and a member for holding the connection state of the male joint member to the female joint member. And a fluid pressure purging mechanism portion having a purging means for purging the secondary side fluid pressure in the flow path. By incorporating the cam means, which is operated in association with the opening and closing operations of the opening / closing valve mechanism, at the time of the valve opening operation, the locking and locking of the release means according to the valve opening operation, And purging of the purging means is closed, and at the time of valve closing operation, In accordance with the closing operation, the release restraint releasing means, and the on-off valve with plug-in connection type pipe coupling apparatus characterized by being configured to be made a purge opening of the purge means.