JP3096386B2 - Pipe fittings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multiple pipe joint which can connect a plurality of plugs and sockets at the same time, that is, a so-called multi coupler, and more particularly to a small-diameter type mainly used for air. A plurality of plugs and sockets can be simultaneously connected by lever operation.

[0002]

2. Description of the Related Art In order to improve the efficiency of pipe connection, various multiple pipe joints capable of simultaneously connecting a plurality of pipes by one connection operation have been developed. An example of such a multiple pipe joint (Japanese Utility Model Application Laid-Open No. 3-81490) will be described with reference to the drawings. FIG. 10 has a socket body for holding sockets for a large number of tube nipples and plugs for a large number of tube nipples. It is a sectional side view showing the state where a plug main part was separated. In the figure, 101 is a socket body, 113 is a plug body, the socket body 101 has a plurality of sockets 138 formed integrally with the tube nipple 116, and the plug body 113 has a tube nipple facing the socket. A plug 123 is provided.

[0003] To connect the socket body 101 and the plug body 113 in the illustrated state, the sleeve 104 is moved rearward (to the left in the figure) and a lock ball escape portion 106 formed at the front of the sleeve 104 is formed. Is positioned above the lock ball 103. As a result, rock ball 1
03 is allowed to escape in the centrifugal direction.
1 can be inserted into the plug body 113. The movement of the sleeve 104 causes the coil spring 10 to move.
9 is pressed by the coil spring engaging portion 111 of the sleeve 104 and moves in the annular groove 107 toward the shallowest portion,
With this movement, the coil spring 109 expands its radius and expands in the centrifugal direction.

[0004] In this state, the plug body 113 is inserted into the socket body 101 with the projection 121 on the socket body 101 side and the engaging groove 127 on the plug body 113 facing each other. When the formed lock ball engaging groove 114 and the lock ball 103 fitted in the tapered through hole 102 face each other, the sleeve 10
4 release the sleeve 104 moving backward.
Is released from the pressing force. At this time, the coil spring 1
09 moves toward the deepest part along the inclined surface 108 of the annular groove 7. Due to the movement of the coil spring 109, the sleeve 104 moves forward, the lock ball suppressing surface 105 on the inner peripheral surface of the sleeve 104 presses the lock ball 103 in the centripetal direction, and the lock ball 103 is inserted into the socket body 101. The lock ball engagement groove 114 of the main body 113 is completely engaged. And the socket body 1
01 and the plug main body 113 are connected, and at the same time, a plurality of tube nipples 1 provided in the socket main body 101 are connected.
The plugs 123 of the tube nipple provided in the plug main body 113 enter the 16 sockets 138, and the respective tube nipples are simultaneously connected.

As is apparent from the above description, according to this conventional example, by connecting the socket body 101 and the plug body 113 by operating the sleeve, the socket 138 of a plurality of tube nipples and the plurality of tube nipples opposed thereto are formed. Since the plug 123 and the plug 123 can be easily connected at the same time, the work efficiency is extremely high. Also, a connection mechanism using screws is adopted in place of the mechanism for connecting the socket body 101 and the plug body 113 with the sleeve,
One that simultaneously connects a plurality of tube nipple sockets and tube nipple plugs has also been proposed.

[0006]

However, although the above-mentioned pipe joint is excellent in that the sockets and plugs of a plurality of tube nipples are simultaneously connected, the pipe nipple is not provided with a valve. It was necessary to tighten the main plug in the flow path every time the connection and disconnection were performed. Even if a valve is provided on the socket of the tube nipple, if a fluid pressure (normally used compressed air pressure is about 6 to 10 kg / cm ² ) is applied to the inside of the socket, the connection is made manually by the action of the pressure. Work was difficult. In order to improve these points, in practice, the number of couplers is reduced, or a multi-coupler is used only for a low fluid pressure, but this is inconvenient because of lack of versatility. Further, in the case of a pipe joint using a screw, the operability of the attaching / detaching operation is poor, and it is difficult to automate the connection operation. And so on. In such a background, the present inventors have already provided a lock mechanism that is operated by a lever in a multiple-type pipe joint that can connect a plurality of plugs and sockets at the same time, a so-called multi-coupler. A multiple pipe joint has been proposed in which a large number of tube nipples can be simultaneously connected even when fluid pressure is applied to the socket side of the tube nipple by the action.

However, in the above lock mechanism, since the slidability of the cam mechanism provided in the lock mechanism is not sufficient, the operating load increases when internal pressure is applied to the coupler of the pipe joint, and the operability increases. There's a problem. Further, although the lock mechanism has a stopper for fixing the position of the operation lever at each operation position corresponding to the open / close state of the valve, the fixing force of the stopper is not sufficient, so that when an external force acts on the lever for operating the lock mechanism. The stopper cannot be easily removed or erroneous operation of the operation lever cannot be prevented. The points to be improved became clear. Therefore, the present invention employs a mechanism for improving the slidability of the cam mechanism provided in the lock mechanism, reduces the operation load to improve the operability of the lock mechanism, and sets the main driving member in the lock mechanism to each of the following. It is an object of the present invention to propose a novel pipe joint which can prevent an erroneous operation of an operation lever and a detachment of a stopper by providing a positioning mechanism of a driving member which can be firmly fixed at an operation position.

[0008]

For this reason, the technical solution adopted by the present invention comprises a substrate having a plurality of tube nipple sockets attached thereto, and a substrate having tube nipple plugs attached thereto corresponding to the plurality of sockets. A rotatable driving member having a main joint serving as a cam mechanism is rotatably provided on one of the substrates, and a driven member that moves in the axial direction while being in contact with the main joint is fitted to move the driven member. Depending on the state, the locking member and the engaging member provided on the other substrate are engaged to connect the substrates 1 and 1 ′, and further, in this state, the sockets of the plurality of tube nipples attached to the respective substrates In a pipe joint simultaneously connected to a plug of a tube nipple, a positioning mechanism for positioning the main driving member and a main joint and a driven member of the main driving member forming the cam mechanism. It is characterized in that a contact mechanism with the follower is provided with a sliding mechanism for improving the sliding of both.

[0009]

[Action]

[Unlocked state] In the unlocked state, the lever stopper 5a of the operation lever is located at the end 10d of the long hole 10a formed in the body cover 10, and the operation lever 5
Can be moved freely. At this time, the roller 8b of the driven member is in contact with the cam surface 4a of the driven member 4 by the action of the first spring 12 and the second spring 17. Locker 15
Can escape into an escape space 15a continuous with the inclined surface 8c formed in the driven member 8.
For this reason, when the engaging member 22 is inserted into the locking member holding cylinder 13, the locking element 15 is pushed into the escape space 15a,
The engaging member 22 can be freely inserted into and removed from the locking member holding cylinder 13, and the board 1 and the board 1 'can be freely connected and separated. In this state, the socket and the plug are not completely connected, and the valve in the socket is still closed.

[First Locked State] In the first locked state in which the operating lever 5 is at the position B, the lever stopper 5a of the operating lever 5 has a large diameter portion 10b formed on the body cover 10.
And the roller 8b of the driven member 8 rides on the cam surface 4b of the driving member 4. In this state, the driven member 8 moves by a distance of 4b from the cam surface 4a against the urging force of the second spring 17, and the inclined surface 8c formed on the driven member 8 presses the lock 15 in the centripetal direction. As a result, the locking element 15 is locked in the engaging groove 23 of the engaging portion 22 so that the board 1 and the board 1 ′ are connected to each other, and at the same time, they cannot be separated. In the first locked state, although the plug 3 is inserted into the socket 2, the valve body 2b is not yet pushed by the tip of the plug body 3a, and the valve hole 2c in the socket 2 is closed. I have.

[Second Locked State] In the second locked state in which the operating lever 5 is at the C position, the operating lever 5 is further rotated from the B position to the C position, and the lever stopper 5a of the operating lever 5 is attached to the body cover. 10, the roller 8b of the driven member 8 rides on the cam surface 4c of the driving member 4. In this state, the driven member 8 moves while contracting the second spring 17 by the distance between the cam surface 4b and the cam surface 4c of the driving member 4, and at the same time, the locking member holding cylinder 13 also moves the inclined surface of the driven member 8. With the lock 15 pushed in the centripetal direction by 8c, the lock member 15 moves to the right in the drawing, and the engagement member 22 also moves. Due to the movement of the engagement member 22, the substrate 1 'also moves, whereby the substrates 1 and 1' are completely connected. In the second locked state, the plug 3 is completely inserted into the socket 2, the valve in the socket is opened, and the tube nipples of the substrates 1, 1 'are completely connected.

[0012]

Embodiments of the present invention will be described below. The pipe joint includes a plurality of tube nipple sockets on one of two opposing substrates, and a plurality of tube nipple plugs opposing the socket on the other substrate.
By operating a lock mechanism provided at the center of each substrate when connecting these sockets and plugs, a plurality of sockets and plugs provided on both substrates can be simultaneously connected. FIG. 1 is a front view of a multiple pipe joint as one embodiment of the above configuration according to the present invention, and FIG. 2 is a cross-sectional view (cross-sectional view of a socket and a plug) of FIG. 3 is a sectional view taken along the line YY in FIG. 1 (a sectional view of the lock mechanism).

1 and 2, reference numeral 1 denotes one substrate, on which a plurality of tube nipple sockets 2 (eight sockets are shown in the drawings) are mounted. Further, the same number of tube nipple plugs 3 as the sockets 2 are attached to the substrate 1 'corresponding to the substrate 1 at positions corresponding to the sockets 2 of the tube nipple as shown in FIG. Apart from this, the substrate 1,
A lock mechanism R (described later) that locks the connection between the socket and the plug is provided at the center of 1 'as shown in FIGS. Hereinafter, the structure and function of the socket and plug constituting the present invention and the structure and function of the lock mechanism will be sequentially described in detail.

[Structure of Socket 2] FIG. 2 In FIG. The socket body 2a and the tube nipple 2a 'constituting the socket 2 are connected by screws 2e, and both are formed by an outer peripheral step 2f formed on the socket body 2a and a stop ring 2g locked on the outer circumference of the tube nipple 2a. It is fixed to the substrate 1. A valve 2b is disposed in the socket body 2a, and the valve 2b has a valve hole 2c.
And a spring 2h for urging the valve body 2d to the left in the figure. The valve body 2d is slidably mounted in the socket body 2a in the axial direction. The valve body 2d is normally urged leftward by a spring 2h in the figure, and the valve hole 2c is formed by the inner peripheral surface of the socket body 2a. Is closed, and a plug described later is inserted into the socket, and the valve element 2d is closed.
Is pushed to the right in the drawing against the urging force of the spring 2h to open the valve hole 2c so that the flow paths communicate with each other. In the drawings, 2j and 2k are O-rings, and 2m is a seal member.

[Structure of Plug 3] FIG. 2 A plug body 3a of a tube nipple is fixed to a substrate 1 'facing the substrate 1 by a stop ring 3b. The socket 2 and the plug 3 are separated from each other by a completely separated position where the lock mechanism R takes an unlocked state described later and a position where the lock mechanism R takes a first locked state (at this time, the valve is closed. The lock mechanism R is in the second position.
Locked position (valve opens at this time)
3 positions can be taken.

[Lock Mechanism R] FIGS. 1, 3 to 5 The lock mechanism R is in an unlocked state (the substrate 1 and the substrate 1 ') when the operation lever takes the positions A, B, and C shown in FIG.
Can be connected and separated), a first locked state (a state in which the substrate 1 and the substrate 1 ′ are connected and cannot be separated and the valve is closed), and a second locked state (the substrate 1 ′ is connected to the substrate 1).
Is connected and the valve is close and the valve is open)
Can be taken. At this time, in order to maintain the first locked state and the second locked state, the locking mechanism is provided with a positioning mechanism for positioning a driving member (described later). On the other hand, according to this locked state, the socket and plug of the tube nipple can be in three positions: a disconnected state, a connected but valve closed state, and a valve open state, as described in FIG. That is, by operating the operating lever of the lock mechanism in this multiple pipe joint, a large number of tube nipple sockets and plugs can be simultaneously attached and detached at a time.

As shown in FIG. 3, the lock mechanism R includes a driving member (cam ring) 4 provided on the substrate 1, a driven member (roller holder) 8 which is moved in the axial direction by the driving member, and a locking member holding cylinder ( A ball holder 13, a lock 15 as a lock member, and an engaging member 22 (guide shaft) provided separately from the lock 1 on the substrate 1 ′ and engaged with the lock 15.

A. Positioning Mechanism of Main Drive Member in Lock Mechanism In FIG. 3, the main drive member 4 has a cylindrical shape, and the main drive member 4 is rotatably attached to the substrate 1 by an appropriate means such as a bearing. An operating lever 5 is fixed to the main driving member 4 (fixed with a screw in the figure), and a lever stopper 5a is slidably fitted around the outer periphery of the operating lever 5, and is moved by a spring 5b. It is biased in the middle and lower direction.

A body cover 10 is provided around the driving member 4.
Are mounted on the substrate 1 by fixing means (such as screws) as appropriate. As shown in FIG. 4, the body cover 10 is formed with an elongated hole 10a having a width slightly larger than the shaft diameter of the operation lever 5 and smaller than the outer diameter of the lever stopper 5a. Hole 10a
Are formed with two large diameter portions 10b and 10c to which the lever stopper 5a can be fitted. The shaft portion of the operation lever 5 is fixed to the driving member 4 through the elongated hole 10a, but the lever stopper 5a is normally pressed on the body cover 10 by a spring 5b.

When the operation lever 5 is at the position A (unlocked state) in FIG. 1, the operation lever is located at the end 10d of the long hole 10a,
When it comes to the position (first locked state), the lever stopper 5a
Is fitted to the large-diameter portion 10b by the urging force of the spring 5b, and comes to the position C (the second locked state), the lever stopper 5a is fitted to the large-diameter portion 10c.
In this manner, the positions of A, B, and C of the operation lever 5 shown in FIG. 1, that is, the positioning of the driving member can be determined by the relationship between the elongated hole 10a and the lever stopper 5a. The release from the position B (first locked state) and the position C (second locked state) can be released by operating the operating lever 5 by pulling up the lever stopper 5a against the urging force of the spring 5b.

B. Cam mechanism in the lock mechanism In FIG. 3, the lock mechanism comprises a driving member and the driving member 4.
And a driven member 8 slidably fitted to the inner periphery of the driven member. The driving mechanism and the driven member 8 slidably fitted on the inner periphery of the driving member 4 constitute a cam mechanism. In the cam mechanism, the driven member 8 moves in the axial direction by the operation of the main driving member 4, and regulates the lock 15 in a manner described later. 5 and 6 show a side view and a sectional view of the driving member 4 and the driven member 8, respectively. 5, one end side of the main driving member 4 is provided with a driven member 8 described later and one of cam surfaces 4a, 4b, and 4c (main joints) constituting a cam mechanism in FIG.
The cam surface moves the driven member 8 in the axial direction by three positions corresponding to the positions A, B, and C of the operation lever.

In FIG. 6, the driven member 8 is formed in a cylindrical shape, and a shaft 8a is mounted at one end of the driven member 8 corresponding to the cam surface side of the main driving member 4 at a symmetrical position. The roller 8b (follower) is rotatably attached to the roller 8b. On the other hand, on the other end side of the driven member 8,
An inclined surface 8c that acts to push a lock 15 as a locking member in a centripetal direction is formed. Further, a spring seat 8d composed of a retaining ring and a collar is formed on the inner peripheral surface of the driven member 8.

Referring again to FIG. 3, the locking member holding cylinder 13 is provided in the inner hole of the driven member 8 via a projection 13a formed integrally with the locking member holding cylinder 13 so as to be slidable in the axial direction. A plurality of circumferentially tapered through holes 14 are formed in the locking member holding cylinder 13, and a locking element 15 as a locking member is loosely fitted in the through holes 14. With the lock mechanism R assembled, the locking member holding cylinder 13
The first spring 12 is disposed between the projection 13a formed on the outer periphery of the body and the spring seat 8d formed on the inner peripheral surface of the driven member 8, and between the spring seat 8d and the body cover 10. The second spring 17 is arranged. Further, the protrusion 13
a and the inner peripheral surface of the driven member 8 and the inclined surface 8c form an escape space 15a for the lock element 15.

When the lock mechanism is assembled, the roller 8b and the cam surface of the driving member 4 are in contact with each other by the urging force of the second spring 17, as shown in FIG. This constitutes a cam mechanism. In the drawing, 18 is a snap ring, 19 is a substrate 1,
1 ′ positioning member, 20 is positioning member 19 for substrate 1
And 21 are screws for fixing the body cover 10 to the substrate 1. The positioning member 19 fits into a hole 19 a formed on the substrate 1 ′ side to position the substrates 1 and 1 ′. Is performed.

C. Engaging member of lock mechanism In FIG.
2a and 22b. This engaging member 2
An engagement groove 23 that engages with the lock 15 is formed on the outer periphery of the second predetermined position. When the locking element 15 provided in the locking member holding cylinder 13 and the engagement groove 23 of the engagement member 22 are engaged, the substrates 1 and 1 'are connected.

The operation of the lock mechanism R having the above configuration will be described with reference to FIGS. [Lock release state] FIG.
It shows a cross-sectional view of an unlocked state (disconnected state) at the position A in the middle and a diagram showing the relationship between the driven member and the driven member at this time. In this state, the lever stopper 5a of the operation lever is located at the end 10d of the elongated hole 10a formed in the body cover 10, and the operation lever 5 can move freely. The driven member is the first spring 1
2, the neutral position is set by the second spring 17, and the roller 8b of the driven member is in contact with the cam surface 4a formed on the main driving member 4. Further, the locking element 15 can escape into an escape space 15a which is continuous with the inclined surface 8c formed in the driven member 8. Therefore, FIG.
In this state, when the engaging member 22 provided on the substrate 1 ′ is inserted into the locking member holding cylinder 13, the engaging member 22 pushes the locking element 15 into the escape space 15 a, so that the engaging member 22 is 13 can be freely taken in and out. As a result, the substrate 1 and the substrate 1 ′ can be connected and separated. At this time, the socket and the plug have not yet been completely connected, and the valve in the socket is still closed.

[First Locked State] FIG.
Sectional view of the first locked state (valve closed state) in which the engaging member 22 provided on the substrate 1 'is inserted into the locking member holding cylinder 13 provided at 3 shows a relationship diagram between the main driving member and the driven member. In the first locked state, the operation lever 5 is rotated from the position A to the position B, and the lever stopper 5 of the operation lever 5 is rotated.
a is fitted in the large diameter portion 10b formed in the body cover 10, and the operation lever 5, that is, the driving member is fixed at the position B. At the same time, the driving member 4 is also rotated by the same angle, and as a result, the roller 8b of the driving member 8 rides on the cam surface 4b of the driving member 4. In this state, as shown in FIG. 8A, the driven member 8 is moved rightward in the figure by a distance of 4b from the cam surface 4a against the urging force of the second spring 17, as shown in FIG. Member 8
The inclined surface 8c formed on the lock presses the lock 15 in the centripetal direction. Therefore, the locking element 15 is locked in the engaging groove 23 of the engaging portion 22 so that the board 1 and the board 1 ′ are connected and are inseparable at the same time.

When the operating lever 5 is in the first locked state while the board 1 and the board 1 'are completely separated from each other, the engaging member 22 of the board 1' is moved into the locking member holding cylinder 13. , The lock 15 and the engaging member 22 are connected as follows. That is, when the engaging member 22 is inserted into the locking member holding cylinder 13, the distal end of the engaging member 22 pushes the lock 15 outward. At this time, the locking member holding cylinder 13 is pushed by the first spring 1 by the pushing action of the locking element 15.
It is pushed rightward in the figure against the biasing force of 2. Then, the lock 15 is pushed into the escape space 15a,
The locking element 15 does not hinder the approach of the engaging member 22. Thereafter, when the engaging member 22 is further pushed in and the engaging groove 23 enters the position of the locking element 15, the locking element 15 falls into the groove 23 and the locking member holding cylinder 1
3, the locking member holding cylinder 13 moves leftward in the drawing by the urging force of the first spring 12, and with this movement, the locking element 15 is pushed in the centripetal direction by the action of the inclined surface 8c. The engagement member 22 and the lock 15 are engaged, and the board 1 and the board 1 'are connected. Thus, the operation lever 5
Can be connected to the board 1 and the board 1 'even if the board is fixed in the first locked state as shown in FIG.

When the operating lever 5 is in the first locked state, the socket and the plug of the tube nipple attached to each substrate 1, 1 'are in the first locked state shown in FIG. In this state, although the plug 3 has been inserted into the socket 2, the valve body 2b has not yet been pushed by the tip of the plug body 3a, and the valve hole 2c in the socket 2 has been closed. For this reason, even in the state of FIG. 8, the fluid is not released because the valve body 2b closes the flow path.

[Second Locked State] FIG. 9A shows the substrate 1
Sectional view of the second lock state (valve open state) in which the engaging member 22 provided on the substrate 1 'is completely inserted into the locking member holding cylinder 13 provided on the 3 shows a relationship diagram between the main driving member and the driven member.
In the second locked state, the operation lever 5 is moved from the B position to the C position.
The lever stopper 5a of the operation lever 5 is further rotated to the position shown in FIG.
The operation lever 5, that is, the driving member, is fixed at the C position. At the same time, the driving member 4 is also rotating by the same angle. As a result, the cam surface 4c of the driving member 4
Is in a state where the roller 8b of the driven member 8 rides on.

In this state, as shown in FIG. 9 from the state of FIG. 8, the driven member 8 contracts the second spring 17 by the distance between the cam surface 4b and the cam surface 4c of the main driving member 4 while rightward in the figure. Move towards At the same time, the locking member holding cylinder 13 also moves rightward in the figure together with the locking element 15 pushed in the centripetal direction by the inclined surface 8 c of the driven member 8, and further engages with the engaging element 22 engaged with the engaging element 15. Also moves to the right in the figure. Due to the movement of the engagement member 22, the substrate 1 'also moves, whereby the substrates 1 and 1' are completely connected. In addition,
In the second locked state, the plug 3 is completely inserted into the socket 2, the valve in the socket is opened, and the tube nipples of the substrates 1, 1 'are completely connected. When the operating lever 5 is in the C position, that is, the second locked state, while the board 1 and the board 1 ′ are completely separated, the engaging member 22 of the board 1 ′
When the lock member 15 is inserted into the lock member holding cylinder 13, the lock element 15 and the engagement member 22 are engaged in the same manner as in the first locked state, and the socket and the plug can be connected with one touch.

[Release of Locked State] In order to release the state in which the substrate 1 and the substrate 1 'are connected (when the operation lever is at the B position or the C position), the lever stopper 5a is moved by the spring 5b.
When the operating lever 5 is moved up to the position A by pulling up against the urging force, the lock mechanism is returned to the initial state by the cam mechanism, so that the engaging element 15 can be fitted into the escape space 15a, and the two can be easily connected. Can be separated. After separation, the valve in the socket automatically closes the valve hole,
No fluid flows out of the socket.

When the operating lever 5 is operated as described above,
The lock mechanism can take an unlocked state, a first locked state, and a second locked state, and can position and fix the operation lever according to each state, and is provided on the substrates 1, 1 'for the first time in the second locked state. The valves in the sockets of a plurality of tube nipples can be opened simultaneously.
As described above, the valve provided in the socket 2 of the tube nipple does not open until the substrates 1 and 1 'are completely connected, so that it is possible to avoid a situation where the connection work becomes difficult due to the pressure of the fluid at the time of connection. Further, when the operation lever 5 takes the B position and the C position, the lever stopper 5a is fitted to the large diameter portion 10b or the large diameter portion 10c. The positioning position can be fixed to prevent the operation lever 5 from malfunctioning and the stopper from coming off unexpectedly.

As described above, in the pipe joint according to the present invention, the socket 2 of the tube nipple and the plug of the tube nipple provided on the substrates 1, 1 'depend on the position of the cam surface of the driving member 4 constituting the lock mechanism. Since it is possible to control the connection state with the connection 3, it is not necessary to perform an operation of closing the main plug of the pipe every time the connection is disconnected. Therefore, an efficient pipe connection operation can be performed. In addition, since slip means (rollers, needle bearings, ball bearings, etc.) are provided between the main driving member 4 and the driven member 8 constituting the cam mechanism to improve the sliding between the driving member 4 and the driven member 8, the operation load is reduced and the locking is performed. The operability of the mechanism can be improved. In addition, the lock mechanism is equipped with a positioning mechanism that can firmly fix the driving member at each operation position, so that the operation lever can be firmly fixed at each operation position, so that when an external force acts on the operation lever, the stopper can easily come off Inconveniences, such as being lost or erroneous operation of the lever, can be eliminated.

Each member constituting the present invention can be made of various materials such as metal and synthetic resin, and the contact portion between the main driving member 4 and the driven member is excellent in lubrication such as Teflon. A material may be used. Furthermore, the present invention may be embodied in various other forms without departing from its spirit or essential characteristics. Also, the mounting of the locking member and the engaging member is reversed from that of the present embodiment, and the engaging member is attached to the substrate 1 and the substrate 1 ′.
A locking member may be arranged on the second member. Moreover, the above-described embodiments are merely illustrative in every respect and should not be construed as limiting.

[0036]

As described in detail above, according to the present invention,
The lock mechanism control operated by the driving member is adopted, so each time connection and disconnection are performed, the connection work is facilitated with the fluid pressure applied to the socket without closing the main plug of the pipe, and the safety that the connection state can be maintained Can be improved.
Further, since the connection between the socket and the plug can be performed regardless of the position of the operation lever, automation can be achieved. Further, since a mechanism that improves the slidability of the cam mechanism provided in the lock mechanism is employed, the operation load can be reduced, and the operability of the lock mechanism can be improved. Furthermore, since the main mechanism is provided with a positioning mechanism for the main driving member that can firmly fix the lock mechanism at each operation position, erroneous operation of the lever and removal of the stopper can be prevented. It has excellent effects.

[Brief description of the drawings]

FIG. 1 is a front view of a pipe joint according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX in FIG.

FIG. 3 is a sectional view taken along line YY in FIG.

FIG. 4 is an elevational view, a front view, and a side sectional view of a body cover constituting the lock mechanism.

FIG. 5 is a sectional view and a side view of a driving member.

FIG. 6 is a sectional view and a side view of a driven member.

FIG. 7A is a cross-sectional view of the lock mechanism of the pipe joint in an unlocked state, and FIG. 7B is a relationship diagram between a main driving member and a driven member.

FIG. 8A is a cross-sectional view of the lock mechanism of the pipe joint in a first locked state, and FIG. 8B is a relationship diagram between a main driving member and a driven member.

9A is a cross-sectional view of the lock mechanism of the pipe joint in a second locked state, and FIG. 9B is a relationship diagram between the main driving member and the driven member.

FIG. 10 is a side sectional view of a conventional multiple pipe joint.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1 'board 2 socket 3 plug 4 main moving member 4a, 4b, 4c cam surface 5 operating lever 8 driven member 8c inclined surface 13 locking member holding cylinder 15 locking member (locking element) 22 engaging member 23 engaging groove

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F16L 39/00-39/04 F16L 37/00-37/28

Claims (3)

(57) [Claims] The pipe joint includes a board having a plurality of sockets attached thereto, and a board having plugs corresponding to the plurality of sockets attached thereto, and a driving member having a driving mechanism serving as a cam mechanism on one of the substrates. A driven member that is rotatably provided and moves in the axial direction while being in contact with the main joint is fitted, and the locking member and the engaging member provided on the other substrate are engaged depending on the moving state of the driven member. In this state, the two substrates are connected, and furthermore, in this state, a plurality of sockets and plugs attached to the respective substrates are configured to be simultaneously connected, and the driving member is fixed at a position corresponding to the cam mechanism. A pipe joint characterized by comprising a positioning mechanism. 2. A pipe joint comprising: a board having a plurality of sockets attached thereto; and a board having a plug attached thereto corresponding to the plurality of sockets, and a driving member having a driving mechanism serving as a cam mechanism on one of the substrates. A driven member that is rotatably provided and moves in the axial direction while being in contact with the main joint is fitted, and the locking member and the engaging member provided on the other substrate are engaged depending on the moving state of the driven member. In this state, the two boards are connected together, and in this state, a plurality of sockets and plugs attached to the respective boards are configured to be simultaneously connected, and the main drive member and the driven member of the drive member forming the cam mechanism are connected. A pipe joint characterized by comprising a sliding mechanism at a contact portion with a follower to improve sliding between the driven joint and the driven joint. 3. A pipe joint comprising: a board having a plurality of sockets attached thereto; and a board having a plug corresponding to the plurality of sockets attached thereto. A driving member having a driving mechanism serving as a cam mechanism is provided on one of the substrates. A driven member that is rotatably provided and moves in the axial direction while being in contact with the main joint is fitted, and the locking member and the engaging member provided on the other substrate are engaged depending on the moving state of the driven member. In this state, a plurality of sockets and plugs attached to the respective substrates are connected at the same time, and the driving member is fixed at a position corresponding to the cam mechanism. A pipe joint comprising: a positioning mechanism to be used; and a sliding mechanism for improving sliding between a main moving member of the main driving member and a driven member of the driven member, which form the cam mechanism.