JP4607449B2 - Joint with valve and joint device - Google Patents

Description

  The present invention relates to a joint with a valve used for connecting a hydraulic pipe to various hydraulic devices and connecting / disconnecting the pipes to each other and a joint device including the joint with the valve.

  Conventionally, what was described in patent document 1, for example as a joint apparatus as mentioned above is known.

  The joint device includes a first joint suspended downward and a second joint provided upward at a position below the first joint. The first joint is provided with a valve that can be switched between a valve closing position for closing the internal flow path of the first joint and a valve opening position for opening the internal flow path.

In a state where both joints are separated, the valve of the first joint is held in the closed position by a spring or the like, while the second joint is lifted by a hydraulic cylinder or the like, so that the second joint is The valve abuts against the valve of one joint to open the valve against the spring force of the spring, and both joints are connected.
Japanese Patent Laid-Open No. 10-238680 (pages 3 to 5, FIG. 1)

  However, in the conventional joint device, in order to connect and disconnect the joints and to open / close the valve, one joint (second joint) must be moved up and down by a hydraulic cylinder or the like, which requires a large driving force. In addition, a complicated guide mechanism including a guide pin or the like is required to accurately guide the second joint to the connection position with the first joint.

  Therefore, the conventional joint device has a problem that the entire device is generally complicated and enlarged.

  Even if the first joint and the second joint of the conventional joint device are provided to face each other in the horizontal direction, the same is true as long as the entire second joint has to be moved horizontally by a hydraulic cylinder or the like. Problems can occur.

  This invention is made | formed in view of the said situation, and makes it the technical subject which should be solved to enable it to perform connection and disconnection of joints, without requiring a large-scale installation.

A joint with a valve of the present invention that solves the above problems is an internal flow path, a valve mechanism that can be switched between a state of closing the internal flow path and a state of connecting the internal flow path to an opening provided in a counterpart joint. A valved joint used for connection to a hydraulic pipe having a shaft hole that extends at least in the joint axial direction and forms at least a part of the internal flow path, and the shaft hole is an opening of the counterpart joint. And a joint body provided in a state where the shaft hole is fixed at a position separated from the opening of the counterpart joint, and is slidably disposed in the shaft hole of the joint body, A central hole, a seat portion, and a seal end face that form a part of the internal flow path, and the seal end face abuts on the periphery of the opening of the counterpart joint and closes the periphery of the opening while the opening and the center The connection position where the hole can communicate with the seal end face is A slide bush supported by the joint body so as to be able to move forward and backward between a separated position separated from the joint body, and interposed between the joint body and the slide bush so that the slide bush is connected to the connection position side. An urging means for urging the valve, and a valve portion that is inserted into the shaft hole and the center hole and that can be seated on the seat portion, and the valve portion passes through the opening and passes through the opening. A valve body member supported by the joint body so as to be able to move forward and backward between a forward position entering the joint and a retracted position where the valve portion retracts from the counterpart joint, By retreating to the retracted position, the valve portion of the valve body member is seated on the seat portion of the slide bush to block the internal flow path, and the slide bush is resisted against the urging force of the urging means. Retreat to position When the valve body member moves forward to the advance position, the valve portion of the valve body member separates from the seat portion of the slide bush to connect the internal flow path to the opening and attach the slide bush to the attachment portion. The urging force of the urging means is configured to advance to the connection position.

Moreover, the joint device of the present invention that solves the above-mentioned problem is a joint device that includes the valved joint and the counterpart joint having a counterpart internal passage that communicates with the opening, and the counterpart joint includes the opening and the joint. A mating joint body having a mating shaft hole that communicates with the opening and extends at least in the joint axial direction to form at least a part of the mating internal flow path; and the opening of the mating joint and the shaft of the joint body When the valve body member advances to the advance position in a state where the joint body is fixed at a position opposed to and spaced from the hole, the slide bush is moved to the connection position by the urging force of the urging means. And the valve part separated from the seat part of the slide bush passes through the opening and enters the counterpart joint, whereby the counterpart internal flow path and the valve attached An internal flow passage of the joint is characterized in that it is configured to be communicated.

In the above configuration, when the valve body member of the valve joint is retracted to the retracted position, the valve portion of the valve body member is seated on the seat portion of the slide bush to block the internal flow path of the valve joint and the slide In order to retract the bush against the urging force of the urging means to the separated position, the joints are thereby disconnected and the valved joint is closed. On the other hand, when the valve body member of the joint with valve is advanced to the advance position, the slide bush is advanced to the connection position by the urging force of the urging means, and the valve portion is separated from the seat portion of the slide bush. to order, thereby the both joint is connected to a fluid with valved fitting is opened thereby enabling distribution.

  In this way, since it is possible to simultaneously connect and disconnect the joints and open and close the valved joints only by moving forward and backward only the valve body member of the valved joints, Thus, the required driving force is greatly reduced compared to a device that must move the entire joint, and the joint can be connected and disconnected with simple equipment. For this reason, the occurrence of a failure or the like can be suppressed, and fluid leakage or the like can be suppressed in the connected state of the joint to improve reliability.

  Further, it is possible to connect and disconnect the joints only by providing drive means for moving the valve body member forward and backward between the forward position and the backward position. Further, when the force required for operating the valve body member is relatively small, manual switching is possible.

  Here, in the joint with a valve, the valve body member has a piston portion at a proximal end side rearward of the valve portion, and the joint body stores the piston portion, and the piston portion and the front chamber are accommodated. It is preferable to have a cylinder chamber partitioned into a rear chamber, and an assist channel for guiding the fluid pressure supplied to the internal channel to the rear chamber of the cylinder chamber. According to this aspect, the drive of the valve body member to the advance position can be assisted using the fluid pressure supplied to the internal flow path of the valved joint, and the required driving force can be reduced accordingly. Is possible. In particular, when fluid flows into the valved joint from the counterpart joint, even when the fluid pressure is high, that is, when the force to retract the valve body member is large, a relatively small drive is required. It can be countered by force, and the valve body member can be held in the advanced position.

  Further, in the joint device, the counterpart joint is inserted into the counterpart shaft hole of the counterpart joint body, and retracts from the valve closing position for closing the opening and the valve closing position to the inside of the counterpart shaft hole. A counterpart valve member supported by the counterpart joint body so as to be able to move forward and backward with respect to the valve opening position where the opening is opened, and a counterpart biasing means for biasing the counterpart valve member toward the valve closing position. The valve body member of the joint with valve is advanced to the advance position so that the valve body member pushes the counterpart valve member to the open position against the urging force of the counterpart urging means. It is preferable that it is comprised. According to this aspect, when the joints are separated from each other, even in the counterpart joint, it is possible to prevent the fluid leakage from the opening by closing the opening with its own valve mechanism. Further, the opening / closing operation of the valve mechanism of the counterpart joint can be easily performed by a single operation using the advance / retreat of the valve body member.

  Furthermore, in a preferred aspect, the joint device is configured such that one of the joint with valve and the counterpart joint is a fluid supply means for supplying fluid to a receiving facility and a first pipe comprising a plurality of first pipes. A plurality of groups are arranged on the supply equipment side having a group and are connected to the first pipes, respectively, while the other of the joint with valve and the counterpart joint is provided on the supply equipment side. A plurality of second pipe groups comprising a plurality of second pipes provided on the receiving equipment side and arranged on the receiving equipment side so that the joints can be connected to each other correspondingly. Each is connected to two pipes. According to this aspect, connection and disconnection operations can be performed for each paired valve joint and counterpart joint. For this reason, it is possible to control whether or not the fluid is supplied to each pipe. Further, for example, by moving a movable plate having a plurality of valve joints with respect to a fixed plate having a plurality of counterpart joints, a plurality of valve joints and a counterpart joint can be connected and disconnected in a lump. Compared with the case where it is performed, the required driving force is greatly reduced, and the coupling can be connected and disconnected with extremely simple equipment.

  As described above, the present invention enables the slide bush provided on the joint main body to move forward and backward between a connection position where the slide bush is connected to the counterpart joint and a separated position which is separated from the counterpart joint. The valve body member inserted through the center hole of the slide bush is retracted, thereby seating the valve portion of the valve body member on the seat portion of the slide bush and closing the internal flow path. The slide bush is retracted to the separation position against the biasing force of the biasing means, while the valve body member is advanced to advance and advance the slide bush to the connection position by the biasing force. Since the valve part is separated from the part, it is easy to operate the valve body member without moving the entire joint. Configuration it is possible to perform the connection and disconnection of the joint between at.

  Embodiments according to the present invention will be specifically described below with reference to the drawings.

(Embodiment 1)
1 to 3 show a joint device for hydraulic piping provided with a first joint J1 corresponding to a joint with valve according to the present invention and a second joint J2 which is a counterpart joint thereof. (A) shows the state where the joints are cut off, and FIGS. 2 and 3 (b) show the state where the joints are connected.

  First, the second joint J2 will be described. The second joint J2 includes a second joint body (mating joint body) 10 composed of a second internal flow path forming block 12 and a back wall block 14. The second internal flow path forming block 12 includes a through hole (mating shaft hole) 12a penetrating the block 12 along its central axis (joint axis), and a pipe connection port 12b connected to an intermediate portion of the through hole 12a. And an opening 12c at the front end (right end in FIGS. 1 and 2) of the through hole 12a. The back wall block 14 is fixed to the rear end surface of the inner forming block 12 so as to close the opening at the rear end of the through hole 12a. Accordingly, the second joint body 10 is formed with a second internal flow path (a counterpart internal flow path) extending from the pipe connection port 12b to the opening 12c via the through hole 12a.

  A second valve shaft 16 corresponding to the counterpart valve member according to the present invention is loaded in the through hole 12a. The second valve shaft 16 has a large-diameter second valve portion 16a on the front end side and a supported shaft portion 16b on the rear end side. Then, in a state where the entire second valve shaft 16 is located on the central axis of the through hole 12a, the joint body 10 side is provided via the bearing 18 so that the supported shaft portion 16b can advance and retract in the axial direction. It is supported by. By this advance and retreat in the axial direction, the second valve shaft 16 has the outer peripheral surface of the second valve portion 16a abutted against and seated on the inner peripheral edge portion (second seat portion) of the opening 12c of the through hole 12a. The valve closing position for closing 12c and the valve opening position for opening the opening 12c by moving the second valve portion 16a away from the inner peripheral edge of the opening 12c and retreating to the inside of the through hole 12a of the second joint body 12 It is possible.

  Further, a second compression coil spring (counter biasing means) 17 is interposed between the second valve portion 16 a and the bearing 18, and the second valve shaft is caused by the elastic force of the second compression coil spring 17. 16 is urged toward the valve closing position. That is, the state in which the second valve portion 16a is seated in contact with the inner peripheral edge of the opening 12c by the elastic force of the second compression coil spring 17 is maintained.

  An escape recess 14a is formed at the center of the front side surface of the back wall block 14 to avoid interference with the supported shaft portion 16b of the second valve shaft 16 retracted to the valve opening position.

  On the other hand, the first joint body 20 of the first joint J1 includes a first internal flow path forming block 22 and a cylinder block 24.

  The first internal flow path forming block 22 has a through hole (shaft hole) 22a penetrating the block 22 in the joint axial direction, and a pipe connection port 22b connected to an intermediate portion of the through hole 22a. Then, as shown in FIG. 1, the first joint body 20 is located at a position where the opening 12c of the through hole 12a and the through hole 22a face the second joint J2 and the two joints are close to each other. Fixed.

  The cylinder block 24 has a fitting portion 24a having an outer diameter that can be fitted into the through hole 22a from the rear end side (right side in FIGS. 1 and 2) of the through hole 22a. And both the blocks 22 and 24 are connected and fixed in the state which inserted the insertion part 24a in the said through-hole 22a, and the rear-end opening of the said through-hole 22a is block | closed. Accordingly, in the first internal flow path forming block 22 of the first joint body 20, a first internal flow path is constituted by the through hole 22a, the pipe connection port 22b, and a center hole of a slide bush 26 described later.

  A slide bush 26 is loaded in the front portion of the through hole 22a so as to be movable along the axial direction. This slide bush 26 has a seal ring 27 made of an elastic material on its front end surface (the left side surface in FIGS. 1 to 3 and the first seal end surface). In the slide bush 26, on the front side surface of the second flow path forming block 12 of the second joint J2, the seal ring 27 provided on the slide bush 26 abuts on the peripheral portion (second seal end surface) of the opening 12c. A connection position (see FIGS. 2 and 3B) and a separation position that is spaced backward from the front side surface of the second internal flow path forming block 12 of the second joint J2 (see FIGS. 1 and 3A). And can be switched to. And in the said connection position, the seal ring 27 provided in the slide bush 26 is comprised so that this opening 12c and the said 1st internal flow path may be connected, blocking the circumference | surroundings of the said opening 12c.

  Two seal rings 32 are provided on the inner peripheral surface of the front portion of the through hole 22a, and the first internal flow is caused by sliding contact between these seal rings 32 and the outer peripheral surface of the slide bush 26. Oil leakage from the road is prevented.

  Further, a first compression coil spring (first biasing means) 30 for biasing the slide bush 26 toward the connection position is provided in the through hole 22. Specifically, a step portion 26 b is formed at an intermediate position on the inner peripheral surface of the slide bush 26, while a spring seat member 28 is formed on the first internal flow path forming block 22 side at a position further rearward of the slide bush 26. Is fixed, and the first compression coil spring 30 is interposed between the spring seat member 28 and the step portion 26b. A state in which the seal ring 27 of the slide bush 26 is pressed against the peripheral edge of the opening 12c of the second joint J2 by the elastic force of the first compression coil spring 30 (the state shown in FIGS. 2 and 3B). ) Is held.

  A front side portion of a long first valve shaft (valve element member) 34 penetrating from the slide bush 26 to the through hole 22a and the center of the cylinder block 24 is inserted into the slide bush 26. Has been.

  The first valve shaft 34 is supported by the cylinder block 24 so as to be movable in the axial direction, and a large-diameter first valve portion 36 is formed at the front end of the first valve shaft 34. . As shown in FIGS. 3A and 3B, the outer periphery of the first valve portion 36 has a taper in a direction to reduce the diameter toward the rear end side (right side of the drawing) of the first valve shaft 34. A tapered seal surface 36a is formed, and the taper seal surface 36a can be seated on the front end of the inner peripheral surface of the slide bush 26 from the front end side (left side of the figure) of the first valve shaft 34. A seat portion 26a (see FIG. 3A) is formed, and the first internal flow path is blocked from the front by the taper seal surface 36a of the first valve portion 36 contacting and seating on the seat portion 26a. (Valve closed).

  A ring-shaped driving piston member 38 is fixed to the rear end of the first valve shaft 34, and a driving cylinder chamber 40 for storing the driving piston member 38 is disposed at the rear end of the cylinder block 24. The driving cylinder chamber 40 is formed into a front chamber 40a and a rear chamber 40b by a driving piston member 38.

  Further, the cylinder block 24 is provided with ports 42 and 44 that communicate with the front chamber 40a and the rear chamber 40b, respectively, and the ports 42 and 44 are connected to a common hydraulic circuit 46. The hydraulic circuit 46 includes a hydraulic source (not shown) and a switching valve. By operating the switching valve, the hydraulic circuit 46 supplies pressure oil to the front chamber 40a and releases the oil in the rear chamber 40b to a tank (not shown). The reverse drive state in which the first valve shaft 34 is retracted to the retracted position shown in FIG. 1, and the first valve shaft 34 is illustrated by supplying pressure oil to the rear chamber 40b and letting the oil in the front chamber 40a escape to the tank. It is possible to switch to a forward drive state for moving forward to the forward position shown in FIG.

  Here, as shown in FIGS. 1 and 3A, the retracted position of the first valve shaft is such that the first valve portion 36 of the first valve shaft 34 moves rearward from the opening 12c of the second joint J2. The taper seal surface 36a is separated from the first seat portion 26a of the slide bush 26 and is seated, and the slide bush 26 is set back to the spaced position with the contact state. On the other hand, as shown in FIGS. 2 and 3B, the forward position of the first valve shaft is determined by the first valve portion 36 coming into contact with the second valve shaft 16 of the second joint J2. The first valve portion 36 passes through the opening 12c and enters the inside of the through hole 12a while pushing the second valve shaft 16 to the valve opening position against the elastic force of the second compression coil spring 17. It is set to be.

  That is, in this coupling device, the first valve shaft 34 is moved between the forward position and the backward position by the hydraulic cylinder constituted by the driving piston member 38 and the driving cylinder chamber 40 and the hydraulic circuit 46. The drive means for advancing and retreating is configured.

  Further, in this embodiment, a ring-shaped auxiliary piston member 48 is fixed to an intermediate portion of the first valve shaft 34 and an assist cylinder chamber 50 for storing the auxiliary piston member 48 in the cylinder block 24 is provided. The assist cylinder chamber 50 is divided into a front chamber 50 a and a rear chamber 50 b by an auxiliary piston member 48. Further, an assist channel 52 for guiding the oil in the pipe connection port 22b to the rear chamber 50b is formed in the first internal channel forming block 22 and the cylinder block 24 across the blocks 22 and 24. ing.

  The cylinder block 24 is formed with a discharge passage 54 for allowing air in the front chamber 50a to escape to a tank (not shown) when the auxiliary piston member 48 moves forward.

  Next, the usage procedure and operation of the joint device will be described.

  First, both joints J1 and J2 are fixed at positions close to each other as shown, and appropriate pipes are connected to the pipe connection ports 12b and 22b of both joints J1 and J2. At that time, the hydraulic circuit is set in the reverse drive state, and the first valve shaft 34 is moved back to the reverse position shown in FIGS. 1 and 3A.

  In this state, the taper seal surface 36a of the first valve portion 36 provided at the distal end portion of the first valve shaft 34 comes into contact with and sits on the first seat portion 26a of the slide bush 26, and the first internal flow path is viewed from the front. In addition to closing (that is, closing), the slide bush 26 moves back to the separated position against the elastic force of the first compression coil spring 30, whereby the seal ring 27 of the slide bush 26 is moved to the second joint J2. The two flow path forming blocks 12 are separated from the front side surface. Also in the second joint J2, the second valve shaft 16 is held at the valve closing position where the opening 12c is closed by the elastic force of the compression coil spring 16.

  When it is desired to connect both the pipes from this state, the hydraulic circuit 46 is switched to the forward drive state and the first valve shaft 34 is advanced to the forward position. As the first valve shaft 34 moves forward, the slide bush 26 moves to the first compression coil spring 30 while maintaining the contact state between the taper seal surface 36a of the valve portion 36 of the first valve shaft 34 and the first seat portion 26a. The seal ring 27 of the slide bush 26 finally comes into contact with the peripheral edge of the opening 12c on the front end surface of the second internal flow path forming block 12 on the second joint J2 side. It stops at the connection position that closes the surroundings.

  Thereafter, the first valve shaft 34 continues to advance further, and the first valve portion 36 of the first valve shaft 34 abuts against the second valve shaft 16 of the second joint J2, and this is connected to the second compression coil spring 17. The first valve portion 36 reaches the position where it enters the inside of the through-hole 12a through the opening 12c, that is, the forward position shown in FIGS. 2 and 3 (b) while being retracted against the elastic force. To do. In this state, the first valve portion 36 is separated from the first seat portion 26a, and the second valve shaft 16 is pushed to the valve opening position away from the opening 12c. The oil flowing into the through hole 12a is fed into the pipe connected to the pipe connection port 22b through the opening 12c, the center hole of the slide bush 26 and the through hole 22a in this order. That is, the first and second joints J1 and J2 are completely connected.

  In this way, since the joints J1 and J2 can be connected and disconnected only by moving the first valve shaft 34 and the slide bush 26, the required driving force is lower than that of a conventional apparatus that has to transport the entire joint. Since it is greatly reduced, the drive means can be reduced in size. In addition, a large guide mechanism for guiding the entire joint to the connection position is not required. Furthermore, in the conventional apparatus for transferring the entire joint, not only the joint but also the pipe connected thereto must be able to move in conjunction with the joint. In the apparatus of this embodiment, the pipe is connected to the joints J1 and J2. Equipment for moving the piping can be omitted. Then, if the first valve shaft 34 is operated by the driving means, the slide bush 26 may be automatically switched between the connection position and the separation position in conjunction with this, so that the overall apparatus is greatly reduced in size and simplified. Is done.

  Further, in this joint device, the pressure of the oil flowing from the second joint J2 to the first joint J1 is guided to the rear chamber 50b of the assist cylinder chamber 50 through the assist flow path 52, thereby acting as a driving assist force. Thus, the load on the hydraulic circuit 46 is reduced by that amount. Therefore, even when the oil pressure is high, the first valve shaft 34 is kept at the advanced position shown in FIGS. 2 and 3B against the high pressure with a relatively small driving force by the hydraulic circuit 46. Is possible.

  However, in the present invention, it is needless to say that the fluid is not limited to flow from the counterpart joint (the second joint J2 shown) to the joint with valve (the first joint J1 shown).

  Further, in the present invention, the present invention can be applied as a joint for handling water and other various fluids in addition to the oil, regardless of the type of fluid to be handled. The type of the driving means may be set as appropriate according to the pressure of the handled fluid and other specifications.

(Embodiment 2)
4 and 5 show a design example of a joint device for flowing water from the second joint J2 to the first joint J1 at a relatively low pressure.

  In this joint device, the assist means (the auxiliary piston member 48, the assist cylinder chamber 50, the assist flow path 52, etc.) in the first embodiment is omitted, and a cylindrical air cylinder connection block is used instead of the cylinder block 24. 25 is connected to the rear end of the first internal flow path forming block 22. Specifically, the fitting portion 25 a of the air cylinder connection block 25 is fitted into the through hole 22 a of the first internal flow path forming block 22. An air cylinder 60 is connected to the air cylinder connection block 25 as driving means, and the telescopic rod 62 of the air cylinder 60 and the rear end of the first valve shaft 34 are connected in the air cylinder connection block 25. ing.

  Furthermore, when the required driving force is small, the position of the first valve shaft 34 can be switched by, for example, a manual lever operation.

  Other configurations and operational effects are basically the same as those of the first embodiment.

(Embodiment 3)
6-8, the structure of the 1st joint J1 and 2nd joint J2 itself provides the through-hole penetrated in the joint axial direction in the back wall block 14 in the 2nd joint J2, and this through-hole Except that the bearing 18 is provided with a plurality of through holes 18a communicating the through hole 12a and the pipe connection port 12b. This is the same as the second joint J2.

  In this embodiment, as shown in FIG. 8, a plurality of first joints J1 are provided on the fluid supply facility 70A side, and a plurality of second joints J2 respectively corresponding to the first joints J1 are fluid receiving facilities. (For example, an injection mold) 70B is provided on the side. The fluid supply facility 70A includes an oil supply means and a water supply means (not shown) for supplying oil and water to the fluid receiving facility 70B, and a plurality of first and second oil supply means and water supply means respectively connected to the oil supply means and the water supply means. It has a first piping group consisting of one piping 71A. The plurality of first joints J1 disposed in the fluid supply facility 70A are connected to the first pipes 71A, respectively. On the other hand, the plurality of second joints J2 are disposed in the fluid receiving facility 70B so as to be connectable to the first joints J1 provided on the fluid supply facility 70A side, and the fluid receiving facility Each of the second pipes 71B of the second pipe group composed of a plurality of second pipes 71B provided on the facility 70B side is connected to the second pipe 71B.

  According to this embodiment, connection and disconnection operations can be performed for each pair of the first joint J1 and the second joint J2. For this reason, it becomes possible to control whether or not the fluid is supplied to each pair of the first pipe 71A and the second pipe 71B.

  Further, for example, a fixed plate is provided on the fluid receiving facility 70B side, and a plurality of one joints are provided on the fixed plate, while a movable plate movable with respect to the fixed plate is provided on the fluid supply facility 70A side. In order to drive the movable plate when a plurality of other joints are connected to and disconnected from each other by arranging a plurality of other joints on the movable plate and moving the movable plate relative to the fixed plate. An extremely large driving force is required, and it is difficult to obtain a good connection state at each joint pair. On the other hand, according to this embodiment, since connection and disconnection operations are possible for each of the paired first joint J1 and second joint J2, the required driving force is greatly reduced and extremely simple equipment is provided. The joints can be connected and disconnected with each other, and it is easy to obtain a good connection state with each pair of joints.

(Other embodiments)
In addition, the present invention may employ the following embodiments, for example.

  In the above-described embodiments, the second joint J2 has the second valve shaft 16, but the presence or absence of the second valve shaft 16 may be appropriately selected according to the specifications.

  Even when the second valve shaft 16 is used, the second valve portion 16a of the second valve shaft 16 is in contact with the second joint body 10 side and seated, that is, the second seat portion does not necessarily have the opening 12c. Not only the inner peripheral edge but also the second valve portion 16a and the inner peripheral surface of the through hole 12a of the second internal flow path forming block 12 are in contact with each other on the back side (inward side). The road may be blocked. Similarly, the formation position of the first seat portion 26a of the slide bush 26 can be set as appropriate. For example, the back surface of the first valve portion 36 is in contact with the front end surface of the slide bush 26 instead of the inner peripheral surface thereof. It may be.

  Furthermore, the valve body member and the counterpart valve member according to the present invention are not limited to the shaft-shaped members such as the first valve shaft 34 and the second valve shaft 16, and the specific shapes thereof can be set as appropriate.

  In addition, in the above-described embodiment, the first compression coil spring 30 which is the first urging means is incorporated separately from the slide bush 26. For example, the elastic deformation portion is provided on the slide bush 26 itself, for example. Thus, the slide bush 26 may be switched between the connection position and the separation position. That is, the slide bush 26 and the first urging means may be integrated. Similarly, the counterpart valve member and the second urging means can be integrated.

  In the above-described embodiment, the example in which the seal ring 27 is provided on the front end surface (first seal end surface) of the slide bush 26 has been described. However, the front end surface (second sheet end surface) of the counterpart second internal flow path forming block 12 is described. ) May be provided, or the seal ring 27 may be provided on both the first seal end face and the second seal end face.

It is a cross-sectional front view which shows the state by which the joint is cut away in the joint apparatus which concerns on Embodiment 1 of this invention. It is a cross-sectional front view which shows the state in which the joints were connected in the joint apparatus shown in FIG. (A) is the figure which expanded the principal part of FIG. 1, (b) is the figure which expanded the principal part of FIG. It is a cross-sectional front view which shows the state by which the joints are cut | disconnected in the coupling apparatus which concerns on Embodiment 2 of this invention. It is a cross-sectional front view which shows the state in which the joints were connected in the joint apparatus shown in FIG. It is a cross-sectional front view which shows the state by which the joint is cut away in the joint apparatus which concerns on Embodiment 3 of this invention. It is a cross-sectional front view which shows the state in which the joints were connected in the joint apparatus shown in FIG. It is a front view which shows the example of application in the case of using two or more joint apparatuses shown in FIG.

Explanation of symbols

J1 ... 1st joint (joint with valve)
J2 ... Second joint (mating joint)
10 ... 2nd joint body (mating joint body)
12a ... Through hole (mating hole on the opposite side and constituting the other side internal flow path)
12b ... Piping connection port (configures the other party's internal flow path)
16 ... Second valve stem (counter valve member)
16a ... 2nd valve part 17 ... 2nd compression coil spring (other party biasing means)
20 ... 1st joint body (joint body of joint with valve)
22a ... Through hole (shaft hole and constitutes the internal flow path of the joint with valve)
22b ... Piping connection port (configures the internal flow path of the joint with valve)
26 ... Slide bush 27 ... Seal ring 30 ... First compression coil spring (biasing means)
34 ... 1st valve stem (valve element)
36 ... 1st valve part 38 ... Piston member for a drive (a drive means is comprised)
40 ... Cylinder chamber (constitutes drive means)
46 ... Hydraulic circuit (constitutes drive means)
48 ... Auxiliary piston member (piston part)
DESCRIPTION OF SYMBOLS 50 ... Cylinder chamber for assistance 52 ... Assist flow path 60 ... Air cylinder (drive means)
70A ... Fluid supply facility 70B ... Fluid receiving facility

Claims (6)

A valved joint used for connection to a hydraulic pipe having an internal flow path and a valve mechanism capable of switching between a state in which the internal flow path is closed and a state in which the internal flow path is connected to an opening provided in the counterpart joint Because
A shaft hole extending at least in a joint axial direction to form at least a part of the internal flow path, the shaft hole facing an opening of the counterpart joint, and the shaft hole being separated from the opening of the counterpart joint A joint body provided in a fixed state at a position to
The joint body is slidably disposed in the shaft hole, and has a center hole, a seat portion, and a seal end surface forming a part of the internal flow path, and the seal end surface is an opening of the counterpart joint. It is possible to move forward and backward between a connection position where the opening and the center hole can be communicated with each other while abutting the periphery of the opening and closing the periphery of the opening, and a separation position where the seal end face is separated from the mating joint. A slide bush supported by the joint body,
A biasing means interposed between the joint main body and the slide bush to bias the slide bush toward the connection position;
A forward position through which the valve portion is inserted into the shaft hole and the central hole and can be seated on the seat portion, and the valve portion passes through the opening and enters the counterpart joint; and A valve body member supported by the joint body so that the valve portion can move forward and backward between a retreat position where the valve portion retreats from the counterpart joint;
When the valve body member is retracted to the retracted position, the valve portion of the valve body member is seated on the seat portion of the slide bush to block the internal flow path, and the slide bush is used as an urging force of the urging means. Accordingly, the valve body member moves forward to the forward movement position, so that the valve portion of the valve body member separates from the seat portion of the slide bush and opens the internal flow path. And a valve joint, wherein the slide bush is advanced to the connection position by the urging force of the urging means.   2. The joint with valve according to claim 1, further comprising drive means for moving the valve body member forward and backward between the forward position and the backward position.   The valve body member has a piston portion on the base end side rearward of the valve portion, and the joint body stores the piston portion and is divided into a front chamber and a rear chamber by the piston portion. 3. The valved joint according to claim 1, further comprising: an assist flow path for guiding the fluid pressure supplied to the internal flow path to a rear chamber of the cylinder chamber. A joint device comprising the valved joint according to any one of claims 1 to 3 and the mating joint having a mating internal passage that communicates with the opening, wherein the mating joint communicates with the opening and the opening. And a mating joint body having a mating shaft hole extending at least in the joint axial direction and forming at least a part of the mating internal flow path
When the valve body member advances to the advance position in a state where the opening of the counterpart joint and the shaft hole of the joint body face each other and are spaced apart from each other, the urging force The slide bush is advanced to the connection position by the urging force of the means, and the valve portion separated from the seat portion of the slide bush passes through the opening and enters the counterpart joint, whereby the inside of the counterpart bush A joint device characterized in that a flow path and an internal flow path of the joint with valve are communicated. The mating joint is inserted into a mating shaft hole of the mating joint body, and a valve closing position that closes the opening and a valve opening that opens backward from the valve closing position to the inside of the mating shaft hole. A counterpart valve member supported by the counterpart joint body so as to be able to advance and retract between positions, and a counterpart biasing means for biasing the counterpart valve member toward the valve closing position,
When the valve body member of the joint with valve is advanced to the advance position, the valve body member is configured to push the counterpart valve member to the open position against the biasing force of the counterpart biasing means. The joint device according to claim 4, wherein   One of the joint with valve and the counterpart joint is arranged on the supply equipment side having a fluid supply means for supplying fluid to the receiving equipment and a first pipe group consisting of a plurality of first pipes. In addition, each of the first pipes is connected to the other, and the other of the joint with valve and the counterpart joint can be connected to each of the joints provided on the supply equipment side. As described above, the plurality of pipes are arranged on the receiving equipment side and are connected to the second pipes of the second pipe group including the plurality of second pipes provided on the receiving equipment side. The joint device according to claim 4 or 5.

Images