JPH0968293A - Plug-in connection type tube coupling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a plug-in connection by a light pressing force which is not controlled by a fluid pressure, by opening a valve between both communicating ports, after a female type coupling member is moved to a restrained position, in the connecting work. SOLUTION: By inserting a male type coupling member 101 to a coupling member 41, a taper form of pressing surface 104 is abutted to a pressure receiving surface 45. When the coupling member 101 is pressed in further against a press spring 47 after that, the coupling member 41 is slided to the rear side, engaging balls 34 drop in engaging round grooves 105 by an operating cam surface 57, depending on the elastic force by a pressing spring 58, at the time when a butting end 46 passes the positions of the engaging balls 34, and the male type coupling member 101 is restrained at its position. At the same time, a release member 51 moves to the front side, the engaging balls 34 are restrained by a sliding surface 56, and the operating cam surface 57 is hit to a pressure receiving surface 35. And, following the sliding of the release member 51, the primary side communication port 23 and the secondary side communication port 24 are communicated through a communicating passage 53, and the plug-in connection of the male type coupling member 101 is completed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a female joint member provided in an internal passage for introducing a pressurized fluid of a pipe joint body, and an external male joint member is plug-in connected to the internal joint passage to form an internal passage. And a plug-in connection type pipe joint device with an on-off valve capable of discharging the pressurized fluid introduced, and more specifically, a plug-in connection of a male joint member to a female joint member in a pipe joint body. The connected open valve is restrained according to the release of the pressurized fluid by opening the internal equivalent valve, and the plug-out is removed when the restraint is released from the connected open state. The present invention relates to a plug-in connection type pipe joint device with an on-off valve, which is configured to shut off a flow path by closing a valve of a section.

[0002]

2. Description of the Related Art Conventionally, a plug-in connection type pipe joint device with an on-off valve of this type, that is, in this case, a female joint member provided in an internal flow path for introducing a pressurized fluid of a pipe joint body is used. By manually plug-in connecting the external male joint member, the opening / closing valve corresponding portion is automatically opened to allow the pressurized fluid to be led out, and the connected valve is opened by the restraining means. The restraint by the restraint means is released and the male joint member is manually plugged out by restraining and maintaining and maintaining the connection valve open state by manually operating the releasing means. In the plug-in connection type pipe joint device with an on-off valve, the internal flow passage of the pipe joint main body, here, the primary side flow passage for introducing the pressurized fluid and the secondary side flow for discharging the pressurized fluid. An open / close valve mechanism is placed between the The closed state by the pressure contact of the valve body with the valve seat of the on-off valve mechanism is maintained by the combined pressure of the spring pressure of the valve spring from the primary flow path side and the fluid pressure of the pressurized fluid. It is a common form.

Regarding the connection of the male joint member from the secondary flow passage side to the female joint member in the secondary flow passage, the pushing force against the combined pressure force of the spring pressure and the fluid pressure is used. The opening / closing valve is simultaneously opened by plugging in with the plug-in.On the other hand, when the male joint member is disconnected after the plug-in connection, similarly, the opening / closing valve is opened / closed by the combined pressurizing force of the spring pressure and the fluid pressure. It is plugged out by pulling it out while closing the valve.

[0004]

However, in the case of the above-mentioned conventional plug-in connection type pipe joint device with an on-off valve, the structure of the on-off valve mechanism portion incorporated in the pipe joint body,
The respective configurations of the restraint mechanism portion and the release mechanism portion for holding the restraint after opening and closing the valve and for releasing the restraint prior to non-closing the valve are relatively complicated, respectively, and the mechanism portions are There is a tendency that the number of component parts of
When plugging in the male joint member to the female joint member in the pipe joint body, pushing force against the combined pressure of spring pressure and fluid pressure is required. Since the combined pressure of the spring pressure of the valve spring from the primary side flow path side and the fluid pressure of the pressurized fluid is used, the valve open state is not always present when the fluid pressure changes. There was an undesirable problem that it was not stable.

The present invention has been made to solve the above-mentioned conventional problems, and its purpose is to:
The on-off valve mechanism section, the restraint mechanism section and the release mechanism section are each configured with a simple and small number of parts, and the plug-in connection operation can be easily performed with a light pressing force that is not affected by the fluid pressure of the pressurized fluid. In addition, the valve open state after connection is maintained regardless of changes in fluid pressure, and as a result,
(EN) Provided is a plug-in connection type pipe joint device which realizes appropriateness of opening and closing of an internal flow path, restraint holding and release of the restraint accompanying the opening and closing of the flow path, and ease of operation.

[0006]

In order to achieve the above-mentioned object, a plug-in connection type pipe joint device according to the present invention has a male joint member external to a female joint member provided in an internal passage of a pipe joint main body. A pipe joint device for connecting a mold joint member in a plug-in manner, wherein as the internal flow passages, each internal flow passage on the introduction side and the extraction side divided by a partition wall is formed, and each internal flow passage is introduced. And a pipe joint main body that is opened to the outer peripheral portion by each of the communication ports on the outlet side and has an opening / closing valve equivalent part for opening and closing the flow path between the communication ports, and that corresponds to the connection end of the pipe joint main body. On the side, a restraint mechanism portion having restraint means for engaging and restraining the male joint member to be plugged in is provided, and slidably inserted into the internal flow path on the side corresponding to the connection end portion. The joint mechanism section that includes a female joint member that is pressed and constantly pressed toward the connection end. Only the outer peripheral portion of the fitting body is oppressed to always-end side is slidably inserted,
Further, a joint mechanism portion having a release member having a communication passage capable of communicating and opening and closing the on-off valve corresponding to each of the communication ports on the introduction side and the discharge side is provided, and when the male joint member is not connected. While maintaining the restraint means in the non-restraint position from the inner circumference side by the female joint member and from the outer circumference side by the release member, the communication passages close the respective communication ports, and at the time of connection, the male joint With the connection of the members, the female joint member is moved to the restraining position to allow the engagement by the restraining means, and the releasing member is moved to the engaging position to maintain the restrained state, and the communicating passages are used to communicate with each other. Open the mouth,
It is characterized in that the release member is moved to the engagement position so that the restrained state can be released.

Therefore, in the plug-in connection type pipe joint device of the present invention, the male joint to the female joint member of the joint mechanism portion is kept in the non-connection closed state by the valve closing position holding means of the opening / closing valve mechanism portion. By the plug-in connection of the member, the opening / closing valve equivalent portion of the opening / closing valve mechanism section is opened, the connected valve open state is engaged and restrained by the restraint means of the restraint mechanism portion, and the release member of the release mechanism portion engages. The combined restraint state is maintained. Also, by operating the release member of the release mechanism section while the connection valve is kept open, the engagement restriction of the female joint member of the joint mechanism section is released and the opening / closing valve equivalent section is closed. Then, the male joint member is plugged out from the female joint member.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a plug-in connection type pipe joint device according to the present invention will be described below in detail with reference to FIGS. 1 and 2.

FIG. 1 shows an external view of a plug-in connection type pipe joint device to which an embodiment of the present invention is applied. FIG. 1 (a) shows a state before connection of a male joint member. FIG. 1 (b) is an overall side view showing the pipe joint body according to FIG. 1A shows a valve-opening state by connecting engagement / restriction of a male joint member to an upper half of a female joint member in the pipe joint body. FIG. 1 is an overall side view showing the valve closed state in which the restraint is released (the valve closed state by the insertion / non-engagement / non-restraint of the male joint member) in the lower half part, respectively.
FIG. 2C is an overall side view showing the pipe joint body in a state after the male joint member is connected, and FIG.
It is the whole longitudinal cross-sectional view which shows the valve closed state (upper half part) and valve closed state (lower half part) in (b).

In the construction of the embodiment apparatus shown in FIGS. 1 (a), 1 (b), 1 (c) and FIG. 2, the plug-in connection type pipe joint device is provided with a pipe joint body A and An on-off valve mechanism unit B that is respectively incorporated in the main body A to open and close the flow path, a joint mechanism unit C that plugs in an external male joint member 101, and a connection valve open state by the joint mechanism unit C is restricted. The restraint mechanism portion D holds the restraint mechanism portion D, and the release mechanism portion E releases the restraint hold by the restraint mechanism portion D. Further, in the case of the device configuration according to this embodiment, the joint mechanism portion C includes a part of the restraint mechanism portion D, and the release mechanism portion E includes the other portion of the restraint mechanism portion D. The pressurized fluid is tentatively always introduced to the side of the pipe joint body A, and is derived from the male joint member 101 side with the plug-in connection of the male joint member 101.

Here, the male joint member 101 has a connection side internal flow channel 102, and a tip connecting portion 103 and a tapered pressing surface 104 for connecting to a female joint member described later, and Engagement circumferential grooves 105 for restraining and holding the connection valve open position at some of the engaging balls are formed respectively.

The pipe joint main body A is composed of a main body member 11, a valve member 21, and a restraining member 31 each having a cylindrical shape, and these respective members are wholly integrated by being screwed together. The primary internal flow passages 10a on the main body member 11 and the valve member 21 side, and the secondary internal flow passages on the valve member 21 and the restraining member 31 side that are coupled to each other in common in the axial direction. 10b and 10b, respectively.

On the outer peripheral surface side of the body member 11, from the mounting end side (hereinafter referred to as rear side or rear end) to the connection end side (hereinafter referred to as front side or front end), one by one, A connection beak 12 into which a fluid tube (not shown) for introducing a pressurized fluid is inserted, a male screw portion 13 into which the retaining ring member 201 of the fluid tube to be inserted is screwed, and an outer peripheral surface 14 are separated from each other. And a sliding surface 15 of each of them, and a female screw portion 16 is formed on a front inner peripheral surface corresponding to the primary side internal flow path 10a.

The valve member 21 is connected to the primary side internal flow path 1
0a and the secondary side internal flow channel 10b are separated from each other, and the primary side internal flow channel 10a is opened to communicate with the primary side communication port 23 and the secondary side internal flow channel 10b is communicated to the outer peripheral side. The secondary side communication port 24 to be opened is opened,
A male screw portion 25 that is screwed to the female screw portion 16 of the main body member 11 is formed on the outer peripheral surface on the rear end side, and a male screw portion 26 is formed on the outer peripheral surface on the front end side.

The seal ring 2 is provided on the rear side and the front side of the outer peripheral groove 27 which opens the secondary side communication port 24.
Nos. 8 and 28 are fitted to each other, and a second sliding surface 29 is formed on the inner peripheral surface on the front side corresponding to the secondary internal flow path 10b.

A third sliding surface 32 is formed on the outer peripheral surface on the rear side of the restraint member 31, and the third sliding surface 32 is formed.
The ball holes 33 penetrating the inner and outer peripheral surfaces are formed at a plurality of angular positions spaced equiangularly with respect to the position closer to the front side of the. Engaging balls 34 capable of selectively projecting to either side are loosely fitted to each other, and a cam pressure receiving surface 35 is provided at a front end of the third sliding surface 32, which will be described later. E, in this case
It is started up following the operation cam surface of the restraint mechanism section D.

On the rear side of the inner peripheral surface, the valve member 2 is provided.
A female screw portion 36 that is screwed to the male screw portion 26 of No. 1 is formed, and an abutting step portion 37 facing rearward is formed on the inner surface of the front side of each ball hole 33.

Here, as will be described later, each of the engagement balls 34 is projected toward the inner peripheral surface side when the connection valve is opened.
It is projected to the outer peripheral surface side when the valve is not connected.

The joint mechanism portion C including a part of the restraint mechanism portion D is provided with respect to the inside of the second sliding surface 29 of the valve member 21.
An annular female joint member 41 is formed by fitting a fourth sliding surface 42 on the outer peripheral surface to make it slidable, and fitting a seal ring 43 on the fourth sliding surface 42 for sealing. Have,
A seal ring 44 that seals between the female joint member 41 and the distal end connecting portion 103 of the male joint member 101 is fitted to the intermediate portion of the inner peripheral surface, and the inner peripheral surface is provided on the front side. Is
A tapered pressure receiving surface 45 for receiving the pressure of the tapered pressing surface 104 is formed, and an abutting end portion 46 is formed at the front end.

The female joint member 41 is located inside the valve member 21 of the pipe joint body A, and between the end face of the partition wall 22 of the valve member 21 corresponding to the secondary internal flow passage 10b. Since the pressing spring 47 is interposed, the elastic force is always directed forward, and in this state, as shown in the upper half of FIG. A cam action on the lower hemisphere of the compound ball 34 pushes the engaging balls 34 toward the outer peripheral side, and
Is maintained by the fourth sliding surface 42, and the abutting end portion 46 is abutted against the abutting stepped portion 37 of the restraining member 31 to maintain a non-connection closed valve state as described later. are doing.

The release mechanism portion E including the other portion of the restraint mechanism portion D is commonly fitted to the outer peripheral surfaces of the main body member 11, the valve member 21 and the restraint member 31 which constitute the pipe joint main body A. There is provided an annular release member 51 which is inserted to make it slidable, and in which a seal ring 52 which is slidably contacted with the first sliding surface 15 and is sealed is fitted, and an inner peripheral surface of the release member 51. A communication passage 53 for opening and closing a portion corresponding to an on-off valve to be described later and a fifth sliding surface 54 which is slidably contacted with each of the seal rings 28 to be sealed are formed in the intermediate portion, Further, an operation in which a sixth sliding surface 56 which is in the inner peripheral surface and is in sliding contact with the third sliding surface 32 is formed on the front end side, and an operating cam surface 57 is formed in the inner peripheral front surface The cam ring 55 is fixed by crimping.

Here, as for the place where the communication channel 53 is formed, in the non-connection closed state, as shown in the upper half of FIG. 2, the primary side communication channel for communicating and opening the primary side internal channel 10a is opened. As shown in the lower half of FIG. 2, which is located only on the outer peripheral side of the port 23 and is in the connection valve open state, the outer peripheral part of the primary side communication port 23 and the secondary side internal flow channel 10
It is set so as to be positioned across the outer peripheral portion of the outer peripheral groove 27 in which the secondary side communication port 24 for communicating and opening b is opened.

The main release member 51 is fitted and inserted in common to the outer peripheral surfaces of the main body member 11, the valve member 21, and the restraining member 31 of the pipe joint main body A, and the front end surface of the valve member 21. A pressing spring 58 is provided between the operation cam ring 55 and the rear end surface.
By being inserted, it is always suppressed toward the front side,
In this state, as seen in the upper half of FIG. 2, the operating cam surface 57 of the operating cam ring 55 is brought into contact with the upper hemispherical surface of each engaging ball 34 pushed toward the outer peripheral side, and will be described later. As described above, the non-connection valve closed state is maintained.

On the other hand, as is clear from the above respective configurations,
In the case of the device of this embodiment, the on-off valve mechanism section B is
An on-off valve including a valve member 21 in which the primary side communication port 23 and the secondary side communication port 24 in the pipe joint body A are opened, and a release member 51 in which a communication flow path 53 in the release mechanism section E is formed, As a result, the on-off valve equivalent part is generally configured.

Next, the operation of the apparatus of this embodiment will be described.

In the case of the non-connection closed state shown in the upper half of FIG. 1 (a) and FIG. 1 (b), in other words, the upper half of FIG. 2, the joint mechanism including a part of the restraint mechanism D In the portion C, the butting end portion 46 of the female joint member 41 is brought into contact with the butting step portion 37 of the restraining member 31 in the pipe joint body A by the elastic force of the pressing spring 47, and each engagement is performed. The ball 34 is pushed outward.

On the other hand, in the release mechanism portion E including the other portion of the restraint mechanism portion D, the operation cam surface 55a of the operation cam ring 55 of the release member 51 is brought into contact with the upper hemisphere of each engagement ball 34, and The elastic force of the stored pressing spring 58 constantly presses each of the engagement balls 34 toward the inner peripheral surface side, and at the same time, the communication flow passage 53 opens the communication of the primary side internal flow passage 10a. It is located on the outer peripheral side of the side communication port 23, and the fifth sliding surface 54 closes the secondary side internal flow path 10b.

Therefore, in this valve closed state, the pressurized fluid introduced into the primary side internal flow passage 10a is the secondary side internal flow passage 10b.
Will never be derived.

Thus, in the non-connection closed state, from the front side of the pipe joint body A, the joint member 41 of the joint mechanism portion C is formed.
On the other hand, when the male joint member 101 is inserted in the connecting direction, first, the tip connecting portion 103 is sealed by the seal ring 44, and then the tapered pressing surface 104 contacts the tapered pressure receiving surface 45. Further, the operation during this period requires only an insertion force and does not require any pressing force.

Subsequently, when the male joint member 101 is further pushed against the elastic force of the pressing spring 47, the joint member 41 slides backward while storing the pressing spring 47.
When the abutting end portion 46 passes the corresponding position of each engagement ball 34, it is pressed toward the inner peripheral surface side by the operation cam surface 57 under the elastic force of the pressing spring 58 of the release mechanism portion E. The inner portion of each engagement ball 34 falls into the engagement peripheral groove 105 and is abutted and engaged with the rear inner surface of the engagement peripheral groove 105 to restrain and secure the male joint member 101 at a corresponding position. At the same time, the depressed engagement balls 34 are pressed toward the outer peripheral surface by the cam action of the contact surface due to the elastic force of the pressing spring 47 that is simultaneously stored,
Further, with the depression engagement, the release member 51 is
Moves to the front side and restrains the outer portion of each engagement ball 34 pressed to the outer peripheral surface side by the sixth sliding surface 56, and finally the operating cam surface 57 receives the cam pressure. Surface 3
It hits 5.

Further, as the release member 51 in the release mechanism section E slides forward, the release valve 51 is maintained at the outer peripheral side of the primary side communication port 23 until then, thereby maintaining the on-off valve. The communication passage 53, which has secured the opening / closing valve equivalent part of the mechanism section B in the closed state, is moved to a position straddling the secondary side communication port 24,
The primary-side communication port 23 and the secondary-side communication port 24, and by extension, the primary-side internal flow channel 10a and the secondary-side internal flow channel 10b are communicated via the communication flow channel 53, and as a result, the opening / closing valve equivalent part is connected. Shifts to the valve open state. The pushing operation here may be performed only against the elastic force of the pressing spring 47, and is not affected by the pressurized fluid introduced into the primary side internal flow path 10a. It is extremely easy to do.

That is, the plug-in connection of the male joint member 101 to the required pipe joint body A here is completed by the above insertion and pushing operations.

Therefore, when the opening / closing valve corresponding portion is moved to the open state by the plug-in connection of the male joint member 101 in this manner, that is, the lower half portion of FIG. 1 (a) and FIG. 1 (b), In other words, in the connection valve open state shown in the lower half of FIG. 2, in the joint mechanism portion C including a part of the restraint mechanism portion D, the female joint is formed by the tapered pressing surface 104 of the male joint member 101. The taper-shaped pressure receiving surface 45 of the member 41 is moved to the rear side while the pressure spring 47 is being stored, and the male joint member 101 is provided with a locking engagement of each engagement ball 34 into the engagement peripheral groove 105. Depending on the combination, the movement position, here,
It will be secured in the valve open position.

On the other hand, in the release mechanism portion E including the other portion of the restraint mechanism portion D, the release member 51 is moved by the stored pressure spring 58, in this case, the operating cam surface 57 abuts against the cam pressure receiving surface 35. The engagement of each engaging ball 34 is maintained by the sixth sliding surface 56 for the movement until the valve member 21 in the pipe joint body A is moved.
Primary side communication port 2 for communicating and opening the primary side internal flow path 10a
By being located over the outer peripheral side of 3 and the outer peripheral side of the secondary side communication port 24 that communicates and opens the secondary side internal flow channel 10b, communication between these two, that is, valve opening is performed. Therefore, after the plug-in connection of the male joint member 101, the pressurized fluid introduced into the primary-side internal flow passage 10a passes through the secondary-side internal flow passage 10b and the male-type Joint member 1
01 is led to the connection side internal flow channel 102.

Next, with the connection valve opened, the releasing member 51 of the releasing mechanism E is slid rearward against the elastic force of the pressing spring 58, that is, in this case, the primary side communication port. When the communication flow passage 53, which is located across the outer peripheral side of 23 and the outer peripheral side of the secondary side communication port 24, is located only on the primary side communication port 23 side and the valve is closed, the sixth sliding The engagement maintenance of the outer portion of each engagement ball 34 by the surface 56 is released,
In addition, the engaging springs 34 are stored in the engaging balls 34.
Since the pressing force is applied to the outer peripheral surface side by the, the pressing force pushes it toward the outer peripheral surface side, whereby the restraint on the male joint member 101 is also released and the releasing member 51 returns, and at the same time. With the release of the restraint,
The female joint member 41 of the joint mechanism portion C is also restored, and the entire device shifts to the previous valve closed state. In this valve closed state, the male joint member 101 can be easily pulled out. The moving operation of the releasing member 51 here may be performed only against the elastic force of the pressing spring 58, and any operation from the pressurized fluid introduced into the primary side internal flow path 10a may be performed. It can be done very easily without being affected.

That is, by the above-mentioned restraint release operation, the required plug-out separation of the male joint member 101 from the pipe joint body A is completed.

[0037]

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 flow passage of the pipe joint body. In the pipe joint device to be formed, while forming each internal flow path on the introduction side and the discharge side, which are mutually partitioned by a partition wall,
Each internal flow path is opened to the outer peripheral portion by each communication port on the introduction side and the discharge side, and a pipe joint body having an opening / closing valve equivalent portion for opening and closing the flow passage is provided between each communication port, and a pipe joint body. On the side corresponding to the connection end portion of, a restraint mechanism portion provided with restraint means for engaging and restraining the male joint member to be plug-in connected,
In the internal flow path on the side equivalent to the connection end, a joint mechanism section is provided that includes a female joint member that is slidably inserted and is constantly elastically pressed toward the connection end side. Is equipped with a release member that is slidably inserted and is always elastically pressed toward the connection end side, and that has a communication passage that can open and close the opening and closing valve corresponding portion for each communication port on the introduction side and the discharge side. When the male joint member is not connected, the joint mechanism section is provided, and the female joint member maintains the restraint means in the non-restrained position from the inner peripheral side and the release member from the outer peripheral side. The communication ports are closed by, and at the time of connection, with the connection of the male joint member, the female joint member is moved to the restraining position to allow the engagement by the restraining means, and the releasing member is brought to the engaging position. While maintaining the restraint state by shifting, the communication passage opens the valve between each communication port. It is so arranged may release the restrained state by migrating the release member in the engaged position, the following effects can be obtained.

That is, with the plugged connection of the male joint member to the female joint member of the joint mechanism portion in the unclosed closed state by the valve closing position holding means of the on-off valve mechanism portion, The equivalent valve part can be opened, at the same time the connected valve open state can be engaged and restrained by the restraint means of the restraint mechanism part, and the engaged and restrained state can be maintained by the release member of the release mechanism part. By operating the release member of the release mechanism section while restrained and held in the state, it is possible to release the engagement constraint of the female joint member of the joint mechanism section, and at the same time, close the on-off valve equivalent part and close the female part. The male joint member can be plugged out from the male joint member, and
Each of these operations has excellent features that it can be performed smoothly and quickly by an easy and light operating force without being affected by the fluid pressure of the pressurized fluid, and that it is relatively simple in structure and can be easily performed. It is a thing.

[Brief description of drawings]

FIG. 1 shows an external view of a plug-in connection type pipe joint device to which an embodiment of the present invention is applied.
FIG. 1B is an overall side view showing the pipe joint body in a state before connection of the male joint member, and FIG. 1B shows connection engagement / restriction of the male joint member with respect to the female joint member in the pipe joint body. The overall side view showing the valve open state by the upper half part and the closed state (valve closed state by insertion non-engagement / non-restraint of the male joint member) with the restraint released in the lower half part. FIG. 1C is an overall side view showing the pipe joint body in a state after the male joint member is connected.

FIG. 2 is an overall vertical cross-sectional view showing a valve closed state (upper half portion) and a valve closed state (lower half portion) corresponding to FIG. 1B in the plug-in connection type pipe joint device according to the embodiment.

[Explanation of symbols]

 A pipe joint body B open / close valve mechanism portion C joint mechanism portion D restraining mechanism portion E release mechanism portion 10a primary side internal flow passage 10b secondary side internal flow passage 11 main body member 12 connection beak 13 male screw portion 14 outer peripheral surface 15 first Sliding surface 16 Female screw portion 21 Valve member 22 Partition wall 23 Primary side communication port 24 Secondary side communication port 25, 26 Male screw portion 27 Outer peripheral groove 28 Seal ring 29 Second sliding surface 31 Restraint member 32 Third sliding surface 33 ball hole 34 engagement ball 35 cam pressure receiving surface 36 female screw portion 37 abutting step portion 41 female joint member 42 fourth sliding surface 43, 44 seal ring 45 tapered pressure receiving surface 46 abutting end portion 47 pressing spring 51 Release Member 52 Seal Ring 53 Communication Channel 54 Fifth Sliding Surface 55 Working Cam Ring 56 Sixth Sliding Surface 57 Working Cam Surface 58 Pressing Spring 101 Male Joint Member 102 Contact Side internal passage 103 distal connecting portion 104 tapered pressing surface 105 engages the circumferential groove 201 押止 ring member

Claims (1)

[Claims] 1. A pipe joint device for connecting an external male joint member to a female joint member provided in an internal passage of a pipe joint body by plug-in connection, wherein the internal passages are mutually separated by partition walls. In order to open and close the flow passages between the communication ports, each of the internal flow passages on the inlet side and the outlet side that are divided is formed, and each internal flow passage is opened to the outer peripheral portion by the respective communication ports on the inlet side and the outlet side. Of the opening / closing valve, and a restraining means for engaging and restraining the male joint member to be plug-in connected, on the side corresponding to the connecting end of the pipe joint body. And a coupling mechanism portion provided with a female coupling member that is slidably inserted into the internal flow path on the side corresponding to the connection end portion and is elastically pressed toward the connection end portion side at all times. The pipe fitting body is slidably inserted into the outer periphery of the fitting body, and is constantly elastically pressed toward the connection end side. The inlet-side and outlet-side corresponding to each communication port is configured by providing a joint mechanism portion having a release member having a communication channel capable of opening and closing the on-off valve corresponding portion, and when the male joint member is not connected, The female joint member maintains the restraint means in the non-restraint position from the inner peripheral side and the release member from the outer peripheral side, respectively, and the communication passages close the respective communication ports, and at the time of connection, the male joint member. Connection, the female joint member is moved to the restraining position to allow the engagement by the restraining means, and the release member is moved to the engaging position to maintain the restrained state, and the communicating passages are used to connect the communication ports. A plug-in connection type pipe joint device, characterized in that the valve is opened and the release member is moved to an engagement position to release the restraint state.