JPH08277985A - Plug-in connection type pipe joint device - Google Patents

Abstract

PURPOSE: To surely carry out locking retention and to facilitate operation by providing a locking-releasing mechanism unit by which a connecting condition is locked and maintained when an engaging cam pin for locking is projected so as to be engaged with an opening ring means in a valve opening position while this locking retention is released when the engaging cam pin for locking is retracted. CONSTITUTION: In a non-connection valve closing condition by means of a pressing spring 51 in a valve opening/closing mechanism unit B, a valve of an opening/closing valve equivalent part 44 is opened by means of plug-in connection in a male type joint member 101 opposed to a female type joint member 41. A connection valve opening condition is engagingly maintained by means of an operation cam part 71 and a pressing spring 81, which are arranged in an opening ring 61 in a joint mechanism unit C, and this condition is locked by means of an engaging cam pin 91 in a locking-releasing mechanism unit D. When a connection valve opening condition is locked by means of the pressing spring 81, a lock of an opening ring 61 is released by operating the cam pin 91, and then, locking retention of the male type joint member 101 is released by operating the opening ring 61, and consequently, the male type joint member 101 is plugged out so as to be released.

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 main body member, and an external male joint member is plugged in to the pressurized fluid. With regard to the plug-in connection type pipe joint device adapted to derive the above, more specifically, of the opening / closing valve equivalent part by the plug-in connection of the male joint member to the female joint member in the pipe joint main body in which the equivalent valve part is installed. Restraining the valve open state and the connection valve open state,
The present invention relates to a plug-in connection type pipe joint device capable of easily closing a valve-equivalent portion by disconnecting a plug-out in accordance with release of a constraint from a connected valve open state.

[0002]

2. Description of the Related Art Conventionally, a plug-in connection type pipe joint device of this type, that is, in this case, a male joint outside a female joint member provided in an internal flow path for introducing a pressurized fluid of a main body member is used. By manually connecting the joint member with a plug-in connection,
The part corresponding to the on-off valve is automatically opened to allow the pressurized fluid to be led out, and in the connection open state, the stopper means is automatically locked to the stopper means to maintain the constraint. A plug-in for manually releasing the restraint of the stopper means to the restraining means while operating the connection valve open state and operating the releasing means to manually disconnect the male joint member from the plug-out. In the connection type pipe joint device, an opening / closing valve mechanism is provided between the internal flow path of the main body member, here, the primary flow path for introducing the pressurized fluid and the secondary flow path for discharging the pressurized fluid. Maintaining the closed state by interposing the valve body by pressing the valve body against the valve seat of the on-off valve mechanism is achieved by combining the spring pressure of the valve spring from the primary side flow path side with the fluid pressure of the pressurized fluid. It is common practice to use pressure, and Connecting the male coupling member from the secondary side flow path for the female coupling member of the secondary-side flow path is
By plugging in with a pushing force that resists the combined pressurizing force of the spring pressure and the fluid pressure, the on-off valve is opened at the same time.On the other hand, regarding the separation of the male joint member after the plug-in connection, Similarly, plug-out is performed by pulling out while opening and closing the on-off valve by the combined pressurizing force of the spring pressure and the fluid pressure.

[0003]

However, in the case of the above-mentioned conventional plug-in connection type pipe joint device, restraint / release between restraint holding after connection valve opening and restraint release prior to valve non-connection is released. There is an unfavorable problem that the structure itself of the mechanism part tends to be relatively complicated and the number of parts constituting the restraint / release mechanism part also increases.

The present invention has been made to solve the above-mentioned conventional problems, and the purpose thereof is to:
Provided is a plug-in connection type pipe joint device with an on-off valve of this type, which is simple and has a small number of parts to configure the restraint / release mechanism, and can realize the precision of holding the restraint and the ease of operation. It is to be.

[0005]

In order to achieve the above object, a plug-in connection type pipe joint device according to the present invention is provided with an opening / closing valve for opening and closing an internal flow passage of a pipe joint main body, and the internal flow passage is provided in the internal flow passage. A pipe joint device for opening and closing a valve by plugging in an external male joint member with respect to a female joint member provided, and closing the internal passage in the pipe joint body. An on-off valve mechanism section having an on-off valve equivalent part for opening and closing, and an on-off valve mechanism part having a closing position holding means for elastically pressing the on-off valve equivalent part toward the valve closing position side; Actuating cam means for restraining the male joint member to the valve opening position when the opening / closing valve equivalent portion is opened by plug-in connection of the male joint member to the female joint member against It includes a valve opening position holding means for elastically pressing the means toward the valve opening position side at all times. A joint mechanism portion having an opening ring means capable of closing the opening / closing valve corresponding portion by detaching the male joint member from the female joint member by plug-out against the elastic force of the valve opening position holding means And a restraining engagement cam pin that is always elastically pressed in the protruding direction, and restrains and holds the connection state by projectingly engaging the restraining engagement cam pin with the opening ring means at the valve opening position, The present invention is characterized in that a constraining / releasing mechanism section for releasing constrained holding by the operation of retracting the constraining engagement cam pin is incorporated.

Further, according to the present invention, in the structure of the plug-in connection type pipe joint device, the release ring means is a restraining edge formed by projecting on an inner peripheral surface of an end portion of the open ring member via a step portion. The engagement cam pin for restraint of the engagement restraint / restraint releasing means is elastically abutted and engaged with the restraining end edge of the release ring member at the time of opening the connection valve, and the release ring member is It is characterized in that it has an engaging cam surface which is retained in the valve open position and is retracted in the anti-projection direction when the valve is closed so as to release the constraint of the open ring from the outside. .

[0007]

Therefore, in the plug-in connection type pipe joint device of the present invention, the plug-in of the male joint member with respect to the female joint member is kept in the non-connection closed state by the valve closing position holding means of the opening / closing valve mechanism. By the connection, the opening / closing valve equivalent part of the opening / closing valve mechanism part is opened, and the connected valve open state is engaged and held by the operation cam means and the valve opening position holding means included in the opening ring means of the joint mechanism part. And is restrained by the restraining engagement cam pin of the restraint / release mechanism portion. Further, by operating the restraining engagement cam pin of the restraining / releasing mechanism portion while restraining and holding the valve opening position holding means of the joint mechanism portion in the connection open state, the opening ring means of the joint mechanism portion is operated. Is released, and by operating the release ring means in the released state, the engagement and holding with respect to the male joint member is released, and the male joint member is plugged out.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, different embodiments of the plug-in connection type pipe joint device according to the present invention will be described in detail with reference to FIGS.

FIGS. 1 to 3 show a plug-in connection type pipe joint device to which an embodiment of the present invention is applied.
Is a valve-closed state in which the male joint member is connected to the female joint member in the pipe joint body, and the valve is opened by connecting and restraining the male joint member to the upper half. Fig. 2 is an overall side view showing a valve closed state (non-engagement / non-restraint) in the lower half, respectively. Fig. 2 is an overall side view showing the valve closed state (upper half) and the valve closed state (lower half) in Fig. 1. FIG. 3 is a vertical cross-sectional view.
It is a cross-sectional view which shows the engaging cam pin corresponding part for restraint which took out the open ring member of the pipe fitting device same as the above.

In the construction of the embodiment apparatus shown in FIGS. 1 to 4, the plug-in connection type pipe joint device is provided with a pipe joint main body A and is incorporated in the pipe joint main body A to open and close a flow path. The opening / closing valve mechanism section B and the joint mechanism section C for connecting the external male joint member 101 by plug-in connection
And a restraining / releasing mechanism section D for restraining and holding the connection valve open state. In this case, the male joint member 10 is provided.
For No. 1, a tip connecting portion 103 having a connection internal flow channel 102 and for connecting to a female joint member described later.
And an engagement circumferential groove 104 for restraining and holding the connection ball at the connection valve opening position by each engagement ball.

The pipe joint main body A has a cylindrical main body member 11, a valve seat member 21, and a mounting member 31.
Each of these members is integrally connected as a whole, and has a main body member 11 common to the inside in the axial direction, and the secondary internal flow passage 10a on the valve seat member 21 side and the mounting member 31. And the primary side internal flow channel 10b on the side.

On the outer peripheral surface side of the main body member 11, from the side corresponding to the connection end (hereinafter referred to as front side or front end) to the mounting end side (hereinafter referred to as rear side or rear end), Ring groove 1 for engaging the retaining ring 13
2. A step portion 15 and a second sliding surface 16 are formed with the first sliding surface 14 separated from the ring groove 12.

In the body corresponding to the rear side of the ring groove 12, ball holes 17 penetrating the inner and outer peripheral surfaces are formed at a plurality of angular positions at equal angular intervals, and each ball hole 1 is formed.
Engaging balls 18 that can selectively project to either side of the inner or outer peripheral surface are loosely fitted in the inside of each of the engaging balls 18.
With respect to (1), as will be described later, when the connection valve is opened, it is projected toward the inner peripheral surface side, and when not connected, it is projected toward the outer peripheral surface side. Also,
Pin holes 19 having a required depth are drilled at positions facing each other on the second sliding surface 15.

On the other hand, the ball holes 17 are formed on the inner peripheral surface side.
The third sliding surface 20 having a predetermined width is interposed from the rear end of the valve seat member 21, and the protruding portion 22 of the valve seat member 21 is fixed to the rear side of the mounting space portion 15. Seal ring 32 between the outer peripheral surface of the valve seat member 21 and
The mounting member 31 sealed with is fixedly screwed.

The valve seat member 21 has the third sliding surface 2
It has a fourth sliding surface 23 that extends to the front side in parallel with 0, and forms a valve seat surface 24 that is tilted inward toward the axial center on the rear side.

The on-off valve mechanism portion B and the joint mechanism portion C are
A cylindrical female joint member 41 is provided in common to each of these mechanical portions, and the external male joint member 101 is plug-in connected to the female joint member 41 from the front end side. And disconnect the plug-out. Separately, the former opening / closing valve mechanism portion B is configured to have a push spring 51 as a valve closing position holding means, and the latter joint mechanism portion C is provided with an operating cam portion 71 as an operating cam means and a valve opening position. It is configured to have an open ring member 61 as an open ring means including a pressing spring 81 as a holding means.

The female joint member 41 is the valve seat member 2
1 is made slidable directly on the third sliding surface 20 of the body member 11 via the pressing spring 51 between the protruding portion 22 and the fourth seat portion 21 of the valve seat member 21. Sliding surface 23
It is slidably fitted in through the seal ring 42, and is constantly urged in the valve closing direction by the pushing spring 51.

In the body portion on the rear side, a plurality of communication openings 43 are formed so as to occupy a required area (area corresponding to the total flow rate), and the valve is provided at the rear end separating the communication openings 43. An on-off valve corresponding portion 44 around which a seal ring 45, which is always seated by the elastic force of the pushing spring 51, is provided on the valve seat surface 24 of the seat member 21, is further provided. Further, the male joint member 101 is provided. Is formed with an abutting step portion 46 on the edge surface on the front side inner circumference for receiving and abutting the tip connection portion 103 of the above, and the outer peripheral surface of the receiving tip section is sealed on the front side inner peripheral surface. A seal ring 47 is provided around the seal ring 47.

The opening ring member 61 has an operating cam surface 72 and a pressing cam which are inwardly inclined toward the axial center of the operating cam portion 71 sequentially from the front side to the rear side on the inner peripheral surface side. A surface 73, a fifth sliding surface 62, and a restraining edge 63 are formed on each of them, and a pressing cam surface 73 is formed on the first sliding surface 14, and a pressing cam surface 73 is formed on the second sliding surface 16. The fourth sliding surface 62 is in contact with each other on the outer peripheral surface, and is slidably fitted between the rear end of the pressing cam surface 73 and the front end of the step portion 15 via the pressing spring 81. Therefore, the pressing spring 81 constantly urges the engaging ball 18 to press it in the engaging direction.

Thus, the female joint member 4 having the above structure
1 and the release ring member 61, the male joint member 101 is plugged in against the elastic force of the push spring 51 (corresponding to the state of the upper half portion in FIG. 2).
In the above, the on-off valve corresponding portion 44 is separated from the valve seat surface 24 of the valve seat member 21 and is projected into the primary side internal flow path 10b together with each communication opening 43. The primary-side internal flow channel 10b, and thus the connection internal flow channel 102 and the secondary-side internal flow channel 10a, are mutually communicated through the respective communication openings 43, that is, here, the valve is opened as expected. At the same time, the elastic force of the push spring 81 causes the engagement balls 18 to fall into the engagement peripheral groove 104 and engage with each other, thereby maintaining the state. On the other hand, on the other hand, prior to the plug-out detachment, the push-out spring 51 pushes the push-out force (in other words, with the plug-in inserted, this corresponds to the lower half of FIG. 2). ), In accordance with the operation of the restraint / release mechanism section D described below,
The on-off valve corresponding portion 43 is seated on the valve seat surface 24 of the valve seat member 21 by the elastic force of the push spring 51, and draws each communication opening 43 into the secondary side internal flow passage 10a. The primary-side internal flow channel 10b and the secondary-side internal flow channel 10a are blocked, that is, here, the valves are closed as expected.

The restraint / release mechanism section D is constituted by a restraint engagement cam pin 91 having an engagement cam surface 92 formed on the surface thereof.
It is fitted in the respective pin holes 19 on the sliding surface 15 of the open ring member 61 so as to be able to be elastically protruded at all times via the push spring 93, and engages and releases the restraint edge 63 of the release ring member 61. The half surface of the engagement cam surface 92 on the side of the restraint edge 63 is an engagement restraint surface 92a, and the other half surface is a restraint release surface 92b.

Therefore, in the case of the restraint / release mechanism section D having the above-mentioned structure, the male joint member 101 abuts against the female joint member 41 in the non-connection closed state shown in the lower half of FIG. The female joint member 41, which is plugged in until it abuts against the shaft 46, is not connected itself, and is elastically pressed in the non-connection valve closing direction by the push spring 51, is used for the engagement balls 18 in the ball holes 17. Are pushed out to the outside, and each of the engagement balls 18 has a push spring 81 at the non-connection position.
Opening ring member 61 that is repressed in the connecting direction by
Of the engaging cam pin 72 is pressed against the operating cam surface 72 and is pressed inward.
The side is pushed by the fifth sliding surface 62 of the open ring member 61, so that the side is entirely immersed in the pin hole 19, and the restraint release surface 92b side is covered with the restraining edge 63 to the outside.

Here, when the male joint member 101 is pushed in the connecting direction against the elastic force of the pushing spring 51 in the non-connection closed state, as described above, the female joint member is pressed. When the valve is opened at 41, the opening ring member 6 is pressed by the elastic force of the pushing spring 81 in accordance with the operation.
1 moves in the connecting direction, and at the valve open position, as shown in the upper half of FIG.
Is dropped into the engagement peripheral groove 104 of the male joint member 101 and engaged therewith, and the engagement state is held by the pressing cam surface 73 of the release ring member 61. On the other hand, the movement of the release ring member 61 causes the engagement cam surface 92 of the engagement cam pin 91 for restraint to slightly project from the inside of the pin hole 19 by the elastic force of the push spring 93, and the restraint release surface 92b side is exposed to the outside. The engagement restraint surface 92a side is abutted and restrained by the restraint edge 63 of the release ring member 61, whereby the release ring member 61 is restrained.
Inoperable. That is, in this way, the connection open state is restricted and maintained.

Next, in the restrained connection valve open state, the restraint release surface 92b exposed to the outside of the engagement cam surface 92 of the restraint engagement cam pin 91 is used with a fingertip or a jig or the like. While pushing in against the elastic force of the push spring 93, the release ring member 61 is pushed toward the rear side against the elastic force of the push spring 81, that is, the engaging cam pin 9 for restraint.
The female joint member 41 is always elastically pressed in the valve closing direction by the pushing spring 51 by moving to the 1st side.
In order to ensure that each of the engaging balls 18 is formed by the engaging circumferential groove 104 having the tapered cam surface of the male joint member 101,
Is again pushed out to the closed state before the operation, and in this state, the male joint member 101
It becomes possible to disconnect the plug-out. That is, in this way, the non-connection valve closed state is again restrained and maintained.

[0025]

As described above in detail with reference to the embodiments,
According to the present invention, an opening / closing valve for opening and closing the internal flow path of the pipe joint body is provided, and with respect to the female joint member provided in the internal flow path, an external male joint member is plugged in to open the valve,
In a plug-in connection type pipe joint device for disconnecting and closing the plug-out, the plug-in connection of the male joint member to the female joint member is kept in the non-connection closed state by the valve closing position holding means of the opening / closing valve mechanism. The opening / closing valve equivalent portion of the opening / closing valve mechanism section is opened by the above, and the connection valve opening state can be engaged and held by the operation cam means and the valve opening position holding means included in the opening ring means of the joint mechanism section, and At the same time, it can be restrained by the restraining engagement cam pin of the restraining / releasing mechanism, and the restraining / releasing mechanism can be restrained while being held in the connection open state by the valve opening position holding means of the joint mechanism. By operating the engaging cam pin, the restraint of the joint mechanism portion with respect to the release ring means can be released, and by operating the release ring means in the released state, the engagement holding with respect to the female joint member is released. This has the advantage of enabling the plug-out of the male joint member to be released, and in particular, the engaging cam pin for restraint as a restraint / release mechanism portion for restraining and releasing the joint mechanism portion, its accompanying structure, and eventually The restraining / releasing mechanism itself can be extremely simplified, and the operation itself is also easy.

[Brief description of drawings]

FIG. 1 is a view showing a state in which a valve opening state by connecting and restraining a male joint member to a female joint member in a plug-in connection type pipe joint device to which an embodiment of the present invention is applied is held in the upper half portion. FIG. 3 is an overall side view showing the valve closed state (valve closed state by insertion non-engagement / non-restraint of the male joint member) in which the lower part has been released.

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) in FIG.

FIG. 3 is a transverse cross-sectional view showing a portion corresponding to the engaging cam pin for restraint in which the release ring member of the pipe coupling device is taken out.

[Explanation of symbols]

 A pipe joint body B open / close valve mechanism unit C joint mechanism unit D restraint / release mechanism unit 101 male joint member 102 connection internal flow passage 103 tip connection portion 104 engaging circumferential groove 10a secondary side internal flow passage 10b primary side inside Flow path 11 Main body member 12 Ring groove 13 Stop ring 14 First sliding surface 15 Step portion 16 Second sliding surface 17 Ball hole 18 Engaging ball 19 Pin hole 20 Third sliding surface 21 Valve seat member 22 Protruding part 23 Fourth sliding surface 24 Valve seat surface 31 Mounting member 32 Seal ring 41 Female joint member 42 Seal ring 43 Communication opening 44 Open / close valve equivalent part 45 Seal ring 46 Pushing step part 47 Seal ring 51 Push spring 61 Release ring member 62 Fifth sliding surface 63 Open circumferential groove 64 Restraint edge 71 Actuating cam portion 72 Actuating cam surface 73 Pushing cam surface 81 Pushing spring 91 Restraint Engagement cam pin 92 engagement cam surface 92a engagement restraint surface 92b restraint release surface 93 push spring

Claims (2)

[Claims] 1. An on-off valve for opening and closing an internal flow path of a pipe joint body, wherein the female joint member is provided in the internal flow path,
A pipe joint device for opening an external male joint member by plug-in connection and opening and closing the plug-out member, wherein the pipe joint body has an opening / closing valve equivalent portion for opening / closing the internal flow path. And an on-off valve mechanism section including a valve-closing position holding means for constantly elastically pressing the on-off valve corresponding portion toward the valve closing position side,
With the opening of the opening / closing valve corresponding portion by the plug-in connection of the male joint member to the female joint member against the elastic force of the valve closing position holding means, the male joint member is restrained in the open position. And a male mold from the female joint member that opposes the elastic pressure of the valve opening position holding means. The joint mechanism portion is provided with an opening ring means for closing the opening / closing valve equivalent portion by detaching the joint member from the plug-out, and the restraining engagement cam pin is always elastically pressed in the protruding direction. A restraining / releasing mechanism portion for restraining and holding the connected state by projectingly engaging the restraining engagement cam pin with the opening ring means at the valve position, and canceling the restrained holding by the retracting operation of the restraining engagement cam pin. Characterized by being built in Plug-in connection type pipe coupling apparatus. 2. The release ring means has a restraining edge formed on the inner peripheral surface of the end portion side of the release ring member via a step portion, and the restraining engagement of the engaging restraint / restraint releasing means. The cam pin elastically abuts and engages with the restraining edge of the opening ring member when the connection valve is opened, restrains and holds the opening ring member in the valve opening position, and in the anti-projection direction when the valve is closed. 2. An engagement cam surface which is immersible and which is operable from the outside so as to release the restraint of the release ring.
The plug-in connection type pipe joint device described in.