JP2803988B2 - Fluid distribution fittings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid driving device such as a tool driven by a fluid such as an air driver, an air grinder, an air drill, an air nipper, a spray gun, a sprayer, an air vise, an air duster or an air pressure gauge. The present invention relates to a fluid distribution joint used for connecting a pipe and a hose or a joint between a hose and a hose when connecting a fluid supply hose.

[0002]

2. Description of the Related Art Conventionally, there is a joint as shown in FIG. 14 used for connecting an air supply hose to an air tool. In the figure, a joint 61 includes a socket 62 and a plug 63 inserted into and connected to the socket 62. The socket 62 includes a socket body 64 and a socket adapter 65, has a built-in opening / closing valve 66, and has a ball lock mechanism 67. One end of a hose is connected to the socket adapter 65, and the other end of the hose is connected to a compressor. The plug 63 is connected to the air tool directly or via a pipe.

The opening / closing valve 66 includes a valve body 68 fitted inside the socket 2 so as to be movable back and forth, a packing 69 sandwiched and fixed between the socket body 64 and the socket adapter 65, and a valve spring 70. Become. Valve 6
An air passage 7 of the plug 63 has an opening at the rear.
An air flow path 72 communicating with No. 1 is formed, and a through hole 73 communicating with the inside of the socket adapter 65 is formed.

[0004] A spring receiving portion 75 projecting toward the inner peripheral surface of the socket adapter 65 is provided on the head 74 of the valve body 68 over the entire periphery, and a valve spring 70 is formed on the inner peripheral surface of the socket adapter 65. Spring seat 7
6 and a spring receiving portion 75 of the valve body 68 are interposed in a compressed state. When the plug 63 is not connected, the valve body 68 is urged rearward by the valve spring 70 so that the spring receiving portion 75
Abuts against the valve seat 77 on the front surface of the packing 69, where the flow of compressed air is shut off. Also, by inserting the plug 63 into the socket 62 from behind, the valve body 68 is pushed forward by the plug 63, the spring receiving portion 75 is separated from the valve seat 77, and compressed air from the compressor is
Outer peripheral surface of spring receiving portion 75 and socket adapter 65
Through the through hole 73 and the air flow path 72 to the air flow path 71 of the plug 63.

[0005]

In the above-mentioned prior art, the spring receiving portion 75 is provided on the head 74 of the valve body 68 all around.
, The plug 62 is inserted into the socket 62.
When 3 is connected, the compressed air from the compressor is
Outer peripheral surface of spring receiving portion 75 and socket adapter 65
In order to increase the air flow rate, the gap between the outer peripheral surface of the spring receiving portion 75 and the inner peripheral surface of the socket adapter 65 must be large. Therefore, there is a problem that the diameter of the socket 62 becomes large and the socket 62 becomes large.

Further, the compressed air is allowed to flow from the space between the spring receiving portion 75 and the packing 69 to the air passage 72 of the valve body 68 through a through hole 73 formed in the valve body 68. In this case, too, in order to enlarge the through hole 73 to increase the flow rate, there is a problem that the diameter of the valve body 68 becomes large, the diameter of the socket 62 becomes large, and the size becomes large.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a fluid flow joint that does not increase in size even if the flow rate is increased or that can be made more compact.

[0008]

The technical measures taken by the present invention to achieve the above object include a socket 2 and a plug 3 inserted and connected to the socket 2.
In addition, a fluid communication hole 8 is formed in which the non-plug connection side communicates with the fluid supply source, and the fluid connection hole 8 communicates with the fluid connection hole 51 formed in the plug 3 on the plug connection side.
When the plug 3 is not connected, it is urged in the fluid flow direction by the valve spring 15 to come into contact with the valve seat 33 and the plug 3
At the time of connection, in the fluid communication joint provided with the valve element 13 which is pressed by the plug 3 and separated from the valve seat 33 to block and allow the flow of the fluid, the valve element 13 is provided with a fluid communication hole 8. multiple set only at intervals in the circumferential direction of the fluid flow holes 8 a protruding shaped spring receiver 31 toward the inner surface, in that as capable of flowing fluid from between the Sprint <br/> grayed receiving 31 is there.

The spring receiving portion 31 is located on the side in the fluid flow direction.
The seal portion 18 that is placed and abuts on the valve seat 33 is formed of an elastic body
And the diameter of the valve seat 33 is reduced in the fluid flow direction.
It is good to form in a taper shape. The seal portion 18 is formed by an O-ring, and the O-ring 18 is externally fitted to a fitting portion 20 provided on the head 21 of the valve body 16 on the side opposite to the fluid flow direction. It is preferable that the spring holder 17 provided with the spring receiving portion 31 is externally fitted to the shaft portion 19 provided on the direction side, and the O-ring 18 is sandwiched between the head portion 21 and the spring holder 17.

The spring receiving portion of the spring holder 17
31 in the radial direction as going in the anti-fluid flow direction
It is better to form it on a tapered surface that slopes
No. A support portion 22 movably supported in the fluid flow direction in the fluid flow hole 8 at an interval on the fluid flow direction side of the head 21.
And the head 21 and the support portion 22 are connected by a plurality of connection portions 23 arranged at intervals in the circumferential direction of the fluid communication hole 8, and the fluid penetrating the support portion 22 in the fluid communication direction is provided. The flow path 26 is formed, and the fluid flowing between the O-ring 18 and the valve seat 33 is passed from the connection portion 23 to the fluid flow path 26.
Through the fluid flow hole 51 of the plug 3 through the plug .

When the plug 3 is connected to the head 21 of the valve body 16
Surface facing the valve seat 33 in the fluid flow direction
Tape that moves inward in the radial direction according to
It is good to form it on the surface The socket 2 has a fluid flow hole 8
A ball 37 which protrudes into and out of the inside and engages with the plug 3 to prevent it from slipping out, and slides into the socket 2 so that the position can be changed between a position restricting the retraction of the ball 37 and a position allowing the retraction. A sleeve 39 which is freely fitted outside,
It is preferable that the sleeve 39 be provided with a lock ring 40 that selectively engages with a state where the sleeve 39 slides along with the sleeve 39 and a state where the sleeve 39 is restricted from sliding.

When the plug 3 is not connected, the ball 37
In the retracted position, and when the plug 3 is not connected,
It is pushed by the lug 3 and moves, and the ball 37
A plug guide 38 that allows engagement is integrated with the valve body 13.
It is good to accomplish.

[0013]

The fluid flows from between a plurality of spring receiving portions 31 which are protruded toward the inner surface of the fluid flow hole 8 and are provided at intervals in the circumferential direction of the fluid flow hole 8, so that the socket 2 is provided to increase the flow rate. When the gap between the spring receiving portion 31 and the inner surface of the fluid communication hole 8 is reduced, the size is reduced.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a joint used when connecting a compressed air supply hose to an air tool such as an air nipper.
And a plug 3 inserted into the socket 2 and connected thereto.

The socket 2 has a cylindrical socket body 4, and a female thread portion 5 is formed on the front end side (the left side in FIGS. 1 and 2) of the socket body 4.
A male thread portion 7 formed on the outer peripheral surface on the rear end side of the socket adapter 6 is screwed into the female thread portion 5. The socket adapter 6 is also cylindrical, and the hole inside the socket body 4 and the hole inside the socket adapter 6 constitute a fluid passage hole 8 penetrating in the front-rear direction.

A front end side of the socket adapter 6 is a hose connection portion 9, and a male screw portion 10 is formed on a rear outer peripheral surface of the hose connection portion 9, and the male screw portion 10 is externally fitted to the hose connection portion 9. A nut body 11 for screwing the hose to be removed is screwed. The hose connected to the hose connection part 9 is connected to a discharge part of a fluid supply source such as a compressor, and the fluid communication hole 8 is communicated with the fluid supply source.

The connection structure of the socket 2 to the fluid supply source side may be configured so that a male screw or a female screw can be connected so that the socket 2 can be directly connected to a discharge portion or a pipe of the fluid supply source. Other hose connection structures may be employed. An opening / closing valve 12 is built in the socket 2. The opening / closing valve 12 includes a valve body 13 fitted inside the fluid communication hole 8 so as to be movable in the front-rear direction, a ring body 14 fixed in the fluid communication hole 8, and a coil spring for urging the valve body 13. It is mainly composed of a valve spring 15.

As shown in FIG. 3, the valve body 13 comprises a valve body 16, a spring holder 17, and an O-ring 18. The valve body 16 includes a shaft portion 19 at a front portion, and a fitting portion 20 to which the O-ring 18 is fitted is formed behind the shaft portion 19, and a front end side behind the fitting portion 20. A conical head 21 that is larger in diameter than the fitting portion 20 and that tapers rearward is formed.

At the rear of the conical head 21, there is provided a substantially columnar support portion 22 which is located at an appropriate distance and which is internally slidably supported in the hole inside the socket body 4 so as to be slidable in the front-rear direction. As shown in FIG. 4, the conical head 21 and the supporting portion 22 are connected by three connecting portions 23 arranged at substantially equal intervals in the circumferential direction. A circumferential groove 25 into which an O-ring 24 is fitted is formed on the outer peripheral surface of the support portion 22, and a stepped fluid flow path 2 having a large rear end side is formed in the support portion 22.
6 is formed in the front-rear direction, and a fitting groove 28 in which an O-ring 27 is fitted is formed at the rear end of the fluid flow path 26.

The spring holder 17 has a conical portion 29 whose rear end side is larger in diameter than the fitting portion 20 and is tapered forward, and is located on the outer peripheral surface of the conical portion 29 at equal intervals in the circumferential direction. A protrusion 30 is provided, and a spring receiving portion 31 protruding radially outward, that is, toward the inner surface of the fluid communication hole 8 is provided at a rear portion of the protrusion. Also,
The spring holder 17 is formed with a fitting hole 32 that is fitted to the shaft portion 19 of the valve body 16.

Then, the valve body 13 is assembled by externally fitting the O-ring 18 to the fitting portion 20 and externally fitting the fitting hole 32 of the spring holder 17 to the shaft portion 19.
Is held between the conical heads 21 and 29. Further, the ring body 14 is externally fitted to the three connecting portions 23 of the valve body 16 so as to be relatively movable in the front-rear direction, and a tapered valve seat 33 whose diameter is reduced rearward is formed at the front part. The valve spring 15 is compressed and interposed between a spring receiving seat 34 having a stepped central portion in the front-rear direction of an inner hole of the socket adapter 6 and the spring receiving portion 31 of the spring holder 17. .

The open / close valve 12 is assembled in the following manner. That is, the valve body 16 is inserted into the socket body 4 from the front end opening with the ring body 14 fitted outside, the valve spring 15 is inserted into the socket adapter 6 from the rear end opening, and the male screw portion 7 of the socket adapter 6 is inserted into the socket. It is screwed into the female thread part 5 of the body 4. At this time, the ring body 14 is sandwiched and fixed between the stopper part 35 having a stepped rear portion of the internal thread part 5 of the hole inside the socket body 4 and the rear end face of the socket adapter 6.

The socket body 4 is provided with a ball lock type retaining mechanism 36. This retaining mechanism 3
Reference numeral 6 includes a steel ball 37, a plug guide 38, a sleeve 39, a lock ring 40, a ball guard 41, and the like. As shown in FIG.
7 are inserted from the outside into the radially inwardly tapered hole 42 formed at a plurality of holes formed at equal intervals in the circumferential direction at the rear end side of the socket body 4 so as to extend inward in the radial direction. Part of the inner hole is freely movable.

The plug guide 38 is formed in a tubular shape and is fitted inside the socket body 4 so as to be movable back and forth from a front end opening, and the front end face is in contact with the rear end face of the valve body 16. The outer peripheral portion front portion is a large-diameter portion 43 that contacts a step portion 44 formed in front of the tapered hole 42 on the inner peripheral surface of the socket body 4. Further, the rear portion of the inner peripheral surface is formed as a tapered surface having an enlarged diameter toward the rear.

The sleeve 39 is formed in a tubular shape, and is externally fitted to the socket body 4 so as to be movable back and forth from the rear end side. The sleeve 39 is formed with a ridge 45 at the front of the inner peripheral surface, and at the rear of the inner peripheral surface, As shown in FIG. 7, three long engagement grooves 46 and three short engagement grooves 47 are alternately formed at equal intervals in the circumferential direction. A sleeve spring 48 made of a coil spring is interposed between the front portion of the inner peripheral surface of the sleeve 39 and the outer peripheral surface of the socket body 4 in a compressed manner, and the sleeve 39 is urged rearward.

The lock ring 40 is formed in a cylindrical shape,
Three engagements are selectively fitted to the long engagement groove 46 and the short engagement groove 47 of the sleeve 39 on the rear end side of the socket body 4 so as to be freely movable back and forth in front of the sleeve 39 and to the rear end side. Claws 49 are protrudingly provided. A locking spring 50 made of a coil spring is interposed between the front part of the inner peripheral surface of the lock ring 40 and the outer peripheral surface of the socket body 4 in a compressed manner, and the lock ring 40 is urged rearward.

The ball guard 41 is externally fitted and fixed to the rear end of the socket body 4, and the sleeve 39 is prevented from coming off. The plug 3 is formed in a tubular shape, the inner peripheral side is a fluid communication hole 51 communicating with the fluid communication hole 8 of the socket 2, and the rear portion has a hose connection structure similar to the front portion of the socket adapter 6. The hose connected to the rear is connected to an air tool. The front part of the outer peripheral portion of the plug 3 includes a small-diameter portion 52 on the front side and a large-diameter portion 53 on the rear side.
A peripheral groove 54 is formed on the outer peripheral surface of the.

In the above configuration, when the plug 3 is not connected, as shown in FIG. 2, the valve element 13 is biased by the valve spring 15 and is located at the rear position. It comes into contact with the seat 33, where the compressed air from the compressor is shut off. Further, the steel ball 37 is retracted from the inner peripheral surface of the socket body 4, and the movement of the steel ball 37 to the inner peripheral surface of the socket body 4 is restricted by the rear portion of the plug guide 38.

Further, the sleeve 39 and the lock ring 4
0 is located at the front position against the urging force of the sleeve spring 48 and the locking spring 50,
The forward movement of the sleeve 39 and the like is regulated by the steel ball 37 protruding from the tapered hole 42 abutting on the ridge 45 of FIG. At this time, as shown in FIG.
The engagement claw 49 of the lock ring 40 is fitted in the long engagement groove 46 of the sleeve 39.

When the plug 3 is inserted into the fluid flow hole 8 of the socket 2 from behind, the small-diameter portion 52 at the front of the plug 3 passes through the plug guide 38 and supports the valve body 16 as shown in FIG. Inserted into the rear part of the fluid flow path 26 of the part 22,
The valve body 13 is moved forward against the urging force of the valve spring 15. As a result, the O-ring 18 separates from the valve seat 33 and the opening / closing valve 12 is opened, and the compressed air from the compressor passes between the spring receiving portions 31 and between the O-ring 18 and the inner peripheral surface of the socket adapter 6, the valve. Body 16
Between the conical head 21 and the valve seat 33 of the valve body 16
During the period 3, the fluid flows into the fluid flow hole 51 of the plug 3 via the fluid flow path 26 of the valve body 16, and is supplied to the air tool via a hose.

On the other hand, the plug guide 38 is pushed forward by the large diameter portion 53 at the front part of the plug 3 and
A part of the protrusion 7 projects into the inner peripheral side of the socket body 4 and fits into the peripheral groove 54 of the plug 3, and the regulation by the steel ball 37 is released, and the sleeve 39 and the locking spring 50 are urged by the urging force of the sleeve spring 48 and the locking spring 50. The lock ring 40 moves backward until it comes into contact with the ball guide 41, and the ridge 45 contacts the outside of the steel ball 37. This restricts the movement of the socket body 4 outward in the radial direction, and prevents the plug 3 from coming off. Is done.

Therefore, by simply inserting the plug 3 into the socket 2, the opening / closing valve 12 is opened and at the same time, the plug 3 is prevented from being removed from the socket 2. Done. In the above state, when the sleeve 39 is moved forward to a position where the protruding ridge portion 45 comes off the steel ball 37, the regulation of the movement of the steel ball 37 in the radially outward direction of the socket body 4 is released, and the removal of the plug 3 is allowed. You.

When the plug 3 is connected, the lock ring 40 is moved forward to prevent the sleeve 39 from being moved inadvertently.
Then, as shown in FIGS. 10 and 11, the lock ring 40 is rotated by a predetermined angle (30 ° in the embodiment) to fit the engagement claw 49 into the short engagement groove 47. In this state, the locking spring 50 is compressed to such an extent that the lock ring 40 can move forward only by an amount that allows the engagement claw 49 to be disengaged from the short engagement groove 47.
9 is only allowed to move a little forward, so that the ridge 45 does not come off the steel ball 37 and the plug 3 does not come off accidentally.

FIGS. 12 and 13 show the connection according to the embodiment.
Shows an improved version of the components of hand 1, specifically
A plug guide 38 integrally formed with the body 16;
The fitting groove 28 formed on the inner peripheral surface of the support portion 22 is
It is processed after forming the plug 16 and the plug guide 38.
Thus, the plug guide 38 is formed integrally with the valve body 16.
For example, connect the hose connected to the fluid supply source to the socket 2.
While plug 3 is not connected.
Where body sources are distant or invisible
In this case, insert the rod from the rear end opening of the socket 2
16 is pushed forward, and the compressed fluid reaches the socket 2.
May have been reached, in this case
When the body 16 and the plug guide 38 are separate bodies, the valve body 1
6 and the plug guide 38 are separated from each other, and
O-ring 27 may come off the fitting groove 28
Because.

[0035]

According to the present invention, the socket 2 includes the socket 2 and the plug 3 inserted and connected thereto.
In addition, a fluid communication hole 8 is formed in which the non-plug connection side communicates with the fluid supply source, and the fluid connection hole 8 communicates with the fluid connection hole 51 formed in the plug 3 on the plug connection side.
When the plug 3 is not connected, it is urged in the fluid flow direction by the valve spring 15 to come into contact with the valve seat 33 and the plug 3
At the time of connection, in the fluid communication joint provided with the valve element 13 which is pressed by the plug 3 and separated from the valve seat 33 to block and allow the flow of the fluid, the valve element 13 is provided with a fluid communication hole 8. multiple set only at intervals in the circumferential direction of the fluid flow holes 8 a protruding shaped spring receiver 31 toward the inner surface. Thus capable of flowing fluid from between the Sprint <br/> grayed receiving 31,
The fluid flows from between the plurality of spring receiving portions 31 provided in a protruding shape toward the inner surface of the fluid flow hole 8 and spaced apart in the circumferential direction of the fluid flow hole 8, so that the flow rate increases without increasing the size of the socket 2. And the spring receiving portion 31
A gap between the fluid flow hole 8 and the inner surface of the fluid flow hole 8 can be reduced, thereby achieving compactness.

In such a way as to flow from between the spring receiving portions 31
Then, the spring receiving portion 31 is located on the fluid flow direction side.
Between the seal portion 18 contacting the valve seat 33 and the valve seat 33
Although the amount is reduced, the seal portion 18 is made of an elastic material.
And reducing the diameter of the valve seat 33 in the fluid flow direction.
By forming the tapered shape, the sealing portion 18
A sufficient contact amount with the valve seat 33 can be obtained.

The seal portion 18 is constituted by an O-ring,
The O-ring 18 is externally fitted to a fitting portion 20 provided on the head 21 of the valve body 16 on the side opposite to the fluid flow direction, and a spring 19 is attached to a shaft portion 19 provided on the side of the fitting portion 20 on the side opposite to the fluid flow direction. The spring holder 17 provided with the receiving portion 31 is externally fitted,
By configuring the O-ring 18 to be sandwiched between the head 21 and the spring holder 17, the seal portion, that is, the O-ring 18 is moved from the projecting end of the spring receiving portion 31 to the radially inward side of the fluid communication hole 8. It can be greatly moved and is easy to assemble.

Spring receiving portion of spring holder 17
31 in the radial direction as going in the anti-fluid flow direction
To a tapered surface that slopes so that it moves
Therefore, the fluid is smoothly guided between the spring receiving portions 31.
The pushing force of the plug 3 into the socket 2
Can be reduced. A support portion 22 movably supported in the fluid flow direction is disposed in the fluid flow hole 8 at an interval on the fluid flow direction side of the head 21, and the head 21 and the support portion 22 are arranged around the fluid flow hole 8. Are connected by a plurality of connecting portions 23 arranged at intervals in the direction, and a fluid flow path 26 penetrating in the fluid flowing direction is formed in the support portion 22 so that the fluid flows between the O-ring 18 and the valve seat 33. The fluid to flow from between the connecting portions 23 to the fluid flow holes 51 of the plug 3 via the fluid flow path 26, and from between the O-ring 18 and the valve seat 33 to the fluid flow path 26 of the valve element 13. Since the hole does not pass through the through hole as in the conventional example but passes between the connecting portions 23, the opening can be made large and the flow rate can be increased without increasing the size of the socket 2.

When the plug 3 is connected to the head 21 of the valve body 16
Surface facing the valve seat 33 in the fluid flow direction
Tape that moves inward in the radial direction according to
By forming the valve seat 33 and the head 21 on the
The flow rate between them can be increased. The socket 2 has a fluid flow hole 8
A ball 37 which protrudes into and out of the inside and engages with the plug 3 to prevent it from slipping out, and slides into the socket 2 so that the position can be changed between a position restricting the retraction of the ball 37 and a position allowing the retraction. A sleeve 39 which is freely fitted outside,
By providing the sleeve 39 with the lock ring 40 that selectively engages with the state in which the sleeve 39 slides along with the sleeve 39 and the state in which the sleeve 39 is restricted from sliding, the plug 3 can be inadvertently detached. Absent.

[0040] socket 2 with connecting hose connected to a fluid supply source, in a case not connected to the plug 3, when located on or places invisible fluid source is in the direction of distance, The rod is inserted from the rear end opening of the socket 2 and the valve body 16 is pushed forward, so that the compressed fluid is
May be tried. In this case, when the valve body 16 and the plug 3 are not connected,
Holding the plug 37 in the retracted position, and
Is moved by being pushed by the plug 3 and the plug of the ball 37 is moved.
If the plug guide 38 that allows engagement with the plug 3 is separate, the valve body 16 and the plug guide 38 are separated from each other,
Although the O-ring 27 provided between the valve body 16 and the plug guide 38 may be separated from the fitting groove 28 by the compressed fluid , the plug guide 38 is formed integrally with the valve body 13.
By doing so, the above problem can be solved.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a joint according to the present invention.

FIG. 2 is a side sectional view of the socket according to the present invention.

FIG. 3 is an exploded side view of the valve body.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a front view of a spring holder.

FIG. 6 is an exploded side sectional view of the retaining mechanism.

FIG. 7 is a front view of the sleeve.

FIG. 8 is a rear view of the lock ring.

FIG. 9 is a view showing an unlocked state of a lock ring.

FIG. 10 is a diagram showing a locked state of a lock ring.

FIG. 11 is a side sectional view of the joint showing a locked state of the lock ring.

FIG. 12 is a half sectional side view showing an improved example of a joint.

FIG. 13 is a cross-sectional view taken along line BB of FIG.

FIG. 14 is a side sectional view showing a conventional joint.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Joint 2 Socket 3 Plug 8 Fluid flow hole 13 Valve body 15 Valve spring 16 Valve main body 18 O-ring 20 Fitting part 21 Conical head 22 Supporting part 23 Connecting part 26 Fluid flow path 31 Spring receiving part 33 Valve seat 37 Steel ball 39 sleeve 40 lock ring

Claims (8)

(57) [Claims] A socket (2) and a plug (3) inserted and connected to the socket (2). The socket (2) has an anti-plug connection side connected to a fluid supply source and a plug connection side connected to a plug (3). )), A fluid communication hole (8) communicating with the fluid communication hole (51) is formed. In the fluid communication hole (8), when the plug (3) is not connected, a valve spring (15) is provided. Is urged in the fluid flow direction to contact the valve seat (33), and when the plug (3) is connected,
In a fluid communication joint provided with a valve element (13) that is pressed by a plug (3) and separates from a valve seat (33) to shut off and allow fluid flow, a fluid communication hole is provided in the valve element (13). (8) a plurality set only the spring receiver (31) protruded toward the inner surface at intervals in the circumferential direction of the fluid flow holes (8), the spring receiver (3
1) A fluid distribution joint characterized in that a fluid can be circulated from between. 2. A fluid flowing direction of the spring receiving portion (31).
(18) a seal portion (18) located on the side and in contact with the valve seat (33)
Is formed of an elastic material, and the valve seat (33) is
Characterized in that it is formed in a tapered shape whose diameter is reduced toward
The fluid communication joint according to claim 1. 3. The seal portion (18) is formed by an O-ring.
The O-ring (18) is attached to the head of the valve body (16).
The fitting part (20) provided on the anti-fluid flow direction side of (21)
Externally fitting and anti-fluid flow direction of this fitting part (20)
The shaft part (19) provided on the side has a spring receiving part (31).
The spring holder (17) obtained above is fitted over the head (2
O-ring (1) with spring holder (17)
(8) The method according to (1), wherein
Is a fluid distribution joint according to 2. 4. A spring for a spring holder (17).
Along the anti-fluid flow direction between the receiving portions (31).
Formed on a tapered surface that is inclined so that it moves inward in the radial direction
The fluid flow joint according to claim 3, wherein 5. An interval is provided on the side of the head (21) in the fluid flow direction.
In the fluid flow hole ( 8) so as to be movable in the fluid flow direction.
Arrange the supported part (22) and support the head (21)
Part (22) and a gap in the circumferential direction of the fluid communication hole (8).
Are connected by a plurality of connecting portions (23) arranged in a horizontal direction.
And a fluid penetrating the support portion (22) in the fluid flow direction.
A flow path (26) is formed, and an O-ring (18) and a valve seat (3) are formed.
The fluid flowing between 3) flows from between the connecting portions (23).
The fluid flow hole (5) of the plug (3) passes through the body flow path (26).
4. The method according to claim 3, wherein the flow is configured to flow in 1).
Or the joint for fluid distribution according to 4. 6. A plug for a valve body (16) head (21).
(3) When connecting, the surface facing the valve seat (33)
Moves radially inward as it moves in the body circulation direction
Formed on a tapered surface that is inclined
The fluid distribution joint according to claim 5. 7. A fluid communication hole (8) in a socket (2).
The plug (3) protrudes so that it can come and go freely, and it is locked.
Ball (37) to lift and retreat of this ball (37)
The position can be changed between the position that regulates and the position that allows evacuation.
Slidably fitted to the socket (2)
Leave (39) and this sleeve (39)
(39) and the sleeve (3)
B) selectively engaging with the slide regulating state of 9);
A locking ring (40).
7. The fluid flow joint according to 1, 2, 3, 4, 5, or 6. 8. When the plug (3) is not connected,
Holding the plug (37) in the retracted position and disconnecting the plug (3)
Sometimes it is pushed by the plug (3) and moves,
A plug guy that allows engagement of the (37) with the plug (3)
(38) is formed integrally with the valve body (13).
The fluid according to claim 1, 2, 3, 4, 5, 6 or 7.
Distribution fittings.