JP2542709Y2 - Gas fittings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] The present invention relates to a gas connector which is composed of a socket and a plug, and is used by detachably connecting the socket and the plug.

[Prior Art] A gas connector A is formed by detachably connecting a socket 1 and a plug 2 as shown in FIGS.
A socket jacket 4 is fitted around the outer periphery of the socket body cylinder 3 of the socket 1, and the socket jacket 4 and the socket body cylinder 3
The operating ring 5 is slidably disposed between the two and is biased by a spring 6 in a direction in which the operating ring 5 projects. Operation ring 5
Has a large-diameter portion 7 and a small-diameter portion 8 on the inner periphery of the operating ring 5.
The step 9 between the large-diameter portion 7 and the small-diameter portion 8 is locked to the locking projection 10 at the outer peripheral end of the socket main body tube 3 in a state where is projected. The socket body cylinder 3 has a double structure of an outer cylinder 11 and an inner cylinder 12, and a moving body is provided between the outer cylinder 11 and the inner cylinder 12.
The movable body 13 is urged by a spring 21 in a direction in which the movable body 13 projects. A contact packing 14 is mounted on the distal end of the moving body 13, and a seal packing 16 is mounted between the base end of the moving body 13 and the spring receiver 15. The inner projection 17 is provided around the periphery. At the tip of the outer cylinder 11 of the socket body cylinder 3, there is provided a through hole 18 that opens in and out.
A locking ball 19 is rotatably mounted in this through hole 18,
When the socket 1 is not connected to the plug 2, the locking ball 19 is stopped by the moving body 13 so as not to fall inward, and the step 9 of the operation ring 5 is engaged with the locking ball 19.
At the center of the inner cylinder 12 of the socket body cylinder 3, a push rod 20 for pushing the valve element to open the valve element of the plug 2 is disposed so as to protrude from the inner cylinder 12. The distal end of the tube 12 is integrally connected by a plurality of connecting legs 22. At the base end of the socket body tube 3 is provided a connection tube portion 23 to which a rubber hose or the like is fitted and connected. A locking step 24 is provided around the outer periphery of the tip of the plug 2, and a valve element (opened in the plug 2) that is opened when pushed by the push rod 20 when the socket 1 is connected and closed otherwise. (Not shown). In connecting the socket 1 and the plug 2, the front end of the socket 1 is opposed to the front end of the plug 2, and the front end of the plug 2 is pushed into the outer cylinder 11 of the socket 1. Then, the moving body 13 is pushed by the tip of the plug 2 and the moving body 13 is retired, the locking ball 19 is locked on the locking step 24 of the plug 2, and the operation ring 5 is projected and the step 9 is moved. The step 9 is disengaged from the locking ball 19 and the locking projection is formed.
Lock to 10. On the other hand, the valve body of the plug 2 is pushed by the push rod 20 to open the valve body.
The gas flows through the inside. With the plug 2 and the socket 1 connected, the contact packing 14 at the tip of the moving body 13
Is brought into contact with the tip surface of the plug 2 to seal the gap. When disconnecting the connection between the socket 1 and the plug 2, the operating ring 5 is retired. Then, the locking ball 19 is moved to the large diameter portion 7 of the operation ring 3.
And the locking ball 19 is disengaged from the locking step 24,
The plug 2 is released by being pushed by the moving body 13 and the moving body 13 projects. At this time, the push rod 20 comes off the plug 2 and the valve body of the plug 2 is closed.

[Problem to be Solved by the Invention] By the way, if the gas passages in the socket 1 and the plug 2 have irregularities when the socket 1 and the plug 2 are connected, the stable passage of the gas will occur due to the eddy current generated in that portion. An obstructing element occurs, which causes a variation in the flow rate and a decrease in the flow rate. In the case of the above-mentioned conventional gas connector A, a recess is formed in a portion indicated by reference numeral A and a portion indicated by reference numeral B in FIG. 3, and a vortex is generated in the recess, which leads to a variation in flow rate or a decrease in flow rate. I have. Although there is no way in terms of the structure for detachably connecting the socket 1 and the plug 2 to the recessed portion indicated by reference numeral a, the removal of the recessed portion indicated by reference numeral B leads to considerable flow stability.

The present invention has been made in view of the above description, and an object of the present invention is to provide a gas connector capable of stably flowing gas by minimizing unevenness of a gas passage and suppressing eddy current. To offer.

[Means for Solving the Problems] In order to achieve the above object, a gas connecting device A according to the present invention is a gas connecting device in which a socket 1 and a plug 2 are detachably connected. 11 and inner cylinder
12 and a moving body 13 repelled toward the plug 2 is provided between the outer cylinder 11 and the inner cylinder 12, and the contact packing 14 at the tip of the moving body 13 is attached to the tip of the plug 2. And plug 2
A push rod 20 for pushing the valve body to open the valve body is provided so as to protrude from the center of the inner cylinder 12 toward the plug 2, and a front end of the inner cylinder 12 and a base end of the push rod 20 are connected by a plurality of connecting legs. A protruding cylindrical portion 25 is provided integrally protruding from the portion of the inner cylinder 12 connected to the connecting leg 22 toward the plug 2 so that the distal end surface of the protruding cylindrical portion 25 and the distal end surface of the plug 2 face each other. .

[Operation] A protruding cylinder portion 25 is provided which protrudes toward the plug 2 from a portion where the connecting leg 22 of the inner cylinder 12 is connected, and the distal end surface of the protruding cylindrical portion 25 and the distal end surface of the plug 2 are opposed to each other. A recess can be formed only between the distal end surface of the portion 25 and the distal end surface of the plug 2, and the concave portion of the portion indicated by the conventional symbol B can be eliminated. Thereby, unevenness in the gas passage is reduced and the gas flow becomes smooth.

FIG. 1 shows a state in which a socket 1 and a plug 2 of a gas connector A are connected. Since the structures of the socket 1 and the plug 2 are basically the same as those of the conventional example, detailed description will be omitted. The only difference from the conventional example is the tip of the inner cylinder 12 of the socket 1. The protruding cylindrical portion 25 protrudes from a portion of the inner cylinder 12 where the connecting legs 22 are connected. When the plug 2 is connected to the socket 1, the distal end surface of the protruding cylindrical portion 25 and the distal end surface of the plug 2 face each other. The inner surface of the inner cylinder 12 and the inner surface of the plug 2 are substantially flush with each other. Further, the inner periphery of the moving body 13 is flush with each other, and does not have the inner projection 17 as in the related art. Conventionally, a reinforcing ring 26 is embedded in a portion where the inner protrusion 17 is provided. In connecting the socket 1 and the plug 2, the front end of the socket 1 faces the front end of the plug 2, and the front end of the plug is pushed into the outer cylinder 11 of the socket 1.
Then, the moving body 13 is pushed by the tip of the plug 2 and the moving body
13 is retired, the locking ball 19 is locked to the locking step 24 of the plug, the operating ring 5 projects, the step 9 comes off the locking ball 19, and the step 9 engages with the locking projection 10. Stop. On the other hand, the valve body of the plug 2 is pushed by the push rod 20 to open the valve body, and the gas flows from the plug 2 through the inside of the inner cylinder 12 of the socket 1. 14 is brought into contact with the tip surface of the plug 2 to seal the gap. In the state where the plug 2 and the socket 1 are connected, the tip surface of the plug 2 and the tip surface of the protruding cylindrical portion 25 face each other at a portion indicated by reference numeral A, and a recess is formed. The portion where vortices and the like occur is reduced, and the gas flows stably. Socket 1
When the connection between the plug and the plug 2 is disconnected, the operation ring 5 is retired. Then, the locking ball 19 is fitted into the inner periphery of the large diameter portion 7 of the operation ring 3, and the locking ball 19 is disengaged from the locking step 24, and is pushed by the moving body 13 to release the plug 2 and the moving body. 13 protrudes, while the push rod 20 comes off the plug 2 and the plug of the plug 2 is closed.

[Effects of the Invention] In the present invention, as described above, a protruding cylinder portion is provided which protrudes toward the plug from a portion where the connection legs of the inner cylinder are connected, and the tip surface of the protruding cylinder portion and the tip surface of the plug are opposed to each other. Even when the push rod is fixedly provided with the connecting leg to the inner cylinder, a recess is formed in a portion where the distal end surface of the plug and the distal end surface of the protruding cylindrical portion face each other when the socket and the plug are connected. Is formed, the recess is not formed at the base of the connection leg due to the existence of the protruding cylindrical part as in the past, the unevenness of the gas passage is reduced, the eddy current is less likely to occur, and the gas is stable There is no danger that the flow will flow well and the flow rate will not vary or the flow rate will decrease.

[Brief description of the drawings]

FIG. 1 is a partially cutaway half sectional view of an embodiment of the gas connector of the present invention, FIG. 2 is a partially cutaway half sectional view of the same socket, FIG. 3 is a half sectional view of a conventional example, FIG. The figure is a half sectional view of a conventional socket, wherein 1 is a socket, 2 is a plug, 3 is a socket body cylinder, 11 is an outer cylinder, 12 is an inner cylinder, 13 is a moving body, 14 is a contact packing, 20 Is a push rod, 22 is a connecting leg, and 25 is a protruding cylinder.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Mitsuru Amami 1-152 Oka, Minami-shi, Minato-ku, Osaka-shi, Osaka Herman Co., Ltd. Showa 61-2598 (JP, Y2) Showa 61-11593 (JP, Y2)

Claims (1)

(57) [Scope of request for utility model registration] In a gas connector in which a socket and a plug are detachably connected, a socket body cylinder of the socket is a double cylinder of an outer cylinder and an inner cylinder, and a plug side is provided between the outer cylinder and the inner cylinder. The packing at the tip of the moving body is elastically contacted with the tip of the plug, and the push rod that opens the valve body by pressing the valve body of the plug projects from the center of the inner cylinder toward the plug side. A plurality of connecting legs integrally connect the front end of the inner cylinder and the proximal end of the push rod with a plurality of connecting legs, and provide a protruding cylindrical portion that protrudes toward the plug from a portion where the connecting legs of the inner cylinder are connected. A gas connector comprising a tip end face of a plug and a tip end face of a plug facing each other.