JPS5912472Y2 - pipe fittings - Google Patents

Description

[Detailed Description of the Invention] This invention particularly relates to a pipe joint that can automatically open the valve body and separate the socket and plug using pneumatic force.

Although many recent coolers and air conditioners are separate types with an indoor unit and an outdoor unit, running tests during the production process must be performed with both units connected.

However, since these units are individually transported by conveyor belt during the production process, for example, when testing indoor units,
If it was connected to an outdoor unit, work efficiency would be extremely poor, and in the worst case scenario, the production line would stop.

This invention eliminates these conventional inconveniences, makes it possible to efficiently perform running tests on cooler units, etc. without stopping the belt line, and makes it easy to separate from the test equipment even after the test is completed. The purpose is to make it possible to

Examples of this invention will be described below with reference to the drawings.

FIG. 1 shows a socket 40, and FIG. 2 shows a plug 50. First, the socket 40 will be explained.

Reference numeral 1 denotes a rear body having a threaded hole 2 at the center of the rear body, and a small-diameter blind cylindrical portion 3 at the front center of the rear body. A fluid passage hole 4 is provided to penetrate in the inner and outer circumferential directions.

Further, a locking flange 5 is formed on the outer periphery of the central portion of the rear body 1, and a rear cylinder having a locking portion 6 that engages with the locking flange 5 on the inner surface of the rear portion is formed on the central outer periphery of the rear body. 7 are airtightly fitted with an O-ring interposed therebetween and fixed with a stop ring 80, thereby fixing the rear body 1 and the rear cylinder 7.

Incidentally, the rear cylinder 7 and the rear body 1 may be integrally formed.

Furthermore, a threaded portion 8 is formed on the front outer periphery of this rear cylinder 7,
A cavity 9 is formed between the inner surface of the rear cylinder 7 and the small diameter cylinder part 3 of the rear body 1, and a first hole 10 communicating with one end of the cavity 9 is formed in the rear part of the rear cylinder 7. to drill.

11 is a front cylinder whose rear part is screwed into the threaded part 8 of the rear cylinder 7;
An insertion opening 12 is formed in the axial center of the tip, and a guide hole 14 with a slightly larger diameter is provided at the back of the insertion opening 12 through a sloped part 13, and a stepped part 15 is provided at the rear of this guide hole 14. Furthermore, a large-diameter chamber 16 is formed, and the large-diameter chamber 16 and the empty chamber 9 form a valve chamber in which a valve cylinder 20, which will be described later, is mounted.

17 is an annular groove provided in the stepped portion 15 of the front cylinder 11;
A second hole 18 is formed in communication with the groove 17.

Reference numeral 20 denotes a valve cylinder that is fitted onto the small diameter cylinder part 3 of the rear body 1 so as to be able to move back and forth, and has a sliding cylinder part 21 in surface contact with the small diameter cylinder part 3 at the front and rear parts. A valve pushing part 22 is formed in the center of the tip end surface of the valve pushing part 22, and an appropriate number of through holes 23 are formed around the valve pushing part 22.

Furthermore, a communication hole 24 is formed on the inner periphery of the substantially central portion of the valve cylinder 20, which communicates with the fluid passage "JL4" of the small diameter cylinder part 3.

Reference numeral 25 indicates an O-ring attached to the inner surface of the valve barrel 20 to airtightly seal the rear inner surface of the valve barrel 20, and reference numeral 26 indicates an O-ring of the small diameter cylinder portion 3 to airtightly seal the inner surface of the tip end of the valve barrel 20. An O-ring is attached to the outer periphery of the tip, and these two O-rings seal the front and rear portions of the through hole 4.

30 is a protrusion 31 on the rear outer periphery that contacts the inner surface of the chamber 16;
It is a movable cylinder whose inner periphery is fitted onto the sliding cylinder part 21 of the valve cylinder 20 so as to be able to move back and forth, and a plug 5 is attached to the tip of the movable cylinder 30.
The valve cylinder 20 has a reciprocating hole 32 that communicates with the insertion opening of the valve cylinder 20, and the inner surface of the approximately intermediate portion of the movable cylinder 30 has a hole 32 that engages with the tip surface of the sliding cylinder part 21 when the valve cylinder 20 is fully advanced. At the same time, a locking convex portion 33 for stopping the forward movement is provided in a protruding manner.

Furthermore, an O-ring 35 is formed on the outer periphery of the movable cylinder 30 and is positioned on the front side of this locking convex portion 33 and extends through a small hole 34 in the radial direction.
, 36 to airtightly seal the outer periphery of the movable cylinder 30.

An appropriate number of tapered holes 37 are formed in the inner peripheral surface of the insertion hole of the plug 50 of the movable cylinder 30 in the inner and outer peripheral directions, and a locking ball 38 is inserted into each of the tapered holes. 38 to form a locking mechanism for the plug.

Reference numeral 39 denotes a compression spring interposed between the valve cylinder 20 and the movable cylinder 30 on the outer periphery of the valve cylinder 20, and the valve cylinder 20 is urged backward and the movable cylinder 30 is urged forward by this spring.

41 is the front part of the empty chamber 9 partitioned by the valve cylinder 20 and the chamber 1;
This is a communication hole provided in the front cylinder 11 to communicate both the insides of the cylinder 6 with the atmosphere.

The plug 50 shown in FIG. 2 has a built-in cone-shaped valve body 51,
This plug 50 has a known structure in which a valve port 53 is closed from the inside by a compression spring 52, and the outer peripheral surface of this plug 50 has a tapered surface portion 5 approximately in the center thereof that presses the locking ball 38 of the socket 40.
4, and the locking ball 37 is provided behind this taper part.
A circumferential groove 55 is formed which engages 37.

56 is a tightening portion provided at the rear of the plug 50.

Next, the operation of the above embodiment will be explained.

When the plug 50 is inserted into the insertion opening of the movable barrel 30 of the socket 40, the tapered surface portion 54 engages with the locking ball 38 and moves the movable barrel 30 backward against the elastic force of the compression spring 39.

Therefore, locking ball 38. Once the plug 38 moves in the outer circumferential direction along the slope portion 13 and is further advanced until the tip of the plug 50 hits the locking convex portion 33, the circumferential groove 5 of the plug 50 is moved.
5 and the tapered hole 37 match, and the locking ball 38 fits into the circumferential groove 5.
5, the movable cylinder 30 moves forward together with the plug 50 due to the elastic force of the compression spring 39, and the locking ball 38 is again pressed by the slope portion 13 and completely engages with the circumferential groove 55.
The socket 40 and the plug 50 are connected.

Next, when air is supplied from a compressor (not shown) toward the IJLIO of the socket 40, the valve cylinder 20 moves forward against the elastic force of the compression spring 39, as shown in FIG. The valve pushing part 22 provided at the front of the sliding cylinder part 21 integrated with the valve cylinder 20 pushes the cone-shaped valve body 51 protruding forward of the plug 50, and the valve body 51 is pressed by the compression spring 52.
While retreating against the repulsive force of and opening the valve port 53,
A through hole 23 provided at the tip of the valve cylinder 20 communicates with the through hole 4 via a communicating hole 24, and can flow into the mutually connected plug 50 and socket 40 side.

Next, the valve cylinder 20 of the socket 40 and the valve body 51 of the plug 50
When closing the 17th L10 side, it is sufficient to cut off the supply of air from the compressor and return the 17th L10 side to atmospheric pressure.

That is, when the 17L10 side is brought into an atmospheric pressure state, the valve cylinder 20 is moved back by the elastic force of the compression spring 39, and the compressed air in the cavity 9 is discharged into the atmosphere from the first hole 10.

By retreating the valve cylinder 20, the through holes 4, 4 provided at approximately the tip of the small diameter cylinder part 3 are cut off from the through hole L23, and the socket 4
The fluid passage on the 0 side is closed.

At this time, on the other hand, the valve pushing part 22 provided at the tip of the sliding cylinder part 21 integrated with the valve cylinder 20 also retreats, so the valve body 51 is released from the valve pushing part 22 and is affected by the elastic force of the compression spring 52. The valve moves forward to close the valve port 53, and the fluid passage on the plug 50 side is also blocked.

When separating the socket 40 and plug 50, when compressed air is supplied into the chamber 16 from the second JL 18, the movable cylinder 30 retreats against the elastic force of the compression spring 39, and at this time, the lock is removed. The ball 38 is released from the tapered surface portion 13, but at this time, the plug 50 is moved into the socket by the negative pressure, as shown in FIG.
Become drawn inside.

However, inside the socket 40 there is a plug 50 and a movable cylinder 3.
A part of the air supplied from the second hole 18 enters the space 42 surrounded by the second hole 18 through the small hole 34 and actively separates the plug 50.

Although the embodiment has been described above, this invention consists of integrally fixing the rear cylinder 7 and the front cylinder 11 to the rear body 1 which has a blind small-diameter cylinder part 3 having an appropriate number of through holes 4 on the tip surface. , the rear cylinder 7 is provided with a first L10 that communicates with the inner and outer circumferences, and the front cylinder 11 is similarly provided with a 27th L18, and the through hole 4 is opened and closed in the rear cylinder 7. A valve cylinder 20 is housed so as to be movable back and forth, and a through hole 4 is formed in the front cylinder part 1 at the tip of the valve sleeve.
A through hole 23 communicating with the tip insertion port 12 of the valve pusher 2
2, a movable cylinder 30 is housed in the front cylinder 11 so as to be movable back and forth on the valve cylinder 20, and the tip of the movable cylinder 30 projects outward from the insertion opening 12. A taper (L37) is formed on the outer periphery of the approximate tip of the movable cylinder 30, and a plug locking ball 38 is accommodated in the same hole, and a hole is formed approximately in the middle of the movable cylinder 30 to communicate with the second hole 18 when the movable cylinder is retracted. The fluid passage is provided with a socket 40 having a structure in which a small hole 34 is provided and a compression spring 39 is installed between the valve cylinder 20 and the movable cylinder 30, and a valve body 51 that is opened by being pushed by the valve pushing part 22,
Since the plug 50 has a circumferential groove 55 on its outer circumferential surface that engages with the locking ball 38, the valve barrel 20 and the movable barrel 30 move relatively independently with a compression spring 39 interposed therebetween. is responsible for connecting the plug 50 and opening and closing the valve body 51, and the movable cylinder 30 is responsible for releasing and restraining the locking ball 38, supporting the tip of the plug, and guiding the valve cylinder 20. On the one hand, this makes it possible to smoothly operate the valve body after the socket 40 and the plug 50 are connected, and on the other hand, even if negative pressure is generated when the socket and plug are separated, it is possible to easily separate the two.

In this way, this invention can automatically open and close the valve body and separate the socket and plug, so it can be used during running tests of coolers and air conditioner units.
It is easy to connect and separate the test device from the piping and open and close the valve body, further improving work efficiency.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a longitudinal sectional front view of the socket, Fig. 2 is a partially cutaway front view of the plug, and Fig. 3 is a partial view showing the state of connection between the socket and the plug. FIG. 4 is a partially cutaway front view showing the state immediately before the plug is removed. 1 is the rear body, 3 is the small diameter cylinder part, 4 is the through hole, 7 is the rear cylinder, 1
0 is the first hole, 11 is the front cylinder, 12 is the insertion port, 18 is the second
20 is a valve barrel, 22 is a valve pusher, 23 is a through hole, 30 is a movable barrel, 34 is a small hole, 37 is a tapered hole, 38 is a locking ball, 39 is a compression spring, 40 is a socket, 50 is a hole plug, 5
1 is a valve body, and 55 is a circumferential groove.

Claims (1)

[Scope of utility model registration request] The rear cylinder 7 and the front cylinder 11 are integrally fixed to the rear body 1 which has a blind small diameter cylinder part 3 having an appropriate number of through holes 4 on the peripheral surface of the tip, and the rear cylinder 7 is connected in the inner and outer circumferential directions. The IJL10 that goes through,
Further, the front cylinder 11 is similarly provided with a second valve cylinder 18, and furthermore, a valve cylinder 20 for opening and closing the through hole 4 is accommodated in the rear cylinder 7 so as to be movable back and forth. A through hole 23 for communicating the through hole 4 with the tip insertion port 12 of the front cylinder part 11 and a valve push part 22 are provided in the front cylinder part 11, and a valve cylinder 2 is provided in the front cylinder part 11.
A movable cylinder 30 is accommodated so as to be movable back and forth above the movable cylinder 3.
0 protrudes to the outside from the insertion port 12, and
A taper {L37 is formed on the outer periphery of the tip of the movable tube 30, and a plug locking ball 38 is accommodated in the same hole.
18, and a compression spring 39 is installed between the valve cylinder 20 and the movable cylinder 30}
40; and a plug 50 having a structure in which a fluid passage is provided with a valve body 51 that is opened by being pushed by the valve pusher 20, and a circumferential groove 55 that engages with the locking ball 38 on the outer peripheral surface.