JPH0414698Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pipe joint, and more particularly to a highly versatile pipe joint that can be attached to various valve bodies.

Generally, various valve mechanisms are used in fluid pressure equipment. In actual equipment, the valve body is not pre-assembled into the fluid pressure equipment body, and in that case, a valve unit that is integrally formed with the valve body and a pipe fitting for connecting the pipe line to the fluid pressure equipment is attached to the fluid pressure equipment. I am wearing it.

In this case, in a conventional valve unit consisting of a valve body and a pipe joint, the two components are integrally molded. Therefore, if only either the valve body or the pipe fitting encounters an accident such as failure or damage, in order to replace one component, it is necessary to replace the other component as a whole with the other component that does not need to be replaced. There must be. In other words, there is a lot of waste and it is extremely uneconomical.
Furthermore, there is also the disadvantage that the valve unit itself lacks ease of maintenance and management.

The present invention has been devised to overcome the above-mentioned disadvantages, and it is an object of the present invention to provide a pipe joint that removably bonds various valve bodies, on the premise that the shape of a part of the valve body is standardized. With the goal.

In order to achieve the above object, the present invention includes cylindrical parts 16a and 16b made of a flexible and elastic material, into which the valve bodies 76 and 86 fit, and the cylindrical part 16.
a, 16b and arranged in a direction perpendicular to the cylindrical part 16a or in parallel to the cylindrical part 16b on the side of the cylindrical part 16b, are integrated. The cylindrical portions 16a, 16b are formed with large and small diameter holes 20a, 20b that communicate with each other, and the valve bodies 76, 86 are positioned relative to the holes 20a, 20b of the cylindrical portions 16a, 16b. The inner walls of the cylindrical portions 16a and 16b and the valve body 7
6, 86, and is configured to allow passage of fluid and block the passage of fluid between the holes 18, 58 of the pipe body connecting portions 14, 46 and the holes 20a,
20b through holes 22a, 22b perpendicular to the axes of the cylindrical portions 16a, 16b.

Next, preferred embodiments of the pipe joint according to the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 indicates a pipe joint according to the first embodiment, and a body 12 constituting the pipe joint 10 is composed of a pipe connecting portion 14 and a cylindrical portion 16a. In this case, the material of at least the cylindrical portion 16a is selected to have flexibility and elasticity, and a tapered portion 17a is formed on the inner surface of the cylindrical portion 16a.
form. Furthermore, the wall thickness of a part of the cylindrical portion 16a is increased so that the hole 20a defined in the cylindrical portion 16a is formed with a step so that it consists of a relatively large diameter hole and a relatively small diameter hole. Add it and configure it. In particular, the thick portion of the cylindrical portion 16a also functions to sufficiently hold the valve body when the valve body is selectively fitted, as will be described later. A hole 18 is formed in the tubular body connecting portion 14, and a hole 22a is bored through which the hole 20a of the cylindrical portion 16a communicates with the hole 18. Note that the hole 18 is provided with a tube connection mechanism.

The tube connection mechanism used in this embodiment is not particularly limited, but preferably a tube connection mechanism 24a as shown in the drawing is used. That is, the tube connection mechanism 2
4a is a guide 26, a collet 28 partially inserted into the guide 26, and a chuck 3 fitted into the collet 28.
0, a release bush 32 for releasing the chuck 30 from its inserted state, and a sealing member 34 for sealing the outer periphery of the tube inserted into the hole 18. In this case, the tube connected to the tube connecting portion 14 can be easily attached and detached by the tube connecting mechanism 24a.

FIG. 2 shows a second embodiment of the pipe joint according to the present invention.

In the figure, reference numeral 38 indicates a pipe joint, and a body 40 constituting this pipe joint 38 is a cylindrical portion 16.
b, a pipe section 44, and a pipe connection section 46. The cylindrical portion 16b is equivalent to the cylindrical portion 16a of the first embodiment in terms of shape, flexibility, etc. That is, this cylindrical portion 16b is formed with a hole 20b having the same shape as the hole 20a in the first embodiment and a tapered portion 17b, and a hole 2 that communicates with the hole 20b.
Drill 2b. The conduit section 44 has a hole 52 communicating with the hole 22b, and a blind cap 56 is fitted to close this opening. A hole 58 communicating with the hole 52 is bored in the tube connection portion 46, and a tube connection mechanism 24b similar to the tube connection mechanism 24a in the first embodiment is fitted therein.

In FIG. 3, reference numeral 62 indicates an adapter that fits into the hole 52 of the second embodiment.

This adapter 62 is formed with a columnar portion 64 that fits into the hole 52, and a protrusion 65 is formed on the columnar portion 64 to obtain a suitable fitting state into the hole 52. moreover,
A sealing member 66 is attached to the columnar portion 64 . In addition, a hole 68 having an internal thread is bored in the adapter 62, and a hole 70 communicating with the hole 68 and passing through the columnar portion 64 is bored. Note that the hole 68
is for connecting a pressure gauge or a conduit that connects to other equipment. Therefore, if there is no need to connect a pressure gauge or a pipe body to the hole 68, as shown in the figure, the sealing member 72
The opening of the hole 68 may be closed using a plug 74 provided with a .

Next, with reference to FIGS. 4 and 5, a valve body that fits into the pipe joint 10 will be illustrated along with a portion of the pipe joint 10.

In FIG. 4, a valve body 76 constituting a pressure control valve includes a first body 78 and a second body 80. In this case, the first body 78 and the second body 80
is made of metal, and its circumferential step portions 81, 8
3 has an annular protrusion 82 inclined in the insertion direction;
84 is formed to protrude.

Therefore, a portion of the bodies 78, 80 is fitted into the hole 20a of the pipe joint 10. As a result, the tips of these protrusions 82 and 84 fit into the elastic surface defining the hole 20a, so that a suitable close contact state can be obtained. Particularly in this case, the annular protrusion 84 can be easily inserted into the thin portion of the cylindrical portion 16a by utilizing its flexibility.

In such a fitted state, if a liquid at a predetermined pressure, such as air, is introduced from the hole 18, this pressure control valve can be suitably operated.

FIG. 5 shows a valve body 86 constituting a pressure control valve having a function different from that of the valve body 76.

In this case, the body 88 constituting the valve body 86 is also formed with an annular protrusion 90 similar to the embodiment described above, and the valve body 86 is fitted into the hole 20a from above in the figure. When fitting the valve body 86 in this way, the hole 2
Since Oa is composed of a large-diameter hole and a small-diameter hole, the protrusion 90 does not bite into the surface defining the large-diameter hole. Therefore, the valve body 86 can be easily inserted into the hole 20a without damaging the surface by the protrusion 90. In addition, the pipe joint 10
Since the tapered portion 17a is formed inside the hole 20a, the protrusion 90 can be inserted into the small diameter hole without being stopped by the stepped portion of the hole 20a.

In this assembled state, the annular protrusion 90 firmly bites into the inner wall of the cylindrical portion 16a of the pipe joint 10, as in the previous embodiment. Therefore, leakage of the fluid fed from the hole 18 side due to the O-ring fitted to the body 88 and the dust is suitably prevented, and the valve body 86 effectively achieves its function.

Note that the valve bodies 76 and 86 illustrated above are the second
It can also be attached to the pipe joint 38 which is an example of
The function and structure of the valve body are the same as those of the valve body 76, 86.
but not limited to.

An embodiment of the pipe joint according to the present invention and an example of the valve body attached thereto are basically constructed as described above, and the effects thereof are summarized as follows.

In the pipe joint 10 of the first embodiment, the cylindrical portion 1
Since 6a has flexibility and elasticity, the valve body can be detachably attached thereto. Therefore, maintenance of the valve unit consisting of the pipe fitting 10 and the valve body is easy, and either the pipe fitting 10 or the valve main body can be easily replaced as necessary. Further, when the valve body is attached, the protrusion formed on the valve body penetrates into the cylindrical portion 16a, so that desired attachment strength can be obtained. Furthermore, since the pipe joint 10 is rotatable with respect to the valve body, the direction of the pipe connected to the pipe connection portion 14 relative to the valve body can be freely selected. Incidentally, since the cylindrical portion 16b of the pipe fitting 38 according to the second embodiment has the same configuration as the cylindrical portion 16a, the above effects can be achieved in the pipe fitting 38 as well.

Further, an adapter 62 having a screwed plug 74 shown in FIG. 3 can be used by being attached to the pipe joint 38. In this case, if necessary, the plug 74 can be removed and a pressure gauge or a pipe communicating with other devices can be connected to the hole 68, making it possible to meet a wider range of needs.

As explained above, in the pipe joint according to the present invention, by standardizing the shape of the valve body in advance, it becomes possible to construct a valve unit by detachably attaching the valve body to the pipe joint. Therefore, maintenance and management of the valve unit becomes easy, each element constituting the valve unit can be easily replaced, and the pipe joint has the advantage of being highly versatile. Furthermore, the valve body can be held stably by the stepped hole in the cylindrical part, and the valve body can be held securely by the thick walled part of the cylindrical part. It also has the advantage of being able to be positioned.

Although the present invention has been described above with reference to preferred embodiments, the present invention is not limited to these embodiments, and various improvements and changes in design are possible without departing from the gist of the present invention. Of course.

[Brief explanation of the drawing]

Fig. 1 is a schematic cross-sectional view of a first embodiment of a pipe joint according to the present invention, Fig. 2 is a schematic cross-sectional view of a second embodiment of a pipe joint according to the present invention, and Fig. 3 is a schematic cross-sectional view of a second embodiment of a pipe joint according to the present invention. Schematic cross-sectional view of the adapter and plug attached to the 4th
The figure is a schematic cross-sectional view of a part of the pipe joint according to the present invention and the valve body attached thereto, and FIG. 5 is a schematic cross-sectional view of a part of the pipe joint according to the present invention and the valve body attached to it. be. 10... Pipe joint, 12... Body, 14... Pipe body connection part, 16a, 16b... Cylindrical part, 17a,
17b...Tapered portion, 18, 20a, 20b, 2
2a, 22b... Hole, 24a, 24b... Pipe connection mechanism, 38... Pipe joint, 40... Body, 44
... Pipe line section, 46 ... Pipe connection section, 52 ... Hole,
56... Blind cap, 58... Hole, 62
...adapter, 64 ... columnar part, 65 ... protrusion,
68, 70... Hole, 74... Plug, 76... Valve body, 78, 80... Body, 81... Step part, 8
2...Protrusion, 83...Step, 84...Protrusion, 86
...Valve body, 88...Body, 90...Protrusion.

Claims (1)

[Scope of utility model registration request] The valve body 76 is made of a flexible and elastic material.
The cylindrical portions 16a and 16b that are fitted with the cylindrical portions 86 and the cylindrical portions 1
6a or in the direction perpendicular to the cylindrical portion 1
Pipe connection parts 14 and 46 arranged parallel to the cylindrical part 16b on the side of the cylindrical part 16b are integrally formed, and the cylindrical parts 16a and 16b have large-diameter and small-diameter holes 20a that communicate with each other. , 20b, and the valve bodies 76, 86 are relatively rotatably fitted into the holes 20a, 20b of the cylindrical parts 16a, 16b, and the inner walls of the cylindrical parts 16a, 16b and the valve bodies 76, 86, and is configured to allow passage of fluid and block the passage of fluid between the tube body connecting portions 14, 46 and the hole 20.
A, 20b communicate with each other through holes 22a, 22b perpendicular to the axes of the cylindrical parts 16a, 16b.