JP3309744B2 - Pipe fittings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a pipe joint for connecting a drain hose for drainage.

[0002]

2. Description of the Related Art A conventional technique will be described with reference to FIG. FIG. 7 is a front sectional view of the pipe joint. FIG. 8 is a front sectional view of another pipe joint.

[0003] The conventional technique shown in FIG.
No. 12660), the pipe joint has a generally three-junction cylindrical shape, the first connection opening cylindrical portion 1a and the second connection opening cylindrical portion 1b are located above, and the third connection Opening cylinder part 1
c is located below.

A first connecting opening tubular portion 1a and a second connecting opening tubular portion 1b connect the other ends 2a, 2b of corrugated tubes 2, 2 having one end connected to an air conditioner or the like. And
The third connection opening cylindrical portion 1c is provided at one end 3 of the corrugated pipe 3 for guiding the drainage flowing inside the corrugated pipes 2 and 2 to the drain groove.
a.

[0005] An air vent cylinder 4 extends upward between the first connection cylinder 1a and the second connection cylinder 1b. The air release cylinder 4 is formed integrally with the pipe joint body, and the upper end is closed by the upper bottom 4a during the formation.

In such a pipe joint, a corrugated pipe 2,
When it becomes necessary to bleed air from the inside of the pipe joint 2, 3 or the pipe joint, the air bleeding cylinder 4 is cut into upper and lower portions 4 with a cutting tool such as a nipper.
By cutting a and forming an air vent opening, the air can be satisfactorily discharged.

As shown in FIG. 8, another pipe joint has a substantially cylindrical shape, a first connecting opening cylindrical portion 5a is located upward, and a second connecting opening cylindrical portion is provided. 5b may be disposed below. On the outer surface between the first connection opening cylindrical portion 5a and the second connection opening cylindrical portion 5b, an air venting cylinder 6 that is inclined obliquely upward is integrally formed. The air vent cylinder 6 is also closed at the upper end at the time of molding, and when it is necessary to vent the air, the air vent cylinder 6 is cut and used with a cutting tool such as a nipper.

[0008]

However, in the pipe joints shown in FIGS. 7 and 8 described above, in order to bleed air using the air bleeding cylinders 4 and 6, for example, a cutting tool is used. 7, the air vent opening must be formed by cutting as shown by the one-dot chain line in FIG. 8, and there are problems such as the need for labor and the risk of injury.

It is preferable to return to the original sealed state after the necessity of air bleeding is eliminated. However, once the air bleeding cylinders 4 and 6 are cut to form the air bleeding openings, the original sealed state is restored. Therefore, when the air vent opening is formed and left for a long period of time, foreign matter such as dust enters through the air vent opening, and the inside of the pipe joint may be clogged by the foreign matter. There was a problem.

In the above-described pipe joint, the corrugated pipe 2 is not connected to one of the first connection cylinder 1a and the second connection cylinder 1b, and the air release cylinder is not connected. However, in this case, two corrugated pipes 2 and 2 serving as a three-junction pipe joint are merged, and one corrugated pipe 3 is used to guide drainage to a drain. However, there is a problem that the function cannot be utilized, and the application is limited, and the usability is deteriorated.

The present invention has been made to solve the above problems, and an object of the present invention is to allow air to be easily vented without impairing the original function, and to improve the condition according to the situation. It is an object of the present invention to provide a pipe joint which can be used properly.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to the first aspect of the present invention, which has a substantially cylindrical shape and has one end connected to one pipe. A tube having one connection portion and a second connection portion connecting the other tube at the other end, wherein the first connection portion is disposed above the second connection portion. In the joint, the first connection portion was provided with a sealed connection portion for connecting one tube in a sealed state and a connection portion for air release for connecting the one tube in a non-sealed state in the axial direction of the pipe joint. It is characterized by the following.

[0013] The invention according to claim 2 is characterized in that the first connecting portion has a plurality of sets of the sealed connecting portion and the air vent connecting portion with different pipe diameters. Things.

[0014]

1 to 6 show an embodiment of the present invention.
This will be described with reference to FIG. FIG. 1 is a front sectional view of a pipe joint.
FIG. 2 is a cross-sectional view when the pipe joint is cut perpendicularly to the axial direction at the fitting portion. 3 to 5 are front sectional views of the pipe joint. FIG. 6 is a front view of another pipe joint.

In FIG. 1, a pipe joint 7 has a substantially cylindrical shape, and an upper connecting portion 9 corresponding to a first connecting portion to which corrugated tubes 8, 14 corresponding to one tube are connected to one end. And a lower connection portion 11 corresponding to a second connection portion to which a corrugated tube 10 corresponding to another tube is connected at the other end. The pipe joint 7 is disposed such that the upper connection portion 9 is located above the lower connection portion 11.

The upper connecting portion 9 is provided with corrugated tubes 8 having different diameters.
14 so that the large-diameter portion 12 and the small-diameter portion 13 can be inserted and connected.
Are provided. The large-diameter portion 12 and the small-diameter portion 13 have sealed connection portions 12a and 13a for connecting the corrugated tubes 8 and 14 in a sealed state, respectively, and an air vent connection for connecting the corrugated tubes 8 and 14 in a non-sealed state. The parts 12b and 13b are connected to the pipe joint 7
In the axial direction.

The sealed connecting portion 13a of the small diameter portion 13 has a section having an axial length equivalent to one peak of the small diameter corrugated tube 8 which is the same as the peak diameter of the corrugated tube 8 or slightly smaller than the outer peak diameter. It has an inner surface with a diameter, and the corrugated tube 8 is hermetically held by inserting one end of the corrugated tube 8 by pushing it. That is, there is no gap between the crest 8a of the corrugated tube 8 and the inner surface of the sealed connection portion 13a.

The air vent connecting portion 13b of the small diameter portion 13
It is provided above the sealing connection portion 13a, and a section having an axial length of about three to four peaks of the corrugated tube 8 is formed to have a diameter larger than the peak diameter of the large-diameter corrugated tube 8. As shown in FIGS. 1 to 3, a fitting portion 13 c fitted to the valley portion 8 b of the corrugated tube 8 forms a substantially annular shape on the inner surface so as to extend in the circumferential direction of the pipe joint 7 as shown in FIGS. The projection is formed. This fitting portion 13c
By fitting into the trough 8b, the corrugated tube 8 is prevented from falling off. The fitting portion 13c is partially provided with a cutout portion 13d. The cutout portion 13d allows the corrugated tube 8 to be connected to the air vent connection portion 13b. The gap between the outside surface of the pipe 8 and the inside surface of the air vent connection portion 13b and the gap between the bottom outside surface of the corrugated tube 8 and the inside surface of the air vent connection portion 13b are communicated.

The sealed connection portion 12a of the large diameter portion 12 is provided above the air vent connection portion 13b, and has an axial length of about two ridges of the large diameter corrugated tube 14 as shown in FIG. The section of the rib has an inner surface with a diameter equal to or slightly smaller than the outer diameter of the corrugated tube 14, and by inserting one end of the corrugated tube 14 by pushing it in, the corrugated shape is obtained. The tube 14 is kept sealed. That is, the peak 14a of the corrugated tube 14
There is no gap between the inside and the inner surface of the sealed connection portion 12a.

The air vent connection 12b of the large diameter portion 12
It is provided above the sealed connection portion 12a, and a section having an axial length of about three to four peaks of the corrugated tube 14 has a diameter larger than the peak diameter of the large-diameter corrugated tube 14. The fitting portion 12c that fits into the valley portion 14b of the corrugated tube 14 has a substantially annular shape on the inner surface like the small-diameter portion 13 shown in FIG. It is formed to project in the circumferential direction. The fitting of the fitting portion 12c to the valley portion 14b prevents the corrugated tube 14 from falling off. The fitting portion 12c is partially provided with a notch portion 12d, and the notch portion 12d allows the corrugated tube 14 to be connected to the air vent connection portion 1.
2b, a gap between the upper outer surface of the corrugated tube 14 of the fitting portion 12c and the inner surface of the air vent connection portion 12b, and a gap between the lower outer surface of the corrugated tube 14 and the inner surface of the air vent connection portion 12b. And communicate with.

The lower connecting part 11 is formed by connecting the corrugated pipe 10 to the pipe joint 7.
Are connected so as to be located on the outer surface side. The fitting portion 11a fitted to the inner surface of the corrugated pipe 10 is formed in a substantially annular shape and is formed to protrude in the circumferential direction of the pipe joint 7. The lower connecting portion 11 is formed so as to gradually decrease as the pipe diameter approaches the pipe end so that corrugated pipes having different pipe diameters can be connected.

The method of using the pipe joint 7 constructed as described above is similar to that of the pipe joint described in the prior art.
A corrugated pipe, one end of which is connected to an air conditioner or the like, is connected to the upper connection part 9 and a corrugated pipe for guiding drainage to the drainage groove is connected to the lower connection part 11, but air vent is not required. There is a difference in the proper use depending on the situation.

That is, when air bleeding is required, the corrugated tube 14 is inserted and connected to the air bleeding connection portion 12b of the large diameter portion 12 as shown in FIG. 5, or as shown in FIG. The corrugated tube 8 is connected to the air vent connection portion 13b of the small diameter portion 13.
Insert and connect up to Then, the fitting portion 12c or the fitting portion 13c holds the corrugated tubes 14 and 8, and the cutout portions 12d and 13d communicate with the gaps formed above and below the fitting portions 12c and 13c. Can be.

When air bleeding is not required, a large-diameter corrugated tube 14 is inserted and connected to the sealed connection portion 12a of the large-diameter portion 12 as shown in FIG. 4, or as shown in FIG. The small-diameter corrugated tube 8 is inserted and connected to the sealed connection portion 13 a of the small-diameter portion 13. Then, the corrugated tubes 14, 8 are hermetically held on the inner surfaces of the sealed connection portions 12a, 13a.
Can be connected without bleeding air.

The air vent connection portions 12b, 1
The selection of connection to 3b or to the sealed connection portions 12a and 13a can be made freely according to the situation, and even if an inappropriate connection is made to the situation, it can be easily corrected. To a proper use condition.

In the pipe joint constructed as described above, a sealed state or a non-sealed state can be easily and safely realized only by changing the insertion depth of the corrugated pipes 8 and 14 into the pipe joint 7. Can be used properly according to the situation. Further, since the large diameter portion 12 and the small diameter portion 13 are provided, the corrugated tubes 8 and 14 having different tube diameters can be connected.

In the present embodiment, the number of the upper connection portions 9 is described as one, but the number of the upper connection portions 9 is not limited to one, and a plurality of the upper connection portions 9 may be provided. That is, as shown in FIG. 6, at the intermediate portion between the upper connection portion 9 and the lower connection portion 11 of the pipe joint 7, the branch tubular portion 16 extends to the side of the pipe joint 7 and is parallel to the upper connection portion 9. The branch tube portion 16 may be provided with the upper connection portion 9 so as to extend. In this case, two corrugated pipes are joined to form 1
A sealed state or a non-sealed state can be easily and safely realized while taking advantage of the function of guiding drainage to the drainage ditch by the corrugated pipe of the present invention, and can be properly used depending on the situation.

[0028]

Since the pipe joint of the present invention is constructed as described above, according to the first aspect of the present invention, when one pipe is connected to the sealed connection portion, one pipe is connected in a sealed state. When one pipe is connected to the air bleeding connection, one pipe can be connected in an unsealed state, so that only by changing the insertion depth of one pipe into the fitting, air bleeding can be easily performed. It can be performed properly, and it can be used properly according to the situation.

According to the second aspect of the present invention, the first aspect is provided.
In addition to the effects of the invention described above, since a plurality of sets of the sealed connection portion and the air vent connection portion are provided with different pipe diameters, it is possible to connect pipes having different pipe diameters.

[Brief description of the drawings]

FIG. 1 is a front sectional view of an example of a pipe joint of the present invention.

FIG. 2 is a cross-sectional view when the pipe joint is cut perpendicularly to an axial direction at a fitting portion.

FIG. 3 is a front sectional view of a pipe joint.

FIG. 4 is a front sectional view of a pipe joint.

FIG. 5 is a front sectional view of a pipe joint.

FIG. 6 is a front view of another example of the pipe joint.

FIG. 7 is a front sectional view of a conventional pipe joint.

FIG. 8 is a front sectional view of another conventional pipe joint.

[Explanation of symbols]

 7 Fitting 8 One pipe 9 First connection part 11 Second connection part 12a Sealed connection part 13a Sealed connection part 12b Connection part for air release 13b Connection part for air release

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F16L 21 / 00,33 / 00,33 / 26 F16L 37 / 02,55 / 07 E03C 1/122

Claims (2)

(57) [Claims] A first connecting part connecting one pipe at one end and a second connecting part connecting another pipe at the other end; In a pipe joint arranged so that a first connection part is located above a second connection part, a sealed connection part which connects one pipe in a sealed state to the first connection part, and one pipe And a connection part for air release for connecting the pipe joint in a non-sealing state in the axial direction of the pipe joint. 2. The pipe joint according to claim 1, wherein the first connection section has a plurality of sets of the sealed connection section and the air vent connection section with different pipe diameters.