JPH10280519A - Pipe connecting opening structure and pipe connecting cap provided with this structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe connecting cap which is designed to close a pipe connecting area which can connect stably pipe bodies which are different in size. SOLUTION: A pipe holding cylinder 26 is integrally formed with a connecting cylinder 26 which is designed to be connected to a pipe connecting area. A ring-shaped cutting-off groove 22, which is thin-walled on the peripheral edge, is formed on the pipe holding cylinder 26. A cutting-off starting groove 23 is formed so that one end of the groove may be connected to the cutting-off groove 22, thereby forming integrally a connecting opening closing piece 21 which forms an operation piece 24 on the surface near the cutting-off starting groove 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe connecting port structure for forming a connecting port for connecting a pipe having a predetermined diameter after molding a member, and a cap for a pipe connecting portion provided with this structure. Things.

[0002] Conventionally, for example, drainage, rainwater, rainwater permeation, and the like made of low foamed molded articles made of polypropylene, molded articles made of hard vinyl chloride, and other molded articles made of synthetic resin (hereinafter referred to as rainwater In the case of drainage and rainwater infiltration, the same is basically applied.) In FIG. 2, the peripheral wall of the main body is connected so that the main pipe and the branch pipe can be connected, respectively, as shown in FIG. 11 approximately 9 each other
Four main pipe connecting portions 12 are projected at substantially equal intervals so as to form an angle of 0 °.
One branch pipe connection capable of holding the branch pipe 3 inserted at a predetermined range of the insertion angle α between the main pipe connecting portions 12 and 12 and at the same height as the protruding position of the main pipe connecting portions 12 and 12. The portion 13 is configured to protrude.

In this case, the main pipe connecting portion 12 is formed in a socket shape for inserting and connecting the main pipe or a spout shape for inserting and connecting to the main pipe so that the main pipe can be directly connected. The branch pipe connecting portion 13 is formed in a socket shape for inserting and connecting the branch pipe 3, and has a maximum deflection from the center axis of the branch pipe connecting portion 13 within a predetermined insertion angle α. The branch pipe connection part 13 is inserted into the branch pipe connection part 13 within an angle range of 10 ° to 20 ° so that the branch pipe 3 can be held.
Is formed to be larger than the outer diameter of the branch pipe 3,
A packing 16 is attached to the open end of the branch pipe connection portion 13.

[0004] A fitting groove 14 is formed by forming the upper end edge of the main body peripheral wall 11 of the rainwater masque 1 doubly, and the fitting groove 14 is formed.
By fitting a protruding edge formed on the periphery of the lid 10 of the rainwater trough 1 into the
The movement of 0 is prevented.

A mud reservoir 15 having a handle is detachably provided inside the main body of the rain water basin 1 so that mud and debris deposited on the bottom of the rain basin 1 can be easily discharged. ing.

Incidentally, in the rain water masque 1, the main pipe and the branch pipe can be selectively connected to the main pipe connecting portion 12 and the branch pipe connecting portion 13 in accordance with the usage mode of the rain water masque 1. The connection port closing pieces 12a and 13a are integrally formed at the openings of the connection section 12 and the branch pipe connection section 13 at the time of manufacturing the rainwater masque 1. And at the time of installation,
Depending on the mode of use of the rainwater masu 1, the connection port closing piece 12a,
By punching 13a along the separating grooves 12b and 13b formed with a small thickness, the openings of the main pipe connecting portion 12 and the branch pipe connecting portion 13 are opened so that the main pipe and the branch pipe having a predetermined diameter can be inserted. I have.

[0007]

Connection opening closing pieces 12a and 13 are formed in the openings of the main pipe connecting portion 12 and the branch pipe connecting portion 13, respectively.
According to the pipe connecting port structure for integrally forming a, a connecting port for connecting a pipe having a predetermined diameter to the main pipe connecting section 12 and the branch pipe connecting section 13 can be formed after the members are formed, but the rainwater After the masu 1 is buried in the ground, the necessary connection port closing pieces 12a and 13a are cut off due to earth pressure or the like, so that the sediment grooves 12b and 13b are formed so that earth and sand do not enter the rainwater mast 1. The wall thickness cannot be formed extremely thin. Therefore, the work of punching the connection port closing pieces 12a and 13a along the separation grooves 12b and 13b requires time and effort, and when a cutter or the like is used, There was a problem that it was difficult to finish the periphery of the connection port smoothly.

Further, in this pipe connecting port structure, in order to be able to connect pipes having different diameters, it is necessary to form double cut grooves.
Since the smaller diameter pipe is held by the connection port closing piece remaining in a ring shape in which a separation groove is formed on the outer periphery, the pipe cannot be connected stably. There was a problem.

The main pipe connecting portion 12 and the branch pipe connecting portion 13
As shown in FIG. 3, instead of integrally forming the connection port closing pieces 12a and 13a in the opening of the main body connection part 12 and the branch pipe connection part 13 of the rainwater trough 1 formed in an open state, as shown in FIG. In some cases, a detachable cap 102 is attached to close the openings of the main pipe connecting portion 12 and the branch pipe connecting portion 13 that do not connect the main pipe and the branch pipe. There is a problem that the pipe body connectable to the opening of the part 12 and the branch pipe connection part 13 is limited to a specific diameter.

The present invention has been made in view of the above-mentioned problems of the conventional pipe connection port structure, and has a pipe connection port structure which can easily perform an operation of punching out a connection port closing piece along a separation groove. The primary purpose is to provide.

It is a second object of the present invention to provide a pipe connection portion cap for closing a pipe connection portion capable of stably connecting pipes having different diameters. And

[0012]

In order to achieve the first object, a pipe connecting port structure of the present invention is provided for forming a connecting port for connecting a pipe having a predetermined diameter after forming a member. In the pipe connecting port structure, an annular separating groove having a reduced thickness is formed on the peripheral edge of the connecting port closing piece, and one end thereof is continuous with the separating groove inside the separating groove. A disconnection start groove is formed, and an operation piece is formed on a surface of the connection port closing piece near the separation start groove.

In this tube connecting port structure, a cut is formed in a separation start groove near the operation piece by holding the operation piece with a tool such as pliers or pliers, and pulling the operation piece. Thereby, the cut is enlarged from the separation start groove to the separation groove, and the connection port closing piece is separated along the separation groove.

According to another aspect of the present invention, there is provided a pipe connecting portion cap for closing a pipe connecting portion according to the present invention. Forming a separation groove, inside the separation groove, so that one end thereof is continuous with the separation groove, forming a separation start groove,
A pipe connection port structure for forming an operation piece on a surface of the connection port closing piece near the separation starting groove is provided.

The pipe connecting portion cap can close the opening of the pipe connecting portion to which the pipe is not connected, and can also hold the operation piece with a tool such as pliers or pliers and pull the operating piece. By forming a cut in the separation start groove near the operation piece, and further pulling the operation piece,
By expanding the cut from the separation start groove to the separation groove and separating the connection port closing piece along the separation groove, the diameter is smaller than the pipe connected to the opening of the pipe connection part. The pipe can be stably connected to the connection port formed by separating the connection port closing piece.

In this case, the tube holding tube is formed integrally with the connecting tube for connecting to the tube connecting portion.
A connection port closing piece can be formed in the tube holding cylinder.

Thus, the pipe connected to the connection port formed by separating the connection port closing piece can be stably connected via the pipe holding cylinder.

Further, it is possible to form a rib piece provided with an opening having substantially the same diameter as the connection port closing piece in the connection cylinder, and to chamfer an end of the rib piece for introducing a pipe.

Thus, the pipe connected to the connection port formed by separating the connection port closing piece can be smoothly inserted into the opening of the rib piece, and can be stably connected via the rib piece. it can.

[0020]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a pipe connecting port structure according to the present invention, and FIG.

FIG. 1 shows an embodiment of a cap for a tube connecting portion provided with a tube connecting port structure of the present invention. The pipe connecting portion cap 2 is made of a molded body made of a synthetic resin such as polyethylene, polypropylene, and vinyl chloride, and is drained.
Among the pipe connection parts (hereinafter referred to as “pipe connection parts”) such as rainwater and rainwater infiltration, the function of closing the opening of the pipe connection part that does not connect the pipe, and the function of the pipe connection part It also has a function of connecting a pipe smaller in diameter than the pipe connected to the opening.

The cap 2 for pipe connection is connected to a connection tube 26 for connection to the pipe connection via an intermediate face plate 27.
A tube holding tube 25 having a smaller diameter than that of the tube holding tube 25 is formed concentrically or eccentrically as in this embodiment, and a connection port closing piece 21 is formed at an end of the tube holding tube 25.

The connection opening closing piece 21 has an annular separating groove 22 having a reduced thickness on the periphery thereof, and one end thereof is connected to the separating groove 22 inside the separating groove 22. Thus, the separation start groove 23 is formed, and the operation piece 24 is formed on the surface of the connection port closing piece 21 near the separation start groove 23. In this case, the shape of the separation start groove 23 is not limited to the shape shown in the present embodiment (see FIG. 1B), but the operation piece 24 is sandwiched between tools such as pliers and pliers. By pulling, a cut is formed in the separation start groove 23 near the operation piece 24, and further, by pulling the operation piece 24, the cut is enlarged from the separation start groove 23 to the separation groove 22, and the connection port is opened. The closing piece 21 is formed so as to be easily separated along the separation groove 22.

In this case, a rib piece 28 having an opening having substantially the same diameter as the connection port closing piece 21 is formed in the connection cylinder 26 for reinforcement, and a pipe body is provided at an end of the rib piece. A chamfer 28a for introduction is provided.

A flange 29 is provided at the end of the connection tube 26.
And a holding piece 30 is formed on the flange 29.

The pipe connecting portion cap 2 can close the opening of the pipe connecting portion to which the pipe is not connected, and can also hold the operation piece 24 with a tool such as pliers or pliers to pull it. A cut is formed in the separation start groove 24 near the operation piece 24, and further, the cut is enlarged from the separation start groove 24 to the separation groove 22 by pulling the operation piece 24, and the connection port closing piece is formed. 21 is cut along the separation groove 22 so that a pipe having a smaller diameter than the pipe connected to the opening of the pipe connection portion is connected to the connection port formed by separating the connection port closing piece 24. Can be connected. And
The tubes connected in this manner can be stably connected via the tube holding tube 25 and the rib pieces 28.

As described above, an annular separation groove 22 having a reduced thickness is formed on the periphery of the connection port closing piece 21, and one end thereof is connected to the separation groove 22 inside the separation groove 22. Then, the pipe connecting port structure in which the separation starting groove 23 is formed and the operation piece 24 is formed on the surface of the connection port closing piece 21 near the separation starting groove 23 closes the pipe connecting portion. An example in which the present invention is applied to the pipe connection cap 2 used for the above has been described. However, the pipe connection port structure of the present invention is not limited to this example. For example, drainage, rainwater, rainwater penetration, etc. It can also be applied directly to the pipe connection.

[0028]

According to the pipe connecting port structure of the present invention, a cut is formed in the separation start groove near the operation piece by holding the operation piece with a tool such as pliers or pliers and pulling the operation piece. Further, by pulling the operation piece, the cut can be enlarged from the separation starting groove to the separation groove, and the connection port closing piece can be separated along the separation groove. The work of punching along the separation groove can be easily performed, and the peripheral edge of the connection port can be finished smoothly as compared with the case where a cutter or the like is used.

Further, according to the pipe connecting portion cap of the present invention for closing the pipe connecting portion, the opening of the pipe connecting portion to which the pipe is not connected can be closed, and the operating piece can be closed. A notch is formed in the separation start groove near the operation piece by holding and pulling with a tool such as pliers or pliers, and further, by pulling the operation piece, a cut is formed from the separation start groove to the separation groove. By enlarging and separating the connection port closing piece along the separation groove, a pipe body smaller in diameter than the pipe body connected to the opening of the pipe body connection portion, separating the connection port closing piece. A stable connection can be made to the formed connection port.

Further, by forming the tube holding tube integrally with the connecting tube for connecting to the tube connecting portion and forming the connecting port closing piece on the tube holding tube, the connecting port closing piece is cut off. The pipe connected to the formed connection port can be stably connected via the pipe holding cylinder.

Further, a rib piece having an opening having substantially the same diameter as the connection port closing piece is formed in the connection cylinder, and the end of the rib piece is chamfered for introducing a pipe, so that the connection port closing piece is formed. Can be smoothly inserted into the opening of the rib piece, and can be stably connected via the rib piece.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of a cap for a tube connecting portion of the present invention, wherein (a) is a rear view, (b) is a front view, and (c) is (b).
FIG. 4 is a sectional view taken along line AA of FIG.

FIG. 2 shows an example of a rain basin, (a) is a front view,
(B) is a sectional view taken along line BB of (a).

FIGS. 3A and 3B show a conventional pipe connection portion cap, wherein FIG. 3A is a front view, FIG. 3B is a side view, and FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rain water 11 Main body 12 Main pipe connection part 13 Branch pipe connection part 2 Cap for pipe connection part 21 Connection port closing piece 22 Separation groove 23 Separation start groove 24 Operation piece 25 Pipe body holding cylinder 26 Connection cylinder 27 Intermediate face plate 28 Rib piece 28a chamfer

Claims (4)

[Claims] 1. A pipe connecting port structure for forming a connecting port for connecting a pipe having a predetermined diameter after molding a member, an annular separating groove having a reduced thickness at a peripheral edge of the connecting port closing piece. And forming a separation start groove inside the separation groove so that one end thereof is continuous with the separation groove, and forming a separation start groove on the surface of the connection port closing piece near the separation start groove. A pipe connection port structure, wherein an operation piece is formed. 2. A pipe connection portion cap for closing a pipe connection portion, comprising the pipe connection port structure according to claim 1. 3. A connection tube for connecting to a tube connection portion, wherein a tube holding tube is integrally formed, and a connection port closing piece is formed on the tube holding tube. Pipe connection part cap for closing the pipe connection part. 4. A rib piece having an opening having substantially the same diameter as the connection port closing piece is formed in the connection cylinder, and an end of the rib piece is chamfered for introducing a pipe. A pipe connection part cap for closing the pipe connection part according to claim 2 or 3.