JP2005090888A - Ventilation pipe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation pipe capable of being easily mounted on a wall at an accurate angle, coping with a thickness of a wall and simplifying the wiring of a forced ventilation fan. <P>SOLUTION: This ventilation pipe comprises a first pipe main body 2a comprising an outer flange 3, and a second pipe main body 2b comprising an inner flange 4, partially fitted to the first pipe main body 2a, and having an adjustable axial length. The mounting faces of the outer flange 3 (square) and the inner flange 4 (round) are vertical faces in parallel with the wall face, axes p of the first and second pipe main bodies 2a, 2b are inclined to a horizontal face H in a state that an outer flange side is located at a low position, and the first and second pipe main bodies 2a, 2b are fixed to the outer flange 3 and the inner flange 4. The outer flange 3 has a screw hole 7 at its corner part to be seen from the side of the inner flange 4. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a ventilation pipe that forms an air passage using the pipe.

  In wooden houses, pipes are installed through the walls and the attic is ventilated. In order to attach the pipe, conventionally, it is necessary to attach a base material for receiving the pipe in the wall in advance. Also, even if the base material is attached, the pipe has a round cross section, so the attachment position is difficult to determine, and when finished, the pipe axis is inclined to the indoor side, and rainwater enters the indoor side through the pipe There is also a risk of doing. Furthermore, since the pipe has a round cross section, the tape tends to wrinkle when the gap between the pipe and the wall is sealed with a waterproof tape, making it difficult to achieve a clean finish.

  In order to solve this problem, the vent pipe of Patent Document 1 improves the airtight performance and waterproof performance around the vent pipe by integrating the vent pipe and the flange. The ventilation port of Patent Literature 2 includes a substantially V-shaped groove-like portion 2 </ b> C formed in the bottom portion of the exhaust duct 2 from the outdoor side end portion toward the indoor direction. However, in the vent pipe of Patent Document 1, the mounting structure is complicated and time-consuming. Further, there is no disclosure of a configuration that prevents dew condensation water or the like inside the ventilation pipe from entering the indoor side, or a configuration that makes it easy to attach the ventilation pipe. The ventilation port of patent document 2 needs to prepare the pipe of a special cross-sectional shape as a duct part. Further, in any case, when a fan for forced ventilation is attached, it is necessary to post-process the hole for wiring, and the total length cannot be adjusted according to the wall thickness.

JP-A-9-177299 JP-A-8-178381

  In the present invention, the ventilation pipe can be attached with a predetermined inclination with respect to the wall with a simple structure, installation work such as screwing and wiring are easy, and ventilation according to the wall thickness. An object is to provide a ventilation pipe that can adjust the length of the pipe.

The ventilation pipe is composed of a pipe body and a flange, and the pipe body is fixed to the flange in such an arrangement that the axis of the pipe body is lower on the outdoor side than the horizontal with respect to the vertical surface of the flange attached to the wall.
The pipe main body may be divided into a first pipe main body and a second pipe main body, and the second pipe main body may be fitted into the first pipe main body so that the axial length can be adjusted.

If the ventilation pipe has an outer flange (outdoor side) and an inner flange (indoor side), make one flange a square with a corner and the other flange a round without a corner. The corner of one of the flanges can be seen from the axial direction.
A notch extending over both parts is provided in the connection part between the pipe body and the inner flange to form a wiring hole when a fan for forced ventilation is used.

By simply fixing the flange to the wall, the pipe body can always be mounted low on the outdoor side, preventing rainwater from entering.
When the corner of one flange is screwed to the wall, the other flange does not interfere with the operation.
Since the pipe body is divided into the first and second pipe bodies and the overall length can be adjusted, the ventilation pipe can correspond to the wall thickness.
Since the wiring hole is provided in advance, wiring of the forced ventilation fan is easy.

An outer flange and an inner flange are fitted to the pipe body that penetrates the wall and fixed by bonding or the like. The pipe body is fixed to the vertical surface of the flange so that its axis is lowered on the outdoor side. In the case of a synthetic resin, it may be fixed by integral molding.
When dividing the pipe body, the outer flange is fixed to the outdoor side of the first pipe body, and the inner flange is fixed to the indoor side of the second pipe body.
In either case, a wiring hole extending over both portions is formed by cutting out a bent portion where the pipe body and the inner flange are connected.

  The ventilation pipe 1 includes a pipe body 2, an outer flange 3, and an inner flange 4 (FIG. 1). These are molded products of ABS resin, and the pipe body 2 has an outer diameter of 55.5 mm and an inner diameter of 52.5 mm. The outer flange 3 is a square with a side of 150 mm and a thickness of 3 mm, and the inner flange 4 has an outer diameter of 75 mm and an inner diameter of 55.5 mm. The pipe main body 2 is fixed to or integrally molded with an outer flange 3 and an inner flange 4 by bonding. The inner flange 4 is fixed to the same surface as the end face on the outdoor side of the pipe body 2, and corners where the inner flange 4 and the pipe body 2 are connected are cut out at two locations, and wiring holes 5 and 5 are formed over both portions. .

The outer flange 3 is rectangular and has a corner 6, and a screw hole 7 is formed in that portion. The inner flange 4 is round and has no corners, and the corners of the outer flange 3 can be seen from the direction of the axis p of the pipe body 2.
FIG. 2 shows a state in which the ventilation pipe 1 is attached to the wall 8 of the wooden house. The wall 8 has an outer plywood 9 and an inner plywood 10 at a predetermined interval, and constitutes a basically vertical surface. Further, in these plywoods 9 and 10, attachment holes 11 are formed in advance so that the pipe body 2 can be inserted into a place where a ventilation pipe is attached.

  When the outer plywood 9 is attached, the outdoor side of the ventilation pipe 1 is inserted into the attachment hole 11, the outer flange 3 is applied to the inner surface of the outer plywood 9, and screws are secured using the screw holes 7 at the four corners. Then, as shown in FIG. 2, the pipe body 2 is attached so that the axis p thereof is inclined at about 1.3 ° with respect to the horizontal plane H and the outdoor side is lowered. That is, the pipe body 2 and the outer flange 3 are fixed so that the axis of the pipe body 2 is inclined by 1.3 ° with respect to the vertical plane of the outer flange 3 from the horizontal plane.

  The operation of screwing the four corners of the outer flange 3 is from the indoor side where the inner flange 4 protrudes. However, since the inner flange 4 has a round shape with no corners, screws located at the corners of the outer flange 3 are used. The hole 7 can be seen through (FIG. 3), and a tool such as a screwdriver can be easily put straight on the screw axis, so that the work can be performed accurately and quickly.

When the ventilation pipe 1 can be fixed to the outer plywood 9 in this way, the wiring tip between the inner and outer plywoods 10 and 9 is brought into the pipe body 2 using the wiring hole 5. Next, the inner plywood 10 is applied to the inner flange 4 from the indoor side, and the inner flange 4 and the inner plywood 10 are fixed by bonding or screwing.
A waterproof tape is attached to the periphery of the outer flange 3 and the inner flange 4 over a plywood board. Since tape is attached to the plane of the flange and the plane of the plywood at any point, the tape is less likely to become wrinkles.

  FIG. 4 shows a configuration in which the ventilation pipe 1 can cope with various wall thicknesses, and the pipe body 2 is divided into a first pipe body 2a and a second pipe body 2b (FIG. 5). The first pipe body 2a has a structure in which the inner flange is removed from the ventilation pipe in the first embodiment only by providing the outer flange 3 on the outdoor side. The second pipe main body 2b is slightly thin on the outdoor side, has an outer diameter equal to the inner diameter of the first pipe main body 2a, and includes an inner flange 4 on the indoor side (FIG. 5).

The outdoor side of the second pipe main body 2b is fitted to the first pipe main body 2a, and the overall length of the pipe main body 2 is adjusted. A wiring hole 5 is formed at a portion where the second pipe body 2b and the inner flange 4 are connected.
That is, the first pipe main body 2a and the second pipe main body 2b constitute the pipe main body 2 as a whole, and the axis p thereof is also the direction in which the outdoor side is lowered at an angle of about 1.3 ° with respect to the horizontal plane H. It is inclined to.
Other configurations and attachment procedures are the same as those in the first embodiment. The second pipe main body 2b may have an outer diameter that can be fitted into the first pipe main body as a whole.

FIG. 6 is a modification of the second embodiment, and the pipe body 2 is composed of the first and second pipe bodies 2a and 2b. The ventilation pipe of the first embodiment is used as the first pipe body. It is used as it is. For this reason, although the inner flange 4 exists in the 1st pipe main body 2a and the 2nd pipe main body 2b, the inner flange 4 of the 1st pipe main body does not contribute to attachment of the ventilation pipe 1. FIG.
The structure of this embodiment is based on the first pipe body (structure of Embodiment 1) having the outer flange 3 and the inner flange 4, and the second pipe body 2b having the inner flange 4 is the embodiment. It is an adapter for extension of 1 ventilation pipe.

The above is an Example, The dimension and angle which were demonstrated can be designed according to a use and a use location. Further, the material of the flange and the pipe main body may be a metal or other synthetic resin.
The wall structure is an example before finishing in a wooden house.
A ventilation hood is usually installed at the outdoor end of the ventilation pipe to prevent the invasion of birds and insects and the direct blowing of rain and wind.

Perspective view Side view showing a part in section Front view Side view showing a part in cross section (Example 2) Partial perspective view (Example 2) Side view showing a part in cross section (Example 3)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ventilation pipe 2 Pipe main body 2a 1st pipe main body 2b 2nd pipe main body 3 Outer flange 4 Inner flange 5 Wiring hole 6 Corner part 7 Screw hole 8 Wall 9 Outer plywood 10 Inner plywood 11 Attachment hole

Claims (4)

  A pipe that is attached through a wall and is fixed to the wall with a flange. The pipe body is composed of a pipe body, an outer flange and an inner flange that are integrally provided on the pipe body, and the outer flange and the inner flange have a mounting surface parallel to the wall surface. A ventilation pipe characterized in that the pipe body is fixed to the outer flange and the inner flange with the axis of the pipe inclined downward on the outer flange side with respect to the horizontal plane.   A pipe that is attached through a wall and is fixed to the wall with a flange, and includes a first pipe body having an outer flange, an inner flange, and a part thereof fitted to the first pipe body. The second pipe body is adjustable in length in the axial direction. The outer flange and the inner flange have a mounting surface as a vertical plane parallel to the wall surface, and the first and second pipe bodies have their axes aligned. A ventilation pipe characterized in that the outer flange side is inclined low with respect to the horizontal plane and fixed to the outer flange and the inner flange.   One of the outer flange and the inner flange is a square with a corner, and the other is a round without a corner, and is sized so that the corner of the square flange can be seen from the round flange side in the axial direction of the pipe. The ventilation pipe according to claim 1 or 2. The ventilation pipe according to any one of claims 1 to 3, wherein a wiring hole is formed in a connection portion between the pipe body and the inner flange by a notch extending between the pipe body and the inner flange.

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