JP3105750U - Stepped inclined ventilation pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilation pipe which can be easily fixed at a set inclination angle and can be tightly connected to a duct on the indoor side.
SOLUTION: The stepped inclined ventilation pipe 1 is provided with a flange 2 fixed to a wall component 9 and a pipe 3 penetrating therethrough. The pipe 3 has a length that protrudes inward and outward of the wall 7 and has an insertion portion 5 whose diameter is reduced with a step on the inner end side. Further, the pipe 3 is fixed to the flange 2 whose surface is vertically arranged such that the lower side 10 of the pipe 3 in the side view is lower on the outer end side and higher on the inner end side with respect to the horizontal plane.
[Selection diagram] FIG.

Description

  The present invention relates to a ventilation pipe which is attached by penetrating a wall surface and is connected to a duct for indoor air supply and exhaust.

Ducts may be installed in buildings to ventilate the building and exhaust harmful gases. In this case, in order to allow the duct to communicate with the outside, a ventilation pipe previously penetrated and fixed to the wall is used. The duct is often a spiral tube or bellows tube. A ventilation hood or a ventilation fan may be attached to the outdoor end of the ventilation pipe.
JP-A-2003-314780 JP-A-2000-120938 JP 2000-274760 A JP-A-8-14444

In the construction of a building, a ventilation pipe is inserted and fixed into a through hole formed in a wall after a building frame is completed. Next, a duct is connected to the inner end (indoor end) of the ventilation pipe. This duct is often a so-called spiral tube or bellows tube in a wooden house or the like. At this time, the fitting amount of the duct to the ventilation pipe needs to be appropriate so that dew condensation, rainwater, and the like do not enter the indoor side from the connection portion between the ventilation pipe and the duct and do not fall off due to vibration.
This invention prevents dew condensation or rainwater from leaking from the fitting portion between the ventilation pipe and the duct and invading the indoor side, and the fitting between the ventilation pipe and the duct is easy and appropriate fitting is possible. It is an object to provide a ventilation pipe that can be combined.

A ventilation pipe is constituted by a flange fixed to a member (wall surface constituting member) constituting a wall surface and a pipe penetrating the flange. The pipe has a length that protrudes inward and outward of the wall, and has an insertion portion with a reduced diameter by providing a step on the inner end side. The lower side of the pipe (the longitudinal axis of the pipe is defined as the front / rear direction, and the lower side in the side view in this case) is lower at the outer end than the horizontal plane. Fix so that the end side is high. The step is formed from the inner end side of the pipe at a position that determines the fitting length with the duct connected to the pipe. The step may be a stopper with which the tip of the duct inserted from the inner end side of the pipe abuts.
The flange and the pipe are fixed such that the lower side of the pipe in a side view is lower at the outer end and higher at the inner end when the surface of the flange is vertical.

When the flange is fixed to the wall component by nailing or the like, the wall component is fixed vertically, so the ventilation pipe is automatically fixed to the wall at the set angle with the outer end side lower and the inner end side higher. You. That is, since the pipe is fixed to the wall at the automatically set inclination angle, the installation work of the inclined pipe is simple. Further, since the pipe is inclined outward, dew condensation and rainwater do not move to the indoor side, and do not leak from the connection between the ventilation pipe and the duct.
Since the insertion portion whose diameter is reduced by a step is formed on the inner end side of the pipe, the duct can be easily inserted, and the fitting amount can be made appropriate by the step. For this reason, it is possible to prevent the duct from falling off and the exhaust gas from leaking, and to prevent the next step from being inserted too much.

  The pipe and flange are integrally formed with synthetic resin. An insertion with a reduced diameter is formed on the inner end side of the pipe with a step. When the material is a synthetic resin, the difference between the diameter at the outer end and the diameter at the inner end is about the thickness of the pipe. The inclination of the pipe with respect to the flange is such that the lower side in a side view is about 0.5 to 2.5 ° with respect to a horizontal plane.

1 to 3 show a first embodiment. The stepped inclined ventilation pipe 1 includes a flange 2 and a pipe 3. In this embodiment, the flange 2 and the pipe 3 are integrally molded products of polypropylene resin, and each part has a thickness of about 2.5 mm. The stepped inclined ventilation pipe 1 is for ventilation of a wooden house, the flange 2 is a square with a side of 170 mm, the pipe 3 has an outer diameter of 105 mm on the outer end side, an outer diameter of 97 mm on the inner end side, and the total length of the pipe 3 Is 186 mm, and a step 4 is formed at a position 54 mm from the inner end so as to have a small diameter and form an insertion portion 5. The outer peripheral edge of the inner end is chamfered 6.
When the surface of the flange 2 is arranged vertically, the pipe 3 is integrally fixed so that the lower side in the side view of the pipe 3 crosses the horizontal plane at an angle of about 1.3 ° so that the outer end is lower and the inner end is higher. (FIG. 3).

  FIG. 3 shows a state in which the stepped inclined ventilation pipe 1 is attached to a wall 7 of a wooden house under construction, and the stepped inclined ventilation pipe 1 is inserted into a through hole 8 formed in the wall 7 on the outdoor side. The flange 2 is fixed to the wall component 9 by nailing. When the flange 2 is fixed to the wall component 9, the wall component 9 is previously configured vertically, so that the lower side 10 of the stepped inclined ventilation pipe 1 in a side view is set at a set angle, that is, in this embodiment, a horizontal plane ( The cylindrical shaft (p) is fixed to the wall 7 at an angle of about 1.3 ° with respect to h), with the outer end side inclined at a low angle. The pipe 3 of the stepped inclined ventilation pipe 1 projects to the outdoor side and the indoor side.

A ventilation hood 11 is attached to a protruding portion of the stepped inclined ventilation pipe 1 on the outdoor side to prevent the invasion of wind and rain and the invasion of insects and birds. In this case, a spiral pipe duct 12 is connected to the indoor end side. Since the connection is formed with the chamfered 6 diameter of the insertion portion 5 of the pipe 3 is small, easy to connect the duct 12. In addition, the insertion amount of the duct 12 collides with the step 4 to determine the amount of insertion without excess or deficiency. At the fitting portion between the pipe 3 and the duct 12, the inner surface of the pipe 3 and the outer surface of the duct 12 are in close contact.

  FIG. 4 shows a second embodiment. As shown in an exaggerated manner in the drawing, a surface s1 on the outer end side and a surface s2 on the inner end side of the pipe 3 are formed parallel to the flange 2 like surfaces q1 and q2. Sometimes. When formed in this manner, the end face faces forward, so that the operator can easily fit the ventilation hood 11 and the duct 12 accurately.

  Although the embodiment has been described above, the flange 2 and the pipe 3 may be made of steel such as stainless steel. The position of the flange 2 and the dimensions of the flange 2 and the pipe 3 are basically arbitrary. The means for fixing the flange 2 to the wall 7 is not limited to nailing. The stepped inclined ventilation pipe 1 can be used in places other than a wooden house, and can be used in places other than ventilation, for example, in places where pipes and wires penetrate through walls.

Perspective view Side view Side view by cross section showing usage state in cross section Side view schematically showing (second embodiment)

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Stepped inclined ventilation pipe 2 Flange 3 Pipe 4 Step 5 Insertion part 6 Chamfer 7 Wall 8 Through hole 9 Wall component 10 Lower side of pipe side view 11 Ventilation hood 12 Duct

Claims (6)

  Equipped with a flange fixed to the wall component and a pipe penetrated therethrough, the pipe has a length protruding outside and inside the wall and has a step on the inner end side to form a small diameter duct insertion part A stepped inclined ventilation pipe, wherein a lower side of the pipe in a side view is fixed to an outer end side lower and an inner end side higher than a horizontal plane on a flange having a surface arranged vertically.   The stepped inclined ventilation pipe according to claim 1, wherein the step is formed at a position from an inner end side of the pipe to determine a fitting length with a duct connected to the pipe.   The stepped inclined ventilation pipe according to claim 1, wherein the step serves as a stopper of a duct inserted from an inner end side of the pipe.   The stepped inclined ventilation pipe according to any one of claims 1 to 3, wherein a material of the flange and the pipe is a synthetic resin.   The inclined ventilation pipe with a step according to any one of claims 1 to 4, wherein the step is about the thickness of the pipe. The inclined ventilation pipe according to any one of claims 1 to 5, wherein an outer end side surface and an inner end side surface of the pipe are formed in parallel with a surface of the flange.

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