JPH0379500B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement in a method of constructing a ventilation opening for ventilation of an attic.

[Technical background of the invention and its problems]

In general, there are various roof shapes, but in many cases, including the gable roof shown in Fig. 1, two or more ventilation holes 4 are provided in the gable 3 located under the roof 2 of the outer wall 1. The attic is ventilated by circulating outside air to prevent the attic material from rotting due to heat and moisture.

However, in the case of a hipped roof without a gable 3 as shown in Fig. 2, it is not possible to provide a ventilation opening 4 in the gable 3. A ventilation opening 4 is provided in the nokiten 5 that protrudes horizontally between the two to ventilate the attic 6.

This ventilation port 4 is arranged downward and is located in a closet 5 with poor ventilation, so there is a drawback that sufficient ventilation of the attic 6 cannot be carried out. Particularly in recent years, insulation materials such as glass wool are often used in the attic 6, which makes ventilation even worse, making it easy for heat and moisture to get trapped, causing severe damage to the attic material. There was a drawback that the value decreased significantly.

[Purpose of the invention]

The present invention has been developed as a result of various studies in view of the above points, and has been developed to provide a roof ventilation opening that enhances the exhaust effect and provides sufficient ventilation in the attic on roofs without gables such as hipped roofs, and which is easy to construct on-site. The present invention provides a method.

[Summary of the invention]

Generally speaking, the present invention consists of a cylindrical body with a chevron-shaped cutout at the upper end that penetrates the roof board, and a butterfly valve that is bent into an F-shape so as to alternately close the upper end opening of the cylindrical body. A covering body that is movably supported on a shaft and has a ventilation opening on the side is attached to surround the cylindrical body, and the attic air is efficiently ventilated by the shutter action of a butterfly valve depending on the wind direction. be.

[Embodiments of the invention]

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 4 shows a ventilation system according to the present invention,
A rectangular tube-shaped cylinder 8 is erected at the center of the upwardly curved flange plate 7 so as to pass through the flange plate 7. The cylindrical body 8 has a chevron-shaped notch on opposite sides at its upper end, forming openings 9A and 9B, and is a butterfly valve bent into an F-shape so as to alternately close the openings 9A and 9B of the cylindrical body 8. 10 is rotatably supported. Further, bent protrusions are formed on both edges of the upper surface of the flange plate 7.
This is called Mizukaeshi 11, 11.

Reference numeral 12 denotes a cover plate surrounding the periphery of the cylindrical body 8, which includes long side plates 13A, 13A and short side plates 13B, 13.
B is joined into a frame shape, and long side plates 13A, 13A are formed.
Ventilation ports 14A and 14B are opened laterally at the upper side of the cylinder body 8, facing the openings 9A and 9B of the cylinder body 8.

The cylindrical body 8 to which the flange plate 7 is attached and the cover body 12 are made of a corrosion-resistant metal plate such as a stainless steel plate or a copper plate.

Next, a method of constructing a ventilation hole in a tiled roof using the above-mentioned ventilation system will be explained with reference to FIGS. 5 to 9.

In the figure, 15 is a hollow tree installed horizontally at the top of the roof 2, 16 is a rafter placed perpendicularly to the hollow tree 15 and attached diagonally at intervals, 1
Reference numeral 7 denotes a field board installed on top of the rafters 16.

After constructing the roof frame structure in this way, roughly 1
Square through-holes 19 are bored in the shedding board 17 at at least two locations in the middle of the roofing board 8. Next, after wiping tiles 20 on top of the roof board 17 in the same way as usual, a mendoshi tile 21 is placed along the main rib 18. Further, the flat tiles 22 are stacked, for example, in three stages, while being alternately shifted on top of the side door tiles 21. In this case, field board 17
A square through hole 19 is similarly drilled in the side door tile 21 located above the through hole 19 and the first level flat tile 22 above this, and this ventilation hole is also opened. The flat roof tiles 22 in the second and third stages of the forming portion are left unmounted.

Next, as shown in FIGS. 6 and 7, the cylinder 8 shown in FIG. 4 and the cover 1 are placed on top of the ventilation hole forming part.
Incorporate 2. The cylindrical body 8 has a flat roof tile 2 at its lower part.
2. The flange plate 7 is inserted into the through hole 19 opened in the side roof tile 21 and the roofing board 17 to communicate with the attic 6, and the flange board 7 is brought into close contact with the top of the flat roof tile 22. In this case, the flange plate 7 has the same curve as the upper surface of the flat tile 22.

In addition, a frame-shaped cover 12 is placed so as to surround the flange plate 7 to which the cylinder 8 is attached, and the long side plates 13A, 13A are used to cover the second and third tiers of flat plates arranged adjacent to each other. It is attached and fixed by sandwiching the tiles 22 from both ends of the roof tiles 22, 22.

Next, as shown in Figs. 8 and 9, the fourth level of flat tiles 22 is placed on the entire surface, and then the round tiles 22 are placed on top of this.
This is completed by adding 3.

To explain the function of the ventilation holes constructed by the above method, the wind that flows in through one ventilation hole 14B of the cover 12 escapes through the other ventilation hole 14A, as shown in FIG.

At this time, the butterfly valve 1 located on the wind inflow side
One of the valve plates 10B, which is bent in an F-shape, is pushed down by the wind pressure and rotates, blocking one opening 9B of the chevron-shaped cylinder 8, and closing the valve plate 10A on the outflow side of the butterfly valve 10. rotates upward to open the other opening 9A of the cylinder 8. As a result, the moist air in the attic rises through the cylinder 8 and opens the opening 9A.
From A, due to the action of the mist spray, while being sucked in, it is rectified along with the wind in the direction of the arrow, and is efficiently discharged.
Moreover, since the ventilation holes 14A and 14B are provided in the large vent 18 with good ventilation, the attic 6 can be sufficiently ventilated, preventing rotting of the attic material due to heat and moisture and deterioration of the insulation performance of the insulation material due to moisture absorption. It can be prevented for a long period of time. Further, due to the shutter action of the butterfly valve 10, the opening 9B of the cylinder body 8 facing the wind is closed by the valve body 10B, so rain can be prevented from blowing into the cylinder body 8, and the rain can be shut off reliably.

In this case, without the butterfly valve 10, since the inner diameter of the cylinder 8 is large, the wind will swirl around the tip of the cylinder 8, creating turbulent flow and a part of it will flow into the cylinder 8. Humid air cannot be discharged smoothly.

Furthermore, since the cylinder body 8 and the flange plate 7 are integrally joined, rainwater that has blown around the cylinder body 8 flows over the flange plate 7, and is guided to the water return 11 on both sides of the flat tiles 22. It is discharged to the outside from the through hole 19 and prevents it from entering the attic 6, making it possible to reliably shut off the rain.

Therefore, according to the construction method described above, it is possible to utilize a stacked area of 18 large flat roof tiles 22, which have not been used in the past, and to build the ventilation system therein. The construction method is simple, and the ventilation openings serve as an accent as shown in Figure 9, resulting in an excellent design.

The frame-shaped cover 12 is formed to match the number of stacked flat roof tiles 22, and as shown in FIG. A long hole 24 is formed in the joint part of the tile 2 and fixed with a screw 25.
The side plates 13A and 13A were installed at the site according to the width of 2.
It may be possible to adjust the distance between the two.

FIG. 11 shows an embodiment in which the present invention is applied to a metal sheet roof such as a galvanized iron roof. This is done by penetrating the cylindrical body 8 to which the flange board 7 is attached to the roof 2, which has a roof 2 with a galvanized iron board 26 pasted on the roof board 17, and the attic 6 with the flange board 7 attached to the main part 18, which is made by stacking the flap board 27 and the blank board 28. A half-cylindrical metal cover 12 with front and rear openings serving as ventilation holes 14 is attached so as to surround the cylindrical body 8.

In the above embodiment, the cylinder 8 to which the butterfly valve 10 is attached is shown as having a rectangular tube shape, but it may also be cylindrical.

〔Effect of the invention〕

As explained above, according to the ventilation opening construction method according to the present invention, it is possible to easily construct a ventilation opening with a high exhaust effect on a roof without a gable such as a hipped roof, and in addition, it is possible to easily construct a ventilation opening with a high exhaust effect. body and
Since the cover can be formed in advance in a factory, it is easy to work on-site and has remarkable effects such as an excellent appearance.

[Brief explanation of drawings]

Figure 1 is a perspective view of a house showing a conventional gable roof, Figure 2 is a perspective view of a house showing a conventional gable roof, Figure 3 is a sectional view of the ventilation opening in Figure 2, and Figure 4 is a perspective view of a house showing a conventional gable roof. Figures 9 to 9 show one embodiment of the present invention according to the construction procedure. Figure 4 is a perspective view of the ventilation system, Figure 5 is a sectional view of the main body before the ventilation system is installed, Figure 6 is a perspective view of the large breast incorporating the ventilation system, Figure 7 is a cross-sectional view of Figure 6, Figure 8 is a cross-sectional view of the large breast showing the completed state, and Figure 9 is a side view of Figure 8. , FIG. 10 is a perspective view showing an adjustable cover according to another embodiment of the present invention, and FIG. 11 is a sectional view of the main part of a tin roof provided with ventilation holes. 1... External wall, 2... Roof, 3... Gable, 4... Ventilation vent, 6
...Attic, 7...Flange plate, 8...Cylinder, 9A, 9
B...Opening, 10...Butterfly valve, 12...Cover body, 13A, 13B...Side plate, 14, 14A, 14
B... Ventilation vent, 17... Field board, 18... Large breast, 19
...Through hole, 22...Flat tile, 24...Long hole, 26...
Galvanized iron board.

Claims (1)

[Claims] 1 At least in two places in the middle of the large breast, cylinders with chevron-shaped upper ends are erected to communicate between the attic and the outside, and the openings are alternately closed at the upper ends of the cylinders. A method for constructing a ventilation hole in a roof, comprising: rotatably supporting a butterfly valve bent into a ``F'' shape, and attaching a cover body with a ventilation hole opened on the side so as to surround the cylindrical body.