JPH08260637A - Garret ventilation structure of building - Google Patents

Abstract

PURPOSE: To ventilate a garret efficiently by simple constitution at low cost without dividing a folded plate for ventilation structure, and to prevent the infiltration of water, etc., to the garret surely even in a cold district and a snowy district in the garret ventilation structure of a building. CONSTITUTION: In a building, in which a roof is roofed with folded plates 2, a plurality of vent holes are formed at each approximately vertically central place of the opposed sidewalls 4, 4 of the folded plate 2. A cover 8 is disposed to the upper sections of the vent holes. Consequently, a garret can be ventilated at places excepting both end sections of the folded plate 2, particularly a central section without dividing the folded plate 2. Ventilating positions can be mounted even at places excepting both end sections and central section of the folded plate 2, thus efficiently ventilating the garret in response to the size of garret structure or the building by simple constitution at low cost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attic ventilation structure for buildings.

[0002]

2. Description of the Related Art As a roof structure of a building, a metal plate roof is widely adopted, and in particular, a folded plate structure for spanning a large span with a single continuous plate is diversified. In a conventional building in which the roof is covered with a folded plate, for example, in the case of 2-3 tatami mats, ventilation face doors are fitted to both ends of the folded plate, and the attic is ventilated through the ventilation face doors. Further, according to the size of the building and the like, as shown in FIG. 3, the folded plate is divided at the central portion to provide ventilation means b so that the central portion of the attic can also be ventilated.

That is, as shown in FIG. 4, the two folded plates a, a are opposed to each other with a slight distance therebetween, and the opposing ends are tight frame c and tight frame receiver d.
To support separately. A water stop door e that prevents rainwater from entering the attic is attached to each end, and a cover f covers the space between the two folding plates a and a from above. To assemble these members, the end portion of the folded plate a and the end portion of the cover f are passed through the bolt g protruding from the upper end of the tight frame c, and a nut or the like is screwed to fasten them together. In addition, a ventilation surface door h having a ventilation opening is fitted in the mountain-shaped space of the tight frame c, and a ventilation surface door portion f1 protruding downward is integrally formed at both widthwise ends of the cover f.

With this structure, as shown in FIG. 3, in the attic space above the ceiling i, ventilation is performed not only at the ventilation surface doors j at both ends but also at the ventilation surface door portion f1 of the central cover f, and the attic space is provided. We are trying to improve ventilation.

[0005]

However, in the above conventional ventilation structure, since the folding plate is divided into two, two tight frame receivers are provided separately from the tight frame receivers d and d at the left and right ends. d and d are required in the central part. Therefore, there are inconveniences such as a complicated roof support structure and a large number of parts. Further, even if a ventilation structure is provided in the central portion, the number of ventilation areas is limited to three, so a more efficient ventilation structure is desired. Further, it is desired to have waterproofness against typhoons and snowfalls, or high waterproofness against so-called so-called leakage caused by impeding water flow in cold regions and snowy regions.

The present invention has been made in view of the above-mentioned conventional problems, and can efficiently ventilate the attic with a simple and inexpensive structure without dividing the folding plate for the ventilation structure. Another object of the present invention is to provide an attic ventilation structure for buildings that reliably prevents water and the like from entering the attic even in cold regions and snowy areas.

[0007]

The present invention has the following configuration to achieve the above object. That is, the invention of claim 1 is a building in which a roof is covered with a folding plate, the folding plate is provided with one or a plurality of ventilation holes, and the ventilation holes are provided above the ventilation holes. This is an attic ventilation structure for buildings, in which a cover for concealing the plan view is provided.

According to a second aspect of the invention, the ventilation hole is
The attic ventilation structure for a building according to claim 1, wherein the at least one inclined side wall of the folded plate is arranged at a substantially vertical center position.

[0009]

According to the invention of claim 1, since the ventilation plate is provided with the ventilation hole and the cover is provided to prevent rain and snow from entering the ventilation hole, the folding plate is divided for the ventilation structure. Without doing so, it becomes possible to ventilate the attic at a place other than both ends of the folded plate (both ends of the roof structure), particularly at the center. Also,
Ventilation points can be provided in areas other than both ends and the center of the folded plate, so that attic ventilation can be efficiently performed according to the attic structure or the size of the building.

Also, in terms of manufacturing, it is possible to retrofit because the existing folded plate need only be drilled, and since the roof support structure can be simplified and the number of parts is greatly reduced, it is cheap and inexpensive. It can also be constructed in a simple structure.

According to the second aspect of the present invention, since the ventilation holes are arranged substantially vertically in the center of the inclined side wall of the folding plate,
Ventilation can be performed without reducing the bending strength of the folded plate.
At the same time, dew condensation on the folding plate and invading rainwater,
Even if it is discharged by flowing along the fold line direction of the fold plate (hereinafter, simply referred to as the fold line direction) and is discharged from the valley bottom of the fold plate, it does not flow into the ventilation hole in the flowing process.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a roof structure according to this embodiment. 2A and 2B are cross-sectional views of the roof structure according to the present embodiment, where FIG. 2A is a cross-sectional view as seen from a direction orthogonal to the fold line direction, and FIG. 2B is a IIb-IIb cross-sectional view in FIG. .

In this embodiment, as shown in FIG. 1, in a building in which the roof is covered with a folded plate 2, an inclined side wall 4 of the folded plate 2 is used.
A plurality of ventilation holes 6 are provided substantially vertically above and below, and the ventilation holes 6 are concealed above the ventilation holes 6 in plan view so as to prevent rainwater, snow, etc. from entering the ventilation holes 6. This is an attic ventilation structure in which a cover 8 is installed.

The structure of each unit will be described below. Folding plate 2
As shown in FIG. 1, it is composed of a zinc steel plate or the like in which irregularities of a substantially isosceles trapezoid are continuous. A plurality of screw insertion holes 10 are provided at predetermined portions on the top surface of the folding plate 2. The folding plate 2 has a tight frame 12 at each of both ends in the folding line direction.
It is supported by a tight frame receiver 14. In addition, as a whole roof, a plurality of folded plates 2 are arranged in the width direction and connected.

The tight frame 12 is a narrow plate member bent so as to follow the uneven shape of the lower surface of the folding plate 2, and supports the end portion of the folding plate 2. A bolt 16 protruding upward is provided on each top surface of the tight frame 12.

The tight frame receiver 14 has a substantially rectangular cross section, and the bottom face of the tight frame 12 is fixed to the upper face thereof. Further, in the space between the tight frame 12 and the upper surface of the tight frame receiver 14, a ventilation surface door 18 provided with, for example, a louver-like ventilation means in which rainwater is unlikely to enter is installed.

The folding plate 2 is fixed to the tight frame 12 by
The end of the folded plate 2 is placed on the tight frame 12, the bolt 16 is inserted into the screw insertion hole 10, and the nut 24 is screwed into the bolt 16 with the felt packing 20 and the washer 22 interposed therebetween.

As shown in FIGS. 2 (a) and 2 (b), the ventilation holes 6 are formed on each of at least one pair of side walls 4, 4 facing each other in the folding plate 2 at substantially the same pitch along the folding line direction. It is a circular hole provided at least near the center of the roof. Further, the ventilation hole 6 is, as shown in FIG.
It is located approximately at a height of (1/2) H with respect to the height H of the folded plate 2, and the water forms a valley bottom 2a between the lowermost end of the ventilation hole 6 and the valley bottom 2a of the folded plate 2. There are enough walls left to flow. The ventilation hole 6 may be provided only on one of the opposing side walls 4 and 4.

As shown in FIG. 1, the cover 8 is a plate member having a substantially rectangular shape corresponding to the longitudinal dimension of the folded plate 2, and is mounted and mounted on the top surfaces of the opposed side walls 4 and 4. Thus, the valley portion between the opposing side walls 4 and 4 is almost completely hidden in a plan view. As shown in FIG. 2 (b),
Both ends 8a, 8a in the width direction of the cover 8 are bent downward,
It hangs on the side walls 4A and 4A adjacent to the side walls 4 and 4.
Further, as shown in FIG. 1, a plurality of screw insertion holes 26 are formed in the portion of the cover 8 facing the top surfaces of the side walls 4 and 4, respectively.
Is provided.

When the cover 8 is attached to the folding plate 2, the bolt 28 is inserted into the screw insertion hole 10 and the screw insertion hole 26.
Through the lower part, and attach the felt packing 2 to the bolt 28.
Nut 24 with 0 and washer 22 interposed
The bolt 16 is screwed to the top surface of the tight frame 12 together with the folding plate 2 at the portion facing the tight frame 12.

Further, in this embodiment, FIG. 1 and FIG.
As shown in (a), at the open ends on both sides in the fold line direction of the valley between the facing slopes 4 and 4, there is a ventilation surface door 3 for insect protection.
0 is fitted, and the ventilation door 30 prevents insects and the like from entering the valley portion from the outside.

According to the present embodiment having the above-mentioned structure, the folding plate 2 is provided with the ventilation hole 6 and the cover 8 prevents water and snow from entering the ventilation hole 6, so that the ventilation structure is improved. The ventilation hole 6 allows the ventilation in the central portion of the attic through the ventilation door 30 without dividing the folding plate 6 into pieces and without leaking rain even during snowfall or typhoon. In addition, ventilation areas (ventilation holes 6) can be provided in areas other than the central portion, so that attic ventilation can be efficiently performed according to the attic structure or the size of the building.

Also in terms of manufacturing, it is possible to retrofit since the existing folded plate need only be drilled.
Since the folding plate 2 does not need to be divided, the tight frame receivers 14 may be installed at two positions on both ends. Therefore, the support structure of the roof can be simplified, the number of parts can be greatly reduced, and the structure can be inexpensive and simple. And, it can be easily applied to already constructed buildings.

Further, since the ventilation holes 6 are arranged at the upper and lower central positions of the side wall 4 of the folding plate 2, the ventilation holes 6 can be provided without reducing the bending strength of the folding plate 2. At the same time, condensed water attached to the folding plate 2, rainwater entering from the ventilation surface doors 30 at both ends flow through the valley bottom 2a of the folding plate 2 without entering the ventilation holes 6, and are discharged. Therefore, it is possible to sufficiently deal with the leakage of soot in cold regions and snowy regions.

The present embodiment is a preferred embodiment of the present invention, and the technical scope of the present invention is not limited to this embodiment.

[0026]

As described above, according to the present invention, in an attic ventilation structure for a building, the attic ventilation can be efficiently performed with a simple and inexpensive structure without dividing the folding plate for the ventilation structure. It can be performed. Further, since it is possible to sufficiently cope with spillage of water, it is possible to reliably prevent water or the like from entering the attic even in cold regions or snowy regions.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a roof structure according to this embodiment.

FIG. 2 is a cross-sectional view of the roof structure according to the present embodiment,
(A) is sectional drawing seen from the direction orthogonal to a folding line direction, (b) is IIb-IIb sectional drawing in (a).

FIG. 3 is a side view schematically showing a conventional attic ventilation structure.

FIG. 4 is an exploded perspective view of a conventional roof structure.

[Explanation of symbols]

 2 Folded plate 4 Side wall 6 Ventilation hole 8 Cover

Claims (2)

[Claims] 1. In a building having a roof covered with a folding plate, the folding plate is provided with one or a plurality of ventilation holes, and the ventilation holes are concealed in plan view above the ventilation holes. Attic ventilation structure for buildings, characterized by the provision of a cover. 2. The attic ventilation structure for a building according to claim 1, wherein the ventilation holes are arranged substantially vertically in a central portion of at least one inclined side wall of the folding plate.