JPH04202934A - Ventilating construction for eaves end of roof - Google Patents

Abstract

PURPOSE:To prevent invasion of rain water by providing a first opening part of large area communicating to the outside space on the outside space side of the lower end of a ventilation passage, providing a second opening part of small area communicating to a garret on the garret side of the upper end, and providing a pressure equalizing space between both opening parts. CONSTITUTION:A ventilation passage 32 communicating the outside space and a garret 31 is provided inside an eaves end flashing 24, a first opening part 33 of large area communicating to the outside space is provided on an eaves end flashing fixing tool 23 at the lower end, and a second opening part 34 of small area communicating to the garret 31 is provided on a sheathing plate receiving tool 17 at the upper end on the garret side. A pressure equalizing space B is formed between the outside space A and the garret space C, and where the area of the first opening part 33 between A and B is S1, the area of the second opening part 34 is S2, S1 is set large and S2 is set small. The pressure of the pressure equalizing space 35 is close to the atmospheric pressure, and outside wind pressure energy is radically reduced. Hereby, even at strong wind invasion of rain water can be restrained.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a roof eaves ventilation structure.

[Prior art] As a 1iII structure for ventilating the attic of a building,
There is one as described in Japanese Patent No.-53768. In this conventional technology, ventilation holes are provided at the eaves of the roof to communicate the outside space with the attic.

[Problems to be Solved by the Invention] However, the above-mentioned conventional technology has the problem that while the vent serves as an air circulation path, it also allows rainwater to enter during strong winds.

An object of the present invention is to provide an eaves ventilation structure that ventilates the attic but does not allow rainwater to enter.

[Means for Solving the Problems] The present invention as set forth in claim 1 provides a roof eaves ventilation structure in which a ventilation path is provided at the eaves of the roof to communicate an external space with an attic, and the lower end of the ventilation path is provided outside the roof. A first opening with a large area that communicates with the outside space is provided on the space side, and a second opening with a small area that communicates with the attic is provided on the back side of the shed at the upper end of the ventilation route. An equal pressure space is formed between the opening and the opening.

The present invention according to claim 2 supports the front edge of the shedding board through the shedding board holder on the roof support, fixes the eaves drain fixing device to the outer wall of the building, and connects the shedding board holder and the eaves ditch fixing device. In a roof eave ventilation structure in which an eave drain extends between the eaves and the roof, and a ventilation path is provided on the inner surface of the eave drain to connect the outside space and the attic, the lower end of the ventilation path is located on the outside space side. A first large-area opening that communicates with the outside space is provided in the eaves drain fixture, and a second, small-area opening that communicates with the attic is provided in the shedding board support located at the back of the shed at the upper end of the ventilation route. , an equal pressure space is formed between the first opening and the second opening.

[Function] According to the present invention, an equal pressure space is provided in the middle of the ventilation path that communicates the outside space and the attic, and the ventilation path is directed upward from the outside space side to the back side of the attic. It was set to Therefore, due to the existence of this equal pressure space, it is possible to form an eave ventilation structure that ventilates the attic but does not allow rainwater to enter even during strong winds.

[Example] Fig. 1 is a cross-sectional view showing an embodiment of the present invention, Fig. 2 is a perspective view showing a roofing board receiver, Fig. 3 is a perspective view showing an eaves parting board, and Fig. 4 is an eave sill cutter. FIG. 5 is a perspective view showing the eaves drain fixture.

A building 10 in FIG. 1 has a roof unit 12 mounted on a building unit 11.

The building unit 11 is a box-shaped unit constructed by framing columns and beams, and is constructed by fixing an outer wall panel 15 to a frame material 14 that is stretched between a ceiling beam 13 and a floor beam (not shown).

In the roof unit 12, the shedding board holder 17 is fixed by nailing to the front edge of the shedding board 16, and the lower edge of the eaves cutting board 18 that covers the front edge of the shedding board 16 is fixed to the front edge of the shedding board holder 17. It is placed with an overhang. At this time, the eaves parting board 18 is attached to the upper surface of the front edge side of the shedding board 16 via adhesive tape. A roofing material 20 is fixed to the upper part of the roof board 16.

However, the roof unit 12 is mounted on the building unit 11, the upper mounting part 17A of the sheathing board holder 17 is mounted on the upper surface of the upper flange of the ceiling beam 13, and the lower mounting part 17B of the shedding board holder 17 is attached to the top surface of the roofing board holder 17 using rubber tape. It is covered with a sealing material 21 and fixed to the outer surface of the web of the ceiling beam 13 with screws.

Then, after the eaves drain fixture 23 is nailed and fixed to the exterior wall panel 15 of the building unit 11, the eaves drain 24 is fixed to the shedding board holder 17 and the eave ditch fixture 23. and the eaves drain fixture 23. The eaves drainer 24 has its lower edge bent portion attached to the tip of the eaves edge drainer fixture 23, and its upper edge portion fixed to the front surface of the shedding board holder 17 with screws. A caulking material 25 is filled between the inner surface of the lower edge of the eaves parting board 18 and the outer surface of the upper edge of the eaves drain 24. In addition, there are 26 rain gutters.

However, the shedding board support 17 is a continuous body with a folded cross section as shown in FIG. 2, the eaves parting board 18 is a continuous body with a folded cross section as shown in FIG. 3, and the eaves drain fixture 23 is a continuous body with a folded cross section as shown in FIG. The eaves drain 24 is a continuous body with a folded cross section as shown in FIG. The eave ventilation structure is formed.

That is, in this eaves ventilation structure, a ventilation path 32 that communicates the outside space and the attic 31 is provided on the inner surface side of the eaves drain 24.
A first opening 33 with a large area communicating with the outside space is provided in the eaves drain fixture 23 located at the lower end of the ventilation route 32 on the side of the exterior space, and a first opening 33 with a large area communicating with the exterior space is provided at the lower end of the ventilation route 32 on the side of the shed. A second small area connecting to the attic 31 is installed in the fixture 17.
An opening 34 is provided. And the first opening 33
An equal pressure space 35 is formed between the first opening 34 and the second opening 34 .

Here, the first openings 33 are formed by a plurality of elongated holes provided in the eaves drain fixture 23, and the second openings 34 are formed at rrIj intervals of the plurality of lower attachment parts 17B of the roof board holder 17. It is formed.

Note that the equal pressure space B is formed between the outside space A and the attic space C in FIG. 6, and the first opening 33 between the outside space A and the attic space B When the area of is Sl and the area of the second opening 34 between the equal pressure space B and the attic space C is 82, the pressure P of each of these spaces A, B, and C is
A, PB, and PC are as shown in equation (1) below.

1 + (S2/S 1.) 2...(1
) Therefore, as in the present invention, if Sl is made large and S2 is made small, PB approaches PA, the pressure difference between A- and -8 becomes small, and the pressure in the isobaric space 35 becomes smaller than that of the external space. When the atmospheric pressure approaches, that is, in the equal pressure space 35, the wind pressure energy entering from the external space is rapidly reduced, and the entry of rainwater can be suppressed even during strong winds.

Next, the operation of the above embodiment will be explained.

According to the above embodiment, the equal pressure space 35 is provided in the middle of the ventilation path 32 that communicates the outside space and the attic 31, and the direction of the ventilation path 32 is upward from the outside space side to the back side of the attic. I set it to do this. Therefore, due to the presence of this equal pressure space 35, it is possible to form an eaves ventilation structure that ventilates the attic 31 but does not allow rainwater to enter even during strong winds.

[Effects of the Invention] As described above, according to the present invention, although the attic is ventilated,
It is possible to create a ventilation structure under the eaves that does not allow rainwater to enter.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is a perspective view showing a roof board support, Fig. 3 is a perspective view showing an eaves parting board, and Fig. 4 is a perspective view showing an eaves drain. , FIG. 5 is a perspective view showing the eaves drain fixture, and FIG. 6 is a schematic diagram showing the equal pressure space. 13...Ceiling beam (roof support), j6...Shell board, 17...Shell board receiver, 18...Eave edge cutout board, 23...Eave edge drain fixing device, 24...Eave edge Drainage, 31... Attic, 32... Ventilation route, 33... First opening, 34... Second opening, 35... Equal pressure space. Patent applicant: Sekisui Chemical Co., Ltd. Representative Hiroshi 1) Kaoru Figure 1

Claims (2)

[Claims] (1) In a roof eave ventilation structure in which a ventilation path is provided at the eaves of the roof that communicates between the outside space and the attic, a large-area first ventilation path that communicates with the outside space is located at the lower end of the ventilation path on the outside space side.
A second opening with a small area communicating with the attic was provided at the back of the shed at the upper end of the ventilation route, and an equal pressure space was formed between the first opening and the second opening. A roof eave ventilation structure characterized by: (2) Support the front edge of the shedding board on the roof support via the shedding board holder, fix the eaves drainage fixing device to the outer wall of the building, and place the eave drainage fixture between the shedding board holder and the eave drainage fixture. In a roof eave ventilation structure in which a ventilation path is provided on the inner surface of the eave drain to communicate between the outside space and the attic, the eave drain fixing device located at the lower end of the ventilation path on the outside space side is connected to the outside space. A first opening with a large area that communicates with the attic is provided, and a second opening with a small area that communicates with the attic is provided in the shedding board holder located at the back of the shed at the upper end of the ventilation route, and a second opening with a small area that communicates with the attic is provided. A roof eave ventilation structure characterized by forming an equal pressure space between the second opening and the second opening.