JPH09177198A - Eaves front-ventilating and firep preventive structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely keep a fire preventive function, by providing a ventilation part in which a thermoexpansive material is fixed in the eaves girder direction between the tiles of the eaves front and the arranged part of sheathing roof boards to ventilate a house and regulating the ventilation by the expansion thereof at a fire. SOLUTION: A ventilation part 6 is provided between roof tiles 1 and a waterproof sheet 3 and a thermoexpansive material 7 composed of substances having the same expansive direction is arranged in the ventilation part. In the thermoexpansive material 7, corrugated plates in which a fibrous body like nonwoven cloth treated for a noncombustible material with a binder is impregnated with a graphite foaming agent for instance or coated with the agent, are laminated to form a ventilation pass. And a specified number of these corrugated plates are inserted between oppositely arranged battens and also between the roofing sash 5 and the waterproof sheet 3. Air is conducted through an air passage way in which the whole opening ratio of the thermoexpansive material 7 is preferably made 50% or more. The suction and exhaust under the roof is made possible through the air passage way. In this way, warmth in summer and dewing in winter are prevented by the ventilation and also fire preventive property is also secured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an eaves ventilating / fireproof structure. More specifically, the present invention relates to a new eaves venting / fireproof structure for a building such as a house, which is effective in preventing summer heat and dew condensation in winter and is also excellent as a fireproof structure against fire.

[0002]

2. Description of the Related Art Conventionally, as a roof structure of a building such as a house, a corrugated tile having a good roof appearance is used.
For example, as shown in FIG. 6, a structure in which a corrugated roof tile (c) is directly fixed on a waterproof sheet (a) made of asphalt roofing or underlaying material laid on the base plate (a), or As shown in FIG. 7 and FIG. 8, corrugated roof tiles are provided on the sinking crosspieces (mosquitoes) and the crosspieces (ki) above the decorative asbestos slate (d) and the underlaying material (e) provided on the base plate (a). A structure in which (C) is attached and fixed is known.

[0003]

Although the conventional roof portion fixed with roof tiles has the advantage of using corrugated roof tiles as described above, it is not always satisfactory as a ventilation / fireproof structure for eaves. It wasn't something. This is because, for example, when the corrugated roof tile (c) is directly fixed on the waterproof sheet (a) as shown in FIG. 6, the ventilation layer (h) is formed by the shape of the corrugated roof tile (c) itself. However, in reality, the height (H) is low, and it is difficult for air to pass through. Further, even if the structure shown in FIGS. 7 and 8 is used, the gap between the eaves is small and it is insufficient for ventilation.

Therefore, even if a corrugated roof tile is used, in order to prevent heat in summer and to prevent dew condensation in winter, it is necessary to sufficiently inhale and exhaust air from the eaves to improve ventilation at the eaves. It wasn't done. On the other hand, in such a situation, if the height (thickness) of the ventilation layer is increased, the effect can be obtained.
In this structure, it is possible to increase the height of the pier (ki) to increase the amount of ventilation.

However, if the opening at the end of the eaves for increasing the amount of ventilation is increased, it becomes a passage for sucking flames and smoke at the time of fire, and the fireproofness is a very serious problem. For this reason, until now, a structure has not been realized in which ventilation and fire prevention at the eaves were realized as sufficient measures without contradicting each other.

[0006]

SUMMARY OF THE INVENTION Therefore, the present invention provides an eaves structure that solves the two problems of ventilation and fire prevention as described above. That is, the present invention has a structure in which a ventilation part is provided between the roof tiles of the eaves and the field board arranging part, and moreover, a heat expansion material is arranged in the ventilation part. Provided is an eaves ventilating / fireproof structure (claim 1), which has a fireproof structure made of a heat-expandable material that ventilates and expands in the event of a fire to block ventilation.

Further, according to the present invention, in the above-mentioned structure, a ventilation portion is provided between the roof tile and the waterproof sheet or the underlaying material on the base plate (claim 2), and the heat-expandable material is arranged in the eaves girder direction. It is attached and fixed (Claim 3), the heat-expandable material is a seal-like body, and it is arranged in the ventilation part with a gap (Claim 4), and the heat-expandable material is a corrugated plate-like body. Are laminated to form a ventilation path, and the expansion direction surfaces of the corrugated plates are in contact with each other (Claim 5), and the heat-expandable material is a timber under the roof tile and a floor board arrangement. The heat-expandable material is inserted in the ventilation part between the installation part (claim 6), the heat-expandable material is inserted in the frame material (claim 7), and the heat-expandable material is The aspect is that the foam material is an expansive material (claim 8).

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION With the above-described structure, the present invention is effective in preventing heat in summer and dew condensation in winter, and has an eaves structure which is excellent in fireproofness in case of fire. Therefore, an embodiment of the present invention will be shown below with reference to the drawings, and an embodiment of the present invention will be described in more detail.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of the present invention. For example, as illustrated in FIG. 1, the roof tile (1) is placed between the roof tile (1) and the floor board (2). More specifically, the roof tile (1) and the roof tile (1) are prevented when the roof tile (1) is provided on the sink rail (4) and the rail (5) provided on the waterproof sheet (3) on the base plate (2). A ventilation part (6) is provided between the sheet (3) and a heat expansion material (7) that expands and blocks ventilation in the event of a fire is arranged in the ventilation part (6).

In this example, the heat-expandable material (7) is a corrugated plate (71) as shown in FIG.
Are laminated to form a ventilation path (72), and the expansion direction surfaces of the corrugated plate-like body (71) are in contact with each other, and the crosspiece (5) under the roof tile (1) and the waterproof sheet (3). And between the opposing crosspieces (4).

In FIG. 1 and FIG. 2, the air (A) is
The heat-expandable material (7) is guided through the ventilation path (72) to allow intake and exhaust under the roof. FIG.
It is an example of a cross section of the eaves with the heat-expandable material (7) inserted. To further explain the heat-expandable material (7), for example, a graphite-based foam material is laminated on a corrugated plate-like body (71) formed by impregnating or coating a fibrous body such as a non-woven fabric non-combustible with a binder, An air passage (72) having an overall opening ratio of 50% or more is preferably used. The heat-expandable material (7) has such a property that it starts foaming at a temperature of 150 ° C. or higher and completely blocks the ventilation passage (72) for foam expansion at a temperature of about 300 ° C.
In practice, the heat-expandable material (7) preferably has a thickness (h) of 10 mm or more and a depth (l) of 20 mm or more in the dimensions before expansion shown in FIG.

The size of the heat-expandable material (7) varies depending on the thickness of the flow rail (4), but the thickness of the flow rail (4) is conventionally set in order to ensure a sufficient size of the ventilation layer. From 3 mm to 18 mm or more is considered, and in such a case, the thickness should be set accordingly. Then, a predetermined number of the heat-expandable material (7) is inserted between the facing crosspieces (4).

Of course, in the present invention, the heat expansion material is not limited to the above example. For example, FIG.
The seal-like body may be the thermal expansion material (73) as illustrated in FIG. The seal-like body heat-expandable material (73) can be formed of, for example, a graphite-based foam material, a urethane-based binder, and a viscosity-based filler.

The seal-like heat-expanding material (7
In the case of 3), it is desirable that it is attached or nailed to the lower surface of the pier (5), and that the ventilation part (6) has a thickness (W) of 10 mm or more. Further, as illustrated in FIG. 5, for example, a frame material (8) made of plastic
After actually inserting the heat-expandable material (7) and cutting it to a required length, it may be attached to a predetermined site or fixed by nailing in the same manner as in the case of FIG.

Of course, the present invention is not limited to the above examples. It goes without saying that various modifications are possible in the details.

[0016]

As described above in detail, in the eaves structure of the present invention, a ventilation layer much larger than that of the conventional structure is provided, and the ventilation layer surely has a fireproof function. For this reason, it is possible to ventilate under the roof that is large enough to prevent summer heat and to prevent dew condensation in winter. Will be done.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an example of a structure of the present invention.

FIG. 2 is an exploded perspective view illustrating a laminated heat-expandable material.

FIG. 3 is a sectional view corresponding to FIG.

FIG. 4 is a front view exemplifying a case of a seal-shaped body heat-expandable material.
It is a perspective view.

FIG. 5 is a perspective view illustrating a heat expansion material using a frame.

FIG. 6 is a perspective view showing a conventional structure.

FIG. 7 is a sectional view showing another conventional example.

FIG. 8 is a partial perspective view corresponding to FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 roof tile 2 field board 3 waterproof sheet 4 sinking bar 6 ventilation part 7 heat expansion material 71 corrugated plate-like body 72 ventilation path 73 seal-like body 8 frame body

Claims (9)

[Claims] 1. A structure in which a ventilation part is provided between the roof tile at the eaves side and the field board disposition part, and a heat expansion material is arranged in the ventilation part, and the ventilation is performed under the roof tiles at the eaves side. In addition, the eaves ventilation and fire prevention structure is characterized by having a fire prevention structure with a heat expansion material that expands and blocks ventilation when a fire occurs. 2. The eaves ventilating / fireproof structure according to claim 1, wherein a ventilation portion is provided between the roof tile and the waterproof sheet or underlaying material on the base plate. 3. The eaves ventilation / fireproof structure according to claim 1 or 2, wherein the heat-expandable material is attached and fixed in the eaves girder direction. 4. The eaves ventilating / fireproof structure according to claim 1, wherein the heat-expandable material is a seal-like member and is arranged in the ventilation part with a gap. 5. The heat-expandable material is formed by stacking corrugated plate-like bodies to form an air passage, and the expansion direction surfaces of the corrugated plate-like bodies are in contact with each other. Kano eaves ventilation and fire prevention structure. 6. The eaves ventilating / fireproof structure according to claim 5, wherein the heat-expandable material is inserted into a ventilation part between the slab under the roof tile and the base plate arranging part. 7. The eaves ventilating structure according to any one of claims 1 to 6, wherein the heat-expandable material is inserted and arranged in the frame material. 8. The eaves / fireproof structure according to claim 1, wherein the heat-expandable material is a foam material. 9. The eaves ventilating / fireproof structure according to claim 8, wherein the heat-expandable material is a non-combustible fibrous body impregnated or coated with a foam material.