JP6890989B2 - Ventilation structure of the building - Google Patents

Description

The present invention relates to a technique for a ventilation structure of a building.

Conventionally, the technique of ventilation structure of a building is known. For example, as described in Patent Document 1.

Patent Document 1 discloses an eaves ceiling parting line arranged in a gap formed between an eaves ceiling and an outer wall. Two routes (two routes) through which air can flow are formed in the eaves ceiling. The eaves skyline can promote air convection and efficiently ventilate the inside of the building by circulating air from the bottom to the top of the eaves ceiling (inside the building) through the two routes. ..

Further, by improving the ventilation between the eaves ceiling and the outer wall (the eaves ceiling parting) in this way, it is possible to improve the ventilation of the ventilation layer or the like formed inside the outer wall. Ventilation in the ventilation layer inside the outer wall is important for maintaining the quality (strength and life) of the outer wall.

On the other hand, if ventilation is improved from between the eaves ceiling and the outer wall to the upper side (inside the building), there is a possibility that a problem may occur inside the building (the back of the cabin, etc.). For example, the salt contained in the air may accelerate the corrosion of metal members (steel frames, etc.), or rainwater may easily enter the inside of the building.

Japanese Unexamined Patent Publication No. 2010-20316

The present invention has been made in view of the above circumstances, and the problem to be solved is that it is possible to suppress the occurrence of defects due to the ventilation while ensuring the ventilation of the ventilation layer of the outer wall portion. To provide a ventilation structure for a good building.

The problem to be solved by the present invention is as described above, and next, the means for solving this problem will be described.

That is, in claim 1, the eaves portion arranged so as to form a vent for introducing air between the outer wall portion having the ventilation layer and the outer wall portion, the outer wall portion, and the eaves ceiling. A moisture-proof member that covers the vent and the ventilation layer from above and the eaves ceiling portion are attached to the outer wall portion with a gap communicating between the vent and the ventilation layer. The moisture-proof member is mounted on the mounting portion .
Further, in claim 2, a part of the moisture-proof member is sandwiched between the mounting portion and the eaves ceiling portion.

In claim 3 , the outer wall portion is arranged inside the building from the first flat plate-shaped portion and the first flat plate-shaped portion, and forms the ventilation layer between the first flat plate-shaped portion. The second flat plate-shaped portion is provided so that the upper end is located at a position higher than the upper end of the first flat plate-shaped portion, and the moisture-proof member is placed on the second flat plate-shaped portion. It is a thing.

In claim 4 , the moisture-proof member includes an extension portion extending downward from the vent on the outside of the building.

In claim 5 , the moisture-proof member is formed in the form of a flexible sheet.

As the effect of the present invention, the following effects are exhibited.

In claim 1, while ensuring the ventilation of the ventilation layer of the outer wall portion, it is possible to suppress the occurrence of defects due to the ventilation. In addition, the moisture-proof member can be easily positioned.
Further, in claim 2, the moisture-proof member can be easily fixed.

In claim 3 , the moisture-proof member can be easily positioned.

In claim 4 , the diffusion of air can be effectively suppressed. As a result, problems associated with ventilation can be suppressed more effectively.

In claim 5 , the workability of the moisture-proof member can be improved.

The plan view which showed the house which has the ventilation structure which concerns on this embodiment. FIG. 1A is a cross-sectional view taken along the line AA of FIG. Enlarged view of FIG. The perspective view which showed the ventilation structure. Exploded view showing the outer wall and the moisture-proof sheet. An exploded sectional view showing a moisture-proof structure.

In the following, the front-back direction, the left-right direction, and the up-down direction will be defined and described based on the arrows in the figure.

First, the outline of the house H having the ventilation structure S according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2.

House H is a two-story detached house. On the second floor of the house H, a balcony B having a canch structure is provided so as to project laterally from the building body T of the house H. The balcony B mainly includes a balcony floor beam 10, a balcony floor panel 20, and an eaves top 30.

The balcony floor beam 10 shown in FIG. 2 is provided so as to extend outward (in a direction away from the building body T) from the girder 40 of the building body T. A balcony floor panel 20 is arranged above the balcony floor beam 10. The eaves top 30 is arranged below the balcony floor beam 10.

The eaves top 30 is arranged with a gap (vent V described later) between the eaves top 30 and the outer wall 50 of the building body T. By communicating the outside and the inside of the house H (the inside of the balcony B and the ventilation layer 55 of the outer wall portion 50 described later) through the gap, the ventilation inside the house H can be improved.

Next, the ventilation structure S according to the present embodiment will be described in detail with reference to FIGS. 3 to 5. The ventilation structure S is for ensuring ventilation to the inside of the house H (balcony B or the like). The ventilation structure S mainly includes an outer wall portion 50, an eaves ceiling portion 30, an eaves ceiling parting line 60, and a moisture-proof sheet 70.

The outer wall portion 50 is a portion that forms an outer surface of the house H (building body T). The outer wall portion 50 mainly includes an outer wall frame 51, glass wool 52, a heat insulating board 53, an outer wall surface material 54, a ventilation layer 55, an eaves ceiling hanging metal fitting 56, and a hanging tree 57.

The outer wall frame 51 forms the main structure of the outer wall portion 50. Although only a part (upper end portion) of the outer wall frame 51 is shown in FIG. 3 and the like, the outer wall frame 51 is actually formed in an appropriate frame shape.

Glass wool 52 is provided on the outer wall frame 51. A plate-shaped heat insulating board 53 is provided on the outside (left side) of the glass wool 52. The upper end of the heat insulating board 53 is arranged at substantially the same position as the upper end of the outer wall frame 51.

An outer wall surface material 54 is provided on the outside of the heat insulating board 53 with a gap between the heat insulating board 53 and the heat insulating board 53. The upper end of the outer wall surface material 54 is arranged so as to be located below (lower position) than the heat insulating board 53.

In this way, the ventilation layer 55 of the outer wall portion 50 is formed by the gap between the heat insulating board 53 and the outer wall surface material 54. By circulating (ventilating) air through the ventilation layer 55, it is possible to promote the drying of the outer wall portion 50 and maintain the quality (strength, life, etc.) of the outer wall portion 50. An introduction port (not shown) for introducing air into the ventilation layer 55 is formed in the lower portion of the outer wall portion 50.

The eaves suspension metal fitting 56 shown in FIGS. 3 and 5 is a member formed in a substantially rectangular plate shape. The eaves ceiling hanging hardware 56 is arranged immediately above the outer wall surface material 54. One end (right end) of the eaves ceiling hanging metal fitting 56 is appropriately fixed to the outer wall frame 51. The eaves ceiling suspension 56 is arranged so as to extend to the left from the outer wall frame 51 with the plate surface facing forward and backward. The left end portion of the eaves ceiling hanging metal fitting 56 is formed so as to be located to the left of the outer wall surface material 54.

The hanging tree 57 is a portion for fixing the eaves top portion 30. The hanging tree 57 is formed of substantially rectangular parallelepiped wood. The hanging tree 57 is fixed to the left end of the eaves ceiling hanging hardware 56. As a result, the hanging tree 57 is arranged on the outside (left side) of the outer wall surface member 54.

The eaves portion 30 shown in FIGS. 3 and 4 is a portion forming a lower portion (lower surface) of the balcony B. The eaves ceiling portion 30 mainly includes an eaves ceiling base panel 31 and an eaves ceiling surface material 32.

The eaves ceiling base panel 31 is a member that serves as a base for the eaves top portion 30. The eaves ceiling base panel 31 is formed in a horizontally expanding plate shape.

An eaves top surface material 32 is provided on the lower surface of the eaves top base panel 31. The eaves top surface material 32 is arranged so as to cover the entire eaves top base panel 31 from below.

In the eaves ceiling portion 30 configured in this way, the right end portion (right side surface) of the eaves ceiling base panel 31 is appropriately fixed to the left side surface of the hanging tree 57 of the outer wall portion 50. At this time, a gap is secured between the eaves top portion 30 (right end of the eaves top surface material 32) and the outer wall portion 50 (outer wall surface material 54). The gap serves as a ventilation port V for ensuring ventilation inside the house H.

The eaves ceiling parting 60 is a member provided so as to extend between the eaves ceiling portion 30 and the outer wall portion 50. The left end of the eaves roof cutout 60 is fixed to the right end of the eaves top 30 (eave top surface material 32). The right end of the eaves roof cutout 60 is fixed to the outer wall portion 50 (outer wall surface material 54). An inclined surface 61 extending from the lower left to the upper right is formed in the vicinity of the right end portion of the eaves roof cutout 60, and a plurality of through holes 62 (see FIG. 4) are formed in the inclined surface 61.

In this way, the eaves ceiling parting 60 is arranged so as to fill the gap (vent V) between the eaves ceiling portion 30 and the outer wall portion 50. Thereby, the aesthetic appearance of the gap portion can be improved. Since air can circulate through the through hole 62 of the eaves roof cutout 60, even if the eaves roof cutout 60 is arranged, the air permeability to the inside of the house H can be ensured.

The moisture-proof sheet 70 is a sheet-like member having a moisture-proof effect (difficult to permeate moisture). As the material of the moisture-proof sheet 70, an appropriate material such as a polyethylene sheet, a polyethylene non-woven fabric, or a plastic sheet can be used. The moisture-proof sheet 70 is formed to have flexibility.

The moisture-proof sheet 70 shown in FIGS. 3 to 5 is arranged so as to cover the upper end of the outer wall portion 50. Specifically, the moisture-proof sheet 70 is placed on the upper ends of the outer wall frame 51, the heat insulating board 53, the eaves hanging hardware 56, and the hanging tree 57. Further, the left end portion of the moisture-proof sheet 70 is bent downward and is sandwiched between the hanging tree 57 and the eaves ceiling base panel 31.

The moisture-proof sheet 70 arranged in this way covers the upper part of the ventilation layer 55 and the ventilation port V of the outer wall portion 50. At this time, a gap is provided between the upper end of the outer wall surface material 54 and the moisture-proof sheet 70. Therefore, the ventilation layer 55 and the ventilation port V communicate with each other through a gap (space) above the outer wall surface material 54.

Next, the outline of the construction method of the ventilation structure S will be described with reference to FIGS. 4 to 6.

Of the outer wall portion 50, the outer wall frame 51, the glass wool 52, the heat insulating board 53, and the outer wall surface material 54 are assembled to each other in advance to form an integrated member (outer wall panel). First, the eaves ceiling hanging hardware 56 and the hanging tree 57 are fixed to the outer wall panel (outer wall frame 51, etc.) (see FIG. 5).

Next, the moisture-proof sheet 70 is placed on the upper end of the outer wall portion 50 (see FIGS. 5 and 6). At this time, the moisture-proof sheet 70 is fixed to the upper end of the outer wall frame 51 by an adhesive tape.

Next, the left end of the moisture-proof sheet 70 is bent (see FIG. 6). The left end portion of the moisture-proof sheet 70 extends downward along the left side surface of the hanging tree 57.

Next, the eaves ceiling base panel 31 of the eaves roof portion 30 is fixed to the left side surface of the hanging tree 57 (see FIG. 6). At this time, the left end portion of the moisture-proof sheet 70 is sandwiched and fixed between the eaves ceiling base panel 31 and the hanging tree 57.

Finally, the eaves ceiling parting 60 is attached so as to cover the gap (vent V) between the eaves top 30 and the outer wall 50 (see FIG. 4).

In this way, when the eaves ceiling base panel 31 is fixed to the hanging tree 57, the moisture-proof sheet 70 is sandwiched and fixed between the eaves ceiling base panel 31 and the hanging tree 57 to fix the moisture-proof sheet 70. It can be easily fixed. Further, by using the moisture-proof sheet 70 having flexibility, the workability can be improved.

Next, the state of ventilation of the building by the ventilation structure S configured as described above will be described.

The air introduced into the ventilation layer 55 from the introduction port (not shown) formed in the lower part of the outer wall portion 50 flows upward through the ventilation layer 55 and passes through the upper part of the outer wall material 54 to the ventilation port V. Is discharged from. At this time, since the bent moisture-proof sheet 70 can guide the air from the ventilation layer 55 to the ventilation port V, the moisture-containing air of the outer wall portion 50 can be quickly discharged.

Further, the air outside the house H circulates from the lower side to the upper side through the vent V (through hole 62 of the eaves ceiling cutoff 60) and is introduced into the house H. Here, since the moisture-proof sheet 70 is arranged above the vent V, the air introduced from the vent V is less likely to diffuse inside the house H. In particular, in the present embodiment, since the left end portion of the moisture-proof sheet 70 is bent downward, the diffusion of air to the left is effectively suppressed.

In this way, by suppressing the diffusion of the air introduced from the vent V, the corrosion of metal members (steel frames, etc.) due to the salt contained in the air can be suppressed, and the moisture in the air can be absorbed inside the house H. It is possible to suppress the scattering to the air. Thereby, it is possible to easily maintain the quality (strength, life, etc.) of the house H.

As described above, the ventilation structure S of the house H (building) according to the present embodiment is
An outer wall portion 50 having a ventilation layer 55 and
An eaves top portion 30 arranged so as to form a vent V capable of introducing air between the outer wall portion 50 and the eaves top portion 30.
A moisture-proof sheet 70 that covers the ventilation port V and the ventilation layer 55 from above with a gap communicating the ventilation port V and the ventilation layer 55 between the outer wall portion 50 and the eaves ceiling portion 30. (Damp proof material) and
Is provided.

With such a configuration, it is possible to suppress the occurrence of defects due to the ventilation while ensuring the ventilation of the ventilation layer 55 of the outer wall portion 50. That is, while communicating the ventilation port V and the ventilation layer 55, the diffusion of air introduced from the ventilation port V can be suppressed by the moisture-proof sheet 70. As a result, it is possible to suppress the occurrence of various problems due to salt and moisture contained in the air introduced from the vent V. Such a ventilation structure S is particularly useful in coastal areas where salt damage is likely to occur.

Further, the outer wall portion 50 is
The first flat plate-shaped part (outer wall material 54) and
It is arranged inside the house H from the first flat plate-shaped portion, forms the ventilation layer 55 with the first flat plate-shaped portion, and the upper end is higher than the upper end of the first flat plate-shaped portion. The second flat plate-shaped portion (outer wall frame 51 and heat insulating board 53) arranged so as to be located,
Equipped with
The moisture-proof sheet 70 is
It is placed on the second flat plate-shaped portion.

With such a configuration, the moisture-proof sheet 70 can be easily positioned. Further, particularly in the present embodiment, the moisture-proof sheet 70 can be easily fixed by fixing the moisture-proof sheet 70 to the outer wall frame 51 with an adhesive tape.

Further, the ventilation structure S has a ventilation structure S.
An attachment portion (eave ceiling hanging metal fitting 56 and hanging tree 57) for attaching the eaves ceiling portion 30 to the outer wall portion 50 is further provided.
The moisture-proof sheet 70 is
It is mounted on the mounting portion.

With such a configuration, the moisture-proof sheet 70 can be easily positioned.

In addition, a part of the moisture-proof sheet 70 is
It is sandwiched between the mounting portion (suspension tree 57) and the eaves top portion 30.

With such a configuration, the moisture-proof sheet 70 can be easily fixed. That is, a part of the moisture-proof sheet 70 can be fixed without using a fixture for fixing the moisture-proof sheet 70. In particular, in the present embodiment, the moisture-proof sheet 70 is sandwiched between the eaves top 30 and the hanging tree 57, so that the moisture-proof sheet 70 is also fixed together when the eaves roof 30 is fixed to the hanging tree 57. Can be done.

Further, the moisture-proof sheet 70 is
On the outside (left side) of the house H with respect to the vent V, an extension portion (the left end portion of the moisture-proof sheet 70) extending downward is provided.

With such a configuration, the diffusion of air can be effectively suppressed. As a result, problems associated with ventilation can be suppressed more effectively.

Further, the moisture-proof sheet 70 is
It is formed in the form of a flexible sheet.

With such a configuration, the workability of the moisture-proof sheet 70 can be improved. That is, since the moisture-proof sheet 70 can be arbitrarily bent, it becomes easy to tolerate dimensional errors and assembly errors of each part on which the moisture-proof sheet 70 is installed (attached).

The house H according to the present embodiment is an embodiment of the building according to the present invention.
Further, the moisture-proof sheet 70 according to the present embodiment is an embodiment of the moisture-proof member according to the present invention.
Further, the outer wall surface material 54 according to the present embodiment is an embodiment of the first flat plate-shaped portion according to the present invention.
Further, the outer wall frame 51 and the heat insulating board 53 according to the present embodiment are one embodiment of the second flat plate-shaped portion according to the present invention.
Further, the eaves hanging metal fitting 56 and the hanging tree 57 according to the present embodiment are one embodiment of the mounting portion according to the present invention.
Further, the left end portion of the moisture-proof sheet 70 according to the present embodiment is an embodiment of the extension portion according to the present invention.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above configuration, and various modifications can be made within the scope of the invention described in the claims.

For example, in the present embodiment, a detached house (house H) has been described as an example of a building to which the ventilation structure S is applied, but the present invention can be applied to various other buildings.

Further, the configuration of the outer wall portion 50 shown in the present embodiment is an example, and the configurations of other members can be appropriately changed as long as the ventilation layer 55 is provided.

Further, although the moisture-proof sheet 70 is assumed to have flexibility, the present invention is not limited to this, and the moisture-proof sheet 70 may not have flexibility.

Further, the method of fixing the moisture-proof sheet 70 is not limited to the method according to the present embodiment (a method of fixing with an adhesive tape or a method of sandwiching between the eaves ceiling base panel 31 and the hanging tree 57), and any method can be used. It can be fixed.

Further, although the moisture-proof sheet 70 is arranged so as to cover the ventilation port V and the ventilation layer 55 of the outer wall portion 50 from above, it is not always necessary to cover the entire ventilation port V and the ventilation layer 55. That is, it is also possible to arrange the moisture-proof sheet 70 so as to cover only a part (necessary part) of the vent V or the like.

30 eaves top 31 eaves top panel 32 eaves top surface material 50 outer wall 51 outer wall frame 53 heat insulation board 55 ventilation layer 56 eaves hanging hardware 57 hanging wood 60 eaves ceiling cutout 70 moisture proof sheet

Claims (5)

An outer wall with a ventilation layer and
An eaves portion arranged so as to form a vent that allows air to be introduced between the outer wall portion and the eaves portion.
A moisture-proof member that covers the vent and the ventilation layer from above with a gap communicating the vent and the ventilation layer between the outer wall and the eaves.
An attachment portion for attaching the eaves top portion to the outer wall portion,
Equipped with
The moisture-proof member is
Placed on the mounting part,
Ventilation structure of the building. A part of the moisture-proof member
It is sandwiched between the mounting portion and the eaves top portion.
The ventilation structure of the building according to claim 1. The outer wall portion
The first flat plate and
It is arranged inside the building from the first flat plate-shaped portion, forms the ventilation layer with the first flat plate-shaped portion, and the upper end is located at a position higher than the upper end of the first flat plate-shaped portion. The second flat plate-shaped part arranged like
Equipped with
The moisture-proof member is
Placed on the second flat plate-shaped portion,
The ventilation structure of the building according to claim 1 or 2. The moisture-proof member is
An extension portion extending downward is provided on the outside of the building from the vent.
The ventilation structure of the building according to any one of claims 1 to 3. The moisture-proof member is
Formed in the form of a flexible sheet,
The ventilation structure of the building according to any one of claims 1 to 4.

Images