JP2584897B2 - Ventilation structure of outer wall in wooden building - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation structure for an outer wall of a wooden building, and more particularly, to a column, a base, etc. by ventilating air in a gap formed between a lath base of the outer wall and a heat insulating material. The present invention relates to a ventilation structure for an outer wall in which dew condensation is prevented and the durability of columns, bases, and the like is improved.

[0002]

2. Description of the Related Art Conventionally, the structure of an outer wall of a wooden building such as a wooden house includes a foundation, a base fixed to the foundation, a pillar erected on the foundation, a lath base plate fixed to the pillar, and a lath base plate. A heat insulating material provided with a gap interposed between the base plate and the base plate.

[0003]

However, the conventional structure of the outer wall has been required to enhance the cooling and heating effect of the wooden building, and has a hermetically sealed structure for preventing the inflow of outside air into the room as much as possible. For this reason, the inside of the outer wall, that is, the ventilation between the lath base plate and the heat insulating material is not sufficient, and water vapor is internally condensed on the structural materials such as the pillars and the base and the heat insulating material, and these structural materials are corroded over time. Therefore, there is a problem that the durability is lowered and the heat insulating performance of the heat insulating material is lowered over time.

[0004] Accordingly, an object of the present invention is to prevent the internal dew condensation of water vapor on structural materials such as pillars and bases and heat insulating materials,
It is possible to provide a ventilation structure for an outer wall of a wooden building capable of improving the durability.

[0005]

According to the present invention, a gap is provided between a base for supporting a lath base plate via a column, a predetermined gap provided on the outer surface of the base, and a base for supporting the base. A plurality of mounting bases fixed in the lateral direction and a ventilation member having a number of ventilation holes fixed along a lower end portion of the mounting base, wherein the ventilation member has a U-shaped cross section.
And a longitudinal direction on the upper surface of the base.
And is engaged with the mounting base.
And the above-mentioned ventilation hole,
The upper surface of the base, the upper end of the vertical surface of the base, and the engaging portion
Perforated between the lower end, the ventilation member,
A gap is formed between the upper surface of the base and the mounting base,
The vertical surface of the base is brought into contact with the lower end of the outer surface of the base,
The bottom surface of the base is in contact with the top surface of the foundation, and
The part is brought into contact with the outer surface of the mounting
A gap formed on the back side of the lath base plate through the gap formed between the respective mounting bases, the outside air flowing through the ventilation holes of the ventilation member , being fixed to the attachment base. The above object has been achieved by providing a ventilation structure for an outer wall in a wooden building, characterized in that air is ventilated by passing through.

[0006]

According to the present invention, when outside air flows into the ventilation member from the ventilation hole, the outside air passes through the gap on the back side of the lath base plate via the gap between the respective mounting bases of the base. The air in the gap on the back side can be ventilated.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A ventilation structure for an outer wall of a wooden building according to the present invention will be described below based on an embodiment shown in FIGS. In each of the drawings, FIG. 1 is a perspective view showing an essential part of an embodiment of a ventilation structure of an outer wall in a wooden building of the present invention, and FIG.
FIG. 2 is a sectional view showing a section in a height direction of the ventilation structure of the outer wall shown in FIG. 1.

As shown in FIG. 1, the ventilating structure of the outer wall according to the present embodiment includes a base 3 for supporting a lath base plate 1 through a column 2,
A plurality of mounting bases 5 fixed laterally with a predetermined gap δ ₁ provided on the outer surface of the base 3 and a gap δ ₂ provided between the base 3 and the base 4 supporting the base 3; And a ventilation member 6 having a large number of ventilation holes 6A fixed along the lower end of the ventilation hole 6A. As shown in FIG. 2, a gap δ ₄ is formed between the lowermost lath base plate 1 and the base 3.

Further, as shown in FIG. 2, the ventilation structure of the outer wall includes a heat insulating material 7 erected on the back side (inside) of the lath base plate 1 with a gap δ ₃ interposed therebetween. It is configured to insulate the air from the inside to enhance the indoor cooling and heating effect.

[0010] Thus, the ventilation member 6 is shown in FIGS.
As shown in, formed to engage with the base portion 61 formed in an angle shape exhibiting a U-shaped cross section, in its entire length in the longitudinal direction in the upright I Wataru and the mounting base 5 on the upper surface 61A of the base portion 61 And the engaging portion 62 formed. The engaging portion 62 is provided on the vertical surface 6 of the base 61.
It is located at a predetermined distance outward from 1B. The predetermined dimension is set to a dimension substantially matching the plate thickness of the mounting base 5 as is apparent from FIG. The height of the vertical surface 61B is set to be smaller than the clearance δ ₂ between the mounting base 5 and the foundation 4, and the height of the engaging portion 62
Is engaged with the mounting base 5, the base 6
The first vertical surface 61 </ b> B comes into contact with the outer surface of the base 3. The ventilation hole 6A of the ventilation member 6 is also provided.
Are formed on both the upper surface 61A of the base 61 and the engaging portion 62. The ventilation holes 6A formed in the upper surface 61A of the base 61 are formed in a line in the longitudinal direction at predetermined intervals inside the engagement portion 62 (closer to the vertical surface 61B). The ventilation holes 6A formed in the engaging portion 62 are formed in two rows in the vertical direction at predetermined intervals. However, the ventilation hole 6A of the engagement portion 62 is originally
The purpose is to reduce the material used for the ventilation member 6, and it is not necessary to provide it.

According to the ventilation structure of the outer wall of the present embodiment having the above configuration, ventilation of the inside is promoted as follows.

First, as shown by an arrow in FIG. 2, the outside air flows through a U-shaped gap of the base 61 of the ventilation member 6 at the lower end of the outer wall and is blocked by the vertical surface 61B of the base 61. The mounting bases 5, 5
Flows into the gap [delta] ₁ between. The outside air flowing from the gap δ ₁ rises as shown by an arrow in FIG. 2 through a gap δ ₃ between the lath base plate 1 and the heat insulating material 7 via a gap δ ₄ between the mounting base 5 and the lath base plate 1. Te flows outdoors through the roof truss (not shown) through the gap [delta] _3.

Therefore, according to the ventilation structure of the outer wall of this embodiment, the outside air is always circulated inside the outer wall, that is, the gap δ ₃ formed between the lath base plate 1 and the heat insulating material 7. The water vapor does not condense on the surfaces of the structural material such as the lath base plate 1, the pillars 2, the base 3, and the heat insulating material 7, and these members can be prevented from corrosion and their durability can be improved. In addition, the initial heat insulating performance can be maintained for a long time without lowering the heat insulating performance of the heat insulating material 7.

It should be noted that the present invention is not limited to the above-described embodiment at all, and is all included in the present invention unless departing from the gist of the present invention.

[0015]

The ventilation structure of the outer wall of the wooden building according to the present invention can prevent the internal dew condensation of water vapor on the structural materials such as pillars and bases and the heat insulating material, and can improve the durability thereof. is there.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of an embodiment of a ventilation structure of an outer wall in a wooden building of the present invention.

FIG. 2 is a cross-sectional view showing a cross section in a height direction of the ventilation structure of the outer wall shown in FIG. 1;

[Explanation of symbols]

1 lath plate 2 Column 3 base 4 Basic 5 mounting base 6 venting member 6A vent _{δ 1, δ 2, δ 3} , δ 4 gap

Claims (1)

(57) [Claims] 1. A base for supporting a lath base plate via a column, a predetermined gap provided on an outer surface of the base, and a gap provided between a foundation for supporting the base and a plurality of fixed in the lateral direction. And a ventilation member having a number of ventilation holes fixed along the lower end of the mounting substrate, wherein the ventilation member has a base formed in a U-shaped cross section,
It is erected on the upper surface of the base over its entire length in the longitudinal direction.
And an engaging portion formed to engage with the mounting base.
Wherein the vent is the top surface of the base and
Perforated between the upper end of the vertical surface of the base and the lower end of the engaging portion
And, the ventilation member, the upper surface of the base and the mounting base
A gap is formed between the base and the vertical surface of the base outside the base.
Abut on the lower end of the base, with the bottom of the base on the top of the foundation.
Face-to-face, and the engaging portion abuts against the outer surface of the mounting base
In the engaged state, the laminar base plate is fixed to the mounting base, allows outside air to flow through the ventilation holes of the ventilation member, and flows the flowing outside air through the gaps formed between the mounting bases. A ventilation structure for an outer wall of a wooden building, wherein air is ventilated by passing through a gap formed on the back side of the building.