JP2003201742A - Ventilation structure of exterior wall and attic space - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation structure of an exterior wall and an attic space capable of simultaneously venting the attic space when the inside of the exterior wall is ventilated and smoothly discharging a waterdrop to the outside of an exterior wall body even if the condensation occurs to the outside of the exterior wall body to flow into part of a connecting port or even if the air outside mixed with rain water blows into the exterior wall from a venting section to adhere the waterdrop to the part of the connecting port. <P>SOLUTION: The exterior wall 4 is constituted by setting an external facing member 3 to the outside of the exterior wall body 1 through a ventilation gap 2. A vent opening connected to the ventilation gap 2 is provided to the lower end of the exterior wall 4. A vent section 5 connected to the ventilation gap 2 is provided to the upper end of the exterior wall 4. The connecting port 7 for connecting the ventilation gap 2 to the attic space 6 is formed in the exterior wall body 1. An inclined plane 8 inclined downward to the ventilation gap 2 side is formed in the lower surface of the connecting port 7. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a ventilation structure for an outer wall and an attic space.

[0002]

2. Description of the Related Art Conventionally, an outer wall is constructed by arranging an exterior material on the outer surface side of an outer wall body of a building through a ventilation gap, and a ventilation opening communicating with the ventilation gap is provided at a lower end portion of the outer wall and an upper end of the outer wall. There is known a so-called vented outer wall in which a ventilation part communicating with the ventilation gap is provided in the part to ventilate the inside of the outer wall so that dew condensation does not occur in the outer wall.

In this conventional vented outer wall, only the inside of the outer wall is ventilated, and the attic space is not ventilated.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and at the same time, ventilation can be performed in the attic space when ventilation is performed in the outer wall. Condensation occurs and this condensation flows to the communication port,
Alternatively, even if outside air mixed with rainwater blows into the outer wall from the ventilation part and water droplets adhere to the communication port part, this can be smoothly discharged to the outer surface side of the outer wall body, and rainwater can be easily injected from the ventilation part. It is an object of the present invention to provide a ventilation structure for an outer wall and an attic space that can be suppressed by various configurations.

[0005]

In order to solve the above problems, in the ventilation structure for an outer wall and an attic space according to the present invention, an exterior material 3 is arranged on an outer surface side of an outer wall body 1 of a building through a ventilation gap 2. Installed to form the outer wall 4, and the ventilation gap 2 is provided at the lower end of the outer wall 4.
A ventilation opening communicating with the ventilation gap 2 is provided, and a ventilation part 5 communicating with the ventilation gap 2 is provided at an upper end portion of the outer wall 4, and the ventilation gap 2 is provided in the outer wall body 1.
And a space 6 for communicating with the attic space 6, and an inclined surface 8 is formed on the lower surface of the communication opening 7 so as to incline downward toward the ventilation gap 2 side. . With such a configuration, the outside air is ventilated through the ventilation gap 2 in the outer wall 4 to ventilate the inside of the outer wall 4, and at the same time when the inside of the outer wall 4 is ventilated, the communication port 7 is used. The inside of the attic space 6 can also be ventilated. Although the ventilation gap 2 in the outer wall 4 and the attic space 6 are communicated with each other through the communication port 7 as described above, the ventilation in the attic space 6 is performed at the same time as the ventilation in the outer wall 4 is achieved. Temporarily, dew condensation occurs on the outer surface side of the outer wall body 1 and this dew condensation flows to the communication port 7 part, or outside air mixed with rainwater blows into the outer wall 4 from the ventilation part 5 and water drops adhere to the communication port 7 part. Even in this case, the water drop can be received by the lower surface of the communication port 7, can be smoothly discharged to the outer surface side of the outer wall body 1 by the inclined surface 8, and can be discharged to the outside from the ventilation opening at the lower end portion of the outer wall 4. .

In addition, a ventilation path 11 is formed in the ventilation part 5 provided at the upper end of the outer wall 4, the lower end being a lower opening 9 opening to the outside and the upper end being an upper opening 10 opening to the ventilation gap 2, The water return piece 12 is provided so as to project from the inner surface facing the middle of the ventilation path 11, and the water return piece 12 provided on the opposite inner surface is arranged so as to be displaced in the vertical direction.
Is preferably meandered in the vertical direction. With such a configuration, even if the outside air mixed with rainwater blows into the ventilation path 11 from the lower opening 9 of the ventilation part 5, the water return pieces 12 in the upper and lower stages of the ventilation path 11 perform the water return at other stages. As a result, rainwater is suppressed from entering the ventilation gap 2.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on the embodiments shown in the accompanying drawings.

The outer wall 4 of the building is constructed by arranging an exterior material 3 on the outer surface of the outer wall body 1 with a ventilation gap 2 interposed therebetween. The outer wall body 1 is constructed by fixing a crosspiece 14 to the outer surface of the wall frame 13 and fixing a face plate 15 to the outer surface of the crosspiece 14.
A base crosspiece 16 is fixed to the outer surface of the face plate 15, a base plywood 27 is fixed to the outer surface of the base crosspiece 16, and the exterior material 3 is fixed to the outer surface thereof. Here, the base bar 16 interposed between the face plate 15 on the outer surface of the outer wall body 1 and the base bar 16 is vertically long, and the base bar 16 between the face plate 15 and the base bar 16 on the outer surface of the outer wall body 1 is provided. There is a ventilation gap 2 where there is no.

Although not shown, the lower end of the ventilation gap 2 is opened as it is at the lower end of the outer wall 4, and serves as a ventilation opening for communicating the outdoor space with the ventilation gap 2 in the outer wall 4. There is.

A ventilation part 5 is provided at the upper end of the outer wall 4 to communicate with the outdoor space and the ventilation gap 2 in the outer wall 4. Ventilation part 5
Is composed of an inner band member 17 and an outer band member 18 as shown in FIG.

The inner strip 17 is composed of a slanting piece 17b which is slanted downward in a substantially middle portion of the outer surface of the vertical piece 17a and a downward projecting piece 17c which is slanted downward from the lower end of the slanting piece 17b. The return piece 12 is projected, and the vertical piece 17a
The lower inclined piece 17d is provided obliquely downward from the lower end of the vertical inclined piece 17d, the lower L-shaped piece 17e is hung from the tip of the lower inclined piece 17d, and the upper L-shaped piece is extended from the upper end of the vertical piece 17b. 1
7f is projected, and a large number of holes 17g are provided in the lateral piece of the upper L-shaped piece 17f to allow ventilation but prevent insects from entering.

The outer band 18 is composed of water, which is composed of a slanting piece 18b which is slanted downward in a substantially middle portion of the inner surface of the vertical piece 18a in the vertical direction, and a downward projecting piece 18c which is slid downward from the lower end of the slanting piece 18b. The return piece 12 is projected, and the vertical piece 18a
A lower horizontal piece 18d is projected inward from the lower end of the vertical piece, and a locking piece 18e is provided on the upper part of the inner surface of the vertical piece 18a. 18
f is provided.

Then, the vertical piece of the upper L-shaped piece 17f of the inner band 17 is locked to the locking piece 18e of the outer band 18 to combine the inner band 17 and the outer band 18, and in this state, As shown in FIG. 1, the inner band 17 is attached to the upper end portion on the outer surface side of the outer wall 4.
The outer band member 18 is fixed by a fixing tool (not shown). Here, the ventilation path 11 is formed between the inner band member 17 and the outer band member 18, and the lower end portion of the ventilation path 11 is connected to the outdoor space between the lower inclined piece 17d and the lower horizontal piece 18d. It has an opening 9 and also has an upper L-shaped piece 17f.
The hole 17g provided in the horizontal piece of the above is the upper opening 10 opening to the ventilation gap 2. Then, the water return piece 12 provided on the inner band 17 and the water return piece 12 provided on the outer band 17 respectively project from the inner surfaces of the ventilation gap 2 that face each other, and further project from the inner surfaces that face each other. Reversing piece 1
2 are arranged so as to be shifted in the vertical direction, whereby the ventilation path 11 becomes a path meandering in the vertical direction.

The outer wall body 1 is formed with a communication port 7 for communicating the ventilation gap 2 and the attic space 6 with the outer wall body 1. The lower surface of the communication port 7 is inclined downward toward the ventilation gap 2 side. The inclined surface 8 is In the embodiment shown in the accompanying drawings, a communication port 7 is formed across the face plate 15 portion and the crosspiece 14 portion of the outer wall body 1. In this case, the face plate 15
By separating the top and bottom at the communication port 7 portion and the crosspiece 14 at the communication port 7 portion vertically.
5 or between the vertically separated crosspieces 14 may be used as the communication ports 7, or holes may be formed in the face plate 15 and the crosspieces 14 to form the communication ports 7. In the embodiment shown in the accompanying drawings, the face plate 17 is vertically separated at the communication port 7 portion and the crosspiece 14 is vertically separated at the communication port 7 portion. A connection port 7 communicating with the back space 6 can be formed, and the ventilation of the back space 2 through the ventilation gap 2 can be favorably performed.

In the embodiment shown in the accompanying drawings, the upper end portion of the outer wall 4 is a parapet portion 21 that rises above the roof portion 20 of the building, and the inner strip 17 that constitutes the ventilation portion 5 is formed. The outer band 18 and the outer band 18 constitute a decorative material on the outer surface side of the parapet portion 21. Moreover, the upper surface of the parapet part 21 is covered with a head 22.

Since the air in the outer wall 4 rises due to the chimney effect, the outside air flows into the ventilation gap 2 in the outer wall 4 from the ventilation opening at the lower end portion of the outer wall 4, and the air in the outer wall 4 also rises. Is exhausted from the ventilation part 5 of the outer wall 4 to the outdoor space to ventilate the inside of the outer wall 4.

In this way, when the air in the ventilation gap 2 flows to ventilate the outer wall 4, the air in the attic space 6 is also ventilated at the same time through the communication port 7, and the attic space 6 is ventilated. This is also performed, and the occurrence of dew condensation in the outer wall 4 and the attic space 6 is suppressed. In FIG. 1, the alternate long and short dash line indicates the flow of air for ventilation.

On the other hand, if dew condensation occurs in the outer wall 4 on the outer surface side of the outer wall body 1, the dew drops along the outer surface of the outer wall body 1 and is discharged to the outside from the ventilation opening at the lower end of the outer wall 4. However, the dew condensation that has occurred above the communication port 7 on the outer surface of the outer wall body 1 flows down along the outer surface of the outer wall body 1 to reach the upper surface of the communication port 7 and drops downward from the upper surface of the communication port 7 to establish communication. There is a risk of invasion from the lower surface portion of the opening 7 into the attic space 6, but in such a case, the inclined surface 8 provided on the lower surface portion of the communication opening 7 allows smooth discharge to the outer surface side of the outer wall body 1, The gas is discharged to the outside from the ventilation opening at the lower end of No. 4. In addition, even if outside air mixed with rainwater is blown into the outer wall 4 from the ventilation part 5 during wind and rain and water drops adhere to the communication port 7, the water drop is received by the lower surface part of the communication port 7 and smoothed by the inclined surface 8. In addition, it can be discharged to the outer surface side of the outer wall body 1 and discharged to the outside from the ventilation opening at the lower end portion of the outer wall 4.

[0019]

As described above, in the invention according to claim 1 of the present invention, the outer wall is formed by disposing the exterior material on the outer surface side of the outer wall main body of the building through the ventilation gap to form the outer wall. A ventilation opening communicating with the ventilation gap is provided at the lower end, a ventilation section communicating with the ventilation gap is provided at the upper end of the outer wall, and a communication opening communicating the ventilation gap and the attic space is formed in the outer wall body. Since a sloped surface that slopes downward toward the ventilation gap is formed on the lower surface of the outside wall, outside air can be ventilated through the ventilation gap inside the outer wall with a simple structure, and at the time of ventilation inside the outer wall At the same time, it is possible to ventilate the inside of the hut space through the communication port. Also, by connecting the ventilation gap in the outer wall and the hut space through the communication port in this way, at the same time as ventilation in the outer wall, Even though it was designed to ventilate the Even if dew forms and this dew flows into the communication port, or if outside air mixed with rainwater blows into the outer wall from the ventilation section and water drops adhere to the communication port, the water drop is received at the lower surface of the communication port. With the inclined surface, the water can be smoothly discharged to the outer surface side of the outer wall main body and can be discharged to the outside from the ventilation opening at the lower end portion of the outer wall, so that water droplets can be prevented from entering the attic space side.

In addition to the effect of the invention described in claim 1, in the invention described in claim 2, the lower end is a lower opening which is open to the outside in the ventilation part provided at the upper end of the outer wall and the upper end. Forms an upper opening that opens into the ventilation gap, and projects a water return piece from the inner surface facing the middle of this ventilation path, and shifts the water return piece provided on the facing inner surface in the vertical direction. Since the ventilation path meanders in the vertical direction, even if outside air mixed with rainwater blows into the ventilation path from the lower opening of the ventilation part, water return is performed at other stages due to the upper and lower multi-stage water return of the ventilation path, With a simple structure, rainwater is prevented from entering the ventilation gap and the space behind the hut.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an embodiment of the present invention.

FIG. 2 is an exploded side view of an inner band member and an outer band member that constitute a ventilation unit used in the above.

FIG. 3 is a plan view of an inner strip used in the above.

[Explanation of symbols]

1 Outer wall body 2 ventilation gap 3 Exterior materials 4 outer wall 5 ventilation 6 attic space 7 communication ports 8 inclined surface 9 Lower opening 10 Upper opening 11 Ventilation route 12 water return

Claims (2)

[Claims] 1. An outer wall is constructed by arranging an exterior material on the outer surface side of an outer wall body of a building with a ventilation gap interposed therebetween, and a ventilation opening communicating with the ventilation gap is provided at a lower end portion of the outer wall, and an upper end portion of the outer wall is provided. A ventilation part communicating with the ventilation gap is provided, a communication port that connects the ventilation gap and the attic space is formed in the outer wall body, and an inclined surface that slopes downward toward the ventilation gap is formed on the lower surface of this communication port. Ventilation structure for outer walls and attic spaces characterized by 2. A ventilation path having a lower opening that opens to the outside and an upper opening that opens to the ventilation gap is formed in the ventilation part provided at the upper end of the outer wall, and the upper end opens into the ventilation gap. The outer wall and the attic space are characterized in that the water return piece is provided so as to project from the inner surface, and the water return pieces provided on the facing inner surface are arranged vertically offset to meander the ventilation path in the vertical direction. Ventilation structure.