JPH0813636A - Ventilation end structure of external wall board - Google Patents

Abstract

PURPOSE:To improve the air permeability of the end section of the upper end of an external wall board. CONSTITUTION:A square cylindrical section 33 is bent and formed to the upper section of an end member 31, and air outlets 35 and air inlets 36 are formed intermittently at a plurality of places of both surfaces on the outdoor side and the indoor side of the square cylindrical section 33. An elastic end joiner 38 is pushed and held between the underside of the square cylindrical section 33 of the end member 31 and the upper end section of an external wall board 28. Since a wind on the outdoor side collides with the external surface of the external wall board 28 and rises along the external surface and collides with a girder-eave ceiling 30, a vortex flow is generated near the air outlets 35, air in the square cylindrical section 33 is led out to the outdoor side from the air outlets 35 by the vortex flow, and pressure in the square cylindrical section 33 reaches negative pressure. Accordingly, air (moisture) on the internal surface side of the external wall board 28 is sucked in semi-forcibly into the square cylindrical section 33 from the air intakes 36 on the indoor side of the square cylindrical section 33, and finally led out to the outdoor side from the air outlets 35 by the action of the above-mentioned vortex flow.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation parting structure for an outer wall plate having a ventilation part by interposing a parting member in a gap between an eave ceiling and an upper end portion of the outer wall plate.

[0002]

2. Description of the Related Art In general, in winter, due to the effect of indoor heating, dew condensation is likely to occur on the inner surface of an outer wall plate of a house, and the condensed water often adversely affects the outer wall plate and the base material. In order to suppress such a phenomenon, as shown in FIG.
1, the ventilation layer 12 is formed on the inner surface side, and the eaves ceiling 13
The parting member 14 is interposed in the gap between the outer wall plate 11 and the upper part of the outer wall plate 11, and the moisture that has entered from the indoor side is naturally convected upward through the ventilation layer 12, and as shown by the white arrow, the parting member 14 is formed.
There is a configuration in which the air is discharged from the ventilation port 15 of the above.

[0003]

By the way, in the above-mentioned conventional parting member 14, in order to cover the gap between the eaves ceiling 13 and the upper end of the outer wall plate 11, the outdoor side piece 14a of the parting member 14 is lowered. Since it has a widely hanging shape, the flow path of the air passing through the ventilation port 15 of the parting member 14 is bent in an inverted U shape as shown by a white arrow.
For this reason, there is a disadvantage that the ventilation resistance of the air passing through the ventilation port 15 becomes large, the discharge of the air (humidity) is hindered, and the dew-proofing effect becomes low. In this case, if the external appearance is ignored, it is possible to eliminate the outdoor side piece 14a of the parting member 14 to reduce the ventilation resistance. However, if the parting member 14 is simply provided with the vent hole 15, However, the discharge of air (humidity) cannot be positively promoted, the air discharge performance is limited, and an excellent dew-prevention effect cannot be obtained.

The present invention has been made in consideration of such circumstances, and an object thereof is to positively promote the discharge of air (moisture) from the inner surface side of the outer wall plate to the outside.
An object of the present invention is to provide a ventilation parting structure for an outer wall plate that can enhance the dew-proof effect on the inner surface side of the outer wall plate.

[0005]

In order to achieve the above object, in the ventilation parting structure of the outer wall plate of the present invention, a parting member is provided in the gap between the eaves ceiling and the upper end portion of the outer wall plate to provide air permeability. In this configuration, at least a part of the parting member is formed in a rectangular tube shape so as to form a hollow portion extending along a gap between the eave ceiling and the upper end portion of the outer wall plate, and the rectangular tube portion thereof. Vents are intermittently formed on both the outdoor side and the indoor side (claim 1). In this case, it is preferable that an elastic parting joiner is sandwiched between the rectangular tubular portion of the parting member and the upper end of the outer wall plate (claim 2).

[0006]

According to the structure of claim 1 of the present invention described above, the discharge of air (moisture) from the inner surface side of the outer wall plate to the outside is promoted by the following operation. That is, when the outdoor wind collides with the outer surface of the outer wall plate, at least a part of the wind changes its direction upward and flows upward along the outer surface of the outer wall plate, colliding with the eaves ceiling and becoming a spiral state. The place where this swirl flow occurs is mainly the part between the upper end of the outer wall plate and the eaves ceiling, and since the square tubular part of the parting member is arranged in this part, this square tubular part The outdoor vent (hereinafter referred to as “exhaust”) faces the spiral flow.
In this state, the air in the rectangular tubular portion is pulled out from the exhaust port by the action of the spiral flow, and the pressure in the rectangular tubular portion becomes a negative pressure. As a result, the air (moisture) on the inner surface side of the outer wall plate is semi-forcedly sucked into the rectangular tubular portion from the indoor-side ventilation port of the rectangular tubular portion (hereinafter referred to as "intake port"),
Finally, the action of the above-mentioned swirl flow draws the air out of the exhaust port to the outside.

In this case, by forming the parting member in the shape of a rectangular tube so as to have a thickness in the wall thickness direction of the outer wall plate, the positions of the intake port and the exhaust port formed on both sides of the rectangular tube portion are respectively different. The air (humidity) flow on the inner side of the and the vortex flow of the outdoor wind can be brought close to and face each other, and this form enables the semi-forced discharge of moisture by effectively utilizing the outdoor wind power mentioned above. Becomes

Further, if the elastic parting joiner is sandwiched between the rectangular tubular portion of the parting member and the upper end of the outer wall plate as in claim 2, even if the upper part of the outer wall plate is not aligned, the parting member is not aligned. Even if the gap between the square tubular part of and is uneven, the elastic parting joiner elastically deforms,
It is possible to absorb the unevenness of the upper end of the outer wall plate,
Even after the outer wall plate is attached, the elastic parting joiner can be easily pushed into the gap between the rectangular tubular portion of the parting member and the upper end portion of the outer wall plate.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. First, the configuration around the ventilation parting structure will be described with reference to FIG. A heat insulating material 23 is provided on the back side (outdoor side) of the interior material 22 that constitutes the inner wall surface of the chamber 21, and a ventilation board 24 is provided on the outdoor side of the heat insulating material 23. But the eaves girder 2 that supports the roof 25
6 is attached to the outer surface. This ventilation board 24
An outer wall plate 28 is attached to a base material 27 for sandwiching and fixing the outer wall plate 28 with nails, mounting brackets, etc., and a ventilation layer 29 is formed between the outer wall plate 28 and the ventilation board 24. The ventilation layer 29 is formed so as to cover the entire inner surface of the outer wall plate 28, and the upper portion thereof penetrates the eaves ceiling 30 and communicates with the attic.

Since the air (moisture) rising in the ventilation layer 29 is discharged to the outside through the gap between the upper end of the outer wall plate 28 and the eaves ceiling 30, there is a gap between the upper end of the outer wall plate 28 and the eaves ceiling 30. The parting member 31 is interposed so as to have air permeability. The upper portion of this parting member 31 is shown in FIGS.
As shown in FIG. 1, for example, by bending one metal plate, it is bent into a rectangular tube shape so as to form a cavity 32 extending along the gap between the eaves ceiling 30 and the upper end of the outer wall plate 28. A hanging piece portion 34 that is formed and extends vertically downward from the rear end portion of the lower surface of the rectangular tubular portion 33 is fixed to the base material 27 by nails, screws, or the like.

In this embodiment, the outdoor side surface of the rectangular tubular portion 33 is inclined so as to be directed obliquely downward, and the indoor side surface is bent so that it is located slightly outside the hanging piece portion 34. Vents 35 and 36 are formed intermittently at a plurality of locations on both the outdoor side and the indoor side (hereinafter, the outdoor side vent 35 is referred to as an “exhaust port 35”, and the indoor side vent 3
6 is the "inlet 36"). Further, a baffle piece 37 is formed on the upper edge of the intake port 36 of the rectangular tubular portion 33 so as to horizontally project into the ventilation layer 29, and the air (humidity) rising in the ventilation layer 29 is guided by the baffle piece 37. The piece 37 guides to the intake port 36.

An elastic parting joiner 38 is sandwiched between the lower surface of the rectangular tubular portion 33 of the parting member 31 and the upper end of the outer wall plate 28. This elastic parting joiner 38
Is made of an elastic material such as rubber, and has a hollow portion 39 formed to facilitate compression deformation in the vertical direction. Further, a pattern matching the wall pattern of the outer wall plate 28 is applied to the surface by painting or the like. ing.

The ventilation parting structure constructed as described above is constructed as follows. First, the parting member 31 is attached to the base material 27 with nails, screws, or the like. Then, the outer wall plate 2
8 is attached to the base material 27 by a nail, a mounting bracket or the like.
Then, the elastic parting joiner 38 is pushed and fitted into the gap between the lower surface of the rectangular tubular portion 33 of the parting member 31 and the upper end of the outer wall plate 28. At this time, if necessary, the elastic parting joiner 38 may be coated with an adhesive in advance, and the elastic parting joiner 38 may be bonded to the upper end surfaces of the parting member 31 and the outer wall plate 28 with the adhesive.

According to the ventilation parting structure described above, the discharge of air (humidity) from the inner surface side of the outer wall plate 28 to the outside is promoted by the following actions. That is, when the outdoor wind collides with the outer surface of the outer wall plate 28, at least part of the wind changes its direction upward and flows upward along the outer surface of the outer wall plate 28, colliding with the eaves ceiling 30 and becoming a spiral state. Become. The place where this swirl flow occurs is mainly a portion between the upper end of the outer wall plate 28 and the eaves ceiling 30, and since the rectangular tubular portion 33 of the parting member 31 is arranged in this portion, The exhaust port 35 on the outdoor side of the rectangular tubular portion 33 faces the spiral flow. In this state, the air in the rectangular tubular portion 33 is drawn out from the exhaust port 35 by the action of the spiral flow, and the pressure in the rectangular tubular portion 33 becomes a negative pressure. As a result, the air (moisture) on the inner surface side of the outer wall plate 28 is allowed to flow into the rectangular tubular portion 3
3 is semi-forcedly sucked into the rectangular tubular portion 33 from the indoor-side intake port 36, and finally drawn out from the exhaust port 35 by the action of the above-mentioned spiral flow.

In this case, the upper portion of the parting member 31 is formed in a square tube shape so as to have a thickness in the wall thickness direction of the outer wall plate 28, so that the intake ports 3 formed on both sides of the square tube portion 33.
The positions of 6 and the exhaust port 35 can be brought close to and face the flow of air (moisture) on the inner surface side of the outer wall plate 28 and the vortex flow of the outdoor wind, respectively. As a result, it is possible to extremely effectively generate the air discharging action from the exhaust port 35 due to the swirl flow on the outdoor side and the intake action to the intake port 36 caused thereby, and to maximize the outdoor wind power. The semi-forced discharge of the moisture used for is possible. As a result, the dew prevention effect on the inner surface side of the outer wall plate 28 becomes high,
Aged deterioration of the outer wall plate 28 and the base material 27 due to dew condensation water can be suppressed, and durability can be improved.

The present inventor conducted a test comparing the air (moisture) discharge effect of the ventilation partition structure of the first embodiment with that of the conventional one (FIG. 8). The results are shown in FIG.
The test results show that the ventilation layers 29 on the north and south sides of the building
The ventilation conditions at three points (A, B, C) in the inside are measured with an anemometer, and the point A is the lower end of the ventilation layer 29, and the point B is 0.6 m above the lower end of the ventilation layer 29. , C is 0.3 m below the lower end of the parting member 31. The outdoor wind conditions at the time of measurement were (I) northwest wind 1-2 m / sec, and (II) south-southeast wind 1-2 m / sec. As is clear from the measurement results, the ventilation parting structure of the first embodiment has a better air flow and a higher air (humidity) discharging effect than the conventional structure (FIG. 8). .

Further, in the first embodiment, the parting member 31 is used.
Since the elastic parting joiner 38 is sandwiched between the rectangular tubular portion 33 of the outer wall plate 28 and the upper end portion of the outer wall plate 28, even if the upper end portion of the outer wall plate 28 is not aligned with the rectangular tubular portion 33 of the parting member 31. Even if the gaps between the outer wall plates 28 are not uniform, the elastic parting joiner 38 is elastically deformed, so that it is possible to absorb the unevenness of the upper end portion of the outer wall plate 28.
After the attachment, the elastic parting joiner 38 can be easily pushed into the gap between the rectangular tubular portion 33 of the parting member 31 and the upper end of the outer wall plate 28, and the workability can be improved. Moreover, since various patterns can be applied to the surface of the elastic parting joiner 38 according to the wall pattern of the outer wall plate 28, the appearance can be improved.

Further, in the first embodiment, the rectangular tubular portion 3
By inclining the surface on the outdoor side of 3 obliquely downward, the exhaust port 35 is made to follow the vortex flow of the outdoor wind, and the intake action by the vortex flow is further improved.
Further, a wind guide piece 37 is provided on the upper edge of the intake port 36 of the rectangular tubular portion 33.
Is formed, the direction of the flow of air (moisture) from the ventilation layer 29 to the intake port 36 can be changed more smoothly.

However, the present invention is not limited to this construction, and may be constructed as in the second embodiment shown in FIGS. 6 and 7. That is, in the parting member 40 of the second embodiment, there is no air guide piece at the upper edge of the intake port 36, and there is no inclination of the surface of the square tubular portion 41 on the outdoor side, and the cross section of the square tubular portion 41 is shown. It is bent into a rectangular shape. Except for this point, the first
Same as the embodiment. Also in the second embodiment, it is possible to effectively use the outdoor wind force to efficiently discharge the moisture on the inner surface side of the outer wall plate to the outside, and to enhance the dew prevention effect on the inner surface side of the outer wall plate as compared with the conventional example. be able to.

[0020]

As is apparent from the above description, according to the ventilation parting structure of the present invention, the parting member is formed with a square tubular portion and the vent holes (intake port, exhaust port) are intermittently formed on both surfaces thereof. Since it is formed on the outside, it is possible to effectively use the outdoor wind power to efficiently discharge the moisture on the inner surface side of the outer wall plate to the outside,
The effect of preventing dew condensation on the inner surface side of the outer wall plate can be enhanced, deterioration of the outer wall plate and the base material due to dew condensation water over time can be suppressed, and durability can be improved (Claim 1).

Moreover, since the elastic parting joiner is sandwiched between the rectangular tubular part of the parting member and the upper end part of the outer wall plate, even if the upper end part of the outer wall plate is not aligned with the rectangular tubular part of the parting member. Even if the gap between them is not uniform,
By elastically deforming the elastic parting joiner, it is possible to absorb the unevenness of the upper end part of the outer wall plate, and after mounting the outer wall plate, the elastic parting joiner is cut off between the rectangular tubular part of the parting member and the upper end part of the outer wall plate. It can be easily pushed into the gap and the workability can be improved (claim 2). Moreover, since various patterns can be applied to the surface of the elastic parting joiner in accordance with the wall pattern of the outer wall plate, the appearance can be improved (claim 2).

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a ventilation parting structure showing a first embodiment of the present invention.

FIG. 2 is a partial perspective view of a parting member.

FIG. 3 is a partial perspective view of an elastic parting joiner.

FIG. 4 is a vertical cross-sectional side view of the periphery of the ventilation parting structure.

FIG. 5 is a view for explaining the air (moisture) discharge effect of the ventilation parting structure of the first embodiment in comparison with that of the conventional structure.

FIG. 6 is a vertical sectional side view of a ventilation parting structure showing a second embodiment of the present invention.

FIG. 7 is a partial perspective view of a parting member.

FIG. 8 is a vertical sectional side view of a conventional ventilation parting structure.

[Explanation of symbols]

22 ... Interior material, 23 ... Insulation material, 24 ... Ventilation board, 25
... Roof, 27 ... Base material, 28 ... Outer wall board, 29 ... Ventilation layer,
30 ... Eave ceiling, 31 ... Parting member, 32 ... Hollow part, 33 ...
Square tubular portion, 35 ... Exhaust port (ventilation port), 36 ... Intake port (ventilation port), 37 ... Air guide piece, 38 ... Elastic parting joiner, 40 ... Parting member, 41 ... Square tubular part.

Claims (2)

[Claims] 1. A ventilation parting structure of an outer wall plate, wherein a parting member is interposed in a gap between an eave ceiling and an upper end portion of the outer wall plate to provide air permeability. At least a part of the parting member is the eave ceiling and the outer wall plate. It is formed in a rectangular tube shape so as to form a cavity extending along the gap with the upper end of the, and the vent holes are intermittently formed on both the outdoor side and the indoor side of the rectangular tube portion. Ventilation cut-out structure of the characteristic outer wall plate. 2. The ventilation wall parting structure for an outer wall plate according to claim 1, wherein an elastic parting joiner is sandwiched between a rectangular tubular portion of the parting member and an upper end portion of the outer wall plate.