JP2602828Y2 - Ventilation prevention structure of 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 prevention structure for a wooden building, and more particularly to an optimum ventilation prevention structure used for a wooden building employing a heat insulation method.

[0002]

2. Description of the Related Art As a general structure around the floor of a wooden building, a foundation is placed on a concrete foundation,
Pillars, studs and the like are erected on the base at predetermined intervals.
In addition, a large number of joists are arranged in the floor surface forming area surrounded by the base, and a large number of floor boards are supported by these joists. Further, on a vertical wall surface connecting the columns, an interior material is disposed on the indoor side of the columns, and an exterior material is disposed on the outside of the columns.

In order to impart heat insulation to a wooden building having such a structure, for example, a heat insulating material such as glass wool is filled in a wall space defined between pillars and pillars and between an interior material and an exterior material. Alternatively, a plate-like heat insulating material is erected outside the pillar, that is, outside the space in the wall, to provide heat insulation. In the case where a so-called external heat insulation method in which a heat insulating material is erected outside the pillar is employed, the exterior material is attached to the outside of the plate-shaped heat insulating material.

On the other hand, in order to ensure the airtightness at the joint between the wall of the wooden building and the roof, conventionally, as shown in FIG. A notch 6a is formed at the end of the heat insulating material 6, and the inclined rafter 2 is fitted into the notch 6a. No gap is formed in this part.

[0005]

By the way, in a wooden building adopting such a heat insulating method, for example, even if the heat insulation of the wall surface is good, a heat insulation defect is likely to occur at a joint between the floor and the wall surface. . That is, in general, the joist is not always applied in contact with the base, and even if the joist is installed in contact with the base, if the joist is not sufficiently dried, As time elapses, the internal water evaporates, causing the joists to warp.
As a result, a gap is created between the base and the floorboard, as described above. As described above, if a gap is formed between the base and the floor plate, the outside air under the floor enters the space inside the wall, and as a result, there is a problem that the heat insulation performance in the room gradually decreases.

[0006] On the other hand, insulation defects are liable to occur at the joint between the wall having such a heat insulating structure and the roof. That is, in the conventional structure, it is necessary to perform a troublesome operation of forming the notch 6a at the end of the plate-shaped heat insulating material 6. However, if the notch 6a is not cut to the size, a new gap is formed around the notch 6a. Will occur. If a gap is formed in this portion, there is a problem that outside air easily enters from the outdoors to the indoor side such as the back of a cabin, and the heat insulation in the room is reduced.

In view of the above-mentioned circumstances, the present invention makes it possible to reliably prevent the invasion of outside air from under the floor with a simple operation and to prevent the invasion of outside air also to the roof portion in a wooden building employing an insulation method. Another object of the present invention is to provide a ventilation prevention structure for a wooden building, which can further improve the heat insulation performance.

[0008]

Means for Solving the Problems In order to achieve the above object, a ventilation prevention structure for a wooden building according to the present invention comprises a plate-shaped heat insulating material made of a foamed synthetic resin stretched in a plane direction outside a pillar. It is a ventilation prevention structure of a wooden house with heat insulation structure, and the rafter on the roof and the eaves girder to which this rafter was laid
Form between insulation and roofing material placed on rafters
In the gap above the eaves girder formed, a square shape made of foam synthetic resin
Heat insulation to these rafters, eaves girder, insulation or roofing
It is characterized in that it is closely interposed along the eaves girder .

In order to achieve the above object, a ventilation prevention structure for a wooden building according to the present invention is provided.
Placed on the upper surface of the table at predetermined intervals in contact with the base
When arranging floorboards with multiple joists supported,
Small gaps between the floor and the floor
It is made of foam synthetic resin by contacting at least the base and joist
It is characterized in that a horn-shaped heat insulating material is interposed.

[0010]

According to the first aspect of the present invention , a horn-shaped heat insulating material is provided on the upper part of the eaves girder in a portion near the roof.
By arranging, later, insulation or roofing material will be
When placed, rafters, eaves girder and insulation or roofing
The gap between them is covered,
No air enters the room.

Further, according to the present invention, the shop
In addition to preventing outside air from entering at the root,
Outside air will enter the wall through the gap between the table and the floorboard
Even if it is blocked by horn-shaped insulation,
And not.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a basic portion of a wooden building provided with a ventilation prevention structure according to an embodiment of the present invention.

In this embodiment, a base 1 is placed on a cloth base 10.
Reference numerals 1 and 12 are fixed by anchor bolts (not shown). Also, pillars 13 and corner pillars 14 are erected on the base 11, and the pillars are also erected at predetermined intervals around the building. In addition, a plurality of joists 16 are arranged at predetermined intervals between the puller 15 horizontally incorporated in the base 11 and the base 12 arranged in parallel with the puller 15.

On the other hand, floor boards 19 are continuously arranged on the plurality of joists 16, 16 arranged at predetermined intervals to form a floor surface. In a wooden building having such a floor structure, in order to form a heat insulating structure on the wall surface, a plate-like heat insulating material 17 made of a foamed synthetic resin is provided outside the base 11, that is, outside the pillars 13 and the corner pillars 14. Is erected.

Further, a plate-like heat insulating material 18 made of a foamed synthetic resin is similarly provided upright on other wall surfaces. Further, a plurality of underfloor insertion heat insulating materials 20 are arranged on the lower surface of the floor panel 19, and these are elastically supported between the joists 16, 16 or fixed using metal fittings.

The base 1 connecting the pillar 13 and the corner pillar 14
On the base 1, a horn-shaped heat insulating material 21 made of a foamed synthetic resin is interposed so as to be in close contact with the base 11 and the end joist 16 which is close to the base 11 and to make contact with the columns 13 and the corner columns 14. I have.

The rectangular heat insulating material 21 thus arranged
Is located outside the interior material 22 as shown in FIG. 2 and is disposed below the floor plate 19, so that it is not exposed to the indoor side. In addition, when the angular heat insulating material 21 is provided in this manner, the wall space A divided by the pillars 13, the corner pillars 14, the heat insulating material 17 on the wall surface, and the interior material 22,
Outside air from underfloor space S does not enter.

On the base 12 side, the joists 16, 16,... Are arranged at predetermined intervals so as to face the ends.
The horn-shaped heat insulating material 21 is interposed so as to abut against the end of the joist 16 and to abut on the adjacent pillar 14 or the like.

As a result, as shown in FIG.
2 and all the lower corners facing the underfloor space S of the in-wall space B partitioned along the heat insulating material 18 are covered with the angular heat insulating material 21. No outside air is introduced.

As described above, according to this embodiment,
At the corner of the heat insulating material installation area where the airtightness is easily damaged, for example, the infiltration of air from the underfloor space S to the space A or from the underfloor space S to the space B is reliably prevented, so that the indoor heat insulating property is extremely good. Become.

As a material of the square heat insulating material 21 made of such a foamed synthetic resin, a synthetic resin such as polystyrene, polyethylene, polyvinyl chloride, or polyurethane may be used.
It is preferably a foamed plate having a closed cell structure made by foaming 50 times. Among them, it is effective to use a polyethylene foam plate having high rigidity, high heat insulation and high moisture permeability.

Hereinafter, the heat insulating structure at the joint between the wall surface of the wooden building and the roof will be described. In the roof, as shown in FIGS. 4 and 5, a plurality of rafters 32, 32,...

Outside the eaves girder 31, a heat insulating plate 17 made of a foamed synthetic resin that insulates a vertical wall surface is provided upright. Further, in this embodiment, horn-shaped heat insulating materials 34, 34... 34 also made of foamed synthetic resin are interposed between two adjacent rafters 32 along the eaves girder 31, respectively. These heat insulating materials 34 are elastically supported by the two rafters 32, 32.

On the other hand, above the rafters 32, an insulation material 35 between rafters made of a plate-like foamed synthetic resin is disposed. The heat insulating material 35 between the rafters is formed in an inverted convex shape in which the upper part is wider than the lower part, and a step formed substantially at the center is inserted into the rafters 32, 32.

The heat insulating material 35 between the rafters is attached to the rafter 3
5, the upper end of the heat insulating material 34 and the lower end of the heat insulating material 35 between the rafters come into close contact with each other as shown in FIG. 5. Therefore, the gap formed in the upper part of the eaves girder 31 is closed, and there is no possibility that outside air outside enters the indoor side.

Therefore, the airtightness is improved even at the end portion of the roof where the heat insulating material is provided, and there is no possibility that the indoor heat insulating property is impaired. In the above embodiment, the horn-shaped heat insulating materials 21 and 34 are elastically supported between the support members on both sides. However, these may be, of course, adhered by an adhesive or nailed. May be.

Further, in the above embodiment, a wooden building employing the outer heat insulating method has been described, but it is needless to say that the present invention can be applied to a heat insulating structure employing the inner heat insulating method. Further, in the above-described embodiment, the example in which the horn-shaped heat insulating material is provided on both the lower part of the floor and the roof part has been described.

In the above embodiment, the adjacent rafter 3
Although the example in which the heat insulating material 35 between the rafters is disposed on the upper part of the rafters 32 has been described, the member disposed on the heat insulating material 35 between the rafters is not limited to the heat insulating material 35 between the rafters. The present invention can be applied to a case where such a device is provided.

[0029]

As described above, in the ventilation prevention structure for a wooden building according to the first aspect of the present invention, as described above, the heat-insulating deficiencies that are likely to occur in the terminal area of the area where the heat-insulating material is provided are first removed by the roof.
Instead of cutting out some of the insulation on the wall,
At the top, by arranging angular insulation along the eaves girder
So that the heat insulation at this location can be maintained
You.

Further, in the ventilation prevention structure for a wooden building according to the second aspect of the present invention , at least the lower part of the floor is provided.
Place the horn-shaped insulation material in contact with the base and the joist, and
Since the gap of this part is covered with the heat insulating material,
This prevents outside air from entering the wall from under the floor.
Thereby, the indoor heat insulation can be improved.

As described above, according to the present invention, the invasion of outside air from the lower part of the floor or the roof to the room side can be reliably prevented, so that the heat insulation in the room can be further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a lower floor portion of a wooden building adopting the heat insulating structure of the present invention.

FIG. 2 is a sectional view taken along line [2]-[2] in FIG.

FIG. 3 is a sectional view taken along line [3]-[3] in FIG.

FIG. 4 is a perspective view of a roof of a wooden building adopting a heat insulating structure according to an embodiment of the present invention.

FIG. 5 is a cross-sectional view of a roof portion employing the heat insulating structure of the embodiment.

FIG. 6 is a perspective view showing a structure for attaching a heat insulating material installed on a roof to a rafter in a conventional wooden building.

[Explanation of symbols]

 11, 12 Base 16 Joist 19 Floorboard 21, 34 Square heat insulation 31 House girder 32 Rafter 35 Insulation insulation between rafters

Claims (2)

(57) [Scope of request for utility model registration] 1. A ventilation prevention structure for a wooden house provided with an external heat insulating structure in which a plate-like heat insulating material made of a foamed synthetic resin is stretched in the surface direction outside a pillar, wherein a rafter on a roof portion and the rafter are provided. In the gap above the eaves girder formed between the eaves girder and the heat insulating member or roofing material placed on the rafters, a horn-shaped heat insulating material made of a foamed synthetic resin is attached to the rafters and eaves. A ventilation prevention structure for a wooden building, wherein the structure is interposed along the eaves girder in close contact with a girder, a heat insulating member or a roofing material. 2. When the floorboards are arranged on an upper surface of the base on which the pillars are supported and supported by a plurality of joists arranged at predetermined intervals in contact with the base, a gap between the base and the floorboards is provided. 2. The ventilation of a wooden building according to claim 1, wherein a rectangular heat insulating material made of a foamed synthetic resin is interposed at least in contact with a base and a joist so as to close a gap at a lower part of the floor. Prevention structure.