JP3067295U - Thermal insulation structure of the outer wall of a wooden house - Google Patents

Abstract

(57) [Summary] [Problem] To firmly support a plate-like heat insulator on an outer wall with a pillar. SOLUTION: An outer corner portion of a pillar 1 is cut into a rectangular cross section to form a defective portion 11. A plate-like heat insulator 1 such as foamed polyurethane or polystyrene is provided between the defective portions of the columns.
Insert 2. A sealing tape 13 such as butyl rubber is applied to the joint between the heat insulator and the pillar, and a plywood wall panel 15 is fixed to the pillar 10 from above with a screw or a nail.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a heat insulating structure for an outer wall in a wooden house.

[0002]

[Prior art]

 Wooden houses are divided into framed construction methods and panel construction methods (so-called 2x4 construction methods), depending on whether the strength of the building is carried by a frame structure such as columns or beams, or whether it is borne by walls (panels). The framing method, which is a traditional method of construction in Japan, is very popular. However, compared to the panel method, surface stiffness is weaker, and it is necessary to reinforce it with bracing. In addition, in the framing method, since the heat insulating material is installed at the site after the framing such as columns and beams is completed, the heat-insulating work requires a lot of time and construction costs.

In order to solve the drawbacks of the frame construction method, a wall panel such as a plywood is attached between the columns to increase the surface rigidity, and the heat insulator is replaced with a foamed polyurethane instead of the conventional glass wool. There has been proposed a construction method in which heat insulation work is facilitated by using a material formed in a plate-like shape and fitting the same between columns (for example, Japanese Utility Model Registration No. 3052860).

[0004] In this method, the heat insulator is attached to a wall panel in advance, and if the wall panel is mounted between the pillars, the mounting of the heat insulating material is completed, but this method is expensive. Accuracy was required and construction costs were high. In addition, over time, the attached heat insulator may come off the wall panel.

[0005]

[Problems to be solved by the invention]

 The object of the present invention is to make the plate-shaped heat insulator directly supported by a pillar, not by a wall panel, in order to solve such a problem.

[0006]

According to the present invention, a cutout having a rectangular cross section is formed along an outer corner of a shaft such as a pillar or a beam for supporting an edge of a wall panel, and a plate-like cutout is formed in the cutout. The edge of the heat insulator is fitted (claim 1). By doing so, the periphery of the plate-shaped heat insulator can be suppressed from behind, so that it can be firmly fixed between the columns and does not fall off. Therefore, heat insulation can be maintained for many years.

[0007] It is conceivable to attach a crosspiece along the pillar and use this to suppress the plate-like heat insulating material from the back surface. However, this requires a lot of man-hours to attach the crosspiece. Since the notch is cut, the processing cost is low and the accuracy is excellent.

In addition, in the present invention, since the plate-shaped heat insulator is directly supported on the pillar, it is not necessary to attach the heat insulator to the wall panel in advance and attach it together with the wall panel, so that the construction is simple. It is, of course, possible to attach the plate-shaped heat insulator to the back of the wall panel in advance as before, and attach it to the pillar together with the wall panel.

When the heat insulator and the wall panel are separately mounted, it is preferable to attach a seal tape along the joint between the heat insulator and the shaft after mounting the heat insulator (claim 2). For the seal tape, a thick tape (for example, 0.5 to 3.0 mm in thickness) made of, for example, butyl rubber, asphalt, foamed polyurethane, etc. can be used. Easy to do. If the sealing tape is applied in this way, even if a slight step is generated between the surface of the pillar and the surface of the plate-shaped heat insulator, and a gap is formed between the surface of the pillar and the wall panel, the gap is closed with the sealing tape. Can be insulated and the heat insulation does not decrease.

When a shaft material such as a pillar shrinks after a long period of time, a gap is formed between the pillar and the periphery of the heat insulator. However, since the opening of the gap is covered with the sealing tape, the air on the indoor side cannot enter the gap. Therefore, even if such a gap is formed, the heat insulating property hardly decreases.

As the wall panel, structural plywood, gypsum board, or the like can be used. As the heat insulating material, for example, a plate-shaped molded product such as foamed polyurethane resin or polystyrene can be used, which is cut into an appropriate size before use.

This structure can be applied to the outer wall of a wooden house, a roof, a ceiling, and the like.

[0013]

[Embodiment of the invention]

 FIG. 1 shows an outer wall of a wooden house in a horizontal cross section. A pillar 10 has a cutout 11 formed by cutting out an outer corner into a rectangular cross section. A plate-like heat insulator 12 such as foamed polyurethane or polystyrene is fitted between the defective portions of the columns. The thickness of the heat insulator used here is 30 to 60 mm. A thick sealing tape 13 such as butyl rubber is applied to the joint between the heat insulator and the pillar, and a plywood wall panel 15 is fixed to the pillar 10 from above with a screw or a nail.

Reference numeral 16 denotes a stud, which is arranged so as to contact the rear surface of the plate-shaped heat insulator 12.

An exterior finish 19 is provided on the outside of the wall panel 15 so as to form a ventilation layer 17 therebetween. A lining plate 20 is provided inside the pillar 10.

FIG. 3 shows the same outer wall in a vertical cross section. The upper side and the lower side of the wall panel 15 are supported by a girder (beam) 21 and a base 22. As in the case of the pillar 10, a cutout 11 is also provided in these girders and bases, and the edge of the plate-shaped heat insulator 5 is fitted therein.

In the outer wall configured as described above, since there is no gap between the heat insulator 12 and the pillar 10, the air on the indoor side does not come into contact with the wall panel 15, and both the heat insulation and the airtightness are excellent.

When the building has passed over time, the column 10 dries and contracts not only in the longitudinal direction but also in the cross-sectional area. Therefore, a gap 23 is created between the heat insulator 12 and the pillar 10 as shown by a chain line in FIG. However, since the entrance of the gap 23 is closed by the seal tape 13, the air in the gap 23 can be trapped. In this way, good thermal insulation is maintained for a long time.

[Brief description of the drawings]

FIG. 1 is a horizontal sectional view of an outer wall of a wooden house.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a longitudinal sectional view of an outer wall of a wooden house.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Pillar as shaft material 11 Missing part 12 Plate-shaped heat insulator 13 Seal tape 15 Wall panel 21 Beam or beam as shaft material 22 Base as shaft material 23 Gap

Claims (2)

[Utility model registration claims] A wall panel is attached from shaft to shaft, and a plate-like heat insulator in contact with an inner surface of the wall panel is fitted between the shaft and shaft. A heat insulating structure for an outer wall of a wooden house, wherein a cutout having a rectangular cross section is formed along an outer corner of the wooden house, and an edge of the plate-shaped heat insulator is fitted into the cutout. 2. The heat insulation structure for an outer wall of a wooden house according to claim 1, wherein a seal tape is attached along a seam between the plate-shaped heat insulator and the shaft member before attaching the wall panel.