JP2002038631A - Outer wall structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outer wall structure in a steel structure capable of preventing downward shifting of wall surface and causing of heat bridge and having a small thickness of the wall surface. SOLUTION: A bracket 42 is secured to a flange 41 of a steel structure 40 by welding, and a vertical furring strip 50 formed by a C-channel is fixed through a thermal insulating material 46. Urethane is sprayed to coat a connecting part between the bracket 42 and the vertical furring strip 50. After a heat insulation board is mounted, urethane is injected into a slit, and after that, a waterproof sheet is retained on the outer surface of the vertical furring strip 50, a bed board is fixed to the vertical furring strip 50 by a bed board fitting, and a tile is fitted to the bed board.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer wall structure of a steel frame building, and more particularly, to an outer wall structure of an outer heat insulating system in which a heat insulating board made of a synthetic resin foam is interposed between a steel frame and a rim.

[0002]

2. Description of the Related Art Referring to FIGS. 11 (a), 12 and 13, a conventional example of an external heat insulating type outer wall structure in which a foamed synthetic resin heat insulating board is disposed outside a steel frame in a steel structure building. Will be explained.

In each of FIGS. 11 (a), 12 and 13, a C-channel (C-shaped lightweight section steel) 10 is attached to a steel frame (not shown) so as to extend in the vertical direction. A heat insulating board 12 made of a foamed synthetic resin (for example, styrofoam) is provided outside the C channel.

[0004] In FIG. 11 (a), a wooden vertical rim 14 is provided on the outer surface of the heat insulating board 12, and a tex screw (screw with a blade) 16 is screwed into a flange of the C channel 10. A waist edge 14 is fixed to the C channel 10. A ground plate 22 is fixed to the vertical torso 14 with nails (not shown), and a tile 24 is attached to the ground plate 22.

In FIG. 12, a C channel 20 is fixed via an angle 18. A base plate 22 is fixed to the C channel 20 with a metal fitting by screws (not shown), and a tile 24 is attached to the base plate 22.

In FIG. 13, a wooden horizontal rim 26 is fixed to the C channel 10 with screws 28, and a wooden vertical rim 14 is fixed to the horizontal rim 26 by nails 30. A base plate 22 is nailed to the body edge 14 (not shown).
, And a tile 24 is attached to the base plate 22.

[0007]

In the prior art shown in FIG. 11, the flange of the C channel 10 has a small thickness, so that the mounting rigidity of the screw 16 to the C channel 10 tends to be insufficient. For example, when the heat insulating board 12 is thick, or when the weight of the exterior materials (the base plate 22 and the tiles 24) is large, the screws 16 are inclined downward from the horizontal line H as shown in FIG. The outer wall surface tends to slip downward as a whole.

In the outer wall structure shown in FIG. 12, since the C channel 20 is used, the finished thickness of the outer wall is considerably large as is apparent from comparison with FIG. 11 (a).

In both FIGS. 11 and 12, the screw 16 or the angle 18 serves as a thermal bridge, and there is a possibility that the heat insulation performance may be reduced or dew may be caused.

[0010] If the wooden lateral rim 26 is adopted as shown in Fig. 13, there is no problem of the wall sliding down and the thermal bridge, but there is a difficulty in making the building nonflammable. hard.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems and to provide an outer wall structure of a steel frame having a small wall thickness without causing a wall to slide down and a thermal bridge.

[0012]

An outer wall structure according to the present invention is an outer wall structure in which a body edge is fixed to a steel frame via a bracket, and an exterior material is attached to the body edge. And a heat insulating material is interposed therebetween, and a heat insulating board is disposed between the steel frame and the body edge.

[0013] In the outer wall structure of the present invention, the rim is fixed to the steel frame via the bracket, the structure is solid, and the wall does not slip down. Also, since a thermal insulating material is interposed between the steel frame and the rim, no thermal bridge occurs. In addition, because we do not adopt wooden horizontal trunk,
Excellent non-combustibility.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing an outer wall structure according to the first embodiment, FIGS. 2, 3, and 4 are perspective views during construction, and FIG. 5 is a longitudinal sectional view showing the outer wall structure. is there.

One end of a bracket 42 (in this embodiment, the L angle is cut to a predetermined length) is fixed to a flange 41 of a steel frame 40 made of H steel by welding, and the bracket 42 is perpendicular to the steel frame 40. It protrudes toward the front of the wall. The bracket 42 has a bolt insertion hole 44 formed of a long hole.

A vertical body edge 50 made of a C-channel is fixed to the bracket 42 via a small plate-like heat insulating material 46 made of hard rubber or the like. A bolt insertion hole 52 formed of a long hole is provided in the vertical body edge 50, and a heat insulating material 46 is provided.
Is provided with a circular bolt insertion hole 48.

A bolt 54 is inserted through these bolt insertion holes 44, 48, and 52 through a heat insulating ring 56 made of hard rubber or the like, and a nut 60 is tightened through a washer 58. It is firmly fixed to the bracket 42. Since the heat insulating material 46 and the heat insulating ring 56 are interposed, the bracket 42 and the vertical rim 50 are thermally insulated.

As shown in FIG. 2, urethane spraying 62 is applied so as to cover the joint between the bracket 42 and the vertical trunk 50. This is to prevent the distal end side of the angle 42 from being exposed.

Next, as shown in FIGS. 3 and 4, a heat insulating board 64 is disposed between the steel frame 40 and the vertical trunk edge 50. A cut 66 is provided in a portion of the edge of the heat insulating board 64 that interferes with the angle 42. After the heat insulating board 64 is attached, urethane is injected into the cuts 66 and the cuts 66 are closed.

Thereafter, a waterproof sheet 68 is fastened to the outer surface of the vertical rim 50, and the base plate 22 is fixed to the vertical rim 50 using a base plate mounting bracket 69 (FIG. 5). (Not shown in FIGS. 1 to 5).

In such an outer heat-insulating steel frame structure, the vertical rim 50 is firmly fixed to the steel frame 40 via the bracket 42, so that even if the base plate 22 or the tile weight is large, the wall surface may be large. There is no downhill at all. Also,
Urethane is injected into the heat insulating material 46, the heat insulating ring 56, the urethane spray 62, and the cut 66, so that the bracket 42 does not become a thermal bridge at all. Furthermore, it does not use wood and is excellent in nonflammability.

The second embodiment will be described with reference to FIGS. 6 and 7.

In this embodiment, the steel frame 40 has the first
Of the bracket 70 is fixed by welding or the like,
A second bracket 72 is connected to the distal end of the first bracket 70 via a heat insulating material 74 made of hard rubber or the like.

The heat insulating material 74 is formed of the L-shaped bracket 7.
2 so as to abut both the horizontal and vertical pieces of
Although one sheet is used, one L-shaped heat insulating material may be used.

The heat insulating material 74 has a bolt insertion hole 76. A bolt 78 is inserted into the bolt insertion hole 76 and the bolt insertion holes 80 and 82 of the brackets 70 and 72 via a heat insulating ring 79 made of hard rubber or the like, and the brackets 70 and 72 are firmly connected to each other by tightening nuts. Is done. Insulation board 6 as in FIGS.
After arranging 4, the vertical trunk 50 is fixed to the tip end side of the second bracket 72, the base plate 22 is fixed to the vertical trunk 50, and the tile is attached to the base plate 22.

In this embodiment, since the first bracket 70 and the second bracket 72 are thermally insulated by the heat insulating material 74, the second bracket 72
Urethane is not sprayed on the tip of. Insulation board 6
Urethane is injected into the notch of No. 4.

The other structure of the outer wall structure is the same as that of the above-described embodiment, and other reference numerals in FIG. 7 indicate the same parts as those in FIG.

In this outer wall structure, the bracket 70,
72 is connected via a heat insulating material 74 and a heat insulating ring 79, and the brackets 70 and 72 do not become a heat bridge. Of course, the fixing of the vertical waist edge 50 is firm, and there is no sliding down of the wall surface. It is also excellent in nonflammability.

FIGS. 1 to 7 show the fitting of the flat part, but the heat insulating material is used in the corners of the building and the like.

FIG. 8 is a view showing the fitting of the out-going corner.
A first bracket 91 is fixed to a steel frame 90 by welding or the like, and a second bracket 92 is connected to the first bracket 91 via a heat insulating material 93.
4 is fixed to the second bracket 92.

FIG. 9 shows the fitting of the corners, and the vertical body edge 50 is formed via the first and second brackets 70 and 72 and a heat insulating material (not shown) between them. Steel frame 4
It is fixed to 0.

FIG. 10 shows the fitting around the foundation 95. The base 96 composed of the C channel is provided with a steel frame 97.
Are connected to each other via a first bracket 98 and a second bracket 99.
The heat insulating material 100 is interposed between the 9.

[0033]

As described above, in the outer wall structure of the present invention, the fixing of the vertical trunk edge is firm, and the wall does not slip down.
In addition, it has excellent heat insulating properties and non-combustibility, and has a small thickness.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an outer wall structure according to a first embodiment.

FIG. 2 is a perspective view of FIG. 1 during construction.

FIG. 3 is a perspective view of FIG. 1 during construction.

FIG. 4 is a perspective view of FIG. 1 during construction.

FIG. 5 is a longitudinal sectional view showing the outer wall structure of FIG. 1;

FIG. 6 is a perspective view showing an outer wall structure according to a second embodiment.

FIG. 7 is a longitudinal sectional view showing an outer wall structure according to a second embodiment.

FIG. 8 is a perspective view of a protruding corner.

FIG. 9 is a perspective view of a corner.

FIG. 10 is a perspective view of the vicinity of a foundation.

FIG. 11 is a longitudinal sectional view showing a conventional example.

FIG. 12 is a longitudinal sectional view showing a conventional example.

FIG. 13 is a longitudinal sectional view showing a conventional example.

[Explanation of symbols]

 Reference Signs List 40 steel frame 42 bracket 46 heat insulating material 50 vertical waist 54 bolt 56 heat insulating ring 64 heat insulating board 70 first bracket 72 second bracket 74 heat insulating material 79 heat insulating ring

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) E04B 1/80 E04B 1/80 MT

Claims (3)

[Claims] An outer wall structure in which a body edge is fixed to a steel frame via a bracket, and an exterior material is attached to the body edge, wherein a heat insulating material is interposed between the steel frame and the body edge. An outer wall structure, wherein a heat insulating board is provided between the steel frame and the body edge. 2. The outer wall structure according to claim 1, wherein the heat insulating material is interposed between the bracket and the rim. 3. The bracket according to claim 1, wherein the bracket includes a first bracket having a rear end fixed to the steel frame, and a second bracket fixed to the first bracket via a heat insulating material. An outer wall structure, wherein the body edge is fixed to the second bracket.