JPS6332822Y2 - - Google Patents

Description

[Detailed explanation of the idea] This idea concerns the outer wall structure.

The exterior walls of prefabricated houses using the conventional large wall construction method are constructed as shown in FIGS. 1 and 2. A detailed explanation of the construction procedure is as follows.

(1) The lattice beam 1 is constructed of an upper chord member 1a, a lower chord member 1b, a diagonal member 1c, and a grooved crown portion 1d, and is installed between columns (not shown). In this case, an L-shaped wall panel holder 2 is welded and fixed onto the lattice beam 1.

(2) Fit and place the second floor wall panel 3 on the wall panel holder 2 via the groove 3b provided in the lower frame 3a.

(3) Connect the first floor wall panel 4 to the lattice beam 1 using both mounting brackets 5 and 6. That is, one mounting bracket 5 is screwed to the upper end surface of the first floor wall panel 4, and the indoor flange 1e of the grooved crown portion 1d is held between this mounting bracket 5 and the other mounting bracket 6, and both mounting brackets are attached. The first floor wall panel 4 is attached to the lattice beam 1 by connecting the metal fittings 5 and 6 with bolts 7 and nuts 8. Further, a crossbar 9 is fixed to the upper end surface of the first floor wall panel 4 on the outdoor side.

(4) Attach the beam cover 10 to the outdoor side of the lattice beam 1. This beam cover 10 has a recessed step 11 at the upper corner of the outdoor surface, and a beam cover base material 12 is fixed to the upper portion of the back surface. In addition, the Z-shaped drain plate 13
The central horizontal piece 13a is aligned with the upper end surface of the beam cover 10, and the lower vertical piece 13b is fitted into the recessed step 11 and fixed to the beam cover 10 with nails 14. In this case, the outdoor surface of the lower vertical piece 13b and the outdoor surface of the beam cover 10 are aligned on the same plane. These beam covers 1
0 and the drain plate 13 are installed by inserting the upper vertical piece 13c of the drain plate 13 into the fitting groove 3 of the second floor wall panel.
c, and the beam cover base material 12.
The lower surface of the beam cover 10 is placed on the upper end surface of the lattice beam 1, the back surface of the beam cover base material 12 is fixed to the wall panel holder 2 with screws 15, and the lower end of the beam cover 10 is fixed to the crosspiece 9 by nailing.

(5) Cross 1 from the outdoor surface of the lower vertical piece 13b of the Z-shaped draining plate 13 to the upper outdoor surface of the beam cover 10
6 and adhere with epoxy resin.

(6) Fill the joint between the Z-shaped draining board 13 and the second floor wall panel 3 with elastic caulking material 18 via backup material 17.

(7) Fill the joint between the beam cover 10 and the first floor wall panel 4 with caulking material 19.

(8) Avoiding the area of elastic caulking material 18,
Floor wall panel 3, beam cover 10, caulking material 1
9. A paint film layer 20 is laminated by spraying paint onto each outdoor surface of the first floor wall panel 4.

In this way, the coating layer 20 was formed on the outer wall of the building while avoiding the area of the elastic caulking material 18.
Even if the second floor wall panel 3 and the beam cover 1 move relatively toward each other or move away from each other due to the stress applied to the building's outer wall, only the elastic caulking material 18 will expand or contract, and no cracks will occur in the coating layer 20. This is to prevent this from happening. In addition, elastic caulking material 18
The reason why the draining plate 13 is placed on the back of the caulking material 18 is because the coating layer 20 is not provided in the area where the caulking material 18 is provided, so the draining performance is reduced accordingly.
This is to maintain good drainage performance. Furthermore, the cross 16 was glued to the joint between the draining board 13 and the beam cover 10 because the draining board 13 was connected to the beam cover 10.
This is to prevent cracks from occurring in areas of the coating layer 20 corresponding to these joints if they are not firmly fixed. However, since the lower vertical piece 13b of the Z-shaped draining board 13 and the outdoor surface of the beam cover 10 are located on the same plane, the adhesiveness of the cross 16 deteriorates, making it impossible to reliably prevent cracks, and the cross 16 There is a problem in that the area of the coating layer 20 corresponding to the cloth 16 bulges out to the outside, spoiling the aesthetic appearance.

Therefore, the purpose of this invention is to provide an exterior wall structure that can reliably prevent the occurrence of cracks in the coating layer and is also aesthetically pleasing.

An embodiment of this invention will be described with reference to FIGS. 3 and 4. In other words, this outer wall structure
In place of the Z-shaped drain plate 13 shown in the figures and FIG.
A substantially Z-shaped draining plate 21 shown in FIGS. 3 and 4 is used. This draining board 21 has an upper vertical piece 21a, a central horizontal piece 21b, and a lower vertical piece 21c arranged in a Z shape, and a projecting piece 21d horizontally protruding from the central horizontal piece 21b toward the outdoors. 21a into the fitting groove 3c of the second floor wall panel 3, the central horizontal piece 21b is aligned from the upper end surface of the beam cover 10 to the upper end surface of the beam cover base material 12, and the lower vertical piece 21c is inserted into the recessed stepped portion 11. It is fixed with nails 22 along the vertical plane. In this case, the tip of the protruding piece 21d is arranged on the same plane as the outdoor surface of the beam cover 10. Then, the projecting piece 21d and the lower vertical piece 21
An adhesive-impregnated cloth 23 is filled in the recess surrounded by C and the horizontal surface of the recessed step 11, and the outdoor surface of the cloth 23 is arranged on the same plane as the outdoor surface of the beam cover 10. Since the other configurations are the same as those of the conventional example, the same parts are given the same reference numerals and the explanation thereof will be omitted.

In this way, the protruding piece 21d is formed on the drain plate 21, and the protruding piece 21d, the lower vertical piece 21c, and the recessed step portion 11
Since the adhesive-impregnated cloth 23 is filled in the recess surrounded by the horizontal surface of the drain plate 21, the adhesiveness of the cloth 23 is improved. Cracks can be reliably prevented from forming in the area of the coating layer 20 corresponding to the joint of the beam cover 10. In addition, the fit of the cross 23 is improved, that is, the outdoor surface of the cross 23 can be aligned with the outdoor surface of the beam cover 10, so that the area of the coating layer 20 corresponding to the cross 23 bulges toward the outdoor side. This also improves the aesthetic appearance of the building's exterior walls.

As mentioned above, the exterior wall structure of this invention consists of beams,
A wall panel holder installed upright on the beam, a wall panel installed on the wall panel holder and having a fitting groove formed on the outdoor end of the lower end surface, and a covering placed on the outdoor side of the beam. A beam cover whose upper end surface is arranged opposite to the outdoor end of the lower end surface of the wall panel and has a recessed step formed at the upper corner of the outdoor surface; The beam cover base material fixed to the beam cover and the upper vertical piece are fitted into the fitting groove, the central horizontal piece is aligned with the upper end surface of the beam cover, and the lower vertical piece is aligned with the vertical surface of the recessed step. a substantially Z-shaped drain plate in which the tip of a protruding piece that protrudes horizontally from the central horizontal piece to the outdoor side is arranged on the same plane as the outdoor surface of the beam cover; the protruding piece, the lower vertical piece, and the horizontal surface of the recessed step; an adhesive-impregnated cloth filled in a concave area surrounded by so that the outdoor surface is flush with the outdoor surface of the beam cover, and a caulking material filled into the joint between the central horizontal piece of the drain board and the lower end surface of the wall panel. Then, avoid this caulking material and install the wall panel, cloth,
Since it is equipped with a paint film laminated on each outdoor surface of the beam cover, cracks in the paint film layer can be reliably prevented.
It also has the effect of being aesthetically pleasing.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the conventional example, Fig. 2 is an enlarged sectional view of the main part thereof, Fig. 3 is a sectional view showing one embodiment of this invention during construction, and Fig. 4 is a sectional view of the main part after construction. It is a diagram. 1...Lattice beam, 2...Wall panel bracket, 3...
...Second floor wall panel, 3c... Fitting groove, 10... Beam cover, 11... Recessed step, 12... Beam cover base material, 18... Caulking material, 20... Paint film layer, 2
1... Approximately Z-shaped draining plate, 21a... Upper vertical piece, 21
b...Central horizontal piece, 21c...Lower vertical piece, 21d...
...Protrusion piece, 23...Adhesive-impregnated cloth.

Claims (1)

[Scope of utility model registration request] A beam, a wall panel bracket installed on the beam,
A wall panel installed on the wall panel holder and having a fitting groove formed at the outdoor end of the lower end surface, and a wall panel that is covered on the outdoor side of the beam and whose upper end surface is connected to the outdoor end of the lower end surface of the wall panel. A beam cover that is arranged facing each other and has a concave step formed at the top corner of the outdoor surface, a beam cover base material that is fixed to the upper end of the back surface of this beam cover and whose back side is fixed to the wall panel holder, and an upper vertical piece of the beam cover. A protrusion that horizontally projects from the central horizontal piece toward the outdoors by fitting into the fitting groove so that the central horizontal piece is aligned with the upper end surface of the beam cover, and the lower vertical piece is aligned with the vertical surface of the recessed step. A substantially Z-shaped draining plate whose tips are arranged on the same plane as the outdoor surface of the beam cover, and a recess surrounded by the projecting piece, the lower vertical piece, and the horizontal surface of the recessed part are filled to cover the outdoor surface of the beam cover. an adhesive-impregnated cloth aligned flush with the outdoor surface of the panel, a caulking material filled into the joint between the center horizontal piece of the draining board and the lower end surface of the wall panel, and a caulking material, avoiding the caulking material, the wall panel,
External wall structure with a coating layer laminated to each outdoor surface of the cross and beam cover.