JPH0238962Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a joint back-up material made of an elastic body and used when applying exterior materials to the exterior walls of buildings, particularly at the joints.

Conventionally, when applying exterior materials to exterior walls, especially corrugated exterior materials with corrugated or irregular waves, with open joints perpendicular to the waves, a considerable thickness of synthetic resin foam, etc. is used. Backup material is used for joints. That is, the above will be explained based on the attached drawings. FIGS. 1 and 2 are cross-sectional views illustrating a conventional construction method for attaching exterior materials to open joints. In FIG. 1, the exterior materials 1 and 2 have their joints forming perforations 3, and are applied to a joint back-up material 4 made of an elastic material such as a synthetic resin foam having a rectangular cross section, and then as shown in FIG. As in, exterior materials 1 and 2
is attached to the steel frame base 5 by tightening with attachment fittings 6, 6. In this case, the joint back-up material 4 sinks, and a corresponding portion of the joint back-up material 4 protrudes into the opening 3 as shown in FIG. In addition, after the sealant 7 is cast, the joint backup material spreads and swells, pushing out the sealant 7 and losing its effect, which often causes rain leaks. Also, although not shown, in conventional joint backup materials, the joint between the joint backup material and another joint backup material forms a plane perpendicular to the surface of the exterior material, resulting in poor sealing at the opening, etc. Rainwater, etc. that entered the pipes entered through gaps in the joints, causing rainwater leaks.

The present invention solves the above-mentioned problems, and the gist of the present invention is to provide a joint back-up material made of an elastic material that is used when applying exterior materials to the exterior walls of buildings with open joints. , a groove is provided as a sealing margin in the direction of the opening formed by the exterior material on the surface in contact with the exterior material in the longitudinal direction of the backup material, and has a width slightly wider than the opening width; This exterior joint backup material is characterized by having sloped surfaces at both ends so that it can be joined with a sawtooth joint.

Hereinafter, the present invention will be described in detail based on the embodiments shown in the drawings, but it goes without saying that the present invention is not limited to the embodiments shown in the drawings.

FIG. 3-1 is a side view of the joint backup material according to the present invention. Figure 3-2 is A- in Figure 3-1.
It is an A-line sectional view. As shown in FIGS. 3-1 and 3, the joint back-up material 11 made of an elastic material such as synthetic resin foam is a case in which an exterior material having a corrugated shape is applied with the joints in the direction perpendicular to the waves being laid out. In addition, it is used as a backing material for the opening part, and therefore it is generally formed as a long piece with a rectangular cross section in the opening direction, and has waveforms 12 and 13 that match the waveform of the exterior material. In the longitudinal direction, a groove 14 having a width slightly wider than the width of the opening is provided so as to match the opening direction according to the present invention, and at both ends, there are sloped surfaces 15, so as to allow a sawtooth joint. 16 are formed.

The joint back-up material according to the present invention is formed as described above, and the installation of the exterior material using this back-up material 11 is shown in the cross section seen from the upper direction in FIGS. 4, 5, and 6. This will be explained with reference to FIG. 7 and a sectional view seen from the side direction of FIG.

In FIGS. 4 and 5, the joint backup material 11 is attached to a steel frame base 15 with adhesive tape, and on the outer surface thereof, a groove 14 slightly wider than the width of the opening is provided in the direction of the opening. Exterior material 16,1
7 is applied to form the transparent part 18, and then
The exterior materials 16 and 17 are tightened together with the backup material 11 by fastening fittings 19 and 20 and attached to the steel frame base 15, and then a sealing material 21 is applied to the space formed by the opening 18 and the groove 14, that is, the sealing space. is filled.

Since the exterior material can be attached as described above, even if the exterior material is tightened with the fasteners, the backup 11 will not protrude, making it possible to secure the required sealing allowance and, moreover, Because the groove width of the back-up material is wider than the width, the sealant can penetrate to the back side of the exterior material.
The adhesive surface between the sealing material and the exterior material becomes larger, and good rain protection can be obtained. Furthermore, even when pasting a thin corrugated iron plate, synthetic resin, etc., by adjusting the depth and width of the groove 14' as shown in Figure 6, it is possible to prevent the sealant from penetrating to the back side of the plate. You can stop the rain.

Furthermore, as shown in the side view in FIG.
24 is pasted, and a corrugated exterior material 25, 2 is attached on top of it.
6 is attached using fastening fittings 27 and 28.
Backup materials 23 and 24 are joined at the overlapped portions of the exterior materials, and the joint portions 23' and 24' are sloped to create a sawtooth joint, and 24' is lowered by the difference in level due to the overlap of the exterior materials. Therefore, when tightening the exterior material, these surfaces are pressed together at the same time, resulting in a close contact state. Therefore, even if damage such as cracks occurs in the sealing material of the groove portion, and rainwater or the like enters through the portion, the waterproof effect can be exerted as a secondary effect.

According to the above, when the present invention is used, when the joints of the exterior material are laid open, construction can be performed with excellent rain protection.

[Brief explanation of the drawing]

FIGS. 1 and 2 are cross-sectional views of the case where the joints of the exterior material are attached to the openings using a conventional joint back-up material. FIGS. 3-1 and 3-2 are side and sectional views of the joint backup material according to the present invention. 4th, 5th, 6th
The figure is a cross-sectional view seen from above, illustrating the installation of exterior material using joint back-up material. FIG. 7 is a sectional view seen from the same side. Explanation of symbols, 1, 2, 16, 17, 25, 26
...Exterior material, 4...Conventional joint backup material,
3...Opening part, 7...Sealing material, 11,2
3, 24... Joint backup material according to the present invention,
14...Groove portion, 15, 16, 23', 24'...Slope surface, 18...Opening portion, 21...Sealing material.

Claims (1)

[Scope of utility model registration request] In a joint back-up material made of an elastic body used when applying a sheathing material to the outer wall of a building with a see-through joint, the back-up material forms a hole in the surface that contacts the sheathing material in the longitudinal direction of the back-up material. A joint back-up for exterior use, characterized in that a groove with a width slightly wider than the width of the opening is provided as a sealing margin, and an inclined surface is provided at both ends of the back-up material in the longitudinal direction so as to enable a sawtooth joint. Material.