JPH11315588A - Joint seal structure of outer wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve fire resistance without filling a joint part with a refractory material otherwise by filling an outer wall joint gap with a refractory resilient backup material and tightly adhering a seal material on the backup material from the outside to be filled. SOLUTION: A seal backup material 18 comprising a material provided with fire resistance is inserted in a lateral joint part between upper and lower wall panels 8, 8, filling is performed into the gap between siding materials 1, 1 up to a position abutted to a lower lateral frame from the outside, and a seal material 19 is tightly adhered on the outside of the refractory backup material 18 to be filled. The joint part is a double structure of the backup material 18 comprising a refractory material and the normal seal material 19, both are adhered, at the time of a fire, in the case where a flame invades from the outside and transfers to the seal material 19, the seal material 19 is carbonized, but it does not burn out, and fire resistance property is improved together with the backup material 18. Thus, the refractory material need not be filled otherwise, and working man-hours can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint sealing structure for an outer wall.

[0002]

2. Description of the Related Art It is necessary to prevent infiltration of rainwater or the like by filling a sealing material between wall panels on an outer wall of a dry method using wall panels. This filling of the sealing material is usually performed from the outside after the wall panel is attached, but it is usual to attach a backup material inside the sealing member in advance so that the sealing material is located at a predetermined depth position.
Conventionally, a styrene sponge or the like is used as this backup material.

In the method using no backup material, a rubber gasket is bonded in advance to the outer wall panel end face,
A method of bringing the gaskets of the end faces facing each other into close contact with each other has also been considered.

[0004]

In the above method, in the method of using a styrene sponge or the like as a backup material, the backup material has only a function as a mere support for the sealing material, so that the fire resistance of the joint gap is improved. Therefore, it is necessary to fill the inside with a refractory material such as glass wool. This not only increases the number of working steps, but also requires the glass wool to be filled from the inner wall side.

On the other hand, in the case where the gasket is previously attached to the outer wall panel, it is necessary to take care that the gasket does not be distorted when installing the panel, and it is also necessary to separately fill the fireproof material from the inside. become.

[0006] In addition, in any case, there is a disadvantage that when the seal material ignites in the event of a fire, it is burned out as it is.

The present invention solves such a conventional drawback and fills a joint seal into a joint gap with a backup material. It is not necessary to separately fill a joint part with a refractory material. It is an object of the present invention to provide a joint sealing structure in which the seal material does not burn out early even if the seal material ignites.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a method in which a gap between outer wall joints is filled with a refractory elastic backup material, and a sealing material adheres to the backup material. It is characterized by being filled from the outside.

In the above, according to the invention of claim 2 of the present application, the backing material is a silicon sponge.

[0010]

FIG. 1 is an overall perspective view of a wall panel according to the present invention as viewed from the back side. In the figure, (1)
Is a rectangular siding made of inorganic material such as lightweight concrete or other concrete,
On the back surface of the siding material (1), a rectangular frame-shaped metal frame (2) is fixed along the outer periphery of the siding material (1).

As shown in the figure, the metal frame (2) comprises a pair of left and right vertical frame members (3), and the vertical frame members (3).
Upper horizontal frame member (4) connecting the upper ends of the lower frame member, lower horizontal frame member (5) connecting the lower ends of the upper frame member, and a vertical frame member.
And (3) a middle crosspiece (6) for connecting the intermediate portions in the vertical direction.

In the drawing, (7) and (7) are mounting brackets for mounting the wall panel (8) having the above-mentioned structure to the beam (9) in FIG. As shown in FIG. 2, the mounting bracket (7) has a support plate (11) installed horizontally on an upper surface of an upper flange (10) of a beam (9) made of H-section steel and fixed with bolts (12). Then, the support bolt (14) inserted from below into the upper horizontal frame (4) material is inserted into the bolt hole (13) at the tip of the support plate (11) projecting outward from the beam (9), By screwing the nut (15), the wall panel (8) is suspended and supported via the support bolt (14). Also, a vertical plate protruding above the support plate (11)
In (16), the lower end of the upper wall panel (8) is fixed by bolts (17) protruding from the lower horizontal frame member (5).

In FIG. 2, (18) shows upper and lower wall panels.
(8) A back-up material for sealing inserted in the horizontal joint between (8) and made of a fire-resistant material such as silicon sponge. It is filled from the outside up to the position where it hits the horizontal frame member (5). The outside of the fire-resistant backup material (18) is filled with a commonly used seal material (19), for example, denatured silicon, from the outside so as to be in close contact with the backup material (18).

According to this structure, the joint has a kind of double structure composed of a backup material (18) made of a refractory material and a normal sealing material (19). Even if a flame enters from the outside and moves to the sealing material (19) at this time, since there is no air layer on the back side of the sealing material (19), this sealing material (19) may be burned out only by carbonization. Without, coupled with the inner fire-resistant backup material (18),
Excellent fire resistance. Therefore, it is not necessary to use a special refractory material.

FIG. 3 shows a wall panel (8) adjacent in the left-right direction.
In the vertical joint portion between (8), a refractory backup material (18) also made of silicon sponge and the like and a seal material (19) made of modified silicon and the like are filled in close contact with each other. The backup material (18) is a vertical frame material.
(3) It is inserted up to the position corresponding to (3).

[0016]

As described above, according to the present invention, as a backup material for the seal material filled in the joint gap of the outer wall, a backup material made of a refractory material is used. Since it also has a function as a refractory material in addition to the above function, there is no need to separately fill a refractory material, and thus there is an effect that the number of work steps can be reduced accordingly.

Further, since the sealing material is in close contact with the fire-resistant backup material, even if the sealing material is ignited by a flame that has entered from the outside, the sealing material is only charred and does not burn out. Excellent is obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a wall panel viewed from a back surface.

FIG. 2 is a longitudinal sectional view of a main part of a horizontal joint between wall panels.

FIG. 3 is a cross-sectional view of a main part of a vertical joint.

[Explanation of symbols]

 (8) Wall panel (18) Backup material (19) Seal material

Claims (2)

[Claims] 1. A joint sealing structure for an outer wall, wherein a gap between outer wall joints is filled with a fire-resistant elastic backup material and a sealing material is filled from the outside so as to be in close contact with the backup material. . 2. The joint sealing structure for an outer wall according to claim 1, wherein the backup material is a silicone sponge.