JP7211583B1 - Exterior wall materials using fireproof furring strips - Google Patents

Abstract

The object of the present invention is to provide an exterior wall material using a fireproof furring strip that maintains workability and improves fireproof performance while using as little metal as possible. SOLUTION: Exterior wall materials using fireproof furrings consist of a base material in which structural plywood is pasted on the front surface of a pillar material, and a plurality of fireproof furrings are intermittently arranged in front of the base material to form a ventilation layer. and a noncombustible material to which a plurality of noncombustible plates are attached after securing the above, and the fireproof furring is attached to the front surface of the wooden furring with a magnesium plate and is screwed to the pillar material, and the magnesium It is characterized in that the plate is arranged so as to block joints between the adjacent noncombustible plates. [Selection drawing] Fig. 1

Description

TECHNICAL FIELD The present invention relates to an exterior wall material using a fireproof furring that suppresses heat from reaching the foundation from the exterior wall of a building in the event of a fire.

When making a wooden building into a fireproof structure, a fireproof panel or the like is attached to the surface of the base material of the outer wall via a ventilation furring. As a base material, for example, there is a material in which pillars or studs are sandwiched between incombustible boards or the like and then a heat insulating material or the like is filled between the pillars. As described in Patent Literature 1, an invention is also disclosed in which a joiner is interposed between adjacent building boards, and a refractory material is put in the joints for sealing.

Even if noncombustible materials are used on the surface, if a metal member such as a joiner is used, the internal wood or resin may burn or scorch due to heat conduction. As described in Patent Document 2, there is also disclosed an invention that uses a ventilation furring so that heat is conducted from the fireproof panel on the surface to the base material to prevent the interior from burning.

JP 2020-105734 A Japanese Patent No. 6607546

However, even if a refractory material is used, if it melts after the refractory time is exceeded, the heat will be transferred to the back through the metal member, so there are cases where the metal itself is not desired. If multiple layers of incombustible materials are layered, the fireproof performance will be improved, but the weight will increase and the thickness will increase, resulting in poor workability.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an external wall material using fireproof furring strips that maintain workability and improve fireproof performance by using as little metal as possible.

In order to solve the above problems, the outer wall material using the fireproof furrings of the present invention includes a base material in which structural plywood is pasted on the front surface of the pillar material, and a plurality of fireproof furrings on the front surface of the base material. and a noncombustible material in which a plurality of incombustible plates are attached after securing a ventilation layer intermittently, and the fireproof furring is attached to the front surface of the wooden furring with a magnesium plate It is characterized in that it is screwed to the pillar material and arranged so that the joints between the adjacent noncombustible plates are closed with the magnesium plate.

In the exterior wall material using the fireproof furrings, the noncombustible material closes joints by interposing a hat-shaped joiner between the adjacent noncombustible plates, and the fireproof furrings are made of the noncombustible plate and the magnesium plate. It is characterized by being arranged so as to sandwich the joiner.

The outer wall material using the fireproof furring strip is characterized in that a moisture-permeable waterproof sheet is interposed between the base material and the incombustible material.
In the outer wall material using the fireproof furring strip, the magnesium plate is formed by mixing rocks.

ADVANTAGE OF THE INVENTION According to this invention, even if it minimizes use of a metal, fireproof performance can be improved, maintaining workability. Even if the noncombustible material on the surface is made thin, the heat transfer to the inside can be suppressed, so the weight of the outer wall can be reduced.

1 is a diagram showing an exterior wall material using fireproof furring strips according to the present invention; FIG. 1 is a diagram showing an exterior wall material using fireproof furring strips according to the present invention; FIG. FIG. 3 is a diagram showing a case where a noncombustible material is arranged on the surface using a hat-shaped joiner in the exterior wall material using the fireproof furring strip of the present invention. FIG. 3 is a diagram showing a case where a noncombustible material is arranged on the surface using a hat-shaped joiner in the exterior wall material using the fireproof furring strip of the present invention. FIG. 10 is a photograph comparing a case where the external wall material using the fireproof furring strip of the present invention is not used and a case where the external wall material is used. FIG. 4 is a photograph showing a comparison between a case where the external wall material using the fireproof furring strip of the present invention is not used and a case where the external wall material is used. FIG. 4 is a photograph showing a comparison between a case where the external wall material using the fireproof furring strip of the present invention is not used and a case where the external wall material is used.

BEST MODE FOR CARRYING OUT THE INVENTION Below, embodiments of the present invention will be described in detail with reference to the drawings. Components having the same function are denoted by the same reference numerals, and repetitive description thereof may be omitted. The surface facing the outside of the building is called the front (front), and the surface facing the inside of the building is called the back (back).

First, the outer wall material using the fireproof furring strip of the present invention will be described. FIG. 1 is (a) a plan sectional view and (b) a front view of an exterior wall material using fireproof furrings, and FIG. 2 is a side sectional view of an exterior wall material using fireproof furrings. In FIG. 1(b), the area above the oblique lines shows the state in which the incombustible plate on the front side is made transparent.

As shown in FIGS. 1 and 2, the exterior wall material 100 includes a base material 200 in which structural plywood 240 is attached to the front surface of pillar materials (columns 220 and studs 230), and a plurality of fire-resistant materials on the front surface of the base material 200. It has a noncombustible material 300 in which furring strips 400 are arranged intermittently to secure a ventilation layer 430 and a plurality of noncombustible plates 320 are attached.

The base material 200 is a part that serves as a base for finishing the outer wall, and is part of the skeleton of the building. A noncombustible plate 320 is used to prevent burning or scorching in the event of a fire or the like. The base material 200 consists of pillars 220 arranged at predetermined intervals to support the building, studs 230 arranged between the pillars 220 to support the outer wall, etc., and a noncombustible board or the like pasted on the back side of these pillar materials. It has a base plate 210, a structural plywood 240 attached to the front side of the pillar material, and the like.

The structural plywood 240 is used to improve earthquake resistance, wind resistance, airtightness, soundproofing, and the like. The space between the pillars 220 and the studs 230 is closed by attaching the base board 210 and the structural plywood 240, but the space may be filled with a heat insulating material or the like, or may be left hollow.

The noncombustible material 300 is made of a noncombustible material to prevent flames and heat from reaching the base material 200 so that the frame of the building does not burn due to fire or the like. The noncombustible material 300 has an inner plate 310 using a noncombustible board on the inside, a noncombustible plate 320 using a cement board on the outside, and a fireproof furring 400 intermittently arranged between the inner plate 310 and the noncombustible plate 320. .

The noncombustible plate 320 uses a noncombustible material with higher fire resistance and fire resistance than a flame retardant material or a quasi-noncombustible material. For example, there are a cement board, a gypsum board, a magnesium board, etc., and a board made of gypsum, aggregate, or the like as a core material and reinforced by embedding glass fiber or the like may be used. Since it is heavy, it is preferable not to stack multiple sheets or increase the thickness.

A ventilation layer 430 is secured by the fireproof furring strip 400 between the noncombustible plate 320 and the inner plate 310 . Furthermore, between the base material 200 and the incombustible material 300, a moisture-permeable waterproof sheet 250 is interposed therebetween. Rainwater entering from the outer wall is discharged from the ventilation layer 430, and internal moisture is discharged from the ventilation layer 430 to the outside.

The refractory furring strip 400 has a magnesium plate 420 affixed to the front surface of the wooden furring strip 410, and is fastened with screws 330 to the pillars 220 and 230 so that the magnesium plate 420 closes the joint 340 between the adjacent noncombustible plates 320. placed.

The wooden furring 410 is a ventilation furring using wood, and a magnesium plate 420 is applied to the surface to suppress burning. A magnesium plate 420 may be adhered to the wooden furring strip 410, or may be attached to the side or rear surface. If metal is used for the furring strip, the screws 330 can be easily fastened, but wood or the like will be scorched by being heated by the flame. Also, if resin is used for the furring strip, it will melt at a high temperature and it will be difficult to fix the screws 330 .

The magnesium plate 420 is a noncombustible board, such as a shell board, in which magnesium (magnesium hydroxide, magnesium oxide, or the like) is contained with a shell as a core material. Mixing wood chips makes it lighter, but makes it weaker and more brittle, so it is molded by mixing rocks. If light stones are mixed in, it will be light and strong against water and fire resistance will be improved. By covering the wooden furring strip 410 with the magnesium plate 420 , flames and heat do not reach the wooden furring strip 410 .

The refractory furring strip 400 is arranged in accordance with the position of the pillar material of the pillar 220 or the stud 230, and is fastened by penetrating it to the pillar material of wood with a screw 330. - 特許庁The metal screws 330 are firmly fixed to the wood, but even if they are heated, they are so thin that they do not scorch the wooden furring strip 410 and the pillars.

In order to absorb expansion, contraction, vibration, etc. of the noncombustible boards 320 when a plurality of noncombustible boards 320 are attached, joints 340 are provided at predetermined intervals between the noncombustible boards 320 . A fireproof furring strip 400 is applied from the back side to seal the joint 340 so that flame and heat do not enter through the joint 340 .

If flame and heat are prevented from entering by stacking the noncombustible plates 320 and shifting the position of the joint 340, the weight will increase considerably. When the noncombustible plate 320 is screwed, the load applied to the screw increases as the thickness of the noncombustible plate 320 increases, and the strength of the noncombustible plate 320 is also affected when the number of holes in the noncombustible plate 320 increases.

With the refractory furring strip 400, there is no need to overlap the noncombustible plates 320, and only the joints 340 when the noncombustible plates 320 are arranged side by side need be closed, so the heavy noncombustible material is minimized and the weight is significantly reduced. be done.

FIG. 3 shows (a) a plan cross-sectional view and (b) a front view when a noncombustible material is arranged on the surface using a joiner in an exterior wall material using fireproof furrings, and FIG. 4(a) is a plan view. It is the figure which expanded a part of sectional drawing, and FIG.4(b) is side sectional drawing. In FIG. 3(b), the area above the oblique line shows the state in which the incombustible plate on the foremost side is made transparent.

As shown in FIGS. 3 and 4, the noncombustible material 300 has a hat-shaped joiner 500 interposed between the adjacent noncombustible plates 320 to close the joint 340, and the fireproof furring strip 400 consists of the noncombustible plate 320 and the magnesium plate. 420 are arranged to sandwich the joiner 500 .

The joiner 500 is a metal member in which a ridge is formed in the central part of a vertically long plate, and non-combustible plates 320 are arranged on the left and right sides of the ridge, respectively. are inhibited from being transmitted to It should be noted that the surface of the ridge may be filled with a jointing agent 510 such as a nonflammable caulking agent for sealing.

When the joint agent 510 burns or melts at a high temperature, heat is transferred to the metal joiner 500, but the joiner 500 is sandwiched between the incombustible plate 320 and the magnesium plate 420, and the heat reaches the wooden furring strip 410 and the pillar material. does not reach

If the fireproof furring strip 400 is used, the heat resistance of the joint 340 can be ensured without using the joiner 500, and the interval between the joints 340 can be narrowed. No problem.

Figure 5 (a) is an exterior wall material that does not use a fireproof furring, Figure 5 (b) is an exterior wall material that uses a fireproof furring, and Figure 6 (a) is a fireproof furring when using a joiner. The exterior wall material used, and FIG. 6(b) is a photograph of its side cross section. Moreover, Fig.7 (a) is the result of both fire resistance tests, and FIG.7(b) is the photograph which compared the inside after the fire resistance test.

As shown in Figs. 5 and 6, an exterior wall material without fireproof furrings and an exterior wall material with fireproof furrings are prepared, exposed to flame for about one hour, and then left for about 30 minutes. bottom. Even if the incombustible material 300 burns, the base material 200 should not burn.

As shown in FIG. 7( a ), with the non-combustible plate 320 on the surface removed, the outer wall material without the fireproof furring on the right side has the wooden furring 410 and the inner plate 310 burned considerably. , in the outer wall material 100 using the fireproof furring strip 400 on the left side, the wooden furring strip 410 and the inner plate 310 are not burned much.

As shown in FIG. 7B, when the noncombustible material 300 is removed, the structural plywood 240 is scorched 260 in the outer wall material that does not use the fireproof furring on the right side, but the fireproof material on the left side is burnt. In the exterior wall material 100 using the furring strip 400, no scorching of the structural plywood 240 is found.

ADVANTAGE OF THE INVENTION According to this invention, even if it minimizes use of a metal, fireproof performance can be improved, maintaining workability. Even if the noncombustible material on the surface is made thin, the heat transfer to the inside can be suppressed, so the weight of the outer wall can be reduced.

Although the embodiments of the present invention have been described above, the present invention is not limited to these.

100: Exterior wall material 200: Base material 210: Base plate 220: Column 230: Stud 240: Structural plywood 250: Moisture-permeable waterproof sheet 260: Burnt 300: Noncombustible material 310: Inner plate 320: Noncombustible plate 330: Screw 340: Joint 400: Refractory Furring 410: Wood Furring 420: Magnesium Plate 430: Breathable Layer 500: Joiner 510: Joint Agent

Claims (3)

A base material with structural plywood pasted on the front of the pillar material,
A noncombustible material in which a plurality of fireproof furrings are intermittently arranged on the front surface of the base material to secure a ventilation layer and a plurality of noncombustible plates are attached,
The refractory furring is a magnesium plate formed by mixing rocks and containing magnesium with shells as a core material, is attached to the front surface of the wooden furring, and is screwed to the pillar material. Arranged so as to close the joints between the adjacent noncombustible plates,
An exterior wall material using fireproof furrings characterized by: The incombustible material closes the joint by interposing a hat-shaped joiner between the adjacent incombustible plates,
The refractory furring strip is arranged so that the joiner is sandwiched between the noncombustible plate and the magnesium plate,
The outer wall material using the fireproof furring strip according to claim 1, characterized in that: A moisture-permeable waterproof sheet is interposed between the base material and the incombustible material,
The outer wall material using the fireproof furring strip according to claim 1, characterized in that:

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