JP3629652B2 - Building wall structure using firestop material - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wall structure of a building with fire stop material.
[0002]
[Prior art]
Conventional firestops are mainly provided in the frame wall method, which is a so-called two-by-four method, between the floor or ceiling and the wall, and between the wall and the wall, so that flames do not penetrate each other in the event of a fire. ing.
[0003]
This type of conventional firestop is usually made of wood, which not only blocks the flame during a fire, but also blocks normal airflow.
[0004]
[Problems to be solved by the invention]
In recent years, not only in the conventional shaft assembly method but also in the frame wall construction method, a ventilation layer is formed in the wall body, and this ventilation layer connects the underfloor space and the ceiling back space, and naturally circulates air between them. Alternatively, it is considered to prevent corrosion and improve the efficiency of room temperature control by forced circulation.
[0005]
When considering such air circulation, the conventional fire stop is an obstacle because it interrupts the normal air flow as described above.
[0006]
Further, since the conventional fire stop material is made of wood as described above and is flammable, the original function of blocking the flame disappears after combustion.
[0007]
In view of the above-mentioned problems of the prior art, the present invention has a fire stop that is normally breathable, can block a flame in the event of a fire, and has fire resistance. It aims at providing the wall structure of the building which used the material.
[0008]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) An attempt is made to unfold a firestop material, which is foamed by being heated on the surface of a core material having a large number of ventilation holes and coated with a heat-foamable fire-resistant paint capable of closing the ventilation holes, in a flat plate shape. It is rolled up leaving the property to fit, and fitted between the opposing surfaces of the inner and outer walls of the building .
[0009]
(2) The surface of the core material having a large number of ventilation holes is foamed by being heated, and the middle part of the firestop material coated with a heat-foamable fire-resistant paint capable of closing the ventilation holes is rounded to form a building. A terminal portion of the fire stop material is fixed to one of the opposing surfaces of the inner wall and the outer wall of the object, and to the other .
[0010]
(3) In the above item (1) or ( 2 ) , the core material is a metal net .
[0011]
(4) In the above item (1) or ( 2 ) , the core material is a honeycomb structure having a suitable depth and having a large number of air holes in the depth direction, or a perforated plate, and the inner surface of the air holes Apply a heat-foamable fire-resistant paint to the surface of the core material .
[0012]
(5) In the above item (1) or ( 2 ) , the core material has a large number of partition plates parallel to each other, and a gap serving as a vent hole is formed between adjacent partition plates. Then, a heat-foamable fireproof paint is applied to the surface of each partition plate .
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG.1 and FIG.2 shows an example of the fire stop material used for the wall structure of the building of this invention.
This fire stop material (1) is foamed by heating on the entire surface of the core material (3) made of a metal rope such as a wire mesh having a large number of air holes (2), and the air holes (2 ) Is applied with a heat-foamable fire-resistant paint (hereinafter simply referred to as fire-resistant paint) (4).
[0014]
FIG. 1 shows the state before heating and foaming of the fireproof paint (4), and FIG. 2 shows the state after heating and foaming.
[0015]
As the fire-resistant paint (4), for example, a heat-foaming fire-resistant paint known as a noifier system S (trade name) manufactured by Kako Kikai Co., Ltd. can be used.
According to this, the fire-resistant paint (4) is a coating film of only about 1 mm and foams in the event of a fire to form an excellent heat insulation layer of several tens of mm.
Therefore, when a coating film of about 1 mm is formed on the core material (3), if the maximum width of the vent hole (2) is set to several tens mm × 2 (assuming that the coating film foams from both sides) or less, The vent (2) can be completely blocked in the event of a fire.
[0016]
The thickness of the coating film and the maximum width of the vent hole (2) may be appropriately selected so that the vent hole (2) can be completely blocked in the event of a fire as described above.
[0017]
As an application method, for example, spraying, brushing, dipping or any other method may be used.
[0018]
The core material (3) is not limited to a metal net, and may be, for example, a punching metal having a large number of circular vent holes with a diameter of several centimeters, a wooden lattice, or the like.
[0019]
FIG. 3 shows the structure of the building according to the present invention in which the fire stop material (1) shown in FIG. 1 is arranged as a fire stop (21) between the opposing surfaces of the inner wall (11) and the outer wall (12) of the building. 1 shows a first embodiment of a wall structure.
[0020]
In this embodiment, the fire stop material ( 1 ) similar to that shown in FIG. 1 is rounded to leave the property of spreading in a flat plate shape to form a fire stop (21) . It is press-fitted between the opposing surfaces of the inner wall (11) and the outer wall (12) .
[0021]
According to this embodiment, it is only necessary to round the firestop material ( 1 ) and fit between the opposing surfaces of the inner wall (11) and the outer wall (12) , so that the construction is extremely simple and the cost can be reduced. .
[0022]
Moreover, during normal times, air can freely flow through the air hole (2) of the firestop material (1) through the gap between the inner wall (11) and the outer wall (12) of the building. The refractory paint (4) is heated and foamed to form a heat insulating layer that closes the vent hole (2) , so that the flame flows in the gap between the inner wall (11) and the outer wall (12). Blocked .
[0023]
In addition, the fire stop material (1), the inner wall (11) and the outer wall (12) are in contact with each other at a plurality of locations in the direction in which the flame flows in the event of a fire, and the contact area is large. It is possible to reliably prevent the flame from leaking from the gap between the material (1) and the inner wall (11) and the outer wall (12).
[0024]
FIG. 4 shows a second embodiment of a wall structure of a building according to the present invention.
Incidentally, the same members as those shown in FIG. 3, fastened to illustrate the same reference numerals, the detailed description thereof will be omitted.
[0025]
In the second embodiment, both end portions (31) of the fire stop material ( 1 ) similar to that shown in FIG. 1 are left, the middle portion is rounded into a circular shape, and a V-shaped fold is formed at the top portion. The part provided with the part (32) is the fire stop (33) , and the bent part (32) is one of the opposing surfaces of the inner wall (11) and the outer wall (12) of the building (in the case of FIG. 4 ) . The inner wall (11)) is pressed against and the circular portion is elastically bent, and the two end portions (31) are provided on the other of the opposing surfaces (in FIG. 4, the outer wall (12)) . It is inserted into the cut groove (34) and fixed.
[0026]
According to this embodiment, it is possible to simplify the structure of the fire stop (33), can be easily construction, yet can be reliably held fire stop (33), Fire stop (33) is an earthquake or the like There is an advantage that it does not move to the illusion.
[0027]
FIG. 5 shows a second example of a fire stop material used for the wall structure of a building of the present invention.
In this second example, a metal or corrugated paper honeycomb structure having an appropriate depth and provided with a large number of vent holes (41) in the depth direction is used as the core material (42). The firestop material (43) is formed by applying the same refractory paint (4) to the entire surface of the core material (42) including the inner surface of the pores (41).
[0028]
According to this firestop material (43), the vent hole (41) can be lengthened, and the fireproof paint (4) applied to the inner surface foams in the event of a fire, thereby forming an excellent heat insulation layer with a thick layer. be able to.
[0029]
The core material (42) is preferably formed of a non-combustible, heat-resistant, or fire-resistant material. However, if the fire-resistant paint (4) can be held until foamed by heating, it is combustible such as paper or wood. It may be formed of a material having a property .
[0030]
FIG. 6 shows a third example of a fire stop material used in the wall structure of the present invention.
In this third example , the upper and lower end portions of a number of metal or wood partition plates (52) that are parallel to each other and that are parallel to each other are placed in a rectangular frame (51) made of metal or wood. Adhering to each other, a core material (54) is formed between the adjacent partition plates (52) and between the frame body (51) and the partition plate (52). The fire-resistant paint (4) is applied to the surface of the frame (51) and each partition plate (52) to form a fire stop material (55).
This firestop material (55) foams the fireproof paint (4) in the event of a fire, closes the gap (53), and has substantially the same operations and effects as the firestop material (43) shown in FIG. be able to.
[0031]
These fire stop materials (43) and (55) shown in FIGS. 5 and 6 are used in place of the fire stop material ( 1 ) in the wall structure of the building shown in FIGS. 3 and 4 , or, for example, In place of the core material (42) shown in FIG. 5, a number of variations can be made, such as using a perforated plate having a large number of air holes.
[0032]
【The invention's effect】
According to the present invention, the following effects can be achieved.
(a) According to the first aspect of the present invention, it is only necessary to round the fire stop material and fit it between the opposing surfaces of the inner wall and the outer wall, so that the construction is extremely simple and the cost can be reduced.
In normal times , air can freely circulate through the vent holes of the firestop material. In the event of a fire, etc., a heat-foamable fire-resistant paint foams and closes the vent holes, providing an excellent heat insulating layer. Can be formed to reliably block the flame flow.
In addition, since the heat-foamable fire-resistant paint foams to form a fire-resistant wall, there is little risk of the core material being burned out even if the core material itself is not fire-resistant or non-flammable, and the foamed fire-resistant paint is solidified. Then, even if the core material is burnt out, the fireproof wall can be self-supporting, and the flame can be blocked.
[0033]
(b) According to the invention described in claim 2, the structure of the fire stop can be simplified and can be easily constructed, and the fire stop can be securely held. Never move on.
Other effects are the same as those of the first aspect of the invention.
[0034]
(c) According to the invention described in claim 3, since the air permeability of the firestop material can be sufficiently ensured, the firestop material can be manufactured at a low cost, and can be easily folded or rolled. Excellent workability on site when assembled as a stop to the wall structure of a building.
[0035]
(d) According to the inventions of claims 4 and 5, the vent hole can be lengthened, and the fireproof paint applied to the inner surface foams in the event of a fire, thereby forming an excellent heat insulation layer with a thick layer. it can.
[Brief description of the drawings]
FIG. 1 is a partial enlarged perspective view showing a state before heating and foaming of a refractory paint in an example of a fire stop material used for a wall structure of a building of the present invention.
FIG. 2 is an enlarged perspective view of the same part as in FIG. 1, similarly showing a state after heating and foaming.
FIG. 3 is a cross-sectional plan view showing a first embodiment of a wall structure of a building according to the present invention using the firestop material shown in FIG. 1;
FIG. 4 is a cross-sectional plan view showing a second embodiment of the wall structure of the building of the present invention using the firestop material shown in FIG. 1;
FIG. 5 is a perspective view of a part of a second example of a firestop material used in the wall structure of a building according to the present invention.
FIG. 6 is a partial front view of a third example of a firestop material used for the wall structure of a building according to the present invention.
[Explanation of symbols]
(1) Firestop material
(2) Ventilation hole
(3) Core material
(4) Heat-foaming fireproof paint (fireproof paint)
(11) Inner wall
(12) outside the wall
(21) Fire stop
(31) Terminal section
(32) Bending part
(33) Fire stop
(34) Cut groove
(41) Vent
(42) Core material
(43) Firestop material
(51) Frame
(52) Partition plate
(53) Gap
(54) Core material
(55) Firestop material

Claims (5)

It has the property of spreading a firestop material coated with a heat-foamable fire-resistant paint that foams when heated on the surface of a core material having a large number of air holes and can close the air holes. A wall structure of a building using a fire-stop material, characterized by being rounded and fitted between opposing surfaces of the inner wall and the outer wall of the building. The inner wall of the building is formed by rounding the middle part of the firestop material, which is foamed by being heated on the surface of the core material having a large number of ventilation holes and coated with a heat-foamable fire-resistant paint capable of closing the ventilation holes. A wall structure of a building using a fire stop material, characterized in that it is in pressure contact with either one of the opposing surfaces of the wall and the outer wall, and the other end of the fire stop material is fastened to the other. The wall structure of the building using the firestop material according to claim 1 or 2, wherein the core material is a metal net . The core material is a honeycomb structure having a suitable depth and a large number of air holes in the depth direction, or a perforated plate. The wall structure of the building using the firestop material of Claim 1 or 2 . The core material has a large number of partition plates parallel to each other, and a gap serving as a vent hole is formed between adjacent partition plates, and a heat-foamable fireproof paint on the surface of each partition plate The wall structure of the building using the firestop material of Claim 1 or 2 which apply | coated .

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