JP4063438B2 - Aeration drainage structure for outer wall - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
According to the present invention, an aeration drainage material for introducing outside air into an aeration space formed on the back side of the outer wall while draining water flowing down the surface of the outer wall is extended along the lower end portion of the outer wall. It is related with the aeration draining structure for outer walls formed by this.
[0002]
[Prior art and problems to be solved by the invention]
For example, as a means to prevent condensation, mold, or warping of the wall by introducing outside air to the back of the wall that constitutes the outer wall of the building, a ventilation drainer is provided at the lower end of the outer wall. Are known. This ventilating drainage material is a non-combustible member made of metal such as stainless steel, and is formed on the back surface of the outer wall while holding a space between the base member or the roof member located below the outer wall and the outer wall. An outside air introduction path to the ventilation space is formed, and a water section protruding downward is provided to block water that tends to go around the building along the lower end of the outer wall.
[0003]
However, according to the conventional vent drainer structure in which the vent drainer is extended along the lower end of the outer wall, since the outside air is actively taken into the vent space, hot air and flame are There existed a subject that it would be easy to penetrate | invade into ventilation space and will promote combustion of the inner building surrounded by an outer wall.
[0004]
The present invention has been made in view of the above-described conventional problems, and prevents external air from entering the ventilation space on the back of the outer wall at the time of a fire, thereby avoiding the promotion of combustion of the building. The purpose is to provide.
[0005]
[Means for Solving the Problems]
According to the present invention, an aeration drainage material for introducing outside air into an aeration space formed on the back side of the outer wall while extending the water flowing down the surface of the outer wall is extended along the lower end portion of the outer wall. In the outer wall vent water drainage structure formed by the above-mentioned structure, the non-flammable volume expansion material which expands by heat is formed along the upper end edge or lower end edge of the vent introduction path below the outer wall held by the vent drainer. It is fixed so as to expand in the direction of closing the introduction path, and the incombustible volume expansion material is expanded by the heat at the time of fire to block the ventilation introduction path, thereby blocking the entry of hot air and flame into the ventilation space. A lid member that is rotatably attached to the upper end edge or the lower end edge of the ventilation introduction path and opens and closes the ventilation introduction path, and is configured to open the noncombustible volume expansion material when opened. Above It adheres along the upper edge or the lower edge in a state of being covered with a member, expands the noncombustible volume expansion material by heat at the time of fire, and closes the ventilation introduction path by pressing the lid member. Thus, the object is achieved by providing an outer wall ventilating drainage structure characterized in that hot air and flame are prevented from entering the vent space (the invention according to claim 1).
[0007]
Furthermore, in the outer wall vent water draining structure of the present invention, the outer wall is preferably an outer wall of a first floor portion of a house building, and the vent introduction path is preferably formed along the upper surface of the foundation member. (Invention of Claim 2 ).
[0008]
Furthermore, the vent wall draining structure for an outer wall according to the present invention is such that the vent introduction path introduces outside air into a lateral ventilation space formed in the lower part of the floor along the upper surface of the mounting base member. The incombustible volume expansion material is expanded by the heat of time to close the ventilation introduction path, thereby simultaneously blocking the intrusion of hot air and flame into both the ventilation space and the lateral ventilation space. (Invention of claim 3 ).
[0009]
In the outer wall vent water drainage structure of the present invention, the outer wall is an outer wall of an upper floor portion of a house building, and the vent introduction path is formed along the upper surface of the roof material on the lower floor. May be. (Invention of Claim 5 )
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Reference examples and preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. As shown in FIGS. 1 and 2, the outer wall vent water draining structure 10 according to the first reference example drains water that flows down the surface of the outer wall 11, and the vent space 12 is formed on the back side of the outer wall 11. The ventilating drainer 13 for introducing the outside air is formed by extending along the lower end portion of the outer wall 11.
[0011]
Further, according to the first reference example , the non-combustible volume expansion material that expands by heat along the upper edge of the ventilation introduction path 15 below the outer wall 11 held between the foundation concrete 14 by the ventilation drainer 13. 16 is fixed so as to expand in a direction to close the ventilation introduction path 15.
[0012]
The outer wall 11 is made of a siding material, and covers the outer peripheral surface 23 of the first floor portion of the house building formed by installing various board members, moisture permeable waterproof sheets, etc. By being attached at intervals, a ventilation space 12 having a width of about 20 mm is formed on the back side of the outer wall 11.
[0013]
The ventilating material 13 is formed by subjecting a plate member made of stainless steel, which is incombustible and has a high melting temperature, to bending or welding, and extends vertically along the distal end surface of the longitudinal body edge 17. 18, a cross section provided at the lower end portion of the vertical plate portion 18, a draining plate portion 19 that extends obliquely downward from the vertical plate portion 18 across the lower portion of the outer wall 11, and further extends vertically downward. It consists of a U-shaped expansion material fixing part 20.
[0014]
According to this ventilating water draining material 13, for example, the vertical plate portion 18 is fixed to the vertical body edge 17 by being fixed, so that the ventilation introduction path 15 is held and formed between the foundation concrete 14 below the outer wall 11. Further, water such as rain water flowing down along the surface of the outer wall 11 passes through the ventilating material 13 disposed at the lower end of the outer wall 11, and is drained without going around the back side of the outer wall 11.
[0015]
According to the first reference example , the base 21 of the house building is installed on the packing member 22 disposed on the foundation concrete 14 at a distance from each other, and the gap between the adjacent packing members 22 is ventilated. A lateral ventilation space 24 is formed in the lower part of the floor along the upper surface of the foundation concrete 14 as a road. Therefore, the ventilation that passes through the ventilation introduction path 15 is taken into not only the ventilation space 12 on the back surface of the outer wall 11 but also the lateral ventilation space 24 in the lower floor.
[0016]
The noncombustible volume expansion material 16 is an expandable graphite flameproof and smokeproof sealing material generally used as a noncombustible volume expansion material, and has a hot air temperature of about 10 to 10 times at 150 to 170 ° C. It has the property of expanding. As the incombustible volume expansion member 16, for example, Austrian Chemie Linz Co. and "Intsu Mex" -, (entitled "Fire composition" of the invention) Japanese Open Sho 63-132968, Japanese Open Rights No. 3-235 Products and techniques shown in (Title of Invention “Fireproof / Fireproof Coating Mat”) and the like are used. Further, the noncombustible volume expansion material 16 has a property that it does not burn or dissolve even when the heating temperature reaches 850 ° C.
[0017]
The incombustible volume expansion material 16 is filled and arranged in the expansion material fixing portion 20 of the ventilating water draining material 13 and thereby expands in a direction to close the ventilation introduction path 15 by heat. That is, the expansion material fixing portion 20 is disposed along the upper edge of the ventilation introduction path 15, and the opening side of the U-shaped cross section is disposed downward, whereby the nonflammable volume expansion material 16 is disposed. Expands toward the foundation concrete 14 and blocks the ventilation introduction path 15.
[0018]
According to the ventilating drainage structure 10 of the first reference example, the drainage water draining material 13 drains water that flows down the surface of the outer wall 11 and is formed below the outer wall 11 in a normal state where no fire has occurred. Outside air is introduced into the ventilation space 12 on the back surface of the outer wall 11 and the lateral ventilation space 24 in the lower floor through the ventilation introduction path 15. On the other hand, in the event of a fire, the non-combustible volume expansion material 16 receives hot air to expand its volume, presses and adheres to the foundation concrete 14 which is a non-combustible material, blocks the ventilation introduction path 15, and Hot air and flame are prevented from entering the rear ventilation space 12 and the lateral ventilation space 24 at the bottom of the floor, thereby preventing the building from being promoted to burn.
[0019]
Figure 3 shows the external wall vent draining structure 30 according to the second reference example, according to the second reference example, the same as the first reference example venting draining material 13, the second floor of the house building It is configured by extending along the lower end portion of the outer wall 31.
[0020]
That is, the outer wall 31 is made of a siding material and covers the outer peripheral surface 34 of the second floor portion of the house building formed by installing various board members 32, moisture-permeable waterproof sheets 33, etc. The ventilation space 36 having a width of about 20 mm is formed on the back side of the outer wall 31 by being attached at predetermined intervals. Further, the ventilating material 13 holds and forms a ventilation introduction path 38 between the base end portion 37 of the first-floor roof below the outer wall 31 by, for example, fixing the vertical plate portion 18 to the vertical trunk edge 17 and fixing it. At the same time, the opening of the inflatable material fixing part 20 is arranged downward.
[0021]
At the base end portion 37 of the first-floor roof, a headboard 39 is disposed on the upper surface of the slate tile 41, and a stainless steel rain retainer plate 40 is disposed to cover the headboard 41. Thereby, the noncombustible volume expansion material 16 which expanded at the time of a fire closely_contact | adheres to the rain retainer plate 40 which is a noncombustible material, and interrupts | blocks the ventilation | gas_flowing introduction path 38. FIG.
[0022]
According to the vented water draining structure 30 of the second reference example , as in the first reference example , the water draining down the surface of the outer wall 31 is drained by the vent water draining material 13 in normal times when no fire has occurred. Then, outside air is introduced into the ventilation space 36 on the back surface of the outer wall 31 through the ventilation introduction path 38. On the other hand, in the event of a fire, the incombustible volume expansion material 16 receives hot air, expands its volume, and presses and adheres to the rain retainer plate 40 to block the ventilation introduction path 38, so that hot air or flames enter the ventilation space 36. Prevent intrusion.
[0023]
FIG. 4 shows an aeration draining structure 10 for an outer wall according to a preferred embodiment of the first invention. According to FIG. 4, the expansion material fixing portion 20 is not provided at the lower end portion of the vertical plate portion 18 of the ventilating water draining material 13, and the nonflammable volume expansion material 16 is the lower end edge portion of the aeration introducing path 15. It is fixed along the lower edge of the air introduction path 15 while being covered with an opening / closing lid plate 42 rotatably mounted on the foundation concrete 14 by hinge connection.
[0024]
According to the non-combustible volume expansion material 16 fixed in this manner, in a normal state where no fire occurs, the state covered with the open / close lid plate 42 at the time of opening is maintained, and the outside air is passed through the ventilation introduction path 38. Is introduced. On the other hand, in the event of a fire, the non-combustible volume expansion material 16 receives hot air, expands its volume, rotates the opening / closing lid plate 42 so as to push it up, and moves the upper end of the opening / closing lid plate 42 to the lower end of the vertical plate portion 18. The aeration introducing path 15 is closed by abutting against the air. That is, along with the blockage caused by the expansion of the non-combustible volume expansion material 16, the ventilation introduction path 15 is blocked by the opening / closing lid plate 42, and hot air or flame is generated in the ventilation space 12 on the back surface of the outer wall 11 or the lateral ventilation space 24 in the lower floor. Intrusion can be prevented more reliably.
[0025]
The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the ventilating drainage material is not necessarily limited to the one composed of the vertical plate portion 18 and the draining plate portion 19, and various other ventilating drainage materials known as the ventilating drainage material can be used. Further, it is not always necessary for the ventilating material to be struck against the vertical body edge 17 and fixed to the lower end of the outer wall. Further, the ventilating material is not necessarily formed from a plate member made of stainless steel, as long as it is a non-flammable and high melting temperature material, for example, aluminum or other metals or alloys, ceramics, etc. An aeration drainage formed using various materials capable of forming an aeration drainage can be employed.
[0026]
【The invention's effect】
As described above in detail, according to the ventilating drainage structure for an outer wall of the present invention, it is possible to prevent hot air and flames from entering the venting space on the back of the outer wall at the time of a fire, and avoid promoting the combustion of the building. Can do.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an aeration draining structure for an outer wall according to a first reference example of the present invention.
FIG. 2 is an enlarged cross-sectional view showing a situation at the time of a fire of a ventilating drainage structure for an outer wall according to a first reference example of the present invention.
FIG. 3 is a cross-sectional view showing an aeration draining structure for an outer wall according to a second reference example of the present invention.
FIG. 4 is an enlarged cross-sectional view showing an outer wall drainage structure according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10,30 Aeration draining structure for outer walls 11,31 Outer wall 12,36 Aeration space 13 Aeration draining material 14 Basic concrete 15,38 Ventilation introduction path 16 Noncombustible volume expansion material 17,35 Vertical trunk edge 18 Vertical plate part 19 Draining plate part 20 Expansion material adhering portion 24 Lateral ventilation space 40 Rain retainer plate (upper surface of lower floor roofing material)
42 Opening and closing lid plate

Claims (4)

It is formed by draining and draining water flowing down the surface of the outer wall, and by extending and disposing an aeration drainage material that introduces outside air into the ventilation space formed on the back side of the outer wall along the lower end portion of the outer wall. In the external wall drainage drainage structure,
The non-combustible volume expansion material that expands by heat is fixed so as to expand in the direction of closing the ventilation introduction path along the upper edge or the lower edge of the ventilation introduction path below the outer wall held by the ventilation drainer. Then, by inflating the non-combustible volume expansion material by heat at the time of fire and closing the ventilation introduction path, it is designed to block the entry of hot air and flame into the ventilation space ,
A lid member that is rotatably attached to an upper end edge or a lower end edge of the ventilation introduction path to open and close the ventilation introduction path is provided, and the non-combustible volume expansion material is covered with the lid member when opened. In this state, it adheres along the upper edge or the lower edge, expands the non-combustible volume expansion material by the heat at the time of fire, presses the lid member, closes the ventilation introduction path, A ventilation drainage structure for an outer wall , wherein the penetration of flame into the ventilation space is blocked . The aeration drainage structure for an outer wall according to claim 1 , wherein the outer wall is an outer wall of a first floor portion of a house building, and the ventilation introduction path is formed along the upper surface of the foundation member. The ventilation introduction path introduces outside air into a lateral ventilation space formed in the lower floor along the upper surface of the mounting base member, and expands the noncombustible volume expansion material by heat at the time of fire. 3. The outer wall vent water drainage structure according to claim 2, wherein the air introduction path is closed to simultaneously block hot air and flame from entering both the vent space and the lateral vent space. The aeration draining structure for an outer wall according to claim 1 , wherein the outer wall is an outer wall of an upper floor portion of a house building, and the ventilation introduction path is formed along an upper surface of a roof material on a lower floor.

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