JP2003176597A - Ventilation structure of attic space - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation structure of an attic space capable of preventing fire or rain water from intruding into the attic space by blocking a ventilation passage disposed between the indoor or the outdoor and the attic space, during the fire or strong wind. <P>SOLUTION: In this ventilation structure of the attic space, the ventilation passage 2, of which both sides are surrounded with standing surfaces 3 and 4, lower part is opened to the outdoor side, and ceiling surface 6 has many slit holes 5, is disposed between the outdoor and the attic space. Each of the standing surfaces 3 and 4 has one of engagement recessed parts 13 and 14, and incombustible volume expansion material A or an on-off valve 15 is removably mounted to the engagement recessed parts 13 and 14. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation structure for an attic, and in particular, when a fire occurs, the ventilation passage formed outside the room or between the room and the attic is closed to prevent fire spread or strong wind. The present invention relates to a ventilation structure for an attic that can be easily and inexpensively constructed by blocking the ventilation passage to prevent wind and rain from entering the inside of the attic.

[0002]

2. Description of the Related Art A known technique for providing a ventilation passage outside or between a room and an attic and preventing a flame or the like from entering the ventilation passage at the time of a fire is disclosed in, for example, JP-A-6-
No. 73828 (first known technique), or JP-A-10-
Many techniques are known as shown in Japanese Patent No. 325191 (second known technique) and the like. Further, the applicant of the present patent has developed and applied for a patent of a fireproof ventilation device which has a simple structure, is easy to assemble and install, and is excellent in design (patent application 2000-
386594).

Further, as a technique for preventing wind and rain from invading the back of a hut in the case of strong wind, Japanese Patent Laid-Open No. 8-260611.
Japanese Patent Publication No. 3 (publicly known technique), Japanese Unexamined Patent Publication No. 8-312017 (fourth known technique), Japanese Utility Model Publication No. 3-29516 (fifth known technique) and the like are known.

[0004]

However, in the techniques of the first known technique and the second known technique described above, the structure of the ventilation structure is generally complicated, and non-combustible foaming occurs in the ventilation passage at the time of a fire. Since the volume expandable material is generally fixed with a double-sided tape, an adhesive, a stapler or the like, there is a problem that the cost becomes high. In addition, since the non-combustible volume expansion material that foams in a fire in a ventilation passage is generally fixed with double-sided tape, adhesive or staples, even when the non-combustible volume expansion material deteriorates after construction of the building, There is a problem that it is difficult to exchange by simple means.

In the invention under application developed by the applicants of the present invention, the overall constitution, cost and design are extremely excellent. However, in the case of the present invention as well, the non-combustible volume expansion material is used. When it deteriorates, there is a problem that it is difficult to replace it by simple means.

Further, in the above-mentioned first known technique and second known technique, or in the invention developed by the above-mentioned applicant of the present invention, the ventilation passage is always open,
There was a problem that rainwater might enter the back of the hut during strong winds such as typhoons.

Further, in the above-mentioned third known technology to fifth known technology, there is a problem in that the whole structure is complicated, and it takes time and effort for manufacturing and assembling, resulting in high cost. In addition, these techniques have a problem that it is difficult to easily replace the open / close valve when it has been used for many years and the open / close valve deteriorates. Further, in these known techniques, since the ventilation passage is not protected against fire, there is a problem that when a fire occurs, flame easily enters the attic through the ventilation passage. .

The attic ventilation structure according to the present invention is a completely new invention developed in view of the above-mentioned many problems of the prior art, and in particular, a fitting recess having a predetermined shape is formed on a standing surface forming a ventilation passage. A non-combustible volume expansion material or an on-off valve, or both of them are detachably attached to a predetermined position of the upright surface by using the fitting recess, and thereby, the non-combustible volume expansion material or Can be easily replaced when the on-off valve deteriorates,
Further, the present invention provides a completely new technique capable of preventing flame and rainwater from entering the attic through the ventilation passage.

[0009]

The ventilation structure for the attic according to the present invention is an invention that has fundamentally improved the above-mentioned problems of the prior art. The gist of the first invention is to provide the interior and the attic. In a ventilation structure in which a ventilation passage is formed with both sides surrounded by a standing surface, a lower portion of the ventilation passage is opened to the inside of the room, a ventilation hole is provided in the ceiling portion, and a predetermined position of the standing surface is provided. A ventilation structure for an attic, characterized in that a fitting recess is provided in the fitting recess, and a noncombustible volume expansion material is detachably mounted in the fitting recess.

In the above-mentioned first invention, the ventilation passage whose both sides are surrounded by the upright surface is formed between the room and the back of the house, and the fitting recess is provided at a predetermined position of the upright surface. So
A non-combustible volume expansion material that expands in the event of a fire can be inserted into this fitting recess and mounted very easily. Further, when the non-combustible volume expandable material is deteriorated, it can be taken out from the fitting recess and a new non-combustible volume expandable material can be reinserted and easily replaced.

The gist of the second aspect of the ventilation structure for the attic according to the present invention is to provide a ventilation structure in which a ventilation passage is formed between the room and the attic, both sides of which are surrounded by upright surfaces. Lower part of the room is opened to the inside of the room, a ventilation hole is provided in the ceiling part, a fitting recess is provided at a predetermined position of the upright surface, and the ventilation passage is closed when wind and rain enter the ventilation passage. A ventilating structure for an attic, which is characterized in that a switch valve that can be installed is detachably mounted in the fitting recess.

In the above-mentioned second invention, as in the first invention, a fitting recess is provided at a predetermined position on the rising surface of the ventilation passage, and the on-off valve is detachably mounted in this fitting recess. When the wind is strong such as a typhoon, the on-off valve is automatically rotated to close the ventilation passage, and rainwater can be prevented from entering the attic through the ventilation passage. Further, when the on-off valve deteriorates due to long-term use, the old on-off valve can be removed and replaced with a new on-off valve easily.

The gist of the third aspect of the ventilation structure for the attic according to the present invention is to provide a fitting recess on each of the standing surfaces on both sides of the ventilation passage, and a noncombustible volume expansion material in one fitting recess. A first invention or a second invention characterized in that it is detachably mounted, and an on-off valve is detachably mounted in the other fitting recess.
It is the ventilation structure of the attic of the invention.

In the third aspect of the invention, the fitting recesses are provided on both upright surfaces of the ventilation passage, the non-combustible volume expansion material is mounted in one fitting recess, and the other fitting recess is provided. Since the on-off valve was detachably attached to the place, in the event of a fire, the non-combustible volume expansion material was expanded to prevent the flame from passing through the ventilation passage,
When the wind is strong, the on-off valve automatically closes the ventilation passage to prevent rainwater from entering the attic.

The gist of the fourth aspect of the attic ventilation structure according to the present invention is that the second aspect is characterized in that a recess is provided at a predetermined position below the fitting recess in which the on-off valve is mounted. Alternatively, it is the ventilation structure of the attic of the third invention.

In the above-mentioned fourth invention, since the recess is provided at a predetermined position below the fitting recess in which the on-off valve is mounted, the action of this recess allows the vane portion of the on-off valve to pass through the ventilation passage. This makes it easier to receive the wind, which allows the on-off valve to move smoothly. Further, when the on-off valve is set to be closed at an appropriate wind speed, it can be carried out by adjusting the shape and size of the recess.

The gist of the fifth aspect of the ventilation structure for the attic according to the present invention is that the ventilation hole provided in the ceiling portion of the ventilation passage can be closed by the opening / closing valve placed in the fitting recess. The attic ventilation structure according to the second, third, or fourth aspect of the invention is characterized in that it is configured.

In the fifth aspect of the invention described above, the ventilation hole provided in the ceiling of the ventilation passage is closed by the on-off valve mounted in the fitting recess as described above, so that when strong winds occur. The on / off valve can be activated to close the ventilation hole and prevent rainwater from entering the attic. Also, a predetermined space can be formed between the ceiling part of the ventilation passage and the on-off valve,
If the on-off valve is closed, a fine gap is formed between the tip edge of the on-off valve and the ceiling of the ventilation passage, and even if water leaks from this gap, water can be received in the space,
Water can be prevented from entering the attic.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a ventilation structure for an attic according to the present invention will be specifically described with reference to the drawings. FIG. 1 is a longitudinal sectional explanatory view showing a main part of the ventilation structure for an attic according to the present invention. 2 (a) and 2 (b) are explanatory views of the ventilation fitting of FIG. 1, FIG. 3 is a cross-sectional explanatory view showing a change of the place where the ventilation passage is formed, and FIG. 4 is also a change of the place where the ventilation passage is formed. It is sectional explanatory drawing which shows.

FIG. 5 is a cross sectional view showing a state where the non-combustible volume expansion material is expanded during a fire, FIG. 6 is a cross sectional view showing a state where the on-off valve closes the ventilation passage at the time of typhoon, and FIG. FIG. 9 is a cross-sectional explanatory view showing the configuration, FIG. 8 is an explanatory view showing a replacement state of the noncombustible volume expansion material, and FIG. 9 is an explanatory view showing a replacement state of the on-off valve.

In FIG. 1 and FIG. 2 (a), reference numeral 1 is a ventilation hardware used in the fireproof ventilation structure of the present invention. The ventilation hardware 1 is integrally formed as a whole by bending and pressing one steel plate, a steel plate such as a stainless plate by a cold roll forming method or the like.

A ventilation passage 2 having an open lower portion is provided at a substantially central portion of the ventilation hardware 1. Both sides of the ventilation passage 2 are formed by standing surfaces 3 and 4, and an upper portion thereof is formed by a ceiling surface 6 having a large number of slit holes 5.

A horizontal mounting piece 7 is connected to one side of the ceiling surface 6. Moreover, a mounting hole 8 is bored at a predetermined position of the horizontal mounting piece 7.

A ceiling parting portion 9 and a wall parting portion 10 are integrally connected to both lower sides of the ventilation passage 2. A rising piece 11 is formed by bending upward at the tip edge of the ceiling parting portion 9, and the end of the ceiling plate can be inserted between the rising piece 11 and the horizontal mounting piece 7. Has been done. Further, a curved edge 12 is provided at the tip edge of the wall parting portion 10.

A substantially U-shaped fitting recess 13 is provided at a predetermined position on the upright surface 3. As is clear from the figure, the fitting recess 13 is formed so that the inlet opening is narrow and the inner part is wide. A is a noncombustible volume expansion material that is detachably mounted in the fitting recess 13. Since this non-combustible volume expansion material A is formed of an elastic body, by pushing it toward the inner part from the inlet opening,
It can be easily mounted in the fitting recess 13 without using an adhesive or an adhesive tape.

The upper portion of the upright surface 4 corresponding to the upright surface 3 is inclined outward, and a substantially U-shaped fitting recess 14 is formed at a predetermined position on the inclined surface. There is. Like the fitting recess 13, the fitting recess 14 is also formed so that the inlet opening is narrow and the depth behind it is wide.

An on-off valve 15 is mounted in the fitting recess 14. As is apparent from the drawing, the opening / closing valve 15 is fitted in the fitting recess 14 so as to be detachably mountable.
5a and a blade-shaped operating portion 15 that operates when a strong wind hits
b.

Reference numeral 16 is a recess, which is provided at a predetermined position below the fitting recess 14 of the upright surface 4. Therefore, the tip of the actuating portion 15b of the on-off valve 15 mounted in the fitting recess 14 is located above the inlet opening of the recess 16, and when strong wind enters the ventilation passage 2, the recess is formed. 1
Since the wind passing through 6 hits the operating portion 15b of the on-off valve 15, the operating portion 15b is rotated by this wind force, and the ventilation passage 2 is closed by this operating portion 15b, and it is possible to prevent wind and rain from entering the attic. .

The operating portion 15b is integrally connected to the fitting portion 15a via a hinge portion 15c having a predetermined elasticity. The operation of the operating portion 15b can be adjusted depending on the strength of the hip of the hinge portion 15c.

The recess 16 lifts the operating portion 15b of the on-off valve 15 from the upright surface 4 to form a gap,
This prevents the operation portion 15b from becoming difficult to operate due to the surface tension of rainwater or the like. Therefore, since the recess 16 has a great effect on the operation of the operating portion 15b, the operation of the operating portion 15b can be restricted by the shape, the size, the place where the recess 16 is provided, and the like.

As shown in FIG. 1, the ventilation hardware 1 is inserted between the outer wall 17 of the building and the eaves ceiling plate 18,
It is attached and fixed to the eaves ceiling substrate 20 via a screw 19 inserted through the attachment hole 8 of the ventilation hardware 1. Therefore, in the case of the embodiment of FIG. 1, the ventilation passage 2 is provided near the outer wall 17 of the building.

Reference numeral 21 in the drawing denotes a vertical furring strip provided between the outer wall 17 and the building frame 22. Reference numeral 23 is a nose cover plate, 24 is a nose cover base, and 25 is a roof.

In the embodiment shown in FIG. 1, the ventilation passage 2
Is provided near the outer wall 17 of the building, the ventilation passage 2 can be provided near the nose cover plate base 24 as shown in FIG. Further, as shown in FIG.
It is also possible to provide the ventilation passage 2 approximately in the middle of the nose cover plate 23.

In the above-described embodiment, fitting recesses 13 and 14 are provided on the upstanding surfaces 3 and 4 on both sides of the ventilation passage 2, and one fitting recess 13 is made of a noncombustible volume expansion material. A is installed, and an on-off valve 15 is installed in the other fitting recess 14, and the non-combustible volume expansion material A and the on-off valve 15 are used.
It is not always necessary to install side by side and it is naturally possible to implement only one of them. Further, in the above-described embodiment, the specific example in which the present invention is applied to the eaves has been described, but the above-mentioned first invention of the present invention can also be implemented by being configured on an indoor ceiling.

In the structure of the present invention, as shown in FIG. 5, when a fire occurs and hot air or flame enters the ventilation passage 2, the noncombustible volume expandable material A immediately foams. And expands, which causes the non-combustible volume expansion material A to form the ventilation passage 2
Can be completely closed to prevent hot air and flame from passing through the ventilation passage 2 and entering the attic.

Further, when the wind pressure becomes strong due to a typhoon or the like and wind and rain start to enter the ventilation passage 2, this time, as shown in FIG.
The operating portion 15b of the on-off valve 15 operates, and the operating portion 15b
Rotates by the wind force to close the ventilation passage 2 so that rainwater can enter the inside of the attic through the ventilation passage 2.

Further, since a predetermined space 26 is formed between the opening / closing valve 15 and the ceiling portion of the ventilation passage 2, moisture enters from the contact surface between the tip edge of the opening / closing valve 15 and the ceiling portion. Even in this case, it is possible to prevent these moisture from remaining in the space 26 as a water pool and entering the inside of the hut. When increasing the space of the space 26, for example, as shown in FIG.
The space 26 can be enlarged by bending it upright and standing up.

In the present invention, when the non-combustible volume expandable material A mounted in the fitting recess 13 of the upright surface 3 of the ventilation passage 2 is deteriorated due to long-term use, as shown in FIG. After forcibly removing the non-combustible volume expansion material A while rotating it diagonally, this time, insert a new non-combustible volume expansion material A by pushing it into the fitting recess 13 while rotating it diagonally oppositely. You can

Next, the fitting recess 1 of the upright surface 4 of the ventilation passage 2
When the on-off valve 15 mounted on the No. 4 is deteriorated due to long-term use, as shown in FIG. 9, the fitting portion 15a of the old on-off valve 15 is gradually rotated and pulled out from the fitting recess 14, After that, the fitting portion 15a of the new on-off valve 15 can be fitted into the fitting recess 14 and can be inserted while being gradually rotated and deeply inserted.

[0040]

According to the present invention, when the ventilation passage surrounded by the upright surface on both sides is formed between the room and the attic, and the fitting recess is provided at a predetermined position of the upright surface. The non-combustible volume expansion material that expands in the event of a fire can be inserted in this fitting recess and mounted very easily. Further, the nonflammable volume expandable material is inexpensive because it does not require fixing of a double-sided tape, an adhesive, a stapler or the like. Further, when the non-combustible volume expansion material is deteriorated, it can be taken out from the fitting recess, and a new non-combustible volume expansion material can be reinserted and easily replaced.

In the present invention, when a fitting recess is provided at a predetermined position on the upright surface of the ventilation passage, and an on-off valve is detachably mounted in the fitting recess, this can be achieved during strong winds such as typhoons. The on-off valve can be automatically rotated to close the ventilation passage, and rainwater can be prevented from entering the attic through the ventilation passage. Further, when the on-off valve deteriorates due to long-term use, the old on-off valve can be removed and replaced with a new on-off valve.

In the present invention, fitting recesses are provided on both upright surfaces of the ventilation passage, one fitting recess is fitted with a non-combustible volume expansion material, and the other fitting recess is provided with an opening / closing valve. When the is attached detachably, the non-combustible volume expansion material is expanded during a fire to prevent the flame from passing through the ventilation passage, and when the wind is strong, the on-off valve automatically closes the ventilation passage to prevent rainwater from entering. It has the effect of preventing entry into the attic.

In the present invention, when the opening / closing valve mounted in the fitting recess is used to close the ventilation hole provided in the ceiling portion of the ventilation passage as described above, the opening / closing valve in strong wind. Has the effect of closing the ventilation holes and preventing rainwater from entering the attic. Further, a predetermined space can be formed between the ceiling part of the ventilation passage and the opening / closing valve, and when the opening / closing valve is closed, a fine gap is formed between the leading edge of the opening / closing valve and the ceiling part of the ventilation passage. Thus, even if water leaks from this gap, the water can be received in the space, so that it also has the effect of preventing water from entering the attic.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional explanatory view showing a main part of a ventilation structure for an attic according to the present invention.

2 (a) and 2 (b) are explanatory views of the ventilation fitting of FIG.

FIG. 3 is a cross-sectional explanatory view showing a change of a place where a ventilation passage is formed.

FIG. 4 is an explanatory cross-sectional view showing a change in a place where a ventilation passage is formed.

FIG. 5 is an explanatory cross-sectional view of a state where the noncombustible volume expansion material expands during a fire.

FIG. 6 is a cross-sectional explanatory view showing a state in which an opening / closing valve closes a ventilation passage during a typhoon.

FIG. 7 is a cross-sectional explanatory view showing the configuration of another on-off valve.

FIG. 8 is an explanatory diagram showing a replacement state of the noncombustible volume expansion material.

FIG. 9 is an explanatory diagram showing a replacement state of the on-off valve.

[Explanation of symbols]

1 Ventilation hardware 2 Ventilation passage 3 Standing surface 4 Standing surface 5 Slit hole 6 Ceiling surface 7 Horizontal mounting piece 8 Mounting hole 9 Ceiling parting portion 10 Wall parting portion 11 Standing piece 12 Curved edge 13 Fitting recess 14 Fitting recess 15 Open / close valve 15a Fitting part 15b Actuating part 15c Hinge part 16 Recess 17 Outer wall 18 Eaves ceiling plate 19 Screws 20 eaves ceiling base 21 Vertical furring strip 22 Building frame 23 Nose cover plate 24 Nose cover plate base 25 Roof 26 Space

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Koji Sato             2-20-5 Shimotani, Taito-ku, Tokyo Japanization             Gaku Sangyo Co., Ltd. (72) Inventor Hirofumi Sugimoto             7-28 Kitahama 4-28, Chuo-ku, Osaka City, Osaka Prefecture             Sumitomo Forestry Co., Ltd. F-term (reference) 2E001 DE03 DE04 FA15 FA17 FA20                       HB02 HB03 MA08 NC02 NC05                       ND23

Claims (5)

[Claims] 1. A ventilation structure in which a ventilation passage whose both sides are surrounded by upright surfaces is formed between the outside or the room and the back of a hut, and the lower portion of the ventilation passage is opened to the outside or the inside of the room. A ventilation hole is provided in the ceiling portion, a fitting recess is provided at a predetermined position of the upright surface, and a noncombustible volume expansion material is detachably mounted in the fitting recess. Ventilation structure in the attic. 2. In a ventilation structure in which a ventilation passage whose both sides are surrounded by an upright surface is formed between the outside or the room and the back of a hut, the lower part of the ventilation passage is opened to the outside or the inside of the room. A ventilation hole is provided in the ceiling portion, a fitting recess is provided at a predetermined position of the upright surface, and an on-off valve that can close the ventilation passage when wind and rain enters the ventilation passage is provided with the fitting recess. Ventilation structure in the attic, which is characterized by being detachably attached inside the facility. 3. A fitting recess is provided on each of the standing surfaces on both sides of the ventilation passage, a non-combustible volume expansion material is detachably mounted in one fitting recess, and the other fitting recess is opened and closed. The ventilation structure for the attic according to claim 1 or 2, wherein the valve is detachably mounted. 4. The ventilation structure for the attic according to claim 2, wherein a recess is provided at a predetermined position below the fitting recess in which the on-off valve is mounted. 5. A ventilation hole provided in a ceiling portion of a ventilation passage can be closed by an opening / closing valve placed in the fitting recess. Is the ventilation structure of the attic of claim 4.