JP4951234B2 - Ventilation structure behind the hut - Google Patents

Description

  The present invention relates to a ventilation structure in a shed, and in particular, prevents a fire from spreading by closing a ventilation passage formed outdoors or between the room and the shed at the time of a fire, or closes the ventilation passage in a strong wind. The present invention relates to a ventilation structure of a hut that can be easily and inexpensively configured to prevent wind and rain from entering the shed.

  In a conventional building, in order to improve the life of the building, there are many examples in which a ventilation passage leading to the back of the hut is formed on the eaves ceiling to ventilate the back of the hut.

  On the other hand, as a countermeasure against fire, non-combustible volume expansion material that expands due to heat in the ventilation passage in the back of the hut to prevent the intrusion of hot air and flame in the back of the hut from the ventilation passage in the back of the hut For example, Japanese Patent Application Laid-Open No. 6-73828 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2003-176597 (Patent Document 2) have been developed.

  As another countermeasure at the time of fire, as shown in, for example, Japanese Patent Application Laid-Open No. 2001-152598 (Patent Document 3) or Japanese Patent Application Laid-Open No. 2001-152599 (Patent Document 4), an incombustible obstacle of a predetermined shape is used. A combination of a non-combustible volume expansion material that expands with heat, and these are installed in a part of the ventilation passage in the back of the hut. These are activated in the event of a fire, and finally the ventilation passage is closed with a baffle plate. Therefore, a fire-proof dumbbell for ventilation that prevents intrusion of hot air and flame in the event of a fire has been developed.

  Further, unlike the above-described fire, a technique of providing an open / close valve in a ventilation passage in order to prevent rainwater from blowing into the back of a hut during a storm is also known from Japanese Patent Laid-Open No. 2003-176597 (Patent Document 2). ing. This technology is a technology that prevents the wind and rain from entering the back of the hut by operating the operating part of the on-off valve by wind force or negative pressure of the wind passing through the ventilation passage and closing the inside of the ventilation passage during a storm.

  In addition, a hut that can prevent fire heat and flame from entering the back of the shed via a ventilation passage in the event of a fire and at the same time prevent wind and rain from entering the back of the hut via a ventilation passage during a storm. Japanese Laid-Open Patent Publication No. 5-302370 (Patent Document 5) is known as a ventilation structure on the back side.

  In the structure of Patent Document 5, a plurality of projecting plates having different shapes are provided in a complex structure in advance in the ventilation passage, and a part of the projecting plates are rotatably supported. The overhanging plate and the fixed overhanging plate are connected and fixed with a thermal fuse, and when the thermal fuse is melted by heat in the event of a fire, In this structure, the ventilation passage is shielded by abutting against the fixed overhang plate.

JP-A-6-73828 JP 2003-176597 A JP 2001-152598 A JP 2001-152599 A JP-A-5-302370

  However, in Patent Document 2 or Patent Document 5, in the event of a fire, fire heat or flame is automatically prevented from entering the back of the hut through the ventilation passage, and in the case of a storm, Although the technology which has the function which can prevent that an invasion has been disclosed is disclosed, both had the following problems respectively.

  That is, in Patent Document 2, an incombustible volume expansion material for fire prevention and an on-off valve for preventing intrusion of wind and rain during a storm, respectively, in a ventilation passage for ventilating the back of a hut. There was a problem that it was necessary to equip, processing time and cost were increased.

  In particular, in the case of Patent Document 2, two fitting recesses for mounting and mounting the non-combustible volume expansion material and the on-off valve must be provided in one ventilation passage, so that the structure becomes extremely complicated. There was a problem that it was difficult to bend the steel sheet constituting the ventilation passage leading to the back of the hut, and the workability was not good.

  Further, in the case of the latter Patent Document 5, a plurality of projecting plates having different shapes are combined and a rotating shaft for rotating one projecting plate is provided, and this rotating projecting plate is rotated. The plate and the fixed overhanging plate must be connected by a thermal fuse, resulting in a complicated structure, a complicated assembly structure, and a high cost.

The first invention of the ventilation structure of the attic of the present invention is a technique developed in view of the above-mentioned conventional problems, and the configuration of the first invention is a ventilation passage for ventilating the attic of the building. A fitting recess is formed in a part thereof, and an on-off valve that can close the ventilation passage in a strong wind is attached, and the non-combustible that expands by heat in the fitting recess formed in a part of the on-off valve a ventilation structure of the attic, which was characterized by being integrally formed by fitting fixed sexual volume expansion material.

  The structure of the second aspect of the ventilation structure of the back of the hut according to the present invention includes an on-off valve in which a recess is formed in advance in a predetermined position in the ventilation passage, and the noncombustible volume expansion material is integrally attached in the recess. It is the ventilation structure of the back of a hut of 1st invention characterized by having mounted | worn.

According to a third aspect of the present invention, the on-off valve connects the pedestal portion having the insertion recess, the blade portion capable of closing the ventilation passage, and the pedestal portion and the blade portion. The ventilation structure of the back of a hut of the 1st invention or the 2nd invention which consists of a hinge part, and was comprised by inserting and fixing the said nonflammable volume expansion material in the fitting recess of the said base part.

  In the first invention of the ventilation structure of the attic of the present invention, an incombustible volume expansion material is attached to the on-off valve in the ventilation passage ventilated in the attic, and a part of the on-off valve is expanded by heat. Since the on-off valve and the non-combustible volume expansion material are integrated, the mounting position of both can be made one, simplifying the overall structure and making the structure cost extremely low I can do it.

In addition , since the fitting recess is formed in advance in a part of the on-off valve attached in the ventilation passage, the non-combustible volume expansion material can be fitted and fixed in the fitting recess in a stable state. In particular, by embedding a noncombustible volume expansion material in the fitting recess of the on-off valve, it is possible to prevent the noncombustible volume expansion material from protruding into the ventilation passage and hindering ventilation.

  In the second invention of the ventilation structure at the back of the hut of the present invention, since the on-off valve integrally attached with the non-combustible volume expansion material is mounted in a recess provided at a predetermined position in the ventilation passage, The structure of the ventilation passage can be simplified, and the on-off valve can be installed in the ventilation passage in a stable state. Therefore, the structure of the ventilation passage can be simplified and can be configured at low cost.

In the third invention of the ventilation structure of the back of the shed according to the present invention, the on-off valve is composed of a pedestal portion and a blade portion, and a hinge portion connecting the pedestal portion and the blade portion. It can be mounted and fixed in a stable state in the recess. In addition, since the insertion recess is provided in the pedestal portion, the non-combustible volume expansion material can be fitted and fixed in a stable state in the insertion recess, and the non-combustion volume expansion material can be integrally attached to the on-off valve. .

  An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall explanatory view of a ventilation structure of a hut back according to the present invention, FIG. 2 is an explanatory view of a main part of FIG. FIG. 4 is an explanatory view showing a state in which the ventilation passage is closed with an on-off valve, and FIG. 4 is an explanatory view showing a state in which the ventilation passage is closed with a noncombustible volume expansion material.

  In FIG. 1 to FIG. 4, reference numeral 1 denotes a building shed, which includes a roof 2, a nose cover plate 3, a nose cover plate base material 4, an eaves ceiling plate 5, and a field edge 6 that supports the eaves ceiling plate 5. The wall base material 7 is surrounded.

  A predetermined gap is provided between the wall base material 7 and the edge of the eaves ceiling board 5, and a shed back ventilation fitting 8 is inserted between the two. Slit holes 9 and 10 are formed in the lower surface and the upper surface of the attic ventilation bracket 8, respectively, so that the attic 1 and the outside of the building communicate with each other inside the attic ventilation bracket 8. A ventilation passage 11 is configured.

  A recess 12 is formed facing the ventilation passage 11 on the side of the wall base material 7 adjacent to the slit hole 9 at the bottom of the shed ventilation fitting 8, and an opening / closing valve 13 is formed in the recess 12. Is fixed in place.

  As shown in FIG. 2, the on-off valve 13 includes a bowl-shaped pedestal portion 13a, a panel-shaped blade portion 13b that can completely close the ventilation passage 11 by rotating, and the pedestal portion 13a and the blade. It is comprised by three members with the thin hinge part 13c which connects the part 13b mutually. In addition, a noncombustible volume expansion material 14 that is expanded by heat is fitted and fixed in the insertion recess 13d of the bowl-shaped base portion 13a. This incombustible volume expansion material 14 can be filled in advance and embedded in the insertion recess 13d of the pedestal portion 13a.

  The on-off valve 13 can be easily configured by injection molding a synthetic resin. In the figure, 15 is a screw for fixing the eaves ceiling board 5 to the field edge 6, 16 is a screw for fixing the roof back ventilation fitting 8 to the wall base material 7, and 17 is attached to the surface of the wall base material 7. The outer wall.

  In the present invention, as described above, the incombustible volume expansion material 14 is fitted and fixed in the insertion recess 13d of the base portion 13a of the on-off valve 13, and both the on-off valve 13 and the incombustible volume expansion material 14 are fixed. Since they are integrally connected, it is not necessary to provide two recesses for storing and fixing each in the ventilation passage 11, and the cross-sectional shape of the roof back ventilation fitting 8 constituting the ventilation passage 11 can be simply configured.

  Therefore, it is possible to facilitate bending of the steel plate constituting the attic ventilation bracket 8. In addition, since the incombustible volume expansion material 14 is attached in advance to the pedestal portion 13a of the on-off valve 13 and the both are integrated, the on-off valve 13 can be attached to the recess 12 of the ventilation passage 11, so that assembly work is easy. In addition, the manufacturing cost can be reduced.

  Since the ventilation structure of the back of the hut according to the present invention has the above-described structure, as shown in FIG. 3, the blade portion of the on-off valve 13 attached and fixed to the recess 12 in the ventilation passage 11 in the case of a storm. 13b is activated by the wind and rain passing through the ventilation passage 11, and is lifted by the action of the hinge portion 13c to automatically close the ventilation passage 11, and the wind and rain enter the cabin 1 through the ventilation passage 11. To prevent.

  In addition, when a fire occurs, as shown in FIG. 4, the non-combustible volume expansion material 14 that has been fitted and fixed in the fitting recess 13 d of the pedestal portion 13 a of the on-off valve 13 enters the ventilation passage 11. Or it expand | swells with a flame and closes the ventilation channel | path 11 and prevents that a fire heat | fever or a flame penetrate | invades into the hut 1.

  In the above-described embodiment, the roof back ventilation fitting 8 is inserted into the gap between the eaves ceiling plate 5 and the wall base material 7, and the ventilation passage 11 is formed inside the roof back ventilation fitting 8. The passage 11 can have various structures as will be described later.

  That is, in a simple structure, it is possible to provide a vertical ventilation passage between the incombustible eaves ceiling plate 5 and the incombustible wall base material 7 or the outer wall 17. Further, in order to stably attach the on-off valve 13 to which the non-combustible volume expansion material 14 is integrally attached to these ventilation passages, a metal fitting having a predetermined shape having a recess 12 is attached to a part of the ventilation passage. I can do it.

  In the configuration of the ventilation passage 11, as shown in Patent Document 3, a ventilation passage leading to the back of the hut 1 may be formed between the nose cover plate and the eaves ceiling plate. As shown, it is also possible to configure a ventilation passage leading to the back of the cabin 1 in the middle of the eaves ceiling board.

  The ventilation structure of the back of the shed of the present invention can be provided not only in the eaves ceiling of a building but also in a ventilation passage such as a veranda of the building.

It is whole explanatory drawing of the ventilation structure of a hut back. It is explanatory drawing of the principal part of FIG. It is explanatory drawing which shows the state which closes a ventilation channel with an on-off valve. It is explanatory drawing of the state which closes a ventilation channel with a nonflammable volume expansion material.

DESCRIPTION OF SYMBOLS 1 ... Building shed 2 ... Roof 3 ... Nasal concealment board 4 ... Nasal concealment board base material 5 ... Eave ceiling board 6 ... Field edge 7 ... Wall base material 8 ... Attic ventilation bracket 9 ... Slit hole 10 ... Slit hole DESCRIPTION OF SYMBOLS 11 ... Ventilation passage 12 ... Recess 13 ... On-off valve 13a ... Base part 13b ... Blade | wing part 13c ... Hinge part 13d ... Insertion recess 14 ... Nonflammable volume expansion material 15 ... Screw 16 ... Screw 17 ... Outer wall

Claims (3)

A fitting recess is formed in a part of a ventilation passage for ventilating the back of a building shed , and an on-off valve that can close the ventilation passage in a strong wind is attached, and the on-off valve is formed on a part of the on-off valve. A ventilation structure in the back of a hut characterized in that a noncombustible volume expansion material that expands due to heat is fitted and fixed in a fitting recess . 2. The ventilation structure of the attic of the hut according to claim 1, wherein a recess is formed in advance in a predetermined position in the ventilation passage, and an open / close valve in which the noncombustible volume expansion material is integrally attached is mounted in the recess. . The on-off valve is composed of a pedestal having an insertion recess, a vane that can close the ventilation passage, and a hinge that interconnects the pedestal and the vane, and the insertion recess of the pedestal The ventilation structure of the back of a hut of Claim 1 or Claim 2 comprised by inserting and fixing the nonflammable volume expansion material.

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