JP4722282B2 - Vents for ventilation openings - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an edge member for a ventilation opening used for an eaves ceiling of a building such as a house.
[0002]
[Prior art]
For example, it has already been proposed by the present inventor to use a parting edge material with a ventilation opening for eaves ceiling for attic ventilation. This parting edge material is attached to the edge of the eaves side or the wall side of the ceiling board, and ventilation holes are formed at appropriate positions on the board surface. However, since the eaves is the place where the fire spreads most easily from the neighbor in the event of a fire, various restrictions are set for the total area, the size of each hole, and the like for the ventilation openings. On the previously proposed side, a method is adopted in which one ventilation port is constituted by a number of elongated holes, and each hole is formed by indentation.
[0003]
However, in the conventional parting material for ventilation, since the ventilation opening is always open, there is a problem that in the event of a fire, a flame enters the attic through the ventilation opening and easily spreads the fire. In particular, in a house or the like, even if a flame retardant material is used for the exterior material, the interior material is ordinary wood, and therefore it is extremely easy to spread the fire when fire enters the interior of the attic or the like.
[0004]
[Problems to be solved by the invention]
In view of such a point, the present invention is to provide an edge member for a ventilation opening that is excellent in fire prevention properties, which automatically closes a ventilation opening during a fire to prevent a flame from entering the room.
[0005]
Means to be Solved by the Invention
Technical means of the strip of the present invention, the bottom surface of Enzai body, have a ventilatory opening up of a number of elongated holes, and the hole is formed by pushing machining notched on both edges Therefore, in the rim material for the ventilation port where the flame is not blown at once, the upper part of the rim material body is open at the upper part of the ventilation port, and the upper surface plate is extended in parallel with the bottom surface on both outer sides of the open part. provided, and, on one of the upper plate are folded portion is formed by opening the vent distance above Spoons position vent, flat shielding plate is disposed in parallel with Enzai body bottom surface, the The shielding plate has a rear end inserted into the folded portion and is supported in a cantilevered state, and its front end extends to a position beyond the ventilation hole to provide an edge material. It is fixed parallel to the bottom of the main body, and a gap for ventilation is formed on the tip side. By being urchin arranged, is air passage continuing from the ventilation port formed between the Enzai body, further, the lower surface of the distal end portion of the shielding plate, mounted fire resistance of thermal expandable member, a normal time, the vent And the shielding plate serves as a blindfold to prevent the back of the ceiling from being seen through the ventilation opening, and serves as a water return to prevent rainwater that has entered from the ventilation opening from entering the back of the ceiling, When a fire occurs, the heating expansion member is expanded to block the air passage.
[0006]
Also, the Enzai bottom panel, may be attached to separate thermal expansion member so as to surround the ventilation openings.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the edge material of the present invention will be described based on examples of the drawings. FIG. 1 shows a cross-sectional view of an example used for a parting edge material for eaves ceiling ventilation. The material of the parting edge material 1 is made of a metal material such as a stainless steel plate. The parting edge material 1 is provided with ventilation openings 2 at appropriate intervals, and each ventilation opening 2 is composed of a number of elongated holes 3 as shown in FIG. Moreover, this hole 3 is formed by the indentation process which made the notch into both edges, and is considered so that a fire may not blow at a stretch.
[0008]
A shielding plate 4 is provided at a rear position of the ventilation port 2 with an appropriate ventilation interval. This shielding plate 4 is fixed to the rim material main body in a cantilever state, and is arranged so that a gap 5 for ventilation is formed on the tip side. A heating expansion member 6 is attached to the front end of the shielding plate 4 along the entire length. The heating expansion member 6 expands several times to several tens of times in the thickness direction when heated to a certain high temperature, for example, 200 ° C. or higher, and a commercially available one is used. For example, a synthetic resin base material containing a phosphorus compound, thermally expandable graphite, etc. is commercially available.
[0009]
Reference numeral 7 denotes a heating expansion member provided on the side of the main body of the parting edge material 1 for supplementation, and is attached so as to surround the ventilation port 2 in a U-shape as shown in FIG. Therefore, in the event of a fire, the expansion member 7 expands together with the expansion member 6, and the ventilation path is cut off so as to surround each vent 2.
[0010]
FIG. 3 shows a state in which the parting edge material 1 is attached toward the eaves of the eaves ceiling. In the figure, 11 is a ceiling board, 12 is a field edge, 13 is a nose cover, and 14 is a nose cover base. Under normal conditions, the heating expansion member 6 is thin and does not get in the way, so that the outside air can freely flow into the attic through the ventilation port 2 and the gap 5 as shown by the arrow A in the figure. However, in the event of a fire, the expansion member 6 receives heat and expands as shown in FIG. 4 to close the ventilation gap between the shielding plate 4 and the parting edge main body 1. To block the intrusion of flame. Since this expansion member 6 is fireproof, it can hold | maintain this interruption | blocking state for a long time. 3 and 4, the supplementary heating expansion member 7 is not shown, but this member 7 also expands at the same time so as to individually surround the surroundings of the ventilation ports 2, so that it is more reliable. Can block the intrusion of flame.
[0011]
Since the said shielding board 4 is located behind the ventilation opening 2, the role of the blindfold which prevents that a ceiling back is visible through a ventilation opening, and it prevents that rainwater penetrate | invades into a ceiling under the strong wind and rain. Can play the role of water return at the same time.
[0012]
The present invention is not limited to the above-described embodiments, and can be freely modified within the scope of the claims. In particular, the outer shape of the parting edge material 1, the hole shape of the ventilation port 2, the shape of the shielding plate 4, the type of the heating expansion member 6, and the like are free. Furthermore, the present invention can be widely used not only for parting edges but also for edges having ventilation openings, and for example, can also be used for draining with ventilation openings used at the lower end of a wall.
[0013]
In the rim material of the present invention, a heating expansion member is attached to the air passage that continues from the ventilation port, and in the event of a fire, it expands in response to the heat of the fire and blocks the air passage so that the flame enters the room. And can prevent the spread of fire in the event of a fire next door. Furthermore, since the heating expansion member is fireproof, it can reliably maintain a shut-off state and has high reliability. Further, in the present invention, the ventilation port is formed by a number of elongated holes on the bottom surface of the rim material body, and this hole is formed by a pressing process in which both edges are cut. In addition to the function of preventing blow-in at once, there is a function of blindfolding and water return, but in the present invention, a ventilation interval is opened at the upper back of the ventilation port, and the flat shield plate is passed over the hole of the ventilation port. Since the upper part of the hole is completely covered by the parallel arrangement up to the position, it enhances the prevention of the blaze of the flame, prevents the ceiling from being seen through the ventilation port, When it is strong, it can better serve to prevent rainwater from entering the back of the ceiling, increasing the commercial value.
[0014]
In addition, in the present invention, the bottom surface of the rim material body provided with the ventilation opening and the flat shield plate are arranged in parallel with a ventilation interval, and the ventilation path formed therebetween has a ventilation path. There is no element that obstructs the above, and high ventilation performance can be obtained. Furthermore, since the shielding plate is a type in which the rear end portion is inserted into the folded portion formed on the upper surface plate of the rim material main body and is supported in a cantilever state, the structure including the formation of the air passage is simplified. It can be manufactured inexpensively. Furthermore, the tip of the shielding plate extends to a position beyond the ventilation hole, and a heating expansion member is attached to the lower surface of the tip, so that when a flame enters, the member expands. Thus, it comes into contact with the bottom surface of the rim material main body and reliably blocks the air passage.
[0015]
According to the second aspect of the present invention, since the separate heating expansion member is attached so as to surround the ventilation port, the ventilation blockage can be performed more reliably.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an embodiment used as a parting edge material for eaves ceiling ventilation.
FIG. 2 is a rear view showing a shape of a ventilation opening of a parting edge material.
FIG. 3 is a cross-sectional view showing a mounting state of a parting member.
FIG. 4 is a cross-sectional view showing a state during a fire.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Parting edge material 2 Ventilation port 3 Hole 4 Shielding plate 5 Ventilation gaps 6 and 7 Heating expansion member

Claims (2)

The bottom surface of Enzai body, have a ventilatory opening up of a number of elongated holes, and the holes, be formed by pushing machining notched on both edges, for vents flame is not blown stretch In the edge material,
The upper part of the ventilation member is open at the upper part of the ventilation port, and an upper surface plate is provided on both outer sides of the open part so as to extend in parallel with the bottom surface, and a folded part is formed on one upper surface plate. Has been
A flat shielding plate is arranged parallel to the bottom surface of the rim material main body, with a ventilation interval at the upper back position of the ventilation port,
The shielding plate has a rear end inserted into the folded portion and is supported in a cantilevered state, and its tip extends to a position beyond the ventilation hole, It is fixed in parallel with the bottom surface of the material body, and at the tip side of the material body, it is arranged so that a gap for ventilation is formed, so that a ventilation path that continues from the ventilation port is formed between the edge material body And
Furthermore, a fire-resistant heating expansion member is attached to the lower surface of the front end of the shielding plate ,
In normal times, ventilation is allowed, and the shielding plate serves as a blindfold to prevent the ceiling from being seen through the ventilation openings, and as a water return function to prevent rainwater entering from the ventilation openings from entering the ceiling. And
In the event of a fire, a vent edge material that expands the heating expansion member to block the air passage. The back of Enzai bottom panel, ventilation openings for the strip of claim 1 wherein, fitted with a separate heating expansion member so as to surround the ventilation openings.

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