JP4764568B2 - Eave ceiling ventilation - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ventilation rim used for eaves ceilings of houses and the like, and more particularly to an improvement in a ventilation rim having a high fire resistance that automatically closes a ventilation opening in the event of a fire.
[0002]
[Prior art]
A technique for attaching a parting edge member with a vent to the eaves ceiling for the attic of a house and automatically closing the vent in the event of a fire has already been proposed by the present inventor (Japanese Patent Application No. 2000). -337575). In the structure, a heating expansion member is attached to the ventilation path that continues from the ventilation opening, and ventilation is allowed in the open state during normal times. In the event of a fire, the heating expansion member is inflated by the heat to block the ventilation path, and flame Is prevented from entering the attic.
[0003]
[Problems to be solved by the invention]
However, as a fire prevention measure, it is not sufficient to simply close the vent. This is because the eaves ceiling plate and the edge member are connected to each other with a groove formed in the edge member so that the edge of the eaves ceiling plate is fitted. As a result, the coupling portion can be loosened, and in some cases, a gap of several mm is generated between the groove and the edge of the eaves ceiling plate. And when such a gap is formed, hot air is transmitted from here to the back of the ceiling to promote the spread of fire.
[0004]
In view of such a point, the present invention prevents eaves from being transmitted to the back of the eaves ceiling by preventing a gap from being generated in the joint between the eaves ceiling plate and the edge material in the event of a fire. To provide edge material.
[0005]
[Means for Solving the Problems]
The technical means for the eaves ceiling ventilation rim material of the present invention includes an eaves passage continuing from a ventilation port formed on a plate surface of the eaves material, and eaves formed by being separated by the ventilation path and side walls on the side thereof. It has a groove part that fits and joins the edge of the ceiling plate , and a fire-resistant heating expansion member is attached to the bottom of the groove part and in the ventilation path, and when the fire breaks out, it is heated and expanded to fill the gap generated in the groove part , It is to block the air passage .
[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 a ventilation port 2, and the ventilation port 2 is composed of a number of elongated holes 3 as shown in FIG. 2. Further, the hole 3 is formed by a pressing process in which both side edges are cut, and consideration is given so that a flame does not blow into the back of the ceiling at a stretch.
[0008]
4 is a shielding plate that serves both as a blindfold and a water return, and is provided at a rear position of the ventilation opening 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 main body side of the parting edge material 1 for supplementary purposes. In the event of a fire, the expansion member 7 expands together with the expansion member 6 to block the ventilation path of the ventilation port 2. To do. Moreover, the groove part 8 for inserting and joining the end of an eaves ceiling board is provided in one side edge of the parting edge material 1, and the fire-resistant heating expansion member 9 is attached also to the groove bottom. .
[0010]
FIG. 3 shows a state in which the parting edge material 1 is attached toward the eaves of the eaves ceiling, in which 11 is an eaves ceiling board, 12 is a field edge, 13 is a nose cover, and 14 is a nose cover base. During normal times, the heating expansion members 6 and 7 are thin and do not interfere with each other, so that the outside air can freely flow into the attic through the ventilation opening 2 and the gap 5 as shown by the arrow A in the figure. However, in the event of a fire, the expansion members 6 and 7 receive heat and expand as shown in FIG. 4 to close the ventilation gap between the shielding plate 4 and the parting edge material body 1. Blocks the intrusion of flame as shown in B. When a fire occurs, the heating expansion member 9 also expands at the same time, filling a gap generated between the eaves ceiling plate 11 and the groove portion 8 so that hot air is not transmitted to the back of the ceiling.
[0011]
FIG. 5 shows an example of the parting edge member 21 attached to the eave ceiling wall side. In this embodiment, the shielding plates are provided in two stages. In normal times, after the outside air enters from the ventilation port 2 as indicated by the arrow C, the tip of the first shielding plate 22 is bypassed and the second shielding plate is provided. 23, passes through the hole 24 in the end wall, and flows into the attic. Further, in the event of a fire, the heating expansion members 6 and 7 expand to block the air passage and the heating expansion member 9 expands between the eaves ceiling plate 11 and the groove portion 8 in the same manner as in the previous embodiment. To fill the gaps that occur.
[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 shape of the groove 8, the coupling configuration of the groove 8 and the eaves ceiling plate 11, and the type of the heating expansion member 9 are free.
[0013]
【The invention's effect】
The eaves ceiling ventilation rim material of the present invention has a heating expansion member in the groove, and when a fire occurs, the heating expansion member expands and fills the gap formed between the eaves ceiling plate and the groove, Hot air is not transmitted to the back of the eaves ceiling, and the fire spread prevention effect can be enhanced. Furthermore, since the heating expansion member is fireproof, it can reliably maintain this shut-off state and has high reliability. In addition, the heating expansion member is attached to the bottom of the groove, so that it does not fall off due to collision with other objects during transportation or installation work, and the edge of the eaves ceiling board is inserted. There is no hindrance to the work, and there is no displacement at the member mounting position. The heated expansion member can always be heated and expanded reliably, and the gap generated between the eaves ceiling plate and the groove can be filled accurately. Can prevent the spread of fire.
[0014]
Furthermore, in 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, the heat expansion member expands and blocks the air passage due to the heat of the fire. Does not enter indoors and can suppress the spread of fire from the fire in the neighboring house. In addition, the air passage and the groove portion into which the eaves ceiling plate is fitted are completely separate, and each portion is separately and independently blocked by the heating expansion member, so that reliable blocking is possible.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an embodiment of an eaves ceiling ventilation rim material according to the present invention.
FIG. 2 is a surface view showing the shape of a ventilation opening.
FIG. 3 is a cross-sectional view showing a mounting state.
FIG. 4 is a cross-sectional view showing a state during a fire.
FIG. 5 is a cross-sectional view of another embodiment.
[Explanation of symbols]
1, 21 Parting edge material 2 Ventilation port 4 Shield plate 6, 7, 9 Heating expansion member 8 Groove portion 11 Eaves ceiling plate 22 First shield plate 23 Second shield plate 24 Hole

Claims (1)

An air passage that extends from the ventilation port formed on the plate surface of the edge member, and a groove portion that fits and joins the edge of the eaves ceiling plate that is formed by being divided by the air passage and the side wall on the side of the air passage ,
An eaves ceiling ventilation rim that attaches a fire-resistant heating and expansion member to the bottom of the groove and in the air passage, and expands by heating in the event of a fire to fill the gap formed in the groove and block the air passage .

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