JPH07229372A - Mounting structure for fire-preventive glass panel - Google Patents

Abstract

PURPOSE:To improve workability during a mounting work and firmly hold a fire-preventive glass panel upon occurrence of a fire by using a material capable of giving an expansion factor equal to or above the preset value for the prescribed temperature range, as a bulking agent for filling a gap between an interior wall and a fire-preventive glass panel. CONSTITUTION:A setting block 3 is provided on the bottom of the mounting groove 2a of a window frame 2. Then, a fire-preventive glass panel 1 is inserted in the groove 2a, while the peripheral edge thereof being kept in contact with the block 3. Thereafter, gaps 7a and 7b formed between the glass panel 1 and the inner surface of the groove 2a are filled with a thermally expansible bulking agent 8. In this case, a material capable of giving an expansion factor approximately two times as large as the preset value over a temperature range from 100 to 950 deg.C is used as the bulking agent 8. According to this construction, the glass panel 1 can be firmly held, and excellent fire-preventive function can be provided, when a fire takes place.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fireproof glass plate mounting structure applied to fireproof structures such as fire doors and walls.

[0002]

2. Description of the Related Art It is common practice to provide windows made of fireproof glass on fireproof structures such as fire doors and walls. In this way, when providing a fireproof glass window in a fireproof structure, attach a fireproof glass plate so as to satisfy the standards for Class A fire doors, Class B fire doors, fire walls, etc. stipulated by the Building Standards Act and Ministry of Construction Notification. Is often required. In particular,
Even if the fireproof glass plate is deformed due to the high temperature during a fire, the fireproof glass plate should not shake or come off the window frame.

FIG. 3 shows an example of a mounting structure for a fireproof glass plate which satisfies these standards. That is,
In the figure, 1 is a fireproof glass plate and 2 is a window frame. A mounting groove 2a is formed along the longitudinal direction on the inner peripheral surface of the window frame 2, and a setting block 3 made of an incombustible or flame-retardant material is laid in the longitudinal direction at the center of the bottom surface of the mounting groove 2a. ing. The fireproof glass plate 1 is fitted into the central portion of the mounting groove 2a such that the edge portion of the fireproof glass plate 1 is in contact with the setting block 3.

Since the width of the mounting groove 2a is generally set larger than the thickness of the fireproof glass plate 1, when the fireproof glass 1 is fitted, a gap 7a is formed between the fireproof glass plate 1 and the inner wall surface of the mounting groove 2a. , 7b are generated. One side of this gap 7a
A ceramic sheet (sheet made of ceramic fiber) 4 is filled in, and a ceramic rope (rope made of ceramic fiber) 5 is filled in the other gap 7b while being appropriately compressed. The openings of the gaps 7a and 7b are sealed with a fireproof sealant 6.

In such a conventional mounting structure for a fireproof glass plate shown in FIG. 3, an elastic heat-resistant material such as a ceramic fiber sheet, rope or round blade is used for the fireproof glass plate 1 and the inner wall surface of the mounting groove 2a. Are appropriately compressed and arranged in the gaps 7a and 7b, and the compression reaction force is used to grip the fireproof glass plate 1 and fix the fireproof glass plate 1 to the window frame 2.

[0006]

However, in the mounting structure using the elastic heat-resistant material as the filler as described above, the fireproof glass plate is held against the deformation of the fireproof glass plate due to the high temperature at the time of fire. It was necessary to compress and fill the above heat resistant material with a considerable pressing force. Since the compression and filling work is performed manually, the workability is poor and there is a problem that a considerable work time is required. Further, there is a problem that it is difficult to make the performance of the mounting structure constant because the filling work of each person tends to vary. Further, since the workability is poor, the construction cost is high.

Accordingly, an object of the present invention is to provide a structure for mounting a fireproof glass plate which has good workability at the time of installation and which strongly holds the fireproof glass plate in the event of a fire and exhibits excellent fireproof performance. is there.

In Japanese Patent Laid-Open No. 61-14384, expansion is performed under the influence of heat contained in an edge region on at least one side between a glass fitting edge or a corresponding frame member and a glass plate. Fireproof glass fitting structure with active substance,
And various expandable structural materials, expandable structures under the influence of heat, deformable closed systems containing gas volumes, and combination materials that deform due to different expansion rates during heating. However, the magnitude of expansion coefficient with respect to a specific temperature change has not been sufficiently examined, and cannot be put to practical use. Further, in the example using the combination material which is deformed due to different expansion rates during heating shown in the same publication, the mechanism is too complicated, the bimetal slips, and it does not function well, It was not the target.

[0009]

In order to achieve the above object, a structure for mounting a fireproof glass plate according to the present invention comprises a window frame (2) having a glass plate mounting groove (2a) on an inner circumference of a frame body.
A fireproof glass plate (1) having a peripheral edge fitted in the mounting groove (2a) and a filler filled in a gap (7a, 7b) between the inner wall of the mounting groove (2a) and the fireproof glass plate (1). In the structure for mounting a fireproof glass plate constructed, at least a part of the filler has a thermal expansion material whose expansion ratio becomes about 2 times or more due to temperature change from 100 ° C to 950 ° C (8).
It is characterized by consisting of.

In order to prevent the sash from being deformed by the expansion of the heat-expandable material, it is preferable that the coefficient of thermal expansion is about 30 times or less in consideration of the pressure due to the expansion of the heat-expandable material. . Further, if the expansion ratio is too small, the fireproof glass plate is not strongly held in the window frame, so that the effect of the present invention cannot be obtained.

In the present invention, as the heat-expandable material, a material containing ceramic fiber and vermiculite (expansion ratio of about 3 with temperature change from 100 ° C to 950 ° C) is used.
Double) or hydrous sodium silicate-based chloroprene rubber (10
It is preferable to use a material having an expansion ratio of about 8 times when the temperature changes from 0 ° C to 950 ° C. In particular, for materials containing ceramic fibers and vermiculite, there is directionality in the foaming direction and it expands only in the uniaxial direction. Therefore, by making the expansion direction perpendicular to the surface of the fireproof glass plate, it is more effective. The fireproof glass plate can be retained, and the effect is great.

[0012]

According to the fireproof glass plate mounting structure of the present invention,
When a mounting portion of the fireproof glass plate is exposed to a high temperature due to a fire or the like, the heat-expandable material expands, and the expansion pressure strongly holds the fireproof glass plate in the window frame. Therefore, it is possible to effectively prevent the fireproof glass plate from being thermally deformed and coming off the window frame.

Further, when arranging the filler, it is not necessary to strongly compress and pack the filler unlike the conventional ceramic rope, so that the mounting work can be performed easily and in a short time.

Further, according to the mounting structure of the present invention, the force with which the window frame holds the fireproof glass plate in the event of a fire is determined by the expansion coefficient and the filling amount of the heat-expandable material, so that the performance between workers can be improved. It is possible to significantly reduce the variation.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of a mounting structure for a fireproof glass plate according to the present invention. It should be noted that the substantially same parts as those of the mounting structure of FIG. 3 are designated by the same reference numerals to simplify the description.

This fireproof glass plate mounting structure is similar to the conventional mounting structure shown in FIG.
The setting block 3 is arranged at the bottom of a, and the fireproof glass plate 1 is fitted in the mounting groove 2a with the peripheral edge abutting against the setting block 3. And
Gap 7 between the fire protection glass plate 1 and the inner wall surface of the mounting groove 2a
In the above figure, a and 7b are filled with a material 8 containing a ceramic fiber as a thermally expandable filler and vermiculite so that the direction of thermal expansion is perpendicular to the surface of the fireproof glass plate. 3 is different from the mounting structure.

The opening of the mounting groove 2a is filled with a fireproof sealant 6. The thermal expansion direction of the thermally expandable filler 8 is only the direction of the force that holds the fireproof glass plate 1 on the window frame 2, and the fireproof sealant 6 is applied to the window frame 2 in an attempt to widen the space between the setting block 3 and the fireproof sealant 6. Two
It is most preferable because the force of peeling from it does not work, but other than that, the use of hydrous sodium silicate-based chloroprene rubber can be sufficiently used only for the purpose of holding the fireproof glass plate 1 on the window frame 2. .

In the above, as the fireproof glass plate 1,
Although not particularly limited, it is preferable to use low-expansion glass such as borosilicate glass, specifically, "Pyrex" (trade name, manufactured by Corning Glass Works, Inc.), "Pyran glass" (trade name) , Germany, manufactured by Schott), "Pyrobell" (trade name, manufactured by Graberbell, Belgium) and the like.

The thermally expansive filler 8 is required to have a coefficient of expansion of about 2 times or more when the temperature changes from 100 ° C. to 950 ° C. As described above, for example, a material containing ceramic fibers and vermiculite or Hydrous sodium silicate-based chloropropylene rubber and the like are preferably used, for example, referred to as "fire barrier", commercially available from Sumitomo 3M Co., Ltd., or Austria referred to as "Intumex", commercially available from Chemie Linz. You can use one. In addition, a thermal expansion material such as vermiculite or pearlite and a ceramic fiber or cloth containing alumina, silica or the like as a main component are bonded with an organic binder, for example, "interlam mat".
(Product name, manufactured by Sumitomo 3M Limited) can also be used. It is preferable that these materials have a softening temperature of about 500 ° C. or higher, an expansion starting temperature of about 100 ° C. or higher, and a low thermal conductivity after expansion.

In the present invention, the heat-expandable filler 8 as described above is added to the gaps 7a and 7a between the fireproof glass plate 1 and the inner wall of the window frame 2.
It is preferable to cut it to a thickness of 30 to 200%, preferably 50 to 150% of the width of b, and to fill it as it is or after compression if necessary. The thickness of the heat-expandable filler 8 is
If the thickness is less than 30% of the gap between the fireproof glass plate 1 and the inner wall of the window frame 2, the gap is not sufficiently filled and the fireproof glass plate wobbles, which is not preferable. If the gap between the fireproof glass plate 1 and the inner wall of the window frame 2 is thicker than 200%, the expansion pressure is too large and the window frame 2 is deformed when the heat-expandable filler 8 expands during a fire or the like. Therefore, it is not preferable. In the example of FIG.
The widths of the gaps 7a and 7b are both 5 mm, and the thermally expandable material 8 having a thickness of 4.5 mm is used.

The fireproof sealant 6 is not particularly limited, but for example, "sealant 74" manufactured by Shin-Etsu Silicone Co., Ltd. or "SH794" manufactured by Toray Dow Corning Silicone Co., Ltd. can be used.

FIG. 2 shows another embodiment of the mounting structure for the fireproof glass plate according to the present invention. Parts that are substantially the same as those in the embodiment of FIG. 1 are assigned the same reference numerals and explanations thereof are omitted.

In this embodiment, the fireproof glass plate 1 and the window frame 2
The ceramic sheet 4 is appropriately compressed and arranged in one of the gaps 7a and 7b formed between the inner wall and the inner wall of the other, and the other gap 7b is filled with the expansive filler as described above. A material 8 containing ceramic fibers as a material and vermiculite is arranged. The ceramics sheet 4 is not particularly limited, and those conventionally used can be used. Instead of the ceramic sheet, a ceramic fiber rope, a round blade or the like may be used.

[0024]

As described above, according to the present invention,
Since the filler made of the heat-expandable material is used as the filler for fixing the fireproof glass plate to the window frame, the work of attaching the fireproof glass plate is facilitated, and the performance of the attachment portion is also constant. Moreover, it strongly holds the fireproof glass plate in case of fire, and exhibits excellent fireproofing performance.

Further, in the present invention, sufficient consideration has been made, such as finding that the magnitude of expansion ratio with respect to a specific temperature change should be about twice or more with a temperature change from 100 ° C. to 950 ° C. Therefore, it is practically usable.

Further, when the heat-expandable material as the filler is a material containing ceramic fibers and vermiculite in particular, it has a direction of foaming and expands only in one axial direction. The vertical direction to the surface of the fireproof glass plate allows the fireproof glass plate to be held more effectively, so unlike the fillers made of other heat-expandable materials, the force to peel the fireproof sealant from the window frame is also increased. It does not work, and the expansion pressure is stable and efficient,
Highly effective, such as high fire resistance.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a structure for attaching a fireproof glass plate according to the present invention.

FIG. 2 is a cross-sectional view showing another embodiment of the mounting structure for the fireproof glass plate according to the present invention.

FIG. 3 is a sectional view showing an example of a conventional attachment structure for a fireproof glass plate.

[Explanation of symbols]

 1: Fireproof glass plate 2: Window frame 2a: Mounting groove 3: Setting block 4: Ceramics sheet 6: Fireproof sealant 7a, 7b: Gap 8: Thermal expansion filler

Claims (3)

[Claims] 1. A glass plate mounting groove (2a) on the inner periphery of a frame.
A window frame (2), a fireproof glass plate (1) whose peripheral portion is fitted in the mounting groove (2a), and gaps (7a, 7b) between the inner wall of the mounting groove (2a) and the fireproof glass plate (1). In a mounting structure of a fireproof glass plate composed of a filler filled in (1), at least a part of the filler has a thermal expansion property such that the expansion ratio becomes about 2 times or more with a temperature change from 100 ° C to 950 ° C. A structure for mounting a fireproof glass plate, which is made of a material (8). 2. The mounting structure for a fireproof glass plate according to claim 1, wherein the thermally expandable material (8) is a material containing ceramic fibers and vermiculite. 3. The mounting structure for a fireproof glass plate according to claim 1, wherein the heat-expandable material (8) is a hydrous sodium silicate-based chloroprene rubber.