JPH0637195Y2 - Fireproof frame structure for building openings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a fireproof frame structure for a building opening.

<Prior art> The wooden frame, which has been used as a general opening frame since ancient times, is excellent in the beauty of wood, workability, and heat retention, but it is fatal that it burns or spreads in the event of a fire. However, it cannot be used as it is as a fire protection frame for buildings.

Therefore, as a conventional fire protection frame structure for the opening,
It is usual to use a frame made of aluminum, an inorganic material, or the like, combined with a heat insulating material or a fireproof material, and further, those having a surface made up by applying a thin wooden plate, printing, painting, or the like.

<Problems to be solved by the invention> However, in the case of a metal fire protection frame, it is effective in fire prevention, but effective heat insulation is difficult because the heat bridge or cold bridge at the joint part becomes an obstacle, and In addition to poor workability, those made of materials have the drawback that the nails for attaching attached parts and screws have poor nail holding power.

<Means for Solving the Problems> The present invention is to provide a groove over the entire circumference of the surface of the wooden frame provided in the building opening that abuts the opening member, and the groove is made of nonflammable heat-foamable material. An architectural opening characterized in that the surface of the sealing material is covered with a thin film having excellent heat transfer properties through its self-adhesive property while the sealing material is filled and the sealing material is not solidified. It is a fireproof frame structure.

As the above-mentioned thin film, a film that is easily broken by the pressure due to the foaming when the sealing material is heated and foamed is preferable.

The sealing material is, for example, a caulking material containing a non-combustible heat-foamable component as a main material, has self-adhesiveness in a state of being press-filled into the bottom side of the groove, and then solidifies with time.

<Operation> In the wood frame of the present invention having the above-described configuration, when an opening member such as a door or a window is heated during a fire, this heat is immediately transferred to the entire circumference of the wood frame through the thin film covering the sealing material. The sealing material that has diffused and filled the entire circumference of the wooden part frame is heated almost uniformly. Therefore, when the temperature rise in the gap between the wooden frame and the door or window due to a fire reaches the foaming temperature of the sealing material, this sealing material heats and foams almost all over the entire circumference of the wooden frame. As a result, the entire gap between the door, the window, etc. and the wooden frame is sealed by the non-combustible bubbles generated by the foaming.

In addition to the above, the thin film used as the outer cover of the sealing material functions to prevent the sealing material from secular change and improve its durability, and also functions to prevent stickiness and give an aesthetic appearance.

And because the wooden frame is used in this way, it has good workability and nail retention.
Furthermore, the heat insulation and heat retention properties are remarkably good.

<Embodiment> An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1 In FIG. 1, a cross section of one side end surface of a rectangular material measuring 40 mm × probable 90 mm using sawdust wood Grooves 2a and 2b having a width of 10 mm and a depth of 5 mm are provided over the entire circumference on each of the two surfaces of the wooden frame 1 projecting as the door stop of the mold, which are in contact with the opening member. Although the illustrated groove portion has a cross-sectional shape, it may have a V shape, a U shape, a semicircular shape, or the like, and may have another groove portion formed at the center of the cross-sectional groove, for example. Needless to say.

Then, a sealing material 3 containing sodium silicate as a main material was press-fitted and applied on the bottom sides of the grooves 2a and 2b, respectively. Instead of this sodium silicate, other nonflammable, heat-foamable inorganic substances such as perlite and permiculite can be used. Also, this sealing material 3
A thin film 4 made of a strip-shaped aluminum foil having a thickness of 0.083 mm and a width of 12 mm was closely adhered to the surface of, and the thin film 4 was adhered to the surface of the sealing material 3 by the self-adhesiveness of the sealing material 3. The thin film 4 may be made of any material as long as it has excellent heat transfer properties and is easily broken by the pressure caused by the foaming of the sealing material, and may be a single-layer material or a multi-layer material.

Using the wood frame of the present invention having the above structure, a heating test was conducted in the following procedure.

That is, regarding the wood frame of the present invention and the same wood frame for comparison except that the sealing material surface is not covered with aluminum foil, as shown in FIGS. JIS A1311 is used as the surface material, and the shaft test piece with the wood part and the door test piece 6 are all arranged in the heating test.
A heating test was carried out for 1 hour along a fireproof standard heating curve based on the "fireproof test method for building fire doors", and the results shown in Fig. 3 and Table 1 were obtained.

In FIG. 3, I is the average temperature in the furnace on the heating side, II
Is the average surface temperature of the door specimen 6 on the non-heated side, and III is the average temperature in the gap between the wooden frame 1 and the door specimen 6 on the non-heated side. Also, the first
The average temperature in the table is the average temperature of the gap on the non-heated side.

From the above results, the temperature rise in the gap was 190 ° C when the wood frame of the present invention was used.
For comparison, it reached over 260 ℃. From this, the effect of fire protection is small if the groove is simply filled with the sealing material, but by coating the surface of this sealing material with the thin film as described above, the degree of fire protection is significantly increased and the temperature rise is significantly suppressed. It was confirmed that it was possible. When the wooden frame after the test was examined, in the case of the present invention, in the state of FIG. 4, the foaming of the sealing material 3 was carried out almost uniformly over the entire circumference of the gap between the wooden frame and the opening member. However, it is considered that this is the reason why the temperature rise can be significantly suppressed as described above. In the figure, 7 is a carbonized portion.

In addition, the concentration of smoke leaking to the adjacent room (non-heating side) is JISA13
21 As a result of measuring with a smoke collection box and a light quantity measuring device in accordance with “Inflammability test method for interior materials of construction and construction method”, the smoke emission coefficient (CA) per volume is also small in this invention, and high smoke prevention Showed the effect. The smoke generation coefficient is also shown in Table 1.

It should be noted that the above is an example in which a door is combined with a wooden frame, but it is clear that the same effect can be obtained also in the case of combining a wooden frame and a window.

<Effect of device> As described above, according to the fireproof frame structure of this device, when the wood frame is used, the temperature rise on the non-heating side can be significantly suppressed, and at the same time, smoke emission can be effectively prevented. It has the effect.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of a wooden frame of an embodiment of the present invention, and FIG.
FIG. 2A is an explanatory view of the test piece used for the heating test, FIG. 2B is a sectional view taken along the line AA in FIG. 2A, and FIG. 2C is FIG. 2A. 2B is a sectional view taken along the line BB in FIG. 2, and FIG. 2D is a sectional view of an essential part of the wooden frame portion of this specimen.
FIG. 3 is a graph showing a temperature curve during the heating test, and FIG. 4 is a cross-sectional view of the wood frame portion of the test piece after the heating test. 1 ... wood frame, 2a, 2b ... groove, 3 ... sealing material,
4 ... Thin film.

Claims (1)

[Scope of utility model registration request] 1. A groove is provided along the entire circumference of a surface of a wooden frame provided in an opening for construction that comes into contact with an opening member, and the groove is filled with a non-combustible heat-foaming sealing material, and further above. A fireproof frame structure for a building opening, characterized in that the surface of this sealing material is covered with a thin film having excellent heat transferability.