JPH05125877A - Fire door - Google Patents

Abstract

PURPOSE:To normally increase the rigidity of a fire door so that it is not curved and deformed at the time of a fire. CONSTITUTION:Upper and lower core members 11, 11 and right and left core members 11, 11 connected to each other by an expansion and contraction joint 30 at the longitudinal intermediate part are squarely framed to form a skeleton body. Then fireproofing plates are mounted on both outside faces and one inside face of the respective core members 11 of the skeleton body, and decorative members for covering the fireproofing plates are mounted on the plates to form framed body. A connecting member 31, which fixes the expansion and contraction joint on one core member 11 is fitted into the other core member 11, and the connecting member and the other core member are clamped and connected through washers 34 made of a low melting point material by screws 33 penetrating through a long hole 32. Thus, since the washers 34 are melted away at the time of a fire, the connecting member 31 and the other core member 11 are relatively slid on each other to absorb thermal expansion of the core member 11.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a fire door.

[0002]

2. Description of the Related Art As a fire door, for example, Japanese Patent Application Laid-Open No. 2-14
The one shown in Japanese Patent No. 0383 is known. That is, an H-shaped mold steel member and a fire-resistant material are loaded in the cavity of the synthetic resin main body, and the heat-resistant deformation characteristics are secured by the mold steel member, and the fire-resistant frame that secures the fire resistance by the fire-resistant material is framed in a rectangular shape. , A fire door with glass inside is known.

[0003]

With such a fire door, the steel members of each frame cannot be directly connected to each other because the steel members are thermally expanded during a fire, and the rigidity of the fire door is weakened. That is, if the steel members of each frame are directly connected to each other, the glass materials may be deformed due to thermal expansion of the steel members at the time of fire, and the glass may come off.

Therefore, an object of the present invention is to provide a fire door which can solve the above-mentioned problems.

[0005]

[Means for Solving the Problems] Upper and lower core members 11, 11 having a rectangular cross section excellent in rigidity and heat resistance, and a rectangular cross section excellent in rigidity and heat resistance are connected by an expansion joint 30 at an intermediate portion in a longitudinal direction. The left and right core members 11, 11 are framed in a rectangular shape to form a skeleton, and fireproof plates 17, 15 are attached to both side faces in the out-of-plane direction and one side in the in-plane direction of each core member 11 of this skeleton, respectively. An inwardly facing glass mounting recess 19 is formed on the other side in the in-plane direction, and a decorative material 20 is mounted on the outer surface of each of the refractory plates 17 and 15 to form a framework 4, and each glass mounting of this framework 4 is carried out. The glass 5 is mounted over the concave portion 19, and the expansion joint 30
The connecting member 31 fixed to one core member 11 is slidable along the other core member 11, and the screw 33 is screwed into the connecting member 31 through the long hole 32 in the longitudinal direction of the other core member 11. Then
Further, a fire door in which a washer 34 made of a low melting material is interposed between the head 33a of the screw 33 and the other core material 11.

[0006]

[Operation] The left and right core members 11 constituting the skeleton framed in a rectangular shape are connected by expansion joints 30. Normally, the expansion joints 30 are connected by a screw 33 on one side in the longitudinal direction, and both core members are connected by a connecting member 31. And the rigidity of the skeleton can be increased, and the washer 34 is softened or melted in the event of a fire, so that the connecting member 31 and the other core member 11 can slide relative to each other to prevent thermal expansion of the core member 11. Absorb.

[0007]

[Example] As shown in FIG. 1, a glass 5 having excellent heat resistance is installed in a frame 4 in which a fire-resistant upper frame 1, a fire-resistant lower frame 2 and left and right fire-resistant vertical frames 3 and 3 are framed in a rectangular shape. Constitutes a fire door.

The fireproof upper frame 1, the fireproof lower frame 2, the fireproof vertical frame 3
As shown in FIG. 2 and FIG. 3, a pair of U-shaped channel members 10, 10 is provided with a core member 11 which is superposed so as to face each other. The core member 11 is a pair of first first members facing each other in an out-of-plane direction. Wall 12, 1
A pair of second walls 13 and 13 facing each other in the in-plane direction form a hollow member having a rectangular cross section, and a pair of first walls 12 is attached with a mounting plate 14 wider than the core member 11 to form a pair. Of the mounting plate 14 and an outer side fireproof plate 15 in the out-of-plane direction is attached along the inner side surface 14a of each mounting plate 14 and one of the second walls 13 and is fixed with a screw or a fireproof adhesive. A fireproof plate 17 is attached to the outer side surface 14b of the plate 14 so as to be attached thereto.
8, the outer surface of the core material 11, both side surfaces, and one surface in the in-plane direction are covered with fire-resistant plates 15 and 17 to form an inward glass-mounting concave portion 19 in the in-plane direction. 15,
A pair of out-of-plane direction decorative materials 20 are attached to the outer surface of the outer surface 17 of the one side piece 20 a and the other side piece 20 a.
The connecting piece 20 and the connecting piece 20c have a U-shaped cross section.
c is fixed to the core material 11 with a screw 21 and a pair of decorative materials 2
The one side pieces 20a of the Nos. 0 and 20 are separated from each other and the other side pieces 20b are separated from each other, and the glass 5 is supported in the glass mounting recess 19 by a fireproof sealing material 22 such as a burning gasket. The decorative material 20 may be attached in a snap type without being screwed.
As shown in FIG. 4, each core member 11 is framed to form a skeleton structure, and the core members 11 of the left and right fireproof vertical frames 3 and 3 are composed of two upper and lower members, and an expansion joint at an upper and lower intermediate portion. The fireproof plates are attached to one side surface in the out-of-plane direction, the other side surface and one side in the in-plane direction of the frame body. The core material 11 and the mounting plate 14 are made of a material such as steel having high rigidity and excellent fire resistance, and the fire resistant plates 15 and 17 are made of a material having excellent fire resistance such as a calcium silicate plate, an ALC plate, and a concrete plate. The decorative material 20 is made of an easily processable material such as aluminum, plastic, or wood. Because it is like this, in the event of a fire 2
Even if 0 disappears, framed core material 11 and fireproof plates 15, 1
The glass 5 can be held by 7 so that the glass 5 does not fall off.

As shown in FIGS. 5 and 6, the expansion joint 30 has a connecting member 31 having a U-shaped cross section slidably fitted in the upper and lower core members 11, 11. One end of the core material 11 is fixed to one core material 11 with screws, welding, etc., and the other core material 1
A screw 33 is fastened to the connecting member 31 through a long hole 32 formed in the second wall 13 of one side in the longitudinal direction, and aluminum is provided between the head 33a of the screw 33 and the second wall 13 of the one core 11. A washer 34 made of a low-melting material having a lower melting temperature than the core material 11, such as plastic or copper, the connecting material 31, and the screw 33 is interposed.

Because of this, normally, the other core material 11 and the connecting material 31 are firmly connected by the screw 33 and do not slide, so that the upper and lower core materials 11, 11 can be firmly connected, and at the time of a fire, a high temperature is generated. As a result, the washer 34 is softened or melted, and a gap is created between the head portion 33a of the screw 33 and the one second wall 13 of the core material 11, so that the connecting material 31 and the other core material 11 relatively slide. Since it is free, it does not absorb the thermal expansion of the core material 11 to be bent and deformed.

[0011]

EFFECTS OF THE INVENTION The left and right core members 11 forming a skeleton frame having a rectangular shape are connected by an expansion joint 30, and the expansion joint 30 is normally connected by a screw 33 on one side in the longitudinal direction and on both core members. The frame 31 can be strongly connected by being firmly connected with 31, and the washer 34 is softened or melted in the event of a fire, so that the connecting member 31 and the other core member 11 can relatively slide and the core member 11 is thermally expanded. Absorbs. Therefore, the rigidity can be increased during normal times, and the core material 11 will not be bent and deformed due to thermal expansion during a fire.

[Brief description of drawings]

FIG. 1 is a front view of a fire door.

FIG. 2 is a vertical sectional view of a fire door.

FIG. 3 is a cross-sectional view of a fire door.

FIG. 4 is a front view of a frame body.

FIG. 5 is a sectional view of an expansion joint.

FIG. 6 is an exploded perspective view of the expansion joint.

[Explanation of symbols]

1 ... Fireproof upper frame, 2 ... Fireproof lower frame, 3 ... Fireproof vertical frame, 4 ... Frame assembly, 5 ... Glass, 11 ... Core material, 12 ... First wall, 13 ... Second wall, 14 ... Mounting plate, 15 … Fireproof plate, 17… Fireproof plate, 1
9 ... Glass mounting recess, 20 ... Decorative material, 30 expansion joint,
31 ... Connection member, 32 ... Long hole, 33 ... Screw, 33a ... Head, 34 ... Washer.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Hiroshi Kiyokawa 4-6-15 Sendagaya, Shibuya-ku, Tokyo Fujita Co., Ltd. (72) Inventor Mitsuharu Hirasawa 4-6-15 Sendagaya, Shibuya-ku, Tokyo Share ceremony Company Fujita (72) Inventor Hiroshi Nojima 4-6-15 Sendagaya, Shibuya-ku, Tokyo Stock Company Fujita (72) Inventor Tatsuhiro Saga 3-18-5 Shakujii, Nerima-ku, Tokyo Hiroshi Takeda 970-6 Higashi Somei, Nagareyama City, Chiba Prefecture (72) Inventor Isao Yokotani 3-8-1, Negishi, Urawa City, Saitama Prefecture (72) Inventor Hideo Tsuchida 3-1-1 Kahei, Adachi-ku, Tokyo

Claims (1)

[Claims] 1. A pair of upper and lower core members 11, 11 having a rectangular cross section excellent in rigidity and heat resistance, and a left and right core members 11 having a rectangular cross section excellent in rigidity and heat resistance, which are connected by an expansion joint 30 at an intermediate portion in a longitudinal direction. Frames 11 and 11 are framed in a rectangular shape to form a skeleton, and fireproof plates 17 and 15 are attached to both side surfaces in the out-of-plane direction and one side in the in-plane direction of each core material 11 of this skeleton, respectively. An inwardly facing glass mounting recess 19 is formed on a side portion, and a decorative material 20 is mounted on the outer surface of each of the refractory plates 17 and 15 to form a framework 4, and the glass mounting recess 19 of the framework 4 is extended. Glass 5 is attached, and the expansion joint 30 is made slidable along the other core member 11 with the connecting member 31 fixed to one core member 11, and the other long hole in the longitudinal direction of the core member 11. The screw 33 is screwed onto the connecting member 31 from 32, and the head 33a of the screw 33 Square fire door, characterized in that the washer 34 has assumed interposed from low melt material between the core material 11.