JPH0533564A - Fire proof door - Google Patents

Abstract

PURPOSE:To increase fire proof functions of the nearby position fittied with a key, by charging inorganic boards between an escutcheon plate and a door body and forming inorganic boards between the door body and the key, in a fire proof door in which the key body is buried in the wooden door body and the key body and the door knob or the key cylinder are connected to each other. CONSTITUTION:A key body 10 is buried into a wooden door body 5 and the key body 10 and a door knob 2, and the key body 10 and a key cylinder are jointed respectively. An escutcheon plate 1 is fixed so as to cover the joint of the door body 5 and the door knob 2 or the door body 10 and the key cylinder, and an inorganic board 6 is stuffed between the escutcheon plate 1 and the door body 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fireproof door for suppressing the spread of fire when a building is fired, and more particularly to a fireproof door for improving the fireproof performance near a key mounting portion embedded in the door.

[0002]

2. Description of the Related Art The phenomenon and scale of a fire depend on various conditions such as ignitability of building materials, fire transferability, amount of combustibles, thermal conductivity, opening ratio of windows and doors, and combustion conditions of fire sources. Since it is affected, various studies have been made to suppress the fire and prevent the spread of fire.

From the standpoint of human safety against fire, it is important to prevent the spread of fire and to secure an evacuation route. In particular, flames, hot air, smoke, toxic gases, etc., generated during a fire are corridors, stairs, openings, etc. An important point is how to prevent it from expanding through the building by moving through it.

Conventionally, in order to prevent the spread of fire and to block smoke, it has been practiced to install fireproof doors having an improved fireproof performance in a passageway, stairs of a building, an opening of a room, or the like. If the fireproof door is made of all metal materials, it will not burn by itself, but it tends to be shunned due to the weight of the door, attachment of hinges, door operability, decoration, etc. Wood-based fire doors are widely used in buildings such as apartments where the interior decoration and atmosphere are important.

In a fire door made of wood, one of the parts that requires structural attention in order to obtain a predetermined fire protection performance is a part to which a key is attached.

In other words, from the viewpoint of preventing the spread of fire and securing an evacuation route as described above, in addition to preventing the transmission of fire, smoke, etc. through an opening, a passage, etc., at the time of evacuation in the event of a fire, It is essential to keep the fire door open and close as usual and prevent the door from falling off due to damage.

By the way, in a fire door provided in a building, various key mounting structures have been considered in consideration of decorative factors, among which escutcheon plates mounted on the front and back surfaces of the door body. And a lock set including a grip member provided so as to project from the escutcheon plate.

[0008]

However, in the door having such a structure, the through-hole portion for incorporating the lock set into the door body in the event of a fire is formed in the door body by spreading the fire. Among them, there was a problem that it becomes the part where fire and smoke are most easily transmitted, which in turn promotes the spread of fire in the door and causes harmful deformation in evacuation during a fire.

Further, in a fireproof door made of wood, since the key body is embedded in the door body, the wood portion adjacent to the key body is inevitably thin, and the fireproof performance is higher than other portions. There was a problem that the tendency was inferior.

Further, even if the door body exhibits fireproof performance in the event of a fire, the door of the fireproof door cannot be opened or closed because it is deformed or damaged before other parts. There was a problem that evacuation would be difficult.

In order to solve the above-mentioned problems, it is an object of the present invention to provide a fireproof door having improved fireproof performance around a key attached to the fireproof door.

[0012]

In order to achieve the above object, a fireproof door of the present invention is a fireproof door in which a key body is embedded in a wooden door body, and the key body and the door grip or a key cylinder are connected. An escutcheon plate covering a joint between the door body and the door grip or the key cylinder is provided, and an inorganic plate material is filled between the escutcheon plate and the door body.

The fire door of the present invention is a fire door in which a key body is embedded in a wood-based door body, and the key body and the door grip or the key cylinder are connected to each other, between the door body and the key body. It is characterized in that an inorganic plate material is formed.

In the above structure, the inorganic plate material is a laminate comprising at least an inorganic fiber layer and a layer containing inorganic fine particles and a binder, and the inorganic fiber layer is rock wool, glass fiber, silicon carbide fiber, carbon fiber. , Silica-
Alumina fiber, silica fiber, alumina fiber, metal fiber,
It is preferable that the heat-resistant fiber is at least one selected from ceramic fibers.

[0015]

According to the structure of the present invention, the escutcheon plate for covering the joint between the door body and the door grip or the key cylinder is provided, and the inorganic plate material is filled between the escutcheon plate and the door body. Even if the fire door body is heated due to a fire, the part covered with the escutcheon plate has the heat insulating property and flame shielding property of the inorganic plate material.
Due to characteristics such as flame retardancy, it is possible to prevent fire and burnout to the non-combustion side due to damage to the key mounting part, prevent the door from falling off, and operate the key normally,
The fire door can be kept open and closed.

According to another aspect of the present invention, since the inorganic plate material is formed between the door body and the key body, even if the fireproof door body is heated due to a fire, as described above. In the part where the inorganic plate material is formed, damage to the key mounting part can be prevented due to the characteristics of the inorganic plate material such as heat insulating property, flameproof property, flame retardancy, etc. By preventing burn-out and door drop-out, the fire door can be kept open and closed as usual.

The inorganic plate material is a laminate comprising at least an inorganic fiber layer and a layer containing inorganic fine particles and a binder, and the inorganic fiber layer is rock wool, glass fiber, silicon carbide fiber, carbon fiber, silica. -By using at least one kind of heat-resistant fiber selected from alumina fiber, silica fiber, alumina fiber, metal fiber, and ceramic fiber, a fireproof door excellent in fireproof property, high in strength, lightweight, and soundproof. Can be realized.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. The present invention is not limited to the examples below.

FIG. 1 is a partial perspective view of an embodiment of the fire door of the present invention. A key body 10 having a latch bolt 11 and a lock bolt 12 is embedded in a wooden door body 5. Further, the key body 10 and the door grip 2 are connected so that the latch bolt 11 moves in and out by rotating the door grip 2. Also, by inserting the key into the key cylinder 3 and rotating it, the lock bolt 12
Key body 10 and key cylinder 3 to move in and out
Are connected.

The escutcheon plate 1 is a door body 5
The door grip 2 is fixed with a fixing member 4 such as a screw so as to cover the joint of the door grip 2 and the joint of the door body 5 and the key cylinder 3. An inorganic plate material is filled between the escutcheon plate 1 and the door body 5.

FIG. 2 is an enlarged front view of the essential parts of this embodiment.
FIG. 3 is a plan view seen from the AA ′ cross section of FIG. The key body 10 is embedded in the door body 5 so that the latch bolt 11 of the key body 10 and the receiving plate 13 fixed to the door frame are locked. Therefore, the thickness of the wood portion of the door body 5 in which the key body 10 is embedded is formed thinner than the other wood portions by the thickness of the key body 10. As shown in FIG. 3, the escutcheon plate 1 is fixed so as to cover the joint between the door body 5 and the door grip 2, and the inorganic plate material 6 is filled between the escutcheon plate 1 and the door body 5. Has been done.

The inorganic plate member 6 is formed so as to match the space shape created between the escutcheon plate 1 and the door body 5. As the material of the inorganic plate material 6, there are materials in which metals, metal oxides, ceramics, glass, minerals and the like are formed into a plate shape or a fiber shape. In particular, in terms of heat resistance, heat insulation, weight reduction of the door, etc., a laminate comprising at least an inorganic fiber layer and a layer containing inorganic fine particles and a binder,
The inorganic fiber layer is preferably at least one heat resistant fiber selected from rock wool, glass fiber, silicon carbide fiber, carbon fiber, silica-alumina fiber, silica fiber, alumina fiber, metal fiber, and ceramic fiber.

FIG. 4 is a sectional view of a preferred example of the inorganic plate member 6, FIG. 4a is an overall sectional view, and FIG. 4b is a sectional view taken along the line CC ′ of FIG. 4a. The inorganic plate material 6 has a function of blocking a high temperature fluid and a flame, and includes a heat resistant fiber layer, so that there is no fear of being broken by the pressure of the high temperature fluid. As the heat-resistant fibers constituting such an inorganic plate material 6, heat-resistant inorganic fibers having a heat resistance of 1000 ° C. or higher such as alumina fibers, silica fibers, alumina-silica fibers, and silicon carbide fibers (these are also referred to as ceramic fibers) are used. It is preferable. It should be noted that even fibers having a slightly low heat resistance such as glass fibers can be used in combination with these ceramic fibers. And particularly preferably, the inorganic plate material 6 is formed of a laminated body (hereinafter referred to as an inorganic fiber board) including at least a ceramic fiber layer and a layer containing inorganic fine particles and a binder.

The preferred ceramic fiber layer for forming the inorganic fiber board may be formed by a dry method or a wet method, such as a nonwoven fabric or a papermaking sheet, or a woven cloth or a knitted cloth. The surface of the ceramic fiber layer thus obtained is impregnated or coated with inorganic fine particles, and a binder is further coated thereon, or a composition in which inorganic fine particles and a binder are mixed is impregnated or coated, and dried or heat treated. Adhesive and integrated by such as. As the binder, silica sol, alumina sol, zirconia sol, silicate, phosphate, or silica cement, alumina cement, magnesia cement,
Examples include heat-resistant cements such as zirconia cement. Next, as the inorganic fine particles, wax, feldspar, magnesia, diatomaceous earth, silica, silica-alumina, mullite alumina, aluminum hydroxide, silicon carbide, zircon, zirconia, titanium oxide, magnesia oxide, calcium oxide, calcium silicate, Magnesium silicate, Shirasu, Shirasu balloon, glass, glass balloon, perlite, dolomite, kaolin, chamotte, mica, cordierite, silicon nitride, boron nitride, sepiolite, attapulgite, bentonite,
Hectorite, synthetic fluoromica, montmorillonite, various whiskers, carbon powder, metal powder, etc. can be illustrated.

The apparent density of the inorganic plate material 6 is 0.2 to 1.0.
About g / cm ³ is preferable, and the thickness of the inorganic plate material 6 is 1 mm
It is preferable that the range is from 3 mm to 3 mm. Next, an example of a method for manufacturing the inorganic plate material 6 will be described. Fiber diameter 2-3 μm
The silica-alumina-based ceramic fiber assembly sheet (1) is prepared by a wet papermaking method. This fiber assembly sheet is
90 g / unit weight including 2 wt% acrylic emulsion
m ² , an apparent density of 0.18 g / cm ³ , and a thickness of 0.5 mm. Three sheets of this fiber assembly sheet were prepared, and a binder having a viscosity of 1000 cps prepared by the following formulation was applied on one sheet of fiber at a dry weight of 470 g / m ² . The fiber sheet thus obtained was coated with three binders containing inorganic fine particles and laminated to form 1 sheet.
Apply a pressure of kg / cm ² to bring them into close contact, and then dry them to give a basis weight 1.
200 g / m ² , apparent density 0.7 g / cm ³ , thickness 1.7
It was formed in a plate shape of mm.

[0026]   (Blend)   Alumina powder (average particle diameter: 3 μm) 32% by weight   Silica powder (average particle diameter: 2 μm) 16% by weight   Colloidal silica (concentration 30 wt%) 39 wt%   Sepiolite 6.5% by weight   Water 6.5% by weight

FIG. 5 is a partial perspective view for explaining another embodiment of the fire door of the present invention. Latch bolt 11,
A hollow portion is formed in the wooden door body 5 so that the key body 10 having the lock bolt 12 is embedded.
An inorganic plate material 7 is formed on the surface that contacts the door body 5,
Five surfaces of the key body 10 are attached. The key body 10 on which the inorganic plate material 7 is formed in this manner is embedded in the hollow portion of the door body 5.

FIG. 6 is a plan view seen from a sectional line at the same position as the line AA 'shown in FIG. The configuration is the same as that shown in FIG. 3, except that an inorganic plate material 7 is formed between the key body 10 and the door body. Therefore, the key body 10
The thickness of the wood portion of the door main body 5 in which is embedded is formed thinner than the other wood portions by the thickness of the key main body 10 and the thickness of the two inorganic plate materials 7. Therefore, it is preferable that the thickness of the inorganic plate material 7 is as thin as possible within the limit that a predetermined fire protection performance can be obtained. For example,
The thickness of the door body 5 is 38 to 40 mm, and the key body 1
When the thickness of 0 is 22 mm, the thickness of the inorganic plate material 7 is preferably in the range of 1 mm to 3 mm.

It should be noted that, without filling the inorganic plate material 6 between the escutcheon plate 1 and the door body 5, the key body 10
By forming the inorganic plate material 7 only between the door body and the door body, it is possible to realize a predetermined fireproof performance.

As the material of the inorganic plate material 7, there is a material in which metal, metal oxide, ceramics, glass, mineral and the like are formed in a plate shape or a fibrous shape, like the inorganic plate material 6 described above.
In particular, in terms of heat resistance, heat insulation, door weight reduction, etc., it is a laminate comprising at least an inorganic fiber layer and a layer containing inorganic fine particles and a binder, wherein the inorganic fiber layer is rock wool, glass fiber, silicon carbide. Fiber, carbon fiber, silica-
Alumina fiber, silica fiber, alumina fiber, metal fiber,
It is preferable that the heat-resistant fiber is at least one selected from ceramic fibers.

FIG. 7 is a partial perspective view of another embodiment of the fire door of the present invention. In this embodiment, the key body 10 is embedded in the wooden door body 5 and the key body 10 and the door grip 2 are connected to each other as described above, but the door body 5 and the door grip 2 are connected. The difference is that the shape of the escutcheon plate 1 that covers the joint portion is formed in a donut shape. An inorganic plate material is filled between the escutcheon plate 1 and the door body 5.

As described above, various shapes of the escutcheon plate 1 can be considered from the viewpoint of function and decoration. It is said that the escutcheon plate 1 is filled with an inorganic plate material between the escutcheon plate 1 and the door body 5. The idea can be all applied to the escutcheon plate 1 having an arbitrary shape.

[0033]

As described above, the fireproof door of the present invention is provided with the escutcheon plate that covers the joint between the door body and the door grip or the key cylinder, and the inorganic plate material is provided between the escutcheon plate and the door body. Even if the fire door body is heated due to a fire due to the fact that it is filled, damage to the vicinity of the key attachment part can be prevented, and the normal operation of the key can be maintained, so it is possible to prevent fire spread and secure an evacuation route. You can

Further, in the fireproof door of the present invention, since the inorganic plate material is formed between the door body and the key body, even if the fireproof door body is heated due to a fire, as described above, Since damage to the vicinity of the key attachment portion can be prevented, the same effect as described above can be obtained.

The inorganic plate material is a laminate comprising at least an inorganic fiber layer and a layer containing inorganic fine particles and a binder, and the inorganic fiber layer is rock wool, glass fiber, silicon carbide fiber, carbon fiber, silica. -By using at least one kind of heat-resistant fiber selected from alumina fiber, silica fiber, alumina fiber, metal fiber, and ceramic fiber, it is possible to obtain a fireproof door excellent in fireproofness, strength, light weight, soundproofness and the like.

[Brief description of drawings]

FIG. 1 is a partial perspective view of an embodiment of a fire door of the present invention.

FIG. 2 is an enlarged front view of the essential parts of an embodiment of the fire door of the present invention.

FIG. 3 is a plan view seen from the AA ′ cross section of FIG. 2.

4 is a cross-sectional view of a preferred example of the inorganic plate materials 6 and 7, FIG. 4a is an overall cross-sectional view, and FIG. 4b is CC ′ of FIG. 4a.
FIG.

FIG. 5 is a partial perspective view for explaining another embodiment of the fire door of the present invention.

FIG. 6 is a plan view seen from a sectional line at the same position as the line AA ′ shown in FIG.

FIG. 7 is a partial perspective view of another embodiment of the fire door of the present invention.

[Explanation of symbols]

1, 1'Escussion plate 2 Door grip 3 Key cylinder 4 Fixing member 5 Door body 6, 7 Inorganic plate material 10 Key body 11 Latch bolt 12 Lock bolt 13 Receiving plate 14 Door frame 32, 32 'Inorganic fiber layer 33, 33 ′ Inorganic fiber, mixed layer of inorganic fine particles and inorganic adhesive 34 Binder layer

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Katsuyoshi Hayami             1128 Katsube-cho, Moriyama-shi, Shiga Japan Vilene             Within the corporation

Claims (3)

[Claims] 1. A fire door in which a key body is embedded in a wooden door body and the key body and the door grip or the key cylinder are connected to each other, and the joint portion between the door body and the door grip or the key cylinder is covered. A fireproof door comprising an escutcheon plate, wherein an inorganic plate material is filled between the escutcheon plate and the door body. 2. In a fireproof door in which a key body is embedded in a wooden door body and the key body and the door grip or the key cylinder are connected, an inorganic plate material is formed between the door body and the key body. A fire door that is characterized by: 3. An inorganic plate material is a laminate comprising at least an inorganic fiber layer and a layer containing inorganic fine particles and a binder, wherein the inorganic fiber layer is rock wool, glass fiber,
The fire door according to claim 1 or 2, which is at least one kind of heat resistant fiber selected from silicon carbide fiber, carbon fiber, silica-alumina fiber, silica fiber, alumina fiber, metal fiber, and ceramic fiber.