JPH0842261A - Fire door - Google Patents

Abstract

PURPOSE:To prevent falling of a glass plate from a door body at the time of a fire, and hinder surely intrusion of water such as rainwater. CONSTITUTION:An inserting groove 3 is formed to the inner circumferential surface of an opening section 2 formed to a door body made of a metal while flame-retardant internal beads 4 are formed at edge sections on both sides of the inserting groove 3. A glass plate 5 is disposed into the opening section 2 while the peripheral end section of the glass plate 5 is inserted into the inserting groove 3, and each internal bead 4 is brought into contact elastically with the surfaces of the glass plate 5 respectively, thus holding the glass plate 5. Casing materials 6 projected to the opening section 2 side are mounted at the edge section of the opening section 2 while external beads 7 formed at front ends on the opening section 2 side of the casing materials 6 are brought into contact elastically with the surfaces of the glass plate 5. The glass plate 5 can be held to the door body by the flame-retardant internal beads 4 not bunt and melted by a flame and a high temperature. Double waterproof structure can be formed by both the internal beads 4 and the external beads 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire door for preventing the spread of fire when a fire occurs.

[0002]

2. Description of the Related Art Conventionally, fire doors have been provided at entrances and entrances to prevent the spread of fire in the event of a fire. In Japanese Utility Model Laid-Open No. 62-71282, a fire door is provided with a glass window. Something like that is proposed. FIG. 3 shows an example thereof. When the opening 2 that opens to the front and back is formed in the door main body 1 made of steel, the glass plate fixing ridge 40 is provided on the inner peripheral surface of the opening 2, and the glass plate fixing ridge 40 is formed. A recess 41 that opens into the opening 2 is formed in the opening 40, the glass plate 5 is fitted into the opening 2, and the peripheral end of the glass plate 5 is inserted into the recess 41, and the beads 42 are formed on both side surfaces inside the recess 41. And each bead 42 is elastically contacted with the surface of the glass plate 5 to sandwich the glass plate 5 between the beads 42 and fix the glass plate 5 to the door main body 1 to cover the glass plate-fixing rim 40. A fire door is formed by attaching 6. The reason for using aluminum as the frame material 6 is that aluminum can be easily processed into various shapes.

[0003]

However, since the frame member 6 is formed of aluminum having low heat resistance in the above-described conventional fire door, the bead 42 covered with the frame member 6 is burned by a flame or high temperature during a fire. There is a problem that the glass plate 5 cannot be held due to melting or melting, and thus the glass plate 5 comes off the door body 1 and falls. In the conventional fire door, one bead 4
Since only 2 is used for waterproofing, there is a problem that it is not possible to sufficiently prevent entry of water such as rainwater.

The present invention has been made in view of the above points, and it is possible to prevent the glass plate from falling from the door body in the event of a fire, and moreover, it is possible to reliably prevent the intrusion of water such as rainwater. The purpose is to provide a fire door.

[0005]

A fire door according to the present invention comprises:
The insertion groove 3 is formed in the inner peripheral surface of the opening 2 provided in the metal door body 1.
And the inner side of the insertion groove 3 is provided with flame-retardant inner beads 4, the glass plate 5 is disposed in the opening 2, and the peripheral end of the glass plate 5 is inserted into the insertion groove 3 to form the glass. The inner beads 4 are elastically contacted with the surface of the plate 5 to hold the glass plate 5 on the door body 1, and the opening 2 is provided at the edge of the opening 2.
It is characterized in that a frame material 6 protruding to the side is provided and an outer bead 7 provided at the tip of the frame material 6 on the side of the opening 2 is elastically contacted with the surface of the glass plate 5.

In the present invention, a concave step portion 8 is formed on the inner peripheral surface of the opening portion 2 provided in the door main body 1 so as to open inside the opening portion 2 and one surface of the door main body 1, and the concave step portion 8 is formed. The fixing member 9 arranged so as to face the inner side surface 11 of the concave step portion 8 is fixed to the bottom surface 12 of the concave step portion 8 with the screw 10 and is erected. Can be formed as the insertion groove 3.

[0007]

Operation: The insertion groove 3 is formed on the inner peripheral surface of the opening 2 provided in the metal door body 1, and the flame-retardant inner beads 4 are provided at the edges on both sides of the insertion groove 3 so that the opening 2 is provided in the opening 2. Since the glass plate 5 is disposed, the peripheral end portion of the glass plate 5 is inserted into the insertion groove 3, and the inner beads 4 are elastically contacted with the surface of the glass plate 5 to hold the glass plate 5 on the door body 1. Flame-retardant inner bead 4 that does not burn or melt in flames or high temperatures
Thus, the glass plate 5 can be held on the door body 1. Further, since the frame material 6 protruding toward the opening 2 side is provided at the edge of the opening 2 and the outer bead 7 provided at the tip of the frame material 6 on the opening 2 side is elastically contacted with the surface of the glass plate 5, A double waterproof structure can be formed by both the inner bead 4 and the outer bead 7.

[0008]

EXAMPLES The present invention will be described in detail below with reference to examples. The door body 1 is formed by attaching steel surface plates 16 to both surfaces of an outer frame 15 made of steel and having a substantially U-shaped cross section, and an opening portion that opens to both surfaces in the substantially central portion of the door body 1. Two
Is provided. As shown in FIG. 1, an inner frame 17 made of steel is provided over the entire length of the opening 2 between the end portions of the surface plates 16, 16 on the opening 2 side. The inner peripheral surface of the opening 2 is formed by the outer surface of the. On the outer surface of the inner frame 17, a recessed step portion 8 is formed which is open to the opening 2 side and the indoor surface plate 16 of the door body 1.

A fixing member 9 having a U-shaped cross section is fixed to the bottom surface 12 of the concave step portion 8 with a screw 10. The fixing member 9 is composed of a fixing piece 19 and a mounting piece 20 formed from the connecting piece 18 to have an L-shaped cross section, and a projecting piece 21 and a projecting body 23 formed from the coupling piece 22 to have an L-shaped cross section. Body 2
The fixing piece 19 of 0 is fixed to the bottom surface 12 of the concave step portion 8 with the screw 10, and the protruding piece 21 of the projecting body 23 is attached to the inner side surface 1 of the concave step portion 8.
1, the fixing member 9 is arranged so as to face the inner side surface 11 of the recessed step portion 8 by connecting the connecting piece 18 of the mounting body 20 and the connecting piece 22 of the protruding body 23 with the screw 24. The insertion groove 3 is formed between the inner side surface 11 of the concave step portion 8 and the tip of the protruding piece 21 of the fixing member 9.

By thus forming the fixing member 9 and the inner frame 17 separately, the mounting position of the fixing member 9 is changed, or the fixing member 9 is replaced to change the protruding length of the protruding piece 21. The width dimension of the insertion groove 3 can be changed according to the thickness of the glass plate 5 which will be described later, and one type of door body 1 can cope with the glass plates 5 having various types of width dimensions.

At the opening 2 of the door body 1, a glass plate 5 made of a meshed glass plate having a wire mesh inside is arranged. The glass plate 5 has its peripheral end portion inserted into the insertion groove 3 and is provided on the inner side surface 11 of the concave step portion 8 which is the edge portion of the insertion groove 3 and the tip of the protruding piece 21 of the fixing member 9. The bead 4 is elastically contacted with each surface of the glass plate 5, and the glass plate 5 is sandwiched between the inner beads 4 to be held by the door body 1. The inner bead 4 is formed to have a substantially semicircular cross section, and its arcuate surface has the side surface 1 of the concave step portion 8.
1 or elastically attached to the tip of the projecting piece 21 of the fixing member 9, and a notch groove 4a having a semicircular cross section is provided on the surface elastically contacting the glass plate 5. This inner bead 4
Is made of a flame-retardant material and does not burn or melt in a flame or high temperature.

At the opening edge of the opening 2, a locking member 25 having a U-shaped cross section that opens outward is provided on each of the surface plate 16 on the outdoor side of the door body 1 and the indoor side surface of the fixing member 9. The projections 28 are provided at the tips of the locking pieces 27 on both sides of the locking member 25. A frame material 6 is provided on the opening edge of the opening 2. The frame material 6 is made of aluminum, and the front end is the door body 1 as shown in FIG.
Legs 29 that are in contact with the surface plate 16, a surface portion 30 that extends substantially perpendicularly to the leg portions 29, and an inclination that extends from the end of the surface portion 30 toward the glass plate 5 side. The part 31 and the cover piece 32 provided at the end of the inclined portion 31 so as to protrude toward the glass plate 5 side, and the engagement piece 33 protruding from the back surface of the leg portion 29 and the back surface of the inclined portion 31. By elastically locking the tip end to the projection 28 of the locking piece 27 of the locking member 25, the frame member 6 is covered with the locking member 25 so as to cover the edge of the opening 2 of the door body 1. 1 can be attached. At the tip of the cover piece 32 of the frame member 6, there is provided a recess 34 that opens toward the glass plate 5, and the outer bead 7 is fitted in this recess 34. The tip of the outer bead 7 is elastically contacted with the surface of the glass plate 5 to form a fire door as shown in FIG.

In this fireproof door, since the glass plate 5 is attached to the opening 2 of the door body 1 by using the flame-retardant inner bead 4, even if the frame member 6 made of aluminum having low heat resistance is used, the flame does not occur. It is possible to prevent the inner bead 4 from being burnt or melted at a high temperature, and thus to prevent the inner bead 4 from retaining the glass plate 5 even if a fire occurs. Inner bead 4 and outer bead 7
Since both of them are elastically contacted with the glass plate 5, it is waterproof with double beads, and it is possible to prevent water such as rainwater from entering from the interface between the glass plate 5 and the door body 1.

[0014]

As described above, according to the present invention, the insertion groove is formed in the inner peripheral surface of the opening provided in the metal door body, and the flame-retardant inner beads are provided at the edges on both sides of the insertion groove. , The glass plate is placed in the opening, the peripheral edge of the glass plate is inserted into the insertion groove, and the inner beads are elastically contacted with the surface of the glass plate to hold the glass plate on the door body, so that the flame or high temperature The glass plate can be held on the door body with a flame-retardant inner bead that does not burn or melt at the door body, and the glass plate can be prevented from falling from the door body in the event of a fire. Further, since a frame material protruding toward the opening is provided at the edge of the opening and the outer bead provided at the tip of the opening of the frame is elastically contacted with the surface of the glass plate, both the inner bead and the outer bead are It is possible to form a double waterproof structure and reliably prevent the intrusion of water such as rainwater.

Further, a concave step portion is formed on the inner peripheral surface of the opening provided in the door body, the concave step portion being open in the opening and on one surface of the door body.
A fixing member, which is arranged so as to face the inner side surface of the concave step portion, is fixed to the bottom surface of the concave step portion by a screw so as to stand upright, and an insertion groove is formed between the inner side surface of the concave step portion and the fixing member Therefore, by changing the mounting position of the fixing member or replacing the fixing member with another type, the width dimension of the insertion groove can be changed according to the thickness of the glass plate. It can be applied to glass plates having various width dimensions.

[Brief description of drawings]

FIG. 1 is a partial sectional view showing an embodiment of the present invention.

FIG. 2 is a front view showing the above fire door.

FIG. 3 is a partial cross-sectional view showing a conventional example.

[Explanation of symbols]

 1 Door Main Body 2 Opening Part 3 Insertion Groove 4 Inner Bead 5 Glass Plate 6 Frame Material 7 Outer Bead 8 Recessed Step 9 Fixing Member 10 Screw 11 Side 12 Bottom

Claims (2)

[Claims] 1. An insertion groove is formed in an inner peripheral surface of an opening provided in a metal door body, flame-retardant inner beads are provided at edges on both sides of the insertion groove, and a glass plate is arranged in the opening. The glass plate is inserted and the peripheral edge of the glass plate is inserted into the insertion groove, the inner beads are elastically contacted with the surface of the glass plate to hold the glass plate on the door body, and the edge of the opening projects toward the opening. A fire door characterized in that a frame material is provided and an outer bead provided at the front end on the opening side of the frame material is elastically contacted with the surface of a glass plate. 2. A recessed step portion is formed on the inner peripheral surface of the opening provided in the door body so as to open in the opening and one surface of the door body, and the recessed step portion is disposed so as to face the inner side surface of the recessed step portion. 2. The fixing member according to claim 1, which is fixed to the bottom surface of the recessed step portion by a screw so as to stand upright, and is formed as an insertion groove between the inner side surface of the recessed step portion and the fixing member. Fire door.