JP6294922B2 - door - Google Patents

Description

  The present invention relates to a door provided with a port.

  The entrance door and other doors have a mailing port for posting newspapers and postal items, but in the event of a fire, there was a risk that a flame could penetrate the port and lead to the spread of fire.

  An object of the present invention is to provide a door that can prevent a flame from penetrating through a door in the event of a fire.

In order to achieve the above object, a door according to a first aspect of the present invention comprises an opening for a posting port, a loading port reinforcing frame provided in the opening, and an openable / closable lid for closing the opening. A heat-expandable refractory material that foams toward the lower edge of the lid by heat of fire is provided outside the lower frame portion of the reinforcing frame and below the lower edge of the lid .

The door according to the first aspect of the present invention comprises an opening for a loading port, a loading port reinforcing frame provided in the opening, and an openable / closable lid for closing the opening. Since a thermally expandable refractory material that foams toward the bottom edge of the lid due to the heat of the fire is provided at a position below the lower edge of the lid on the outside, the foamed thermally expandable refractory material holds the lid in the event of a fire, It is possible to prevent the flame from penetrating the posting port. In addition, during normal use, the thermally expandable refractory material does not interfere with posting, and the thermally expandable refractory material does not fall off.

It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is the outdoor side front view of the door which concerns on 1st Embodiment of this invention. It is the figure which looked at the reinforcing material provided in the hanging origin side of a door from the hanging origin side. It is a cross-sectional view at the time of the fire of the door. It is the outdoor side front view of the door which concerns on 2nd Embodiment of this invention. It is CC sectional drawing of FIG. It is DD sectional drawing of FIG. It is a disassembled perspective view of the part of a mailing mouth. It is a longitudinal cross-sectional view of the part of the mailing slot at the time of a fire. It is a cross-sectional view of the portion of the mailing slot at the time of a fire.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1-3 has shown 1st Embodiment of the door of this invention. The door is a door for the entrance, and includes a frame 1 attached to the housing opening and a door 2 attached to the frame 1 so as to open to the outdoor side by a hinge 15. As shown in FIG. 3, the door 2 includes a vertically long rectangular lighting window 10 at the center in the left-right direction.

  The frame 1 is formed by framing an upper frame 1a, a lower frame 1b, and left and right collar frames 1c, 1d formed of an extruded shape of an aluminum alloy. As shown in FIGS. 1 and 2, the frame 1 is formed with an airtight material holder 16 projecting toward the inner peripheral side at a position closer to the indoor side of the inner peripheral side surface. The airtight member 3 is in contact with the outer peripheral edge of the indoor side surface of the door 1 and closes the gap between the frame 1 and the door 2. The airtight material 3 is preferably a nonflammable material that is resistant to the heat of a fire. For example, a material made of sintered silicon rubber or a material using a heat-foaming refractory material that expands in response to the heat of a fire is used. it can.

As shown in FIGS. 1 and 2, the door 2 includes steel plates 4 a and 4 b on the outdoor and indoor surfaces, and the door 2 is sandwiched between the outdoor and indoor steel plates 4 a and 4 b. 5 is provided between the steel plates 4a and 4b, and steel peripheral reinforcing members 6a, 6b, 6c and 6d are provided so as to surround the periphery of the core material 5. A paper honeycomb is used as the core material 5, and the core material 5 is bonded to the back surfaces of the steel plates 4a and 4b with an adhesive.
The outer periphery reinforcing members 6 a, 6 b, 6 c, and 6 d are long members having a U-shaped cross section that is open on the inner periphery side, and reinforces the outer peripheral portion of the door 2. The steel plates 4a and 4b on the front and back sides are folded back at the outer peripheral edge, abutted against the prospective surfaces of the outer peripheral reinforcing members 6a, 6b, 6c and 6d, and fixed with rivets 17. As shown in FIGS. 1 and 4, the suspension base outer peripheral reinforcing member 6 a is provided with a plurality of gas vent holes 8 (five in the drawing) at the center position of the prospective surface at intervals in the longitudinal direction.

As shown in FIG. 1, an edge member 18 is provided over the entire length of the door 2 at the edge of the door 2 on the suspending side. The edge member 18 is made of an extruded shape of an aluminum alloy, and a gap 19 communicating in the vertical direction is formed between the edge member 18 and the outer peripheral reinforcing member 6a on the suspension side. A thermally expandable refractory material 9 a that foams and expands in response to heat is provided along the longitudinal direction of the edge member 18 at a position on the indoor side of the gas vent hole 8 in the gap 19. Such a heat-expandable refractory material 9a can be appropriately selected from commercially available products, and for example, trade name “Fibrok” manufactured by Sekisui Chemical Co., Ltd. can be used. This is an organic refractory material utilizing plastic technology, and is a thin sheet in a normal state. When heated to 200 ° C. or more, it expands 5 to 40 times in the thickness direction to form a heat insulating layer. It does not disappear in the event of a fire, and no harmful gases are generated. Further, since the fibro has an adhesive layer with release paper on one side, it can be easily attached by peeling off the release paper.
An edge member 20 made of an extruded shape of an aluminum alloy is also provided at the edge of the door 2 on the door end side over the entire length of the door 2. The edge material 20 on the door end side has a smoke return 21 projecting to the outer peripheral side at the end portion on the outdoor side, and the smoke return 21 hides the gap between the frame 1d and the door 2 from the outdoor side. A thermally expandable refractory material 9 b is provided along the longitudinal direction of the edge material 20 at a position adjacent to the smoke return 21 on the prospective surface of the edge material 20.

As shown in FIGS. 1 and 2, the daylighting window 10 has openings 22a and 22b formed on the front and back steel plates 4a and 4b, and the opening reinforcement frame 7 is formed along the edges of the openings 22a and 22b. It is provided between 4b, and glass (multi-layer glass) 23 is fitted into the opening reinforcing frame 7. A molding material 24 is attached to the outdoor side surface and the indoor side surface of the door 2 so as to surround the openings 22a and 22b.
The opening reinforcing frame 7 is configured by a framework of an upper frame member 7a and a lower frame member 7b made of an extruded shape of an aluminum alloy, and left and right eaves frame members 7c, 7c, and each frame member 7a, 7b, 7c, 7c. Has a glass holding groove 25 opened on the inner peripheral side, and the edge of the glass 23 is fitted into the glass holding groove 25 via a Grechan 26. In the glass holding groove 25, a glass front reinforcing material 27 formed by bending a stainless steel plate into a U shape is provided over the entire length of the glass holding groove 25. A thermal expansion refractory material 9c is provided over the entire length of the edge of the glass face reinforcing material 27 so as to face the Grechan 26. Furthermore, a thermally expandable refractory material 9d is also provided over the entire length at the indoor side position of the prospective surface of the glass front reinforcing member 27. The opening reinforcing frame 7 and the glass front reinforcing member 27 are fixed to the front and back steel plates 4 a and 4 b by rivets 28.
Furthermore, the opening reinforcement frame 7 is provided with protrusions 29 on the outdoor side and the indoor side of the prospective surface on the outer peripheral side, and the thermally expandable refractory material 9e faces the back surfaces of the steel plates 4a and 4b over the entire length of the protrusions 29. It is provided as follows.

When a fire occurs and the door 2 is heated, combustible gas is generated from the adhesive bonding the core material 5. The combustible gas generated inside the door 2 is provided with the gas vent hole 8 in the outer periphery reinforcing member 6a on the suspension side, and therefore, as shown by an arrow 30 in FIG. Since the combustible gas exits into the gap 19 between the edge 6 and the edge material 18 and is lighter than air, it rises up through the gap 19 and exits from the upper edge to the outside of the door 2. Even if the door 2 is warped and deformed by the heat of the fire, the door 2 is restrained by the hinge frame 1c with the hinge 15 so that the door 2 is hardly deformed. 3 is maintained, the combustible gas that has escaped upward from the gap 19 between the outer peripheral reinforcing member 6a and the edge member 18 is released to the outdoor side and does not enter the indoor side. Thus, this door can prevent the combustible gas which generate | occur | produced inside the door 2 at the time of a fire from penetrating indoors and outdoors, and can prevent fire spread effectively.
Further, the door is provided with an edge member 18 along the outer peripheral reinforcing member 6a on the suspending side, and a gap 19 communicated vertically between the edge member 18 and the outer peripheral reinforcing member 6a is provided. Since the combustible gas that has escaped from the air escapes upward through the gap 19, the effect of preventing the spread of fire is high. Furthermore, since the vent hole 8 is hidden by the edge material 18, the design is improved.
Further, since the thermally expandable refractory material 9a is provided on the indoor side of the gap 19 between the edge material 18 and the outer peripheral reinforcing material 6a, the foamed thermally expandable refractory material 9a is edged even if the edge material 18 is deformed in the event of a fire. Since the gap between the material 18 and the outer peripheral reinforcing material 6a is closed, it is possible to prevent the combustible gas from leaking into the indoor side from between the edge material 18 and the outer peripheral reinforcing material 6a.

Furthermore, this door is provided with a thermally expandable refractory material 9e facing the back surface of the steel plates 4a and 4b in the opening reinforcement frame 7 arranged around the openings 22a and 22b of the door 2, as shown in FIG. In addition, in the event of a fire, the thermally expandable refractory material 9e foams and expands to close the gap between the steel plates 4a and 4b, so that the combustible gas generated inside the door 2 flows from the openings 22a and 22b to the indoor side and the indoor side. It can prevent spouting.
Further, the thermally expandable refractory materials 9c and 9d are provided in the glass holding groove 25 of the opening reinforcing member 7, and in the event of a fire, the thermally expandable refractory materials 9c and 9d are foamed and expanded to cause the glass holding groove 25 and the glass to expand. Since the gap with 23 is closed, it is possible to prevent a flame, smoke, or the like from penetrating from the periphery of the glass 23 to the outside of the room. Further, since the glass front opening reinforcing material 27 made of stainless steel is provided in the glass holding groove 25, it is possible to prevent the glass 23 from dropping even if the outdoor side wall or the indoor side wall of the glass holding groove 25 is melted by the heat of the fire. can do.
In addition, since the edge material 20 is attached to the door tip side of the door 2 and the thermal expansion refractory material 9b is provided on the prospective surface of the edge material 20, the door 2 is warped by heat in the event of a fire. As shown in FIG. 5, since the thermally expandable refractory material 9b foams and closes the gap between the door toe part and the frame 1d, even if the gap between the part and the frame 1d spreads, It is possible to prevent a flame, smoke, or the like from entering between the eaves frame 1d.

  6-8 has shown 2nd Embodiment of the door of this invention. This door is also a door for the entrance, and the door 2 is provided with a posting port 11 for posting mails, newspapers and the like. The basic structure of the door is the same as that of the first embodiment, and the structure around the posting port 11 will be described below.

  As shown in FIGS. 7 and 8, the loading port 11 is formed with openings 31a and 31b in the front and back steel plates 4a and 4b, and the loading port reinforcing frame 12 is attached to the steel plates 4a and 4b along the edges of the openings 31a and 31b. 4b is provided. An openable / closable lid 32 is attached to the opening 31a of the outdoor steel plate 4a. The lid 32 is provided so as to be opened indoors by a horizontal shaft 33, and is biased by a torsion spring 34 so as to close the opening 31a from the inside. The opening 31 is attached to the opening 31b of the steel plate 4b on the indoor side so as to surround the inner peripheral side of the opening reinforcing frame 12. Further, a receiving box 35 for receiving a newspaper or the like posted from the posting port 11 is attached to the indoor side surface of the door 2.

  The posting port reinforcing frame 12 is formed of a plate made of steel or stainless steel, and includes an upper frame portion 12a, a lower frame portion 12b, and left and right eaves frame portions 12c and 12c, as shown in FIGS. The upper frame portion 12a is a member having a U-shaped cross section that is open on the lower side, and both end portions of the upper frame portion 12a are fixed to the outer peripheral reinforcing members 6a and 6b on the hanging side and the door tip side of the door 2. As shown in FIG. 9, the lower frame portion 12b and the left and right collar frame portions 12c, 12c are integrally provided in a U shape, and are connected to the upper frame portion 12a with screws 36. As shown in FIG. 7, the lower frame portion 12 b has a horizontal outdoor side finding surface portion 37 on the outdoor side, and has an inclined surface portion 38 that is continuously inclined downward on the indoor side of the outdoor side finding surface portion 37. Yes. A thermally expandable refractory material 9f is provided at the entire length of the outdoor side finding surface portion 37 at the outdoor side position.

The posting port cover material 13 is formed of a stainless steel plate, and is divided into an upper cover material 13a, lateral cover materials 13b and 13b, and a lower cover material 13c as shown in FIGS. As shown in FIG. 7, the upper cover member 13 a includes a finding surface portion 40 that is fixed to the indoor side surface of the door 2 with screws 39, and an indoor side expecting surface portion 41 that extends horizontally from the lower edge of the finding surface portion 40 to the outdoor side. And an inclined surface portion 42 that is inclined to the outer peripheral side on the outdoor side, and a thermally expandable refractory material 9 g is provided on the inner peripheral side surface (lower surface) of the inclined surface portion 42.
As shown in FIG. 8, the horizontal cover member 13 b includes a finding surface portion 40 that is fixed to the indoor side surface of the door 2 with screws 39, as with the upper cover member 13 a, and an outdoor side from the inner peripheral side edge of the finding surface portion 40. A room-side expected surface part 41 extending to the outside and an inclined surface part 42 extending toward the outer peripheral side on the outside of the room are provided, and a thermally expandable refractory material 9 h is provided on the inner peripheral side surface of the inclined surface part 42.
As shown in FIG. 7, the lower cover member 13 c is formed from the finding surface portion 40, the inclined surface portion 43 extending along the inclined surface portion 38 of the lower frame portion 12 b from the upper edge of the finding surface portion 40, and the tip of the inclined surface portion 43. It has a prospecting surface portion 44 that extends to the outdoor side and faces the outdoor appearance surface portion 37 of the lower frame portion 12 b, and the finding surface portion 40 and the inclined surface portion 43 are fixed with screws 39. The leading end portion of the prospective surface portion 44 overlaps the thermally expandable refractory material 9f.

  As described above, the expansion port 11 is thermally expanded into the upper cover member 13a, the lateral cover members 13b and 13b, and the lower frame portion 12b so as to surround the periphery of the opening 31a of the outdoor steel plate 4a. Refractory materials 9f, 9g, 9h are provided, respectively. When a fire occurs, as shown in FIGS. 10 and 11, these thermally expandable refractory materials 9f, 9g, and 9h are foamed and expanded by the heat of the fire, so that the opening 31a can be pressed so as to hold the lid 32 from the indoor side. Block the surroundings. Thereby, it is possible to reliably prevent the flame from penetrating through the posting port 11, and thus it is possible to prevent the spread of fire from the posting port 11.

The upper thermal expansion refractory material 9g and the lateral thermal expansion refractory material 9h are formed on the inclined surface portion 42 provided on the outer side of the indoor side expected surface portion 41 of the upper cover material 13a and the horizontal cover material 13b so as to be inclined to the outer peripheral side. Since it is provided, the thermally expandable refractory materials 9g and 9h cannot be seen even when looking into the posting port 11 from the indoor side. Further, the heat-expandable refractory materials 9g and 9h do not interfere with the posting of the newspaper or the like to the loading port 11, and the newspaper or the like hits the heat-expandable refractory materials 9g and 9h, and the heat-expandable refractory materials 9g and 9h drop off. There is nothing.
The lower thermal expansion refractory material 9f is provided on the outdoor side expected surface portion 37 of the lower frame portion 12b, and the lower cover material 13c is provided so as to hide the thermal expansion refractory material 9f from the indoor side. Even if the entrance 11 is looked into from the indoor side, the heat-expandable refractory material 9f cannot be seen. Further, the heat-expandable refractory material 9f does not get in the way of posting a newspaper or the like to the loading port 11, and the newspaper or the like hits the heat-expandable refractory material 9f, and the heat-expandable refractory material 9f does not fall off. A newspaper or the like that has been posted to the posting slot 11 slides on the lower cover member 13 c and falls into the receiving box 35.

  The present invention is not limited to the embodiments described above. The material of the core material 5 is arbitrary, for example, what was formed with resin, such as a polystyrene foam. The materials of the panels 4a and 4b and the reinforcing members 6, 7, and 12 are preferably metals having fire resistance, but are not particularly limited. The position, size and shape of the gas vent holes 8 and the number of the gas vent holes 8 can be appropriately changed. The airtight material 3 only needs to be provided at a position shifted in the expected direction with respect to the gas vent hole 8, and the position where the airtight material 3 is provided can be changed as appropriate. It is more preferable that the combustible gas that has escaped from the gas vent hole 8 is released to the outside of the room and does not enter the room. The material and shape of the airtight material 3 are not particularly limited. The present invention can be applied to any door provided with a mailing slot, and the door structure and mounting state are not limited. For example, the door is not limited to a flash door in which a core material is sandwiched between front and back steel plates, but has a structure in which a cage made of extruded aluminum alloy material is assembled on four sides and a glass panel is fitted inside But you can. Further, the door may be a door provided with a door in the child door of the parent / child door, a door fitted in a frame and fixed in a killing manner, a sliding door or the like.

1 Frame 2 House 3 Airtight material 4a, 4b Steel plate (panel)
5 Core 6a, 6b, 6c, 6d Peripheral reinforcement (reinforcement)
7 Opening frame (reinforcing material)
8 Degassing holes 9a, 9b, 9c, 9d, 9e, 9f, 9g, 9h Thermally expandable refractory material 10 Lighting window 11 Loading port 12 Loading port reinforcing frame (reinforcing material, mounting material)
13 Posting cover material (mounting material)

Claims (1)

It has an opening for the opening, a reinforcing frame for the opening provided in the opening, and an openable / closable lid that closes the opening. The door is provided with a thermally expandable fireproof material that foams toward the lower edge of the lid due to the heat of the fire.

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