JP6385661B2 - door - Google Patents

Description

  The present invention relates to a door including a parent door and a child door.

  A conventional parent-child door is provided with a tight material (for example, see Patent Document 1) made of a soft resin on a smoke return provided on the indoor side of a door-end portion of the child door, and the tight material is brought into contact with the parent door so as to be airtight. And water tightness is ensured. In the event of a fire, the tight material melts and disappears, and there is a risk that flames and smoke communicate from the butt portion of the parent door and the child door through the interior and exterior, leading to the spread of fire.

Japanese Patent Laid-Open No. 10-37629

  The present invention has been made in view of the circumstances described above, and an object of the present invention is to provide a door that can prevent communication of flames and smoke from a butt portion of a parent-child door during a fire and prevent fire spread.

In order to achieve the above object, a door according to the first aspect of the present invention comprises a parent door and a child door, the child door has smoke return at the door tip, and spans the smoke return finding surface and the expected surface. Reinforcing material is attached, and smoke smoke has a tight material on the face part, and the tight material consists of a soft resin fin piece that comes into contact with the parent door and a foam refractory material part that foams due to the heat of the fire The foamable refractory material part is opposed to the gap of the butting part of the parent-child door.

The door according to the first aspect of the present invention has smoke return at the door tip portion of the child door, the smoke return has a tight material at the finding surface portion, and the tight material is a soft resin fin that contacts the parent door. It has one part and a foaming refractory part that foams due to the heat of the fire, and the foaming refractory part faces the gap between the butt part of the parent and child doors. Since it foams and closes the gap of the butt portion of the parent and child door, it is possible to prevent communication of flame and smoke from the butt portion of the parent and child door and to prevent the spread of fire. The reinforcing material is installed over the face and the expected surface of the smoke return so that the reinforcement remains even if the smoke return is melted by the heat of the fire so that the foamed refractory part of the tight material hits the reinforcement. By foaming and expanding, it is possible to reliably maintain a state in which the gap between the butt portions of the parent-child door is closed.

It is a cross-sectional view which expands and shows the butting part of a parent-child door. It is AA sectional drawing of FIG. It is a room side front view showing one embodiment of a door concerning the present invention. It is a cross-sectional view of the butting part of the parent-child door at the time of a fire.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 3 show an embodiment of a door according to the present invention. This door is an entrance door, as shown in FIGS. 2 and 3, a frame 7 attached to the housing opening, and a main door 1 attached to one of the collar frames 8a so as to open to the outdoor side by a hinge 9a. The child door 2 attached to the other flange frame 8b so as to open to the outdoor side by a hinge 9b is provided. The parent door 1 includes a handle 10 on the door end side, a latch lock interlocked with the handle 10, and main locking locks 38 a and 38 b provided at two positions above and below the handle 10. The latch lock and the main locking locks 38 a and 38 b are provided. Is locked by engaging a lock receiver provided at the door tip of the child door 2. The child door 2 is locked by a French drop.

As shown in FIG. 2, the main door 1 has a metal frame 11 having a four-sided frame, and a heat insulating material 12 such as a foamed polystyrene plate is arranged in the frame, and panels 13a and 13b made of steel plates on the outdoor side and the outdoor side. The so-called flash structure is attached. The panels 13 a and 13 b are fixed to the frame 11 with rivets 14 by bending the edges of the four sides in the prospective direction.
As shown in FIG. 1, an edge member 15 made of an aluminum shape is attached to a prospective surface on the door end side of the parent door 1. The edge member 15 has a smoke return 16 on the outdoor side, and the smoke return 16 includes a look-up surface portion 16a that protrudes outward, and a look-up surface portion 16b that protrudes from the front end of the look-up surface portion 16a toward the door end side of the parent door 1. And the smoke return 16 conceals the gap 17 between the butted portions of the parent and child doors 1 and 2 from the outdoor side.
A foamable refractory material 18 that expands and expands in response to heat is provided along the longitudinal direction at a portion on the outdoor side of the expected surface of the door 1 on the door side. Such a foamable refractory material 18 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.

Similar to the parent door 1, the child door 2 has a metal frame 19 that surrounds four sides, a heat insulating material 20 such as a foamed polystyrene plate is disposed in the frame, and panels 21 a and 21 b made of steel plates on the outdoor side and the outdoor side. The so-called flash structure is attached. The panels 21 a and 21 b are fixed to the frame 19 with rivets 22 by bending the edges of the four circumferences in the prospective direction.
As shown in FIG. 1, an edge member 23 made of an aluminum shape is attached to a prospective surface on the door end side of the child door 2. The edge member 23 has a smoke return 3 on the indoor side, and the smoke return 3 includes an expected surface portion 3a that protrudes toward the indoor side, and a finding surface portion 3b that protrudes toward the door end side of the child door 2 from the tip of the expected surface portion 3a. And the smoke return 3 conceals the gap 17 between the butted portions of the parent and child doors 1 and 2 from the indoor side. A tight material holder 24 is provided on the door end side end portion of the finding surface portion 3 b toward the outdoor side, and the tight material 4 is attached to the tight material holder 24. The tight material 4 is formed by integrating a soft resin fin piece portion 5 and a foamable refractory material portion 6 that expands and expands in response to heat by two-color extrusion molding. The soft resin fin piece portion 5 is located farther from the expected surface portion 3a of the smoke return 3 than the foamable refractory material portion 6, and abuts against the door end side end portion of the indoor-side finding surface of the parent door 1. The blowing of wind and rain from the gap 17 between the butted portions of the parent and child doors 1 and 2 is prevented. The foamable refractory material portion 6 is located closer to the expected surface portion 3a of the smoke return 3 than the soft resin fin piece portion 5, and faces the gap 17 of the butted portion of the parent-child doors 1 and 2. The foamable refractory material portion 6 is provided with a hollow portion 25 to provide elasticity.

  As shown in FIG. 1, the smoke return 3 is reinforced by attaching a reinforcing material 26 made of a stainless steel plate. The reinforcing material 26 is composed of a main reinforcing material 26a disposed outside the smoke flare 3 (inside the room) and a secondary reinforcing material 26b disposed inside the smoke flue 3 (outside the room), and both the reinforcing materials 26a and 26b are A rivet 27 is attached so as to sandwich the expected surface portion 3 a of the smoke return 3. The main reinforcing member 26 a is engaged with a groove 28 formed at the base portion of the prospective surface portion 3 a of the smoke return 3, and the indoor side end portion extends to the indoor side of the tight material holder 24. The secondary reinforcing material 26b is shorter than the main reinforcing material 26a in both the expected direction and the finding direction. The smoke return 3 is covered with a resin cover material 29 engaged and attached from the indoor side.

Foamed refractory materials 30 and 31 are longitudinally sandwiched between the edge members 15 and 23 and the folded portions of the panels 13b and 21b at the indoor side end portions of the door side expected surfaces of the parent door 1 and the child door 2. It is provided along the direction.
In addition, a foamable refractory material 32 is also provided along the longitudinal direction at the outdoor side end portion of the door side expected surface of the child door 2. The foamable refractory material 32 is provided to face the foamable refractory material 18 on the expected side of the door 1.

  As shown in FIG. 2, the frame 7 has a tight material holder 33 projecting toward the inner peripheral side on the indoor side of the expected surface on the inner peripheral side, and the tight material 34 is provided on the tight material holder 33 toward the outdoor side. It is. The tight material 34 of this frame has a soft resin fin piece portion 35 and a foamable refractory material portion 36, similar to the smoke material 3 of the smoke return 3, and the soft resin fin piece portion 35 is the main door 1. The foamable refractory material part 36 faces the gap 37 between the main door 1 and the child door 2 and the frame 7.

FIG. 4 shows a state of the butt portion of the parent and child doors 1 and 2 during a fire. As shown in the figure, when a fire breaks out, the foamable refractory material portion 6 of the tight material 4 attached to the smoke return 3 of the child door 2 expands and expands due to the heat of the fire, and the butt portion of the parent-child doors 1 and 2 The gap 17 is closed from the indoor side, and the foamable refractory materials 18 and 32 attached to the exterior side of the door-side expected surface of the parent and child doors 1 and 2 are expanded and expanded by the heat of the fire, so that the butt portion of the parent and child doors 1 and 2 The gap 17 is closed from the outdoor side. Thereby, the communication of the flame and smoke from the butt | matching part of the parent-child doors 1 and 2 can be prevented, and a fire spread can be prevented.
Since the smoke return 3 of the child door 2 is reinforced with the reinforcing material 26, the reinforcing material 26 remains even if the smoke return 3 is melted by the heat of the fire, and the foamable refractory material portion 6 of the tight material 4 becomes the reinforcing material 26. By foaming and expanding so as to hit, it is possible to reliably maintain a state where the gap 17 of the butted portion of the parent-child doors 1 and 2 is closed.
Moreover, since the foaming refractory materials 18 and 32 are provided opposite to the expected surfaces of the parent door 1 and the child door 2, the parent door 1 is warped and the upper and lower portions on the door side move in the expected direction. Even so, the space between the prospective surfaces of the parent-child doors 1 and 2 can be closed tightly with the foamable refractory materials 18 and 32.
Further, the foaming refractory materials 30 and 31 provided between the edge members 15 and 23 and the panels 13b and 21b in the parent door 1 and the child door 2 are expanded and expanded, so that the door lock and the lock holder can be used. It is possible to prevent smoke flowing into the indoor side through the gap between the functional parts and combustible gas generated from the heat insulating materials 12 and 20 inside the door from communicating with the indoor side.
Further, the foamable refractory material portion 36 of the tight material 34 of the frame 7 expands and expands to close the gap 37 between the periphery of the parent-child doors 1 and 2 and the frame 7, and the periphery of the parent-child doors 1 and 2 and the frame 7. It is also possible to prevent flames and smoke from passing through.

  The present invention is not limited to the embodiments described above. The material and shape of the soft resin fin piece 5 and the foamable refractory material 6 of the tight material 4 can be appropriately changed. The structure of the parent door 1 and the child door 2 is arbitrary, and is not limited to a flash structure, and may be a structure in which a panel is fitted in a frame that is assembled, for example. The present invention is not limited to a front door, and can be applied to any door such as a door for a doorway or a door in a room.

DESCRIPTION OF SYMBOLS 1 Parent door 2 Child door 3 Smoke return 4 Tight material 5 Soft resin fin piece part 6 Foaming fireproof material part

Claims (1)

It has a main door and a child door, and the child door has smoke return at the door tip, and a reinforcing material is attached over the smoke return surface and the expected surface. The tight material has a fin portion made of soft resin that comes into contact with the main door and a foam refractory material portion that foams due to the heat of the fire, and the foam refractory material portion is in the gap between the butt portions of the parent and child doors. A door characterized by facing each other.

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