JP2020159117A - Fire door - Google Patents

Abstract

To provide a fire door capable of enhancing fire prevention performance.SOLUTION: A fire door 1 includes a fire-resistant first outside projection 101 provided in a first gap G1 formed between a frame 10 and a first opening/closing body 20, and a fire-resistant second outside projection 102 that is so provided in the first gap G1 as to be spaced away from the first outside projection 101 by a first outside gap. In the case where a fire occurs around the fire door 1 in a fully closed state, the fire can be prevented from spreading from one side to the other side in the prospective direction of the fire door 1 through the first gap G1 by arranging the first outside projection 101 and the second outside projection 102 facing each other so that the first outside projection 101 and the second outside projection 102 overlap each other when viewed from the first gap direction.SELECTED DRAWING: Figure 2

Description

The present invention relates to a fire door.

Conventionally, a technique for improving the fire prevention performance of a door provided at an opening of a building has been proposed. In such a technique, a metal surface material forming the outdoor side surface portion and the indoor side surface portion of the door body, an aggregate provided between the metal surface materials, and heat foaming provided on the inner side surface of the metal surface material. A heat shield door provided with a sheet is disclosed (see, for example, Patent Document 1). Further, the door body and the frame body are provided so that a gap is generated between the door body and the frame body in a state where the opening of the building is fully closed by the door body.

Japanese Unexamined Patent Publication No. 2011-196083

Here, in the conventional fire door, as described above, the door body and the frame body are provided so that a gap is formed between the door body and the frame body in the fully closed state. For example, when a fire breaks out on one side of the fire door in the expected direction, the flame of the fire may flow into the other side of the fire door in the expected direction through the gap and spread the fire. There was room for improvement from the perspective of increasing the number of people.

The present invention is for solving the above-mentioned problems in the prior art, and an object of the present invention is to provide a fire door capable of enhancing fire prevention performance.

In order to solve the above-mentioned problems and achieve the object, the fire door according to claim 1 is a fire door provided at an opening of a building, and has a frame provided on the periphery of the opening and a frame. A fire door having at least one opening / closing body for opening / closing the opening, and having a fire resistance first provided in a gap formed between the frame body and the opening / closing body. The first protruding portion, which is a protruding portion and protrudes from either one of the frame body or the opening / closing body toward the other so as not to come into contact with the other, and the first protruding portion and the first interval in the gap. A fire-resistant second projecting portion provided with a gap between the two, and a second projecting portion projecting from either the frame body or the opening / closing body toward one side so as not to come into contact with the other. The first protruding portion and the second protruding portion overlap each other when viewed from the gap direction, which is the direction from either the inlet side end portion or the outlet side end portion of the gap toward the other. By arranging the first protruding portion and the second protruding portion so as to face each other, when a fire breaks out in the vicinity of the fire door in a fully closed state in which the opening is fully closed by the opening / closing body. It is possible to suppress the spread of the fire from one side to the other side in the expected direction of the fire door through the gap.

The fire door according to claim 2 is a fire door provided in an opening of a building, and is a fire door provided with a plurality of opening / closing bodies for opening / closing the opening, and is between the opening / closing bodies. A fire-resistant first protruding portion provided in the formed gap, the first protruding portion protruding from one of the opening / closing bodies toward the other so as not to come into contact with the other, and the said. It is a fire-resistant second protruding portion provided in the gap so as to be separated from the first protruding portion by a first interval, and protrudes from any one of the opening / closing bodies toward one so as not to come into contact with the other. The first protruding portion and the second protruding portion are provided, and the first protruding portion and the second protruding portion are provided, and are viewed from the gap direction, which is the direction from either the inlet side end portion or the outlet side end portion of the gap toward the other. By arranging the first protruding portion and the second protruding portion so as to overlap each other so as to overlap the protruding portions, the fire prevention is performed in a fully closed state in which the openings are fully closed by the plurality of opening / closing bodies. When a fire breaks out around the door, it is possible to prevent the fire from spreading from one side to the other side in the expected direction of the fire door through the gap.

The fire door according to claim 3 is the fire door according to claim 2, and the fire door includes a double door hinged door or a door with a child door.

The fire door according to claim 4 is an airtight means provided in the gap in the fire door according to any one of claims 1 to 3, and the opening / closing body or the frame in the fully closed state. An airtight means for increasing the airtightness of the gap by being in close contact with the body is provided, and the first protruding portion and the second protruding portion are positioned on one side and the other side in the gap direction with respect to the airtight means. One or more were placed at each position.

The fire door according to claim 5 includes a first recess for accommodating the airtight means in the fire door according to claim 4, and the side wall portion of the first recess is formed by the first protrusion or the first protrusion. It was formed as one of the second protrusions.

The fire door according to claim 6 includes the first concave portion and the second concave portion provided so as to cover the airtight means in the fire door according to claim 5, and the side wall portion of the second concave portion is formed. It was formed as either the first protrusion or the second protrusion.

The fire door according to claim 7 is a heat-expanding fire-resistant member provided in the gap in the fire door according to any one of claims 4 to 6, and the fire door is in a fully closed state. When a fire breaks out in the vicinity, the thermal expansion refractory member expands due to the heat of the fire, so that the thermal expansion refractory member is provided for closing the gap, and the thermal expansion refractory member is more than the airtight means. It was arranged at one side position or the other side position in the gap direction.

The fire door according to claim 8 is the fire door according to claim 7, wherein the thermal expansion fireproof member is used with the airtight means at a position on one side and a position on the other side in the gap direction with respect to the airtight means. They were placed at a second interval.

The fire door according to claim 9 has the width of the first interval shorter than the width of the gap in the fire door according to any one of claims 1 to 8.

The fire door according to claim 10 is the fire door according to any one of claims 1 to 9, wherein the frame body or the opening / closing body is the first protruding portion or the second protruding portion and the third. It is a fire-resistant overlapping portion provided at intervals, and has an overlapping portion formed so as to overlap the first protruding portion or the second protruding portion when viewed from the gap direction, and the third The width of the gap was made shorter than the width of the gap.

According to the fireproof door according to claim 1, it is a fire-resistant first protrusion provided in a gap formed between the frame body and the opening / closing body, and is either the frame body or the opening / closing body. It is a first protruding portion that protrudes from one side toward the other so as not to come into contact with the other, and a fire-resistant second protruding portion that is provided in a gap with a first protrusion and a first gap. A second protruding portion is provided so as to project from either the frame or the opening / closing body toward one so as not to come into contact with the other, and the first protruding portion and the second protruding portion overlap when viewed from the gap direction. By arranging the first protruding portion and the second protruding portion so as to face each other, when a fire breaks out in the vicinity of the fire prevention door in a fully closed state in which the opening is fully closed by the opening / closing body. Since it is possible to suppress the spread of the fire from one side to the other side in the expected direction of the fire prevention door through the gap, the first protruding portion and the second protruding portion have an interlaced structure. The first protruding portion and the second protruding portion can prevent the fire from spreading from one side to the other side in the expected direction of the fire prevention door, and can improve the fire prevention performance of the fire prevention door. Further, as compared with the case where the thermal expansion fireproof member is provided, the fire door can be manufactured at a low cost, the labor for assembling the fire door can be reduced, and the manufacturability of the fire door can be improved.

According to the fireproof door according to claim 2, it is a fire-resistant first protrusion provided in a gap formed between the opening / closing bodies, and the opening / closing bodies are directed from one of the opening / closing bodies to the other. A first projecting portion that is projected so as not to come into contact with the other, and a fire-resistant second projecting portion that is provided in the gap at a distance from the first projecting portion. The first protrusion is provided with a second protrusion protruding from the other toward one so as not to come into contact with the other, and the first protrusion and the second protrusion overlap when viewed from the gap direction. By arranging the portions and the second protruding portions so as to face each other, when a fire occurs around the fireproof door in the fully closed state, one side to the other side in the expected direction of the fireproof door is passed through the gap. Since it is possible to suppress the spread of the fire toward the fire, the first protrusion and the second protrusion have an interlaced structure. Therefore, the first protrusion and the second protrusion make it possible to prevent the fire door from spreading. It is possible to suppress the spread of the fire from one side to the other side, and it is possible to improve the fire prevention performance of the fire prevention door. Further, as compared with the case where the thermal expansion fireproof member is provided, the fire door can be manufactured at a low cost, the labor for assembling the fire door can be reduced, and the manufacturability of the fire door can be improved.

According to the fire door according to claim 3, since the fire door includes a double-opening hinged door or a door with a child door, the double-opening hinged door or the door with a child door is seen from one side to the other. It is possible to suppress the spread of the fire toward the side, and it is possible to improve the fire prevention performance of the double door type hinged door or the door with a child door.

According to the fire door according to claim 4, one or more first protrusions and second protrusions are arranged at one position and the other side in the gap direction with respect to the airtight means, for example. The area around the airtight means can be surrounded by the first protrusion, the second protrusion, the frame, and the opening / closing body, and when a fire breaks out around the fire door in the fully closed state, the flame generated from the airtight means is gapped. It is possible to suppress the appearance of the outside of.

According to the fire door according to claim 5, since the side wall portion of the first recess is formed as either the first protrusion or the second protrusion, the side wall portion of the first recess is the first protrusion or the first protrusion. It can be formed as either one of the second protrusions, and the number of parts of the fire door can be reduced as compared with the case where the first recess and either the first protrusion or the second protrusion are provided separately.

According to the fire door according to claim 6, since the side wall portion of the second recess is formed as either the first protrusion or the second protrusion, the side wall portion of the second recess is the first protrusion or It can be formed as either one of the second protrusions, and the number of parts of the fire door can be reduced as compared with the case where the second recess and the other one of the first protrusion or the second protrusion are provided separately.

According to the fire door according to claim 7, since the thermal expansion refractory member is arranged at a position on one side or a position on the other side in the gap direction with respect to the airtight means, the gap is closed by the thermal expansion refractory member in the event of a fire. It is possible to prevent the flame generated from the airtight means from coming out of the gap as compared with the case where the thermal expansion fireproof member is not provided.

According to the fire prevention door according to claim 8, since the thermal expansion refractory member is arranged at a position on one side and a position on the other side in the gap direction with respect to the airtight means at a second interval from the airtight means, the thermal expansion Compared to the case where the refractory member is provided only on one side of the gap direction from the airtight means in the gap, it becomes easier to burn until the airtight means is carbonized in the gap closed by the thermal expansion refractory member expanded at the time of fire. .. Further, the airtight means can be easily burned in the gap as compared with the case where the thermal expansion refractory member is provided in close contact with the airtight means. From the above, it becomes easy to suppress the spread of the above-mentioned fire.

According to the fire door according to claim 9, since the width of the first interval is shorter than the width of the gap, the fire door is expected to be longer than the case where the width of the first interval is longer than the width of the gap. Since it becomes difficult for the flame of the fire to flow in from one side of the direction to the other side, it becomes easy to suppress the spread of the fire.

According to the fire door according to claim 10, since the width of the third interval is shorter than the width of the gap, the fire door is expected to be longer than the case where the width of the third interval is longer than the width of the gap. Since it becomes difficult for the flame of the fire to flow in from one side of the direction to the other side, it becomes easy to suppress the spread of the fire.

It is a front view which shows the fire door which concerns on embodiment of this invention. FIG. 3 is a cross-sectional view taken along the line AA of the fire door of FIG. It is BB arrow sectional view of the fire door of FIG. It is an enlarged view of the peripheral area of the door tail side vertical frame material of FIG. 2 (partially not shown). It is an enlarged view of the peripheral area of the door end side vertical frame material of FIG. 2 (partially not shown). It is an enlarged view of the peripheral area of the 2nd longitudinal force bone on the door tail side of FIG. 2 (partially not shown).

Hereinafter, embodiments of the fire door according to the present invention will be described in detail with reference to the accompanying drawings. First, [I] the basic concept of the embodiment will be described, then [II] the specific content of the embodiment will be described, and finally, [III] a modified example for each embodiment will be described. However, the present invention is not limited to the embodiments.

[I] Basic concept of the embodiment First, the basic concept of the embodiment will be described. The embodiment is roughly a fire door provided at an opening of a building, and relates to a fire door provided with a frame provided at the periphery of the opening and an opening / closing body for opening / closing the opening. is there.

Here, the "building" is a concept including, for example, a detached house, an apartment house such as an apartment or a condominium, an office building, a commercial facility, a public facility, etc., although the specific structure and type thereof are arbitrary. .. Further, the "opening of a building" is an opening formed for installing a window or an entrance in a part of a building frame (for example, a wall, a ceiling, or a floor). Further, the "fire door" is a structure for suppressing or limiting the entrance / exit or visibility of an opening of a building, and means a door having fire prevention performance. In addition, the installation position and use of the fire door is arbitrary, but for example, the "entrance door" installed at the entrance, the "autonomous door" installed at the entrance or the entrance, and the "indoor door" installed inside the building. , Etc. are included. In addition, the opening and closing structure of the fire door is arbitrary, for example, a single-opening hinged door, a single-opening hinged door with a child door (so-called child door), a double-opening hinged door (so-called parent-child type door), and one piece. It can be configured as an open sliding door or a double open sliding door. Hereinafter, in the embodiment, the fire door is a single-opening hinged door with a child door arranged at a position facing the evacuation passage of a building such as a commercial facility, and a fire occurs in a room adjacent to the evacuation passage. A case where the fire door is used to suppress the spread of fire when a fire occurs will be described.

[II] Specific contents of the embodiment Next, the specific contents of the embodiment will be described.

(Constitution)
First, the configuration of the fire door to which the opening / closing body according to the embodiment is applied will be described. In the following description, the X direction in FIG. 1 is the left-right direction of the fire door (-X direction is the left direction of the fire door, the + X direction is the right direction of the fire door), and the Y direction in FIG. 2 is the front-rear direction of the fire door (+ Y). The direction is the front direction of the fire door (the direction outside the room), the -Y direction is the rear direction of the fire door (the direction inside the room), and the Z direction in FIG. 1 is the vertical direction of the fire door (+ Z direction). The upward direction of the fire door and the -Z direction are referred to as the downward direction of the fire door).

As shown in FIG. 1, the fire door 1 roughly includes a frame body 10, a first opening / closing body 20, a second opening / closing body 60, a first hinge portion 91, and a second hinge portion 92. However, the description of the fire door 1 unless otherwise specified will be omitted as it is the same as the conventional one. The mounting method (or connection method) between the various members constituting the fire door 1 to be described later is arbitrary, but for example, a mounting hole (for example, a rivet) formed in a member on the mounting side or a member on the mounting partner side. Attach the mounting member to the mounting partner member via holes, screw holes, screw holes, etc. with fixtures (eg, rivets, mounting screws, screws, etc.), welding, adhesive, double-sided tape, etc. The method (or connection) is adopted.

Further, the opening 3 (in FIG. 1, a rectangular opening 3 elongated in the vertical direction) formed in the skeleton 2 (specifically, the wall portion) is opened and closed by the first opening / closing body 20. It is divided into one opening 3a and a second opening 3b that is opened and closed by the second opening / closing body 60. Specifically, as shown in FIG. 1, the first opening 3a and the second opening 3b are arranged so that the first opening 3a surrounds the circumference of the second opening 3b. Here, the specific shape and size of the second opening 3b are arbitrary, but in the embodiment, the front shape is set to a rectangular shape, and the length in the left-right direction is the first. The length is set to be shorter than the length in the left-right direction of the 1 opening / closing body 20 (for example, about half the length in the left-right direction of the first opening / closing body 20), and the length in the vertical direction is the first. The length is set to be shorter than the vertical length of the 1 opening / closing body 20 (for example, about 1/3 of the vertical length of the 1st opening / closing body 20).

Further, in the opening 3 configured as described above, the "state of the first opening / closing body 20 and the second opening / closing body 60" includes a "fully closed state", a "fully open state", and a "half open state". It is a concept. Of these, the "fully closed state" is a state in which the opening 3 is fully closed by the first opening / closing body 20 and the second opening / closing body 60, and in the embodiment, the first opening / closing body 20 and the first opening / closing body 20 in the fully closed state. 2 The position of the opening / closing body 60 is referred to as a "fully closed position". Further, the "fully open state" is a state in which the opening 3 is fully opened by the first opening / closing body 20 and the second opening / closing body 60, and in the embodiment, the first opening / closing body 20 and the second opening / closing body 60 in the fully opened state. The position of is referred to as a "fully open position". The "half-open state" is a state in which the first opening / closing body 20 or the second opening / closing body 60 is located between the fully closed position and the fully opened position.

Further, the "state of the first opening / closing body 20" is a concept including a "first fully closed state", a "first fully open state", and a "first half open state". Of these, the "first fully closed state" is a state in which the first opening 3a is fully closed by the first opening / closing body 20, and in the embodiment, the position of the first opening / closing body 20 in the first fully closed state. Is referred to as a "first fully closed position". Further, the "first fully open state" is a state in which the first opening 3a is fully closed by the first opening / closing body 20, and in the embodiment, the position of the first opening / closing body 20 in the first fully open state is set to "first". It is called "1 fully open position". Further, the "first half-open state" is a state in which the first opening / closing body 20 is located between the first fully closed position and the first fully open position.

Further, the "state of the second opening / closing body 60" is a concept including a "second fully closed state", a "second fully open state", and a "second half open state". Of these, the "second fully closed state" is a state in which the second opening 3b is fully closed by the second opening / closing body 60, and in the embodiment, the position of the second opening / closing body 60 in the second fully closed state. Is referred to as a "second fully closed position". Further, the "second fully open state" is a state in which the second opening 3b is fully opened by the second opening / closing body 60, and in the embodiment, the position of the second opening / closing body 60 in the second fully opened state is set to "second. It is called "fully open position". Further, the "second half-open state" is a state in which the second opening / closing body 60 is located between the second fully closed position and the second fully open position.

(Structure-frame)
The frame body 10 is installed on the peripheral edge of the opening 3 formed in the skeleton 2, and as shown in FIG. 1, for example, in a refractory material (for example, a steel material such as a steel material or a stainless steel material). A pair of left and right vertical frame members 11 and 12 and a pair of upper and lower horizontal frame members 13 and 14 are provided. The vertical frame members 11 and 12 and the horizontal frame members 13 and 14 are fixed to the skeleton 2, respectively, and are formed so that the front shape becomes a substantially rectangular annular shape by being combined with each other. In the following, if necessary, of the pair of left and right vertical frame members 11 and 12, the vertical frame member 11 located on the door tail side of the opening 3 will be referred to as the "door tail side vertical frame material 11", and the opening 3 The vertical frame material 12 located on the door end side of the door is referred to as a "door end side vertical frame material 12". Further, among the pair of upper and lower horizontal frame members 13 and 14, the horizontal frame member 13 located on the upper side of the opening 3 is referred to as "upper horizontal frame member 13", and the horizontal frame member located on the lower side of the opening 3 is referred to. 14 is referred to as "sliding side horizontal frame material 14".

Further, the door end side vertical frame member 12 is provided with a first dead bolt receiver and a first latch receiver (both are not shown). The first dead bolt receiver is a first dead bolt receiving means for receiving the first dead bolt described later, which is provided on the first opening / closing body 20 in the fully closed state or the first fully closed state, and is the first dead bolt receiving means described later. It is located at the position corresponding to the dead bolt. The first latch receiver is a first latch receiving means for receiving the first latch described later, which is provided on the first opening / closing body 20, and is arranged at a position corresponding to the first latch. The details of the configuration of the frame body 10 will be described later.

(Structure-first opening / closing body)
The first opening / closing body 20 is a flat plate-shaped opening / closing body for opening / closing the opening 3 for the purpose of passing a passage target (for example, a person, an animal, an object, etc.). As shown in FIGS. 2 and 3, the first opening / closing body 20 is provided in the frame body 10 with a gap G1 (hereinafter, referred to as “first gap G1”) separated from the frame body 10. 1 The outer opening / closing body frame 30, the first inner opening / closing body frame 40, the first chamber outer surface material 50a, and the first chamber side surface material 50b are provided.

(Structure-First opening / closing body-First outer opening / closing body frame)
Returning to FIG. 2, the first outer opening / closing body frame 30 is a frame mainly responsible for the rigidity of the first opening / closing body 20. The first outer opening / closing body frame 30 is formed so that the front shape becomes a rectangular annular shape by combining a plurality of long ribs formed of, for example, a refractory material (for example, a steel material). Specifically, as shown in FIGS. 2 and 3, it is composed of a pair of left and right first external longitudinal force bones 31 and 32 and a pair of upper and lower first external lateral force bones 33 and 34. Of these, the pair of left and right first external longitudinal force bones 31 and 32 are formed so that their lengths in the longitudinal direction are substantially the same as each other, and are arranged so as to be substantially along the vertical direction. Further, the pair of upper and lower first lateral force bones 33, 34 are formed so that their lengths in the longitudinal direction are substantially the same as each other, and are arranged so as to be substantially along the left and right directions. In the following, among the first external longitudinal force bones 31 and 32, the first external longitudinal force bone 31 on the door tail side will be referred to as "door tail side first external longitudinal force bone 31" as necessary, and will be referred to as the door end side. The first external longitudinal force bone 32 of the above is referred to as "the first external longitudinal force bone 32 on the buttock side". Further, among the first lateral lateral force bones 33 and 34, the upper first lateral lateral force bone 33 is referred to as "upper first lateral lateral force bone 33", and the lower first lateral lateral force bone 34 is "lower". It is referred to as "lateral first lateral lateral force bone 34".

Further, regarding the specific configuration of the door tail side first outer longitudinal force bone 31, the door tip side first outer longitudinal force bone 32, the upper first outer lateral force bone 33, and the lower first outer lateral force bone 34. Although it is optional, in the embodiment, as shown in FIGS. 2 and 3, the cross-sectional shape of the cross section orthogonal to the longitudinal direction of the self is substantially U-shaped toward the inside of the first opening / closing body 20. It is formed (the same applies to the various reinforced bones of the first inner opening / closing body frame 40 described later and the various reinforced bones of the second opening / closing body frame 70 described later).

(Structure-First opening / closing body-First inner opening / closing body frame)
Returning to FIG. 2, the first inner opening / closing body frame 40 is a frame mainly responsible for the rigidity of the first opening / closing body 20. The first inner opening / closing body frame 40 is provided at a position substantially corresponding to the second opening 3b in the first outer opening / closing body frame 30, and is formed of, for example, a refractory material (for example, a steel material). By combining a plurality of long refractory bones, the front shape is formed to be a rectangular ring. Specifically, as shown in FIGS. 2 and 3, it is composed of a pair of left and right first internal longitudinal force bones 41 and 42 and a pair of upper and lower first internal lateral force bones 43 and 44. Of these, the pair of left and right first internal longitudinal force bones 41, 42 are formed so that their lengths in the longitudinal direction are substantially the same as each other, and are arranged so as to be substantially along the vertical direction. Further, the pair of upper and lower first internal lateral force bones 43, 44 are formed so that their lengths in the longitudinal direction are substantially the same as each other, and are arranged so as to be substantially along the left and right directions. In the following, among the first internal longitudinal force bones 41 and 42, the first internal longitudinal force bone 41 on the door tail side is referred to as "door tail side first internal longitudinal force bone 41" as necessary, and is referred to as the door end side. The first internal longitudinal force bone 42 of the above is referred to as "the first internal longitudinal force bone 42 on the buttock side". Further, among the first internal lateral force bones 43 and 44, the upper first internal lateral force bone 43 is referred to as "upper first internal lateral force bone 43", and the lower first internal lateral force bone 44 is "lower". It is referred to as "lateral first internal lateral force bone 44".

Further, the first inner longitudinal force bone 42 on the door end side is provided with a second dead bolt receiver and a second latch receiver (both are not shown). The second dead bolt receiver is a second dead bolt receiving means for receiving the second dead bolt described later, which is provided on the second opening / closing body 60 in the fully closed state (or the second fully closed state), and will be described later. It is located at the position corresponding to the second dead bolt. The second latch receiver is a second latch receiving means for receiving the second latch, which will be described later, provided in the second opening / closing body 60, and is arranged at a position corresponding to the second latch.

(Structure-First opening / closing body-First chamber outer surface material, first chamber side surface material)
Returning to FIG. 1, the first chamber outer surface material 50a and the first chamber side surface material 50b are surface materials for covering the first outer opening / closing body frame 30 and the first inner opening / closing body frame 40. For the first chamber outer surface material 50a and the first chamber side surface material 50b, for example, a known surface material having fire resistance (for example, a decorative plate made of steel (for example, steel, stainless steel, etc.)) or the like is used. As shown in FIGS. 1 to 3, the first outer opening / closing body frame 30 and the first inner opening / closing body frame 40 are provided so as to cover the first outer opening / closing body frame 30. The first inner opening / closing body frame 40 is arranged so as to be sandwiched from the outdoor side and the indoor side of the room, and is fixed to the first outer opening / closing body frame 30 and the first inner opening / closing body frame 40 with an adhesive or the like.

(Structure-First opening / closing body-Other configurations)
Returning to FIG. 1, other configurations of the first opening / closing body 20 are arbitrary, but in the embodiment, as shown in FIGS. 1 and 2, the first handle portion 21, the first locking device 22, and the first locking device 22 are used. It further includes one latch (not shown).

Of these, the first handle portion 21 is for performing an opening / closing operation of the first opening / closing body 20, and is configured by using, for example, a known handle or the like (note that the second handle portion 61 described later is also substantially the same). As shown in FIGS. 1 and 2, the first opening / closing body 20 is provided on the door end side portion.

Further, the first locking device 22 is for locking the first opening / closing body 20, and is configured by using, for example, a known locking device including a first dead bolt (not shown), which are shown in FIGS. 1 and 2. As shown, it is provided on the door end side portion of the first opening / closing body 20.

Further, the first latch is for maintaining the first opening / closing body 20 in the fully closed state or the first fully closed state regardless of whether or not the first locking device 22 is locked. For example, a known latch. (Note that the same applies to the second latch described later), and is provided on the door end side portion of the first opening / closing body 20. The details of the configuration of the first opening / closing body 20 will be described later.

(Structure-2nd opening and closing body)
Returning to FIG. 1, the second opening / closing body 60 is a flat plate-shaped opening / closing body for opening / closing the second opening 3b for the purpose of reducing the pressure in the room. As shown in FIGS. 2 and 3, the second opening / closing body 60 is provided with a gap G2 (hereinafter, referred to as “second gap G2”) in the second opening 3b, and the second opening / closing body 60 is provided. A body frame 70, a second chamber outer surface material 80a, and a second chamber side surface material 80b are provided.

(Structure-Second opening / closing body-Second opening / closing body frame)
Returning to FIG. 2, the second opening / closing body frame is a frame mainly responsible for the rigidity of the second opening / closing body 60. The second opening / closing body frame 70 is formed so that the front shape becomes a rectangular annular shape by combining a plurality of long ribs formed of, for example, a refractory material (for example, a steel material). Specifically, as shown in FIGS. 2 and 3, it is composed of a pair of left and right second longitudinal force bones 71 and 72 and a pair of upper and lower second lateral force bones 73 and 74. Of these, the pair of left and right second longitudinal force bones 71 and 72 are formed so that their lengths in the longitudinal direction are substantially the same as each other, and are arranged so as to be substantially along the vertical direction. Further, the pair of upper and lower second lateral force bones 73 and 74 are formed so that their lengths in the longitudinal direction are substantially the same as each other, and are arranged so as to be substantially along the left and right directions. In the following, among the second longitudinal force bones 71 and 72, the second longitudinal force bone 71 on the door tail side will be referred to as the "door tail side second longitudinal force bone 71" as necessary, and the second vertical force bone 71 on the door end side. The longitudinal force bone 72 is referred to as a "door end side second longitudinal force bone 72". Further, among the second lateral force bones 73 and 74, the upper second lateral force bone 73 is referred to as "upper second lateral force bone 73", and the lower second lateral force bone 74 is referred to as "lower second lateral force bone 73". It is called "strength bone 74".

(Structure-Second opening / closing body-Second chamber outer surface material, second chamber side surface material)
Returning to FIG. 1, the second chamber outer surface material 80a and the second chamber side surface material 80b are surface materials for covering the second opening / closing body frame 70. The second chamber outer surface material 80a and the second chamber side surface material 80b are constructed by using, for example, a known surface material having fire resistance (for example, a steel decorative plate), and are shown in FIGS. 1 to 3. As shown, it is provided so as to cover the second opening / closing frame 70, and specifically, the second opening / closing frame 70 is arranged so as to sandwich the second opening / closing frame 70 from the outdoor side and the indoor side of the room. It is fixed to 70 with an adhesive or the like.

(Structure-Second opening / closing body-Other configurations)
Other configurations of the second opening / closing body 60 are optional, but in the embodiment, the second handle portion 61, the second locking device 62, and the second latch (not shown) are further provided.

Of these, the second handle portion 61 is for performing an opening / closing operation of the second opening / closing body 60, and is provided on the door end side portion of the second opening / closing body 60 as shown in FIGS. 1 and 2. There is.

Further, the second locking device 62 is for locking the second opening / closing body 60, and is configured by using a known locking device or the like provided with a second dead bolt (not shown), as shown in FIGS. 1 and 2. Is provided on the door end side portion of the second opening / closing body 60.

The second latch is for maintaining the second opening / closing body 60 at the fully closed state (or the second fully closed state) regardless of whether or not the second locking device 62 is locked. It is provided on the door end side portion of the opening / closing body 60. The details of the configuration of the second opening / closing body 60 will be described later.

(Structure-First hinge part)
Returning to FIG. 1, the first hinge portion 91 is for pivotally supporting the first opening / closing body 20 with respect to the door tail side vertical frame member 11. The first hinge portion 91 is configured by using, for example, a known hinge member (for example, a flag hinge or the like), and as shown in the figure, the end portion of the first opening / closing body 20 on the door tail side (FIG. 1). In the right end portion), a plurality of them are arranged side by side in the vertical direction at intervals from each other, and are attached to the first opening / closing body 20 and the door tail side vertical frame member 11 by a fixture or the like.

(Structure-2nd hinge part)
The second hinge portion 92 is for rotatably supporting the second opening / closing body 60 with respect to the first inner opening / closing body frame 40. The second hinge portion 92 is configured by using, for example, a known hinge member (for example, a hanging hinge for a child door or the like), and as shown in FIGS. 1 to 3, the upper second hinge portion 92a (for example, a hanging hinge for a child door) is used. A hinge portion that can be expanded and contracted in the vertical direction) and a lower second hinge portion 92b (for example, a hinge portion that cannot be expanded and contracted in the vertical direction) are provided.

Of these, the upper second hinge portion 92a is a part of the basic structure of the second hinge portion 92, and is provided in the upper portion of the second opening / closing body 60 on the door tail side as shown in FIG. It is connected to the upper second lateral force bone 73 and the upper first internal lateral force bone 43. Further, the lower second hinge portion 92b is another part of the basic structure of the second hinge portion 92, and is provided in the lower portion of the second opening / closing body 60 on the door tail side as shown in FIG. It is connected to the lower second lateral force bone 74 and the lower first internal lateral force bone 44. In the embodiment, as shown in FIGS. 2 and 3, the dropout prevention portion 92c for preventing the upper second hinge portion 92a from falling off is provided at the door tail side second longitudinal force bone 71 (or its vicinity). It is provided in the part etc.). The fall-out prevention portion 92c is a steel plate-like body having a substantially Z-shaped cross section along the YZ plane, and is arranged slightly below the upper second hinge portion 92a. It is fixed to the second longitudinal force bone 71 on the buttock side by a fixture or the like.

(Structure-Details of the composition of the vertical frame material on the door tail side and the vertical frame material on the door end side)
Returning to FIG. 2, next, the details of the configuration of the door tail side vertical frame member 11 and the door end side vertical frame member 12 of the frame body 10 will be described. However, the door tail side vertical frame material 11 and the door end side vertical frame material 12 can be manufactured in any shape, method, and material, unless otherwise specified. In the embodiment, as shown in FIG. 2, each of the door tail side vertical frame material 11 and the door end side vertical frame material 12 includes a vertical frame material main body 11a, a fixing material 11b, and an outer vertical side airtight portion 11c. ing.

The vertical frame material main body 11a is a basic structure of the door tail side vertical frame material 11 (or the door end side vertical frame material 12). The vertical frame material main body 11a is a hollow body formed so that the cross-sectional shape along the XY plane is substantially U-shaped open toward the outside in the left-right direction, and is above and below the opening 3. It is formed over almost the entire length of the direction. Further, as shown in FIG. 2, the vertical frame material main body 11a is provided with a vertical frame side recess 11d and a vertical frame side airtight recess 11e. Of these, the vertical frame side recess 11d is for avoiding interference between the vertical frame material main body 11a and the first opening / closing body 20 while accommodating the first opening / closing body 20 (a recess having a so-called interlocking structure). ), The portion of the vertical frame material main body 11a corresponding to the first opening / closing body 20 is formed by denting it toward the outside in the left-right direction. Further, the vertical frame side airtight recess 11e is for securing the installation space of the outer vertical frame side airtight portion 11c, and the portion of the vertical frame side recess 11d on the indoor side of the room (the rear portion in FIG. 2). It is formed by denting a part of the room toward the inside of the room.

The fixing material 11b is for fixing the vertical frame material main body 11a to the skeleton 2 and reinforcing the vertical frame material main body 11a. The fixing material 11b is formed of a plate-like body, and specifically, as shown in FIG. 2, the length of the fixing material 11b in the front-rear direction is a U-shaped opening of the vertical frame material main body 11a. It is formed so that it is substantially the same as (or longer) the length in the front-rear direction at the end portion, and the length in the vertical direction of the fixing material 11b is shorter than the length in the vertical direction of the vertical frame material main body 11a. ing. Further, the fixing member 11b is vertically separated by a predetermined interval on the U-shaped open end side of the vertical frame material main body 11a (in FIG. 2, the outer end side in the left-right direction of the vertical frame material main body 11a). A plurality of them are arranged side by side along the direction, and are fixed to the vertical frame material main body 11a by welding or the like.

The outer vertical side airtight portion 11c is an airtight means for enhancing the airtightness between the door tail side vertical frame member 11 or the door end side vertical frame member 12 and the first opening / closing body 20. The outer vertical side airtight portion 11c is configured by using, for example, a known airtight material (for example, airtight rubber or the like) (the same applies to other airtight portions), as shown in FIG. , The vertical frame side airtight recess 11e is provided over substantially the entire length of the vertical frame material main body 11a in the vertical direction.

(Structure-Details of the composition of the upper horizontal frame material and the slip side horizontal frame material)
Next, the details of the configuration of the upper horizontal frame member 13 and the slip side horizontal frame member 14 of the frame body 10 will be described. However, the upper horizontal frame material 13 and the slippery side horizontal frame material 14 can be manufactured in any shape, method, and material, unless otherwise specified. In the embodiment, as shown in FIG. 3, each of the upper horizontal frame member 13 and the slipping side horizontal frame member 14 includes a horizontal frame member main body 13a, a fixing member 13b, and an outer lateral airtight portion 13c. ..

The horizontal frame member main body 13a is a basic structure of the upper horizontal frame member 13 (or the horizontal frame member 14 on the slip side). The horizontal frame material main body 13a is a hollow body formed so that the cross-sectional shape along the YZ plane is substantially U-shaped open toward the outside in the vertical direction, and is left and right of the opening 3. It is formed over almost the entire length of the direction. Further, as shown in FIG. 3, the horizontal frame material main body 13a is provided with a horizontal frame side recess 13d and a horizontal frame side airtight recess 13e. The horizontal frame side recess 13d is for avoiding interference between the horizontal frame material main body 13a and the first opening / closing body 20 while accommodating the first opening / closing body 20 (a recess having a so-called interlocking structure), and is lateral. It is formed by denting a portion of the frame material body 13a corresponding to the first opening / closing body 20 toward the outside in the vertical direction. Further, the horizontal frame side airtight recess 13e is for securing the installation space of the outer lateral airtight portion 13c, and the portion of the horizontal frame side recess 13d on the indoor side of the room (the rear portion in FIG. 3). It is formed by denting a part of the room toward the inside of the room.

The fixing material 13b is for fixing the horizontal frame material main body 13a to the skeleton 2 and reinforcing the horizontal frame material main body 13a. The fixing material 13b is formed of a plate-like body, and specifically, as shown in FIG. 3, the length of the fixing material 13b in the front-rear direction is a U-shaped opening of the horizontal frame material main body 13a. It is formed so that it is substantially the same as (or longer) the length in the front-rear direction at the end portion, and the length in the left-right direction of the fixing member 13b is shorter than the length in the left-right direction of the horizontal frame material body 13a. ing. Further, the fixing member 13b is left and right at a predetermined interval on the U-shaped open end side of the horizontal frame material main body 13a (in FIG. 3, the outer end side in the vertical direction of the horizontal frame material main body 13a). A plurality of them are arranged side by side along the direction, and are fixed to the horizontal frame material main body 13a by welding or the like.

The outer lateral airtight portion 13c is an airtight means for increasing the airtightness between the upper horizontal frame member 13 or the slipping side horizontal frame member 14 and the first opening / closing body 20, and as shown in FIG. The airtight recess 13e on the horizontal frame side is provided over substantially the entire length of the horizontal frame material main body 13a in the left-right direction. In the embodiment, the outer lateral airtight portion 13c of each of the upper horizontal frame member 13 and the slippery side horizontal frame member 14 is outside each of the door tail side vertical frame member 11 and the door end side vertical frame member 12. Since they are arranged so as to be in contact with the vertical airtight portions 11c, it can be said that these airtight portions are arranged in a four-circumferential manner.

(Structure-Details of the configuration of the first opening / closing body)
Returning to FIG. 2, the details of the configuration of the first opening / closing body 20 will be described next. However, the first opening / closing body 20 can be manufactured in any shape, method, and material, unless otherwise specified. In the embodiment, as shown in FIGS. 2 and 3, the first opening / closing body 20 has a first outer vertical recess 23a, a first outer horizontal recess 23b, a vertical airtight portion 24a, and a horizontal airtight portion. It includes 24b, an inner vertical side airtight portion 25a, and an inner horizontal side airtight portion 25b.

The first outer vertical recess 23a is for suppressing the flame of fire from flowing out from either the outdoor side or the indoor side of the room to the other by making the first gap G1 stepped. As shown in FIG. 2, a part of the indoor side portion (rear side portion in FIG. 2) of the door tail side portion (or door tip side portion) of the first opening / closing body 20 is placed on the outdoor side of the room. It is formed by denting it toward it.

The first outer lateral recess 23b is for suppressing the flame of fire from flowing out from either the outdoor side or the indoor side of the room to the other by making the first gap G1 stepped. As shown in FIG. 3, a part of the indoor side portion (rear side portion in FIG. 3) of the upper portion (or the slip side portion) of the first opening / closing body 20 is directed toward the outdoor side of the room. It is formed by denting.

The vertical side gaping portion 24a covers the inside of the room through the second gap G2 so as not to be exposed to the outside of the room. As shown in FIG. 2, the vertical side gaping portion 24a is a second opening 3b of the first opening / closing body 20 (specifically, the first chamber side surface material 50b or the first chamber outer surface material 50a). Of the side and door tail side (or door tip side), the indoor side of the room is formed to be convex toward the second opening / closing body 60. Further, the vertical side interlocking portion 24a is provided with a first inner vertical airtight recess 26a. The first inner vertical airtight recess 26a is for securing an installation space for the inner vertical airtight portion 25a, and is an outdoor portion of the room among the vertical airtight portions 24a (the front portion in FIG. 2). It is formed by denting a part of the room toward the inside of the room.

The lateral side gap 24b covers the inside of the room through the second gap G2 so as not to be exposed to the outside. As shown in FIG. 3, the lateral side gaping portion 24b is a second opening 3b of the first opening / closing body 20 (specifically, the first chamber side surface material 50b or the first chamber outer surface material 50a). Of the side and upper side (or slip side) parts, the part on the indoor side of the room is formed to be convex toward the second opening / closing body 60. Further, the first inner lateral airtight recess 26b is provided in the lateral side gaping portion 24b. The first inner lateral airtight recess 26b is for securing the installation space of the inner lateral airtight portion 25b, and is the outdoor portion of the room among the lateral interlocking portions 24b (the front portion in FIG. 3). It is formed by denting a part of the room toward the inside of the room.

The inner vertical side airtight portion 25a is an airtight means for increasing the airtightness between the first opening / closing body 20 and the second opening / closing body 60, and as shown in FIG. 2, in the first inner vertical airtight recess 26a. The second opening / closing body 60 is provided over substantially the entire length in the vertical direction.

The inner lateral airtight portion 25b is an airtight means for increasing the airtightness between the first opening / closing body 20 and the second opening / closing body 60, and as shown in FIG. 3, in the first inner lateral airtight recess 26b. The second opening / closing body 60 is provided over substantially the entire length in the left-right direction. In the embodiment, the inner lateral airtight portion 25b located on the upper side and the inner lateral airtight portion 25b located on the lower side are respectively located on the inner vertical side airtight portion 25a located on the door tail side and the door tip side. Since the airtight portions 25a on the inner vertical side are arranged so as to be in contact with each other, it can be said that these airtight portions are arranged in a four-circumferential manner.

(Structure-Details of the configuration of the second opening / closing body)
Returning to FIG. 2, the details of the configuration of the second opening / closing body 60 will be described next. However, the second opening / closing body 60 can be manufactured in any shape, method, and material, unless otherwise specified. In the embodiment, as shown in FIGS. 2 and 3, the second opening / closing body 60 includes a second vertical recess 63a and a second horizontal recess 63b.

The second vertical recess 63a is for suppressing the flame of the fire from flowing out from either the outdoor side or the indoor side of the room to the other by making the second gap G2 stepped. As shown in 2, a part of the indoor side portion (rear side portion in FIG. 2) of the door tail side portion (or door tip side portion) of the second opening / closing body 60 is directed to the outdoor side of the room. It is formed by denting.

The second lateral recess 63b is for suppressing the flame of the fire from flowing out from either the outdoor side or the indoor side of the room to the other by making the second gap G2 stepped. As shown in 3, a part of the indoor side portion (rear side portion in FIG. 3) of the upper portion (or the slip side portion) of the second opening / closing body 60 is recessed toward the outdoor side of the room. It is formed by fire.

(Structure-Fire spread suppression structure)
Next, the fire spread suppression structure of the fire door 1 will be described. When a fire breaks out on either the outdoor side or the indoor side of the room (that is, when a fire breaks out around the fire door 1), the fire door 1 passes through the room through the fire door 1. It is provided with a fire spread suppressing structure for suppressing the spread of fire from either the outdoor side or the indoor side to the other. In addition, this fire spread suppression structure includes a first fire spread suppression structure and a second fire spread suppression structure. In the following, each of these fire spread suppression structures will be described in sequence.

(Structure-Fire spread suppression structure-First fire spread suppression structure)
Returning to FIG. 2, first, the first fire spread suppression structure will be described. In the first fire spread suppression structure, when a fire breaks out on either the outdoor side or the indoor side of the room, the fire goes from either the outdoor side or the indoor side of the room to the other through the first gap G1. It has a structure to prevent the spread of fire. Further, the first fire spread suppression structure includes a door tail side first fire spread suppression structure located on the door tail side, a door end side first fire spread suppression structure located on the door end side, and an upper first fire spread suppression structure located on the upper side. It has a structure and a first fire spread suppression structure on the buttock side located on the buttock side. In the embodiment, the door tail side first fire spread suppression structure (see FIG. 4), the door end side first fire spread suppression structure (see FIG. 5), the upper first fire spread suppression structure, and the slip side first fire spread suppression structure. Since each structure has substantially the same structure, only the structure of the door tail side first fire spread suppression structure will be described below. The features of the first fire spread suppression structure on the door tail side are as shown below in the embodiment.

(Structure-Fire spread suppression structure-First fire spread suppression structure-First feature)
First, regarding the first feature of the door tail side first fire spread suppression structure, as shown in FIGS. 2 and 4, a first outer protrusion 101 and a second outer protrusion 102 are provided in the first gap G1. Has been done.

The first outer protrusion 101 is a first protrusion for suppressing the spread of fire, and the second outer protrusion 102 is a second protrusion for suppressing the spread of fire. The first outer protrusion 101 and the second outer protrusion 102 are plate-like bodies formed of, for example, a refractory material (for example, a steel material), and as shown in FIG. 4, the inside of the first gap G1. In the above, the space OS1 (hereinafter, referred to as "first outer space OS1") is provided so as to be separated from each other with respect to the first gap direction described later. Specifically, the first outer protruding portion 101 is provided in the vertical frame side airtight recess 11e of the door tail side vertical frame member 11. Further, the second outer protruding portion 102 is provided in the first outer vertical recess 23a of the first opening / closing body 20, and is provided at a position farther from the outer vertical side airtight portion 11c than the first outer protruding portion 101. ing.

The specific size of the first outer protrusion 101 is arbitrary, but in the embodiment, the frame body 10 (specifically, the door tail side vertical frame member 11) is directed toward the first opening / closing body 20. The size is set so that it can be projected so as not to come into contact with the first opening / closing body 20. That is, the length (thickness) of the first outer protruding portion 101 in the left-right direction is set to substantially the same length as the thickness of the door tail side vertical frame material 11 (or the door tail side vertical frame material 11). The length may be set to be thicker or thinner than the thickness of). Further, the length of the first outer protrusion 101 in the front-rear direction is set to be shorter than the length of the vertical frame-side airtight recess 11e in the front-rear direction. Further, the vertical length of the first outer protruding portion 101 is set to be substantially the same as the vertical length of the outer vertical airtight portion 11c.

The specific size of the second outer protrusion 102 is arbitrary, but in the embodiment, the first opening / closing body 20 is changed to the frame body 10 (specifically, the door tail side vertical frame member 11). The size is set so that it can be projected so as not to come into contact with the frame body 10. That is, the length (thickness) of the second outer protrusion 102 in the left-right direction is set to substantially the same length as the thickness of the first outer protrusion 101 (or the thickness of the first outer protrusion 101). May be set to a thicker or thinner length). Further, the length of the second outer protrusion 102 in the front-rear direction is set to be shorter than the length of the first outer vertical recess 23a in the front-rear direction. Further, the vertical length of the second outer protruding portion 102 is set to be substantially the same as the vertical length of the outer vertical side airtight portion 11c.

The method of installing the first outer protrusion 101 and the second outer protrusion 102 is arbitrary, but in the embodiment, it is as follows. That is, first, the first outer protruding portion 101 is provided so as to project from the door tail side vertical frame member 11 toward the first opening / closing body 20 so as not to come into contact with the first opening / closing body 20. , As shown in FIG. 4, the vertical frame side airtight recess 11e is provided so as to project from the bottom portion toward the outdoor side of the room. Further, the second outer protruding portion 102 is provided so as to project from the first opening / closing body 20 toward the door tail side vertical frame member 11 so as not to come into contact with the door tail side vertical frame member 11. , As shown in FIG. 4, it is provided so as to project from the bottom portion of the first outer vertical recess 23a toward the indoor side of the room. Further, the first outer protrusion 101 and the second outer protrusion 102 are arranged so as to face each other so that the first outer protrusion 101 and the second outer protrusion 102 overlap when viewed from the first gap direction. ing. Specifically, as shown in FIG. 4, the tip portion of the second outer protrusion 102 and its vicinity are located in the vertical frame side airtight recess 11e, and the first outer protrusion 101 and the first outer protrusion 101 when viewed from the left and right directions The tip side portions of the second outer protrusions 102 are arranged so as to face each other so as to overlap each other.

Here, the "first gap direction" means a direction from either the inlet side end portion or the outlet side end portion of the first gap G1 toward the other, and in the embodiment, the first gap G1 The direction from the outdoor end of the room to the indoor end of the room of the first gap G1 and vice versa. More specifically, when the shape of the first gap G1 shows a complicatedly bent shape as shown in FIG. 4, the first gap direction of the portion of the first gap G1 along the left-right direction is left and right. The first gap direction of the portion of the first gap G1 along the vertical direction is the vertical direction (the same applies to the second gap direction described later).

Due to such a first feature, the first outer protruding portion 101 and the second outer protruding portion 102 have an interlaced structure, so that the first outer protruding portion 101 and the second outer protruding portion 102 allow the fire door 1 to be expected. It is possible to suppress the spread of the fire from one side to the other side in the direction, and it is possible to improve the fire prevention performance of the fire door 1. Further, as compared with the case where the thermal expansion fireproof member is provided, the fire door 1 can be manufactured at a low cost, the labor for assembling the fire door 1 can be reduced, and the manufacturability of the fire door 1 can be improved.

(Structure-Fire spread suppression structure-First fire spread suppression structure-Second feature)
Returning to FIG. 2, next, regarding the second feature of the door tail side first fire spread suppression structure, the first outer protrusion 101 and the second outer protrusion 102 have a first gap more than the outer vertical airtight portion 11c. One or more are arranged at a position on one side and a position on the other side in the direction.

Specifically, as shown in FIGS. 2 and 4, one first outer protrusion 101 and one second outer protrusion 102 are arranged at positions on the door end side of the outer vertical airtight portion 11c. The first outer protruding portion 101 and the second outer protruding portion 102 are arranged one by one at the position on the door tail side with respect to the outer vertical side airtight portion 11c.

In this case, the width of the first outer spacing OS1 is arbitrary, but in the embodiment, the first outer protrusions 101 and the second outer protrusions 101 and the second outer protrusions 101 located on the door tail side or the door tip side of the outer vertical side airtight portion 11c. The width of the first outer space OS1 with the outer protrusion 102 is set shorter than the width W1 of the first gap G1. Specifically, as shown in FIG. 4, only the width of the first outer distance OS1 between the first outer protrusion 101 and the second outer protrusion 102 located on the door end side of the outer vertical airtight portion 11c is set. , It is set shorter than the width W1 of the first gap G1. As a result, the fire flame is less likely to flow from one side to the other side in the expected direction of the fire door 1 as compared with the case where the width of the first outer spacing OS1 is made longer than the width W1 of the first gap G1. Therefore, it becomes easy to suppress the spread of the fire. However, the present invention is not limited to this, and for example, the width of the first outer spacing OS1 may be set longer (or the same) than the width W1 of the first gap G1. The above-mentioned "first outer spacing OS1" corresponds to the "first spacing" in the claims.

Further, the width of the gap OS2 (hereinafter, referred to as "second outer spacing OS2") between the first overlapping portion D1 of the frame body 10 and the first outer protruding portion 101 or the second outer protruding portion 102 is arbitrary. In the embodiment, from the width of the second outer space OS2 between the first overlapping portion D1 and the second outer protruding portion 102 located on the door tail side of the outer vertical side airtight portion 11c, or from the outer vertical side airtight portion 11c. The width of the second outer distance OS2 between the first overlapping portion D1 and the second outer protruding portion 102 located on the door end side is set shorter than the width W1 of the first gap G1. Specifically, as shown in FIG. 4, only the width of the second outer space OS2 between the first overlapping portion D1 and the second outer protruding portion 102 located on the door tail side of the outer vertical side airtight portion 11c is set. It is set shorter than the width W1 of the first gap G1. Here, the "first overlapping portion D1" is a side wall portion of the vertical frame side airtight recess 11e among the indoor side portions of the room in the frame body 10 (specifically, the vertical frame side recess 11d). It means a portion formed so as to overlap the first outer protruding portion 101 or the second outer protruding portion 102 when viewed from the first gap direction. As a result, the fire flame is less likely to flow from one side to the other side in the expected direction of the fire door 1 as compared with the case where the width of the second outer space OS2 is longer than the width W1 of the first gap G1. Therefore, it becomes easy to suppress the spread of the fire. However, the present invention is not limited to this, and for example, the width of the second outer spacing OS2 may be set longer (or the same) than the width W1 of the first gap G1 (the first fire spread on the door end side according to the embodiment). The setting is followed for the suppression structure (see FIG. 5), the upper first fire spread suppression structure, and the slip side first fire spread suppression structure). The above-mentioned "second outer spacing OS2" corresponds to the "third spacing" in the claims, and the "first overlapping portion D1" corresponds to the "overlapping portion" in the claims.

Due to such a second feature, the outer vertical airtight portion 11c can be surrounded by the first outer protruding portion 101, the second outer protruding portion 102, the frame body 10, and the first opening / closing body 20, and in a fully closed state. When a fire breaks out around the fire door 1, it is possible to prevent the flame generated from the outer vertical airtight portion 11c from coming out of the first gap G1. Further, since the first overlapping portion D1 and the second outer protruding portion 102 have an interlaced structure, the first overlapping portion D1 and the second outer protruding portion 102 move the fire door 1 from one side to the other in the expected direction. It becomes easier to prevent the fire from spreading.

(Structure-Fire spread suppression structure-First fire spread suppression structure-Third feature)
Returning to FIG. 2, next, regarding the third feature of the door tail side first fire spread suppression structure, as shown in FIGS. 2 and 4, the first outer recess 103 and the second outer side are contained in the first gap G1. A recess 104 is provided.

(Structure-Fire spread suppression structure-First fire spread suppression structure-Third feature-First outer recess)
The first outer recess 103 is a first recess for accommodating the outer vertical airtight portion 11c. The first outer recess 103 is, for example, a plate-like body formed of a refractory material (for example, a steel material or the like), and specifically, as shown in FIG. 4, the door tail side vertical frame member 11 Is formed as a separate body, is provided at the bottom of the vertical frame side airtight recess 11e of the door tail side vertical frame member 11, and is provided so as to accommodate the outer vertical side airtight portion 11c.

Further, the specific shape and size of the first outer recess 103 are set as follows (the same applies to the first inner recess 113 described later). That is, the planar shape of the first outer recess 103 is set to be substantially U-shaped open toward the outside of the room. Further, the length of the first outer recess 103 in the left-right direction is set to be substantially the same as the length of the outer vertical airtight portion 11c in the left-right direction. Further, the length of the first outer recess 103 in the front-rear direction is set shorter than the length of the outer vertical airtight portion 11c in the front-rear direction. Further, the vertical length of the first outer concave portion 103 is set to be substantially the same as the vertical length of the outer vertical side airtight portion 11c.

The specific configuration of the first outer recess 103 is arbitrary, but in the embodiment, the side wall portion of the first outer recess 103 is either the first outer protrusion 101 or the second outer protrusion 102. Specifically, as shown in FIG. 4, the side wall portion on the door tail side and the side wall portion on the door tip side are formed as the first outer protrusion 101. As a result, the side wall portion of the first outer recess 103 can be formed as either the first outer protrusion 101 or the second outer protrusion 102, and the first outer recess 103 and the first outer protrusion 101 or the second outer protrusion 101 can be formed. The number of parts of the fire door 1 can be reduced as compared with the case where any one of the portions 102 is provided separately.

(Structure-Fire spread suppression structure-First fire spread suppression structure-Third feature-Second outer recess)
The second outer recess 104 is a second recess for covering the first outer recess 103 and the outer vertical airtight portion 11c. The second outer recess 104 is, for example, a plate-like body formed of a refractory material (for example, a steel material or the like), and specifically, is formed separately from the first opening / closing body 20. As shown in FIG. 4, it is provided at the bottom of the first outer vertical recess 23a of the first opening / closing body 20, and is provided so as to cover the first outer recess 103 and the outer vertical airtight portion 11c from the outdoor side of the room. ing. Further, a plate-shaped first contact portion 104a that contacts the outer vertical side airtight portion 11c is provided at the bottom portion of the second outer recess 104.

Further, the specific shape and size of the second outer recess 104 are as follows in the embodiment (note that the same applies to the second inner recess 114 described later). That is, the planar shape of the second outer recess 104 is set to be substantially U-shaped open toward the indoor side of the room. Further, the length of the second outer recess 104 in the left-right direction is set to be slightly longer than the length of the first outer recess 103 in the left-right direction. Further, the length of the second outer recess 104 in the front-rear direction is set shorter than the length of the outer vertical airtight portion 11c in the front-rear direction. Further, the length of the second outer recess 104 in the vertical direction is set to be substantially the same as the length of the outer vertical airtight portion 11c in the vertical direction.

The specific configuration of the second outer recess 104 is arbitrary, but in the embodiment, the side wall portion of the second outer recess 104 is either the first outer protrusion 101 or the second outer protrusion 102. It is formed as the other, and specifically, as shown in FIG. 4, the side wall portion on the door tail side and the side wall portion on the door tip side are formed as the second outer protrusion 102. As a result, the side wall portion of the second outer recess 104 can be formed as either the first outer protrusion 101 or the second outer protrusion 102, and the second outer recess 104 and the first outer protrusion 101 or the second outer protrusion 101 can be formed. The number of parts of the fire door 1 can be reduced as compared with the case where any one of the parts 102 is provided separately.

Due to such a third feature, the number of parts of the fire door 1 can be reduced when the first outer recess 103 and the second outer recess 104 are provided, so that the manufacturing cost of the fire door 1 and the labor for assembling can be reduced. Is possible.

(Structure-Fire spread suppression structure-First fire spread suppression structure-Fourth feature)
Returning to FIG. 2, subsequently, regarding the fourth feature of the door tail side first fire spread suppression structure, as shown in FIGS. 2 and 4, a first thermal expansion refractory member 105 is provided in the first gap G1. Has been done.

When a fire breaks out around the fire door 1 in the fully closed state, the first thermal expansion refractory member 105 expands with the heat of the fire to fill the first gap G1. It is a thermal expansion fireproof member for closing. The first thermal expansion refractory member 105 is a known thermal expansion refractory member (for example, Fiblock (registered trademark)) that foams when heated at a predetermined temperature (specifically, a temperature of 150 ° C. to 250 ° C.). ) Etc.) (Note that the same applies to the second thermal expansion refractory member 115, which will be described later), and is attached to the first opening / closing body 20 in the first gap G1. Specifically, as shown in FIG. 4, the first heat is formed in a notch (not shown) formed in a part of the first chamber outer surface material 50a or the first chamber side surface material 50b of the first opening / closing body 20. The expanded refractory member 105 is arranged (more specifically, arranged so as to be substantially flush with the surface of the first chamber outer surface material 50a or the first chamber side surface material 50b), and the arranged first thermal expansion The refractory member 105 is connected to the first opening / closing body 20 with double-sided tape, an adhesive, screws, or the like.

The method of installing the first thermal expansion refractory member 105 is arbitrary, but in the embodiment, it is installed (arranged) at a position on one side or a position on the other side in the first gap direction with respect to the outer vertical side airtight portion 11c. ing. Specifically, as shown in FIG. 4, at a position on one side and a position on the other side in the first gap direction (positions on the door tail side and the door tip side in FIG. 4) with respect to the outer vertical side airtight portion 11c. The outer vertical airtight portion 11c and the interval OS3 (hereinafter, referred to as "third outer interval OS3") are arranged so as to be separated from each other.

In this case, the width of the third outer spacing OS3 is arbitrary, but in the embodiment, it is set longer than the width W1 of the first gap G1. For example, as shown in FIG. 4, the first heat is set. The expansion refractory member 105 may be set to a length that allows it to be located at or near the end of the first gap G1 in the first gap direction (note that the width of the third inner space IS3 described later is also set). (Same as above).

Due to such a fourth feature, the first gap G1 can be closed by the first thermal expansion refractory member 105 in the event of a fire, and the outer vertical side airtight portion 11c is compared with the case where the first thermal expansion refractory member 105 is not provided. It is possible to prevent the flame generated from the above from coming out to the outside of the first gap G1. In particular, since the outer vertical airtight portion 11c and the third outer space OS3 are arranged at one side position and the other side position in the first gap direction from the outer vertical side airtight portion 11c, the first thermal expansion Compared with the case where the fireproof member 105 is provided only at a position on one side of the outer vertical airtight portion 11c in the first gap G1 in the direction of the first gap, the fireproof member 105 is blocked by the first thermal expansion fireproof member 105 that has expanded during a fire. It becomes easy to burn until the outer vertical airtight portion 11c is carbonized in the first gap G1. Further, as compared with the case where the first thermal expansion refractory member 105 is provided in close contact with the outer vertical side airtight portion 11c, the outer vertical side airtight portion 11c is more likely to be burned in the first gap G1. From the above, it becomes easy to suppress the spread of fire. The above-mentioned "third outer spacing OS3" corresponds to the "second spacing" in the claims.

(Structure-Fire spread suppression structure-Second fire spread suppression structure)
Returning to FIG. 2, the second fire spread suppression structure will be described next. In the second fire spread suppression structure, when a fire breaks out on either the outdoor side or the indoor side of the room, the fire goes from either the outdoor side or the indoor side of the room to the other through the second gap G2. It has a structure to prevent the spread of fire. The second fire spread suppression structure includes a door tail side second fire spread suppression structure located on the door tail side, a door end side second fire spread suppression structure located on the door end side, and an upper second fire spread suppression structure located on the upper side. It has a structure and a second fire spread suppression structure on the buttock side located on the buttock side. In the embodiment, the configurations of the door tail side second fire spread suppression structure, the door end side second fire spread suppression structure, the upper side second fire spread suppression structure, and the slip side second fire spread suppression structure are substantially the same. Therefore, in the following, only the configuration of the second fire spread suppression structure on the door tail side will be described. The features of the second fire spread suppression structure on the door tail side are as shown below in the embodiment.

(Structure-Fire spread suppression structure-Second fire spread suppression structure-First feature)
First, regarding the first feature of the door tail side second fire spread suppression structure, as shown in FIGS. 2 and 6, a first inner protrusion 111 and a second inner protrusion 112 are provided in the second gap G2. Has been done.

The first inner protruding portion 111 is a first protruding portion for suppressing the spread of fire, and the second inner protruding portion 112 is a second protruding portion for suppressing the spread of fire. The first inner protruding portion 111 and the second inner protruding portion 112 are plate-like bodies formed of, for example, a refractory material (for example, a steel material), and as shown in FIG. 6, the inside of the second gap G2. IS1 (hereinafter, referred to as "first inner spacing IS1") is provided so as to be spaced apart from each other with respect to the second gap direction described later. Specifically, the first inner protruding portion 111 is provided in the first inner vertical airtight recess 26a of the first opening / closing body 20, and the second inner protruding portion 112 is the second vertical recess of the second opening / closing body 60. It is provided at 63a and at a position away from the inner vertical side airtight portion 25a than the first inner protruding portion 111.

The specific size of the first inner opening / closing portion 111 is arbitrary, but in the embodiment, the first opening / closing body 20 projects toward the second opening / closing body 60 so as not to come into contact with the second opening / closing body 60. It is set to a size that can be used. That is, the length (thickness) of the first inner protruding portion 111 in the left-right direction is set to substantially the same length as the thickness of the second indoor side surface material 80b (or the second indoor side surface material 80b). The length may be set to be thicker or thinner than the thickness of). Further, the length of the first inner protruding portion 111 in the front-rear direction is set to be shorter than the length of the first inner vertical airtight recess 26a in the front-rear direction. Further, the vertical length of the first inner protruding portion 111 is set to be substantially the same as the vertical length of the inner vertical side airtight portion 25a.

The specific size of the second inner opening / closing portion 112 is arbitrary, but in the embodiment, the second opening / closing body 60 does not come into contact with the first opening / closing body 20 toward the first opening / closing body 20. The size is set so that it can be projected. That is, the length (thickness) of the second inner protruding portion 112 in the left-right direction is set to substantially the same length as the thickness of the first inner protruding portion 111 (or the thickness of the first inner protruding portion 111). May be set to a thicker or thinner length). Further, the length of the second inner protruding portion 112 in the front-rear direction is set to be shorter than the length of the second vertical recess 63a in the front-rear direction. Further, the vertical length of the second inner protruding portion 112 is set to be substantially the same as the vertical length of the inner vertical airtight portion 25a.

The method of installing the first inner protrusion 111 and the second inner protrusion 112 is arbitrary, but in the embodiment, it is as follows. That is, first, the first inner projecting portion 111 is provided so as to project from the first opening / closing body 20 toward the second opening / closing body 60 so as not to come into contact with the second opening / closing body 60. As shown in 6, the first inner vertical airtight recess 26a is provided so as to project from the bottom portion toward the outdoor side of the room. Further, the second inner opening / closing portion 112 is provided so as to project from the second opening / closing body 60 toward the first opening / closing body 20 so as not to come into contact with the first opening / closing body 20. Specifically, FIG. As shown, it is provided so as to project from the bottom portion of the second vertical recess 63a toward the indoor side of the room. Further, the first inner protruding portion 111 and the second inner protruding portion 112 are arranged so as to face each other so that the first inner protruding portion 111 and the second inner protruding portion 112 overlap each other when viewed from the second gap direction. Specifically, as shown in FIG. 6, the tip portion of the second inner protrusion 112 and its vicinity are located in the first inner vertical airtight recess 26a, and the first inner side when viewed from the left-right direction. The tip side portions of the protruding portion 111 and the second inner protruding portion 112 are arranged so as to face each other so as to overlap each other. Here, the "second gap direction" means a direction from either the inlet side end portion or the outlet side end portion of the second gap G2 toward the other, and in the embodiment, the second gap G2 The direction from the outdoor end of the room to the indoor end of the room of the second gap G2, and vice versa.

Due to such a first feature, the first inner protruding portion 111 and the second inner protruding portion 112 have an interlaced structure. Therefore, the first inner protruding portion 111 and the second inner protruding portion 112 allow the fire door 1 to be expected. It is possible to suppress the spread of the fire from one side to the other side in the direction, and it is possible to improve the fire prevention performance of the fire door 1. Further, as compared with the case where the thermal expansion fireproof member is provided, the fire door 1 can be manufactured at a low cost, the labor for assembling the fire door 1 can be reduced, and the manufacturability of the fire door 1 can be improved. In particular, since the fire door 1 is a door with a child door, it is possible to suppress the spread of fire from one side to the other side in the expected direction of the door with the child door, and it is possible to improve the fire prevention performance of the door with the child door. it can.

(Structure-Fire spread suppression structure-Second fire spread suppression structure-Second feature)
Returning to FIG. 2, next, regarding the second feature of the door tail side second fire spread suppression structure, the first inner protrusion 111 and the second inner protrusion 112 have a second gap than the inner vertical airtight portion 25a. One or more are arranged at a position on one side and a position on the other side in the direction.

Specifically, as shown in FIGS. 2 and 6, a first inner protruding portion 111 and a second inner protruding portion 112 are arranged at positions on the door end side of the inner vertical side airtight portion 25a. A first inner protruding portion 111 and a second inner protruding portion 112 are arranged at positions on the door tail side of the inner vertical side airtight portion 25a.

In this case, the width of the first inner space IS1 is arbitrary, but in the embodiment, the first inner protrusion 111 and the second inner protrusion 111 located on the door tail side or the door tip side of the inner vertical side airtight portion 25a. The width of the first inner space IS1 with the inner protrusion 112 is set shorter than the width W2 of the second gap G2. Specifically, as shown in FIG. 6, only the width of the first inner distance IS1 between the first inner protrusion 111 and the second inner protrusion 112 located on the door end side of the inner vertical airtight portion 25a is set. , The width of the second gap G2 is set to be shorter than the width W2. As a result, compared to the case where the width of the first inner space IS1 is made longer than the width W2 of the second gap G2, it is difficult for the fire flame to flow in from one side to the other side in the expected direction of the fire door 1. Therefore, it becomes easy to suppress the spread of the fire. However, the present invention is not limited to this, and for example, the width of the first inner space IS1 may be set longer (or the same) than the width W1 of the first gap G1. The above-mentioned "first inner spacing IS1" corresponds to the "first spacing" in the claims.

Further, the width of the gap IS2 (hereinafter, referred to as "second inner spacing IS2") between the second overlapping portion D2 of the frame body 10 and the first inner protruding portion 111 or the second inner protruding portion 112 is arbitrary. In the embodiment, from the width of the second inner space IS2 between the second overlapping portion D2 and the second inner protruding portion 112 located on the door tail side of the inner vertical side airtight portion 25a, or from the inner vertical side airtight portion 25a. The width of the second inner distance IS2 between the second overlapping portion D2 and the second inner protruding portion 112 located on the door end side is set shorter than the width W2 of the second gap G2. Specifically, as shown in FIG. 6, only the width of the second inner space IS2 between the second overlapping portion D2 and the second inner protruding portion 112 located on the door tail side of the inner vertical side airtight portion 25a is set. The width of the second gap G2 is set to be shorter than the width W2. Here, the "second overlapping portion D2" refers to the side wall of the first inner vertical airtight recess 26a of the outdoor side portion of the room in the first opening / closing body 20 (specifically, the vertical side interlocking portion 24a). It means a portion formed so as to overlap with the first inner protruding portion 111 or the second inner protruding portion 112 when viewed from the second gap direction. As a result, compared to the case where the width of the second inner space IS2 is made longer than the width W2 of the second gap G2, it is difficult for the fire flame to flow in from one side to the other side in the expected direction of the fire door 1. Therefore, it becomes easy to suppress the spread of the fire. However, the present invention is not limited to this, and for example, the width of the second inner space IS2 may be set longer (or the same) than the width W2 of the second gap G2 (the second door end side according to the embodiment). The fire spread suppression structure, the upper second fire spread suppression structure, and the second fire spread suppression structure on the slip side follow the same settings). The above-mentioned "second inner spacing IS2" corresponds to the "third spacing" in the claims, and the "second overlapping portion D2" corresponds to the "overlapping portion" in the claims.

Due to such a second feature, the first inner protruding portion 111, the second inner protruding portion 112, the first opening / closing body 20, and the second opening / closing body 60 can surround the inner vertical airtight portion 25a and are fully closed. When a fire breaks out in the vicinity of the fire door 1 in this state, it is possible to prevent the flame generated from the inner vertical airtight portion 25a from coming out to the outside of the second gap G2. Further, since the second overlapping portion D2 and the second inner protruding portion 112 have an interlaced structure, the second overlapping portion D2 and the second inner protruding portion 112 move the fire door 1 from one side to the other in the expected direction. It becomes easier to prevent the fire from spreading.

(Structure-Fire spread suppression structure-Second fire spread suppression structure-Third feature)
Returning to FIG. 2, next, regarding the third feature of the door tail side second fire spread suppression structure, as shown in FIGS. 2 and 6, the first inner recess 113 and the second inner side are contained in the second gap G2. A recess 114 is provided.

(Structure-Fire spread suppression structure-Second fire spread suppression structure-Third feature-First inner recess)
The first inner recess 113 is a first recess for accommodating the inner vertical airtight portion 25a. The first inner recess 113 is, for example, a plate-like body formed of a refractory material (for example, a steel material or the like), and specifically, as shown in FIG. 6, is different from the first opening / closing body 20. It is formed on the body, is provided at the bottom of the first inner vertical airtight recess 26a of the vertical side interlocking portion 24a, and is provided so as to accommodate the inner vertical airtight portion 25a.

The specific configuration of the first inner recess 113 is arbitrary, but in the embodiment, the side wall portion of the first inner recess 113 is either the first inner protrusion 111 or the second inner protrusion 112. It is formed as one side, and specifically, as shown in FIG. 6, the side wall portion on the door tail side and the side wall portion on the door tip side are formed as the first inner protruding portion 111. As a result, the side wall portion of the first inner recess 113 can be formed as either the first inner protrusion 111 or the second inner protrusion 112, and the first inner recess 113 and the first inner protrusion 111 or the second inner protrusion 112 can be formed. The number of parts of the fire door 1 can be reduced as compared with the case where any one of the portions 112 is provided separately.

(Structure-Fire spread suppression structure-Second fire spread suppression structure-Third feature-Second inner recess)
The second inner recess 114 is a second recess for covering the first inner recess 113 and the inner vertical airtight portion 25a. The second inner recess 114 is, for example, a plate-like body formed of a refractory material (for example, a steel material or the like), and specifically, as shown in FIG. 6, is different from the second opening / closing body 60. It is formed on the body and is provided at the bottom of the second vertical recess 63a of the second opening / closing body 60, and is provided so as to cover the first inner recess 113 and the inner vertical airtight portion 25a from the outdoor side of the room. There is. Further, a plate-shaped second contact portion 114a that contacts the inner vertical side airtight portion 25a is provided at the bottom portion of the second inner recess 114.

The specific configuration of the second inner recess 114 is arbitrary, but in the embodiment, the side wall portion of the second inner recess 114 is either the first inner protrusion 111 or the second inner protrusion 112. It is formed as the other, and specifically, as shown in FIG. 6, the side wall portion on the door tail side and the side wall portion on the door tip side are formed as the second inner protruding portion 112. As a result, the side wall portion of the second inner recess 114 can be formed as either the first inner protrusion 111 or the second inner protrusion 112, and the second inner recess 114 and the first inner protrusion 111 or the second inner protrusion 112 can be formed. The number of parts of the fire door 1 can be reduced as compared with the case where any one of the portions 112 is provided separately.

Due to such a third feature, the number of parts of the fire door 1 can be reduced when the first inner recess 113 and the second inner recess 114 are provided, so that the manufacturing cost of the fire door 1 and the labor for assembling can be reduced. Is possible.

(Structure-Fire spread suppression structure-Second fire spread suppression structure-Fourth feature)
Returning to FIG. 2, subsequently, regarding the fourth feature of the door tail side second fire spread suppression structure, as shown in FIGS. 2 and 6, a second thermal expansion refractory member 115 is provided in the second gap G2. Has been done.

When a fire breaks out around the fire door 1 in the fully closed state, the second thermal expansion refractory member 115 expands with the heat of the fire to open the second gap G2. It is a thermal expansion fireproof member for closing. The second thermal expansion refractory member 115 is attached to the second opening / closing body 60 in the second gap G2. Specifically, as shown in FIG. 6, the second heat is formed in a notch (not shown) formed in a part of the second chamber outer surface material 80a or the second chamber side surface material 80b of the second opening / closing body 60. An expansion fireproof member 115 is arranged, and the arranged second thermal expansion fireproof member 115 is connected to the second opening / closing frame 70 of the second opening / closing body 60 with double-sided tape, an adhesive, screws, or the like.

The method of installing the second thermal expansion refractory member 115 is arbitrary, but in the embodiment, it is installed (arranged) at a position on one side or a position on the other side in the second gap direction with respect to the inner vertical side airtight portion 25a. ing. Specifically, as shown in FIG. 6, at a position on one side and a position on the other side in the second gap direction (positions on the door tail side and the door tip side in FIG. 6) with respect to the inner vertical side airtight portion 25a. The airtight portion 25a on the inner vertical side and the space IS3 (hereinafter referred to as "third inner space IS3") are separated from each other.

Due to such a fourth feature, the second gap G2 can be closed by the second thermal expansion refractory member 115 in the event of a fire, and the inner vertical side airtight portion 25a is compared with the case where the second thermal expansion refractory member 115 is not provided. It is possible to prevent the flame generated from the above from coming out to the outside of the second gap G2. In particular, since the inner vertical airtight portion 25a and the third inner space IS3 are arranged at one side position and the other side position in the second gap direction from the inner vertical side airtight portion 25a, the second thermal expansion Compared with the case where the fireproof member 115 is provided only at a position on one side of the inner vertical airtight portion 25a in the second gap G2 in the direction of the second gap, the fireproof member 115 is blocked by the second thermal expansion fireproof member 115 that has expanded during a fire. It becomes easy to burn until the inner vertical airtight portion 25a is carbonized in the second gap G2. Further, as compared with the case where the second thermal expansion refractory member 115 is provided in close contact with the inner vertical side airtight portion 25a, the inner vertical side airtight portion 25a is more likely to be burned in the second gap G2. From the above, it becomes easier to suppress the spread of fire. The above-mentioned "third inner spacing IS3" corresponds to the "second spacing" in the claims.

(Action of fire door)
The operation of the fire door 1 configured in this way will be described. The action of the fire door 1 is roughly divided into the action when a fire breaks out on the indoor side of the room and the action when a fire breaks out on the outdoor side of the room, but these actions are substantially the same. In the following, only the action when a fire breaks out on the indoor side of the room will be described.

For example, when a fire breaks out on the indoor side of a room in a fully closed state, if a part of the flame of the fire tries to flow into the outdoor side of the room through the first gap G1, the first fire spread on the door tail side is suppressed. The room of the flame room by the first outer protrusion 101 and the second outer protrusion 102 of the structure, the first fire spread suppression structure on the door end side, the first fire spread suppression structure on the upper side, and the first fire spread suppression structure on the buttock side, respectively. The inflow to the outside is blocked. Further, even if a flame is generated from the outer vertical airtight portion 11c or the outer horizontal airtight portion 13c due to the heat of the fire, the first is higher than the outer vertical airtight portion 11c or the outer horizontal airtight portion 13c in which the flame is generated. The flame is formed by the first outer protruding portion 101 and the second outer protruding portion 102 arranged at one side position and the other side position in the gap direction, and the first thermal expansion fireproof member 105 expanded by the heat of the fire. Is prevented from coming out of the first gap G1 (particularly, the outside of the room). From these facts, it is suppressed that the fire spreads from the indoor side of the room to the outdoor side of the room.

Further, when the above fire occurs, if another part of the flame of the fire tries to flow into the outdoor side of the room through the second gap G2, the second fire spread suppression structure on the door tail side and the second on the door end side The first inner protrusion 111 and the second inner protrusion 112 of the two fire spread suppression structure, the upper second fire spread suppression structure, and the second fire spread suppression structure on the buttock side hinder the inflow of the flame to the outdoor side of the room. Be done. Further, even if a flame is generated from the inner vertical side airtight portion 25a or the inner horizontal side airtight portion 25b due to the heat of the fire, it is second than the inner vertical side airtight portion 25a or the inner horizontal side airtight portion 25b where the flame is generated. The flame is formed by the first inner protruding portion 111 and the second inner protruding portion 112 arranged at one side position and the other side position in the gap direction, and the second thermal expansion fireproof member 115 expanded by the heat of the fire. Is prevented from coming out of the second gap G2 (particularly, the outside of the room). From these facts, it is suppressed that the fire spreads from the indoor side of the room to the outdoor side of the room.

(Effect of embodiment)
As described above, according to the embodiment, the fire-resistant first outer protrusion 101 provided in the first gap G1 formed between the frame body 10 and the first opening / closing body 20 is the frame. A first outer protrusion 101 that protrudes from either the body 10 or the first opening / closing body 20 toward the other so as not to contact the other, and the first outer protrusion 101 and the first in the first gap G1. It is a fire-resistant second outer protrusion 102 provided with an outer spacing OS1 apart, and is projected from either the frame body 10 or the first opening / closing body 20 toward one so as not to come into contact with the other. The first outer protrusion 101 and the second outer protrusion 102 are provided with the second outer protrusion 102 so that the first outer protrusion 101 and the second outer protrusion 102 overlap when viewed from the first gap direction. By arranging the 102 so as to face each other, when a fire occurs around the fire prevention door 1 in the fully closed state, the fire prevention door 1 is directed from one side to the other side in the expected direction through the first gap G1. Since it is possible to suppress the spread of the fire, the first outer protrusion 101 and the second outer protrusion 102 have an interlaced structure. Therefore, the first outer protrusion 101 and the second outer protrusion 102 It is possible to suppress the spread of the fire from one side to the other side in the expected direction of the fire prevention door 1, and it is possible to improve the fire prevention performance of the fire prevention door 1. Further, as compared with the case where the thermal expansion fireproof member is provided, the fire door 1 can be manufactured at a low cost, the labor for assembling the fire door 1 can be reduced, and the manufacturability of the fire door 1 can be improved.

Further, it is a fire-resistant first inner protruding portion 111 provided in the second gap G2 formed between the first opening / closing body 20 and the second opening / closing body 60, and is the first opening / closing body 20 or the second opening / closing body 20 or the second. A first inner protrusion 111 that protrudes from one of the opening / closing bodies 60 toward the other so as not to come into contact with the other, and a first inner protrusion 111 and a first inner distance IS1 are separated in the second gap G2. The fire-resistant second inner protruding portion 112 is provided so as to project from either the first opening / closing body 20 or the second opening / closing body 60 toward one side so as not to come into contact with the other. The first inner protruding portion 111 and the second inner protruding portion 112 are mutually provided with the protruding portion 112 so that the first inner protruding portion 111 and the second inner protruding portion 112 overlap each other when viewed from the second gap direction. When a fire occurs around the fire prevention door 1 in the fully closed state, the fire is directed from one side to the other side in the expected direction of the fire prevention door 1 through the second gap G2. Since it is possible to suppress the spread of fire, the first inner protrusion 111 and the second inner protrusion 112 have an interlaced structure. Therefore, the first inner protrusion 111 and the second inner protrusion 112 make the fire prevention door 1 It is possible to suppress the spread of the fire from one side to the other side in the expected direction, and to improve the fire prevention performance of the fire prevention door 1. Further, as compared with the case where the thermal expansion fireproof member is provided, the fire door 1 can be manufactured at a low cost, the labor for assembling the fire door 1 can be reduced, and the manufacturability of the fire door 1 can be improved.

Further, since the fire door 1 includes a door with a child door, it is possible to suppress the spread of fire from one side to the other side in the expected direction of the door with the child door, and to improve the fire prevention performance of the door with the child door. Can be done.

Further, the first protruding portion (first outer protruding portion 101 or first inner protruding portion 111) and the second protruding portion (second outer protruding portion 102 or second inner protruding portion 112) are set in the gap direction (the gap direction) as compared with the airtight means. Since one or more are arranged at one side position and the other side position in the first gap direction or the second gap direction, for example, the first protrusion, the second protrusion, the frame 10, and the opening / closing body (the first). 1 The opening / closing body 20 or the second opening / closing body 60) can surround the periphery of the airtight means, and when a fire breaks out around the fire door 1 in the fully closed state, the flame generated from the airtight means goes out of the gap. Can be suppressed.

Further, since the side wall portion of the first recess (first outer recess 103 or first inner recess 113) is formed as either the first protrusion or the second protrusion, the side wall portion of the first recess is first. It can be formed as either a protruding portion or a second protruding portion, and the number of parts of the fire door 1 can be increased as compared with the case where the first recess and either the first protruding portion or the second protruding portion are provided separately. Can be reduced.

Further, since the side wall portion of the second recess (second outer recess 104 or second inner recess 114) is formed as either the first protrusion or the second protrusion, the side wall portion of the second recess is first. It can be formed as either the protruding portion or the second protruding portion, and the number of parts of the fire door 1 is increased as compared with the case where the second recess and the other of the first protruding portion or the second protruding portion are provided separately. Can be reduced.

Further, since the thermal expansion fireproof member (first thermal expansion fireproof member 105 or second thermal expansion fireproof member 115) is arranged at a position on one side or the other side in the gap direction with respect to the airtight means, thermal expansion occurs in the event of a fire. The gap can be closed by the fireproof member, and the flame generated from the airtight means can be suppressed from coming out of the gap as compared with the case where the thermal expansion fireproof member is not provided.

Further, since the thermal expansion fireproof member is arranged at the position on one side and the position on the other side of the airtight means at a distance of the second gap from the airtight means, the thermal expansion fireproof member is placed in the gap more than the airtight means in the gap. Compared with the case where it is provided only at a position on one side in the direction, it becomes easier to burn until the airtight means is carbonized in the gap closed by the thermal expansion fireproof member expanded at the time of fire. Further, the airtight means can be easily burned in the gap as compared with the case where the thermal expansion refractory member is provided in close contact with the airtight means. From the above, it becomes easy to suppress the spread of the above-mentioned fire.

Further, since the width of the first interval (first outer interval OS1 or first inner interval IS1) is made shorter than the width of the gap, fire prevention is performed as compared with the case where the width of the first interval is made longer than the width of the gap. Since it becomes difficult for the flame of the fire to flow in from one side to the other side in the expected direction of the door 1, it becomes easy to suppress the spread of the fire.

Further, since the width of the third interval (second outer interval OS2 or second inner interval IS2) is made shorter than the width of the gap, fire prevention is performed as compared with the case where the width of the third interval is made longer than the width of the gap. Since it becomes difficult for the flame of the fire to flow in from one side to the other side in the expected direction of the door 1, it becomes easy to suppress the spread of the fire.

[III] Modifications to Each Embodiment The embodiments of the present invention have been described above, but the specific configuration and means of the present invention are the scope of the technical idea of each invention described in the claims. It can be arbitrarily modified and improved within. Hereinafter, such a modification will be described.

(About the problem to be solved and the effect of the invention)
First, the problem to be solved by the invention and the effect of the invention are not limited to the above-mentioned contents, and the present invention solves a problem not described above or an effect not described above. It can also be played, and it may solve only some of the tasks described or play only some of the effects described.

(About shape, numerical value, structure, time series)
With respect to the components illustrated in the embodiments and drawings, the shapes, numerical values, or the interrelationships of the structures or time series of the plurality of components shall be arbitrarily modified and improved within the scope of the technical idea of the present invention. Can be done.

(About the gap direction)
In the above embodiment, it has been described that the first gap direction corresponds to the direction from the outdoor end of the room of the first gap G1 toward the indoor end of the room of the first gap G1 and vice versa. However, the direction is not limited to this, for example, from the upper or lower end of the room of the first gap G1 toward the indoor end or the outdoor end of the room of the first gap G1, or vice versa. (Note that the same applies to the second gap direction).

(About fire doors)
In the above embodiment, it has been described that the fire door 1 is a door with a child door, but the present invention is not limited to this. For example, it may be a double door with a first opening / closing body 20 and a second opening / closing body 60 (or one side may be a door without a child door). In this case, the first fire spread suppressing structure is applied to the gap formed between the first opening / closing body 20 and the frame body 10. Further, the second fire spread suppressing structure is applied to the gap formed between the first opening / closing body 20 and the second opening / closing body 60. Alternatively, it may be a single-opening type hinged door (or a single-opening type sliding door) including one opening / closing body. In this case, the first fire spread suppressing structure is applied to the gap formed between the opening / closing body and the frame body 10.

Further, in the above embodiment, it has been explained that the fire door 1 is a fire door, but the present invention is not limited to this, and for example, a shield capable of suppressing the heat of fire from being conducted to the evacuation passage side through the fire door 1. It may be a hot door.

Further, in the above embodiment, it has been described that the fire door 1 includes an outer vertical side airtight portion 11c, an outer horizontal side airtight portion 13c, an inner vertical side airtight portion 25a, and an inner horizontal side airtight portion 25b. Not limited to this, for example, the outer vertical side airtight portion 11c, the outer horizontal side airtight portion 13c, the inner vertical side airtight portion 25a, and the inner horizontal side airtight portion 25b may be omitted. In this case, for example, the first outer protrusion 101 and the second outer protrusion 102 of the door tail side first fire spread suppression structure may be arranged at any position in the first gap G1, and as an example, At the end of the first gap G1 on the prospective direction side (or a position in the vicinity thereof), the first gap G1 may be spaced apart from each other in the first gap direction (specifically, the front-rear direction) ( The same applies to the first outer protrusion 101 and the second outer protrusion 102 of the other first fire spread suppression structure, and the first inner protrusion 111 and the second inner protrusion 112 of various second fire spread suppression structures. ).

Further, in the above embodiment, it has been explained that the fire door 1 is provided so that the surface material 50a outside the first room is located outside the room, but the present invention is not limited to this, and for example, the outside of the first room. The surface material 50a may be provided so as to be located on the indoor side of the room.

(About the first opening / closing body and the second opening / closing body)
In the above embodiment, the first opening / closing body 20 includes the first outer opening / closing body frame 30, the first inner opening / closing frame 40, the first chamber outer surface material 50a, and the first chamber side surface material 50b. I explained, but it is not limited to this. For example, in addition to these components, a core material to be filled inside the first opening / closing body 20 may be further provided (the same applies to the second opening / closing body 60).

(About fire spread suppression structure)
In the above embodiment, it has been described that the fire spread suppression structure includes the first fire spread suppression structure and the second fire spread suppression structure, but the present invention is not limited to this. For example, if the desired fire protection performance can be maintained, only one of the first fire spread suppression structure and the second fire spread suppression structure may be omitted.

In the above embodiment, it has been described that the fire spread suppressing structure includes the first thermal expansion refractory member 105 and the second thermal expansion refractory member 115, but the present invention is not limited to this, and for example, the first thermal expansion refractory member 105 and At least one of the second thermal expansion refractory members 115 may be omitted.

(About the first fire spread suppression structure and the second fire spread suppression structure)
In the above embodiment, the first fire spread suppression structure includes a door tail side first fire spread suppression structure, a door end side first fire spread suppression structure, an upper first fire spread suppression structure, and a slip side first fire spread suppression structure. I explained that there is, but it is not limited to this. For example, if the desired fire prevention performance can be maintained, at least one of the door tail side first fire spread suppression structure, the door end side first fire spread suppression structure, the upper side first fire spread suppression structure, and the slip side first fire spread suppression structure. Or one may be omitted. Further, in the above embodiment, the second fire spread suppression structure includes a door tail side second fire spread suppression structure, a door end side second fire spread suppression structure, an upper second fire spread suppression structure, and a slip side second fire spread suppression structure. I explained that it is equipped, but it is not limited to this. For example, if the desired fire prevention performance can be maintained, at least one of the door tail side second fire spread suppression structure, the door end side second fire spread suppression structure, the upper side second fire spread suppression structure, and the slip side second fire spread suppression structure. Or one may be omitted.

(About the first fire spread suppression structure on the door butt side)
In the above embodiment, the first outer protrusion 101 and the second outer protrusion 102 are arranged one at a position on one side and one at a position on the other side in the first gap direction with respect to the outer vertical side airtight portion 11c. I explained that it is done, but it is not limited to this. For example, one may be arranged only at one of the positions on one side or the other side in the first gap direction with respect to the outer vertical side airtight portion 11c. Alternatively, two or more may be arranged at a position on one side and a position on the other side in the first gap direction with respect to the outer vertical side airtight portion 11c (note that the first inner protruding portion 111 and the second inner protruding portion 111). The same applies to 112).

Further, in the above embodiment, it has been described that the outer vertical side airtight portion 11c, the first outer protrusion 101, and the first outer recess 103 are provided in the vertical frame side airtight recess 11e, but the present invention is not limited to this. For example, it may be provided in the first outer vertical recess 23a. In this case, the second outer protrusion 102, the second outer recess 104, and the first contact portion 104a are provided in the vertical frame side airtight recess 11e.

Further, in the above embodiment, it has been described that the side wall portion of the first outer recess 103 is formed as the first outer protrusion 101, but the present invention is not limited to this. For example, when the outer vertical side airtight portion 11c is housed in the second outer concave portion 104, it may be formed as the second outer protruding portion 102. Alternatively, the side wall portion of the first outer recess 103 may be formed separately from the first outer protrusion 101 and the second outer protrusion 102. In these cases, for example, the first outer protrusion 101 or the second outer protrusion 102 may be integrally formed with the door tail side vertical frame member 11 or the first opening / closing body 20. Further, in the above embodiment, it has been described that the side wall portion of the first inner recess 113 is formed as the first inner protrusion 111, but the present invention is not limited to this. For example, when the inner vertical side airtight portion 25a is housed in the second inner recess 114, it may be formed as the second inner protrusion 112. Alternatively, the side wall portion of the first inner recess 113 may be formed separately from the first inner protrusion 111 and the second inner protrusion 112. In these cases, for example, the first inner protrusion 111 or the second inner protrusion 112 may be formed integrally with the first opening / closing body 20 or the second opening / closing body 60.

Further, in the above embodiment, it has been described that the side wall portion of the second outer recess 104 is formed as the second outer protrusion 102, but the present invention is not limited to this. For example, when the outer vertical side airtight portion 11c is housed in the second outer concave portion 104, it may be formed as the first outer protruding portion 101. Alternatively, the side wall portion of the second outer recess 104 may be formed separately from the first outer protrusion 101 and the second outer protrusion 102. In these cases, for example, the first outer protrusion 101 or the second outer protrusion 102 may be integrally formed with the door tail side vertical frame member 11 or the first opening / closing body 20. Further, in the above embodiment, it has been described that the side wall portion of the first inner recess 113 is formed as the first inner protrusion 111, but the present invention is not limited to this. For example, when the inner vertical side airtight portion 25a is housed in the second inner recess 114, it may be formed as the second inner protrusion 112. Alternatively, the side wall portion of the second inner recess 114 may be formed separately from the first inner protrusion 111 and the second inner protrusion 112. In these cases, for example, the first inner protrusion 111 or the second inner protrusion 112 may be formed integrally with the first opening / closing body 20 or the second opening / closing body 60.

Further, in the above embodiment, it has been described that the first thermal expansion refractory member 105 is provided at a position on one side and a position on the other side in the first gap direction with respect to the outer vertical side airtight portion 11c. However, for example, the airtight portion 11c on the outer vertical side may be provided only at a position on one side in the first gap direction (the same applies to the second thermal expansion refractory member 115).

Further, in the above embodiment, it has been described that the first thermal expansion refractory member 105 is provided so as to separate the outer vertical side airtight portion 11c and the third outer space OS3, but the present invention is not limited to this, and for example, the outer vertical side It may be provided in close contact with the side airtight portion 11c (the same applies to the second thermal expansion refractory member 115).

(Additional note)
The fire door of Appendix 1 is a fire door provided at an opening of a building, and includes a frame provided at the periphery of the opening and at least one or more opening / closing bodies for opening / closing the opening. A fire door, which is a fire-resistant first protruding portion provided in a gap formed between the frame body and the opening / closing body, and is provided from either the frame body or the opening / closing body. It is a first protruding portion that protrudes toward the other so as not to come into contact with the other, and a fire-resistant second protruding portion that is provided in the gap with a first distance from the first protruding portion. A second protruding portion that protrudes from either the frame or the opening / closing body toward one side so as not to come into contact with the other, and is provided at the inlet side end or the outlet side end of the gap. The first protrusion and the second protrusion face each other so that the first protrusion and the second protrusion overlap when viewed from the gap direction, which is the direction from one of them to the other. By arranging the arrangement, when a fire breaks out in the vicinity of the fire door in a fully closed state in which the opening is fully closed by the opening / closing body, the fire door is placed from one side to the other in the expected direction through the gap. It was made possible to prevent the fire from spreading toward.

The fire door of Appendix 2 is a fire door provided at an opening of a building, and is a fire door provided with a plurality of opening / closing bodies for opening / closing the opening, and is formed between the opening / closing bodies. A fire-resistant first protruding portion provided in the gap, in the first protruding portion protruding from one of the opening / closing bodies toward the other so as not to come into contact with the other, and in the gap. It is a fire-resistant second projecting portion provided at a distance from the first projecting portion, and is a second projecting portion of the opening / closing bodies that protrudes from any one of the opening / closing bodies toward one so as not to come into contact with the other. The first protrusion and the second protrusion when viewed from the gap direction, which is a direction from either one of the inlet side end portion or the outlet side end portion of the gap toward the other. By arranging the first protruding portion and the second protruding portion so as to overlap each other so that the openings are fully closed by the plurality of opening and closing bodies, the periphery of the fire door is fully closed. When a fire breaks out in the fire door, it is possible to prevent the fire from spreading from one side to the other side in the expected direction of the fire door through the gap.

The fire door of Appendix 3 is the fire door described in Appendix 2, and the fire door includes a double-opening hinged door or a door with a child door.

The fire door of Appendix 4 is an airtight means provided in the gap in the fire door according to any one of Appendix 1 to 3, and is in close contact with the opening / closing body or the frame body in the fully closed state. As a result, an airtight means for increasing the airtightness of the gap is provided, and the first protruding portion and the second protruding portion are placed at a position on one side and a position on the other side of the airtight means in the gap direction, respectively. One or more were placed.

The fire door of Appendix 5 includes a first recess for accommodating the airtight means in the fire door according to Appendix 4, and the side wall portion of the first recess is formed with the first protrusion or the second protrusion. Formed as either one of.

The fire door of Appendix 6 includes the first recess and the second recess provided so as to cover the airtight means in the fire door of Appendix 5, and the side wall portion of the second recess is projected from the first protrusion. It was formed as either a portion or the second protruding portion.

The fire door of Appendix 7 is a thermal expansion refractory member provided in the gap in the fire door according to any one of Appendix 4 to 6, and a fire occurs around the fire door in the fully closed state. When the thermal expansion refractory member expands due to the heat of the fire when it occurs, the thermal expansion refractory member is provided to close the gap, and the thermal expansion refractory member is placed in the gap direction rather than the airtight means. It was placed at one side or the other side.

The fire door of Appendix 8 is the fire door according to Appendix 7, in which the thermal expansion fireproof member has a second distance from the airtight means at a position on one side and a position on the other side of the airtight means in the gap direction. Arranged apart.

As for the fire door of Appendix 9, in the fire door according to any one of Appendix 1 to 8, the width of the first interval is made shorter than the width of the gap.

The fire door of Appendix 10 is the fire door according to any one of Appendix 1 to 9, wherein the frame or the opening / closing body is separated from the first protrusion or the second protrusion by a third interval. It is a fire-resistant overlapping portion provided, and has an overlapping portion formed so as to overlap the first protruding portion or the second protruding portion when viewed from the gap direction, and has a width of the third interval. , Shorter than the width of the gap.

(Effect of appendix)
According to the fireproof door described in Appendix 1, it is a fire-resistant first protruding portion provided in a gap formed between the frame body and the opening / closing body, and is either the frame body or the opening / closing body. A first projecting portion that protrudes from the other toward the other so as not to come into contact with the other, and a fire-resistant second projecting portion that is provided in the gap at a distance from the first projecting portion. A second projecting portion is provided so as to project from either the body or the opening / closing body toward one side so as not to come into contact with the other, and the first projecting portion and the second projecting portion overlap when viewed from the gap direction. As described above, by arranging the first protruding portion and the second protruding portion so as to face each other, when a fire breaks out in the vicinity of the fire prevention door in the fully closed state in which the opening is fully closed by the opening / closing body, a gap is provided. Since it is possible to suppress the spread of the fire from one side to the other side in the expected direction of the fire prevention door through the above, the first protruding portion and the second protruding portion have an interlaced structure. The first protruding portion and the second protruding portion can prevent the fire from spreading from one side to the other side in the expected direction of the fire prevention door, and can improve the fire prevention performance of the fire prevention door. Further, as compared with the case where the thermal expansion fireproof member is provided, the fire door can be manufactured at a low cost, the labor for assembling the fire door can be reduced, and the manufacturability of the fire door can be improved.

According to the fireproof door described in Appendix 2, it is a fire-resistant first protrusion provided in a gap formed between the opening / closing bodies, and the opening / closing bodies are directed from one of the opening / closing bodies toward the other. A first protruding portion that protrudes so as not to come into contact with the other, and a fire-resistant second protruding portion that is provided in a gap with a first protrusion and a first gap, and is either of the opening / closing bodies. The first protruding portion is provided with a second protruding portion protruding from the other toward one side so as not to come into contact with the other, and the first protruding portion and the second protruding portion overlap when viewed from the gap direction. And by arranging the second protrusions facing each other, when a fire breaks out around the fireproof door in the fully closed state, the fireproof door is moved from one side to the other side through a gap in the expected direction. Since it is possible to suppress the spread of the fire toward the fire, the first protrusion and the second protrusion have an interlaced structure. Therefore, the first protrusion and the second protrusion make one of the expected directions of the fire prevention door. It is possible to prevent the fire from spreading from one side to the other, and to improve the fire protection performance of the fire protection door. Further, as compared with the case where the thermal expansion fireproof member is provided, the fire door can be manufactured at a low cost, the labor for assembling the fire door can be reduced, and the manufacturability of the fire door can be improved.

According to the fire door described in Appendix 3, since the fire door includes a double door hinged door or a door with a child door, one side to the other side in the expected direction of the double door hinged door or the door with a child door. It is possible to suppress the spread of the fire toward, and it is possible to improve the fire prevention performance of the double door type hinged door or the door with a child door.

According to the fire door described in Appendix 4, one or more first protrusions and second protrusions are arranged at a position on one side and a position on the other side in the gap direction with respect to the airtight means, for example. The circumference of the airtight means can be surrounded by the 1-protruding portion, the 2nd protruding portion, the frame body, and the opening / closing body, and when a fire breaks out around the fire door in the fully closed state, the flame generated from the airtight means is in the gap. It is possible to suppress going out.

According to the fire door described in Appendix 5, the side wall portion of the first recess is formed as either the first protrusion or the second protrusion, so that the side wall portion of the first recess is the first protrusion or the first protrusion. It can be formed as either one of the two protrusions, and the number of parts of the fire door can be reduced as compared with the case where the first recess and either the first protrusion or the second protrusion are provided separately.

According to the fire door described in Appendix 6, the side wall portion of the second recess is formed as either the first protrusion or the second protrusion, so that the side wall portion of the second recess is the first protrusion or the first protrusion. It can be formed as either one of the two protrusions, and the number of parts of the fire door can be reduced as compared with the case where the second recess and the other one of the first protrusion or the second protrusion are provided separately.

According to the fire door described in Appendix 7, since the thermal expansion refractory member is arranged at a position on one side or the other side in the gap direction with respect to the airtight means, the gap can be closed by the thermal expansion refractory member in the event of a fire. It is possible to prevent the flame generated from the airtight means from coming out of the gap as compared with the case where the thermal expansion refractory member is not provided.

According to the fire door described in Appendix 8, the thermal expansion fireproof member is arranged at a position on one side and a position on the other side in the gap direction with respect to the airtight means at a second distance from the airtight means. Compared with the case where the member is provided only at a position on one side of the gap direction with respect to the airtight means in the gap, it becomes easier to burn until the airtight means is carbonized in the gap closed by the thermal expansion refractory member expanded at the time of fire. Further, the airtight means can be easily burned in the gap as compared with the case where the thermal expansion refractory member is provided in close contact with the airtight means. From the above, it becomes easy to suppress the spread of the above-mentioned fire.

According to the fire door described in Appendix 9, since the width of the first interval is shorter than the width of the gap, the expected direction of the fire door is compared with the case where the width of the first interval is longer than the width of the gap. Since it becomes difficult for the flame of the fire to flow in from one side to the other side, it becomes easy to suppress the spread of the fire.

According to the fire door described in Appendix 10, since the width of the third interval is shorter than the width of the gap, the expected direction of the fire door is compared with the case where the width of the third interval is longer than the width of the gap. Since it becomes difficult for the flame of the fire to flow in from one side to the other side, it becomes easy to suppress the spread of the fire.

1 Fireproof door 2 Frame 3 Opening 3a 1st opening 3b 2nd opening 10 Frame 11 Door tail side vertical frame material 11a Vertical frame material body 11b Fixing material 11c Outer vertical side airtight part 11d Vertical frame side recess 11e Vertical frame Side airtight recess 12 Door end side vertical frame material 13 Upper horizontal frame material 13a Horizontal frame material body 13b Fixing material 13c Outer horizontal side airtight part 13d Horizontal frame side recess 13e Horizontal frame side airtight recess 14 Scraping side horizontal frame material 20 1st Opening / Closing Body 21 1st Handle Part 22 1st Locking Device 23a 1st Outer Vertical Recess 23b 1st Outer Horizontal Recess 24a Vertical Side Airtight Part 24b Horizontal Side Airtight Part 25a Inner Vertical Airtight Part 25b 26a 1st inner vertical airtight recess 26b 1st inner lateral airtight recess 30 1st outer opening / closing body frame 31 Door tail side 1st outer longitudinal force bone 32 Door tip side 1st outer longitudinal force bone 33 Upper 1st outer lateral force bone 34 Lower 1st outer lateral force bone 40 1st medial opening / closing body frame 41 Door tail side 1st inner longitudinal force bone 42 Door tip side 1st inner longitudinal force bone 43 Upper 1st inner lateral force bone 44 Lower 1st inner lateral force bone 44 Force bone 50a 1st chamber outer surface material 50b 1st chamber side surface material 60 2nd opening / closing body 61 2nd handle 62 2nd locking device 63a 2nd vertical recess 63b 2nd horizontal recess 70 2nd opening / closing body frame 71 Door tail Side 2nd longitudinal force bone 72 Door side 2nd longitudinal force bone 73 Upper 2nd lateral force bone 74 Lower 2nd lateral force bone 80a 2nd room outer surface material 80b 2nd room side surface material 91 1st hinge part 92 Second hinge part 92a Upper second hinge part 92b Lower second hinge part 92c Falling prevention part 101 First outer protrusion 102 Second outer protrusion 103 First outer recess 104 Second outer recess 104a First contact part 105 First Thermal Expansion Fireproof Member 111 First Inner Projection 112 Second Inner Projection 113 First Inner Recess 114 Second Inner Recess 114a Second Contact 115 Second Thermal Expansion Fireproof Member D1 First Overlapping Part D2 Second Overlap Part G1 1st gap G2 2nd gap OS1 1st outer space OS2 2nd outer space OS3 3rd outer space IS1 1st inner space IS2 2nd inner space IS3 3rd inner space W1 1st gap width W2 2nd gap width

Claims (10)

A fire door provided at an opening of a building, which is a fire door including a frame provided on the periphery of the opening and at least one opening / closing body for opening / closing the opening.
It is a fire-resistant first protruding portion provided in a gap formed between the frame body and the opening / closing body, and is the other of the frame body or the opening / closing body toward the other. The first protruding part that is projected so as not to come into contact with
A fire-resistant second protrusion provided in the gap at a distance from the first protrusion, and in contact with the frame or the opening / closing body from the other to the other. A second protruding portion that is projected so as not to be provided,
The first protruding portion and the second protruding portion overlap each other when viewed from the gap direction, which is the direction from either the inlet side end portion or the outlet side end portion of the gap toward the other. By arranging the 1-protruding portion and the 2nd protruding portion so as to face each other, when a fire breaks out in the vicinity of the fire door in a fully closed state in which the opening is fully closed by the opening / closing body, the gap It is possible to suppress the spread of the fire from one side to the other side in the expected direction of the fire door.
Fire door. A fire door provided at an opening of a building, which is a fire door provided with a plurality of opening / closing bodies for opening / closing the opening.
It is a fire-resistant first protruding portion provided in a gap formed between the opening / closing bodies, and is projected from one of the opening / closing bodies toward the other so as not to come into contact with the other. The first protrusion and
It is a fire-resistant second protrusion provided in the gap so as to be separated from the first protrusion by a first interval, so as not to come into contact with the opening / closing body from any one of the other to one. With a second protruding portion that protrudes,
The first protruding portion and the second protruding portion overlap each other when viewed from the gap direction, which is the direction from either the inlet side end portion or the outlet side end portion of the gap toward the other. By arranging the 1 protrusion and the second protrusion so as to face each other, when a fire breaks out in the vicinity of the fire door in a fully closed state in which the opening is fully closed by the plurality of opening / closing bodies. It is possible to suppress the spread of the fire from one side to the other side in the expected direction of the fire door through the gap.
Fire door. The fire door includes a double door, or a door with a child door.
The fire door according to claim 2. It is an airtight means provided in the gap, and is provided with an airtight means for increasing the airtightness of the gap by coming into close contact with the opening / closing body or the frame body in the fully closed state.
One or more of the first protruding portion and the second protruding portion are arranged at a position on one side and a position on the other side in the gap direction with respect to the airtight means.
The fire door according to any one of claims 1 to 3. A first recess for accommodating the airtight means is provided.
The side wall portion of the first recess was formed as either the first protrusion or the second protrusion.
The fire door according to claim 4. The first recess and the second recess provided so as to cover the airtight means are provided.
The side wall portion of the second recess was formed as either the first protrusion or the second protrusion.
The fire door according to claim 5. It is a thermal expansion fireproof member provided in the gap, and when a fire breaks out around the fire door in the fully closed state, the thermal expansion fireproof member expands due to the heat of the fire, so that the gap Equipped with a thermal expansion fireproof member to close the
The thermal expansion refractory member was arranged at a position on one side or a position on the other side in the gap direction with respect to the airtight means.
The fire door according to any one of claims 4 to 6. The thermal expansion refractory member was arranged at a position on one side and a position on the other side in the gap direction with respect to the airtight means at a second distance from the airtight means.
The fire door according to claim 7. The width of the first interval is made shorter than the width of the gap.
The fire door according to any one of claims 1 to 8. The frame body or the opening / closing body is a fire-resistant overlapping portion provided at a third distance from the first protruding portion or the second protruding portion, and the first protruding portion when viewed from the gap direction. Alternatively, it has an overlapping portion formed so as to overlap the second protruding portion, and has an overlapping portion.
The width of the third interval is made shorter than the width of the gap.
The fire door according to any one of claims 1 to 9.

Images