JP6978342B2 - Heat shield door - Google Patents

Description

The present invention relates to a heat shield door.

In recent years, fire doors are not limited to fire protection performance, but there is a tendency that heat insulation performance is required to prevent heat transfer from the fire side to the non-fire side, which is harmful at the time of evacuation.

A fire door is composed of a door body and a door frame. Generally, the structure of the door body consists of a surface material, a rib and a middle bone, and the ribs are fixed to the surface material on all four sides in the height direction. The middle bones extending in the width direction are provided at equal intervals in the width direction. Furthermore, in order to impart heat shielding performance, it is conceivable to fill the inside of the door body with a heat insulating material (rock wool, etc.) or a fireproof material (calcium silicate plate) as a core material. Since the middle bone is made of metal (typically made of steel), heat may be transferred from the fire side to the non-fire side through the force bone and the middle bone. The fire door described in Patent Document 1 and the heat shield door described in Patent Document 2 also have a core, and have a structure in which heat is easily transmitted through the core.
JP-A-2016-166503 Patent No. 5399957

An object of the present invention is to prevent heat from being transmitted through the middle bone from the heated surface side to the non-heated surface side by making it possible to eliminate the middle bone in the heat shield door.

The technical means adopted by the present invention for solving such a problem is
With a four-circle frame,
The surface material fixed to the four-circle frame and
Equipped with
The inside of the four-circumferential frame is filled with gypsum, and the gypsum and the inner surface of the four-circumferential frame are integrated, which is a heat shield door.
The gypsum-filled four-circle frame has increased strength compared to the conventional door body having a hollow four-circle frame, so that the door body can be given strength, and the conventional door body can be given strength. It is possible to eliminate the middle bone used for the purpose of giving strength to the door.

In one embodiment, the heat shield door comprises a refractory core material filled in a space surrounded by the surface material.
On the found surface of the surface material, at least the entire surface of the surface portion located on the center side of the door body from the four-circumferential frame is in contact with the refractory core material.
In one embodiment, the entire surface of the found surface of the surface material is in contact with the refractory core material.
The four-circle frame filled with gypsum and the fire-resistant core material combine to give strength to the door body, and the heat absorption of the gypsum and the heat-shielding property of the fire-resistant core material can suppress the temperature rise of the door body. ..

In one embodiment, the expected dimension of the four-circle frame is smaller than the estimated dimension of the door body.
The refractory core material includes a peripheral refractory core material located between the found surface of the four-circumferential frame and the found surface of the surface material.
The surrounding fireproof core material provided between the surface material and the found surface of the four-circle frame suppresses heat transfer from the heated surface side to the non-heated surface side through the four-circle frame.

In one embodiment, the refractory core material comprises a first refractory core material provided over the entire thickness of a portion including the center of the door body.
It is composed of a second refractory core material which is the peripheral refractory core material adjacent to the peripheral edge portion of the first refractory core material.
In one embodiment, the unit volume mass of the first refractory core material is smaller than the unit volume mass of the second refractory core material.
By reducing the weight of the first refractory core material, which occupies a large proportion of the volume of the door body as compared with the second refractory core material, the weight of the entire door body can be reduced.

In one embodiment, the mechanical strength of the material of the second refractory core material is greater than the mechanical strength of the material of the first refractory core material.
By forming the second refractory core material from a material having a mechanical strength higher than the mechanical strength of the material of the first refractory core material, the second refractory core material (located at the peripheral edge of the door body) at the time of manufacturing the door body. Therefore, external force is likely to act) to prevent damage.

In one embodiment, the surface material comprises a prospective side, the prospective side is screwed to the prospective surface of the four-circumferential frame, and the shaft portion of the screw is located in the gypsum.
The heat absorption of gypsum can suppress the transfer of heat transmitted through the screw, and the gypsum can screw the screw as compared with mortar or the like, so that the workability of the door body is also good.

In one embodiment, a thermal expansion refractory member is provided between the prospective side of the surface material and the prospective surface of the four-circumferential frame.
By closing the gap between the door body and the door frame in the event of a fire, it is possible to prevent flames and smoke (high temperature gas) from entering from the fire side to the non-fire side through the gap.

Since the four-circle-shaped frame filled with the plaster adopted in the present invention has increased strength as compared with the conventional door body having the hollow four-circle-shaped frame, it is possible to give strength to the door body. It is possible to eliminate the middle bone, which is conventionally used for the purpose of imparting strength to the door body, and it is possible to suppress the heat transfer from the heated surface side to the non-heated surface side through the middle bone.

The gypsum filled inside the four-circle frame contains water of crystallization, and the temperature rise of the frame and its surroundings can be suppressed by the heat absorption associated with the evaporation of the water of crystallization due to the heat of a fire.

It is a front view which looked at the door device which concerns on 1st Embodiment from the outdoor side. It is a vertical sectional view of the door device which concerns on 1st Embodiment. (A) is a cross-sectional view of the door device according to the first embodiment, and (B) is a cross section of the door body of the door device according to the first embodiment (above the first lock built in the door body). It is a top view. It is a partially enlarged view of the upper part of FIG. It is a partially enlarged view of the lower part of FIG. It is a partially enlarged view of the door end side part of FIG. 3A. It is a partially enlarged view of the door tail side part of FIG. 3A. It is a front view of the door body (the surface material is omitted) which concerns on 1st Embodiment, and shows the internal element of the door body. (A) is a vertical cross-sectional view of AA'of (C), (B) is a vertical cross-sectional view of BB'of (C), and (C) is a front view of a door end side portion of the door body. It is a figure which shows the frame (strength bone) of the door body which concerns on 1st Embodiment. It is a figure which shows the 2nd refractory core material of the door body which concerns on 1st Embodiment. A first portion of the first refractory core material of the door body according to the first embodiment is shown, (A) is a cross-sectional view (height position of a notched portion on the door end side), (B) is a top view, (B). C) is a front view. The second part of the 1st refractory core material of the door body which concerns on 1st Embodiment is shown, (A) is a top view, (B) is a front view. It is sectional drawing of the door body which concerns on 2nd Embodiment. It is sectional drawing of the door body which concerns on 3rd Embodiment. It is sectional drawing of the door body which concerns on 4th Embodiment. It is sectional drawing of the door body which concerns on 5th Embodiment.

[A] Overall Configuration of Door Device FIG. 1 is a front view of the door device according to the first embodiment as viewed from the outdoor side, and the door device is formed by a vertically rectangular door frame 1 and a door frame 1. It consists of a door body 2 that opens and closes the opening. In the present embodiment, the door body 2 is a heat shield door, and the door device is used as a fire door. The door frame 1 is formed in a vertical rectangular shape from the upper frame 10, the lower frame 11, the door end side vertical frame 12, and the door tail side vertical frame 13. The configuration of the door frame 1 will be described in detail later.

2 is a vertical cross-sectional view of the door device, FIG. 3A is a cross-sectional view of the door device, and FIG. 8 is a front view of the door body 2. The door body 2 includes a first metal surface material 20 and a second surface material 21 forming the outer surface of the door body 2, an upper frame 3 forming a force bone, a lower frame 4, and a vertical frame 5 on the door end side. It is composed of a metal (typically steel) four-circle frame made of the door tail side vertical frame 6 and a core material provided in the internal space of the door body 2. In the present embodiment, as described in detail below, the first surface material 20 and the second surface material 21 which are the constituent elements of the door body 2, and the upper frame 3, the lower frame 4, and the door end side forming a force bone are formed. The door body 2 is configured by the vertical frame 5, the door tail side vertical frame 6, the fire-resistant core materials 7A to 7H, and the fire-resistant core materials 8A to 8E by appropriately contacting the elements with each other. It is understood by those skilled in the art that the proximity may be sufficient to the extent that it does not affect, in which case "contact" can be replaced with "proximity".

The core materials are the refractory core materials 7A to 7H provided between the four-circumferential frame and the first surface material 20 and the second surface material 21, and the refractory core materials 8A to occupy the central portion of the internal space of the door body 2. It is composed of 8E and. In the internal space of the door body 2, the fire-resistant core materials 8A to 8E are provided in the space excluding the four-circumferential frame, the fire-resistant core materials 7A to 7H, and the locks (first lock 24, second lock 25, third lock 26). It does not have a so-called central bone. In the present specification, the refractory core materials 8A to 8E occupying most of the total volume of the core material are collectively referred to as the first refractory core material 8, and the refractory core materials 7A to 7H are collectively referred to as the second refractory core material 7. Call. In the present embodiment, the first fire-resistant core material 8 and the second fire-resistant core material 7 are formed of a calcium silicate plate, but the specific gravity of the calcium silicate plate of the second fire-resistant core material 7 is the first fire-resistant core material. It is larger than the specific gravity of the calcium silicate plate of No. 8, and the second fire-resistant core material 7 has a mechanical strength higher than that of the first fire-resistant core material 8.

The first surface material 20 is formed by bending a thin steel plate, and has a main surface portion 200 forming an outdoor side finding surface of the door body 2 and an upper side 201 formed by bending a peripheral portion of the main surface portion 200. , The lower side 202, the first side side 203, and the second side side 204. In the following description, the main surface portion 200 of the first surface material 20 constituting the door body 2 as one component of the door body 2 is referred to as a first finding surface 200.

The second surface material 21 is formed by bending a thin steel plate, and has a main surface portion 210 forming an indoor side finding surface of the door body 2 and an upper side 211 formed by bending a peripheral portion of the main surface portion 210. , The lower side 212, the first side side 213, and the second side side 214. In the following description, the main surface portion 210 of the second surface material 21 constituting the door body 2 as one component of the door body 2 is referred to as a second found surface 210.

The upper surface of the door body 2 is formed from the upper side 201 of the first surface material 20 and the upper side 211 of the second surface material 21, and the door body 2 is formed from the lower side 202 of the first surface material 20 and the lower side 212 of the second surface material 21. The lower surface of the door body 2 is formed, and the door end side prospective surface of the door body 2 is formed from the first side side 203 of the first surface material 20 and the first side side 213 of the second surface material 21. A door tail side prospective surface of the door body 2 is formed from the second side side 204 of the material 20 and the second side side 214 of the second surface material 21.

As shown in FIG. 1, the door body 2 is rotatably supported by the door tail side vertical frame 13 of the door frame 1 by a hinge 22 provided at the door tail side portion. On the door end side portion of the outdoor side finding surface (first found surface 200 of the first surface material 20) and the indoor side finding surface (second found surface 210 of the second surface material 21) of the door body 2. A handle 23 (the handle on the indoor side finding surface is not shown) is provided. The first lock 24 is built in the door end side portion of the door body 2 located in the middle in the height direction. Further, the second lock 25 is built in the upper part of the door end side portion of the door body 2, and the third lock 26 is built in the third lock 26 located in the lower part (see FIGS. 1 and 8).

The first lock 24 has a predetermined thickness (expected dimension) and a predetermined width (found dimension), and has a front view-shaped lock case 240 and a latch L built in the lock case 240 (see FIG. 8A (C)). ), Dead bolt (not shown). A latch L of the first lock 24 and a strike of a dead bolt are provided at a predetermined height of the first prospective surface 122 of the door end side vertical frame 12 of the door frame 1. The latch L protrudes from the door end side finding surface of the door body 2 by an urging means and locks to the latch receiving hole of the strike to maintain the closed posture of the door body 2 and interlocks with the rotation operation of the handle 23. The protruding latch L is retracted into the door end side finding surface of the door body 2 to unlock the locked state, thereby opening the door body 2. The dead bolt is a strike dead due to the rotation of the operation knob (not shown) provided on the indoor side finding surface of the door body 2 and the rotation of the key inserted into the key hole 241 provided on the outdoor side finding surface. It is designed to take a locking posture and a releasing posture with respect to the bolt receiving hole.

The second lock 25 has a predetermined thickness (expected dimension) and a predetermined width (found dimension), and has a front view-shaped lock case 250 and a latch L built in the lock case 250 (see FIG. 8A (C)). ) Is provided, and no deadbolt is provided. The third lock 26 has a predetermined thickness (expected dimension) and a predetermined width (found dimension), and has a front view-shaped lock case 260 and a latch L built in the lock case 260 (see FIG. 8A (C)). ) Is provided, and no deadbolt is provided. In the present embodiment, the lock case 240 of the first lock 24, the lock case 250 of the second lock 25, and the lock case 260 of the third lock 26 have the same thickness (expected dimension) and width (found dimension). There is. A strike of the latch L of the second lock 25 is provided in the upper portion of the first prospective surface 122 of the door end side vertical frame 12 of the door frame 1, and a strike of the latch L of the third lock 26 is provided in the lower portion. There is. The latch L of the second lock 25 and the third lock 26 protrudes from the door end side finding surface of the door body 2 by the urging means and is locked to the latch receiving hole of the strike to maintain the closed posture of the door body 2. There is. In the present embodiment, the door body 2 is engaged with the door end side vertical frame 12 of the door frame 1 at three points in the height direction when the opening is fully closed, so that the door body 2 is heated by the heat of a fire. Warpage is prevented as much as possible, and a gap that is disadvantageous in terms of fire prevention, smoke prevention, and heat insulation is prevented from being formed between the door body 2 and the door frame 1.

The rotation of the handle 23 and the operation of the latch L of the first lock 24, the latch L of the second lock 25, and the latch L of the third lock 26 are linked, and the handle is in a horizontal posture when the door body 2 is closed. By rotating 23 downward, the latch L of the first lock 24, the latch L of the second lock 25, and the latch L of the third lock 26, which are in the locked posture (protruding posture) with respect to the latch receiving hole, are doord. It moves in the direction of retracting into the door end side finding surface of the body 2 and becomes a release posture (retracted posture). Therefore, when the door body 2 is in the closed posture, it moves into a protruding posture in conjunction with the rotation operation of the handle 23. The door body 2 is released by simultaneously retracting the three latches L into the door end side finding surface of the door body 2 and unlocking the locked state.

More specifically, between the first lock 24 and the second lock 25, and between the first lock 24 and the third lock 26, the rod 27 is interlocked and connected by a rod 27 extending in the door body 2 in a vertical posture. The latch L in the locked posture becomes the released posture in conjunction with the downward movement or the upward movement. The rod 27 connecting the first lock 24 and the second lock 25 and the rod 27 connecting the first lock 24 and the third lock 26 may be separate members or the same member. Such a so-called three-point latch lock is disclosed in, for example, Japanese Patent Application Laid-Open No. 2013-721799 and Japanese Patent Application Laid-Open No. 2013-249644, and the description of these documents is described for a specific example of interlocking configuration of a rod and a latch L. You can refer to it. In the present embodiment, a total of three locks, a first lock 24 having a dead bolt and a latch L, a second lock 25 having only the latch L, and a third lock 26, are used, but four or more locks are used. It may be adopted.

[B] Quadruple frame of the door body The upper frame 3, the lower frame 4, the door end side vertical frame 5, and the door end side vertical frame 6 of the door body 2 constitute the gypsum of the door body 2, and the present embodiment Then, the gypsum 9 is filled inside each of the frames 3 to 6. The cross-sectional shape and the cross-sectional dimension of each of the frames 3 to 6 are the same, and FIG. 9 showing a single frame is applied to each of the frames 3 to 6 in common. Hereinafter, the configuration of each frame 3 to 6 will be described in detail.

[B-1] The upper frame 3 of the upper frame door body 2 is formed in a U-shape in cross-sectional view from the first finding surface portion 30, the second finding surface portion 31, and the upper surface portion 32. The gypsum 9 as a filler is filled in the recess formed from the first finding surface portion 30, the second finding surface portion 31, and the upper surface portion 32. The lower end of the first finding surface portion 30, the lower end of the second finding surface portion 31, and the lower surface 33 of the upper frame 3 are formed from the gypsum 9. The first finding surface portion 30, the second finding surface portion 31, the door end side end surface in the length direction of the upper surface portion 32, and the gypsum 9 form the door end side prospective surface 34 of the upper frame 3, and the first finding surface portion 3. A face portion 30, a second finding surface portion 31, a door tail side end surface in the length direction of the upper surface portion 32, and a gypsum 9 form a door tail side prospective surface 35 of the upper frame 3. The gypsum 9 is obtained by filling the concave part of the upper frame 3 with a fluidized one and solidifying it, and the solidified gypsum 9 and the inner surface of the first finding surface portion 30 and the second finding surface portion 31 are obtained. The inner surface of the upper frame 32 and the inner surface of the upper surface portion 32 are adhered to each other, and the strength of the upper frame 3 is enhanced by filling with gypsum 9. The gypsum 9 filled inside the upper frame 3 contains water of crystallization, and the heat absorption associated with the evaporation of the water of crystallization due to the heat of a fire suppresses the temperature rise of the upper frame 3 and its surroundings.

[B-2] The lower frame 4 of the lower frame door body 2 is formed in a U-shape in cross-sectional view from the first finding surface portion 40, the second finding surface portion 41, and the lower surface portion 42. The gypsum 9 as a filler is filled in the recess formed from the first finding surface portion 40, the second finding surface portion 41, and the lower surface portion 42. The upper end of the first finding surface portion 40, the upper end of the second finding surface portion 41, and the upper surface 43 of the lower frame 4 are formed from the gypsum 9. The first finding surface portion 40, the second finding surface portion 41, the door end side end surface in the length direction of the lower surface portion 42, and the gypsum 9 form the door end side prospective surface 44 of the lower frame 4, and the first finding surface portion 44 is formed. A face portion 40, a second finding surface portion 41, a door tail side end surface in the length direction of the lower surface portion 42, and a gypsum 9 form a door tail side prospective surface 45 of the lower frame 4. The gypsum 9 is obtained by filling the concave part of the lower frame 4 with a fluidized one and solidifying it, and the solidified gypsum 9 and the inner surface of the first found surface portion 40 and the second found surface portion 41. The inner surface of the lower frame 42 and the inner surface of the lower surface portion 42 are adhered to each other, and the strength of the lower frame 4 is enhanced by filling with gypsum 9. The gypsum 9 filled inside the lower frame 4 contains water of crystallization, and the temperature rise of the lower frame 4 and its surroundings is suppressed by the heat absorption accompanying the evaporation of the water of crystallization due to the heat of a fire.

[B-3] Door-to-door vertical frame The door-to-door vertical frame 5 of the door body 2 is formed in a U-shape in cross-sectional view from the first finding surface portion 50, the second finding surface portion 51, and the prospective surface portion 52. Has been done. The recess formed from the first finding surface portion 50, the second finding surface portion 51, and the prospective surface portion 52 is filled with gypsum 9 as a filler. The door tail side end of the first finding surface portion 50, the door tail side end of the second finding surface portion 51, and the door tail side prospective surface 53 of the door end side vertical frame 5 are formed from the gypsum 9. The first found surface portion 50, the second found surface portion 51, the upper end surface of the prospective surface portion 52 in the height direction, and the gypsum 9 form the upper end surface 54 of the door end side vertical frame 5, and the first found surface portion 50 and the like. , The lower end surface portion 51 of the second finding surface portion 51, the lower end surface portion 52 in the height direction, and the lower end surface 55 of the door end side vertical frame 5 are formed from the plaster 9. The gypsum 9 is obtained by filling the concave part of the vertical frame 5 on the door end side with a fluid state and solidifying it, and the solidified gypsum 9 and the inner surface of the first finding surface portion 50, the second view The inner surface of the attached surface portion 51 and the inner surface of the prospective surface portion 52 are adhered to each other, and the strength of the door end side vertical frame 5 is enhanced by filling with gypsum 9. The gypsum 9 filled inside the door-to-door vertical frame 5 contains water of crystallization, and the temperature of the door-to-door vertical frame 5 and its surroundings rises due to the heat absorption caused by the evaporation of the water of crystallization due to the heat of a fire. Suppress. A predetermined portion in the height direction of the prospective surface portion 52 of the door end side vertical frame 5 is cut out to receive the lock (1st lock 24, 2nd lock 25, 3rd lock 26), and corresponds to the lock. The interior space is not filled with plaster.

[B-4] Door tail side vertical frame The door tail side vertical frame 6 of the door body 2 is formed in a U-shape in cross section from the first finding surface portion 60, the second finding surface portion 61, and the prospective surface portion 62. Has been done. The recess formed from the first finding surface portion 60, the second finding surface portion 61, and the prospective surface portion 62 is filled with gypsum 9 as a filler. The door end side end of the first finding surface portion 60, the door tip side end of the second finding surface portion 61, and the door end side prospective surface 63 of the door tail side vertical frame 6 are formed from the gypsum 9. The upper end surface 64 of the door tail side vertical frame 6 is formed from the first finding surface portion 60, the second finding surface portion 61, the upper end of the prospective surface portion 62 in the height direction, and the plaster 9, and the first finding surface portion 60 and the like. , The lower end surface portion 61 of the second finding surface portion 61 in the height direction of the prospective surface portion 62 and the lower end surface 65 of the door tail side vertical frame 6 are formed from the plaster 9. The gypsum 9 is obtained by filling the concave part of the door tail side vertical frame 6 with a fluidized one and solidifying it. The inner surface of the attached surface portion 61 and the inner surface of the prospective surface portion 62 are adhered to each other, and the strength of the door tail side vertical frame 6 is enhanced by filling with gypsum 9. The gypsum 9 filled inside the door tail side vertical frame 6 contains water of crystallization, and the temperature rise of the door tail side vertical frame 6 and the surroundings due to the heat absorption caused by the evaporation of the crystal water due to the heat of the fire. Suppress.

[B-5] Overall Configuration of Quadruple Frame As shown in FIG. 1, the upper end surface 54 of the vertical frame 5 on the door end abuts on the door end side portion of the lower surface 33 of the upper frame 3, and the upper frame 3 The upper end surface 64 of the door tail side vertical frame 6 abuts on the door tail side portion of the lower surface 33, and the lower end surface 55 of the door end side vertical frame 5 abuts on the door end side portion of the upper surface 43 of the lower frame 4. The lower end surface 65 of the door tail side vertical frame 6 comes into contact with the door tail side portion of the upper surface 43 of the lower frame 4, so that the upper frame 3, the lower frame 4, the door end side vertical frame 5, and the door tail are contacted. A four-circumferential frame is formed from the side vertical frame 6. In the four-circle frame, the recesses of the upper frame 3, the lower frame 4, the door end side vertical frame 5, and the door tail side vertical frame 6 face the inside of the door body 2, and the recesses are solidified in the recesses. The gypsum 9 is filled, and the inner surface of the recess and the gypsum 9 are firmly adhered or fixed, and the inner surface of the recess of the four-circumferential frame and the gypsum 9 are integrated. By integrating the inner surface of the concave portion of the frame with the gypsum 9, the mechanical strength of the frame (so-called reinforced bone) itself is increased as compared with the case where a gypsum board or the like is inserted in the concave portion of the frame. As described above, in the present embodiment, by filling the inside of the four-circle-shaped frame with gypsum, the strength of the frame (so-called force bone) is improved, and as a result, the four-circle-shaped frame filled with gypsum 9 and the first. A predetermined door strength can be obtained by the combination of the fireproof core material 8, and the central bone arranged between the surface materials in the conventional door body can be omitted. Further, it is possible to suppress the temperature rise in the four-circumferential frame and the periphery of the frame due to the endothermic effect caused by the evaporation of water of crystallization from the gypsum 9 due to the heating in the event of a fire. Further, by filling the gypsum 9 to increase the strength of the four-circumferential frame, the expected dimension of the frame can be designed to be smaller than the expected dimension of the door body 2, and as described below, it is predetermined. A second fire-resistant core material 7 having a thickness (thickness sufficient to exert a heat-shielding effect and reinforcement at the end of the door body) is placed between the first surface material 20, the second surface material 21, and the four-circumferential frame. By making it possible to provide the frame and designing the frame to be smaller, the expected dimension of the second fireproof core material 7 can be increased.

[C] Fire-resistant core material [C-1] Second fire-resistant core material In the present embodiment, the expected dimensions of the four-circumferential frame forming the ribs, that is, the upper frame 3, the lower frame 4, and the door end side vertical frame 5 The expected dimension of the door tail side vertical frame 6 is smaller than the estimated dimension (thickness) of the door body 2, and is between the first surface material 20 and the four-circle frame, and the second surface material 21. A second fireproof core material 7 is provided between the four-circumferential frames. By sandwiching the second refractory core material 7 between the metal first surface material 20, the second surface material 21, and the metal four-circumferential frame, the other can be seen from one finding surface of the door body 2. It suppresses heat transfer to the surface. The second refractory core material 7 according to the present embodiment will be described in detail below.

[C-1] Second refractory core material The second refractory core material 7 is provided between the first surface material 20 and the second surface material 21 of the door body 2 and the four-circumferential frame. In the present embodiment, the second refractory core material 7 is a refractory core material 7A provided between the first surface material 20 and the upper frame 3, and a refractory core provided between the second surface material 21 and the upper frame 3. Material 7B, refractory core material 7C provided between the first surface material 20 and the lower frame 4, refractory core material 7D provided between the second surface material 21 and the lower frame 4, first surface material 20 and the door. The refractory core material 7E provided between the front vertical frame 5, the refractory core 7F provided between the second surface material 21 and the door end vertical frame 5, the first surface material 20 and the door tail side vertical frame. It includes a refractory core material 7G provided between the second surface material 21 and the refractory core material 7H provided between the second surface material 21 and the door tail side vertical frame 6. As shown in FIGS. 2 to 7, the cross-sectional concave portion from the four-circumferential frame (upper frame 3, lower frame 4, door tip side vertical frame 5, door tail side vertical frame 6) and the second refractory core materials 7A to 7H. Is formed, and the peripheral portion having a convex cross-sectional view of the first refractory core material 8 comes into contact with the concave portion. Therefore, the seam between the second refractory core material 7 and the first refractory core material 8 has a so-called umbrella shape and does not extend linearly in a plan view in the thickness direction of the door body 2, so that the heat shield is provided. It is advantageous in terms of performance.

In this embodiment, the refractory core materials 7A, 7B, 7C, and 7D have the same shape and the same dimensions, the refractory core materials 7E and 7F have the same shape and the same dimensions, and the refractory core materials 7G and 7H have the same shape and the same dimensions. It has dimensions. The refractory core materials 7A, 7B, 7C, 7D and the refractory core materials 7G, 7H have the same cross-sectional shape and dimensions except for the length dimension. The basic shapes and dimensions of the refractory core materials 7E and 7F are the same as those of the refractory core materials 7G and 7H except for the found dimensions. Therefore, the names and reference numbers of the respective parts of the second refractory core material 7 shown in FIG. 10 are commonly applied to the refractory core materials 7A to 7H.

As shown in FIG. 10, the refractory core materials 7A to 7G include the first finding surface 70 and the second finding surface 71, and four peripheral end faces, that is, the first end face 72, the second end face 73, and the third. It is a long plate-like body composed of an end face 74 and a fourth end face 75. The first end surface 72 and the second end surface 73 are located at both ends in the longitudinal direction of the second refractory core material 7, and the third end surface 74 and the fourth end surface 75 are located at both ends in the lateral direction of the second refractory core material 7. positioned.

In the refractory core materials 7A and 7B, the first end surface 72 is the door end side prospective surface, the second end surface 73 is the door tail side prospective surface, the third end surface 74 is the upper surface, and the fourth end surface 75 is the lower surface. In 7C and 7D, the first end surface 72 is the door end side prospective surface, the second end surface 73 is the door tail side prospective surface, the third end surface 74 is the lower surface, and the fourth end surface 75 is the upper surface, and the refractory core materials 7E and 7F. The first end surface 72 is the upper surface, the second end surface 73 is the lower surface, the third end surface 74 is the door end side prospective surface, and the fourth end surface 75 is the door end side prospective surface. The first end surface 72 is the upper surface, the second end surface 73 is the lower surface, the third end surface 74 is the door end side prospective surface, and the fourth end surface 75 is the door end side prospective surface.

The second refractory core material 7 has a rectangular cross-sectional shape from the first finding surface 70, the second finding surface 71, the third end surface 74, and the fourth end surface 75. The refractory core materials 7A to 7D, 7G, and 7H have rectangular cross-sectional views of the same size and the same size (first found surface 70, second found surface 71, third end surface 74, fourth end surface 75). The refractory core materials 7E and 7F have a rectangular shape in a cross-sectional view similar to the refractory core materials 7A to 7D, 7G and 7H, but the first and second found surfaces of the refractory core materials 7E and 7F are found. The found size of 71 is larger than the found dimensions of the first found surface 70 and the second found surface 71 of the refractory core materials 7A to 7D.

As shown in FIG. 8, in the refractory core material 7A, the refractory core material 7C, the refractory core material 7E, and the refractory core material 7G provided between the first surface material 20 and the four-circumferential frame, the lower surface of the refractory core material 7A. The upper surface 72 of the refractory core material 7E is in contact with the widthwise door end side portion of 75, and the upper surface 72 of the refractory core material 7G is in contact with the widthwise door end side portion of the lower surface 75 of the refractory core material 7A. The lower surface 73 of the refractory core material 7E is in contact with the widthwise door end side portion of the upper surface 75 of the refractory core material 7C, and the refractory core material is in contact with the widthwise door end side portion of the upper surface 75 of the refractory core material 7C. The lower surface 73 of the 7G is in contact with the refractory core material 7A, the refractory core material 7C, the refractory core material 7E, and the refractory core material 7G are provided in a continuous four-circle shape. That is, it is located between the first surface material 20 and the four-circumferential frame (upper frame 3, lower frame 4, door-end side vertical frame 5, door-end side vertical frame 6), and is located between the four-circumferential second refractory core material. 7 (refractory core material 7A, refractory core material 7C, refractory core material 7E, refractory core material 7G) is provided.

Similarly, in the refractory core material 7B, the refractory core material 7D, the refractory core material 7F, and the refractory core material 7H provided between the second surface material 21 and the four-circumferential frame, the width direction of the lower surface 75 of the refractory core material 7B. The upper surface 72 of the refractory core material 7F is in contact with the door end side portion, and the upper surface 72 of the refractory core material 7H is in contact with the widthwise door end side portion of the lower surface 75 of the refractory core material 7B. The lower surface 73 of the refractory core material 7F is in contact with the widthwise door end side portion of the upper surface 75 of the material 7D, and the lower surface 73 of the refractory core material 7H is in contact with the widthwise door end side portion of the upper surface 75 of the refractory core material 7D. Are in contact with each other, and the refractory core material 7B, the refractory core material 7D, the refractory core material 7F, and the refractory core material 7H are provided in a continuous four-circle shape. That is, it is located between the second surface material 21 and the four-circumferential frame (upper frame 3, lower frame 4, door-end side vertical frame 5, door-end side vertical frame 6), and is located between the four-circumferential second refractory core material. 7 (refractory core material 7B, refractory core material 7D, refractory core material 7F, refractory core material 7H) is provided.

[C-2] First Fire-Resistant Core Material The first fire-resistant core material 8 is a four-circumferential frame (upper frame 3, lower) in an internal space surrounded by the first surface material 20 and the second surface material 21 of the door body 2. Frame 4, door-end side vertical frame 5, door-end side vertical frame 6), second fire-resistant core material 7 (fire-resistant core materials 7A to 7H), lock (1st lock 24, 2nd lock 25, 3rd lock 26) It is provided so as to occupy the space except for the door body 2, and the door body 2 does not have a central bone.

In the present embodiment, the first refractory core material 8 is divided into a plurality of portions. As shown in FIG. 8, the first refractory core material 8 is composed of five parts, the refractory core materials 8A to E.

The refractory core material 8A (first part) has the first surface material 20, the second surface material 21, and the upper frame 3 in the internal space excluding the door end side portion (the width corresponding to the lock) of the door body 2. It is provided in a space surrounded by a lower frame 4, a vertical frame 6 on the door tail side, and refractory core materials 7A, 7B, 7C, 7D, 7E, 7F, 7G, and 7H.

The refractory core material 8B (second part) is the upper frame 3, the door end side vertical frame 5, the fire resistant core material 7E, 7F in the internal space of the door end side part (the found width corresponding to the lock) of the door body 2. , Is provided in a space surrounded by the upper surface of the second lock 25.

The refractory core material 8C (third part) is the door end side vertical frame 5, the refractory core material 7E, 7F, and the second lock in the internal space of the door end side part (the found width corresponding to the lock) of the door body 2. It is provided in a space surrounded by the lower surface of 25 and the upper surface of the first lock 24.

The refractory core material 8D (fourth part) is the door end side vertical frame 5, the refractory core material 7E, 7F, the first lock in the internal space of the door end side part (the found width corresponding to the lock) of the door body 2. It is provided in a space surrounded by the lower surface of the 24 and the upper surface of the third lock 26.

The refractory core material 8E (fifth part) is the lower frame 4, the vertical frame 5 on the door end side, the fireproof core material 7E, 7F in the internal space of the door end side portion (the width corresponding to the lock) of the door body 2. , Is provided in a space surrounded by the lower surface of the third lock 26.

The door end side portion of the refractory core material 8A (first part) and the door tail side portion of the refractory core materials 8B to 8E (second part to fifth part) are in contact with each other, and the first refractory core material 8 is integrated. Consists of.

The refractory core material 8A extends integrally in the width direction and the height direction in the internal space excluding the door end side portion (the found width corresponding to the lock) of the door body 2. The refractory core material 8A includes a first finding surface 80 and a second finding surface 81, and a peripheral portion having a four-circumferential shape around the peripheral portion. It is a convex part. Further, the refractory core materials 8B to 8E come into contact with the peripheral edge portion of the refractory core material 8A on the door end side, whereby the peripheral edge portion of the first refractory core material 8 on the door end side is formed.

The upper peripheral portion of the refractory core material 8A is composed of an upper surface 82, a first upper finding surface 800, and a second upper finding surface 810, and is composed of an upper end of the first finding surface 80 and a first upper finding surface. The lower end of the 800 is connected by the first upper horizontal plane 804, and the upper end of the second finding surface 81 and the lower end of the second upper finding surface 810 are connected by the second upper horizontal plane 814. An upward cross-sectional convex portion is formed from the first upper horizontal plane 804, the second upper horizontal plane 814, the first upper finding surface 800, the second upper finding surface 810, and the upper surface 82.

The lower peripheral edge of the refractory core material 8A is composed of a lower surface 83, a first lower finding surface 801 and a second lower finding surface 811, and a lower end of the first finding surface 80 and a first lower surface. The upper end of the side finding surface 801 is connected by the first lower horizontal plane 805, and the lower end of the second finding surface 81 and the upper end of the second lower finding surface 811 are connected by the second lower horizontal plane 815. There is. A downward cross-sectional convex portion is formed from the first lower horizontal plane 805, the second lower horizontal plane 815, the first lower finding surface 801 and the second lower finding surface 811 and the lower surface 83.

The peripheral edge of the fireproof core material 8A on the door end side is composed of a door end side prospective surface 84, a first door end side finding surface 802, and a second door end side finding surface 812, and is composed of a first finding surface. The door end side end of 80 and the door tail side end of the first door end side finding surface 802 are connected by the first door end side vertical surface 806, and the door end side end of the second finding surface 81 and the second The door tail side end of the door end side finding surface 812 is connected by a second door end side vertical surface 816. The first door-to-door side vertical surface 806, the second door-to-door side vertical surface 816, the first door-to-door side finding surface 802, the second door-to-door side finding surface 812, and the door-to-door side prospective surface 84 to face the door-to-door side. A convex portion in cross-sectional view is formed.

The peripheral edge portion of the fireproof core material 8A on the door tail side is composed of a door tail side prospective surface 85, a first door tail side finding surface 803, and a second door tail side finding surface 813, and is composed of a first found surface. The door tail side end of 80 and the door end side end of the first door tail side finding surface 803 are connected by the first door tail side vertical surface 807, and the door tail side end of the second finding surface 81 and the second. The door end side end of the door tail side finding surface 813 is connected by the second door tail side vertical surface 817. 1st door butt side vertical surface 807, 2nd door butt side vertical surface 817, 1st door butt side finding surface 803, 2nd door butt side finding surface 813, door butt side prospective surface 85 facing the door butt side A convex portion in cross-sectional view is formed.

The door end side prospective surface 84 of the refractory core material 8A is a first surface 840 on the first door end side finding surface 802 side, a second surface 841 on the second door end side finding surface 812 side, and a first surface. It consists of a third surface 842, which connects the 840 and the second surface 841. In the illustrated embodiment, the estimated dimension of the first surface 840 is smaller than the estimated dimension of the second surface 841, and the found dimension of the first door-end side finding surface 802 is the estimated dimension of the second household-side finding surface 812. It is larger than the found size, and the found dimensions of the first door end side finding surface 802 and the second door end side finding surface 812 are the first door tail side finding surface 803 and the second door tail side looking. It is larger than the found size of the attached surface 813.

Three recesses 86 are formed on the peripheral edge of the refractory core material 8A on the door end side at intervals in the height direction. Each recess 86 is formed at a height corresponding to the first lock 24, the second lock 25, and the third lock 26 built in the door end side portion of the door body 2, and the first lock is formed in each recess 86. 24, the second lock 25, and the third lock 26 are designed to accommodate the posterior portions (door tail side portions) of the lock cases 240, 250, and 260. The bottom of the recess 86 on the peripheral edge of the refractory core material 8A on the door end side has an intermediate prospective surface 843, and the intermediate prospective surface 843 has a lock case of the first lock 24, the second lock 25, and the third lock 26. The door tail side end faces 2400, 2500, and 2600 of 240, 250, and 260 are in contact with each other (see FIG. 3B) or are in close proximity to each other.

A refractory core material 8B, a refractory core material 8C, a refractory core material 8D, and a refractory core material 8E are provided adjacent to the door end side of the refractory core material 8A. The refractory core materials 8B to 8E (second portions to fifth portions) have the same cross-sectional dimensions and cross-sectional shapes except for the height dimensions. Therefore, the names and reference numbers of the respective parts of the refractory core material 8B (second part) shown in FIG. 12 are commonly applied to the refractory core materials 8B to 8E.

The refractory core materials 8B to 8E include a first finding surface 80', a second finding surface 81', an upper surface 82', a lower surface 83', a door end side prospective surface 87, and a door tail side prospective surface 88. And have. The door tail side prospective surface 88 connects the first surface 880 on the first finding surface 80'side, the second surface 881 on the second finding surface 81' side, and the first surface 880 and the second surface 881. It consists of a third surface 882 and. In the illustrated embodiment, the estimated dimension of the first surface 880 is larger than the estimated dimension of the second surface 881, and the found dimension of the first found surface 80'is larger than the estimated dimension of the second found surface 81'. Is also small.

The door end side prospective surface 84 of the refractory core material 8A and the door end side prospective surface 88 of the refractory core material 8B, the refractory core material 8C, the refractory core material 8D, and the refractory core material 8E are in contact with each other. The refractory core material 8E integrally forms the first refractory core material 8. At the contact between the door end side prospective surface 84 of the refractory core material 8A and the door end side prospective surface 88 of the refractory core materials 8B to 8E, the first surface 840 of the refractory core material 8A and the first surface of the refractory core materials 8B to 8E. One surface 880 is in contact with the second surface 841 of the refractory core material 8A, and the second surface 881 of the refractory core materials 8B to 8E is in contact with each other. The found dimensions of the third surface 842 of the refractory core material 8A and the third surface 882 of the refractory core materials 8B to 8E are the same. Therefore, the seam between the refractory core material 8A and the refractory core materials 8B to 8E has a so-called umbrella shape and does not extend linearly in a plan view in the thickness direction of the door body 2, so that the heat shielding performance is improved. It is advantageous.

The contact portion between the door end side prospective surface 84 of the refractory core material 8A and the door end side prospective surface 88 of the refractory core material 8B, the refractory core material 8C, the refractory core material 8D, and the refractory core material 8E has a plan view shape. A space S extending vertically in the height direction of the door body 2 is formed, and the rod 27 is housed in the space S so as to be movable up and down. That is, the fire-resistant core material is composed of a first element (fire-resistant core material 8A) and a second element (fire-resistant core material 8C, 8D) located in the space S and divided along the height direction of the space S. The first element (fireproof core material 8A) has a first contact surface (first surface 840, second surface 841 portion) and a first portion extending in the height direction (second surface 841 portion and third surface). 842), and the second element (fireproof core material 8C, 8D) has a second contact surface (a portion of the first surface 880, a second surface 881) and a second portion (first surface 880) extending in the height direction. The space S includes a first contact surface (first surface 840, second surface 841 portion) of the first element and a second contact surface (first surface) of the second element. In a state where the portion of the surface 880 and the second surface 881) are in contact with each other, the first portion (the portion of the second surface 841 and the third surface 842) and the second portion (the portion of the first surface 880 and the third surface 882) are in contact with each other. Formed from and. The refractory core materials 7E and 7F have a found size larger than the found size of the locks (1st tablet 24, 2nd tablet 25, 3rd tablet 26), and the refractory core materials 7E and 7F have a finding size on the door tail side. The portion extends beyond the space S (the contact surface or seam between the door end side prospective surface 84 of the refractory core material 8A and the door tail side prospective surface 88 of the refractory core materials 8B to 8E) to the door tail side. If the rod 27 does not extend to the heights of the upper refractory core material 8B and the lower refractory core material 8E, the door end side prospective surface 84 of the refractory core material 8A and the door tail side prospect of the refractory core material 8B It is not always necessary to provide a space at the contact portion with the surface 88 and the contact portion between the door end side prospective surface 84 of the refractory core material 8A and the door end side prospective surface 88 of the refractory core material 8E.

In the first refractory core material 8, the upper surface 82 of the refractory core material 8A and the upper surface 82'of the refractory core material 8B are located at the same height, and a continuous upper surface is formed from the upper surface 82 and the upper surface 82', and the upper surface is formed. 82, the upper surface 82'contacts the lower surface 33 of the upper frame 3. The lower surface 83 of the refractory core material 8A and the lower surface 83'of the refractory core material 8E are located at the same height, and a continuous lower surface is formed from the lower surface 83 and the lower surface 83', and the lower surfaces 83 and 83'are the lower frames. It abuts on the upper surface 43 of 4. The refractory core material 8A and the refractory core materials 8B and 8E may be integrally formed.

In the first refractory core material 8, the second lock 25 is located between the lower surface 83'of the refractory core material 8B and the upper surface 82'of the refractory core material 8C, and the lower surface 83'and the refractory core material 8D of the refractory core material 8C. The first lock 24 is located between the upper surface 82'of the refractory core material 8D, and the third lock 26 is located between the lower surface 83' of the refractory core material 8D and the upper surface 82'of the refractory core material 8E.

[C-3] Combination of 1st Refractory Core Material and 2nd Refractory Core Material In the present embodiment, the 1st refractory core material 8 and the 2nd refractory core material 7 are formed of a calcium silicate plate, but the first one. 2 The specific gravity (density) of the calcium silicate plate of the refractory core material 7 is larger than the specific gravity (density) of the calcium silicate plate of the first refractory core material 8, and the second refractory core material 7 is the first refractory core material. It has a mechanical strength greater than 8. By adopting calcium silicate plates having different specific densities in this way, the strength of the second fire-resistant core material 7 located at the end of the door body 2 is maintained, and a large proportion of the internal space of the door body 2 is occupied. 1 The weight of the fireproof core material 8 can be suppressed, and as a result, the weight of the door body 2 can be reduced. Since the second refractory core material 7 is located at the peripheral edge of the door body 2, an external force is likely to act during the manufacture of the door body 2. The second refractory core material 7 is a thin plate body as compared with the first refractory core material 8, but the second refractory core material 7 has a mechanical strength higher than the mechanical strength of the material of the first refractory core material 8. By forming it from a material, it is possible to prevent the second refractory core material 7 from being damaged during the production of the door body 2. The first fire-resistant core material 8 (fire-resistant core material 8A) that occupies the central part of the door in the height direction and the width direction of the door body 2 is integrated and has no seams, so that the door body 2 is given a predetermined surface strength and a center bone. It is possible to prevent heat transfer via the seams and seams, and it is possible to suppress an increase in temperature of the non-heated surface of the door body 2. The first refractory core material 8 and the second refractory core material 7 do not have to be the same material, for example, the mechanical strength of the second refractory core material 7 is larger than the mechanical strength of the first refractory core material 8. It can be selected from a combination of materials (having a predetermined heat insulating property) such that the unit volume mass of the first refractory core material 8 is smaller than the unit volume mass of the second refractory core material 7. Here, in the present specification, the mechanical strength is an index showing the endurance of the target material against the physical external force of compression or tension, so to speak, the material withstands deformation and fracture. Is the strength to be. As the mechanical strength, tensile strength, compressive strength, bending strength and the like are known, and those skilled in the art understand that these strengths can be measured by a predetermined standard measuring method.

[C-4] Material of refractory core material In the present embodiment, the first refractory core material 8 and the second refractory core material 7 are formed of a calcium silicate plate, but the first refractory core material 8 and the second refractory core material 8 are formed. The material of the core material 7 is not limited, and other non-combustible materials having a heat-shielding property may be adopted. Out-of-plane deformation by using two types of nonflammable refractory materials with different densities and mechanical strengths as the first refractory core material 8 and the second refractory core material 7 provided in the internal space of the heat-shielding door body 2. It is possible to provide the door body 2 having both the strength to withstand the heat and the heat insulating property in the event of a fire. As the first fireproof core material 8, lightweight cellular concrete panel (ACL panel) specified in JIS A 5416, gypsum board specified in JIS A 6901, fiber reinforced cement board specified in JIS A 5430, JIS as non-combustible material. Inorganic porous heat insulating material specified in A 9510, artificial mineral fiber heat insulating material specified in JIS A 9504, ceramic fiber blanket specified in JIS R 3311 or alternative AES (alkaline earth silicate wool), and phenol. Examples thereof include resin-based non-combustible heat insulating materials (Fenova board Funen: manufactured by Sekisui Chemical Industry Co., Ltd., Neomafoam F / FS: manufactured by Asahi Kasei Building Materials). As the second refractory core material 7, gypsum board specified in JIS A 6901, fiber reinforced cement board specified in JIS A 5430, and the like can be exemplified as non-combustible materials.

[D] Door frame Generally, the conventional door frame is made of steel and is a member that is continuous from one finding side to the other finding side in the prospective direction, so that the heat received on the fire side is transmitted through the door frame. It will be transmitted to the non-fire side as it is. Therefore, even when a door body having heat shielding performance is adopted, there is a possibility that heat is transferred from the fire side to the non-fire side through the door frame. In the present embodiment, by pouring the gypsum into the door frame and solidifying it, the inner surface of the door frame and the gypsum 9 are firmly adhered or fixed and integrated, and the gypsum 9 filled in the door frame is shielded. By suppressing the temperature rise of the door frame by heat and heat absorption, heat conduction from the fire side to the non-fire side through the door frame of the fire door is prevented as much as possible. In the door frame according to the present embodiment, the heat receiving surface on the outdoor side is a surface facing the outdoor side of the door frame, specifically, the first finding surface 100 of the upper frame 10 and the door end side vertical frame 12th. It is composed of 1 finding surface 120 and the first finding surface 130 of the door tail side vertical frame 13, and the heat receiving surface on the indoor side is a surface facing the indoor side of the door frame, specifically, the second of the upper frame 10. A continuous surface from the found surface 101 to the second lower surface 103, a continuous surface from the second found surface 121 to the second prospective surface 123 of the door end side vertical frame 12, and a second found surface of the door tail side vertical frame 13. It consists of a continuous surface from 131 to the second prospective surface 133. In the present embodiment, the width dimension of the found surface of the door frame (the height dimension of the first found surface 100 and the second found surface 101, the width dimension of the first found surface 120 and the second found surface 121, By increasing the width dimension of the first finding surface 130 and the second finding surface 131) as compared with the conventional case, the ratio of the volume of the plaster 9 to the heat receiving area is increased to improve the heat shielding performance and the heat absorbing performance. It has made it possible to further suppress the temperature rise of the door frame. Further, by adopting the door frame filled with gypsum 9, it is possible to suppress the temperature rise of the end portion of the door body 2 adjacent to the door frame.

[D-1] Upper frame The upper frame 10 is a member extending in the opening width direction, and as shown in FIG. 4, the first finding surface 100, the second finding surface 101, and the first finding surface 100 side. It has a first lower surface 102 and a second lower surface 103 on the second finding surface 101 side extending at a position lower than the first lower surface 102. An intermediate finding surface 104 is formed between the portion of the first lower surface 102 on the second finding surface 101 side and the portion of the second lower surface 103 on the first finding surface 100 side, and the intermediate finding surface 104 is formed. Is provided with a thermal expansion refractory member 14 over the width direction. In the illustrated embodiment, a recess is formed between the portion of the first lower surface 102 on the second finding surface 101 side and the portion of the second lower surface 103 on the first finding surface 100 side, and a recess is formed in the recess. The provided U-shaped support member in cross section forms the intermediate finding surface 104. The upper frame 10 is filled with gypsum 9. The gypsum 9 filled inside the upper frame 10 contains water of crystallization, and the temperature rise of the upper frame 10 and its surroundings is suppressed by the heat absorption accompanying the evaporation of the water of crystallization due to the heat of a fire. Further, the first upper side surface 1000 at the upper end of the first finding surface 100 and the second upper side surface 1010 at the upper end of the second finding surface 101 are flush with each other, facilitating the pouring of the gypsum 9.

When the door body 2 is in the fully closed posture, the upper surface of the door body 2 faces the first lower surface 102 of the upper frame 10 with a gap G, and the upper portion of the indoor side finding surface is the intermediate finding surface. A gap G exists and faces the thermal expansion fireproof member 14 provided in 104. Thermal expansion due to the heat of a fire The refractory member 14 foams and expands, so that the gap G between the upper portion of the indoor side finding surface of the door body 2 and the intermediate finding surface 104 of the upper frame 10 is formed over the opening width direction. It is designed to block. The thermal expansion fireproof member 14 is located slightly closer to the second finding surface 101 than the end of the second lower surface 103 on the first finding surface 100 side, and the door body 2 hits the door when the door body 2 is closed. By contacting with rubber (not shown), the door body 2 does not come into contact with the thermal expansion fireproof member 14 when the door body 2 is closed, and deterioration of the thermal expansion fireproof member 14 is prevented as much as possible. ..

[D-2] Lower frame The lower frame 11 is a member extending in the opening width direction, and as shown in FIG. 5, a cross-sectional view is omitted from the first finding surface 110, the second finding surface 111, and the upper surface 112. It has a character shape. The lower frame 11 is a sill, and most of it is embedded in the floor surface FL, and the upper surface 112 is located slightly above the floor surface FL and extends horizontally. The lower frame 11 is filled with gypsum 9. The gypsum 9 filled inside the lower frame 11 contains water of crystallization, and the temperature rise of the lower frame 11 and its surroundings is suppressed by the heat absorption accompanying the evaporation of the water of crystallization due to the heat of a fire. Further, the lower end of the first finding surface 110 and the lower end of the second finding surface 111 are on the same horizontal plane, facilitating the pouring of the gypsum 9. When the door body 2 is in the fully closed posture, the lower surface of the door body 2 faces the upper surface 112 of the lower frame 11 with a gap G.

[D-3] Door-to-door vertical frame The door-to-door vertical frame 12 is a member extending in the opening height direction, and as shown in FIG. 6, the door-to-door vertical frame 12 has a first finding surface 120 and a second. It has two finding surfaces 121, a first prospective surface 122 on the first finding surface 120 side, and a second prospective surface 123 on the second finding surface 121 side. An intermediate finding surface 124 is formed between the portion of the first prospective surface 122 on the second finding surface 121 side and the portion of the second prospective surface 123 on the first finding surface 120 side, and the intermediate finding surface 124 is formed. The surface 124 is provided with a thermal expansion refractory member 14 over the height direction. In the illustrated embodiment, a recess is formed between the portion of the first prospective surface 122 on the second finding surface 121 side and the portion of the second prospective surface 123 on the first finding surface 120 side. A U-shaped support member provided inside forms the intermediate finding surface 124. The gypsum 9 is filled in the vertical frame 12 on the door end side. The gypsum 9 filled inside the door-to-door vertical frame 12 contains water of crystallization, and the temperature of the door-to-door vertical frame 12 and its surroundings rises due to the heat absorption caused by the evaporation of the water of crystallization due to the heat of a fire. Suppress. The vertical frame 12 on the door end side is provided with a trocover C (see FIG. 3A), but the gypsum 9 is filled around the trocover C except for the portion facing the first prospective surface 122. , The heat transfer through the gypsum cover C is suppressed. Further, the first prospective surface 1200 on the wall side of the first finding surface 120 and the second prospective surface 1210 on the wall side of the second finding surface 121 are flush with each other, facilitating the pouring of the gypsum 9. ..

When the door body 2 is in the fully closed posture, the door end side prospective surface of the door body 2 faces the first prospective surface 122 of the door end side vertical frame 12 with a gap G, and is opposed to the indoor side finding surface. The door end side portion of the door end faces the thermal expansion refractory member 14 provided on the intermediate finding surface 124 with a gap G. Thermal expansion due to the heat of a fire The refractory member 14 foams and expands to open a gap G between the door end side portion of the indoor side finding surface of the door body 2 and the intermediate finding surface 124 of the door end side vertical frame 12. It is designed to block in high directions. The thermal expansion fireproof member 14 is located slightly closer to the second finding surface 121 than the end of the second prospecting surface 123 on the first finding surface 120 side, and the door body 2 is closed when the door body 2 is closed. By contacting the contact rubber (not shown), the door body 2 does not come into contact with the thermal expansion fireproof member 14 when the door body 2 is closed, and deterioration of the thermal expansion fireproof member 14 is prevented as much as possible. There is.

[D-4] Door tail side vertical frame The door tail side vertical frame 13 is a member extending in the opening height direction, and as shown in FIG. 7, the door tail side vertical frame 13 has a first finding surface 130 and a first. It has two finding surfaces 131, a first prospective surface 132 on the first finding surface 130 side, and a second prospective surface 133 on the second finding surface 131 side. An intermediate finding surface 134 is formed between the portion of the first prospective surface 132 on the side of the second finding surface 131 and the portion of the second prospective surface 133 on the side of the first finding surface 130, and the intermediate finding surface 134 is formed. The surface 134 is provided with a thermal expansion refractory member 14 over the height direction. In the illustrated embodiment, a recess is formed between the portion of the first prospective surface 132 on the side of the second finding surface 131 and the portion of the second prospective surface 133 on the side of the first finding surface 130, and the recess is formed. The U-shaped support member provided inside forms the intermediate finding surface 134. The gypsum 9 is filled in the door tail side vertical frame 13. The gypsum 9 filled inside the door tail side vertical frame 13 contains water of crystallization, and the temperature rise of the door tail side vertical frame 13 and the surroundings due to the heat absorption caused by the evaporation of the crystal water due to the heat at the time of fire. Suppress. Further, the first prospective surface 1300 on the wall side of the first finding surface 130 and the second prospective surface 1310 on the wall side of the second finding surface 131 are flush with each other, facilitating the pouring of the gypsum 9. ..

When the door body 2 is in the fully closed posture, the door tail side prospective surface of the door body 2 faces the first prospective surface 132 of the door tail side vertical frame 13 with a gap G, and is opposed to the indoor side finding surface. The door tail side portion of the door end faces the thermal expansion refractory member 14 provided on the intermediate finding surface 134 with a gap G. Thermal expansion due to the heat of a fire The refractory member 14 foams and expands, opening a gap G between the door tail side portion of the indoor side finding surface of the door body 2 and the intermediate finding surface 134 of the door tail side vertical frame 13. It is designed to block in high directions. The thermal expansion fireproof member 14 is located slightly closer to the second finding surface 131 than the end of the second prospecting surface 133 on the first finding surface 130 side, and the door body 2 is closed when the door body 2 is closed. By contacting the contact rubber (not shown), the door body 2 does not come into contact with the thermal expansion fireproof member 14 when the door body 2 is closed, and deterioration of the thermal expansion fireproof member 14 is prevented as much as possible. There is.

[E] Details of the door device [E-1] Configuration of the upper part of the door device As shown in FIG. 4, in the upper part of the door body 2, the upper part of the first found surface 200 of the first surface material 20 and the upper part A refractory core material 7A is provided between the upper frame 3 and the first finding surface portion 30, and the upper portion of the second finding surface 210 of the second surface material 21 and the second finding of the upper frame 3. A refractory core material 7B is provided between the surface portion 31 and the surface portion 31. By sandwiching the refractory core materials 7A and 7B between the first surface material 20 and the upper frame 3, and the second surface material 21 and the upper frame 3, respectively, the first surface material 20, the second surface material 21 and the upper frame 3 can be obtained. Direct contact is restricted to prevent heat from being directly transferred from the first surface material 20 to the upper frame 3 or from the second surface material 21 to the upper frame 3.

The inner surface of the first found surface 70 of the refractory core material 7A and the inner surface of the first found surface 200 of the first surface material 20 are in contact with each other, and the upper portion of the second found surface 71 is the first found surface of the upper frame 3. It is in contact with the outer surface of the surface portion 30. The height dimension of the fire-resistant core material 7A is larger than the height dimension of the upper frame 3, and the lower portion of the fire-resistant core material 7A extends downward beyond the lower surface 33 of the upper frame 3, and the first surface material 20 The heat transfer path (heat transfer path through the contact surface or seam between the fire-resistant core material 7A and the fire-resistant core material 8A) between the first finding surface 200 of the above and the first finding surface portion 30 of the upper frame 3 is lengthened. It suppresses heat transfer.

The first found surface 70 of the refractory core material 7B and the inner surface of the second found surface 210 of the second surface material 21 are in contact with each other, and the upper portion of the second found surface 71 is the second found surface of the upper frame 3. It is in contact with the outer surface of the surface portion 31. The height dimension of the fire-resistant core material 7B is larger than the height dimension of the upper frame 3, and the lower portion of the fire-resistant core material 7B extends downward beyond the lower surface 33 of the upper frame 3, and the second surface material 21 The heat transfer path (heat transfer path through the contact surface or seam between the fire-resistant core material 7B and the fire-resistant core material 8A) between the second found surface 210 and the second found surface portion 31 of the upper frame 3 is lengthened. It suppresses heat transfer.

The upper surface 82 of the upper peripheral portion of the refractory core material 8A is in contact with the lower surface 33 of the upper frame 3, and the first upper finding surface 800 is on the lower portion of the second finding surface 71 of the refractory core material 7A. The second upper finding surface 810 is in contact with the lower portion of the second finding surface 71 of the refractory core material 7B, and the first upper horizontal plane 804 is in contact with the lower surface 75 of the refractory core material 7A. The second upper horizontal plane 814 is in contact with the lower surface 75 of the refractory core material 7B, and the first finding surface 80 is in contact with the first finding surface 200 of the first surface material 20. The second finding surface 81 is in contact with the second finding surface 210 of the second surface material 21.

The contact surface or seam between the refractory core material 8A and the refractory core materials 7A, 7B and the upper frame 3 is the upper surface 82 of the refractory core material 8A, the lower surface 33 of the upper frame 3, and the first upper finding surface of the refractory core material 8A. 800 and the lower part of the second found surface 71 of the refractory core material 7A, the second upper found surface 810 of the refractory core material 8A and the lower part of the second found surface 71 of the refractory core material 7B, the refractory core material 8A Cross-sectional view from the first upper horizontal plane 804 and the lower surface 75 of the refractory core material 7A, the second upper horizontal plane 814 of the refractory core material 8A and the lower surface 75 of the refractory core material 7B, the upper surface 82 of the refractory core material 8A and the lower surface 33 of the upper frame 3. Since it is formed in an upward convex shape, the heat transfer path through the contact surface or seam between the refractory core material 8A, the refractory core materials 7A, 7B, and the upper frame 3 is lengthened to suppress heat transfer.

The upper side 201 of the first surface material 20 and the upper surface 74 of the refractory core material 7A are in contact with each other, and the upper side 211 of the second surface material 21 and the upper surface 74 of the refractory core material 7B are in contact with each other. The height positions of the upper surface 74 of the refractory core material 7A and the upper surface 74 of the refractory core material 7B are located slightly above the outer surface of the upper surface portion 32 of the upper frame 3, and the upper side 201 of the first surface material 20 and A thermal expansion refractory member 14 is provided between the upper side 211 of the second surface material 21 and the upper surface portion 32 of the upper frame 3, and the upper side 201 of the first surface material 20 and the upper side 211 of the second surface material 21. The upper surface portion 32 of the upper frame 3 does not come into direct contact with the upper surface portion 32. The upper side 201 of the first surface material 20 is fixed to the upper surface portion 32 of the upper frame 3 filled with gypsum 9 by a screw 15. The screw 15 penetrates the thermal expansion refractory member 14, and the shaft portion of the screw 15 is screwed into the gypsum 9. The upper side 211 of the second surface material 21 is fixed to the upper surface portion 32 of the upper frame 3 filled with gypsum 9 by a screw 15. The screw 15 penetrates the thermal expansion refractory member 14, and the shaft portion of the screw 15 is screwed into the gypsum 9. Since the shaft portion of the screw 15 is supported by the gypsum 9, heat transfer through the metal screw 15 is suppressed by the endothermic effect of the gypsum 9. The edge of the upper side 201 of the first surface material 20 and the edge of the upper side 211 of the second surface material 21 are separated from each other, and the portion of the thermal expansion refractory member 14 is exposed.

When the door body 2 is in the fully closed posture, the upper surface of the door body 2 faces the first lower surface 102 of the upper frame 10 with a gap G, and the thermal expansion and fireproof member 14 expands by foaming due to the heat of a fire. Then, the gap G between the upper surface of the door body 2 and the first lower surface 102 of the upper frame 10 and / or the upper side 201 of the first surface material 20, the upper side 211 of the second surface material 21, and the upper surface portion 32 of the upper frame 3 The gap that may occur between them is closed in the opening width direction.

As shown in FIG. 8A, the upper surface 82'of the refractory core material 8B is in contact with the door end side portion of the lower surface 33 of the upper frame 3, and the upper portion of the first found surface 80'is the refractory core. The upper part of the second found surface 81'is in contact with the lower part of the second found surface 71 of the refractory core material 7B, and is in contact with the lower part of the second found surface 71 of the refractory core material 7B. 1 The lower part of the found surface 80'is in contact with the second found surface 71 of the refractory core material 7E, and the lower part of the second found surface 81' is in contact with the second found surface 71 of the refractory core material 7F. It is in contact.

In the door end side portion of the second finding surface 71 of the refractory core material 7A, the upper portion is in contact with the door end side portion of the outer surface of the first finding surface portion 30 of the upper frame 3, and the lower portion is the door tip. In the door tail side portion of the second finding surface 71 of the refractory core material 7A, the upper portion is the first viewing portion of the upper frame 3 which is in contact with the upper portion of the outer surface of the first finding surface portion 50 of the side vertical frame 5. The lower portion is in contact with the door tail side portion of the outer surface of the attached surface portion 30, and the lower portion is in contact with the upper portion of the outer surface of the first found surface portion 60 of the door tail side vertical frame 6 (see FIG. 8). Similarly, in the door end side portion of the second finding surface 71 of the refractory core material 7B, the upper portion is in contact with the door end side portion of the outer surface of the second finding surface portion 31 of the upper frame 3, and the lower portion. Is in contact with the upper part of the outer surface of the second found surface portion 51 of the door end side vertical frame 5, and in the door tail side portion of the second found surface 71 of the refractory core material 7B, the upper portion is the upper frame 3. The lower portion is in contact with the door tail side portion of the outer surface of the second finding surface portion 31, and the lower portion is in contact with the upper portion of the outer surface of the second finding surface portion 61 of the door tail side vertical frame 6.

[E-2] Configuration of Lower Part of Door Device As shown in FIG. 5, in the lower part of the door body 2, the lower part of the first found surface 200 of the first surface material 20 and the first view of the lower frame 4 A refractory core material 7C is provided between the surface material 40 and the lower portion of the second surface material 21 of the second surface material 21, and is located between the lower portion of the second surface material 21 and the second surface portion 41 of the lower frame 4. A refractory core material 7D is provided. By sandwiching the refractory core materials 7C and 7D between the first surface material 20 and the lower frame 4, and the second surface material 21 and the lower frame 4, respectively, the first surface material 20, the second surface material 21 and the lower frame 4 can be obtained. Direct contact is restricted to prevent heat from being directly transferred from the first surface material 20 to the lower frame 4 or from the second surface material 21 to the lower frame 4.

The inner surface of the first found surface 70 of the refractory core material 7C and the inner surface of the first found surface 200 of the first surface material 20 are in contact with each other, and the lower portion of the second found surface 71 is the first found surface of the lower frame 4. It is in contact with the outer surface of the surface portion 40. The height dimension of the fire-resistant core material 7C is larger than the height dimension of the lower frame 4, and the upper portion of the fire-resistant core material 7C extends upward beyond the upper surface 43 of the lower frame 4, and the first surface material 20 The heat transfer path (heat transfer path through the contact surface or seam between the fire-resistant core material 7C and the fire-resistant core material 8A) between the first finding surface 200 of the above and the first finding surface portion 40 of the lower frame 4 is lengthened. It suppresses heat transfer.

The first found surface 70 of the refractory core material 7D and the inner surface of the second found surface 210 of the second surface material 21 are in contact with each other, and the lower portion of the second found surface 71 is the second found surface of the lower frame 4. It is in contact with the outer surface of the surface portion 41. The height dimension of the fire-resistant core material 7D is larger than the height dimension of the lower frame 4, and the upper portion of the fire-resistant core material 7D extends upward beyond the upper surface 43 of the lower frame 4, and the second surface material 21 The heat transfer path (heat transfer path through the contact surface or seam of the fire-resistant core material 7D and the fire-resistant core material 8A) between the second found surface 210 of the above and the second found surface portion 41 of the lower frame 4 is lengthened. It suppresses heat transfer.

The lower surface 83 of the lower peripheral edge of the refractory core material 8A is in contact with the upper surface 43 of the lower frame 4, and the first lower finding surface 801 is above the second finding surface 71 of the refractory core material 7C. The second lower found surface 811 is in contact with the upper portion of the second found surface 71 of the refractory core material 7D, and the first lower horizontal plane 805 is the refractory core material 7A. The second lower horizontal plane 815 is in contact with the upper surface 75 of the refractory core material 7B, and the first finding surface 80 is in contact with the first finding surface 200 of the first surface material 20. The second found surface 81 is in contact with the second found surface 210 of the second surface material 21.

The contact surface or seam between the refractory core material 8A and the refractory core materials 7C, 7D and the lower frame 4 is found on the lower surface 83 of the refractory core material 8A, the upper surface 43 of the lower frame 4, and the first lower side of the refractory core material 8A. The upper part of the surface 801 and the second found surface 71 of the refractory core material 7C, the upper part of the second lower found surface 811 of the refractory core material 8A and the second found surface 71 of the refractory core material 7D, the refractory core material. The first lower horizontal plane 805 of 8A and the upper surface 75 of the refractory core material 7C, the second lower horizontal plane 815 of the refractory core material 8A and the upper surface 75 of the refractory core material 7D, the lower surface 83 of the refractory core material 8A and the upper surface of the lower frame 4. Since it is formed in a downward convex shape in a cross-sectional view from 43, the heat transfer path through the contact surface or seam between the refractory core material 8A and the refractory core materials 7C, 7D and the lower frame 4 is lengthened to suppress heat transfer. ing.

The lower side 202 of the first surface material 20 and the lower surface 74 of the refractory core material 7C are in contact with each other, and the lower side 212 of the second surface material 21 and the lower surface 74 of the refractory core material 7D are in contact with each other. The height positions of the lower surface 74 of the refractory core material 7C and the lower surface 74 of the refractory core material 7D are located slightly below the outer surface of the lower surface portion 42 of the lower frame 4, and the lower side 202 of the first surface material 20 and A thermal expansion refractory member 14 is provided between the lower side 212 of the second surface material 21 and the lower surface portion 42 of the lower frame 4, and the lower side 202 of the first surface material 20 and the lower side 212 of the second surface material 21. The lower surface portion 42 of the lower frame 4 does not come into direct contact with the lower surface portion 42. The lower side 202 of the first surface material 20 is fixed to the lower surface portion 42 of the lower frame 4 filled with gypsum 9 by screws 15. The screw 15 penetrates the thermal expansion refractory member 14, and the shaft portion of the screw 15 is screwed into the gypsum 9. The lower side 212 of the second surface material 21 is fixed to the lower surface portion 42 of the lower frame 4 filled with gypsum 9 by a screw 15. The screw 15 penetrates the thermal expansion refractory member 14, and the shaft portion of the screw 15 is screwed into the gypsum 9. Since the shaft portion of the screw 15 is supported by the gypsum 9, heat transfer through the metal screw 15 is suppressed by the endothermic effect of the gypsum 9. The edge of the lower side 202 of the first surface material 20 and the edge of the lower side 212 of the second surface material 21 are separated from each other, and the portion of the thermal expansion refractory member 14 is exposed.

When the door body 2 is in the fully closed posture, the lower surface of the door body 2 faces the upper surface 112 of the lower frame 11 with a gap G, and the thermal expansion and fireproof member 14 foams and expands due to the heat of a fire. A gap G between the lower surface of the door body 2 and the upper surface 112 of the lower frame 11 and / or may occur between the lower side 202 of the first surface material 20, the lower side 212 of the second surface material 21, and the lower surface portion 42 of the lower frame 4. The gap is closed in the opening width direction.

As shown in FIG. 8A, the lower surface 83'of the refractory core material 8E is in contact with the door end side portion of the upper surface 43 of the lower frame 4, and the lower portion of the first found surface 80'is the refractory core. The lower part of the second found surface 81'is in contact with the upper part of the second found surface 71 of the material 7C, and the lower part of the second found surface 81'is in contact with the upper part of the second found surface 71 of the refractory core material 7D. 1 The upper part of the found surface 80'is in contact with the second found surface 71 of the refractory core material 7E, and the upper part of the second found surface 81' is in contact with the second found surface 71 of the refractory core material 7F. It is in contact.

In the door end side portion of the second finding surface 71 of the refractory core material 7C, the lower portion is in contact with the door end side portion of the outer surface of the first finding surface portion 40 of the lower frame 4, and the upper portion is the door tip. It is in contact with the lower portion of the outer surface of the first finding surface portion 50 of the side vertical frame 5, and in the door tail side portion of the second finding surface 71 of the refractory core material 7C, the lower portion is the first portion of the lower frame 4. The upper portion is in contact with the door tail side portion of the outer surface of the finding surface portion 40, and the upper portion is in contact with the lower portion of the outer surface of the first finding surface portion 60 of the door tail side vertical frame 6 (see FIG. 8). Similarly, in the door end side portion of the second finding surface 71 of the refractory core material 7D, the lower portion is in contact with the door end side portion of the outer surface of the second finding surface portion 41 of the lower frame 4, and the upper portion. Is in contact with the lower portion of the outer surface of the second finding surface portion 51 of the door end side vertical frame 5, and in the door tail side portion of the second finding surface 71 of the refractory core material 7C, the lower portion is the lower frame 4 The upper portion is in contact with the door tail side portion of the outer surface of the second finding surface portion 41 of the above, and the upper portion is in contact with the lower portion of the outer surface of the second finding surface portion 61 of the door tail side vertical frame 6.

[E-3] Configuration of Door End Side Part of Door Device As shown in FIG. 6, in the door tip side portion of the door body 2, the door end side portion and the door of the first found surface 200 of the first surface material 20 A refractory core material 7E is provided between the front side vertical frame 5 and the outer surface of the first found surface portion 50, and the door end side portion and the door tip of the second found surface 210 of the second surface material 21. A refractory core material 7F is provided between the side vertical frame 5 and the outer surface of the second finding surface portion 51. By sandwiching the refractory core materials 7E and 7F between the first surface material 20 and the door end side vertical frame 5, and between the second surface material 21 and the door end side vertical frame 5, respectively, the first surface material 20 and the second surface material Direct contact between 21 and the door-to-door vertical frame 5 is restricted, and heat is directly transferred from the first surface material 20 to the door-to-door vertical frame 5 or from the second surface material 21 to the door-to-door vertical frame 5. It prevents you from doing it.

The inner surface of the first finding surface 70 of the refractory core material 7E and the inner surface of the first finding surface 200 of the first surface material 20 are in contact with each other, and the door end side portion of the second finding surface 71 is the door end side vertical frame 5. It is in contact with the outer surface of the first finding surface portion 50 of the above. The found size of the fire-resistant core material 7E is larger than the found size of the door-end side vertical frame 5, and the door-tail side portion of the fire-resistant core material 7E exceeds the door-end side prospective surface 53 of the door-end side vertical frame 5. A heat transfer path (fire-resistant core material 7E and fire-resistant core material) extending to the door end side between the first finding surface 200 of the first surface material 20 and the first finding surface portion 50 of the door-end vertical frame 5. The heat transfer path through the contact surfaces or seams of 8A, 8B to 8E) is lengthened to suppress heat transfer.

Further, the found size of the fireproof core material 7E is larger than the found size of the locks (1st lock 24, 2nd lock 25, 3rd lock) built in the door end side portion of the door body 2, and the fireproof core material 7E has a found size. The door tail side portion of the material 7E includes the door tail side end faces 2400, 2500, 2600 of the lock cases 240, 250, 260, and the contact surface or seam and space S between the fire resistant core materials 8B to 8E and the fire resistant core material 8A. The heat transfer path (fireproof core material) between the first finding surface 200 of the first surface material 20 and the locks (first lock 24, second lock 25, third lock) extends beyond the door tail side. The heat transfer path through the contact surface or seam between the 7E and the fireproof core material 8A) is lengthened to suppress heat transfer.

The first finding surface 70 of the refractory core material 7F and the inner surface of the second finding surface 210 of the second surface material 21 are in contact with each other, and the door end side portion of the second finding surface 71 is the door end side vertical frame 5. It is in contact with the outer surface of the second finding surface portion 51 of the above. The found size of the fire-resistant core material 7F is larger than the found size of the door-end side vertical frame 5, and the door-tail side portion of the fire-resistant core material 7F exceeds the door-end side prospective surface 53 of the door-end side vertical frame 5. The heat transfer path (fire-resistant core material 7F and fire-resistant core material) extending to the door end side between the second found surface 210 of the second surface material 21 and the second found surface portion 51 of the door end side vertical frame 5. The heat transfer path through the contact surfaces or seams of 8A, 8B to 8E) is lengthened to suppress heat transfer.

Further, the found size of the fireproof core material 7F is larger than the found size of the locks (1st lock 24, 2nd lock 25, 3rd lock) built in the door end side portion of the door body 2, and the fireproof core material 7F has a found size. The door tail side portion of the material 7F includes the door tail side end faces 2400, 2500, 2600 of the lock cases 240, 250, 260, and the contact surface or seam and space S between the fire resistant core materials 8B to 8E and the fire resistant core material 8A. The heat transfer path (fireproof core material) between the second found surface 210 of the second surface material 21 and the locks (first lock 24, second lock 25, third lock) extends beyond the door end. The heat transfer path through the contact surface or seam between the 7F and the fireproof core material 8A) is lengthened to suppress heat transfer.

The edge of the refractory core 8A on the door end side and the refractory core materials 8B to 8E are integrated to form the edge of the first refractory core material 8 on the door end side. That is, when viewed as a whole of the first refractory core material 8, the upper peripheral edge portion, the lower peripheral edge portion, and the door tail side peripheral edge portion of the fireproof core material 8A are the upper peripheral edge portion and the lower peripheral edge portion of the first refractory core material 8, respectively. The door end side peripheral portion of the first refractory core material 8 is formed of the door tip side peripheral portion of the refractory core material 8A and the refractory core materials 8B to 8E. The door end side peripheral portion of the first refractory core material 8 includes the door end side portion of the four-circumferential frame (the door end side vertical frame 5 and the door end side portion of the upper frame 3 and the lower frame 4) and the second fire resistance. In the concave portion formed of the core materials 7E, 7F, 7A, 7B, 7C, and 7D, the refractory core material 8A is divided into a door end side peripheral portion and a refractory core material 8B to 8E. The door end side prospective surface 87 of the refractory core materials 8B to 8E is in contact with the door end side prospective surface 53 of the door end side vertical frame 5. The first finding surface 802 of the refractory core material 8A and the first finding surface 80'of the refractory core materials 8B to 8E integrally form the first finding surface of the first refractory core material 8. The first finding surface on the door end side is in contact with the second finding surface 71 of the refractory core material 7E. The second finding surface 812 of the refractory core material 8A and the second finding surface 81'of the refractory core materials 8B to 8E integrally form the second finding surface of the first refractory core material 8. The second finding surface on the front end side is in contact with the second finding surface 71 of the refractory core material 7F. The vertical surface 806 on the first door end side of the refractory core material 8A is in contact with the prospective surface 75 of the fireproof core material 7G, and the vertical surface 816 on the second door end side is in contact with the prospective surface 75 of the refractory core material 7F. The first finding surface 80 is in contact with the first finding surface 200 of the first surface material 20, and the second finding surface 81 is attached to the second finding surface 210 of the second surface material 21. It is in contact.

The contact surface or seam between the refractory core material 8A and the refractory core materials 7E, 7F, and the refractory core materials 8B to 8E is the first side finding surface 802 of the refractory core material 8A and the second view of the refractory core material 7E. Door tail side part of the attached surface 71, second door end side finding surface 812 of the refractory core material 8A, door tail side part of the second found surface 71 of the fire resistant core material 7F, first door end of the fire resistant core material 8A Side vertical surface 806 and prospective surface 75 of fireproof core material 7E, second vertical surface 816 of fireproof core material 8A and prospective surface 75 of fireproof core material 7F, door end side prospective surface 84 of fireproof core material 8A and fireproof The core materials 8B to 8E are formed in a substantially convex shape in a lateral direction in a cross-sectional view from the door tail side prospective surface 88, and further, the door end side prospective surface 84 of the refractory core material 8A and the door tail side of the refractory core materials 8B to 8E. The prospective surface 88 is in contact with the first surface 840, the second surface 841, and the third surface 842 by forming a space S by the first surface 880, the second surface 881, and the third surface 882. The heat transfer path through the contact surface or seam between the material 8A and the refractory core materials 7E and 7F and the refractory core materials 8B to 8E is lengthened to suppress heat transfer.

As shown in FIG. 8A, in the present embodiment, the door end side peripheral portion of the first refractory core material 8 is the door end side peripheral portion of the first door end side adjacent to the upper side of the second lock 25 (the door end of the refractory core material 8A). Side peripheral edge + refractory core material 8B) and the second peripheral edge on the door end side adjacent to the lower side of the second lock 25 and adjacent to the upper side of the first lock 24 (refractory side peripheral edge of the refractory core material 8A + Refractory core material 8C) and the third door-to-door peripheral edge (fire-resistant core material 8A door-to-door peripheral edge + refractory core material 8D) adjacent to the lower side of the first lock 24 and adjacent to the upper side of the third lock 26. ) And the fourth door end side peripheral portion (the door end side peripheral portion of the refractory core material 8A + the refractory core material 8E) adjacent to the lower side of the third lock 26. For the first lock 24, the peripheral edge on the second door tip side is the peripheral edge portion on the upper door tip side, the peripheral edge portion on the third door tip side is the peripheral edge portion on the lower door tip side, and for the second lock 25, the first door The front peripheral edge is the upper door tip side peripheral edge, the second door tip side peripheral edge is the lower door tip side peripheral edge, and for the third lock 26, the third door tip side peripheral edge is the upper door tip side peripheral edge. The fourth door-end side peripheral portion is the lower door-end side peripheral portion. As shown in FIG. 8A, the first lock 24 has a second found surface 71 of the refractory core material 7E, a second found surface 71 of the refractory core material 7F, a lower surface 83'of the refractory core material 8C, and a refractory core material 8D. The upper surface 82'is surrounded by an intermediate prospective surface 843 of the refractory core material 8A. The second tablet 25 has a second found surface 71 of the refractory core material 7E, a second found surface 71 of the refractory core material 7F, a lower surface 83 ′ of the refractory core material 8B, and an upper surface 82 ′ of the refractory core material 8C. It is surrounded by an intermediate prospect surface 843 of 8A. The third lock 26 has a second found surface 71 of the refractory core material 7E, a second found surface 71 of the refractory core material 7F, a lower surface 83'of the refractory core material 8D, an upper surface 82'of the refractory core material 8E, and a refractory core. It is surrounded by an intermediate prospective surface 843 of the material 8A. Further, the rod 27 extending between the first lock 24 and the second lock 25 and between the first lock 24 and the third lock 26 is a space S surrounded by the refractory core material 8A and the refractory core materials 8C and 8D. Located inside. With this configuration, the temperature rise of the first tablet 24, the second tablet 25, the third tablet 26, and the rod 27 due to the heat from the heating surface is suppressed, and the first tablet 24, the second tablet 25, and the third tablet are suppressed. Heat transfer to the non-heated surface side via the lock 26 and the rod 27 is suppressed.

The first side side 203 of the first surface material 20 and the prospective surface 74 of the refractory core material 7E are in contact with each other, and the side side 213 of the second surface material 21 and the prospective surface 74 of the refractory core material 7F are in contact with each other. The positions of the prospective surface 74 of the refractory core material 7E and the prospective surface 74 of the refractory core material 7F are slightly closer to the door end side than the outer surface of the prospective surface portion 52 of the door end side vertical frame 5, and the first surface material. A thermal expansion refractory member 14 is provided between the first side side 203 of 20 and the first side side 213 of the second surface material 21 and the prospective surface portion 52 of the door end side vertical frame 5, and the first surface material is provided. The first side side 203 of 20 and the first side side 213 of the second surface material 21 and the prospective surface portion 52 of the door end side vertical frame 5 do not come into direct contact with each other. The first side side 203 of the first surface material 20 is fixed to the prospective surface portion 52 of the door end side vertical frame 5 filled with gypsum 9 by a screw 15. The screw 15 penetrates the thermal expansion refractory member 14, and the shaft portion of the screw 15 is screwed into the gypsum 9. The first side side 213 of the second surface material 21 is fixed to the prospective surface portion 52 of the door end side vertical frame 5 filled with gypsum 9 by a screw 15. The screw 15 penetrates the thermal expansion refractory member 14, and the shaft portion of the screw 15 is screwed into the gypsum 9. Since the shaft portion of the screw 15 is supported by the gypsum 9, heat transfer through the metal screw 15 is suppressed by the endothermic effect of the gypsum 9. The edge of the first side side 203 of the first surface material 20 and the edge of the first side side 213 of the second surface material 21 are separated from each other, and the portion of the thermal expansion refractory member 14 is exposed.

When the door body 2 is in the fully closed position, the door end side prospective surface of the door body 2 faces the first prospective surface 122 of the door end side vertical frame 12 with a gap G, and is thermally expanded by the heat of a fire. As the fireproof member 14 expands by foaming, the gap G between the door end side prospective surface of the door body 2 and the first prospective surface 122 of the door end side vertical frame 12 and / or the first side side 203 of the first surface material 20 , The gap that may occur between the first side side 213 of the second surface material 21 and the prospective surface portion 52 of the door end side vertical frame 5 is closed over the opening height direction.

[E-4] Configuration of Door Bottom Side Part of Door Device As shown in FIG. 7, in the door tail side part of the door body 2, the door tail side part and the door of the first found surface 200 of the first surface material 20 A fireproof core material 7G is provided between the first finding surface portion 60 of the tail side vertical frame 6, and the door tail side portion and the door tail side vertical portion of the second finding surface 210 of the second surface material 21. A fireproof core material 7H is provided between the frame 6 and the second finding surface portion 61. By sandwiching the refractory core materials 7G and 7H between the first surface material 20 and the door tail side vertical frame 6, and between the second surface material 21 and the door tail side vertical frame 6, respectively, the first surface material 20 and the second surface material Direct contact between 21 and the door butt side vertical frame 6 is restricted, and heat is directly transferred from the first surface material 20 to the door butt side vertical frame 6 or from the second surface material 21 to the door butt side vertical frame 6. It prevents you from doing it.

The inner surface of the first finding surface 70 of the refractory core material 7G and the inner surface of the first finding surface 200 of the first surface material 20 are in contact with each other, and the door tail side portion of the second finding surface 71 is the door tail side vertical frame 6. It is in contact with the outer surface of the first finding surface portion 60 of the above. The found size of the fire-resistant core material 7G is larger than the found size of the door-tail side vertical frame 6, and the door-end side portion of the fire-resistant core material 7G exceeds the door-end side prospective surface 63 of the door-tail side vertical frame 6. A heat transfer path (fire-resistant core material 7G and fire-resistant core material) extending to the door end side between the first finding surface 200 of the first surface material 20 and the first finding surface portion 60 of the door tail side vertical frame 6. The heat transfer path through the contact surface or the seam of 8A) is lengthened to suppress heat transfer.

The inner surface of the first finding surface 70 of the refractory core material 7H and the inner surface of the second finding surface 210 of the second surface material 21 are in contact with each other, and the door tail side portion of the second finding surface 71 is the door tail side vertical frame 6. It is in contact with the outer surface of the second finding surface portion 61 of the above. The found dimension of the fire-resistant core material 7H is larger than the found dimension of the door-tail side vertical frame 6, and the door-end side portion of the fire-resistant core material 7H exceeds the door-end side prospective surface 63 of the door-tail side vertical frame 6. A heat transfer path (fireproof core material 7H and fireproof core material) extending to the door end side between the second found surface 210 of the second surface material 21 and the second found surface portion 61 of the door tail side vertical frame 6. The heat transfer path through the contact surface or the seam of 8A) is lengthened to suppress heat transfer.

The prospective surface 85 of the peripheral edge portion of the fireproof core material 8A on the door tail side is in contact with the prospective surface 63 of the door end side of the door tail side vertical frame 6, and the first door tail side finding surface 803 is the fireproof core material. The second found surface 71 of 7G is in contact with the door end side portion, and the second door tail side finding surface 813 is in contact with the door end side portion of the second found surface 71 of the refractory core material 7H. The first door tail side vertical surface 807 is in contact with the prospective surface 75 of the refractory core material 7G, and the second door tail side vertical surface 817 is in contact with the prospective surface 75 of the refractory core material 7H. The first finding surface 80 is in contact with the first finding surface 200 of the first surface material 20, and the second finding surface 81 is in contact with the second finding surface 210 of the second surface material 21. There is.

The contact surface or seam between the refractory core material 8A and the refractory core materials 7G, 7H, and the door tail side vertical frame 6 is the first door tail side finding surface 803 of the refractory core material 8A and the second view of the refractory core material 7G. The door end side part of the attached surface 71, the second door tail side finding surface 813 of the refractory core material 8A and the door end side part of the second founding surface 71 of the refractory core material 7H,
The vertical surface 807 on the first door tail side of the refractory core material 8A and the prospective surface 75 of the fireproof core material 7G, the vertical surface 817 on the second door tail side of the refractory core material 8A and the prospective surface 75 of the fireproof core material 7H, the refractory core material 8A Since the refractory core material 8A, the refractory core materials 7G, 7H, and the door tail side vertical frame 6 are formed from the prospective surface 85 and the door end side prospective surface 63 of the door tail side vertical frame 6 in a laterally convex shape in a cross-sectional view. The heat transfer path through the contact surface or the seam is lengthened to suppress heat transfer.

The second side side 204 of the first surface material 20 and the prospective surface 74 of the refractory core material 7G are in contact with each other, and the second side side 214 of the second surface material 21 and the prospective surface 74 of the refractory core material 7H are in contact with each other. There is. The positions of the prospective surface 74 of the fire-resistant core material 7G and the prospective surface 74 of the fire-resistant core material 7H are located slightly closer to the door tail side than the outer surface of the prospective surface portion 62 of the door tail side vertical frame 6, and are the first surface material. A thermal expansion refractory member 14 is provided between the second side side 204 of 20 and the second side side 214 of the second surface material 21 and the prospective surface portion 62 of the door tail side vertical frame 6, and the first surface material. The second side side 204 of 20 and the second side side 214 of the second surface material 21 and the prospective surface portion 62 of the door tail side vertical frame 6 do not come into direct contact with each other. The second side side 204 of the first surface material 20 is fixed to the prospective surface portion 62 of the door tail side vertical frame 6 filled with gypsum 9 by a screw 15. The screw 15 penetrates the thermal expansion refractory member 14, and the shaft portion of the screw 15 is screwed into the gypsum 9. The second side side 214 of the second surface material 21 is fixed to the prospective surface portion 62 of the door tail side vertical frame 6 filled with gypsum 9 by a screw 15. The screw 15 penetrates the thermal expansion refractory member 14, and the shaft portion of the screw 15 is screwed into the gypsum 9. Since the shaft portion of the screw 15 is supported by the gypsum 9, heat transfer through the metal screw 15 is suppressed by the endothermic effect of the gypsum 9. The edge of the second side side 204 of the first surface material 20 and the edge of the second side side 214 of the second surface material 21 are separated from each other, and the portion of the thermal expansion refractory member 14 is exposed.

When the door body 2 is in the fully closed position, the door tail side prospective surface of the door body 2 faces the first prospective surface 132 of the door tail side vertical frame 13 with a gap G, and is thermally expanded by the heat of a fire. As the fireproof member 14 foams and expands, the gap G between the door tail side prospective surface of the door body 2 and the first prospective surface 132 of the door tail side vertical frame 13 and / or the second side side 204 of the first surface material 20 The gap that may occur between the second side side 214 of the second surface material 21 and the prospective surface portion 62 of the door tail side vertical frame 6 is closed in the opening height direction.

[F] Other Embodiments FIGS. 13 to 16 show another embodiment of the door body 2. The same reference numbers are assigned to the elements common to the first embodiment described above, and the description relating to the above-described embodiment can be appropriately incorporated in the description of the common elements. Further, since the basic configuration of the heat-shielding door body 2 is common to all the embodiments, even if the matters are not shown in FIGS. 13 to 16, the description according to the first embodiment is described. It can be referred to as appropriate.

[F-1] Second Embodiment of Door Body In the second embodiment shown in FIG. 13, the first refractory core material 8 is integrally formed from one member (first refractory core material 8'). More specifically, the first refractory core material 8'is a combination of the peripheral portion of the refractory core material 8A of the first embodiment on the door end side and the refractory core materials 8B to 8E, and is on the door end side. A space S for receiving the rod 27 is formed by drilling a predetermined position of the peripheral edge portion in the height direction. In the second embodiment, there are few defects in the refractory core material as compared with the one in which the first refractory core material 8 is divided, and the first refractory core material 8'has no seams, so that the heat shielding property is good.

[F-2] Third Embodiment of Door Body The basic configuration of the third embodiment shown in FIG. 14 is the same as that of the first embodiment, and the description of the first embodiment can be incorporated. The third embodiment differs from the first embodiment in that the door end side prospective surface of the refractory core material 8A ′ constituting the first refractory core material 8 and the door end side prospective surface of the refractory core materials 8B ′ to 8E ′. It is in the shape of the contact surface or seam. In the third embodiment, the heat-shielding property of the contact surface is improved by increasing the width of the gap between the contact surfaces.

[F-3] Fourth Embodiment of Door Body The feature of the fourth embodiment shown in FIG. 15 is provided so as to be located between the first surface material 20, the second surface material 21, and the four-circumferential frame. The second refractory core materials 7I and 7J are arranged over the entire finding surface of the door body 2. In the fourth embodiment, since there is no joint (contact surface or seam extending in the thickness direction of the door body 2) between the second refractory core materials 7I and 7J and the first refractory core material 8 ″, heat shielding property is provided. Is improved. Similar to the second embodiment, the space S for receiving the rod 27 is formed by drilling a predetermined position of the door end side portion of the first refractory core material 8 ″ in the height direction.

[F-4] Fifth Embodiment of Door Body The features of the fifth embodiment shown in FIG. 16 are the first surface material 20, the second surface material 21, and the four-circumferential frame, as in the fourth embodiment. The second refractory core materials 7I and 7J provided between the two are arranged over the entire finding surface of the door body 2. In the fifth embodiment, since there is no joint (contact surface or seam extending in the thickness direction of the door body 2) between the second refractory core materials 7I and 7J and the first refractory core material 8 ″, heat shielding property is provided. Is improved. The fifth embodiment is different from the fourth embodiment by dividing the first refractory core material 8 ″ of the fourth embodiment into the first refractory core materials 8F and 8G in the thickness direction, and the first refractory core material. A space S for receiving the rod 27 is formed at the contact surface or the seam by combining the recesses extending in the height direction formed on the facing surfaces of the 8F and 8G, respectively. That is, the first refractory core material 8 ″ is located in the space S and is divided along the height direction of the space S, the first element (refractory core material 8F) and the second element (refractory core material 8G). The first element (refractory core material 8F) is provided with a first contact surface and a first portion (concave portion) extending in the height direction, and the second element (refractory core material 8G) is a second element. A second portion (concave portion) extending in the height direction is provided with the contact surface, and the space S is in a state where the first contact surface of the first element and the second contact surface of the second element are in contact with each other. It is formed from the first portion (concave portion) and the second portion (concave portion).

[G] Manufacturing method of door device [G-1] Manufacturing method of door frame The door frame 1 is obtained by assembling the upper frame 10, the lower frame 11, the door end side vertical frame 12, and the door tail side vertical frame 13 in a four-circle shape. .. Welding is exemplified as a connecting means for the upper frame 10, the lower frame 11, the door end side vertical frame 12, and the door end side vertical frame 13. Select one frame from the upper frame 10, the lower frame 11, the door end side vertical frame 12, and the door end side vertical frame 13 of the door frame 1, pour the plaster 9 and solidify it in the frame, and then the remaining three. Select one frame from the frame, pour the gypsum 9 and solidify in the frame, then select one frame from the remaining two frames, pour the gypsum 9 and solidify in the frame, and the last one By pouring gypsum 9 into one frame and solidifying it in the frame, a door frame 1 filled with gypsum 9 is manufactured and installed in the opening.

[G-2] Method for Manufacturing Door Body A method for manufacturing the door body 2 will be described based on the first embodiment. 1st surface material 20, 2nd surface material 21, upper frame 3, lower frame 4, door end side vertical frame 5, door tail side vertical frame 6, refractory core material 7A to 7H, refractory core material 8A to 8E, first A lock device including a lock 24, a second lock 25, a third lock 26, and a rod 27, a thermal expansion refractory member 14, and a screw 15 are prepared. Upper frame 3, lower frame 4, lower frame 4, lower frame 4, lower frame 4, lower frame 4, lower frame 4, lower frame 4, lower frame 4, lower frame 4, lower frame 4, lower frame 4, lower frame 4, lower frame 4, lower frame 4, lower frame 4, lower frame 4, lower frame 4, lower frame 4, lower frame 4, lower frame 4, the upper frame 3, lower frame 4, A vertical frame 5 on the door end side and a vertical frame 6 on the door tail side are obtained. The thermal expansion refractory member 14 is a long tape-shaped member having a predetermined width and having an adhesive layer, and prior to assembling the door body 2, the outer surface of the upper surface portion 32 of the upper frame 3 and the lower surface portion 42 of the lower frame 4 It is attached to the outer surface, the outer surface of the prospective surface portion 52 of the door end side vertical frame 5, and the outer surface of the prospective surface portion 62 of the door end side vertical frame 6. In the steps described below, the back surfaces of the first surface material 20 and the second surface material 21 and the surfaces with which the refractory core materials 7A to 7H and the refractory core material 8A abut may be brought into close contact with each other with an adhesive or the like.

(1) The main surface portion 200 of the first surface material 20 is placed on a flat surface such as a floor surface. At this time, the back surface of the main surface portion 200 of the first surface material 20 faces upward, and the upper side 201, the lower side 202, the first side side 203, and the second side side 204 stand up vertically.

(2) The refractory core materials 7A, 7C, 7E, and 7G are placed around the back surface of the main surface portion 200 of the first surface material 20 in a four-circle shape. At this time, the first finding surface 70 of each refractory core material 7A, 7C, 7E, 7G abuts on the back surface of the main surface portion 200, and the third end surface 74 is the upper side 201, the lower side 202, the first side side 203, and the third, respectively. The first end surface 72 and the second end surface 73 of the refractory core materials 7A and 7C abut on the inner surfaces of the two side sides 204, respectively, and abut on the inner surfaces of the first side side 203 and the second side side 204, respectively. The first end surface 72 and the second end surface 73 of 7G abut on the fourth end surfaces (lower surface 75, upper surface 75) of the refractory core materials 7A and 7C, respectively.

(3) The upper frame 3, the lower frame 4, the door end side vertical frame 5, and the door tail side vertical frame 6 are mounted on the main surface portion 200 of the first surface material 20 and the refractory core materials 7A, 7C, 7E, and 7G. Place. The upper frame 3 is placed on the refractory core material 7A along the upper side 201 of the first surface material 20, and the lower frame 4 is placed on the refractory core material 7C along the lower side 202. The door end side vertical frame 5 is placed on the refractory core material 7E along 203, and the door tail side frame 6 is placed on the refractory core material 7G along the second side side 204. The order in which the upper frame 3, the lower frame 4, the door end side vertical frame 5, and the door end side vertical frame 6 are placed does not matter. In a four-circle frame consisting of an upper frame 3, a lower frame 4, a door end side vertical frame 5, and a door end side vertical frame 6, the outer surfaces of the first found surface portions 30, 40, 50, and 60 are each made of a refractory core material. It is in contact with the second finding surface 71 of 7A, 7C, 7E, and 7G. The outer surface of the upper surface portion 32 of the upper frame 3, the lower surface portion 42 of the lower frame 4, the door end side vertical frame 5, the prospective surface portions 52 and 62 of the door tail side vertical frame 6, and the upper side 201 and lower side 202 of the first surface material 20. , A half portion of the thermal expansion refractory member 14 in the width direction is sandwiched between the inner surface of the first side side 203 and the inner surface of the second side side 204, respectively.

(4) The upper side 201 is fixed to the upper surface portion 32 by using a screw 15 with the thermal expansion refractory member 14 sandwiched between the upper side 201 of the first surface material 20 and the upper surface portion 32 of the upper frame 3. The shaft portion of the screw 15 penetrates the upper surface portion 32 and is screwed into the gypsum 9 filled in the upper frame 3. With the thermal expansion refractory member 14 sandwiched between the lower side 202 of the first surface material 20 and the lower surface portion 42 of the lower frame 4, the lower side 202 is fixed to the lower surface portion 42 using screws 15. The shaft portion of the screw 15 penetrates the lower surface portion 42 and is screwed into the gypsum 9 filled in the lower frame 4. With the thermal expansion refractory member 14 sandwiched between the first side side 203 of the first surface material 20 and the prospective surface portion 52 of the door end side vertical frame 5, the screw 15 is used on the prospective surface portion 52 of the first side side 203. Fix it. The shaft portion of the screw 15 penetrates the prospective surface portion 52 and is screwed into the gypsum 9 filled in the vertical frame 5 on the door end side. With the thermal expansion refractory member 14 sandwiched between the second side side 204 of the first surface material 20 and the prospective surface portion 62 of the door tail side vertical frame 6, the screw 15 is used on the prospective surface portion 62 of the second side side 204. Fix it. The shaft portion of the screw 15 penetrates the prospective surface portion 62 and is screwed into the plaster 9 filled in the door tail side vertical frame 6.

(5) In a space surrounded by a four-circumferential frame consisting of an upper frame 3, a lower frame 4, a vertical frame on the door end side, and a vertical frame on the door tail side 6, the main surface portion 200 of the first surface material 20 and a refractory core The refractory core material 8A is superposed on the materials 7A, 7C, 7E, and 7G. The shape and dimensions of the first finding surface 80 of the refractory core material 8A are the fourth of the refractory core materials 7A, 7C, 7E, and 7G placed in a four-circumferential manner on the back surface of the main surface portion 200 of the first surface material 20. It is substantially the same as the square region surrounded by the end surface 75 (the back surface of the main surface portion 200 of the first surface material 20 is exposed), and the first found surface 80 of the refractory core material 8A is the first surface material. It abuts on the back surface of the main surface portion 200 of 20. The first upper side finding surface 800, the first lower side finding surface 801 and the first door end side finding surface 802, and the first door tail side finding surface 803 of the refractory core material 8A are the fireproof core materials 7A and 7C, respectively. , 7E, 7G abut on the second finding surface 71, and the first upper horizontal plane 804, the first lower horizontal plane 805, the first door end side vertical surface 806, and the first door tail side vertical surface 807 are fireproof, respectively. It is in contact with the fourth end surface 75 of the core materials 7A, 7C, 7E, and 7G. The order in which the upper frame 3, the lower frame 4, the door end side vertical frame 5, the door tail side vertical frame 6, and the refractory core material 8A are placed is not limited, and the upper frame 3 is placed after the refractory core material 8A is placed. , The lower frame 4, the door end side vertical frame 5, and the door end side vertical frame 6 may be placed.

(6) The first lock 24, the second lock 25, and the third lock 26 are provided at predetermined positions of the door end side vertical frame 5, and the first lock 24 and the third lock are between the first lock 24 and the second lock 25. Set the rod 27 between 26. The rod 27 is located on the third surface 842 of the refractory core material 8A.

(7) The refractory core materials 8B to 8E are superposed on the door end side portion of the refractory core material 8A and the predetermined positions on the second finding surface 71 of the refractory core material 7E. At this time, the first finding surface 80'of each refractory core material 8B to 8E is in contact with the second finding surface 71 of the refractory core material 7E, and one of the first surfaces 880 of each refractory core material 8B to 8E. The portion abuts on the first surface 840 of the refractory core material 8A, and the second surface 881 of each refractory core material 8B to 8E abuts on a part of the second surface 841 of the refractory core material 8A. The third surface 882 of the refractory core materials 8C and 8D is placed so as to cover the rod 27. The lower surface 33 of the upper frame 3, the upper surface 43 of the lower frame 4, the door end side prospective surface 53 of the door end side vertical frame 5, and the door end side prospective surface 63 of the door tail side vertical frame 6 are each made of a refractory core material 8A. In contact with the upper surface 82, 82'of 8B, the lower surfaces 83, 83'of the refractory core materials 8A, 8E, the door end side prospective surface 87 of the refractory core materials 8B to 8E, and the door tail side prospective surface 85 of the refractory core material 8A. There is.

(8) The refractory core materials 7A, 7C, 7E, 7G, the refractory core materials 8A to 8E, the upper frame 3, the lower frame 4, the door end side vertical frame 5, and the door tail side vertical frame 6 are superposed on the first surface material 20. In this state, the refractory core materials 7B, 7D, 7F, and 7H are placed in a four-circle shape on the four-circle frame. The outer surface of the second finding surface portion 31 of the upper frame 3 and the second upper finding surface 810 of the refractory core material 8A, the outer surface of the second finding surface portion 41 of the lower frame 4 and the second lower finding of the refractory core material 8A. Surface 811, the outer surface of the second finding surface portion 51 of the door end side vertical frame 5, the second finding surface 812 of the refractory core material 8A, and the second finding surface 81'of the refractory core materials 8B to 8E, the door. The outer surface of the second finding surface portion 61 of the tail-side vertical frame 6 and the second finding surface 813 of the refractory core material 8A have the second finding surfaces 71 of the refractory core materials 7B, 7D, 7F, and 7H. Each abuts. The fourth end faces 75 of the refractory core materials 7B, 7D, 7F, and 7H are the second upper horizontal plane 814, the second lower horizontal plane 815, the second door end side vertical plane 816, and the second door tail, respectively, of the refractory core material 8A. It is in contact with the side vertical surface 817.

(9) Cover the second surface material 21. The back surface of the main surface portion 210 of the second surface material 21 abuts on the first finding surface 70 of the refractory core materials 7B, 7D, 7F, 7H, and the upper side 211, the lower side 212, the first side side 213, and the second side side The inner surface of 214 abuts on the third end surface 74 of the refractory core materials 7B, 7D, 7F, 7H. The outer surface of the upper surface portion 32 of the upper frame 3, the lower surface portion 42 of the lower frame 4, the door end side vertical frame 5, the prospective surface portions 52 and 62 of the door tail side vertical frame 6, and the upper side 211 and lower side 212 of the second surface material 21. The remaining widthwise half of the thermal expansion refractory member 14 is sandwiched between the inner surfaces of the first side side 213 and the second side side 214.

(10) The upper side 211 is fixed to the upper surface portion 32 by using a screw 15 with the thermal expansion refractory member 14 sandwiched between the upper side 211 of the second surface material 21 and the upper surface portion 32 of the upper frame 3. The shaft portion of the screw 15 penetrates the upper surface portion 32 and is screwed into the gypsum 9 filled in the upper frame 3. With the thermal expansion refractory member 14 sandwiched between the lower side 212 of the second surface material 21 and the lower surface portion 42 of the lower frame 4, the lower side 212 is fixed to the lower surface portion 42 using screws 15. The shaft portion of the screw 15 penetrates the lower surface portion 42 and is screwed into the gypsum 9 filled in the lower frame 4. With the thermal expansion refractory member 14 sandwiched between the first side side 213 of the second surface material 21 and the prospective surface portion 52 of the door end side vertical frame 5, the screw 15 is used on the prospective surface portion 52 of the first side side 213. Fix it. The shaft portion of the screw 15 penetrates the prospective surface portion 52 and is screwed into the gypsum 9 filled in the vertical frame 5 on the door end side. With the thermal expansion refractory member 14 sandwiched between the second side side 214 of the second surface material 21 and the prospective surface portion 62 of the door tail side vertical frame 6, the screw 15 is used on the prospective surface portion 62 of the second side side 214. Fix it. The shaft portion of the screw 15 penetrates the prospective surface portion 62 and is screwed into the plaster 9 filled in the door tail side vertical frame 6.

1 Door frame 2 Door body 20 1st surface material 21 2nd surface material 24 1st lock 25 2nd lock 26 3rd lock 27 Rod 3 Upper frame 4 Lower frame 5 Door end side vertical frame 6 Door end side vertical frame 7 ( 7A-7H) 2nd refractory core material (peripheral refractory core material)
7E, 7F Refractory core material around the door end side 8 (8A-8E) 1st refractory core material 8A, 8A', 8F 1st element 8C, 8D, 8C', 8D', 8G 2nd element 840 1st surface (1st surface) 1 Contact surface)
841 Second surface (first part)
842 3rd surface (1st part)
880 1st surface (2nd part)
881 Second surface (second contact surface)
882 Third surface (second part)
9 Gypsum 14 Thermal expansion refractory member 15 Screw G Gap L Latch S Space

Claims (9)

With a four-circle frame,
The surface material fixed to the four-circle frame and
Equipped with
A heat shield door in which the inside of the four-circle frame is filled with gypsum, and the gypsum and the inner surface of the four-circle frame are integrated. The heat shield door includes a refractory core material filled in a space surrounded by the surface material.
The heat shield door according to claim 1, wherein on the found surface of the surface material, at least the entire surface of the surface portion located on the center side of the door body from the four-circumferential frame is in contact with the refractory core material. The heat shield door according to claim 2, wherein the entire surface of the found surface of the surface material is in contact with the refractory core material. The expected dimension of the four-circle frame is smaller than the estimated dimension of the door body.
The refractory core material includes a peripheral refractory core material located between the found surface of the four-circumferential frame and the found surface of the surface material.
The heat shield door according to any one of claims 2 and 3. The refractory core material includes a first refractory core material provided over the entire thickness of the portion including the center of the door body.
It is composed of a second refractory core material which is the peripheral refractory core material adjacent to the peripheral edge portion of the first refractory core material.
The heat shield door according to claim 4. The heat shield door according to claim 5, wherein the unit volume mass of the first refractory core material is smaller than the unit volume mass of the second refractory core material. The heat shield door according to claim 6, wherein the mechanical strength of the material of the second refractory core material is larger than the mechanical strength of the material of the first refractory core material. The surface material has a prospective side, the prospective side is fixed to the prospective surface of the four-circle frame with a screw, and the shaft portion of the screw is located in the gypsum, any of claims 1 to 7. The heat shield door described in item 1. The heat shield door according to claim 8, wherein a thermal expansion refractory member is provided between the prospective side of the surface material and the prospective surface of the four-circumferential frame.

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