JP2024064887A - Door device - Google Patents

Abstract

[Problem] To provide a door device that allows pivot hinges to be applied to heat insulating doors. [Solution] In a door device in which a door body 2 is connected to a door frame 1 via upper and lower pivot hinges 3, a first surface material 4 and a second surface material 5 are folded to form recesses at the upper and lower end portions of the door body 2, and the door end side portion of the recess serves as a housing portion for a first hinge element 30, and thermally expandable fire-resistant members 60, 61, 62, 70, 71, 72 are provided within the housing portion to regulate contact between the first hinge element 30 and the first surface material 4 and the second surface material 5. [Selected Figure] Figure 3

Description

The present invention relates to a door device, and more specifically, to a door device equipped with a pivot hinge.

In recent years, there has been a trend for fire doors to be required not only for fire prevention performance, but also for heat insulation performance to prevent the transfer of heat from the fire side to the non-fire side, which is harmful during evacuation. Heat insulation doors are disclosed, for example, in Patent Document 1.

On the other hand, the door body of a fire door may be supported so that it can rotate using a pivot hinge, but the pivot hinge is fixed to a support frame by cutting out the surface material, making it difficult to apply this to the structure of fire protection equipment with heat insulation properties.

In addition, because pivot hinges are supported at two points, top and bottom, there is a tendency for the central part of the door body to warp more in the event of a fire. However, it is also important to regulate the transfer of heat from the fire side to the non-fire side through anti-warping parts (made of metal) that prevent warping.
Patent Publication 2019-148054

The present invention aims to provide a door device that allows pivot hinges to be applied to heat insulating doors.

The technical means adopted in the present invention are:
In a door device in which a door body is connected to a door frame via upper and lower pivot hinges,
The door has upper and lower end portions each having a recess formed therein by bending the surface material.
The rear end portion of the recess serves as a housing for a hinge element,
A fireproof member is provided within the housing to restrict contact between the hinge element and the surface material.
Door device.
In one embodiment, the refractory member is a thermally expandable refractory member.

In one aspect, the bottom surface of the recess is formed from a first surface material on a first side and a second surface material on a second side, and an edge of the first surface material and an edge of the second surface material are spaced apart by a gap;
The fire-resistant member is provided across the first surface material and the second surface material so as to cover the gap, and is provided between the hinge element and the first surface material and the second surface material.
In one embodiment, the storage section comprises a bottom surface and a pair of opposing raised surfaces, and the fireproof member is provided on the bottom surface and the pair of raised surfaces.

In one aspect, the recess is provided with a fireproof material adjacent the housing portion.
In one embodiment, the recessed portion comprises an upper recessed portion facing upward at an upper end portion of the door body and a lower recessed portion facing downward at a lower end portion of the door body,
A thermally expandable fireproof member is provided on the upper surface of the fireproof material provided in the upper recess.
In one embodiment, the recessed portion comprises an upper recessed portion facing upward at an upper end portion of the door body and a lower recessed portion facing downward at a lower end portion of the door body,
In the lower recess, the fireproof material is provided in the lower recess via a cover body that covers the lower recess from below, and a fireproof member is provided between the inner surface of the lower recess and the fireproof material and cover body.

In one embodiment, a locking portion is provided at the middle of the height direction of the end surface of the door body on the door tail side,
The end frame of the door frame has a hole or a recessed groove formed therein for receiving the locking portion when the door body is in the closed position.
In one embodiment, the locking portion is fixed to a trailing edge vertical frame of the door body,
The locking portion and the surface material provided on the trailing edge vertical frame are spaced apart via a gap.
In one embodiment, a fireproof member is provided between the trailing edge vertical frame, the surface material, and the locking portion,
A portion of the refractory member is exposed through the gap.

In the present invention, a recess is formed by bending the surface material, and the end of the recess serves as a housing for the hinge element. A fireproof material is provided within the housing to restrict contact between the hinge element and the surface material, thereby preventing the pivot hinge from reducing the heat insulation performance of the door body.

FIG. 2 is a front view of the door device (fully closed state) according to the embodiment. FIG. 2 is a cross-sectional view of the door device shown in FIG. 1 . The upper figure is a top view of the trailing edge portion of the door body, and the lower figure is a bottom view of the trailing edge portion of the door body. The right figure is a vertical cross-sectional view (cross-sectional view taken along the arrow A in FIG. 3) of the door device shown in FIG. 1, and the left figure is a vertical cross-sectional view (cross-sectional view taken along the arrow B in FIG. 3) of the door trailing edge portion (the housing portion for the hinge element). FIG. 5 is a partially enlarged view of the upper portion of the left diagram of FIG. 4 . FIG. 5 is a partially enlarged view of the lower portion of the left diagram in FIG. 4 . 4 is a partial enlarged view showing a middle part in the height direction of the trailing end surface of the door body according to the embodiment. FIG. 10 is a diagram illustrating a wiring configuration when an electric lock is used on the door body according to the present embodiment. FIG. 1A and 1B are a top view and a front view of the trailing edge portion of the door body (with the hinge element removed).

[A] Overall configuration of the door device Fig. 1 is a front view of the door device according to the embodiment as seen from the outside of the room, and the door device is composed of a vertically rectangular door frame 1 and a door body 2 that opens and closes the opening formed by the door frame 1. In this embodiment, the door frame 1 is a heat insulating door frame, the door body 2 is a heat insulating door, and the door device is used as a fire door. The door frame 1 is a four-sided frame formed into a vertically rectangular shape by an upper frame 10, a lower frame 11, a door-front vertical frame 12, and a door-rear vertical frame 13.

As shown in FIG. 1, the door body 2 according to this embodiment is rotatably supported at the trailing edge of the upper frame 10 and the trailing edge of the lower frame 11 of the door frame 1 by upper and lower pivot hinges 3 provided at the trailing edge portion. The pivot hinge 3 is composed of a first hinge element 30 on the door body 2 side, a second hinge element 31 on the door frame 1 side, and an axis portion 33 that pivots the first hinge element 30 and the second hinge element 31.

[B] Door frame Generally, conventional door frames are made of steel and are continuous members from one front side to the other front side in the front direction, so that heat received on the fire side is transferred directly to the non-fire side through the door frame. Therefore, even if a door body with heat insulation performance is adopted, there is a risk that heat will be transferred from the fire side to the non-fire side through the door frame. In this embodiment, gypsum is poured into the door frame and solidified, so that the inner surface of the door frame 1 and the gypsum P are firmly attached or fixed to each other and integrated, and the heat insulation and heat absorption properties of the gypsum P filled in the door frame 1 suppress the temperature rise of the door frame 1, thereby preventing heat conduction from the fire side to the non-fire side through the door frame 1 of the fire door as much as possible. In this specification, the filler containing gypsum as the main material is collectively called gypsum P. The gypsum P may contain materials other than gypsum.

[C] Configuration of the door body The door body 2 according to this embodiment is composed of a metallic (typically steel) surface material that forms the outer surface of the door body 2, a metallic (typically steel) aggregate, and a core material (peripheral fire-resistant core material 24, main fire-resistant core material C) filled in the internal space of the door body 2.

[C-1] Surface Material of Door Body As shown in Figs. 2 and 4, the surface material of the door body 2 according to this embodiment is made up of a first surface material 4 and a second surface material 5 which are folded and formed into a predetermined shape.

The first surface material 4 is formed by bending a thin steel plate, and is composed of a main surface portion 40 that forms the exterior visible surface of the door body 2, an upper projection 41 and an upper edge 42, a lower projection 43 and a lower edge 44, a door tip side projection 45 and a door tip side edge 46, and a door tail side edge 47. In this embodiment, the upper end portion of the main surface portion 40 of the first surface material 4 is an upper projection 41 formed by folding back and crushing a portion of the first surface material 4. The lower end portion of the main surface portion 40 of the first surface material 4 is a lower projection 43 formed by folding back and crushing a portion of the first surface material 4. The door tip side portion of the main surface portion 40 of the first surface material 4 is a door tip side projection 45 formed by folding back and crushing a portion of the first surface material 4.

The second surface material 5 is formed by bending a thin steel plate, and is composed of a main surface portion 50 that forms the interior facing surface of the door body 2, an upper projection 51 and an upper edge 52, a lower projection 53 and a lower edge 54, a door leading edge 56, and a door trailing edge 57. In this embodiment, the upper end portion of the main surface portion 50 of the second surface material 5 is the upper projection 51 formed by folding back and crushing a portion of the second surface material 5. The lower end portion of the main surface portion 50 of the second surface material 5 is the lower projection 53 formed by folding back and crushing a portion of the second surface material 5.

The upper end portion of the main surface portion 40 of the first surface material 4 forms a first upper projection 41 that extends upward beyond the top surface, and the upper end portion of the main surface portion 50 of the second surface material 5 forms a second upper projection 51 that extends upward beyond the top surface. In other words, the first upper projection 41 is formed on the outdoor side of the top surface (upper edge 42, upper edge 52) of the door body 2, and the second upper projection 51 is formed on the indoor side, so that the top surface of the door body 2 is concave.

The lower end portion of the main surface portion 40 of the first surface material 4 forms a first lower projection 43 that extends downward beyond the underside, and the lower end portion of the main surface portion 50 of the second surface material 5 forms a second lower projection 53 that extends downward beyond the underside. In other words, the first lower projection 43 is formed on the outdoor side of the underside (lower edge 44, lower edge 54) of the door body 2, and the second lower projection 53 is formed on the indoor side, so that the underside of the door body 2 is concave.

[C-2] Door body aggregate The door body 2 aggregate according to this embodiment has a four-sided frame consisting of an upper frame 20, a lower frame 21, a door end side vertical frame 22, and a door end side vertical frame 23 that form a force frame. The four-sided frame (upper frame 20, lower frame 21, door end side vertical frame 22, door end side vertical frame 23) has a U-shaped cross section, and the recesses are filled with gypsum P, which is exemplified as a filler having fire resistance and heat insulation properties. By pouring gypsum into the recesses of the four-sided frame and solidifying it, the strength of each frame (force frame) can be improved, and the heat absorption effect associated with the evaporation of crystal water from gypsum due to heating during a fire can suppress the temperature rise of the four-sided frame and the surroundings of the frame.

[C-3] Fire-resistant core material of door body The heat-insulating fire-resistant core material filled in the internal space of the door body 2 according to this embodiment is composed of a peripheral fire-resistant core material 24 and a main fire-resistant core material C that occupies the major volume of the internal space. As described below, the peripheral fire-resistant core material 24 is provided between the framework (upper frame 20, lower frame 21, leading-edge vertical frame 22, trailing-edge vertical frame 23) and the first surface material 4 and second surface material 5.

[C-3-1] Peripheral fireproof core material of door body In this embodiment, the expected dimensions of the four peripheral frames that form the support frame, that is, the upper frame 20, the lower frame 21, the door end side vertical frame 22, the door end side vertical frame 23
The projected dimensions of the door body 2 are smaller than the projected dimensions (thickness) of the door body 2, and a peripheral fire-resistant core material 24 is provided between the first surface material 4 and the four-periphery frame and between the second surface material 5 and the four-periphery frame. By sandwiching the peripheral fire-resistant core material 24 between the metallic first surface material 4, the second surface material 5 and the four-periphery frame, heat transfer from one visible surface of the door body 2 to the other visible surface is suppressed. The peripheral fire-resistant core material 24 is formed, for example, from a calcium silicate board, but a board formed from another material having heat insulating (heat-shielding) and fire-resistant properties may also be used.

[C-3-2] Main fire-resistant core material of the door body The main fire-resistant core material C is arranged in the internal space surrounded by the first surface material 4 and the second surface material 5 of the door body 2 so as to occupy all or part of the space excluding the four peripheral frames (upper frame 20, lower frame 21, leading edge vertical frame 22, trailing edge vertical frame 23), fire-resistant core material 24, and lock.

The main fire-resistant core material C is typically divided into multiple parts and is formed from a combination of multiple parts. The main fire-resistant core material C may be formed from a single material or a combination of multiple different materials. The material forming the main fire-resistant core material C is not limited, and may be formed from one or a combination of calcium silicate boards, rock wool, glass wool, lightweight aerated concrete panels (ACL panels), gypsum boards, fiber-reinforced cement boards, and other insulating fire-resistant core materials, and may further include other materials with fire resistance or insulating properties.

[C-4] Configuration of the upper end portion of the door body [C-4-1] Connection between the surface material and the upper frame A thermally expandable fire-resistant member 25 is provided between the upper edge 42 of the first surface material 4 and the upper edge 52 of the second surface material 5 and the upper surface of the upper frame 20, so that the upper edge 42 of the first surface material 4 and the upper edge 52 of the second surface material 5 do not come into direct contact with the upper surface of the upper frame 20.

The upper edge 42 of the first surface material 4 is fixed to the upper surface of the upper frame 20 by a screw. The screw penetrates the thermal expansion fire-resistant member 25 and is screwed into the upper frame 20 and the gypsum. The upper edge 52 of the second surface material 5 is fixed to the upper surface of the upper frame 20 by a screw. The screw penetrates the thermal expansion fire-resistant member 25 and is screwed into the upper frame 20 and the gypsum. As shown in FIG. 5, the edge of the upper edge 42 of the first surface material 4 and the edge of the upper edge 52 of the second surface material 5 are spaced apart, and a portion of the thermal expansion fire-resistant member 25 is exposed in the gap.

[C-4-2] Thermal insulation material filled in the upper recess, and thermal expansion fireproof material on the thermal insulation material In this embodiment, the first upper protrusion 41 is formed on the outdoor side of the upper surface (upper side 42, upper side 52) of the door body 2, and the second upper protrusion 51 is formed on the indoor side, so that the upper surface of the door body is concave. The upper recess formed by the first upper protrusion 41 and the second upper protrusion 51, which are the opposing rising parts, and the upper surface (upper side 42, upper side 52) of the door body 2, which is the bottom, is filled with fireproof material 26. The fireproof material 26 is filled in the upper recess across the width of the door body 2, but in this embodiment, the door tail side part of the upper recess is the housing part for the upper first hinge element 30, and the fireproof material 26 is not provided in the housing part for the first hinge element 30 (see the upper diagram in FIG. 3). The fireproof material 26 is fixed with adhesive tape, adhesive, screws, etc.

A thermally expandable fire-resistant member 27 that foams and expands when heated during a fire is provided on the upper surface of the fire-resistant material 26. In this embodiment, the thermally expandable fire-resistant member 27 is provided over the entire upper surface of the fire-resistant material 26. The upper ends of the first upper protrusion 41 and the second upper protrusion 51 are located slightly above the upper surface of the thermally expandable fire-resistant member 27.

The material forming the fireproof material 26 is not limited as long as it has the specified fire resistance and heat insulation properties, and can be formed from, for example, one or a combination of calcium silicate boards, rock wool, glass wool, lightweight aerated concrete panels (ACL panels), gypsum boards, fiber reinforced cement boards, and other insulating fireproof core materials, and may further include other materials with fire resistance or heat insulation properties.

[C-4-3] Storage section for hinge element The trailing edge portion of the upper recess of the door body 2 serves as a storage section for the hinge element, and the storage section stores the first hinge element 30 on the door side of the upper pivot hinge 3. As shown in the upper diagram of Figure 3 and Figure 9, a cutout portion (opening) 610 is formed in the trailing edge end of the first upper projection 41 forming one rising surface of the upper recess, and a portion of the first hinge element 30 protrudes through the cutout portion 610.

The storage section is composed of a bottom surface and a pair of opposing raised surfaces, and a fire-resistant member is provided in the storage section to prevent contact between the first hinge element 30 and the surface material. As shown in FIG. 5, the bottom surface of the storage section is formed by the upper edge 42 of the first surface material 4 and the upper edge 52 of the second surface material 5, and the edge of the upper edge 42 and the edge of the upper edge 52 are separated by a gap, and a thermal expansion fire-resistant member 60 is provided to cover the entire bottom surface. The thermal expansion fire-resistant member 60 is provided across the upper edges 42 and 52 to cover the gap, and is provided between the first hinge element 30 and the upper edges 42 and 52. The first hinge element 30 is connected to the aggregate (upper frame 20) in the storage section by a screw 32 that penetrates the first hinge element 30 and the bottom surface.

A thermal expansion fire-resistant member 61 is provided on the inner surface of the first upper protrusion 41 forming one of the rising surfaces of the storage section, and a thermal expansion fire-resistant member 62 is provided on the inner surface of the second upper protrusion 51 forming the other rising surface. The inner surface of the storage section is covered by a thermal expansion fire-resistant member 60, a thermal expansion fire-resistant member 61, and a thermal expansion fire-resistant member 62 over almost the entire area (see FIG. 9). The first hinge element 30 received in the storage section is surrounded by a thermal expansion fire-resistant member 60, a thermal expansion fire-resistant member 61, and a thermal expansion fire-resistant member 62 within the storage section (see the upper diagram of FIG. 3 and FIG. 5). Contact between the first hinge element 30 and the surface material within the storage section is restricted. In the upper recess, a fire-resistant material 26 is provided adjacent to the storage section, and a thermal expansion fire-resistant member 27 is provided on the upper surface of the fire-resistant material 26 provided in the upper recess (see the upper diagram of FIG. 3 and FIG. 9). Instead of providing the thermally expandable fire-resistant members 60, 61, and 62 on the inner surface of the housing, a fire-resistant material (similar to the fire-resistant material 26) may be arranged, and the fire-resistant material here may be independent of the fire-resistant material 26 or may be integral with it (processed into a shape that allows the first hinge element 30 to fit).

[C-5] Configuration of the lower end portion of the door body [C-5-1] Connection between the surface material and the lower frame A thermally expandable fire-resistant member 25 is provided between the lower edge 44 of the first surface material 4 and the lower edge 54 of the second surface material 5 and the lower surface of the lower frame 21, so that the lower edge 44 of the first surface material 4 and the lower edge 54 of the second surface material 5 do not come into direct contact with the lower surface of the lower frame 21.

The bottom edge 44 of the first surface material 4 is fixed to the bottom surface of the lower frame 21 by a screw. The screw penetrates the thermal expansion fire-resistant member 25 and is screwed into the lower frame 21 and the gypsum. The bottom edge 54 of the second surface material 5 is fixed to the bottom surface of the lower frame 21 by a screw. The screw penetrates the thermal expansion fire-resistant member 25 and is screwed into the lower frame 21 and the gypsum. As shown in FIG. 6, the edge of the bottom edge 44 of the first surface material 4 and the edge of the bottom edge 54 of the second surface material 5 are spaced apart, and a portion of the thermal expansion fire-resistant member 25 is exposed in the gap.

[C-5-2] Thermal insulation material filled in the lower recess, and thermal expansion fireproof material on the thermal insulation material In this embodiment, a first lower projection 43 is formed on the outdoor side of the lower surface (lower side 44, lower side 54) of the door body 2, and a second lower projection 53 is formed on the indoor side, so that the lower surface of the door body is concave. The recess formed by the opposing hanging parts, the first lower projection 43 and the second lower projection 53, and the lower surface (lower side 44, lower side 54) of the door body 2, which is the bottom, is filled with fireproof material 26.

In the lower recess of the door body 2, the fireproof material 26 is provided in the lower recess via a cover body 28 that covers the lower recess from below. The cover body 28 has a U-shape in cross section with a bottom surface 280 and a pair of rising edges 281, 282, and is fixed to the lower frame 21 by screws 283 with the internal space filled with the fireproof material 26. The cover body 28 is a member that extends in the width direction of the door body 2, but in this embodiment, the end side portion of the lower recess serves as the storage section for the lower first hinge element 30, and the cover body 28 (the fireproof material 26 filled inside) is not provided in the storage section for the first hinge element 30.

The inner surface of the lower recess (including the storage section) consists of a bottom surface and a pair of opposing vertical surfaces. As shown in Figures 4 and 6, the bottom surface is formed by the lower edge 44 of the first surface material 4 and the lower edge 54 of the second surface material 5, and the edge of the lower edge 44 and the edge of the lower edge 54 are separated by a gap, and a thermal expansion fire-resistant member 70 is provided so as to cover the entire bottom surface. A thermal expansion fire-resistant member 71 is provided on the inner surface of the first lower projection 43 that forms one vertical surface of the lower recess (including the storage section), and a thermal expansion fire-resistant member 72 is provided on the inner surface of the second lower projection 53 that forms the other vertical surface. The inner surface of the lower recess (including the storage section) is covered over almost the entire area by the thermal expansion fire-resistant member 70, the thermal expansion fire-resistant member 71, and the thermal expansion fire-resistant member 72 (see the lower diagram of Figure 3 and Figure 4).

The upper ends of a pair of rising edges 281, 282 of the cover body 28 abut against a thermally expandable fire-resistant member 70, with a thermally expandable fire-resistant member 71 positioned between the outer surface of the rising edge 281 and the inner surface of the first lower projection 43, and a thermally expandable fire-resistant member 72 positioned between the outer surface of the rising edge 282 and the inner surface of the second lower projection 53, preventing direct contact between the metal cover body 28 and the inner surface of the metal lower recess.

The first hinge element 30 received in the housing is surrounded by the thermal expansion fire-resistant member 70, the thermal expansion fire-resistant member 71, and the thermal expansion fire-resistant member 72 inside the housing (see the lower diagram of FIG. 3 and FIG. 6). Contact between the first hinge element 30 and the surface material inside the housing is restricted. In the lower recess, a cover body 28 containing the fire-resistant material 26 is provided adjacent to the housing. Note that instead of providing the thermal expansion fire-resistant member 70, the thermal expansion fire-resistant member 71, and the thermal expansion fire-resistant member 72 on the inner surface of the housing, a fire-resistant material (a material similar to the fire-resistant material 26) may be arranged, and the fire-resistant material here may be independent of the fire-resistant material 26 or may be integral (processed into a shape that allows the first hinge element 30 to fit).

[C-6] Configuration of the leading edge end of the door body [C-6-1] Connection between the surface material and the leading edge vertical frame A thermally expandable fire-resistant member 25 is provided between the leading edge side edge 46 of the first surface material 4 and the leading edge side edge 56 of the second surface material 5 and the projected surface of the leading edge vertical frame 22, so that the leading edge side edge 46 of the first surface material 4 and the leading edge side edge 56 of the second surface material 5 do not come into direct contact with the projected surface of the leading edge vertical frame 22.

The leading edge 46 of the first surface material 4 is fixed to the projected surface of the leading edge vertical frame 22 with a screw. The screw penetrates the thermal expansion fire-resistant member 25 and is screwed into the leading edge vertical frame 22 and the gypsum. The leading edge 56 of the second surface material 5 is fixed to the projected surface of the leading edge vertical frame 22 with a screw. The screw penetrates the thermal expansion fire-resistant member 25 and is screwed into the leading edge vertical frame 22 and the gypsum. The edge of the leading edge 46 of the first surface material 4 and the edge of the leading edge 56 of the second surface material 5 are spaced apart, and a portion of the thermal expansion fire-resistant member 25 is exposed in the gap.

[C-7] Configuration of the trailing edge side end of the door body [C-7-1] Connection between the surface material and the trailing edge side vertical frame A thermally expandable fire-resistant member 25 is provided between the trailing edge side edge 47 of the first surface material 4 and the trailing edge side edge 57 of the second surface material 5 and the projected surface of the trailing edge side vertical frame 23, so that the trailing edge side edge 47 of the first surface material 4 and the trailing edge side edge 57 of the second surface material 5 do not come into direct contact with the projected surface of the trailing edge side vertical frame 23.

The trailing edge side edge 47 of the first surface material 4 is fixed to the projected surface of the trailing edge side vertical frame 23 with a screw. The screw passes through the thermal expansion fire-resistant member 25 and is screwed into the trailing edge side vertical frame 23 and the gypsum. The trailing edge side edge 57 of the second surface material 5 is fixed to the projected surface of the trailing edge side vertical frame 23 with a screw. The screw passes through the thermal expansion fire-resistant member 25 and is screwed into the trailing edge side vertical frame 23 and the gypsum. The edge of the trailing edge side edge 47 of the first surface material 4 and the edge of the trailing edge side edge 57 of the second surface material 5 are spaced apart, and a portion of the thermal expansion fire-resistant member 25 is exposed in the gap.

[C-7-2] Anti-warping member A locking portion 8 is protruded from the middle of the height direction of the end face of the door body 2 on the trailing edge side, and a hole or a recessed groove 130 is formed in the trailing edge side vertical frame 13 of the door frame 1 to receive the locking portion 8 when the door body 2 is in the closed position (see Figs. 1 and 2). The locking portion 8 functions as an anti-warping member for the center part of the height direction of the door body 2 in the event of a fire.

The locking portion 8 is a metal block, and is fixed to the tail-end vertical frame 23 of the door body 2 with a screw 81 via a thermal expansion fire-resistant member 25. The tail-end side edge 47 of the first surface material 4 and the tail-end side edge 57 of the second surface material 5 are cut out to correspond to the locking portion 8, and the locking portion 8 and the surface material (tail-end side edge 47, tail-end side edge 57) provided on the tail-end vertical frame 23 are separated by a gap 80, and a portion of the thermal expansion fire-resistant member 25 is exposed in the gap 80. The metal locking portion 8 is not in direct contact with the metal tail-end vertical frame 13, tail-end side edge 47, and tail-end side edge 57, so heat transfer from the fire side to the non-fire side is suppressed through the locking portion 8.

[C-8] Locking device of door body A handle H is provided on the door end portion of the exterior facing surface (main surface 40 of first surface material 4) and the interior facing surface (main surface 50 of second surface material 5) of the door body 2. A locking device L is built into the door end portion of the door body 2, located midway in the height direction. There are no limitations on the type or configuration of the locking device, but this specification discloses wiring when an electric lock is used.

Conventionally, when attaching an electric lock to a door body, it is common to install piping inside the door body for wiring after the door is hung. In the case of a heat-shielding door, the door body is filled with the main fire-resistant core material C, making it difficult to process the piping. Furthermore, even if piping and wiring are placed to penetrate the main fire-resistant core material C of the door body, there is a risk that the piping and wiring will lead to an increase in temperature on the non-fire side. We propose a means to suppress a decrease in heat-shielding performance by eliminating the need to process wiring into the fire-resistant material inside the door body when an electric lock is installed on a heat-shielding door.

[C-8-1] First aspect In this embodiment, the ribs are used instead of piping, making it possible to wire without processing the main fireproof core material C. Since the temperature of the upper part of the door body 2 is likely to rise in the event of a fire, the lower half of the leading edge vertical frame 22, the lower frame 21, and the lower half of the trailing edge vertical frame 23 are used to form a wiring space (see Figure 1). The ends and corners of the ribs are sufficiently covered with a heat-expanding fireproof material to prevent breakage due to direct contact with the ribs (metal).

As shown in the upper diagram of FIG. 8, the amount of gypsum filled in the ribs is such that the tip of the screw that fixes the surface material and the ribs is hidden, forming a space for wiring. More specifically, the end-of-door vertical frame 23 has a U-shaped cross section consisting of a pair of visible surfaces 230, 231 and a visible surface 232, and gypsum P is filled only in the space near the visible surface 232 in the recess, and a wiring space is formed on the side away from the visible surface 232, in which wiring W is arranged. A thermally expandable fire-resistant member 250 is provided in the portion (part not filled with gypsum) facing the wiring space on the inner surface of the pair of visible surfaces 230, 231, which blocks the wiring space in the event of a fire and suppresses flames caused by the wiring. In place of the thermally expandable fire-resistant member 250, a fire-resistant material of the same material as the fire-resistant material 26 may be provided.

[C-8-2] Second embodiment In the second embodiment, the wiring pipe PL is placed inside the reinforcement frame, and the reinforcement frame is filled with gypsum P so as to surround the pipe (lower diagram in FIG. 8). By placing the wiring W inside the pipe PL, flame generation in the event of a fire is suppressed.

1 Door frame 130 Groove 2 Door body 23 Door end side vertical frame 25 Thermal expansion fireproof member 26 Fireproof material 27 Thermal expansion fireproof member 28 Cover body 3 Pivot hinge 30 First hinge element 4 First surface material 41 First upper protrusion (rising surface)
42 Top (bottom)
43 First lower protrusion (raised surface)
44 Bottom side (base)
5 Second surface member 51 Second upper protrusion (rising surface)
52 Top (bottom)
53 Second lower protrusion (rising surface)
44 Bottom side (base)
60 Thermally expandable fire-resistant member 61 Thermally expandable fire-resistant member 62 Thermally expandable fire-resistant member 70 Thermally expandable fire-resistant member 71 Thermally expandable fire-resistant member 72 Thermally expandable fire-resistant member 8 Engagement portion 80 Gap

Claims (10)

In a door device in which a door body is connected to a door frame via upper and lower pivot hinges,
The door has upper and lower end portions each having a recess formed therein by bending the surface material.
The rear end portion of the recess serves as a housing for a hinge element,
A fireproof member is provided within the housing to restrict contact between the hinge element and the surface material.
Door device. a bottom surface of the recess is formed from a first surface material on a first side and a second surface material on a second side, an edge of the first surface material and an edge of the second surface material being spaced apart by a gap;
The fire-resistant member is provided across the first surface material and the second surface material so as to cover the gap, and is provided between the hinge element and the first surface material and the second surface material.
The door device according to claim 1 . The storage section includes a bottom surface and a pair of opposing raised surfaces, and the fireproof member is provided on the bottom surface and the pair of raised surfaces.
The door device according to claim 1 . The recess has a fireproof material provided adjacent to the housing portion.
The door device according to claim 1 . The recessed portion includes an upper recessed portion facing upward at an upper end portion of the door body and a lower recessed portion facing downward at a lower end portion of the door body,
A thermal expansion fireproof member is provided on the upper surface of the fireproof material provided in the upper recess.
The door device according to claim 4. The recessed portion includes an upper recessed portion facing upward at an upper end portion of the door body and a lower recessed portion facing downward at a lower end portion of the door body,
In the lower recess, the fireproof material is provided in the lower recess via a cover body that covers the lower recess from below, and a fireproof member is provided between the inner surface of the lower recess and the fireproof material and the cover body.
The door device according to claim 4. A locking portion is provided at the height center of the end surface of the door body on the door tail side,
The door frame has a hole or a groove formed in the end frame of the door frame to receive the locking portion when the door body is in a closed position.
The door device according to claim 1 . The locking portion is fixed to a trailing edge vertical frame of the door body,
The locking portion and the surface material provided on the trailing edge vertical frame are spaced apart via a gap.
The door device according to claim 7. A fireproof member is provided between the trailing edge vertical frame, the surface material, and the locking portion,
A portion of the fire-resistant member is exposed from the gap.
The door device according to claim 8. The door device according to any one of claims 1 to 9, wherein the fire-resistant member is a thermally expandable fire-resistant member.

Images