JP6498254B2 - Flameproof and insulated steel door - Google Patents

Description

The present invention relates to a flameproof and insulated steel door.

The steel door includes a metal quadrilateral frame, a metal surface material fixed to the metal quadrilateral frame, a core material filled in an internal space between the outdoor side surface portion and the indoor side surface portion of the metal surface material, It is composed of In order to improve the heat insulation of the steel door, it is advantageous to prevent contact between metals having excellent thermal conductivity, and between the metal quadrilateral frame and the outdoor side surface portion and the indoor side surface portion of the metal surface material. A heat insulating member made of resin or the like is sandwiched between the two.

In order to improve the heat insulation of the steel door, a core material made of foamed heat insulating material or the like is further employed, and the core material and the outdoor side surface portion and the indoor side surface portion of the metal surface material are fixed with an adhesive.

However, both the heat insulating material provided between the metal quadrilateral frame and the metal surface material, and the resin that fixes the core material to the metal surface material are both flammable, so they are suitable for fire doors with a predetermined fire resistance. Absent. Patent Document 1 describes a steel door that is excellent in heat shielding performance at the time of a fire, but contact between metals is allowed, and it is not necessarily suitable for improving heat insulation.

JP 2011-196083 A

It is an object of the present invention to provide a steel door having fire prevention performance that is not easily affected by the heat insulating structure of the steel door (the presence or absence of the heat insulating member, the presence or absence of an adhesive for fixing the core material, etc.). is there.

The technical means adopted by the present invention are:
A metal quadrilateral frame,
A first metal surface material and a second metal surface material fixed to a metal quadrilateral frame;
A core filled between the first metal surface material and the second metal surface material;
In steel doors with
Between the peripheral edge of the first metal surface material and the peripheral edge of the second metal surface material, and the metal four-circumferential frame, a thermal expansion fireproof member is provided,
It is a flameproof and insulated steel door.

In one aspect,
The first metal surface material includes a main surface portion that forms an outdoor side surface portion of the door, and a four-fold bent piece that forms an outdoor portion of the upper surface, the lower surface, and the side surface of the door. A piece forms the peripheral edge of the first metal surface material,
The second metal surface material includes a main surface portion that forms an indoor side surface portion of the door, and a four-fold bent piece that forms an indoor side portion of the upper surface, the lower surface, and the side surface of the door, and the four-fold bending portion. A piece forms the peripheral edge of the second metal surface material,
The four-circumference frame includes an outdoor-side finding surface, an indoor-side finding surface, an upper surface, a lower surface, and a side surface,
A heat insulating member is provided between the main surface portion of the first metal surface material and the outdoor side finding surface of the four-circumferential frame, and between the main surface portion of the second metal surface material and the indoor side finding surface of the four-circular frame. Provided,
A thermal expansion refractory member is provided between the four-fold bent piece of the first metal surface material and the four-fold bent piece of the second metal surface material and the upper surface, the lower surface, and the side surface of the four-frame frame. .
The heat insulating member may be any member formed of a material having a lower thermal conductivity than metal, and may be a heat insulating member made of resin or the like used in conventional steel doors. The heat insulating member is formed from a thermally expanded refractory member.

  In one aspect, the thermal expansion refractory member is sandwiched between a peripheral edge portion of the first metal surface material and a peripheral edge portion of the second metal surface material, and the metal quadrilateral frame. It is fixed by fastening members (rivets, screws, etc.).

In one aspect, the flame-insulated and insulated steel door includes a window,
The first metal surface material and the second metal surface material have openings corresponding to the window portions, and a window portion is provided between the first metal surface material and the second metal surface material. A metal quadruple frame is provided,
Between the opening periphery of the first metal surface material and the opening periphery of the second metal surface material, and the metal quadrilateral frame for the window, a thermal expansion fire-resistant member is provided.

In one aspect,
The first metal surface material includes an upper bent piece,
The second metal surface material includes an upper bent piece,
At least one hole is formed on the upper surface of the four-circumferential frame, and two rows of thermal expansion fireproof members are provided so as to sandwich the hole,
One thermal expansion refractory member is fixed to the upper bent piece of the first metal surface material,
The other thermal expansion refractory member is fixed to the upper bent piece of the second metal surface material.
In one aspect, the hole is closed by a hot-melt material (for example, hot melt) that melts at a predetermined temperature (for example, 80 ° C. to 100 ° C.), and the hole is normally closed at the time of a fire. The heat melting material is melted by this heat and the holes are exposed. When the steel door is installed in a place where it is not affected by rainwater, the hole may be always open.
Other technical means adopted by the present invention are:
A door device comprising the above-described flame-insulated and heat-insulated steel door, and a door frame on the housing side,
A part on the upper end side of the flame-insulated and heat-insulated steel door and on the indoor side of the hole, and a part of the door frame facing the part (upper part, upper part of the door bottom side vertical frame, the upper part of the door side vertical frame) The door device is provided with a thermal expansion refractory member at one or both of the above.

In the steel door according to the present invention, a thermal expansion refractory member is provided between the peripheral edge of the first metal surface material, the peripheral edge of the second metal surface material, and the metal four-frame, Since the thermal expansion refractory member expands due to the heat of the time and closes the peripheral part of the metal surface material, even if the flammable substance inside the steel door is melted by the heat at the time of the fire, and even if it is vaporized, The vaporized gas and the molten resin are prevented from leaking to the outside of the steel door from the gap between the metal surface material and the metal quadrilateral frame through the back surface of the metal surface material.
Therefore, a heat insulating material (which may be flammable) can be provided between the metal quadrilateral frame and the metal surface material, and a steel door having both heat insulating properties and fireproof properties can be provided.

In the case where at least one hole is formed on the upper surface of the quadrilateral frame and the hole is closed by hot melt, in addition to the above effects, a part of the gas generated inside the steel door is transferred from the hole to the steel. It can be discharged outside the door.
In the event of a fire, the hot melt melts and the gas generated at the beginning is discharged from the hole before the thermal expansion refractory member expands, and the expanded thermal expansion refractory member closes the hole.

The left figure is a front view of the steel door as seen from the outdoor side, and the right figure is a front view of the steel door as seen from the indoor side. It is a partially omitted vertical sectional view of a steel door. It is a cross-sectional view of a steel door. It is an enlarged view of the upper part of FIG. It is an enlarged view of the lower part of FIG. FIG. 3 is an enlarged view of an intermediate portion in the height direction of FIG. 2. It is an enlarged view of the door butt side site | part of FIG. It is an enlarged view of the door end side site | part of FIG. FIG. 4 is an enlarged view of an intermediate portion in the width direction of FIG. 3. It is a perspective view of the upper part of a steel door. (A) Partial top view of steel door, (B) Partial front view (internal view), (C) Cross-sectional view along hole. The left figure is a vertical cross-sectional view of the door device (opening-closed posture) in a normal time (non-fire), and the right figure is a vertical cross-sectional view of the door device in a fire. The upper figure is a cross-sectional view of the door device (opening closing posture) in a normal state (non-fire), and the lower figure is a cross-sectional view of the door device in a fire time.

FIG. 1 is a front view of the steel door 1 as viewed from the inside and outside of the room, FIG. 2 is a partially omitted vertical sectional view of the steel door 1, and FIG. 3 is a transverse sectional view of the steel door 1. 4 to 6 are partially enlarged views of the upper portion, the lower portion, and the height direction intermediate portion (window portion) in FIG. 2, respectively, and FIGS. 7 to 9 are the door bottom side portion and door end side in FIG. 3, respectively. It is the elements on larger scale of a site | part and the width direction intermediate site (window part).

The steel door 1 is a panel body having a rectangular shape in a front view and a predetermined expected size (thickness), and includes an outdoor side surface portion, an indoor side surface portion, a door end side end surface, a door bottom side end surface, an upper surface portion, and a lower surface portion. In the illustrated embodiment, the window portion is formed by fitting the multilayer fireproof glass 2 at the center of the steel door 1 in the width direction. A handle 1 a is provided on the door end side of the indoor and outdoor surface portions of the steel door 1, and a key hole 1 b is provided on the door end side of the outdoor side surface portion of the steel door 1. A hinge 1c is provided on the end face of the steel door 1 on the door bottom side. A door closer 1d is provided at the upper part of the indoor side surface of the steel door 1 on the door bottom side. A door edge member 1e is provided on the end surface of the steel door 1 over the height direction.

The steel door 1 includes a metal frame provided in a four-round shape and a metal surface plate mounted on the metal frame. As shown in FIGS. 2 and 3, the quadrilateral metal frame is composed of a long upper frame member 3 and a lower frame member 4 extending horizontally, and a long left and right vertical frame extending vertically. And materials 5 and 6. The surface plate material includes a first surface material 7 that forms the outdoor portion of the steel door 1 and a second surface material 8 that forms the indoor portion of the steel door 1.

As shown in FIG. 4, in a cross-sectional view, the upper frame member 3 includes an upper side 30 extending in the expected direction (thickness direction) of the steel door 1, and along the finding surface of the steel door 1 from both ends of the upper side 30. The outdoor side finding side 31 and the indoor side finding side 32 that hang in an opposing manner are formed in a U shape in a sectional view.

As shown in FIG. 5, in a cross-sectional view, the lower frame member 4 includes a lower side 40 extending in the expected direction (thickness direction) of the steel door 1, and along the finding surface of the steel door 1 from both ends of the lower side 40. The outdoor side finding side 41 and the indoor side finding side 42 rising vertically in an opposing manner are formed in a U shape in a sectional view.

As shown in FIG. 7, in a cross-sectional view, the vertical frame member 5 on the door bottom side has a side 50 extending in the expected direction (thickness direction) of the steel door 1 and the steel door 1 viewed from both ends of the side. It is formed in a U-shaped cross-sectional view from the outdoor side finding side 51 and the indoor side finding side 52 that extend in the opposite direction along the attached surface toward the door end side (perpendicular to the side side 50). ing.

As shown in FIG. 8, in the cross-sectional view, the vertical frame member 6 on the door end side includes a side 60 extending in the expected direction (thickness direction) of the steel door 1 and the steel door 1 from both ends of the side 60. Formed into a U-shaped cross-sectional view from the outdoor side finding side 61 and the indoor side finding side 62 extending in the opposite direction along the finding surface toward the door butt side (perpendicular to the side 60). Has been.

In this embodiment, as shown in FIGS. 3 and 8, the vertical frame member 6 ′ is connected (for example, welded) to the vertical frame member 6. The vertical frame member 6 ′ is opposed to the side side 60 ′ extending in the expected direction (thickness direction) of the steel door 1 and the both sides of the side side 60 ′ along the finding surface of the steel door 1 in a cross-sectional view. Are formed in a U-shaped cross-sectional view from an outdoor side finding side 61 ′ and an indoor side finding side 62 ′ extending toward the door end side (perpendicular to the side side 60 ′). The outdoor side edge 61 'of the vertical frame member 6 and the outdoor side edge 61' of the vertical frame member 6 'and the indoor side edge 62 of the vertical frame member 6 and the indoor side edge of the vertical frame member 6'. The front end of the side 62 'is welded to form a rectangular shape in sectional view. In one aspect, the vertical frame member 6 ′ has the same height as the vertical frame member 6, but at least at the height position of the lock device provided in the door end side portion of the internal space of the steel door 1. Correspondingly, it is fixed to the vertical frame member 6 and may have a height dimension to which the lock device is attached.

As shown in FIGS. 4, 5, 7, and 8, the first surface material 7 includes a main surface portion 70 that forms the outdoor side surface portion of the steel door 1, and the main surface portion 70 from the four peripheral edges of the main surface portion 70. A horizontal upper bent piece 71 and a lower bent piece 72 that extend vertically with respect to the main surface portion 70, a vertical door bottom side bent piece 73 and a door that extend vertically toward the indoor side with respect to the main surface portion 70. A front bent piece 74. Similarly, the second surface material 8 includes a main surface portion 80 that forms the indoor side surface portion of the steel door 1, and a horizontal upper bent piece that extends perpendicularly from the four peripheral edges of the main surface portion 80 to the main surface portion 80. 81, a lower bent piece 82, a vertical door bottom side bent piece 83 and a door tip side bent piece 84 extending perpendicularly to the main surface 80 toward the outdoor side.

In a state where the first surface material 7 and the second surface material 8 are mounted on the quadrilateral metal frame, the upper bent pieces 71 and 81 of the first surface material 7 and the second surface material 8 are the upper surface portion of the steel door 1. The lower bent pieces 72 and 82 of the first surface material 7 and the second surface material 8 form the lower surface portion of the steel door 1, and the door bottom side of the first surface material 7 and the second surface material 8 The bent pieces 73 and 83 form the door end side end surface of the steel door 1, and the door end side bent pieces 74 and 84 of the first surface material 7 and the second surface material 8 form the door end side end surface of the door body. To do.

As shown in FIG. 4, FIG. 10, and FIG. 11, the indoor side finding of the upper frame member 3 is between the outdoor side finding edge 31 of the upper frame member 3 and the upper portion of the main surface portion 70 of the first surface member 7. Between the side 32 and the upper portion of the main surface portion 80 of the second surface material 8, long thermal expansion fireproof members 9 </ b> A and 9 </ b> B are provided across the width direction of the steel door 1. Between the upper side 30 of the upper frame member 3 and the upper bent piece 71 and the upper bent piece 81 of the first surface material 7 and the second surface material 8, the tips of the upper bent piece 71 and the upper bent piece 81 are provided. Elongated thermal expansion fire-resistant members 9 </ b> C and 9 </ b> D are provided across the width direction of the steel door 1. The thermal expansion refractory members 9C and 9D that are in contact with the upper side 30 of the upper frame member 3 are provided in two rows so as to contact the upper bent piece 71 and the upper bent piece 81, respectively. The upper bent piece 71 and the upper side 30 are fixed by a rivet R with the upper bent piece 71 and the upper side 30 sandwiching the thermal expansion refractory member 9C, and the upper bent piece 81 and the upper side 30 are fixed to the thermal expansion refractory member. The upper bent piece 81 and the upper side 30 are fixed with a rivet R with 9D interposed therebetween.

A gap is formed between the tips of the upper bent piece 71 and the upper bent piece 81 and between the thermal expansion refractory members 9C and 9D, and the upper side 30 of the upper frame member 3 is located in the gap, A plurality of holes (may be long holes) 300 are formed across the width direction of the steel door 1. And the hot melt 10 illustrated as a material fuse | melted at predetermined | prescribed temperature is filled so that the hole part 300 and the said clearance gap may be plugged up. A thermal expansion refractory member 9E is also provided on the indoor side portion of the upper surface of the upper bent piece 81. The heat-meltable material that closes the hole 300 may be a resin material other than hot melt as long as it melts at a predetermined temperature (for example, 80 ° C. to 100 ° C.). In addition, when the steel door 1 is installed in a place not affected by rainwater, the hole 300 may be always opened.

Reference numeral 11 in FIG. 4 is a door closer liner. The door closer liner 11 is fixed to the upper frame member 3 and reinforces the portion of the main surface portion 80 of the second surface member 8 to which the door closer 1d is attached from the inside. doing.

As shown in FIG. 5, between the outdoor side finding side 41 of the lower frame member 4 and the lower part of the main surface portion 70 of the first surface member 7, the indoor side finding side 42 and the second surface of the lower frame member 4. Between the lower part of the main surface portion 80 of the material 8, elongated thermal expansion fire-resistant members 9 </ b> F and 9 </ b> G are provided across the width direction of the steel door 1. Between the lower side 40 of the lower frame member 4 and the lower bent piece 72 and the lower bent piece 82 of the first surface material 7 and the second surface material 8, the lower bent piece 72 and the lower bent piece are provided. Elongated thermal expansion refractory members 9 </ b> H and 9 </ b> I are provided across the width direction of the steel door 1, located on the distal end side of the piece 82.

The thermal expansion refractory members 9H and 9I that are in contact with the lower side 40 of the lower frame member 4 are provided in two rows so as to contact the lower bent piece 72 and the lower bent piece 82, respectively. With the lower bent piece 72 and the lower side 40 sandwiching the thermal expansion fireproof member 9H, the lower bent piece 72 and the lower side 40 are fixed with rivets R, and the lower bent piece 82 and the lower side 40 are heated. The lower bent piece 82 and the lower side 40 are fixed by a rivet R with the expanded fireproof member 9I sandwiched therebetween.

A gap is formed between the ends of the lower bent piece 72 and the lower bent piece 82, and a plurality of holes (long) are formed in the lower side 40 of the lower frame member 4 in the width direction of the steel door 1. 400 may be formed).

As shown in FIG. 7, between the outdoor side found side 51 of the vertical frame member 5 and the door bottom side portion of the main surface portion 70 of the first surface member 7, the indoor side found side 52 of the vertical frame member 5 and the first side. Between the door bottom side site | part of the main surface part 80 of the 2 surface material 8, the elongate thermal expansion fireproof members 9J and 9K are provided over the height direction of the steel door 1. As shown in FIG. Between the side edge 50 of the vertical frame member 5 and the door bottom side bent piece 73 and the door bottom side bent piece 83 of the first surface material 7 and the second surface material 8, the door bottom side bent piece 73, An elongated thermal expansion fireproof member 9 </ b> L is provided over the height direction of the steel door 1, located at the front end side of the door bottom side bent piece 83.

The thermal expansion refractory member 9L that contacts the side 50 of the vertical frame member 5 is wider than the thermal expansion refractory members 9C, 9D, 9H, and 9I provided on the upper side 30 and the lower side 40, and the door bottom side bent piece 73. In addition, it is provided so as to straddle between the tips of the door bottom side bent pieces 83. In the state where the door bottom side bent piece 73 and the side edge 50 sandwich the thermal expansion fireproof member 9L, the door edge side bent piece 73 and the side edge 50 are fixed with a rivet R, and the door edge side bent piece 83 The side edge 50 and the side edge 50 are fixed with a rivet R in a state where the thermal expansion fireproof member 9L is sandwiched therebetween.

As shown in FIG. 8, between the outdoor side found side 61 of the vertical frame member 6 and the outdoor side found side 61 ′ of the vertical frame member 6 ′ and the door end side portion of the main surface portion 70 of the first surface member 7. The steel door 1 is located between the indoor side finding side 62 of the vertical frame member 6 and the indoor side finding side 62 'of the vertical frame member 6' and the door end side portion of the main surface portion 80 of the second surface member 8. Long thermal expansion refractory members 9M and 9N are provided over the height direction. Between the side edge 60 of the vertical frame member 6 and the door end side bent piece 74 and the door end side bent piece 84 of the first surface material 7 and the second surface material 8, the door end side bent piece 74, An elongate thermal expansion fireproof member 9O is provided over the height direction of the steel door 1 at the front end side of the door end side bent piece 84.

The thermal expansion refractory member 9O that contacts the side edge 60 of the vertical frame member 6 is wider than the thermal expansion refractory members 9C, 9D, 9H, and 9I provided on the upper side 30 and the lower side 40, and the door-end side bent piece 74. The door end side bent piece 84 is provided so as to straddle between the tips. With the door end side bent piece 74 and the side edge 60 sandwiching the thermal expansion refractory member 9O, the door end side bent piece 74 and the side edge 60 are fixed by a rivet R, and the door end side bent piece 84 is fixed. The door end side bent piece 84 and the side edge 60 are fixed by the rivet R in a state where the side edge 60 sandwiches the thermal expansion fireproof member 9O.

On the door end side end surface of the steel door 1, the door end side edge member 1e is fixed to the thermal expansion refractory member 9O and the side 60 by screws S so as to cover the door end side end surface. The door end side edge member 1e is provided with a thermal expansion fireproof member 9P in the height direction, located on the outdoor side.

The thermal expansion refractory members 9 </ b> A to 9 </ b> P are members that foam and expand when heated to a temperature of 150 ° C. to 250 ° C., for example. As the thermal expansion refractory member 9, Fiblock (registered trademark) of Sekisui Chemical Co., Ltd. can be used, for example.

In the present embodiment, adhesive tape is provided on the surface of the sheet-like thermal expansion fire-resistant members 9A to 9P, and the thermal expansion fire-resistant members 9A to 9P are formed of the first surface material 7 and the second surface material 8 by the adhesive tape. And a metal quadrilateral frame (upper frame member 3, lower frame member 4, vertical frame members 5, 6). Furthermore, the front-end | tip part of the 1st surface material 7 and the 2nd surface material 8, ie, the upper side bending pieces 71 and 81, the lower side bending pieces 72 and 82, the door bottom side bending pieces 73 and 83, and the door end side folding. Since the thermal expansion refractory members 9C, 9D, 9H, 9I, 9L, and 9O provided at the tip portions of the curved pieces 74 and 84 are fixed by the rivets R, the first surface is formed when the adhesive force is reduced due to heat. The thermal expansion refractory member is prevented from falling off when the material 7 and the second surface material 8 are thermally deformed.

The main surface portions 70 and 80 of the first surface material 7 and the second surface material 8 are each formed with a vertically rectangular opening corresponding to the window portion. As shown in FIG. 3 and FIG. 9, the first middle bone 12 and the second middle are formed between the main surface portion 70 of the first surface material 7 and the main surface portion 80 of the second surface material 8 in the height direction. The bones 13 are provided at intervals, the first middle bone 12 forms a door-side vertical frame for the window, and the second middle bone 13 forms a door-side vertical frame for the window. . As shown in FIGS. 2 and 6, a short and horizontal upper frame member 14 and a lower frame are positioned between the first and second middle bones 12 and 13 at the upper and lower ends of the window portion, respectively. The material 15 is provided, the upper frame material 14 forms the upper frame material for the window portion, and the lower frame material 15 forms the lower frame material for the window portion. In this way, a metal quadrilateral frame for the window portion is formed from the first middle bone 12, the second middle bone 13, the upper frame member 14, and the lower frame member 15.

As shown in FIG. 6, the upper frame member 14 is suspended from the upper side 140 extending in the expected direction (thickness direction) of the steel door 1, and opposite the end portions of the upper side 140 along the finding surface of the steel door 1. The outdoor side finding side 141 and the indoor side finding side 142 are formed in a substantially U-shape in a sectional view. The outdoor side finding edge 141 is longer than the indoor side finding side 142, and a horizontal bent piece extending toward the indoor side is formed at the lower end of the outdoor side finding side 141. Between the main surface portion 70 of the first surface material 7 and the outdoor side finding side 141, a thermal expansion refractory member 16A is provided across the width direction of the outdoor side finding side 141, and the second surface material 8 Between the main surface portion 80 and the indoor side finding side 142, a thermal expansion refractory member 16B is provided across the width direction of the indoor side finding side 142. On the lower surface of the upper side 140, a thermal expansion refractory member 16C is provided across the width direction of the upper side 140.

Similarly, as shown in FIG. 6, the lower frame member 15 has a lower side 150 extending in the expected direction (thickness direction) of the steel door 1, and is opposed to the both sides of the lower side 150 along the finding surface of the steel door 1. The outdoor side finding edge 151 and the indoor side finding side 152 rising vertically are formed in a substantially U shape in a sectional view. The outdoor side finding side 151 is longer than the indoor side finding side 152, and a horizontal bent piece extending toward the indoor side is formed at the upper end of the outdoor side finding side 151. Between the main surface portion 70 of the first surface material 7 and the outdoor side finding side 151, a thermal expansion refractory member 16 </ b> D is provided across the width direction of the outdoor side finding side 151. Between the main surface portion 80 and the indoor side finding side 152, a thermal expansion refractory member 16E is provided across the width direction of the indoor side finding side 152. On the upper surface of the lower side 150, a thermal expansion refractory member 16F is provided across the width direction of the lower side 150.

As shown in FIG. 9, the first middle bone 12 is opposed to the side 120 extending in the prospective direction (thickness direction) of the steel door 1 along the finding surface of the steel door 1 from both ends of the side 120. Are formed in a substantially U-shape in a cross-sectional view from the outdoor side finding edge 121 and the indoor side finding side 122 extending in a shape. A bent piece extending toward the indoor side is formed on the distal end side of the outdoor side finding edge 121. Between the main surface portion 70 of the first surface material 7 and the outdoor side finding side 121, a thermal expansion refractory member 16G is provided over the height direction of the outdoor side finding side 121, and the second surface material 8 is provided. A thermal expansion refractory member 16 </ b> H is provided between the main surface portion 80 and the indoor side finding side 122 over the height direction of the indoor side finding side 122. A thermal expansion refractory member 16I is provided on the inner surface of the side 120 over the height direction of the side 120.

Similarly, as shown in FIG. 9, the second middle bone 13 extends along the side surface 130 extending in the prospective direction (thickness direction) of the steel door 1 and the finding surface of the steel door 1 from both ends of the side side 130. The outdoor side finding edge 131 and the indoor side finding side 132 extending in a facing manner are formed in a substantially U shape in a sectional view. A bent piece extending toward the indoor side is formed on the distal end side of the outdoor side finding side 131. Between the main surface portion 70 of the first surface material 7 and the outdoor side finding side 131, a thermal expansion refractory member 16J is provided across the height direction of the outdoor side finding side 131, and the second surface material 8 is provided. Between the main surface portion 80 and the indoor side finding side 132, a thermal expansion refractory member 16K is provided over the height direction of the indoor side finding side 132. A thermal expansion refractory member 16 </ b> L is provided on the inner surface of the side 130 over the height direction of the side 130.

As shown in FIG. 6, the upper end portion of the multilayer fire-resistant glass 2 is sandwiched between the outdoor frame base 17 </ b> A and the indoor frame base 17 </ b> B while being received by the upper frame member 14. 2 is sandwiched between the outdoor frame base 17C and the indoor frame base 17D while being received by the lower frame member 15. The outdoor frame bases 17A and 17C and the indoor frame bases 17B and 17D each have a substantially L-shaped cross-sectional view from the expected piece extending in the expected direction and the expected piece extending in the found direction. . The finding piece of the indoor frame base 17B is connected to the indoor finding side 142 by a screw S together with the indoor vertical piece 142 ′ and the fitted piece 180E. The finding piece of the indoor frame base 17D is connected to the indoor finding edge 152 by a screw S together with the indoor vertical piece 152 ′ and the fitting piece 180F.

As shown in FIG. 9, one end in the width direction of the multilayer fire-resistant glass 2 is sandwiched between the outdoor frame base 17E and the indoor frame base 17F while being received by the first inner bone 12. The other end in the width direction of the multilayer fire-resistant glass 2 is sandwiched between the outdoor frame base 17G and the indoor frame base 17H in a state of being received by the second middle bone 13. The finding piece of the outdoor frame base 17E is connected to the outdoor finding side 121 by a screw S together with the fitted piece 180A. The outdoor frame base 17G is connected to the outdoor finding side 131 by a screw S together with the fitted piece 180B. The finding piece of the indoor frame base 17F is coupled to the indoor finding edge 122 by a screw S together with the fitted piece 180C. The indoor frame base 17H is coupled to the indoor side finding edge 132 by a screw S together with the mated piece 180D.

Outdoor decorative malls 18 </ b> A and 18 </ b> B are attached to the outdoor side surface portion of the steel door 1 so as to be located on both sides of the multilayer fireproof glass 2 when viewed from the front, over the entire height of the steel door 1. The outdoor cosmetic malls 18A and 18B are attached to the outdoor side surface portion of the steel door 1 by fitting into the fitting pieces 180A and 180B. Indoor side decorative moldings 18C and 18D are mounted on the indoor side surface portion of the steel door 1 so as to be located on both sides of the multilayer fireproof glass 2 when viewed from the front, over the entire height of the window portion. The indoor cosmetic malls 18C and 18D are attached to the indoor side surface portion of the steel door 1 by being fitted to the fitting pieces 180C and 180D. On the indoor side surface portion of the steel door 1, an upper cosmetic mall 18E and a lower cosmetic mall 18F are mounted so as to connect the upper ends and the lower ends of the left and right indoor cosmetic malls. The upper cosmetic mall 18E and the lower cosmetic mall 18F are attached to the indoor side surface portion of the steel door 1 by being fitted to the fitting pieces 180E and 180F. On the outdoor side surface portion of the steel door 1, a decorative panel 19 is provided between the outdoor decorative malls 18 </ b> A and 18 </ b> B so as to be positioned above and below the window portion.

The space between the main surface portion 70 of the first surface material 7 and the main surface portion 80 of the second surface material 8 is filled with core materials 20 and 21. In the present embodiment, the core material 20 is a phenol foam heat insulating material, and the core material 21 is an aluminum hydroxide core. The core materials 20 and 21 are fixed to the inner surface of the main surface portion 70 and the inner surface of the main surface portion 80 with an adhesive. The phenol foam heat insulating material and the aluminum hydroxide core are merely examples of the heat insulating material, and heat insulating materials made of other materials may be used.

The steel door 1 opens and closes an opening formed from a door frame provided on the housing side. The door frame is formed in a quadrilateral frame shape from the upper frame 22, the lower frame 23, the door bottom side vertical frame 24, and the door end side vertical frame 25. 12 and 13 show a state in which the steel door 1 closes the quadrilateral door frame. The left figure of FIG. 12 is a vertical cross-sectional view of the door device at normal time (non-fire), and the right figure is a vertical cross-sectional view of the door device at the time of fire. The upper view of FIG. 13 is a cross-sectional view of the door device at normal time (non-fire), and the lower view is a cross-sectional view of the door device at the time of fire.

In the present embodiment, when the steel door 1 is exposed to a high temperature during a fire, the thermal expansion refractory members 9C, 9D, 9H, 9I, 9L, and 9O are heated and expanded, and the upper bent pieces 71 and 81 and the lower bent portions are bent. Pieces 72, 82, door end side bent pieces 73, 83, door tip side bent pieces 74, 84, the upper side 30 of the upper frame member 3, the lower side 40 of the lower frame member 4, the vertical frame member 5, The space between the 6 side edges 50 and 60 is closed. Even when a combustible substance (for example, an adhesive for fixing the core materials 20 and 21) inside the steel door 1 is melted and vaporized by heat at the time of fire, the vaporized gas or the molten resin is the first. The first surface material 7, the second surface material 8 and a metal quadrilateral frame (upper frame material 3, lower frame material 4, vertical frame materials 5, 6) are transmitted along the back surfaces of the surface material 7 and the second surface material 8. To the outside of the steel door 1 through the gaps as much as possible.

In the present embodiment, between the outdoor side finding edge 31 of the upper frame member 3 and the upper portion of the main surface portion 70 of the first surface member 7, the indoor side finding side 32 of the upper frame member 3 and the second surface member 8. Thermal expansion and fire-resistant members 9A and 9B are provided between the upper surface portion of the main surface portion 80 and the lower portion of the outdoor surface of the lower frame material 4 and the lower surface portion of the main surface portion 70 of the first surface material 7, respectively. The thermal expansion fire-resistant members 9F and 9G are respectively provided between the indoor side finding side 42 of the lower frame member 4 and the lower portion of the main surface portion 80 of the second surface member 8. Between the outdoor side finding side 51 and the door bottom side portion of the main surface portion 70 of the first surface material 7, the door side side of the indoor side finding side 52 of the vertical frame member 5 and the main surface portion 80 of the second surface material 8. Thermal expansion refractory members 9J and 9K are respectively provided between the parts, and between the outdoor side edge 61 of the vertical frame member 6 and the door end side part of the main surface portion 70 of the first surface member 7, Of frame material 6 Thermal expansion refractory members 9M and 9N are respectively provided between the inner side 62 and the door end side portion of the main surface portion 80 of the second surface material 8, and these thermal expansion refractory members 9A, 9B, 9F, 9G, 9J, 9K, 9M, and 9N act as heat insulating materials. Furthermore, since the thermal expansion refractory members 9A, 9B, 9F, 9G, 9J, 9K, 9M, 9N expand at a predetermined temperature, the thermal expansion refractory members 9A, 9B, 9F, 9G, 9K, 9J, 9M, 9N If there is a gap allowing the expansion of the thermal expansion refractory member in the surroundings, it expands in the space and improves the sealing performance in the event of a fire.

In the present embodiment, the peripheral portions of the first surface material 7 and the second surface material 8 (specifically, the upper bent pieces 71 and 81, the lower bent pieces 72 and 82, the door bottom side bent pieces 73, 83, tip portions of the door end side bent pieces 74 and 84) are provided with thermal expansion fire-resistant members 9C, 9D, 9H, 9I, 9L, and 9O, and the first surface material 7 and the second surface material 8 in the event of a fire. Therefore, instead of the thermal expansion fireproof members 9A, 9B, 9F, 9G, 9J, 9K, 9M, and 9N, a conventional heat insulating resin may be provided.

In the event of a fire, the hot melt 10 closing the hole 300 is melted by heating and the hole 300 is opened, so that the gas generated inside the steel door 1 can be discharged from the hole 300 to the outside of the steel door 1. it can. In the event of a fire, the hot melt melts and the hole 300 is opened before the thermal expansion refractory members 9C and 9D expand, and the gas generated in the initial stage is discharged. The expanded thermal expansion refractory members 9C and 9D All or part of the part 300 is closed. As shown in FIG. 12, the upper end side of the steel door 1 in the closed position and the portion on the indoor side of the hole 300 (the surface of the upper bent piece 81), the portion of the door frame (upper frame 22) facing the portion. The thermal expansion refractory members 9E and 9Q are provided in both parts of the vertical piece), and in the event of a fire, the thermal expansion refractory members 9E and 9Q expand and close the indoor space of the hole portion 300. The gas discharged from the portion 300 (even when it is not blocked by the expanded thermal expansion refractory members 9C and 9D) is prevented from flowing into the indoor side. A thermal expansion refractory member 9 </ b> R is provided on the indoor side portion of the door side vertical frame 25 across the height direction so as to face the door side side portion of the indoor side surface portion of the steel door 1 in the closed posture.

As shown in the right figure of FIG. 12 and the lower figure of FIG. 13, in the event of a fire, the expanded thermal expansion refractory members 9C ′, 9D ′, 9E ′, 9H ′, 9I ′, 9Q ′, 9L ′, 9P ′, 9R ′. As a result, the gap between the steel door 1 and the door frame (upper frame 22, lower frame 23, door bottom side vertical frame 24, door end side vertical frame 25) is closed over four rounds.

In the present embodiment, a window portion is formed in the steel door 1, but the width direction of the outdoor side finding side 141 is between the main surface part 70 of the first surface material 7 and the outdoor side finding side 141. 16 A of thermal expansion fire-resistant members are provided over, and between the main surface part 80 of the 2nd surface material 8 and the indoor side finding side 142, the thermal expansion fireproofing over the width direction of the indoor side finding side 142 is carried out. A member 16B is provided, and a thermal expansion refractory member 16D is provided between the main surface portion 70 of the first surface material 7 and the outdoor side finding side 151 in the width direction of the outdoor side finding side 151. Between the main surface portion 80 of the second surface material 8 and the indoor side finding side 152, a thermal expansion refractory member 16E is provided across the width direction of the indoor side finding side 152, and the first surface material 7 Between the main surface portion 70 and the outdoor side finding edge 121, the thermal expansion refractory member 16G extends in the height direction of the outdoor side finding side 121. The thermal expansion fireproof member 16H is provided between the main surface portion 80 of the second surface material 8 and the indoor-side found side 122 over the height direction of the indoor-side found side 122. A thermal expansion refractory member 16J is provided between the main surface portion 70 of the first surface material 7 and the outdoor side finding side 131 over the height direction of the outdoor side finding side 131. Between the main surface portion 80 and the indoor side finding side 132, a thermal expansion refractory member 16K is provided across the height direction of the indoor side finding side 132, and these thermal expansion refractory members 16A to 16K are Even when it normally acts as a heat insulating material and the flammable substance (for example, an adhesive for fixing the core materials 20 and 21) inside the steel door 1 is melted and vaporized by heat at the time of fire, it is vaporized. Gas or molten resin travels along the back surface of the first surface material 7 and the second surface material 8 From the gap between the first surface material 7 and the second surface material 8 and the metal quadrilateral frame for the window (the first middle bone 12, the second middle bone 13, the upper frame material 14, and the lower frame material 15). Leakage to the outside of the steel door 1 is prevented as much as possible.
[Appendix]
[Concept 1]
A metal quadrilateral frame,
A first metal surface material and a second metal surface material fixed to a metal quadrilateral frame;
A core filled between the first metal surface material and the second metal surface material;
In steel doors with
Between the peripheral edge of the first metal surface material and the peripheral edge of the second metal surface material, and the metal four-circumferential frame, a thermal expansion fireproof member is provided,
Flameproof and insulated steel door.
[Concept 2]
The first metal surface material includes a main surface portion that forms an outdoor side surface portion of the door, and a four-fold bent piece that forms an outdoor portion of the upper surface, the lower surface, and the side surface of the door. A piece forms the peripheral edge of the first metal surface material,
The second metal surface material includes a main surface portion that forms an indoor side surface portion of the door, and a four-fold bent piece that forms an indoor side portion of the upper surface, the lower surface, and the side surface of the door, and the four-fold bending portion. A piece forms the peripheral edge of the second metal surface material,
The four-circumference frame includes an outdoor-side finding surface, an indoor-side finding surface, an upper surface, a lower surface, and a side surface,
A heat insulating member is provided between the main surface portion of the first metal surface material and the outdoor side finding surface of the four-circumferential frame, and between the main surface portion of the second metal surface material and the indoor side finding surface of the four-circular frame. Provided,
A thermal expansion refractory member is provided between the four-fold bent piece of the first metal surface material and the four-fold bent piece of the second metal surface material and the upper surface, the lower surface, and the side surface of the four-frame frame. ,
A flame-insulated and insulated steel door as described in Concept 1.
[Concept 3]
The thermal expansion refractory member is fixed by a fastening member in a state of being sandwiched between a peripheral portion of the first metal surface material and a peripheral portion of the second metal surface material and the metal four-circumference frame. A flame-insulated and heat-insulated steel door according to any one of concepts 1 and 2.
[Concept 4]
The flame-insulated steel door has a window,
The first metal surface material and the second metal surface material have openings corresponding to the window portions, and a window portion is provided between the first metal surface material and the second metal surface material. A metal quadruple frame is provided,
Between the opening peripheral part of the first metal surface material and the opening peripheral part of the second metal surface material, and the metal four-circumference frame for the window part, a thermal expansion refractory member is provided,
The flame-insulated and heat-insulated steel door according to any one of the concepts 1 to 3.
[Concept 5]
The first metal surface material includes an upper bent piece,
The second metal surface material includes an upper bent piece,
At least one hole is formed on the upper surface of the four-circumferential frame, and two rows of thermal expansion fireproof members are provided so as to sandwich the hole,
One thermal expansion refractory member is fixed to the upper bent piece of the first metal surface material,
The other thermal expansion refractory member is fixed to the upper bent piece of the second metal surface material,
The flame-proof heat insulation steel door in any one of the concepts 1-4.
[Concept 6]
A flame-insulated steel door described in Concept 5,
The door frame on the housing side,
A door device comprising:
A thermal expansion fire-resistant member is provided in one or both of the upper end side of the flame-insulated and heat-insulated steel door and the part on the indoor side of the hole, the part of the door frame facing the part, Door device.

DESCRIPTION OF SYMBOLS 1 Steel door 3 Upper frame material 30 Upper side 300 Hole part 4 Lower frame material 40 Lower side 5 Vertical frame material 50 Side 6 Vertical frame material 60 Side 7 First surface material 70 Main surface part 71 Upper bending piece 72 Lower bending Piece 73 door end side bent piece 74 door tip side bent piece 8 second surface material 80 main surface portion 81 upper bent piece 82 lower bent piece 83 door edge side bent piece 84 door tip side bent piece 9A, 9B, 9F, 9G, 9K, 9J, 9M, 9N Thermal expansion refractory member 9C, 9D, 9H, 9I, 9L, 9O Thermal expansion refractory member R Rivet

Claims (2)

A metal quadrilateral frame,
A first metal surface material and a second metal surface material fixed to a metal quadrilateral frame;
A core filled between the first metal surface material and the second metal surface material;
A window,
In steel doors with
An opening is formed in the first metal surface material and the second metal surface material corresponding to the window portion, and between the first metal surface material and the second metal surface material. There are four metal frames around the window,
The window for the metal four circumferential frame is provided with a finding side and expected side extending in prospective direction extending finding direction, the found edge is positioned in the window portion side with respect to the prospective edge And
Wherein the first opening edge of the metal facer and the opening edge of the second metal facer, said find edges, between, Ri Oh provided with a thermal expansion refractory member, during non-fire, One surface of the thermal expansion refractory member is in contact with the peripheral edge of the opening, the other surface is in contact with the finding side, and a gap is formed adjacent to the side of the thermal expansion refractory member. ing,
Flameproof and insulated steel door. The expected side is provided with a thermal expansion refractory member so as to face the glass end surface of the window part,
The flame-insulated and heat-insulated steel door according to claim 1.

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