JP2017197921A - Fireproof facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fireproof facility that suppresses conduction of heat from a side where a fire broke out, when the fire broke out on either a front surface side or a rear surface side of the fireproof facility.SOLUTION: A fire door includes a core material 11X of a mullion 11 that constitutes a frame, a decorative material 42 fitted on the core material 11X, and a bracket 43 and a spacer 46 that form a fitting part on a part of the core material 11X in a longitudinal direction for fitting the decorative material 42 to the core material 11X.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a fire prevention equipment installed in a building and constituting a fire prevention section.

  Conventionally, fire doors are known as an example of fire prevention equipment installed in commercial facilities and buildings such as hospitals. The fire door described in Patent Document 1 as an example includes a core material arranged along the outer peripheral edge of the heat-resistant glass plate, and a decorative material attached to both the front side and the back side of the core material. .

JP-A-8-284544

  By the way, in the fire door of patent document 1, since the decorative material of the front side and back side of a fire door is contacting over the whole longitudinal direction of a core material, one makeup of the front side and back side of a fire door When the material is exposed to a flame, the heat received by the decorative material is transferred over the entire length of one side of the core material. And it heat-transfers over the whole longitudinal direction of the other decorative material of the front side and back side of a fire door from the whole longitudinal direction of the other side of a core material. Thus, since the contact area of the decorative material and the core material on the front side and the rear side of the fire door is large, the heat conduction between the decorative material and the core material on the front side and the back side causes the front side and the back side. The heat of the flame is easily transmitted to the other cosmetic material. For this reason, the temperature of the other decorative material on the front side and the back side of the fire door is likely to rise. Even if the decorative material is not in direct contact with the entire length of the core material, if the area of the surface where the core material and the decorative material face each other in the vicinity is large, radiation may cause the cosmetic material and the core material to radiate. Similar problems arise because heat is transferred between them. In addition, such a problem is not limited to the frame that supports the fireproof glass, but is generally common in a structure in which a decorative material is attached to a structural member (core material) of the frame that constitutes the fireproof door and thus the fireproof window and other fireproofing equipment. To do.

  An object of this invention is to provide the fire prevention equipment which can suppress the heat transfer from the side which the fire generate | occur | produced when a fire generate | occur | produces on one side of the front side and the back side of a fire prevention apparatus.

  [1] A fire prevention equipment according to one aspect of the present invention is provided in a core material that is a constituent member of a frame of the fire protection equipment, a decorative material attached to the core material, and a part of a longitudinal direction of the core material, And an attachment portion for attaching the decorative material to the core material.

  According to this configuration, the attachment portion is provided in a part in the longitudinal direction of the core material, so that the decorative material is in contact with the entire longitudinal direction of the attachment portion that is in contact with the entire longitudinal direction of the core material. Compared to the case of facing, the area for heat transfer between the decorative material and the core material is reduced, so that the amount of heat transferred by heat conduction and radiation from the decorative material to the core material is reduced. As a result, heat transfer from the opposite side of the core to the side opposite to the side where the decorative material that becomes hot due to the flame is attached is suppressed. can do. Here, the term “opposite” refers to a state in which they are arranged in close proximity so that heat transfer by radiation becomes a problem.

  [2] According to one aspect dependent on the fire prevention equipment, a plurality of the attachment portions are provided apart from each other in the longitudinal direction of the core member.

  According to this configuration, by providing a plurality of mounting portions apart from each other, the moment load applied to the mounting portion is reduced as compared with the case where the mounting portion is provided at one place. As a result, the mounting portion is reduced in size. it can. In other words, since the size of the heat conduction path can be reduced, the amount of heat transfer due to heat conduction can be suppressed, and as a result, heat transfer from the side opposite to the side where the decorative material is placed in the fire prevention equipment is suppressed. can do.

  [3] According to one aspect dependent on the fire prevention equipment, the attachment portion interposes a heat insulating material between the core material and the decorative material.

  According to this configuration, it becomes more difficult to transfer heat from the decorative material to the core material by interposing the heat insulating material.

  [4] According to one aspect dependent on the fire prevention equipment, the attachment portion fixes the decorative material by an attachment member from the width direction of the opening in which the fire prevention equipment is provided.

  According to this configuration, it is difficult to see the mounting member when viewed from the front of the opening, so that the aesthetic appearance can be improved.

  According to the fire prevention equipment according to the present invention, when a fire occurs on one of the front side and the back side of the fire prevention equipment, heat transfer from the fire occurrence side can be suppressed.

The front view of the fire door which is an example of fire prevention equipment. Sectional drawing of the fire door cut | disconnected by the 2-2 line of FIG. FIG. 3 is an enlarged view of the door bottom of one sliding door of FIG. 2 and its periphery. FIG. 3 is an enlarged view of the door bottom of the other sliding door of FIG. 2 and its surroundings. (A) The enlarged view of the door tip of the sliding door of FIG. 2 and its periphery, (b) The enlarged view of the door tip of a sliding door when the sliding door is heated in said (a). Sectional drawing of the fire door cut | disconnected by 6-6 line of FIG. FIG. 7 is an enlarged view of a part of the fire door shown in FIG. 6. (A) Sectional drawing of the fire door cut | disconnected by the 8-8 line | wire of FIG. 1, (b) The enlarged view of the dashed-dotted line circle of said (a). (A) Sectional drawing of the fire door cut | disconnected by the 9-9 line | wire of FIG. The disassembled perspective view of a neutral stand and a heat insulation structure. The disassembled perspective view of the neutral standing and heat insulation structure of a comparative example. In the fire door of the modification 1, (a) The exploded perspective view of a core material, a bracket, a decorative material, a spacer, and a fastening member, (b) The exploded perspective view of a core material, a bracket, a spacer, and a fastening member. In the fire door of the modification 2, (a), (b) The exploded perspective view of a core material, a bracket, a decorative material, and a fastening member, (c) The exploded perspective view of a core material, a cosmetic material, and a fastening member. In the fire door of the modification 3, (a), (b) The exploded perspective view of a core material and a bracket. In the fire door of the modification 4, (a)-(d) The side view of a core material, a bracket, and a fastening member. In the fire door of the modification 5, (a) The exploded perspective view of a core material, a bracket, a decorative material, and a fastening member, (b) The exploded perspective view of a core material, a cosmetic material, and a fastening member. In the fire door of the modification 7, (a), (b) The perspective view of a part of bracket. In the fire door of the modification 10, (a)-(c) The schematic cross section of a fireproof board.

  Hereinafter, an embodiment in which fire prevention equipment is embodied as a fire door will be described with reference to the drawings. As shown in FIG. 1, the fire door 1 of the present embodiment is a draw-type fire door. The fire door may be a one-way sliding door instead of the draw type, or an open door, a folding door or other doors instead of the sliding door. Moreover, when showing a direction in description of the fire door 1 below, each direction when the fire door 1 of FIG. 1 is made into the front is used.

  As shown in FIG. 1, the fire door 1 includes a pair of vertical frames 3 arranged at intervals in the longitudinal direction of a rectangular opening 2 formed in a building (including the interior), and a pair of vertical frames. 3 and an invisible eye 4 supported by a pair of vertical frames 3. The vertical frame 3 is made of an iron-based metal and has a hollow shape, and extends in the height direction ZA of the fire door 1. An accommodation space 4 a is formed inside the mesh 4.

  Between the pair of vertical frames 3, the fixed wall 10 </ b> R is attached to the right vertical frame 3 and the fixed wall 10 </ b> L is attached to the left vertical frame 3 in front view of the fire door 1. These fixed walls 10R and 10L are spaced apart from each other, thereby forming an entrance / exit between the fixed walls 10R and 10L. A pair of sliding doors 20R, 20L is arranged between the fixed walls 10R, 10L so that the doorway can be opened and closed. As shown in FIG. 2, in the front-rear direction ZC of the fire door 1 (the normal direction of the door surface of the fire door 1), the sliding doors 20R and 20L are disposed on the front side of the fixed walls 10R and 10L. In the following description, for example, members that are arranged in pairs, such as the vertical frame 3, may be given the same reference for convenience of description.

  As shown in FIG. 2, the fixed walls 10 </ b> R and 10 </ b> L include a neutral stand 11 extending in the height direction ZA. The neutral stand 11 is disposed in the opening 2 at a distance from the vertical frame 3. As shown in FIGS. 1 and 2, at the lower end of the neutral stand 11, a baseboard extending from the neutral stand 11 toward the vertical frame 3 in the opening / closing direction of the sliding doors 20R and 20L (hereinafter referred to as “width direction ZB”). 12 is provided. Thus, the fixed walls 10R and 10L constitute a frame body by the vertical frame 3, the neutral stand 11, the frame body 4X of the lower portion of the intangible 4, and the baseboard 12. A heat-resistant glass 13 is supported in the frame body by a vertical frame 3, a neutral frame 11, a frame 4 </ b> X below the mesh 4, and a baseboard 12. The neutral stand 11 is formed in a hollow column shape by bending a stainless steel plate. Similarly, the baseboard 12 is made of stainless steel and has a hollow shape.

  As shown in FIG. 1, the sliding doors 20R and 20L include a door body 20X and a door support frame 20Y that rotatably supports the door body 20X as an opening door. The door body 20X includes a door end side vertical fence 21 constituting a door tip, a door bottom side vertical fence 22 constituting a door bottom, an upper collar 23 constituting an upper end portion of the sliding doors 20R and 20L, and a lower end portion of the sliding doors 20R and 20L. And a heat-resistant glass 25 disposed in the frame. The door-end side fence 21 and the door-end side fence 22 extend in the height direction ZA, and the upper fence 23 and the lower fence 24 connect the door-end side fence 21 and the door-side side fence 22 to each other. It extends in the width direction ZB. The heat-resistant glass 25 is supported by a door-end side vertical gutter 21, door-toe side vertical gutter 22, upper gutter 23, and lower gutter 24.

  The door support frame 20Y includes a vertical member 26 that supports the door butt side vertical cage 22 via a plurality of hinges 28, and a horizontal member 27 that extends from the upper end of the vertical member 26 along the width direction ZB. The vertical member 26 extends in the height direction ZA, and is disposed adjacent to the door butt side vertical rod 22 in the width direction ZB. The horizontal member 27 is disposed above and adjacent to the upper collar 23 in the height direction ZA. The lateral member 27 is provided with a door hanger (not shown) that is suspended from a traveling rail (not shown) disposed in the unoccupied accommodation space 4a. Through the door hanger, the sliding doors 20R and 20L are supported so as to be slidable in the width direction ZB with respect to the blank 4.

  The sliding doors 20R and 20L are driven so as to approach and separate from each other in the width direction ZB by a drive unit (not shown) disposed in the seamless accommodation space 4a. Thereby, the entrance / exit formed between fixed wall 10R, 10L is opened and closed. In addition, an automatic closing device (not shown) for moving the sliding doors 20R, 20L in the closing direction when it is detected that a fire has occurred in the building where the fire door 1 is installed is included in the blind 4. ) Is provided.

  On the other hand, when the fire door 1 is fully closed, the sliding doors 20R and 20L are allowed to pass by manually rotating the door body 20X toward the back side with the hinge 28 as a fulcrum. The sliding doors 20R and 20L are provided with door closers (not shown) that automatically close the door body 20X after manually rotating the door body 20X. The door closer can adopt a known structure and is disposed in the upper collar 23.

  The door end side vertical fence 21, the door bottom side vertical fence 22, the upper flange 23, the lower flange 24, the vertical member 26, and the horizontal member 27 constituting the sliding doors 20R and 20L are hollow columnar when the stainless steel plate is bent. It is configured. It should be noted that at least one of the door-end side rod 21, the door-side side rod 22, the upper rod 23, the lower rod 24, the vertical member 26 and the horizontal member 27 is made of a steel material other than a stainless steel plate (for example, iron or fireproof steel). It may be configured.

  As shown in FIGS. 3 to 9, the fire door 1 is provided with a plurality of seal structures that block air communication between the front side space and the back side space of the fire door 1. These seal structures block the air communication between the front side space and the rear side space of the fire door 1 during a normal time when fire does not occur (hereinafter simply referred to as “normal time”), and when a fire occurs. The air communication between the front side space and the back side space of the fire door 1 is cut off and heat transfer between the front side space and the back side space is suppressed. The seal structure includes a first seal structure SL1, a second seal structure SL2, a third seal structure SL3, a fourth seal structure SL4, a fifth seal structure SL5, and a sixth seal structure SL6.

  As shown in FIGS. 3 and 4, the first seal structure SL1 is provided between the longitudinal member 26 of the sliding doors 20R, 20L and the front-rear direction ZC between the neutral stand 11 of the fixed walls 10R, 10L. The first seal structure SL1 is attached to the core member 26X of the longitudinal member 26, and has an L-shaped first plate 31a extending from the longitudinal member 26 (core member 26X) toward the neutral 11 and the neutral 11 core. A smoke return 31 is provided which is attached to 11X and is configured by a combination with an L-shaped second plate 31b extending from the neutral stand 11 (core member 11X) toward the longitudinal member 26. A foam material 32 is attached to both ends of the smoke return 31 in the width direction ZB, and an airtight rubber 33 is attached on the foam material 32.

  The foam material 32 is formed in a sheet shape extending in the height direction ZA, and is attached to the smoke return 31 by an adhesive seal, for example. The foam material 32 has a heat insulating property and expands when heated. For example, a graphite-based foam material is used.

  The airtight rubber 33 provided on the first plate 31a is in contact with the second plate 31b in a state where the tip in the width direction ZB is compressed, and the airtight rubber 33 provided on the second plate 31b is in the width ZB. The tip is in contact with the first plate 31a in a compressed state. These airtight rubbers 33 are formed in a hollow substantially tube shape extending in the height direction ZA. The airtight rubber 33 is formed of an airtight material such as silicon rubber.

  The first seal structure SL1 closes the passage of the smoke return 31 by the first plate member 31a and the second plate member 31b coming into contact with each other while the airtight rubber 33 is compressed in a normal state. In the first seal structure SL1, when the temperature rises to a predetermined temperature or more and the foam material 32 expands in the event of a fire, the airtight rubber 33 is further crushed by the smoke return 31, and hot air and smoke are blocked.

  The second seal structure SL <b> 2 is provided between the door butt side vertical rod 22 and the vertical member 26. The second seal structure SL2 is attached to the front side of the door bottom side downarm 22 and has a concave support portion 34 that opens to the front side, an airtight rubber 33 attached in the support portion 34, and a support portion 34. And a plurality of foam materials 32 attached side by side in the front-rear direction ZC of the door bottom side vertical gutter 22. In the second seal structure SL2, the airtight rubber 33 is in contact with the support portion 34 and the vertical member 26 in a compressed state in a normal state, so that the front seal side vertical rod 22 and the vertical member 26 are in the front-rear direction ZC. The gap is blocked. Further, in the second seal structure SL2, when the temperature rises to a predetermined temperature or more and a plurality of foam materials 32 expands in the event of a fire, the foam material 32 causes the door bottom side vertical rod 22 and the vertical member 26 in the width direction ZB. By filling the gap, the gap between the door bottom side vertical rod 22 and the vertical member 26 is closed.

  As shown in FIG. 5A, the third seal structure SL3 is provided so as to be opposed to each other in the width direction ZB in the recess 21a provided in the door-end side vertical fence 21 of the sliding doors 20R, 20L. The third seal structure SL3 includes a plurality of foam materials 32 attached to the recesses 21a and an airtight rubber 35 attached to the recesses 21a and covering the plurality of foam materials 32 from the width direction ZB.

The plurality of foam materials 32 are formed in a sheet shape extending in the height direction ZA, and are arranged in the front-rear direction ZC in the recess 21a.
The airtight rubber 35 is formed of an airtight material such as silicon rubber. The airtight rubber 35 is attached to a slit 21b provided at the center of the recess 21a in the front-rear direction ZC. The airtight rubber 35 includes an attachment portion 35a inserted into the slit 21b and a pair of sheet-like blade portions 35b extending from the attachment portion 35a to both sides in the front-rear direction ZC. The attachment portion 35 a is inserted between the front and rear directions ZC of the foam material 32. The mounting portion 35a is provided with a flange 35c having a length in the front-rear direction ZC that is longer than a portion of the slit 21b facing the front-rear direction ZC in a state where the mounting portion 35a is inserted into the slit 21b. The flange 35c comes into contact with the peripheral edge in the front-rear direction ZC and the width direction ZB in the slit 21b, so that the attachment portion 35a is prevented from coming off from the door-end side vertical rod 21. The blade portion 35b is attached to the surface of the foam material 32 on the door end side so as to cover the foam material 32 in the width direction ZB. The blade portion 35b extends over the entire recess 21a in the front-rear direction ZC. In the blade portion 35b, a seal portion 35d for closing the gap between the door-end side vertical rods 21 of the sliding doors 20R and 20L is provided at the front end portion. Thereby, the seal | sticker part 35d has obstruct | occluded the clearance gap between the door-end side vertical gutters 21 of sliding door 20R, 20L in normal time.

  A thin portion 35e is provided at a boundary portion between the attachment portion 35a and the pair of blade portions 35b, which are the base of the attachment portion 35a. The thin-walled portion 35e is a portion where the thickness of the airtight rubber 35 is reduced. In the present embodiment, the thin-walled portion 35e is configured by providing a recess at the boundary between the mounting portion 35a and the blade portion 35b.

  As shown in FIG. 5 (b), when the foam material 32 is expanded by heating in the event of a fire, the airtight rubber 35 is opposed to the pair of blade portions 35b in the width direction ZB with the thin portion 35e as a fulcrum. It is deformed toward the doorside side downarm 21 to be used. As a result, the pair of blade portions 35b in the airtight rubber 35 on the sliding door 20R side and the pair of blade portions 35b in the airtight rubber 35 on the sliding door 20L side are in contact with each other, and the foam material 32 is the vertical side of the sliding doors 20R and 20L. Fill 21 gaps. Thereby, the clearance gap between the door-end side vertical gutters 21 of the sliding doors 20R and 20L is closed.

  As shown in FIG. 6, the fourth seal structure SL4 is provided between the upper collar 23 and the lateral member 27. As shown in FIG. 7, the fourth seal structure SL4 is provided on the upper end portion and the front side of the upper collar 23, and has a support portion 34 that opens to the front side, and an airtight rubber 33 attached in the support portion 34. And a plurality of foam materials 32 provided on the upper surface of the support portion 34 and the upper collar 23. The plurality of foam materials 32 are arranged in the front-rear direction ZC.

  The fourth seal structure SL4 closes the gap in the front-rear direction ZC between the upper collar 23 and the lateral member 27 by the airtight rubber 33 coming into contact with the lateral member 27 in a compressed state in a normal state. Further, the fourth seal structure SL4 fills the gap in the height direction ZA between the upper collar 23 and the lateral member 27 by the foam material 32 when the temperature rises to a predetermined temperature or more and the foam material 32 expands in the event of a fire. Thus, the gap between the upper collar 23 and the lateral member 27 is closed.

  As shown in FIG. 8A, the fifth seal structure SL <b> 5 is provided between the seamless 4 and the lateral member 27. The fifth seal structure SL5 is also provided in the transverse member 27. As shown in FIG. 8B, the fifth seal structure SL5 is provided on the upper end portion and the back side of the smoke member 36 provided between the transverse member 27 and the invisible eye 4, and the transverse member 27, The support part 34 opened to the back side, the foam material 32a attached to the bottom surface in the support part 34, and the airtight rubber 33 attached to the foam material 32a are provided. The airtight rubber 33 is accommodated in the support portion 34. The smoke return 36, the support portion 34, the foam material 32a, and the airtight rubber 33 extend in the width direction ZB.

  Further, the fifth seal structure SL5 includes a foam material 32b disposed at the lower end portion of the gap of the smoke return 36, a plurality of foam materials 32c arranged in the front-rear direction ZC on the upper surface of the support portion 34 and its periphery, and a lateral member. 27 is provided with a plurality of foam materials 32d arranged in the front-rear direction ZC on the upper surface of a plate material 36a constituting the smoke return 36 attached to the upper end surface of 27. The plate material 36 a is disposed above the support portion 34. Therefore, the plurality of foam materials 32c and 32d are opposed to the plate material 36a in the height direction ZA. These foam materials 32c and 32d extend in the width direction ZB. The plurality of foam materials 32d arranged on the plate material 36a are opposed to the seamless receiving metal fitting 4c, and the foam material 32d and the receiving metal fitting 4c extend in the width direction ZB.

  Since the fifth seal structure SL5 is a sliding part of the sliding door, the air-tight rubber 33 normally contacts the smoke return 36 with zero touch to close the space between the lateral member 27 and the invisible eye 4. When the fifth seal structure SL5 expands when the temperature rises to a predetermined temperature or more when the fire occurs and the foam materials 32a to 32d are heated, the foam material 32a to 32d supports the gap between the smoke return 36 and the support. The gap between the portion 34 and the plate material 36a and the gap between the plate material 36a (the lateral member 27) and the invisible member 4 are filled. Thereby, the clearance gap between the smoke return 36, the clearance gap between the support part 34 and the plate material 36a, and the gap gap between the plate material 36a (the lateral member 27) and the seamless member 4 are closed.

  As shown in FIG. 9A, the sixth seal structure SL <b> 6 is provided between the core material 24 </ b> X of the lower rod 24 and the installation surface P of the fire door 1. As shown in FIG. 9 (b), the sixth seal structure SL6 includes an airtight rubber 37 attached to the lower end portion on the front side of the core member 24X of the lower collar 24, and the airtight rubber 37 as a core material 24X of the lower collar 24. And a pressing plate 38 that presses between the two. The tip of the airtight rubber 37 is in contact with the installation surface P. The airtight rubber 37 is formed of an airtight material such as silicon rubber. The airtight rubber 37 is formed in an L shape in a side view of the fire door 1 and extends in the width direction ZB. In the sixth seal structure SL6, the airtight rubber 37 is in contact with the installation surface P in a normal state, thereby closing the gap between the lower collar 24 and the installation surface P. The sixth seal structure SL6 is not provided with a foam material. This is because the flow of air is directed from the outside of the fire prevention section where there is no fire to the inside of the fire prevention section where the fire is occurring, so that it is difficult for flames and smoke to go out of the fire prevention section. Therefore, no foam material is required.

  As shown in FIGS. 3 to 9, the airtight rubber 33 of the second seal structure SL2, the airtight rubber 35 of the third seal structure SL3, the airtight rubber 33 of the fourth seal structure SL4, and the airtight rubber 37 of the sixth seal structure SL6. Even if the position of these airtight rubbers 33, 35, 37 is shifted in the front-rear direction ZC, any one of the airtight rubbers 33, 35, 37 fills the gap caused by the shift. For this reason, it is suppressed that the front side space and the back side space communicate with each other due to the displacement of the positions of the airtight rubbers 33, 35, and 37 in the front-rear direction ZC.

  As shown in FIGS. 3 to 9, the fire door 1 is transmitted to the other of the front side space and the rear side space, for example, when a fire occurs in one of the front side space and the rear side space of the fire door 1. A plurality of heat shield structures that suppress heating are provided. The plurality of heat shield structures are provided on each of the front side and the back side of the core material that is a constituent member of the frame in the fire door 1 such as a fence or a neutral stand. The plurality of heat shield structures include a first heat shield structure TB1, a second heat shield structure TB2, a third heat shield structure TB3, a fourth heat shield structure TB4, a fifth heat shield structure TB5, a sixth heat shield structure TB6, 7 heat insulation structure TB7, 8th heat insulation structure TB8, and 9th heat insulation structure TB9 are provided. Since the first heat shield structure TB1 to the ninth heat shield structure TB9 have substantially the same configuration, the second heat shield structure TB2 to the ninth heat shield structure TB9 are different from the first heat shield structure TB1 in detail. explain.

  As shown in FIGS. 3 and 4, the first heat shield structure TB <b> 1 is provided on the front side and the back side of the core material 11 </ b> X of the neutral 11. The first heat shield structure TB1 includes a plurality of fireproof plates 41 disposed on the front side and the back side of the core material 11X, and a decorative material 42 that covers each of the front side fireproof plate 41 and the rear side fireproof plate 41. The bracket 43 which is an example of the attachment part which attaches the decorative material 42 to the core material 11X is provided. In the first heat shield structure TB1 to the ninth heat shield structure TB9 of the present embodiment, the number of the front side fireproof plates 41 is smaller than the number of the rear side fireproof plates 41. In each of the first heat shield structure TB1 to the ninth heat shield structure TB9, the number of the front side fireproof plates 41 and the number of the rear side fireproof plates 41 are arbitrary setting items, and the front side fireproof plates 41. May be equal to or greater than the number of the refractory plates 41 on the back side. In addition, although the calcite board (calcium silicate board) is used for the fireproof board 41 in this embodiment, it is not restricted to this, A gypsum board may be sufficient. Moreover, although the bracket 43 is comprised with metals, such as stainless steel, it is comprised so that intensity | strength may become weaker than a core material.

  In the first heat shield structure TB1, a plurality of brackets 43 are attached to the front surface and the back surface of the core material 11X, for example, by welding. A single refractory plate 41 is fixed to the front surface of the core material 11 </ b> X by a plurality of screws 44. The plurality of screws 44 are screwed into the fireproof plate 41 and the core material 11X at positions spaced in the height direction ZA. One end of the decorative material 42 is attached to one end of the bracket 43 in the width direction ZB by a screw 45 which is an example of an attachment member for fixing the decorative material 42. The other end of the decorative material 42 is attached to the core material 11X with a screw 45 as an example of an attachment member via a spacer 46. The spacer 46 is an example of an attachment portion that attaches the decorative material 42 to the core material 11X.

  On the other hand, two fireproof plates 41 laminated in the front-rear direction ZC are fixed to the back surface of the core material 11X by a plurality of screws 44. Both ends of the decorative material 42 are attached by brackets 43 and screws 45 on both sides in the width direction ZB, and the decorative material 42 is configured separately from the smoke return 31 of the first seal structure SL1.

  The second heat shield structure TB2 is provided on the front side and the back side of the core member 26X of the vertical member 26. The refractory plate 41 on the front side of the core material 26X is longer in the width direction ZB than the length in the width direction ZB of the core material 26X and the length in the width direction ZB of the refractory plate 41 on the back side of the core material 26X. . In the fireproof plate 41 on the front side, the end of the door butt side vertical rod 22 in the width direction ZB overlaps with the door butt side vertical rod 22 in the front-rear direction ZC. For this reason, the length in the width direction ZB of the decorative material 42 that covers the fireproof plate 41 on the front side of the core material 26X and the bracket 43 to which the decorative material 42 is attached are the decorative material 42 and the bracket 43 on the back surface side of the core material 26X. Longer than the length in the width direction ZB. Thereby, the airtight rubber | gum 33 of 2nd seal structure SL2 can be made to contact the vertical member 26. FIG. The decorative material 42 on the front side of the core material 26X is not directly attached to the core material 26X, but is attached to the bracket 43 with screws 45. The decorative material 42 on the back side of the core material 26X is attached to the bracket 43 with screws 45 so as to cover the fireproof plate 41 with a space in the front-rear direction ZC. In the second heat shield structure TB2, the longitudinal direction of the decorative material 42 is the height direction ZA, similar to the longitudinal direction of the core member 26X of the longitudinal member 26.

  The third heat shield structure TB3 is provided on the front side and the back side of the core member 22X of the door butt side vertical gutter 22. Since the pressing edge 29 for holding the heat-resistant glass 25 is provided on the front side of the core material 22X, the length in the width direction ZB of the fire-proof plate 41 on the front side of the core material 22X is the fire-resistant plate 41 on the back side. Shorter than the length in the width direction ZB. For this reason, the length in the width direction ZB of the decorative material 42 and the bracket 43 on the front side of the core material 22X is shorter than the length in the width direction ZB of the decorative material 42 and the bracket 43 on the back side. A support portion 34 of the second seal structure SL2 is formed integrally with the decorative material 42 on the front side of the core material 22X. The front side decorative material 42 is attached by a bracket 43 and a screw 45 on one side in the width direction ZB, and is attached by a core material 22X and a screw 45 via the bottom surface of the support portion 34 on the other side in the width direction ZB. . On this screw 45, the airtight rubber 33 of the second seal structure SL2 is disposed, and the airtight rubber 33 is covered from the front-rear direction ZC by the second heat shield structure TB2 on the front side of the core member 26X of the vertical member 26. Yes. In the third heat shield structure TB3, the longitudinal direction of the decorative material 42 is the height direction ZA, similar to the longitudinal direction of the core material 22X of the door butt side vertical gutter 22.

  On the other hand, in the third heat shield structure TB3 on the back side of the core member 22X of the door bottom side vertical rod 22, a part of the door bottom side vertical rod 22 overlaps with the vertical member 26 in the front-rear direction ZC. Thereby, when the foam material 32 of the second seal structure SL2 is heated and expanded in the event of a fire, the expansion to the back side of the foam material 32 is restricted by the third heat shield structure TB3. It becomes easy to fill a gap between the door bottom side vertical rod 22 and the vertical member 26.

  In addition, the third heat shield structure TB3 on the back side of the core member 22X of the door butt side vertical gutter 22 has an edge 29 attached to the side surface of the core member 22X in the width direction ZB and the end portion of the heat-resistant glass 25 in the width direction ZB. Forming a space for housing The heat-resistant glass 25 is supported by the door bottom side vertical gutter 22 in this space.

  As shown in FIG. 5A, the fourth heat shield structure TB <b> 4 is provided on the front side and the back side of the core material 21 </ b> X of the door end side vertical gutter 21. The fourth heat shield structure TB4 has substantially the same configuration as the third heat shield structure TB3 except that the second seal structure SL2 is not provided. For this reason, the front side fourth heat shield structure TB4 is provided over the entire width direction ZB of the front side of the door-end side vertical gutter 21. Further, a recess 21a is formed by the door-end side vertical fence 21, the front-side fourth heat shield structure TB4, and the back-side fourth heat shield structure TB4. In the fourth heat shield structure TB4, the longitudinal direction of the decorative material 42 is the height direction ZA, similar to the longitudinal direction of the core material 21X of the door-end side vertical gutter 21.

  As shown in FIG. 6, the fifth heat shield structure TB <b> 5 is provided on the front side and the back side of the core member 23 </ b> X of the upper collar 23. Since the fourth seal structure SL4 is provided on the front surface side of the core material 23X, the length in the height direction ZA of the fireproof plate 41 is the length in the height direction ZA of the core material 23X and the back surface side of the core material 23X. It is shorter than the length of the fireproof plate 41 in the height direction ZA. As shown in FIG. 7, the support portion 34 of the fourth seal structure SL4 is integrally formed on the decorative material 42 on the front side of the core material 23X. Accordingly, the fifth heat shield structure TB5 and the fourth seal structure SL4 on the front side of the core member 23X are provided adjacent to each other in the height direction ZA. Further, the decorative material 42 on the front side of the core material 23X is attached to the upper end portion of the core material 23X with a screw 45 via the bottom surface of the support portion 34 at the upper portion thereof, and the lower end portion of the core material 23X with the screw 45 at the lower end portion thereof. Is attached. In the fifth heat shield structure TB5, the longitudinal direction of the decorative material 42 is the width direction ZB, similar to the longitudinal direction of the core member 23X of the upper collar 23.

  The fifth heat shield structure TB5 on the back side of the core material 23X protrudes on both sides in the height direction ZA of the core material 23X. Thereby, in the height direction ZA, the distance between the back side fifth heat shield structure TB5 and the back side sixth heat shield structure TB6 is the core material 23X of the upper collar 23 and the core material 27X of the lateral member 27. It becomes smaller than the distance between. For this reason, when the foam material 32 of the fourth seal structure SL4 is heated and expanded in the event of a fire, the expansion of the foam material 32 to the back side is limited by the back surface side fifth heat shield structure TB5. The material 32 can easily fill the gap between the core material 23X of the upper collar 23 and the core material 27X of the lateral member 27.

  Further, the lower end portion of the fifth heat shield structure TB5 on the back side forms a space for accommodating the upper end portion of the heat-resistant glass 25 together with the lower end portion of the core member 23X of the upper collar 23. The heat-resistant glass 25 is supported by the upper collar 23 in this space.

  As shown in FIG. 6, the sixth heat shield structure TB <b> 6 is provided on the front side and the back side of the core member 27 </ b> X of the transverse member 27. The sixth heat shield structure TB6 on the front side of the core material 27X has a length in the height direction ZA that is longer than a length in the height direction ZA of the core material 27X, and projects downward from the core material 27X. In the front-side sixth heat shield structure TB6, the portion protruding downward from the core material 27X is opposed to the fourth seal structure SL4 in the front-rear direction ZC, and the hermetic rubber 33 of the fourth seal structure SL4 is in contact therewith. . Further, the lower end portion of the front-side sixth heat shield structure TB6 is opposed to the upper end portion of the front-side fifth heat shield structure TB5 of the core member 23X of the upper collar 23 with an interval in the front-rear direction ZC. In the sixth heat shield structure TB6, the longitudinal direction of the decorative material 42 is the width direction ZB, as is the longitudinal direction of the core member 27X of the transverse member 27.

As shown in FIG. 8A, the decorative material 42 on the front side of the core material 27 </ b> X is attached to the bracket 43 with screws 45 at each of an upper end portion and a lower end portion thereof.
In the sixth heat shield structure TB6 on the back side of the core material 27X, three fireproof plates 41 are laminated in the front-rear direction ZC. Of the three refractory plates 41, the length of the rearmost refractory plate 41 in the height direction ZA is shorter than the length of the other two refractory plates 41 in the height direction ZA. The upper part of the decorative material 42 of the sixth heat shield structure TB6 on the back side has a step shape along the shape of the upper ends of the three fireproof plates 41. A fifth seal structure SL5 is arranged above the rearmost fireproof plate 41. With such a configuration of the fireproof plate 41 and the decorative material 42, the airtight rubber 33 of the fifth seal structure SL <b> 5 can be accommodated in the stepped portion of the decorative material 42. A support portion 34 of the fifth seal structure SL5 is configured by attaching an L-shaped support frame 34a to the top of the decorative material 42. The cosmetic material 42 on the back side is attached to the bracket 43 with screws 45 at the upper end and the lower end.

  A plurality of refractory plates 41 extending in the width direction ZB are stacked in the front-rear direction ZC on the back side of the seamless 4. Thereby, when a fire occurs in the back side space, the unoccupied accommodation space 4a is suppressed from being heated.

  As shown in FIG. 9, the seventh heat shield structure TB <b> 7 is provided on the front side and the back side of the core member 24 </ b> X of the lower collar 24. The length in the height direction ZA of the seventh heat shield structure TB7 on the front surface side of the core material 24X is equal to the length in the height direction ZA of the core material 24X, and the length of the seventh heat shield structure TB7 on the back surface side of the core material 24X. The length in the height direction ZA is longer than the length in the height direction ZA of the core material 24X, and protrudes upward from the core material 24X. The portion of the seventh heat shield structure TB7 on the back side that protrudes upward from the core member 24X forms a space that accommodates the lower end portion of the heat-resistant glass 25 together with the pressing edge 29 provided at the upper end portion on the front side of the core member 24X. ing. The heat-resistant glass 25 is supported by the lower eyelid 24 in this space. In the seventh heat shield structure TB7, the longitudinal direction of the decorative material 42 is the width direction ZB, similar to the longitudinal direction of the core member 24X of the lower collar 24.

  As shown in FIG. 6, the eighth heat shield structure TB <b> 8 is provided on the front side and the back side of the lower frame 4 </ b> X of the seamless 4. The eighth heat shield structure TB8 on the front side of the frame 4X has a longitudinal direction ZC in the longitudinal direction with respect to the height direction ZA in a side view in the frame 4X having an accommodation space that extends in the width direction ZB and opens upward. The fireproof board 41 is arrange | positioned so that it may become. On the other hand, the back surface side eighth heat shield structure TB8 extends in the width direction ZB, and the height direction ZA is the longitudinal direction with respect to the front-rear direction ZC in the frame 4X having an accommodation space opened upward. A single refractory plate 41 is arranged in a state of being stacked in the front-rear direction ZC. In the eighth heat shield structure TB8, the longitudinal direction of the decorative material 42 is the width direction ZB, as is the longitudinal direction of the lower frame 4X of the mesh 4.

  As shown in FIG. 9, the ninth heat shield structure TB9 is provided on the front side and the back side of the core 12X of the lower base 12. The ninth heat shield structure TB9 on the back side of the core material 12X has the same configuration as the seventh heat shield structure TB7 on the back side of the lower rib 24, but the ninth heat shield structure TB9 on the front side has the lower rib 24 This is different from the configuration of the seventh heat shield structure TB7 on the front side. In the ninth heat shield structure TB9, the longitudinal direction of the decorative material 42 is the width direction ZB, similar to the longitudinal direction of the core member 12X of the baseboard 12.

  As shown in FIGS. 6 to 9, the number of the fireproof plates 41 with the heat shield structure provided above the fire door 1 is larger than the number of the fire plates 41 with the heat shield structure provided below the fire door 1. . Specifically, the sixth heat shield structure TB6 has four fireproof plates 41, and the fifth heat shield structure TB5 is three fireproof plates 41, but one sheet on the front side of the sixth heat shield structure TB6. Since the refractory plate 41 overlaps with the upper portion of one refractory plate 41 on the front side of the fifth heat shield structure TB5 in the front-rear direction ZC, the number of refractory plates 41 is four at the upper portion of the fifth heat shield structure TB5. Become. On the other hand, the number of the fireproof plates 41 of the seventh heat shield structure TB7 which is a heat shield structure below the fire door 1 is three. For this reason, it is possible to improve the heat shielding performance above the fire door 1 that is likely to become higher temperature when a fire occurs.

  Further, when a fire occurs on the front side of the fire door 1, the heated air moves upward, so that the air pressure above the fire door 1 increases. On the other hand, as shown by a two-dot chain line in FIG. 6, a clearance communicating with the accommodation space 4a of the seamless 4 is formed on the inspection port 4b side of the seamless 4 so that the heated air is contained in the storage space 4a. Get in. Thereby, the upper part of the transverse member 27 is heated. That is, the transverse member 27 is heated with respect to the two surfaces of the front side and the upper side.

  On the other hand, the sixth heat shield structure TB6 suppresses heat transfer by the four fireproof plates 41 to the back side and below from the lateral member 27. The fifth seal structure SL5 is provided in the sixth heat shield structure TB6 by closing the gap between the plate material 36a and the intangible 4 by the expansion of the foam material 32 attached to the upper surface of the plate material 36a of the smoke return 36. The expanded foam material 32 expands to close the gap between the sixth heat shield structure TB6 and the plate material 36a. This further suppresses heat transfer from the seamless 4 to the back side and below the lateral member 27.

  Further, when smoke is generated on the front side of the fire door 1 at the initial stage of the fire, the front side space and the rear side space of the fire door 1 around the sliding doors 20R and 20L by the first seal structure SL1 to the sixth seal structure SL6 Since the gap which communicates is closed, it is suppressed that smoke enters the back side space.

Next, with reference to FIG. 10, the detailed structure of 1st heat insulation structure TB1 which is one of the heat insulation structures is demonstrated.
Three brackets 43 are arranged at intervals in the height direction ZA on each of the front surface 11a and the back surface 11b of the core material 11X of the neutral stand 11. The bracket 43 disposed on the front surface 11a side is a common part, and is formed by bending a stainless steel plate with a press or the like. Moreover, the bracket 43 arrange | positioned at the back surface 11b side is a common component, and is formed by bending a stainless steel plate with a press etc. FIG. Both the bracket 43 disposed on the front surface 11a side and the bracket 43 disposed on the back surface 11b side are disposed at the upper end portion, the central portion, and the lower end portion of the core material 11X. These brackets 43 are attached to the front surface 11a and the back surface 11b of the core material 11X by, for example, spot welding.

  In addition, in the portion on the front surface 11a side of the core material 11X, spacers 46 are arranged at the upper end portion, the central portion, and the lower portion of the side surface on one side in the width direction ZB. In the height direction ZA, the positions of the spacers 46 at the upper end and the center are equal to the positions of the bracket 43 at the upper end and the center. The position of the lower spacer 46 is above the position of the bracket 43 at the lower end. The spacer 46 is made of stainless steel, but may be made of another metal material such as iron or refractory steel or a resin material. As shown in FIG. 10, the area of the spacer 46 (the area of the portion that contacts the side cover portion 42 b of the decorative material 42) is smaller than the area of the side cover portion 42 b of the decorative material 42. The dimension in the height direction ZA of the spacer 46 of this embodiment is substantially equal to the dimension in the height direction ZA of the decorative material support portion 43 b of the bracket 43. Further, the dimension of the spacer 46 in the front-rear direction ZC is equal to or smaller than the dimension of the side cover part 42 b of the decorative material 42 in the front-rear direction ZC. The size and shape of the spacer 46 can be arbitrarily changed. The spacer 46 should just be a magnitude | size and a shape which contact a part of longitudinal direction (height direction ZA) of the side cover part 42b of the decorative material 42. FIG. These spacers 46 are arranged separately in the height direction ZA. The spacer 46 and the side cover portion 42b of the decorative material 42 may be fixed to each other with the screw 45 in a state where the spacer 46 and the side cover portion 42b face each other with a slight gap. Further, the spacer 46 may be integrated as long as it does not face the side cover portion 42b of the decorative material 42.

  These brackets 43 include a long plate-like core material attachment portion 43a extending in the width direction ZB, and a pair of decorative material support portions 43b extending in the front-rear direction ZC on both sides of the width direction ZB of the core material attachment portion 43a. . Since the number of fireproof plates 41 arranged on the front surface 11a side of the core material 11X is smaller than the number of fireproof plates 41 arranged on the back surface 11b side of the core material 11X, the makeup in the bracket 43 arranged on the front surface 11a side. The length of the material support portion 43b in the front-rear direction ZC is shorter than the length of the decorative material support portion 43b in the front-rear direction ZC of the bracket 43 disposed on the back surface 11b side.

  The refractory plate 41 is a plate-like member whose longitudinal direction is the height direction ZA with respect to the width direction ZB. As shown in FIG. 10, the fireproof plate 41 is substantially equal to the length of the core material 11X in the height direction ZA. The fireproof plate 41 is disposed between the pair of decorative material support portions 43 b in the width direction ZB, and sandwiches the core material mounting portion 43 a between the neutral plate 11.

  The decorative material 42 is formed by bending a stainless steel plate. The decorative material 42 includes a cover main body 42a that covers the entire surface in the front-rear direction ZC of the fireproof plate 41 from the front-rear direction ZC, and a side cover portion 42b that covers the entire surface in the width direction ZB of the fireproof plate 41 from both sides in the width direction ZB. Is provided. Each of the upper end portion, the central portion, and the lower end portion of the side cover portion 42b is provided with an insertion hole 42c penetrating the side cover portion 42b in the width direction ZB. In the decorative material 42 arranged on the front surface 11a side, one side cover portion 42b in the width direction ZB is attached to the core material 11X, and the other side cover portion 42b in the width direction ZB is attached to the bracket 43. The length in the front-rear direction ZC of one side cover portion 42b in the width direction ZB is longer than the length in the front-rear direction ZC of the other side cover portion 42b in the width direction ZB. Further, since the number of the fireproof plates 41 on the front surface 11a side is smaller than the number of the fireproof plates 41 on the rear surface 11b side, the front and back sides of the side cover portion 42b (the other side cover portion 42b) of the decorative material 42 on the front surface 11a side. The length in the direction ZC is shorter than the length of the side cover portion 42b of the decorative material 42 on the back surface 11b side.

  In the decorative material 42 arranged on the front surface 11 a side, one side cover portion 42 b covers a portion on the front surface 11 a side of the core material 11 </ b> X from one side in the width direction ZB, and the other side cover portion 42 b is the bracket 43. The decorative material support portion 43b is covered from the other side in the width direction ZB. Then, the screw 45 is inserted into the insertion hole 42 c on one side of the decorative material 42 and screwed into the mounting hole 11 c provided on one side surface in the width direction ZB of the neutral stand 11, and the screw 45 is attached to the decorative material 42. It is inserted into the insertion hole 42c on the other side and screwed into the attachment hole 43c of the decorative material support portion 43b of the bracket 43. Thereby, the decorative material 42 is attached to the bracket 43. At this time, the spacer 46 is sandwiched between the one side surface in the width direction ZB and the one side cover portion 42b on the front surface 11a side of the core material 11X. That is, although the core material 11X and the decorative material 42 face each other in the width direction ZB due to the spacer 46, they are not in direct contact with each other. The attachment holes 11c and 43c are screw holes for screwing with the screws 45.

  As for the decorative material 42 arrange | positioned at the back surface 11b side, a pair of side cover part 42b covers the decorative material support part 43b of the bracket 43 from the width direction ZB. Then, the screw 45 is inserted into the insertion hole 42 c of the decorative material 42 and screwed into the attachment hole 43 c of the decorative material support portion 43 b of the bracket 43, so that the decorative material 42 is attached to the bracket 43. The attachment holes 11c and 43c may be insertion holes into which the screws 45 are inserted, and the decorative material 42 may be fixed to the bracket 43 or the neutral stand 11 with screws and nuts (not shown) as attachment members. Moreover, it is good also as a structure which fixes the decorative material 42 to the bracket 43 or the core material 11X with a nail (not shown), an adhesive tape, or an adhesive as another attachment member.

  Further, in the first heat insulating structure TB1, the portion where the decorative material 42 and the bracket 43, which is an example of the attachment portion, are in contact with the side cover of the decorative material 42 in the longitudinal direction (height direction ZA) of the decorative material 42. It is a part of the part 42b. Three brackets 43 are provided apart from each other in the longitudinal direction (height direction ZA) of the core material 11X, that is, at the upper end portion, the central portion, and the lower end portion of the core material 11X. Further, in the first heat insulating structure TB1, the upper end portion, the center portion, and the lower end portion of the core material 11X in the longitudinal direction (height direction ZA) of the decorative material 42 are in the portion where the decorative material 42 and the core material 11X are in contact with each other. A spacer 46 disposed in the middle is interposed. For this reason, the part where the decorative material 42 and the spacer 46 are in contact is a part of the side cover portion 42 b of the decorative material 42 in the longitudinal direction (height direction ZA) of the decorative material 42.

  Note that the second heat shield structure TB2 to the seventh heat shield structure TB7 and the ninth heat shield structure TB9 are also provided with an attachment structure of the bracket 43 and the decorative material 42 as an example of the attachment portion. In the core material 22X of the door bottom side vertical rod 22 extending in the height direction ZA, the core material 26X of the vertical member 26, and the core material 21X of the door tip side vertical rod 21, a plurality of brackets 43 are provided in the same manner as the first heat shield structure TB1. Are arranged at intervals in the height direction ZA. On the other hand, in the core member 27X of the transverse member 27 extending in the width direction ZB, a plurality of brackets 43 are similarly arranged at intervals. As shown in FIG. 7 and FIG. 9A, they are arranged on the back surface side of the core material 23X of the upper collar 23, on the back surface side of the core material 24X of the lower collar 24, and on the back surface side of the core material 12X of the baseboard 12, respectively. Since the bracket 43 to be used is a member constituting a glass groove for holding the heat-resistant glasses 25 and 13, it is formed of a through member extending in the width direction ZB. In this case, one end of the decorative material 42 is attached with a screw 45 via a spacer 46 (see FIG. 10).

  The operation of this embodiment will be described. The following description is based on a comparison between the first heat shield structure TB1 shown in FIG. 10 and the first heat shield structure of the comparative example shown in FIG. 11 (hereinafter referred to as “comparative heat shield structure TBC”).

  As shown in FIG. 11, the comparative heat-insulating structure TBC has a metal (for example, iron) bracket 100 that has the same length as the core material 11 </ b> X and the decorative material 42 in the height direction ZA, instead of the bracket 43. Prepare. The bracket 100 includes a core material attachment portion 101 that contacts the entire front surface 11a and back surface 11b of the core material 11X, and a cosmetic material support that extends in the front-rear direction ZC from both ends of the core material attachment portion 101 in the width direction ZB. Unit 102. The decorative material support portion 102 has the same length as the core material 11X and the decorative material 42 in the height direction ZA. Attachment holes 103 are formed in the upper end portion, the central portion, and the lower end portion of the decorative material support portion 102. The attachment hole 103 is a screw hole into which the screw 45 is screwed. The decorative material support portion 102 and the side cover portion 42b of the decorative material 42 are in contact with each other over the entire surface.

  The front-side decorative material 42 is attached to the decorative material support portion 102 of the front-side bracket 100 on one side in the width direction ZB by screws 45, and the front side on the side surface in the width direction ZB of the core material 11X on the other side in the width direction ZB. It is attached to this part by screws 45. In the comparative heat shield structure TBC, the spacer 46 is not provided between the other side surface in the width direction ZB of the core material 11X and the other side cover portion 42b in the width direction ZB of the decorative material 42 on the front side. That is, the other side surface in the width direction ZB of the core material 11X and the other side cover portion 42b in the width direction ZB of the decorative material 42 are directly in the entire longitudinal direction (height direction ZA) of the decorative material 42. Touching and facing. On the other hand, the decorative material 42 on the back side is attached to each decorative material support portion 102 of the bracket 100 by screws 45.

  In the comparative heat shield structure TBC, for example, when a fire occurs in the front space of the fire door 1, the decorative material 42 on the front surface 11a side is heated. At this time, the heat of the decorative material 42 on the front surface 11a side is in contact with both the decorative material support portions 102 and the side cover portions 42b of the bracket 100 on the front surface 11a side through both side cover portions 42b. It is transmitted to the side surface of the material 11X in the width direction ZB by heat conduction. The heat transmitted to the decorative material support portion 102 of the bracket 100 on the front surface 11a side is transmitted to the front surface 11a of the core material 11X through the core material attachment portion 101 by heat conduction. For this reason, the heat of the decorative material 42 on the front surface 11a side is directly or indirectly transmitted to the core material 11X by heat conduction.

  Here, since both side cover portions 42b of the decorative material 42 on the front surface 11a side are in contact with and face the decorative material support portion 102 of the bracket 100 on the front surface 11a side, the decorative material on the front surface 11a side. The size of the heat conduction path between both side cover portions 42b in 42 and the decorative material support portion 102 of the bracket 100 on the front surface 11a side is increased. Thereby, the amount of heat transfer by heat conduction from the decorative material 42 on the front surface 11a side to the bracket 100 on the front surface 11a side increases. In addition, since the core material mounting portion 101 of the bracket 100 on the front surface 11a side is in contact with and faces the entire front surface 11a of the core material 11X, that is, with the core material mounting portion 101 of the bracket 100 on the front surface 11a side. Since the size of the heat conduction path with the core material 11X is large, the amount of heat transfer by heat conduction from the bracket 100 on the front surface 11a side to the front surface 11a of the core material 11X increases. The heat transmitted to the front surface 11a of the core 11X is transmitted to the bracket 100 on the back surface 11b side via the back surface 11b, and the heat transmitted to the bracket 100 on the back surface 11b side is applied to the decorative material 42 on the back surface 11b side. To be told. Here, the entire surface in the longitudinal direction (height direction ZA) of the core material mounting portion 101 of the bracket 100 on the back surface 11b side is in contact with and opposed to the back surface 11b of the core material 11X, that is, from the core material 11X to the back surface. Since the size of the heat conduction path to the bracket 100 on the 11b side is large, the amount of heat transfer by heat conduction from the back surface 11b of the core material 11X to the bracket 100 on the back surface 11b side increases. And since both the side cover parts 42b in the decorative material 42 on the back surface 11b side are in contact with and opposed to both of the decorative material support portions 102 of the bracket 100 on the back surface 11b side, The size of the heat conduction path from both the decorative material support portions 102 of the bracket 100 to both the side cover portions 42b of the decorative material 42 on the back surface 11b side is increased. Thereby, the amount of heat transferred by heat conduction from the bracket 100 on the back surface 11b side to the decorative material 42 on the back surface 11b side increases. Therefore, the temperature of the decorative material 42 on the back surface 11b side is likely to rise, and as a result, the radiant heat from the decorative material 42 on the back surface 11b side increases. Similarly, when a fire occurs in the back space, heat is easily transferred from the decorative material 42 on the back surface 11b side to the decorative material 42 on the front surface 11a side through the core material 11X, and the decorative material 42 on the front surface 11a side. Temperature rises easily. For this reason, the radiant heat of the decorative material 42 on the front surface 11a side increases.

  In this regard, as shown in FIG. 10, in the present embodiment, brackets 43 are attached to the upper end portion, the central portion, and the lower end portion of the core material 11 </ b> X in the height direction ZA, and the decorative material 42 is attached to the bracket 43. It is attached by screws 45. Further, the other side cover portion 42b in the width direction ZB of the decorative material 42 on the front surface 11a side is interposed via spacers 46 provided at the upper end portion, the center portion, and the lower end portion of the side surface in the width direction ZB of the core member 11X. It is attached to the core material 11X. Thereby, the contact and facing area between the decorative material 42 and the bracket 43 and the contact area between the bracket 43 and the core material 11X are smaller than those of the comparative heat-insulating structure TBC, that is, heat conduction from the decorative material 42 to the bracket 43. The size of the path and the size of heat conduction from the bracket 43 to the core material 11X are smaller than those of the comparative heat shield structure TBC. For this reason, for example, when the decorative material 42 on the front surface 11a side of the core material 11X is heated, the heat of the decorative material 42 on the front surface 11a side is not easily transmitted to the bracket 43 on the front surface 11a side, and the heat of the bracket 43 on the front surface 11a side. Becomes difficult to be transmitted to the front surface 11a of the core material 11X. Then, the heat of the back surface 11b of the core material 11X is hardly transmitted to the bracket 43 on the back surface 11b side, and the heat of the bracket 43 on the back surface 11b side is difficult to be transmitted to the decorative material 42 on the back surface 11b side. Therefore, the temperature of the decorative material 42 on the back surface 11b side hardly increases, and as a result, the radiant heat from the decorative material 42 on the back surface 11b side decreases. In addition, the core material extending in the height direction ZA such as the core material 21X of the door-end side vertical rod 21 other than the core material 11X of the neutral stand 11 and the core material extending in the width direction ZB such as the core material 23X of the upper collar 23 A similar effect occurs.

According to this embodiment, the following effects can be obtained.
(1) A portion where the decorative material 42 is in contact with the bracket 43 and the spacer 46 is provided in a part of the longitudinal direction (height direction ZA) of the decorative material 42. According to this configuration, compared to the comparative thermal insulation structure TBC in which the entire surface of the side cover portion 42b of the decorative material 42 and the decorative material support portion 102 of the bracket 100 are in contact with each other, Since the contact between the bracket 43 and the core material 11X and the facing area are reduced, the amount of heat transferred from the decorative material 42 to the core material 11X by heat conduction and radiation is reduced. Further, since the decorative material 42 and the core material 11X are not in direct contact with each other by the spacer 46, the amount of heat transferred by heat conduction from the decorative material 42 to the core material 11X is smaller than that of the comparative heat shield structure TBC. As a result, when a fire occurs on one of the front side and the back side of the fire door 1, heat transfer to the other decorative material 42 on the front side and the back side of the fire door 1 can be suppressed in the neutral 11. . Even when the decorative material 42 is attached in a state of facing the bracket 43 and the spacer 46, the facing area between the decorative material 42, the bracket 43, and the spacer 46 becomes small, so that the radiation from the decorative material 42 to the core material 11 </ b> X is performed. As a result, the amount of heat transferred is reduced and the same effect can be obtained. Similar effects can be obtained with respect to the second heat shield structure TB2 to the seventh heat shield structure TB7 and the ninth heat shield structure TB9.

  (2) A plurality of brackets 43 are provided apart from each other in the height direction ZA of the core material 11X. According to this configuration, the moment load applied to the bracket 43 is reduced as compared with the case where the bracket 43 is provided at one place, and as a result, the bracket 43 can be downsized. In other words, since the size of the heat conduction path can be reduced, the amount of heat transferred by heat conduction from the decorative material 42 to the bracket 43 can be reduced. As a result, when a fire occurs on one of the front side and the back side of the fire door 1, heat transfer to the other decorative material 42 on the front side and the back side of the fire door 1 can be suppressed in the neutral 11. . The same effect can be obtained for the second heat shield structure TB2 to the seventh heat shield structure TB7 and the ninth heat shield structure TB9.

  (3) In the first heat shield structure TB1 to the seventh heat shield structure TB7 and the ninth heat shield structure TB9, the decorative material 42 is attached to the bracket 43 by a screw 45 from the width direction ZB or the height direction ZA. Thereby, since the screw | thread 45 becomes invisible in the front view or back view of the fire door 1, the beauty | look of the fire door 1 can be improved.

(4) The spacer 46 is provided as a separate member from the core material 11X and the decorative material 42. According to this configuration, since an air layer is formed between the decorative material 42 and the spacer 46 and an air layer is formed between the spacer 46 and the core material 11X, the decorative material 42 and the core material 11X are directly connected to each other. As compared with the case of contact, the heat shielding effect can be improved.
The bracket 43 is provided as a separate member from the core material 11X and the decorative material 42. According to this configuration, an air layer is formed between the side cover portion 42b of the decorative material 42 and the decorative material support portion 43b of the bracket 43, and between the core material mounting portion 43a of the bracket 43 and the core material 11X. An air layer is formed. Therefore, compared with the case where the decorative material 42 and the core material 11X are in direct contact, the heat shielding effect can be improved. The same effect can be obtained from the second heat shield structure TB2 to the seventh heat shield structure TB7 and the ninth heat shield structure TB9.

  (5) The fire door 1 is provided with a first seal structure SL1 to a fifth seal structure SL5. According to this configuration, for example, a fire occurs on one of the front side and the back side of the fire door 1 and the foam material 32 expands, so that the front door space and the back space can be communicated with each other in the fire door 1. Is blocked. For this reason, it can suppress that the one hot air of the front side and back side of the fire door 1 flows into the other of the front side and back side of the fire door 1 and heats the cosmetic material 42 of the other side. . Therefore, when a fire occurs on one of the front side and the back side of the fire door 1, heat transfer to the other decorative material 42 on the front side and the back side of the fire door 1 can be suppressed.

(Modification)
The description about the said embodiment is an illustration of the form which the fire door according to this invention can take, and does not intend restrict | limiting the form. The fire door according to the present invention can take a form in which, for example, a modification of the embodiment shown below and at least two modifications not contradicting each other are combined.

  In addition, in description of the following modified examples, the core materials extending in the height direction ZA such as the central stand 11, the door end side vertical rod 21, and the door bottom side vertical rod 22 constituting the fire door 1 are referred to as “core material 50”. explain. Further, in the description of the following modified examples, the attachment portion is for attaching the decorative material 42 to the core material 50 by connecting the core material 50 and the side cover portion 42b of the decorative material 42.

(Modification 1)
In the above embodiment, a structure in which the spacer 60 is interposed between the decorative material 42 and the bracket 43 may be used, or a structure in which the spacer 60 is interposed between the bracket 43 and the core material 50 may be used. Good.

For example, as shown in FIG. 12A, the spacer 60 is provided between the decorative material support portion 43 b of the bracket 43 and the side cover portion 42 b of the decorative material 42. In the side view from the width direction ZB, the spacer 60 is formed in an annular shape in which an insertion hole 61 for inserting a screw 45 is formed, for example. The screw 45 is inserted into the insertion hole 42c of the side cover part 42b and the insertion hole 61 of the spacer 60 with the spacer 60 sandwiched between the decorative material support part 43b and the side cover part 42b. It is screwed into the mounting hole 43c. Thereby, the decorative material 42 is attached to the bracket 43.
The area of the spacer 60 is smaller than the area of the decorative material support portion 43b. For this reason, the contact area between the spacer 60 and the side cover part 42b and the contact area between the spacer 60 and the decorative material support part 43b are the values when the side cover part 42b and the decorative material support part 43b are in direct contact with each other. Smaller than the contact area. Thereby, the heat transfer amount transmitted by the heat conduction from the side cover portion 42b to the decorative material support portion 43b is reduced. Accordingly, the amount of heat transferred by the heat conduction from the decorative material 42 to the core material 50 is reduced. In addition, although the side cover part 42b and the decorative material support part 43b are facing in the vicinity, the amount of heat transfer due to radiation is small as compared with the case of direct contact. As a result, compared with the case where the side cover part 42b and the decorative material support part 43b are in direct contact with each other, when a fire occurs on one of the front side and the back side of the fire door 1, the front side of the fire door 1 and Heat transfer to the other decorative material 42 on the back side can be suppressed.

Further, for example, as shown in FIG. 12B, in a configuration in which the bracket 43 is attached to the core member 50 with screws 45 </ b> A, two spacers 60 are provided between the bracket 43 and the core member 50. A pair of insertion holes 43d for inserting the screws 45A are provided in the core member mounting portion 43a of the bracket 43. The core member 50 is provided with an attachment hole 51 into which the screw 45A is screwed. In a state where the two spacers 60 are sandwiched between the bracket 43 and the core member 50, the screw 45 </ b> A is inserted into the insertion hole 43 d of the core member attachment portion 43 a and the insertion hole 61 of the spacer 60 to enter the attachment hole 51 of the core member 50. The bracket 43 is attached to the core member 50 by being screwed.
The total area of the two spacers 60 is smaller than the area of the core attachment part 43a. For this reason, the contact area between the spacer 60 and the core material mounting portion 43a and the contact area between the spacer 60 and the core material 50 are larger than the contact area when the core material mounting portion 43a and the core material 50 are in direct contact. small. Thereby, the heat transfer amount transmitted by the heat conduction from the core material mounting portion 43a to the core material 50 is reduced. In addition, although the core material attaching part 43a and the core material 50 face each other in the vicinity, the amount of heat transfer due to radiation is small as compared with the case of direct contact. As a result, the front side and the back side of the fire door 1 when a fire occurs on one of the front side and the back side of the fire door 1 as compared with the case where the core mounting portion 43a and the core material 50 are in direct contact with each other. Heat transfer to the other decorative material 42 can be suppressed. Further, the spacer 60 may be formed in a plate shape extending in the width direction ZB and may be configured as one spacer having a pair of insertion holes 43d as long as it is smaller than the area of the core material attachment portion 43a.
In FIGS. 12A and 12B, the spacer 60 may be made of metal or resin, but is preferably made of resin from the viewpoint of reducing the amount of heat transfer. A plurality of spacers 60 may be stacked in the width direction ZB.
In FIGS. 12A and 12B, the bracket 100 of the comparative heat shield structure TBC may be attached to the core member 50 instead of the bracket 43. Also with this configuration, the bracket 100 and the decorative material 42 are not in direct contact with each other due to the spacer 60, and the bracket 100 and the core material 50 are not in direct contact with each other. Therefore, the structure shown in FIGS. The same effect can be obtained.

(Modification 2)
In the above-described embodiment, as a mounting portion, the structure in which the contact area between the decorative material 42 and the bracket 43 is reduced without providing the spacer 60 as in Modification 1, or the contact area between the decorative material 42 and the core material 50 is reduced. You may provide the structure to do. In addition, since it is the same as that of the modification 1 about radiation, the description is abbreviate | omitted.

  For example, as illustrated in FIG. 13A, the decorative material support portion 43 b of the bracket 43 is provided with a protruding portion 43 e that protrudes toward the side cover portion 42 b of the decorative material 42. A mounting hole 43c into which the screw 45 is screwed is formed in the protruding portion 43e. The screw 45 is inserted into the insertion hole 42c of the side cover portion 42b and screwed into the mounting hole 43c of the protruding portion 43e. Thereby, the decorative material 42 is attached to the core material 50. At this time, the protruding portion 43e contacts the side cover portion 42b on the contact surface 43f. Thereby, since the contact area of the bracket 43 and the decorative material 42 becomes small, the heat transfer amount transmitted by the heat conduction from the decorative material 42 to the bracket 43 decreases. As a result, when a fire occurs on one of the front side and the back side of the fire door 1, heat transfer to the other decorative material 42 on the front side and the back side of the fire door 1 can be suppressed. In addition, the bracket 43 and the decorative material 42 can be easily assembled as compared with the structure using the spacer 60 of the first modification.

  For example, as shown in FIG. 13B, the side cover portion 42 b of the decorative material 42 is provided with a protruding portion 42 d that protrudes toward the decorative material support portion 43 b of the bracket 43. An insertion hole 42c is formed in the protruding portion 42d. The screw 45 is inserted into the insertion hole 42c of the side cover portion 42b and screwed into the mounting hole 43c of the decorative material support portion 43b. Thereby, the decorative material 42 is attached to the bracket 43. At this time, the protrusion 42d contacts the decorative material support 43b on the contact surface 42e. Thereby, the effect similar to the structure of Fig.13 (a) is acquired.

Further, for example, as shown in FIG. 13C, in the structure in which the decorative material 42 is directly attached to the core material 50, the side cover portion of the decorative material 42 is provided on the side surface in the width direction ZB of the core material 50. A protruding portion 52 that protrudes toward 42b is provided. A mounting hole 51 into which the screw 45 is screwed is formed in the protruding portion 52. The screw 45 is inserted into the insertion hole 42c of the side cover portion 42b and screwed into the mounting hole 51 of the core member 50. Thereby, the decorative material 42 is attached to the core material 50. At this time, the protrusion part 52 contacts the side cover part 42b on the contact surface 52a. Thereby, since the contact area of the decorative material 42 and the core material 50 becomes small, the heat transfer amount transmitted by the heat conduction from the decorative material 42 to the core material 50 decreases. As a result, when a fire occurs on one of the front side and the back side of the fire door 1, heat transfer to the other decorative material 42 on the front side and the back side of the fire door 1 can be suppressed. In addition, the decorative material 42 and the core material 50 can be easily assembled as compared with the structure using the spacer 46 of FIG. Note that, in the structure in which the decorative material 42 is directly attached to the core member 50, the decorative material 42 may be provided with a protruding portion 42 d shown in FIG. 13B instead of the protruding portion 52.
13A to 13C, the bracket 100 of the comparative heat shield structure TBC may be attached to the core member 50 in place of the bracket 43.

(Modification 3)
In the above-described embodiment, a structure that reduces the contact area between the bracket 43 and the core member 50 without providing the spacer 60 as in Modification 1 may be provided as the attachment portion. In addition, since it is the same as that of the modification 1 about radiation, the description is abbreviate | omitted.

  For example, as shown in FIG. 14A, a pair of projecting portions 53 projecting toward the core material mounting portion 43 a of the bracket 43 is provided on the surface of the core material 50 in the front-rear direction ZC. A pair of protrusion part 53 contacts the core material attaching part 43a in the contact surface 53a. The bracket 43 is attached to the core member 50 by being fixed by, for example, spot welding at a contact portion between the contact surface 53a and the core member attachment portion 43a. As a result, the contact area between the bracket 43 and the core member 50 is reduced, and the amount of heat transferred by heat conduction from the bracket 43 to the core member 50 is reduced. For this reason, the heat transfer amount transmitted by the heat conduction from the decorative material 42 to the core material 50 is reduced. When a fire occurs on one of the front side and the back side of the fire door 1, heat transfer to the other decorative material 42 on the front side and the back side of the fire door 1 can be suppressed. In addition, the bracket 43 and the core member 50 can be easily assembled as compared to the structure using the spacer 60 of the first modification (see FIG. 12B). In addition, the number of the protrusion parts 53 can be set arbitrarily and may be one or more than three. The number of the protrusions 53 is not limited and is only influenced by the size.

For example, as illustrated in FIG. 14B, a protrusion 43 g that protrudes toward the core member 50 is provided at the center in the width direction ZB of the core member attachment portion 43 a of the bracket 43. The protrusion 43g contacts the core member 50 at the contact surface 43h. The bracket 43 is attached to the core member 50 by being fixed by, for example, spot welding at a contact portion between the contact surface 43 h and the core member 50. Thereby, the effect similar to the structure of Fig.14 (a) is acquired. In addition, the number of the protrusion parts 43g can be set arbitrarily and may be plural. There is no limitation in the number of the protrusion parts 43g, and it is only influenced by the size.
14A and 14B, the bracket 100 of the comparative heat shield structure TBC may be attached to the core member 50 in place of the bracket 43.

(Modification 4)
In the above-described embodiment, the number of heat conduction (or radiation) paths from the decorative material 42 to the core material 50 may be reduced. As an example thereof, as shown in FIGS. 15A to 15D, a structure is provided in which the attachment locations of the bracket 43 and the decorative material 42 are reduced as compared with the above embodiment.

As shown in FIG. 15A, the bracket 43 is attached to the center part and the lower end part in the height direction ZA of the core member 50, and the bracket 43 is not attached to the upper end part of the core member 50. For this reason, the decorative material 42 is attached to the bracket 43 at the center and the lower end in the height direction ZA.
As shown in FIG. 15B, the bracket 43 is attached to the center portion and the upper end portion in the height direction ZA of the core member 50, and the bracket 43 is not attached to the lower end portion of the core member 50. For this reason, the decorative material 42 is attached to the bracket 43 at the center portion and the upper end portion in the height direction ZA.
As shown in FIG. 15C, the bracket 43 is attached to the upper end portion and the lower end portion of the core member 50, and the bracket 43 is not attached to the center portion of the core member 50 in the height direction ZA. For this reason, the decorative material 42 is attached to the bracket 43 at the upper end portion and the lower end portion thereof.
As shown in FIG. 15D, the bracket 43 is attached to the center portion of the core member 50 in the height direction ZA, and the bracket 43 is not attached to the upper end portion and the lower end portion of the core member 50. For this reason, the decorative material 42 is attached to the bracket 43 at the center in the height direction ZA.
15A to 15D, the contact area between the bracket 43 and the decorative material 42 (or the area of the facing surface) is smaller than that of the above embodiment, and therefore the decorative material 42 to the bracket 43 The amount of heat transferred by heat conduction (or radiation) to the is reduced. For this reason, the amount of heat transferred by heat conduction (or radiation) from the decorative material 42 to the core material 50 is reduced. As a result, when a fire occurs on one of the front side and the back side of the fire door 1, heat transfer to the other decorative material 42 on the front side and the back side of the fire door 1 can be suppressed.
Further, although not shown, in the structure in which the decorative material 42 is directly attached to the core material 50, as in FIGS. 15 (a) to 15 (d), the number of attachment locations between the decorative material 42 and the core material 50 is reduced. Also good.

(Modification 5)
In the above embodiment, the attachment portion may have a structure in which the heat insulating material 70 is interposed between the decorative material 42 and the core material 50.

  For example, as shown in FIG. 16A, the heat insulating material 70 is sandwiched between the side cover portion 42 b of the decorative material 42 and the decorative material support portion 43 b of the bracket 43. As the heat insulating material 70, for example, a fiber heat insulating material such as glass wool is used. The heat insulating material 70 covers the entire surface of the decorative material support portion 43b that faces the side cover portion 42b. The heat insulating material 70 is provided with an insertion hole 71 for inserting the screw 45. The screw 45 is inserted into the insertion hole 42c of the side cover portion 42b of the decorative material 42 and the insertion hole 71 of the heat insulating material 70, and is screwed into the mounting hole 43c of the decorative material supporting portion 43b of the bracket 43. The decorative material 42 is attached to the bracket 43 in a state where the decorative material 42 is sandwiched between the decorative material 42 and the bracket 43. As a result, the contact area between the decorative material 42 and the bracket 43 is reduced as in the above embodiment, and heat transfer from the decorative material 42 to the bracket 43 is difficult due to the heat insulating material 70. The amount of heat transferred by heat conduction is further reduced. As a result, when a fire occurs on one of the front side and the back side of the fire door 1, heat transfer to the other decorative material 42 on the front side and the back side of the fire door 1 can be suppressed.

Further, for example, as shown in FIG. 16 (b), in the configuration in which the decorative material 42 and the core material 50 are directly attached by screws 45, the side cover portion 42 b of the decorative material 42 and the width direction of the core material 50. A heat insulating material 70 is sandwiched between the side surfaces of ZB. The heat insulating material 70 is the same size as the heat insulating material 70 of FIG. That is, the heat insulating material 70 is in partial contact with each of the core material 50 and the decorative material 42. The screw 45 is inserted into the insertion hole 42 c of the decorative material 42 and the insertion hole 71 of the heat insulating material 70 and screwed into the mounting hole 51 of the core material 50, thereby sandwiching the heat insulating material 70 between the decorative material 42 and the core material 50. In this state, the decorative material 42 is attached to the core material 50. Thereby, the same effect as the configuration of FIG. The size and shape of the heat insulating material 70 are not limited to the size and shape as shown in FIGS. 16A and 16B as long as they are partially in contact with the core material 50 and the decorative material 42, respectively.
In addition, the structure which interposed the heat insulating material 70 between the core material attaching part 43a of the bracket 43 and the core material 50 may be sufficient. Thereby, since it becomes difficult to transfer heat from the bracket 43 to the core member 50, deformation of the core member 50 due to heat can be suppressed. Moreover, it replaces with the heat insulating material 70 and a fireproof board may be used. The refractory plate is formed of, for example, a calcium silicate plate or gypsum.

(Modification 6)
In the said embodiment, you may provide the structure where the path | route of the heat conduction from the decorative material 42 to the core material 50 becomes long.

  For example, as shown in FIG. 17 (a), the bracket 43 has a core material attachment portion 43a from a contact portion 43i that contacts the side cover portion 42b (see FIG. 16) of the decorative material 42 in the decorative material support portion 43b. An extension 43j that increases the distance to the The extension 43j extends in the height direction ZA while being bent downward from the contact portion 43i, and then extends in the height direction ZA while being bent upward and continues to the decorative material support portion 43b. An attachment hole 43c into which the screw 45 (see FIG. 16) is screwed is formed in the contact portion 43i. Thereby, the heat transfer amount transmitted by the heat conduction from the bracket 43 to the core member 50 is reduced. For this reason, the heat transfer amount transmitted by the heat conduction from the decorative material 42 to the core material 50 is reduced. As a result, when a fire occurs on one of the front side and the back side of the fire door 1, heat transfer to the other decorative material 42 on the front side and the back side of the fire door 1 can be suppressed.

  Also, for example, as shown in FIG. 17B, the extension 43j extends in the width direction ZB while being bent inward in the width direction ZB from the core member attachment portion 43a, and then on the outside of the width direction ZB. The structure extends in the width direction ZB while being bent toward the contact portion 43i. Thereby, the same effect as that of the structure of FIG. Note that the shape of the extension 43j is limited to the shape shown in FIGS. 17A and 17B as long as the heat conduction path between the core attachment portion 43a and the contact portion 43i can be extended. Not.

(Modification 7)
In the said embodiment, you may change the material of the bracket 43 like following (A) and (B).

  (A) The bracket 43 is formed of a heat insulating material. According to this configuration, it is difficult to transfer heat from the decorative material 42 to the core material 50 via the bracket 43. As a result, since the amount of heat transferred by heat conduction from the decorative material 42 to the core material 50 is reduced, when the fire occurs on one of the front side and the back side of the fire door 1, Heat transfer to the other decorative material 42 on the back side can be suppressed.

  (B) The bracket 43 is formed of a resin material. According to this configuration, since a resin material having a lower heat transfer coefficient than that of the metal material is used, the amount of heat transferred by heat conduction from the bracket 43 to the core member 50 is reduced. In addition, the resin material melts as the temperature of the bracket 43 rises, whereby the decorative material 42 and the core material 50 are brought into a non-contact state. Accordingly, heat insulation from the air layer between the decorative material 42 and the core material 50 makes it difficult to transfer heat from the decorative material 42 to the core material 50. As described above, the amount of heat transferred by the heat conduction from the decorative material 42 to the core material 50 is reduced, so that when a fire occurs on one of the front side and the back side of the fire door 1, the front side of the fire door 1 and Heat transfer to the other decorative material 42 on the back side can be suppressed.

(Modification 8)
In the embodiment and the modified example described above, one of the pair of side cover portions 42b of the decorative material 42 may be omitted. In this case, the decorative material 42 is attached to the core material (core material 11X, 50, etc.) by connecting one side cover portion 42b of the decorative material 42 and the attachment portion (the bracket 43 or the spacers 46, 60). .

(Modification 9)
In the first to eighth modifications, as shown in FIGS. 12 to 17, the core member 50 is illustrated as extending in the height direction ZA, but extends in the width direction ZB such as the upper rod 23 and the lower rod 24. The first to eighth modifications can be applied to the core material.

(Modification 10)
In the sixth heat shield structure TB6, the configuration of the fireproof plate 41 disposed on the back side of the core member 27X of the transverse member 27 is changed to the configuration of the fireproof plate 41 as shown in FIGS. Also good.

As shown in FIG. 18A, the refractory plate 41 may be configured such that the thickness in the front-rear direction ZC increases as it goes upward.
As shown in FIG. 18 (b), the upper end portion of the rear refractory plate 41 may be formed in an L shape protruding in the front-rear direction ZC.
As shown in FIG. 18C, a plurality of refractory plates 41 having different lengths in the height direction ZA are stacked in the front-rear direction ZC so that the thickness of the front-rear direction ZC increases as the refractory plate 41 moves upward. May be.
In short, the fireproof plate 41 disposed on the back side of the core member 27X of the transverse member 27 may be configured so that the upper fireproof performance is improved as compared with the lower portion of the core member 27X.

(Modification 11)
In the said embodiment, you may abbreviate | omit the vertical member 26, the horizontal member 27, the hinge 28, and the door closer from the sliding doors 20R and 20L. That is, the sliding doors 20R and 20L may omit the hinged door structure that allows the sliding doors 20R and 20L to pass by rotating in the fully closed state.

(Modification 12)
In the said embodiment, although the fire prevention equipment was actualized as the fire door 1, the fire prevention equipment is not restricted to a fire door, For example, a fire prevention window may be sufficient.

1 ... Fire door (fire prevention equipment)
2 ... Opening 11X ... Neutral core material 12X ... Core material of baseboard 21X ... Core material of doorside side vertical rod 22X ... Core material of door bottom side vertical rod 23X ... Core material of upper collar 26X ... Core of vertical member Material 27X ... Core material of horizontal member 24X ... Core material of lower arm 42 ... Cosmetic material 43 ... Bracket (mounting part)
45 ... Screw (Mounting member, mounting part)
46 ... Spacer (Mounting part)
50 ... Core material 70 ... Heat insulation ZB ... Width direction

Claims (4)

A core material that is a component of the frame of the fire prevention equipment;
A decorative material attached to the core;
A fire prevention facility provided with a mounting portion that is provided in a part of the core material in the longitudinal direction and attaches the decorative material to the core material. The fireproof equipment according to claim 1, wherein a plurality of the attachment portions are provided apart from each other in the longitudinal direction of the core member. The fireproof equipment according to claim 1, wherein the attachment portion interposes a heat insulating material between the core material and the decorative material. The fireproof equipment according to any one of claims 1 to 3, wherein the attachment portion fixes the decorative material by an attachment member from a width direction of an opening in which the fireproof equipment is provided.

Images