WO2017188241A1

WO2017188241A1 - Fire prevention equipment

Info

Publication number: WO2017188241A1
Application number: PCT/JP2017/016361
Authority: WO
Inventors: 康則四國; 伸二長津; 理美小谷
Original assignee: ナブテスコ株式会社
Priority date: 2016-04-25
Filing date: 2017-04-25
Publication date: 2017-11-02
Also published as: JP6675925B2; CN109072664A; JP2017197920A; HK1257913A1

Abstract

A fireproof door comprises: a core member 50 which is a structural member of the frame of the fireproof door; a decorative member 42 that is attached to the core member 50; brackets 43 that attach to the core member 50 and are for attaching the decorative member 42 to the core member 50; and an attachment structure that attaches the decorative member 42 to the core member 50 so as to allow the decorative member 42 to be displaced with respect to the core member 50 as a result of thermal deformation of the decorative member 42 during a fire. The attachment structure secures the decorative member 42 to the brackets 43, which are attached to the top edge, center and bottom edge of the core member 50, using screws 45.

Description

Fire prevention equipment

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

Conventionally, fire doors are known as fire prevention equipment installed in commercial facilities and hospital buildings. The fire door described in Patent Literature 1 includes a pair of fixed walls having a vertical frame and a hinged door that opens and closes an entrance between the pair of fixed walls. Each of the front side and the back side of the vertical frame is provided with a heat shielding structure that suppresses heat transfer to the other when one of the front side and the back side of the vertical frame is heated. This heat-insulating structure includes an attachment frame body that is a core material of a vertical frame, a fireproof plate that is fixed to the attachment frame body via screws, and a decorative material that is fixed to the attachment frame body via screws.

JP-A-5-125875

By the way, the decorative material is thermally deformed when it is heated by being exposed to a flame on the front side or the back side of the fire door. There is a case where the core material is deformed by the force due to the thermal deformation of the decorative material acting via screws. In particular, when the decorative material is fixed with a large number of screws, a greater force acts on the core material, and therefore the core material is more easily deformed. Such problems are generally common in fire doors, fire windows and other fire protection equipment. Since deformation of the core material may cause problems, improvement thereof is desired.

One embodiment of the present invention has been made in view of such problems, and one of its purposes is to provide a fire prevention facility capable of suppressing deformation of the core material accompanying thermal deformation of the decorative material.

[1] A fire prevention equipment according to one aspect of the present invention includes a core material that is a constituent member of a frame of the fire prevention equipment, a decorative material attached to the core material, and an attachment structure for attaching the decorative material to the core material. The mounting structure allows displacement of the decorative material relative to the core material when the decorative material is thermally deformed.

Therefore, even if the decorative material is thermally deformed in the event of a fire, the influence of the deformation on the core material is suppressed. Thereby, the deformation | transformation of the core material accompanying the heat deformation of a decorative material can be suppressed.

The front view of the fire door of embodiment. Sectional drawing of the fire door cut | disconnected by the AA line of FIG. FIG. 3 is an enlarged view of the door bottom of one sliding door of FIG. 2 and its periphery. The disassembled perspective view of the neutral of embodiment. The disassembled perspective view of the neutral example of a reference example. Sectional drawing of the fire door cut | disconnected by the BB line of FIG. Sectional drawing of the fire door cut | disconnected by CC line of FIG. (A) is a cross-sectional view of the lower armor showing the lower arm of the embodiment together with the peripheral structure, (b) is a cross-sectional view of the base wood showing the baseboard of the embodiment together with the peripheral structure. (A) is a disassembled perspective view of the fire door of the modification 1, (b) is the side view. The exploded perspective view of another fire door of the modification 1. FIG. The exploded perspective view of the fire door of the modification 2. FIG. (A) is a disassembled perspective view of the fire door of the modification 3, (b) is the front view. (A) is sectional drawing before a cosmetic material is thermally deformed by the fire door of the modification 4, (b) is sectional drawing after a cosmetic material is thermally deformed. The exploded perspective view of the fire door of the modification 5. FIG. The exploded perspective view of the fire door of the modification 6. FIG. (A) is a perspective view of the fire door of the modification 7, (b) is another perspective view, (c) is still another perspective view. (A) is a perspective view of the fire door of the modification 7, (b) is another perspective view. (A) is a schematic side view of the fire door of the modification 8, (b) is another schematic side view. (A) is a schematic side view of the fire door of the modification 9, (b) is another schematic side view. (A) is a schematic side view of the fire door of the modification 10, (b) is another schematic side view, (c) is still another schematic side view. The side view of another fire door of the modification 10. FIG. The schematic side view of the fire door of the modification 11. FIG. The exploded perspective view of another fire door of the modification 11. FIG. FIG. 16 is an exploded perspective view of still another fire door according to Modification 11. The exploded perspective view of the fire door of the modification 12. FIG. The exploded perspective view of the fire door of the modification 13. FIG.

An outline of the fire prevention equipment according to one embodiment of the present invention will be described.
[2] In one form of fire prevention equipment, the attachment structure is configured to displace the decorative material in a direction orthogonal to the longitudinal direction of the decorative material while suppressing displacement of the decorative material in the longitudinal direction of the decorative material. It may be provided to allow
Thus, when the decorative material is about to be thermally deformed, displacement in the direction orthogonal to the longitudinal direction is allowed while suppressing displacement of the decorative material in the longitudinal direction. Therefore, deformation of the core material due to thermal deformation of the decorative material can be suppressed without providing a space where the decorative material can enter in the longitudinal direction of the decorative material.

[3] In one form of fire prevention equipment, the attachment structure may fix the decorative material by attachment members at a plurality of locations selected from three locations, an upper portion, a central portion, and a lower portion of the core member.
As a result, the number of fixing points between the decorative material and the core material by the mounting member (for example, screws) is smaller than in the past, and therefore the decorative material is easily thermally deformed so as to be separated from the core material. Therefore, the deformation of the core material accompanying the thermal deformation of the decorative material can be suppressed with a simple configuration.

[4] In one form of fire prevention equipment, the attachment structure includes a bracket for attaching the decorative material to the core material, and the bracket is deformed in a longitudinal direction of the decorative material in accordance with thermal deformation of the decorative material. It is possible, and the mounting member may fix the decorative material and the core material in the bracket.
Thereby, a deformation | transformation of the core material accompanying the thermal deformation of a decorative material can further be suppressed because a bracket deform | transforms with a thermal deformation of a decorative material.

[5] In one form of fire prevention equipment, the mounting structure allows displacement of the decorative material in the longitudinal direction while suppressing displacement of the decorative material in a direction orthogonal to the longitudinal direction of the decorative material. It may be provided as follows.
Thereby, the deformation | transformation of the core material accompanying the heat deformation of a makeup | decoration material can be suppressed, suppressing generation | occurrence | production of the gap | interval orthogonal to the longitudinal direction of a makeup | decoration material produced between a makeup | decoration material and a core material.

[6] In one form of fire prevention equipment, the decorative material can be accommodated in another component of the fire prevention equipment on the side where the displacement of the decorative material is allowed by the mounting structure in the longitudinal direction of the decorative material. An accommodating part may be formed.
Thereby, when the decorative material is thermally deformed, the decorative material is accommodated in the accommodating portion by moving in the longitudinal direction. Therefore, it is possible to suppress deformation of the core material due to thermal deformation of the decorative material with a simple configuration while suppressing generation of a gap in a direction orthogonal to the longitudinal direction of the decorative material. Here, the “movement” of the decorative material includes a movement caused by extension of the decorative material in the longitudinal direction.

[7] In one form of fire prevention equipment, the attachment structure includes a bracket for attaching the decorative material to the core material, and the bracket extends in a longitudinal direction of the decorative material when the decorative material is thermally deformed. It is good also as a movable structure.
Thereby, a deformation | transformation of the core material accompanying the thermal deformation of a decorative material can be suppressed by a bracket moving to the longitudinal direction of a decorative material with the thermal deformation of a decorative material. Here, the “movement” of the bracket includes movement due to the deformation.

[8] In one form of fire prevention equipment, a fireproof plate disposed between the core material and the decorative material may be provided.
As a result, when the decorative material is heated in the event of a fire, the temperature difference between the core material and the decorative material increases due to the influence of the fireproof plate, and the relative displacement of the decorative material relative to the core material increases due to thermal deformation of the decorative material. Become. Even in this case, the above-described mounting structure can effectively suppress deformation of the core material due to thermal deformation of the decorative material.

Hereinafter, an embodiment in which fire prevention equipment is embodied as a fire door will be described with reference to the drawings. The fire door 1 of this embodiment is a draw-type fire door as shown in FIG. In the following description of the fire door 1, when directions are indicated, the respective directions when the fire door 1 of FIG. “FS” in FIG. 2 and the like means the front side (Front side), and “BS” means the back side (Back Side).

A rectangular opening 2 is formed in the building (including the interior). The fire door 1 is disposed above the pair of vertical frames 3 with a pair of vertical frames 3 arranged at intervals in the longitudinal direction of the opening 2 of the building (including the interior) and supported by the pair of vertical frames 3. The invisible eye 4 is provided. 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 4a is formed inside the mesh 4.

Between the pair of vertical frames 3, the fixed wall 10 R is attached to the right vertical frame 3 and the fixed wall 10 L is attached to the left vertical frame 3 in front view of the fire door 1. An entrance / exit is formed between the

fixed walls

10R and 10L. Between the fixed

walls

10R and 10L, a pair of sliding

doors

20R and 20L capable of opening and closing the entrance is disposed. As shown in FIG. 2, the sliding

doors

20R and 20L are arranged on the front side in the front-rear direction ZC of the fire door 1 (the normal direction of the door surface of the fire door 1) with respect to the fixed

walls

10R and 10L. In the following description, for example, even if they are separate members such as the vertical frame 3, the members arranged in pairs may be given the same reference for convenience of description.

The fixed

walls

10R and 10L are provided with 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, a baseboard 12 extending from the neutral stand 11 toward the vertical frame 3 is provided at the lower end portion of the neutral stand 11. The baseboard 12 extends in the left-right direction ZB, which is the opening / closing direction of the sliding

doors

20R, 20L. The fixed walls 10 R and 10 L include a frame configured by the vertical frame 3, the neutral stand 11, the seamless 4, and the baseboard 12. A heat resistant glass 13 is disposed in the frame. The heat-resistant glass 13 is supported by the vertical frame 3, the neutral plate 11, the mesh 4, and the baseboard 12. The neutral stand 11 and the baseboard 12 are formed in a hollow column shape by bending a stainless steel plate.

As shown in FIG. 1, the sliding

doors

20R and 20L include a door body 20X serving as a hinged door and a door support frame 20Y that rotatably supports the door body 20X. The door body 20X includes a frame body and a heat-resistant glass 25 disposed in the frame body. The frame body includes a door-end side fence 21 constituting a door tip, a door-end side fence 22 constituting a door bottom, an upper fence 23 constituting an upper end portion of the sliding

doors

20R, 20L, and a sliding

door

20R, 20L. And a lower collar 24 that constitutes the lower end portion. 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 left-right direction ZB. The heat-resistant glass 25 is supported by a door-end side fence 21, a door-end side fence 22, an upper fence 23, and a lower fence 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 left-right direction ZB. The vertical member 26 is disposed so as to extend in the height direction ZA and to be adjacent to the door butt side vertical rod 22 in the left-right direction ZB. The lateral member 27 is disposed above and adjacent to the upper collar 23. The horizontal 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. The sliding

doors

20R and 20L are supported so as to be slidable in the left-right direction ZB with respect to the invisible eye 4 via a door hanger.

The sliding

doors

20R and 20L are driven so as to approach and separate from each other in the left-right direction ZB by a driving unit (not shown) disposed in the seamless accommodation space 4a. Thereby, the entrance / exit between fixed

wall

10R, 10L is opened and closed. *

The door end side vertical rod 21, the door bottom side vertical rod 22, the upper rod 23, the lower rod 24, the vertical member 26 and the horizontal member 27 are formed in a hollow column shape by bending a stainless steel plate. In addition, these may be comprised by steel materials (for example, iron and refractory steel) other than a stainless steel plate.

As shown in FIG. 3, the fire door 1 is prevented from transferring heat to the other of the front side space and the back side space when a fire occurs in one of the front side space and the back side space of the fire door 1. A heat shield structure is provided. The heat shield structure is provided on the frame of the fire door 1. Here, the frame includes the seamless 4, the neutral 11, the baseboard 12, the door-end side vertical rod 21, the door-end side vertical rod 22, the upper rod 23, the lower rod 24, the vertical member 26, the horizontal member 27 and the like. Say. As an example of this, a heat shield structure TB provided in the neutral 11 will be described. *

Refer to FIG. The frame includes a core member 50 that is a constituent member of the frame. The core material 50 is a long body that is long in one direction. The core material 50 of this example has the height direction ZA as the longitudinal direction. The core material 50 is comprised with metals including steel materials, such as stainless steel. The core member 50 forms at least a part of a space that accommodates the side portion of the heat-resistant glass 25.

The heat shield structure TB of the present embodiment is provided on the front side and the back side of the core member 50. The heat shielding structure TB includes a fireproof plate 41 disposed on the front side and the back side of the core member 50, a decorative material 42 covering each of the front side fireproof plate 41 and the rear side fireproof plate 41, and a decorative material 42. A bracket 43 for attaching to the core member 50 is provided. *

The refractory plate 41 is a plate-like member in which the height direction ZA is a longitudinal direction and the left-right direction ZB is a short direction. The refractory plate 41 is approximately equal to the length of the core member 50 in the longitudinal direction (height direction ZA). The fireproof plate 41 is disposed between the core material 50 and the decorative material 42. The refractory plate 41 is disposed so as to cover the core member 50 from one side in the front-rear direction ZC.

Refractory plate 41 is made of a material having excellent heat insulation in addition to fire resistance. In this embodiment, the refractory plate 41 is a calcium silicate plate, but is not limited thereto, and may be a gypsum board. In the present embodiment, the number of front side fireproof plates 41 is smaller than the number of rear side fireproof plates 41, but the number is not particularly limited.

As shown in FIG. 3, the fireproof plate 41 on the front side is fixed to the core member 50 by a plurality of screws 44. The rear side refractory plate 41 is laminated in the front-rear direction ZC and is fixed to the core member 50 by a plurality of screws 44. The plurality of screws 44 are screwed into the refractory plate 41 and the core member 50 at positions spaced in the height direction ZA.

The decorative material 42 is a long body that is long in the same direction as the longitudinal direction (height direction ZA) of the core material 50. Hereinafter, the longitudinal direction of the decorative material 42 is referred to as “longitudinal direction ZA”, and a direction (left-right direction ZB) orthogonal to the longitudinal direction of the decorative material 42 as viewed from the front-rear direction ZC is also referred to as a width direction ZB. The decorative material 42 is formed by bending a stainless steel plate. The decorative material 42 includes a cover 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 pair of side cover portions that cover the entire surface in the left-right direction ZB of the fireproof plate 41 from both sides in the left-right direction ZB. 42b. An insertion hole 42c that penetrates the side cover portion 42b in the left-right direction ZB is provided in each of the upper end portion, the center portion, and the lower end portion of the side cover portion 42b.

In the decorative material 42 on the front side, one side cover portion 42 b is attached to the core member 50, and the other side cover portion 42 b is attached to the bracket 43. Accordingly, the length of one side cover part 42b in the front-rear direction ZC is longer than the length of the other side cover part 42b in the front-rear direction ZC. Further, the length in the front-rear direction ZC of the side cover portion 42b (the other side cover portion 42b) of the decorative material 42 on the front surface 11a side is longer than the length of the side cover portion 42b of the decorative material 42 on the back surface 11b side. short. This is because the number of front side fireproof plates 41 is smaller than the number of rear side fireproof plates 41.

The bracket 43 is disposed on each of the front side and the back side of the core member 50. Three brackets 43 according to the present embodiment are arranged on the front side and the back side of the core member 50 at intervals in the longitudinal direction ZA of the core member 50. The three brackets 43 are attached to the upper end portion, the center portion, and the lower end portion of the core member 50. These brackets 43 are attached to the front surface 11a and the back surface 11b of the core member 50 by, for example, spot welding.

The front bracket 43 is a common part, and the rear bracket 43 is a common part. Each bracket 43 is formed by bending a stainless steel plate using press molding or the like. The bracket 43 is made of a metal such as stainless steel. The material of the bracket 43 is set so that the strength is weaker than that of the core material 50.

The bracket 43 includes a long plate-shaped core material attaching portion 43a extending in the left-right direction ZB, and a pair of decorative material support portions 43b extending in the front-rear direction ZC on both sides of the core material attaching portion 43a in the left-right direction ZB. A fireproof plate 41 is disposed between the pair of decorative material support portions 43b. The core material attaching portion 43 a is sandwiched between the core material 50 and the fireproof plate 41.

The length in the front-rear direction ZC of the decorative material support portion 43b in the front bracket 43 is shorter than the length in the front-rear direction ZC of the decorative material support portion 43b in the bracket 43 on the rear side. This is because the number of front side fireproof plates 41 is smaller than the number of rear side fireproof plates 41. *

Here, the decorative material 42 is attached to the bracket 43 with a plurality of screws 45. The screw 45 is an example of an attachment member that fixes the decorative material 42 to the core material 50. As for the decorative material 42 of this embodiment, each of the upper end part, the center part, and the lower end part is attached to the bracket 43 by the screw 45.

Referring to the front facing cosmetic material 42. One side cover portion 42b covers the front side portion of the core member 50 from one side in the left-right direction ZB (hereinafter referred to as the left side for convenience). The other side cover part 42b covers the decorative material support part 43b of the bracket 43 from the other side in the left-right direction ZB (hereinafter referred to as the right side for convenience). A part of the screws 45 is inserted into the insertion hole 42 c on the left side of the decorative material 42 and screwed into the mounting hole 11 c provided on the left side surface of the core member 50. The attachment hole 11 c is formed in the spacer 46 provided on the side surface of the core member 50. The left end portion of the front side decorative material 42 is attached to the core member 50 via the spacer 46. The other screw 45 is inserted into the insertion hole 42 c on the right side of the decorative material 42 and screwed into the mounting hole 43 c of the decorative material support portion 43 b of the bracket 43. The right end portion of the front side decorative material 42 is attached to the right end portion of the bracket 43. Thereby, the decorative material 42 is attached to the bracket 43. The decorative material 42 is attached to the bracket 43 from the width direction (left-right direction ZB) of the core material 50 with screws 45. A shaft portion of the screw 45 is arranged along the width direction of the core member 50. The attachment holes 11c and 43c are screw holes for screwing with the screws 45.

Referring to the decorative material 42 on the back side. The pair of side cover portions 42b covers the decorative material support portion 43b of the bracket 43 from the left-right direction ZB. The screw 45 is inserted into the insertion hole 42 c of the decorative material 42 and screwed into the mounting hole 43 c of the decorative material support portion 43 b of the bracket 43. Thereby, the decorative material 42 is attached to the bracket 43. The decorative material 42 on the back side is not directly attached to the core member 50 but is attached to the core member 50 via the bracket 43. In addition, the decorative material 42 on the back side is arranged with a space in the fireproof plate 41 and the front-rear direction ZC.

The heat shield structure TB includes an attachment structure for attaching the decorative material 42 to the core material 50 so as to allow the decorative material 42 to be displaced relative to the core material 50 when the decorative material 42 is thermally deformed in the event of a fire. The attachment structure means of this embodiment suppresses the displacement of the decorative material 42 in the longitudinal direction ZA of the decorative material 42 and displaces the decorative material 42 in the direction orthogonal to the longitudinal direction of the decorative material 42 (front-rear direction ZC). Is provided to allow

The attachment structure of the present embodiment is a structure in which the decorative material 42 is fixed to the core material 50 with screws 45 (attachment members) at the upper end portion, the central portion, and the lower end portion of the core material 50. From another point of view, the mounting structure of the present embodiment is such that the decorative material 42 is fixed by screws 45 only at a plurality of locations selected from the three locations of the upper end portion, the central portion, and the lower end portion of the core member 50, and the core The decorative material 42 is not fixed to other portions of the material 50. This “other place” means a place other than the place where the decorative material 42 is fixed by the screw 45 to the core member 50. Here, “fixing” includes both the case where the decorative material 42 is attached to the core member 50 via the bracket 43 by the screw 45 and the case where the decorative material 42 is attached directly to the core member 50. The mounting structure can also be understood as fixing the decorative material 42 to the core material 50 by the screw 45 and the bracket 43.

The operation of this embodiment will be described. Hereinafter, description will be made based on a comparison between the heat shield structure TB shown in FIG. 4 and the heat shield structure of the reference example shown in FIG. 5 (hereinafter referred to as “reference heat shield structure TBC”).

The reference heat shield structure TBC has a configuration in which one bracket 43X is attached to the front side of the core member 50, and the decorative material 42 is attached to the bracket 43X and the core member 50 by a large number of screws 45. The reference heat shield structure TBC has a configuration in which one bracket 43X is attached to the back side of the core member 50, and the decorative material 42 is attached to the bracket 43X by a number of screws 45. The bracket 43X of the reference heat-insulating structure TBC has a core material attachment portion 43a having the same length in the longitudinal direction ZA as the core material 50, and a cosmetic material support extending in the front-rear direction ZC from both sides in the left-right direction ZB of the core material attachment portion 43a. Part 43b. A large number (10) of attachment holes 43c of the decorative material support portion 43b are provided at intervals in the height direction ZA.

In the reference heat shielding structure TBC, for example, when a fire occurs on the front side of the core member 50, the front side decorative material 42 is heated. On the other hand, the decorative material 42 on the back side does not increase in temperature due to the reference heat-shielding structure TBC, and is generally in a normal temperature state. Therefore, the front-side decorative material 42 is thermally deformed, and the back-side decorative material 42 is not thermally deformed.

Since each screw 45 inhibits the thermal deformation of the decorative material 42 on the front side, a force generated by the thermal deformation of the decorative material 42 acts on each screw 45. For this reason, a force pulling upward or downward via the screws 45 is applied to each bracket 43X on the front side. The force applied to the bracket 43X acts on the front surface 11a of the core member 50 via the core member attachment portion 43a. As a result, the core member 50 is deformed into a curved shape that is convex toward the front side together with the front-side decorative material 42. Thereby, a clearance gap is formed between the core material 50 of one frame and the heat-resistant glass 13, or between another frame adjacent to the one frame. The “one frame” in this example is the neutral 11, and the “other frame” is the vertical member 26. In connection with this, there exists a possibility of causing the malfunction of the front side space and the back side space communicating. The same applies when a fire occurs on the back side of the core member 50. In this case, the core member 50 is deformed into a curved shape that is convex toward the back side together with the decorative material 42 on the back side.

In that regard, as shown in FIG. 4, in the mounting structure of the present embodiment, the bracket 43 is attached to each of the upper end portion, the center portion, and the lower end portion of the core member 50, and the decorative material 42 is attached to the bracket 43 by screws 45. It is attached. That is, the number of places where the decorative material 42 and the bracket 43 are fixed by the screws 45 is smaller than that of the comparative heat shield structure TBC. It can be said that there are few fixed portions of the decorative material 42 by the screws 45 to the core material 50.

For example, let us consider a case where the front decorative material 42 is heated. In this case, the portion between the screws 45 adjacent to each other in the longitudinal direction ZA in the decorative material 42 is separated from the core material 50 in the front-rear direction ZC (direction perpendicular to the longitudinal direction of the decorative material 42) with the screw 45 as a fulcrum. Deform. The front-rear direction ZC is also the normal direction of the surface of the cover body 42a of the decorative material 42. Therefore, the portion where the thermal deformation of the decorative material 42 is inhibited by each screw 45 is limited as compared with the configuration of the reference heat shielding structure TBC and the configuration of Patent Document 1. The configuration of Patent Document 1 refers to a structure in which a decorative material is fixed to a mounting frame body serving as a core material through a large number of screws. Thereby, it is possible to suppress a large force accompanying the thermal deformation of the decorative material 42 from acting on the core material 50 through the screws 45 and the brackets 43. Therefore, the deformation of the core member 50 due to the thermal deformation of the decorative material 42 on the front side can be suppressed. In addition, even when the back side decorative material 42 is heated, similarly, the deformation of the core material 50 due to the thermal deformation of the back side decorative material 42 can be suppressed.

According to the present embodiment, the following effects can be obtained.
(1) The mounting structure is provided so as to allow displacement of the decorative material 42 in a direction orthogonal to the longitudinal direction of the decorative material 42 while suppressing the displacement of the decorative material 42 in the longitudinal direction of the decorative material 42. Thereby, compared with the structure of reference thermal-insulation structure TBC and patent document 1, it is suppressed that the big force accompanying the thermal deformation of the decorative material 42 acts on the core material 50. FIG. Therefore, the deformation of the core member 50 can be suppressed, and the occurrence of problems associated with the deformation can be prevented. The problem in this example is that the front side space and the back side space communicate with each other through a gap formed in a part of the fire door 1 as the core member 50 is deformed. As a result, even if the decorative material 42 is thermally deformed, the leakage of a flame or the like can be suppressed outside the fire prevention compartment.

Further, in order to prevent deformation of the core material 50 due to thermal deformation of the decorative material 42, a means for increasing the strength of the core material 50 is also conceivable. According to the present embodiment, deformation of the core material 50 can be suppressed without increasing the strength of the core material 50. Therefore, the increase in size and cost associated with the increase in strength of the core material 50 can be prevented.

(2) The decorative material 42 is attached to the bracket 43 whose strength is weaker than that of the core material 50. Therefore, the bracket 43 is easily deformed before the core material 50 due to the thermal deformation of the decorative material 42. For this reason, it can further suppress that the force by the thermal deformation of the decorative material 42 acts on the core material 50.

(3) The decorative material 42 is attached to the bracket 43 from the width direction ZB of the decorative material 42 with screws 45. Thereby, the screw 45 is not visible in the front view or the rear view of the fire door 1, so that the beauty of the fire door 1 is improved.

In the above, the example in which the heat shield structure TB is used for the neutral 11 has been described. Next, other portions where the heat shield structure TB of the embodiment is used will be described with reference to the drawings. Here, the same components as those described above are simply denoted by the same reference numerals, and redundant description is omitted. FIG. 3 shows an example in which the heat shield structure TB is used for the door butt side vertical rod 22 and the vertical member 26 in addition to the neutral 11. FIG. 6 shows an example in which the heat shield structure TB is used for the door-end side vertical gutter 21. FIG. 7 shows an example in which the heat shield structure TB is used for the upper collar 23 and the lateral member 27. FIG. 8A and FIG. 8B show an example in which the heat shield structure TB is used for the baseboard 12 and the lower arm 24. In any of the heat shielding structures TB, a structure in which the decorative material 42 is fixed to the core material 50 using the bracket 43 is used. In addition to this, for example, a similar heat shield structure TB may be used for the seamless 4.

In addition, between the adjacent frames of the fire door 1, a communication path that connects the front side space and the back side space is provided. The fire door 1 is provided between adjacent frames and includes a seal structure SL that blocks the communication path. As an example of this, FIG. 3 shows a seal structure SL between the vertical member 26 and the neutral 11. The seal structure SL includes an airtight member 33 that closes the communication path between adjacent frames during a normal period when fire does not occur (hereinafter simply referred to as “normal period”). In this example, the airtight member 33 closes the communication path formed in the smoke return 31 between the vertical member 26 and the neutral member 11. The airtight member 33 can block the flow of smoke between the front side space and the back side space of the fire door 1 even when a fire occurs.

The seal structure SL includes a foam material 32 that expands when the temperature rises above a predetermined temperature. The foamed material 32 expands so as to fill the communication path between adjacent frames by being heated with the occurrence of a fire. Thereby, the foaming material 32 interrupts | blocks the distribution | circulation of the smoke and a hot air between the front side space and the back side space of the fire door 1 at the time of a fire outbreak.

In addition to the space between the vertical member 26 and the neutral member 11, the seal structure may be, for example, between the door bottom side vertical rod 22 and the vertical member 26, between the door side vertical rods 21 of the adjacent sliding doors 20 R, 20 L It is provided between the collar 23 and the transverse member 27 and between the mesh 4 and the transverse member 27.

(Modification)
Embodiment is an illustration of the form which the fire door of this invention can take, and it does not intend restrict | limiting the form. The fire door of the present invention can take, for example, a combination of the following modifications and at least two modifications not contradictory to each other.

(Modification 1)
The mounting structures of the first to ninth modifications suppress the displacement of the decorative material 42 in the longitudinal direction ZA of the decorative material 42 while suppressing the displacement of the decorative material 42 in the direction orthogonal to the longitudinal direction ZA of the decorative material 42. Provided to allow. In order to realize this, the attachment structure of the first modification is provided with a structure in which the decorative material 42 can be displaced in the longitudinal direction ZA with respect to the bracket 43.

The mounting structure of Modification 1 has an insertion hole 42c for the decorative material 42 in the example of FIG. The insertion hole 42c is a long hole extending in the longitudinal direction ZA. The mounting hole 43c of the bracket 43 is normally positioned at the upper part in the longitudinal direction ZA of the insertion hole 42c. As shown in FIG. 9B, when the decorative material 42 is heated in the event of a fire, the decorative material 42 is applied to the screw 45 and the bracket 43 even if the upward deformation of the decorative material 42 occurs. It only displaces upward. Therefore, it is suppressed that the force by the thermal deformation of the decorative material 42 acts on the core material 50 (hereinafter referred to as effect α).

The mounting structure of Modification 1 has a mounting hole 43c of the bracket 43 in the example of FIG. The attachment hole 43c is a long hole extending in the longitudinal direction ZA. According to this, when the decorative material 42 is heated in the event of a fire, even if the upward deformation of the decorative material 42 occurs, the decorative material 42 is displaced upward with respect to the bracket 43 together with the screw 45. Therefore, the above-described effect α can be obtained. The screw 45 is a tapping screw.

(Modification 2)
The attachment structure of Modification 2 is a structure in which the decorative material 42 is directly attached to the core member 50 without using the bracket 43. The attachment structure of Modification 2 is provided with a structure in which the decorative material 42 can be displaced in the longitudinal direction ZA with respect to the core material 50.

11 has a mounting hole 51 formed on the side surface in the width direction ZB of the core member 50 in the example of FIG. The attachment hole 51 is a long hole extending in the longitudinal direction ZA. In this case, a cover 52 covering the attachment hole 51 is attached to the inside of the core member 50 by adhesion, welding, or the like. The cover 52 is made of, for example, stainless steel.

According to this, when the decorative material 42 is heated in the event of a fire, even if the upward deformation of the decorative material 42 occurs, the decorative material 42 is displaced upward with respect to the core material 50 together with the screw 45. . Therefore, the above-described effect α can be obtained. In addition, by covering the attachment hole 51 with the cover 52, it is possible to prevent a flame or hot air from entering the core member 50 through the attachment hole 51 from the gap between the decorative material 42 and the core member 50. *

In addition, it may replace with the cover 52 and you may attach the sheet | seat member which covers the attachment hole 51 of the core material 50 from the left-right direction ZB to the back side of the core material 50. FIG. An insertion hole into which a screw can be inserted is formed in the sheet member. The sheet member is sandwiched between the core member 50 by a nut that can be coupled to the screw 45. According to this, when the decorative material 42 is heated in the event of a fire, and when the thermal deformation upward of the decorative material 42 occurs, the screw 45, the nut, and the sheet member move upward together with the decorative material 42. At this time, it is preferable that the sheet member is set to a size that can cover the mounting hole 51 even if it moves upward.

(Modification 3)
The mounting structure of Modification 3 is a structure in which the bracket 43 can be displaced in the longitudinal direction ZA integrally with the decorative material 42 with respect to the core material 50.

The mounting structure of Modification 3 has a pair of insertion holes 43d formed in the core material mounting portion 43a of the bracket 43 in the example of FIG. The insertion hole 43d is a long hole extending in the longitudinal direction ZA. The mounting structure has a pair of mounting holes 53 formed in the core member 50. The bracket 43 is normally arranged so that the attachment hole 53 of the core member 50 is located at the upper end portion of the insertion hole 43d of the bracket 43. The screws 43 A are inserted into the insertion holes 43 d and screwed into the attachment holes 53, so that the bracket 43 is attached to the core member 50. The attachment hole 53 is a screw hole for screwing the screw 45A.

As shown in FIG. 12 (b), when the decorative material 42 is heated in the event of a fire, the decorative material 42, together with the bracket 43 and the core material 50 and screws, even if thermal deformation occurs upward of the decorative material 42. Displaces upward with respect to 45A. It can be said that the bracket 43 has a structure that can move in the longitudinal direction ZA of the decorative material 42 when the decorative material 42 is thermally deformed. Therefore, the above-described effect α can be obtained.

(Modification 4)
As shown in FIG. 13A, the mounting structure of the modification 4 includes a circular insertion hole 42c and a slit 42d extending upward and downward from the insertion hole 42c. The short diameter of the slit 42d is smaller than the outer diameter of the screw portion 45a of the screw 45. As shown in FIG. 13B, when the decorative material 42 is heated in the event of a fire, the decorative material 42 is displaced upward with respect to the screw 45 even if the upward deformation of the decorative material 42 occurs. To do. At this time, the screw 45 spreads the lower slit 42 d and the decorative material 42 moves upward with respect to the core material 50. Therefore, the above-described effect α can be obtained. . In addition, since the slit 42d restricts the movement of the screw 45 in the longitudinal direction ZA at the normal time, the movement of the cosmetic material 42 relative to the core material 50 in the longitudinal direction ZA of the cosmetic material 42 is suppressed. Note that the mounting hole 51 of the core member 50 of Modification 2 and the insertion hole 43d of the bracket 43 of Modification 3 may be similarly changed.

(Modification 5)
The attachment structure of the modified example 5 attaches the decorative material 42 to the bracket 43 so as to be displaceable in the longitudinal direction ZA so as to suppress the occurrence of thermal stress in the longitudinal direction ZA of the decorative material 42 without using the screws 45. Structure.

14 has a support member 40 that is attached to the upper end portion of the side cover portion 42b of the decorative material 42 by bonding, welding, or the like in the example of FIG. The support member 40 is L-shaped when viewed from the front-rear direction ZC. Between the support member 40 and the side cover part 42b, the insertion part 47 which can insert the cosmetic material support part 43b of the bracket 43 in the front-back direction ZC is comprised. The decorative material 42 is supported by the bracket 43 by inserting the decorative material support portion 43 b into the insertion portion 47.

When the decorative material 42 is heated in the event of a fire, the decorative material 42 tends to extend upward. Here, the elongation of the decorative material 42 is not restricted by the screw 45. That is, generation of thermal stress in the longitudinal direction ZA of the decorative material 42 is suppressed. As a result, the upper end portion of the decorative material 42 is displaced upward with respect to the bracket 43. For this reason, it is not necessary to apply the force due to the thermal deformation of the decorative material 42 to the bracket 43.

(Modification 6)
In the mounting structure of the modified example 6, the bracket 43 is integrated with the decorative material 42 in the longitudinal direction with respect to the core material 50 so as to suppress the occurrence of thermal stress in the longitudinal direction ZA of the decorative material 42 without using spot welding. It is a structure attached to ZA so as to be displaceable.

15 has a pair of support members 48 that are attached to the core member attachment portion 43a of the bracket 43 by adhesion, welding, or the like in the example of FIG. The support member 48 is L-shaped when viewed from the width direction ZB. The support member 48 constitutes an insertion portion in which the upper end portion of the core member 50 can be inserted in the width direction ZB between itself and the cover main body 42a. The bracket 43 is attached to the core member 50 by inserting the upper end portion of the core member 50 into the insertion portion. The number of support members 48 can be arbitrarily set, and may be three or more or one.

When the decorative material 42 is heated in the event of a fire, the decorative material 42 tends to extend upward. Here, the elongation of the decorative material 42 is not restricted by the bracket 43, that is, the generation of thermal stress in the longitudinal direction ZA of the decorative material 42 is suppressed. As a result, the upper end portion of the decorative material 42 is displaced upward with respect to the core material 50 together with the bracket 43. It can be said that the bracket 43 has a structure that can move in the longitudinal direction ZA of the decorative material 42 when the decorative material 42 is thermally deformed. For this reason, it is not necessary to apply a force due to thermal deformation of the decorative material 42 to the core material 50.

(Modification 7)
The attachment structure of the modified example 7 is a structure in which a part of the bracket 43 can be displaced in the longitudinal direction ZA with respect to the core member 50. The “part of the bracket 43” here is the decorative material support portion 43b of the bracket 43 in the example of FIG. 16, and the core material mounting portion 43a of the bracket 43 in the example of FIG.

As an example of this, the mounting structure of the modified example 7 has a fragile portion provided on the decorative material support portion 43 b of the bracket 43. The fragile portion is for facilitating deformation of the portion of the bracket 43 where the attachment hole 43c is formed upward.

In the example of FIG. 16A, the attachment structure of the modified example 7 has a notch 43e formed as a fragile portion in the decorative material support portion 43b. The notch 43e opens upward. According to this, when the decorative material 42 is heated in the event of a fire, and the force of thermal deformation upward of the decorative material 42 is transmitted to the decorative material support portion 43b of the bracket 43, the core material attaching portion of the notch 43e. The decorative material support portion 43b is deformed upward with respect to the core material 50 with the end portion on the 43a side as a fulcrum. Therefore, the above-described effect α can be obtained.

In addition, the thickness of the fragile portion may be thinner than the thickness of the other portion of the decorative material support portion 43b. Further, the fragile portion may be formed of a material that is easier to deform than other portions. For example, when the other portion is stainless steel, the fragile portion may be a resin or the like.

In the example of FIG. 17A, the attachment structure of the modified example 7 has a pair of cutout portions 43f formed as weak portions in the core material attachment portion 43a. The notch 43f opens upward. According to this, when the decorative material 42 (see FIG. 13) is heated in the event of a fire, and the force due to thermal deformation upward of the decorative material 42 acts on the decorative material support portion 43b, the width direction ZB of the notch 43f. The core attachment portion 43a is deformed upward together with the decorative material support portion 43b with the center portion of the center portion as a fulcrum. Thereby, the above-mentioned effect α can be obtained.

In addition, the weak part may be provided by forming a notch part below the longitudinal direction of the bracket 43 or both in the longitudinal direction. The bracket 43 provided with the fragile portion is considered to be deformable in the longitudinal direction ZA of the decorative material 42 as the decorative material 42 is thermally deformed.

In the example of FIGS. 16B and 16C, the attachment structure of the modified example 7 includes a displacement member 49 attached to the decorative material support portion 43b so as to be displaceable with respect to the decorative material support portion 43b. The displacement member 49 is formed with a decorative material mounting hole 49a for mounting the decorative material 42 with screws 45 (see FIG. 13). In the example of FIG. 16B, the displacement member 49 is attached to the decorative material support portion 43b with a screw 45B. When an upward force is applied to the displacement member 49, it can rotate upward with respect to the decorative material support portion 43b around the screw 45B. In the example of FIG. 16C, a screw attachment hole 49 b to which the screw 45 B is attached is formed in the displacement member 49. This screw attachment hole 49b is a long hole extending in the longitudinal direction ZA. Therefore, when an upward force is applied to the displacement member 49, the displacement member 49 can be displaced upward with respect to the screw 45B and the decorative material support portion 43b. Also by these, the above-mentioned effect α can be obtained.

In the example of FIG. 17B, the attachment structure of the modified example 7 is divided into two parts in the core material attaching part 43a, and the center part of the width direction ZB is overlapped in the front-rear direction ZC to the core material 50 by screws 45A. It is an attached structure. According to this, when the decorative material 42 (not shown in FIG. 17) is heated and a force due to thermal deformation upward of the decorative material 42 acts on the decorative material support portion 43b in the event of a fire, the screw 45A is the center. The two core material attachment portions 43a rotate upward together with the decorative material support portion 43b. Thereby, the above-mentioned effect α can be obtained.

(Modification 8)
The attachment structure of Modification 8 is a structure in which fixing to at least one core material 50 at the upper end portion and the lower end portion of the decorative material 42 is omitted so as to suppress the generation of thermal stress in the longitudinal direction ZA of the decorative material 42. .

The attachment structure of the modified example 8 is a structure in which the decorative material 42 is attached to the bracket 43 in the example of FIG. 18A, and the decorative material 42 is directly attached to the core member 50 in the example of FIG. It is a structure that can be attached. In any example, the decorative material 42 is fixed only to the central portion of the core material 50, and the decorative material 42 is not fixed to other portions of the core material 50. The other portions include the upper end portion and the lower end portion of the core member 50. In order to realize this, in the example of FIG. 18A, the upper end bracket 43 and the lower end bracket 43 of the core member 50 are omitted. Similarly, the screws 45 and the insertion holes 42c (see FIG. 4) used for fixing the core member 50 at these portions are also omitted. The same applies to the example of FIG.

Normally, the decorative material 42 is fixed to the central portion of the core material 50 with the screw 45, and the decorative material 42 is prevented from falling off the core material 50. Further, when the decorative material 42 is heated in the event of a fire, the decorative material 42 tends to extend in the longitudinal direction ZA. Here, the elongation of the decorative material 42 is not restricted by the screw 45 at the upper end portion and the lower end portion thereof. That is, generation of thermal stress in the longitudinal direction A of the decorative material 42 is suppressed. Thereby, the upper end portion and the lower end portion of the decorative material 42 are displaced in the longitudinal direction with respect to the core material 50. Therefore, the above-described effect α can be obtained.

(Modification 9)
The attachment structure of Modification 9 includes a divided decorative material 42 A that is divided into two in the longitudinal direction ZA of the decorative material 42. This attachment structure is a structure that can allow thermal deformation in the longitudinal direction ZA between the adjacent divided decorative materials 42A in the longitudinal direction ZA of the decorative material 42.

19A and 19B, the mounting structure of Modification 9 includes two divided decorative materials 42A that are divided at the center in the longitudinal direction ZA of the decorative material 42. In the example of FIG. 19A, the upper divided decorative material 42 A is attached by screws 45 only to the bracket 43 attached to the upper end portion of the core material 50. The lower divided decorative material 42 A is attached by screws 45 only to the bracket 43 attached to the lower end portion of the core material 50. In the example of FIG. 19B, the upper divided decorative material 42 A is attached to only the upper end portion of the core material 50 with screws 45. The lower divided decorative material 42 A is attached to only the lower end portion of the core material 50 with screws 45. 19A and 19B, the decorative material 42 is fixed only to the upper end portion and the lower end portion of the core material 50, and the decorative material 42 is not fixed to other portions of the core material 50.

When each divided decorative material 42A is heated and thermally deformed in the event of a fire, the upper divided decorative material 42A tends to extend downward along the slope at the end, and the lower divided decorative material 42A is placed on the slope at the end. It tries to extend diagonally upward along. Here, the elongation of the decorative material 42 is not constrained by the screw 45 at the center. That is, the generation of thermal stress in the longitudinal direction ZA of the divided decorative material 42A is suppressed. Thereby, it is suppressed that the force by the thermal deformation of the division | segmentation decorative material 42A acts on the core material 50. FIG.

The dividing position of the decorative material 42 is not limited to the central portion in the longitudinal direction ZA, and may be lower than the central portion. Further, as a structure that allows thermal deformation in the longitudinal direction ZA between the adjacent divided decorative materials 42A, the end portion of one divided decorative material 42A is inserted into the end portion of the other divided decorative material 42A. May be. Furthermore, the division | segmentation end surface may not be diagonal but may be horizontal.

(Modification 10)
The attachment structures of Modifications 10 to 13 are provided so as to allow displacement in the direction orthogonal to the longitudinal direction of the decorative material 42 while suppressing displacement of the decorative material 42 in the longitudinal direction.

The attachment structure of Modification 10 is a structure in which the bracket 43 is attached only to the upper end portion and the lower end portion of the core member 50 in the example of FIG. That is, the bracket 43 at the center of the core member 50 is omitted. According to this, when the decorative material 42 is heated and the decorative material 42 is thermally deformed in the event of a fire, in particular, the central portion of the decorative material 42 in the longitudinal direction ZA is deformed to one side in the longitudinal direction ZC away from the core material 50. It becomes easy to do. Therefore, the above-described effect α can be obtained.

The attachment structure of Modification 10 is a structure in which brackets 43 are attached only to the center portion and the lower end portion of the core member 50 in the example of FIG. That is, the bracket 43 at the upper end of the core member 50 is omitted. According to this, when the decorative material 42 is heated and the decorative material 42 is thermally deformed in the event of a fire, even if the upward deformation of the decorative material 42 occurs, the decorative material 42 is merely displaced upward. is there. Therefore, the above-described effect α can be obtained.

In the example of FIG. 20C, the mounting structure of Modification 10 is characterized by the arrangement pitch Pt between the screws 45 adjacent in the longitudinal direction ZA. Specifically, the arrangement pitch Pt of the screws 45 that fix the decorative material 42 to each of the upper end portion and the center portion of the core material 50 is set, and the screw 45 that fixes the decorative material 42 to each of the center portion and the lower end portion of the core material 50. It becomes larger than the arrangement pitch Pt. The arrangement pitch Pt between the brackets 43 adjacent in the longitudinal direction ZA has the same relationship. *

According to this, the upper part of the cosmetic material 42 that is easily heated is more likely to be deformed to one side in the front-rear direction ZC that is away from the core material 50 than the lower part of the cosmetic material 42 that is difficult to be heated. Therefore, in the upper part of the decorative material 42 where the force due to the thermal deformation of the decorative material 42 is large, the force due to the thermal deformation of the decorative material 42 is suppressed from acting on the core member 50 via the screw 45. Therefore, as compared with the case where the arrangement pitch Pt is equal, the deformation of the core member 50 can be suppressed while the attachment strength of the decorative material 42 when the fire is not generated is the same.

In the example of FIG. 21, the mounting structure of the modified example 10 increases as the arrangement pitch Pt of the screws 45 goes from the lower side to the upper side of the core member 50. The arrangement pitch Pt of the bracket 43 has the same relationship. According to this, the deformation of the core member 50 can be suppressed while increasing the attachment strength of the decorative material 42 when no fire has occurred. The structure shown in FIGS. 20 and 21 can also be applied to a structure in which the core member 50 and the decorative material 42 are directly attached with the screws 45. Thus, the number of brackets 43 and screws 45 and the arrangement position in the longitudinal direction ZA are not particularly limited.

20A and 20B, the attachment material 42 is attached to the core material 50 with screws 45 only at two locations selected from the three locations of the upper end portion, the central portion, and the lower end portion of the core material 50. It can also be regarded as a structure that is fixed to the surface. In addition, the attachment structure in FIG. 20C can be regarded as a structure in which the decorative material 42 is fixed to the core material 50 with screws 45 at only three positions, that is, the upper end portion, the central portion, and the lower end portion of the core material 50. These attachment structures have a structure in which the decorative material 42 is not fixed to other portions of the core material 50 as described with reference to FIG. Here, “three places” means three different portions in the longitudinal direction ZA of the core material 50, and the same position in the longitudinal direction ZA and different portions in the width direction ZB are the same one place. As *

(Modification 11)
The attachment structure of the modified example 11 is a structure that can allow thermal deformation in the thickness direction ZC away from the core member 50 at the center in the longitudinal direction ZA of the decorative material 42.

The mounting structure of Modification 11 has an insertion hole 42c formed in the center of the decorative material 42 in the example of FIG. The insertion hole 42c is a long hole extending in the front-rear direction ZC. In the example of FIG. 23, the attachment structure of Modification 11 includes a bracket 43 attached to the central portion of the core member 50 and an attachment hole 43 c formed in the bracket 43. The attachment hole 43c is a long hole extending in the front-rear direction ZC. According to this, when the decorative material 42 is heated and thermally deformed in the event of a fire, the decorative material 42 is easily deformed so that the central portion thereof is separated from the core material 50 with the upper end portion and the lower end portion as fulcrums. Become. Therefore, the above-described effect α can be obtained.

24, in the example of FIG. 24, the bracket 43 attached to the center part of the core member 50 has a displacement member 49 attached to the decorative material support part 43b. The displacement member 49 can be displaced in the front-rear direction ZC with respect to the decorative material support portion 43b. According to this, when the decorative material 42 is heated and the decorative material 42 is thermally deformed in the event of a fire, the displacement member 49 moves to one side in the front-rear direction ZC that is away from the core material 50 with respect to the decorative material support portion 43b. . Along with this, the central portion of the decorative material 42 in the longitudinal direction ZA is displaced to one side in the front-rear direction ZC away from the core material 50. Therefore, the above-described effect α can be obtained.

(Modification 12)
The bracket 43 may omit the core attachment part 43a. In the example of FIG. 25, the decorative material support portion 43 b is directly attached to the front surface of the core material 50. The core material 50 and the decorative material support portion 43b are fixed by spot welding, for example. The decorative material support portion 43b is attached to the upper end portion, the central portion, and the lower end portion of the core member 50. The decorative material support portions 43b are attached to both side surfaces of the core material 50 in the width direction ZB. In this case, the decorative material support portion 43b protrudes from the core material 50 in the front-rear direction ZC. Similarly, the decorative material support portion 43b may be attached to the back surface of the core material 50.

(Modification 13)
As shown in FIG. 26, the bracket 43Y may have a length that is substantially the same as the length of the core member 50 in the longitudinal direction ZA. A cosmetic material support portion 43b is provided on the upper end portion, the center portion, and the lower end portion of the core material attachment portion 43a of the bracket 43Y by partially cutting the bracket 43Y.

(Modification 14)
The attachment structure of the modified example 14 is a structure in which the fixing force of the decorative material attaching portion for attaching the decorative material 42 to the core material 50 decreases with an increase in temperature in the event of a fire. As the mounting structure, the following structures (A) and (B) may be provided. The attachment structure of this example allows displacement in the longitudinal direction of the decorative material 42 while suppressing displacement in the direction orthogonal to the longitudinal direction of the decorative material 42.

(A) The mounting structure uses, for example, a resin screw that can be melted in the event of a fire as the screw 45 that fixes the decorative material 42 to at least one of the upper end and the lower end of the core member 50. In this mounting structure, a metal screw is used as the screw 45 for fixing the decorative material 42 to the central portion of the core member 50. According to this, when the decorative material 42 is heated in the event of a fire, the resin screw 45 is melted by transferring heat to the screw 45. As a result, the decorative material 42 can be displaced relative to the core material 50. For this reason, the above-described effect α can be obtained.

In addition to this, the mounting structure may use a resin screw that can be melted in the event of a fire as the screw 45 that fixes the decorative material 42 to the center of the core member 50. In this case, a metal screw is used as the screw 45 for fixing the decorative material 42 to at least one of the upper end portion and the lower end portion of the core member 50. According to this, when the decorative material 42 is heated in the event of a fire, the resin screw 45 melts, and the central portion of the decorative material 42 is separated from the core material 50 by the thermal deformation of the decorative material 42 in the front-rear direction ZC. Displace. For this reason, the above-described effect α can be obtained.

In addition, in the reference heat shielding structure TBC of FIG. 5, only the screw 45 that fixes the decorative material 42 to the upper end portion, the central portion, and the lower end portion of the core member 50 may be used. In this case, as other screws 45, resin screws that can be melted in the event of a fire are used. According to this, the above-mentioned effect α can be obtained. In the reference heat shield structure TBC in FIG. 5, the metal screw may be only the screw 45 that fixes the decorative material 42 to the upper end portion and the lower end portion of the core member 50. In addition to this, the metal screw may be only the screw 45 for fixing the decorative material 42 to the central portion and the lower end portion of the core member 50, or only the screw 45 for fixing the decorative material 42 to the central portion. There may be.

(B) In the mounting structure, instead of the resin screw 45 of (A), a brazing wax that can be melted in the event of a fire may be used as the mounting member for fixing the decorative material 42. When this brazing is used, the core member 50 and the bracket 43 may be fixed by brazing, or the bracket 43 and the decorative material 42 may be fixed by brazing. Moreover, instead of the resin screw 45 of (A), an adhesive that can be melted in the event of a fire may be used as an attachment member for fixing the decorative material 42. This adhesive is, for example, a thermoplastic adhesive. Further, instead of the resin screw 45 of (A), another material having a low melting point that can be melted in a fire may be used. In either case, the above-described effect α can be obtained.

(Other)
In the embodiment, the fire prevention equipment is embodied as the fire door 1, but the fire prevention equipment is not limited to the fire door, and may be, for example, a fire prevention window. In addition, the fire door 1 may be a sliding door instead of the draw type, an open door, a folding door or other doors instead of the sliding door.

When the mounting structure is provided so as to allow displacement of the decorative material 42 in the longitudinal direction, the following configuration may be adopted. For example, in the longitudinal direction ZA of the decorative material 42, the mounting structure may be formed with a gap that allows thermal deformation of the decorative material 42 between other components of the fire door 1. In addition to this, on one side or both sides in the longitudinal direction ZA from the decorative material 42, another component (see FIG. 1) of the fire door 1 may be provided with an accommodating portion 54 that can accommodate the decorative material 42. Good. In FIG. 1, an example in which the accommodating portion 54 is provided in the lateral member 27 on one side (upper side) in the longitudinal direction ZA from the decorative material 42 of the door butt side vertical gutter 22 is shown. The place where the accommodating portion 54 is provided is the longitudinal direction ZA of the decorative material 42 and is the side where the displacement of the decorative material 42 is allowed by the mounting structure. A part of the decorative material 42 is accommodated in the accommodating portion 54 when the decorative material 42 is thermally deformed and displaced to one side in the longitudinal direction in which the displacement is allowed. At this time, a part of the decorative material 42 is fitted into the accommodating portion 54.

The screw 45 is illustrated as an attachment member for fixing the decorative material 42. In addition to this, the mounting member may be a combination of a bolt and a nut, a nail (not shown), an adhesive tape, an adhesive, or the like. The screw 45 may be a tapping screw that can be tapped.

1 ... Fire door (fire prevention equipment), 42 ... decorative material, 43 ... bracket (mounting structure), 45 ... screw (mounting member, mounting structure), 50 ... core material

Claims

A core material that is a component of the frame of the fire prevention equipment;
A decorative material attached to the core;
An attachment structure for attaching the decorative material to the core material;
The mounting structure is a fire prevention facility that allows displacement of the decorative material relative to the core material when the decorative material is thermally deformed.
The attachment structure is provided to allow displacement of the decorative material in a direction orthogonal to the longitudinal direction while suppressing displacement of the decorative material in the longitudinal direction of the decorative material. The fire protection equipment described.
The fire prevention equipment according to claim 1 or 2, wherein the mounting structure fixes the decorative material by a mounting member at a plurality of locations selected from three locations, an upper portion, a central portion, and a lower portion of the core material.
The attachment structure has a bracket for attaching the decorative material to the core material,
4. The bracket according to claim 3, wherein the bracket is deformable in a longitudinal direction of the decorative material in accordance with thermal deformation of the decorative material, and the attachment member fixes the decorative material and the core material in the bracket. The fire protection equipment described.
The mounting structure is provided to allow displacement of the decorative material in the longitudinal direction while suppressing displacement of the decorative material in a direction orthogonal to the longitudinal direction of the decorative material. The fire protection equipment described.
6. A housing portion capable of housing the cosmetic material is formed in another component of the fire prevention equipment on a side where displacement of the cosmetic material is allowed by the mounting structure in a longitudinal direction of the decorative material. Fire prevention equipment as described in.
The attachment structure has a bracket for attaching the decorative material to the core material,
The fire protection equipment according to claim 5 or 6, wherein the bracket is configured to be movable in a longitudinal direction of the decorative material when the decorative material is thermally deformed.
The fireproof equipment according to any one of claims 1 to 7, further comprising a fireproof plate disposed between the core material and the decorative material.