JP3114716U - Fireproof outer wall structure of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fireproof outer wall structure of a building which has excellent fire resistance, can exhibit a high heat insulation effect, and can reliably exhibit fire resistance and heat insulation effect by combining low-cost and mass-produced parts by simple processing. To provide.
Panel members 11 and 12 each having a substantially U-shaped projecting portion 13 and a sandwiching piece 14 are provided, and the sandwiching piece 14 is overlapped and combined into a pair to form an exterior body 10. The core material 20 is housed inside the exterior body 10, the projecting portions 13 between the adjacent exterior bodies 10 are connected with a predetermined gap A, and the mounting space S is provided at both exterior body end portions 13a and 13a. . The connecting members 25 and 35 are engaged with the inner peripheral surface in the width direction of the exterior body 10 in the mounting space S, the rod-like members 26 and 36 of the connecting members 25 and 35 are projected from the gap A, and the shielding member 30 that shields the gap A. This is a fire-resistant outer wall structure of a building in which the tip screw portions 26a, 36a of the rod-like members 26, 36 are coupled and fixed with a nut 32.
[Selection] Figure 1

Description

  The present invention relates to a fire-resistant outer wall structure of a building using a building exterior.

2. Description of the Related Art Conventionally, as a new exterior panel replacing a wooden building exterior panel used for constructing a wall surface of a building, there is an exterior panel made of a plate material such as a steel plate, aluminum, and stainless steel. These exterior panels are subjected to processing such as filling the inside of the plate material with resin, foam material or the like.
When constructing exterior panels, for example, the vicinity of the sides of adjacent exterior panels is provided in a shape that can be polymerized in advance, and the exterior panels are directly joined together, or the exterior panels are connected to each other. Therefore, a wall surface or the like is constructed by joining adjacent exterior panels via the joining member.

  As such a connecting and fixing structure of the exterior panel, for example, a first engagement portion and a second engagement portion provided with metal sandwich panels at side end portions parallel to the longitudinal direction on both sides in the width direction of the metal sandwich panel. Sandwiched between the first engaging portion and the protruding portion provided on the back surface side of the second engaging portion, and inserted into both grooves of the reinforcing material having a substantially H-shaped cross section. There is a connection fixing structure of panels (for example, see Patent Document 1).

In addition, it is a connection structure of a heat-resistant fireproof panel in which a fireproof core material is filled between two metal skins, and an end piece of the metal skin on the surface side is made of a fireproof core material at the end of the connection side connecting the panels. It is bent as a connecting piece so as to face the side end face, a gap is formed between the connecting piece and the side end face of the refractory core, and the heat insulating fireproof panel to be connected is fixed to the base material with a gap between the side end faces. The leg pieces on both sides of the long connection tool formed of a refractory material with a substantially U-shaped cross section are inserted into the gap between the side edges of the heat insulation fireproof panel, and reach the connection tool between the connection pieces facing the heat insulation fireproof panel. There is a connection structure of a heat-resistant fireproof panel filled with a joint material and filled with a heat insulating material between the connection tool and the base material (see, for example, Patent Document 2).
JP 2003-27705 A Japanese Patent No. 3021304

  However, the metal sandwich panel connecting and fixing structure of Patent Document 1 includes a metal sandwich panel composed of a surface metal shell and a back metal shell, and in order to give this panel a heat insulation effect, Engaging portions and protruding portions having different shapes for joining the panels to each other are provided at both end portions, and the surface metal outer skin and the back surface metal outer skin have different shapes depending on the engaging portions and the protruding portions. As described above, two types of metal shells are required to construct a metal sandwich panel. In the process of manufacturing each metal hull, each metal hull has a complicated shape, so that there are many processing steps by bending, and there is a problem that the cost is increased due to the complicated processing steps.

Also in the connection structure of the heat insulation fireproof panel of patent document 2, since the end piece of the metal shell on the surface side was bent as a connection piece, it was necessary to form the metal shells having different shapes on the front and back sides. Moreover, since the metal skin is small and the end face of each heat and fire resistant panel is hardly covered with the panel, it cannot be said that the heat insulating structure between the heat and fire resistant panels to be connected is sufficient. The connection structure on the side also had a problem in strength.
Furthermore, regarding the joint surface that joins the heat-insulating refractory panels in the vertical direction, this connecting surface is a complex shape with a different shape, so a complicated bending process is required when manufacturing the end surface. There was a problem that the process was complicated.

  The present invention has been developed as a result of intensive studies in view of the above-described conventional problems, and the object of the present invention is to provide a fire-resistant outer wall of a building that has excellent fire resistance and can exhibit a high heat insulating effect. An object of the present invention is to provide a fireproof outer wall structure for a building that can reliably exert fire resistance and heat insulation effect by combining parts that can be mass-produced at low cost by simple processing.

  In order to achieve the above-mentioned object, the device according to claim 1 is configured such that both ends of a long steel sheet made of steel are bent to be bent outwardly from the substantially U-shaped protruding portion and the protruding portion. A panel member in which a sandwiching piece is formed is provided, and the panel member is overlapped with the sandwiching piece to form a pair to form an exterior body, and a core material having heat insulation is provided inside the exterior body. The projecting portion of the exterior body and the projecting portion of the exterior body adjacent to each other are connected with a predetermined gap to provide a mounting space at both ends of the exterior body, and the widthwise inner peripheral surface of the exterior body of this mounting space This is a fire-resistant outer wall structure of a building in which a connecting member is engaged with, a rod-like member of the connecting member is protruded from a gap, and a tip screw portion of the rod-like member is coupled and fixed by a nut through a shielding member that shields the gap. .

  The invention according to claim 2 is provided with a fastening portion on the other end side of the threaded portion of the rod-shaped member and a locking portion on the end portion of the fastening portion, and in the insertion hole provided in the mounting member for mounting the rod-shaped member. The building has a fire-resistant outer wall structure in which the fastening portion is fixed so as not to rotate.

  The invention according to claim 3 is a fireproof outer wall structure of a building in which a heat insulating material such as ceramic paper is sandwiched between overlapping portions of the sandwiching pieces.

  The invention according to claim 4 is a fire-resistant outer wall structure of a building in which the overlapping portions of the sandwiching pieces are joined in a staggered manner with pop rivets at predetermined intervals.

  The device according to claim 5 is a fireproof outer wall structure of a building in which a heat insulating member is installed in an installation space.

  The invention according to claim 6 is a fireproof outer wall structure of a building in which a heat insulator is interposed between the rod-shaped member and the protruding portion.

  In the invention according to claim 7, the attachment member of the connection member is brought into contact with the inside of the attachment space of the exterior body, the rod-like member of the connection member is passed through the trunk edge through the shielding member, and the screw of the rod-like member is tightened with a nut. It is a fire-resistant outer wall structure of a structure that is screwed and fixed to the trunk edge.

  According to the eighth aspect of the present invention, a frame is fixed to an exterior body, a rail having a flange portion orthogonal to the frame is fixed upward, and an outer wall panel having a groove portion that can be hooked on the flange portion of the rail is mounted. It is a fireproof outer wall structure of a building where the outer wall surface is constructed.

  According to the first aspect of the present invention, it is excellent in fire resistance and can exhibit a high heat insulating effect by firmly joining the exterior bodies together without any gaps while interiorizing the core material inside the exterior body. Since it is a fireproof outer wall structure and an exterior body can be constructed by combining a pair of panel members of one type, the number of parts of the panel member can be halved. The panel member is simple in shape and can be easily formed by simple bending without complicated processing. For example, it can be easily formed by rolling using a roller. Can be increased. Thereby, the efficiency of a processing process can also be improved and the fireproof outer wall structure of the building which can exhibit fire resistance and a heat insulation effect reliably combining these parts which can be mass-produced at low cost can be provided. Moreover, it is a fireproof outer wall structure of a building that is excellent in sound insulation and durability.

  According to the second aspect of the present invention, the connecting member can be easily provided at low cost, and when the exterior bodies are joined to each other by the connecting member, it can be firmly joined and reliably prevented from coming off after joining. It is a fireproof outer wall structure of a building that can do.

  According to the invention according to claim 3, it is possible to improve the heat insulation and sound insulation by sealing the gap between the exterior panels constituting the exterior body, and to prevent the intrusion of the flame into the core material built in the exterior body. It is a fireproof outer wall structure of a building that can also improve fire resistance.

  According to the invention concerning Claim 4, it is the fireproof outer wall structure of the building which can join firmly panel members and can form an exterior body, and can join efficiently with few joint parts.

  The invention according to claim 5 is a fire-resistant structure of a building that can enhance the heat insulating properties of adjacent exterior bodies and that can effectively exhibit extremely high fire resistance when the heat insulating material is effectively installed inside the exterior bodies.

  According to the invention concerning Claim 6, it is a fireproof structure of a building which can be hermetically sealed so as to fill a gap between adjacent exterior bodies, and can further improve heat insulation and fire resistance.

  According to the invention according to claim 7, it is a fire-resistant outer wall structure of a building that can be easily joined to each other by using a trunk edge, and it is not necessary to construct a separate mounting site to configure the outer wall. It is a fire-resistant outer wall structure of a building that can keep costs down.

According to the invention according to claim 8, another outer wall surface can be provided on the outside of the exterior body, the outer wall surface is easy to mount, and only a part of the outer wall surface can be replaced. It is an outer wall structure. Further, the outer wall panel constituting the outer wall surface can be mass-produced at low cost by extrusion molding or pultrusion molding.
Furthermore, the decorativeness can be further improved by constructing the outer wall surface with tiles.

An embodiment of a fireproof outer wall structure of a building according to the present invention will be described with reference to the drawings.
In FIG. 1, panel members 11 and 12 are long steel sheets made of steel, and as shown in FIG. 2, both end portions thereof are bent so that substantially U-shaped protruding portions 13 and 13 are front and back sides. The sandwiching piece 14 is formed by bending further outward from the projecting portion 13.
As shown in FIG. 2, the panel members 11 and 12 on the front and back sides are the same member, and thus the frame-shaped exterior body 10 is configured by combining one type of panel members in pairs. Although not shown in the drawings, the panel members 11 and 12 are coated with a dew condensation preventing agent after galvanizing, for example.

Inside the outer package 10, a core material 20 formed in a plate shape with a heat insulating material is internally laminated in a laminated state, and the sandwiching pieces 14 and 14 are combined in such a manner that the sandwiching pieces 14 and 14 are overlapped. 2 and 9, the overlapping portions are joined by rivets 15 in a staggered manner at predetermined intervals in the longitudinal direction of the panel members 11 and 12. This rivet 15 can be quickly and reliably joined by one-side fastening, particularly by using a pop rivet, and can be easily joined without skill, but a normal rivet may be used, You may make it fix with a volt | bolt nut. For example, a heat insulating material 21 such as ceramic paper is sandwiched between the overlapping portions of the sandwiching pieces 14 and 14.
Although not shown in the drawings, the core member 20 can be attached to the panel member by fixing the panel member about 5 to 6 in the longitudinal direction by screw screws from above the panel member. Prevents slipping off and can be integrated as an exterior body.

As shown in FIG. 6, male rods (tip screw portions) 26a and 36a are formed on the rod-like members 26 and 36 of the connecting members 25 and 35, respectively, and a substantially rectangular fastening is provided at the other end portion. The portions 27 and 37 are provided, and circular locking portions 28 and 38 are provided on the distal ends of the fastening portions 27 and 37.
The attachment member 29 is provided in a substantially rectangular and shallow container shape, and is provided with a rectangular insertion hole 29a to which the fixing portions 27 and 37 can be fixed at a substantially central portion, and each rod-like shape with respect to the insertion hole 29a. When the members 26 and 36 are respectively inserted from the male screws 26 a and 36 a and the fixing portions 27 and 37 are fixed to the insertion holes 29 a, the rod-shaped members 26 and 36 are not rotatable with respect to the mounting member 29. The rod-like members 26 and 36 cannot be removed in the insertion direction by the locking portions 28 and 38.
The connecting members 25 and 35 are formed such that the lengths of the rod-like members 26 and 36 are different from each other. The rod-like members 26 and 36 are pipes constituting the thickness of the outer casing 10 or the trunk edge 16. It can be formed in any length according to the dimensions of the. The attachment member 29 can be used in combination with any of the rod-like members 26 and 36.

  The shielding member 30 is made of steel and is provided at a height substantially equal to that of the exterior body 10. The shielding member 30 is formed in a substantially wave shape in cross section as shown in FIG. The gap A is blocked from the outside and inside of the wall.

The trunk edge 16 constitutes a framework of the outer wall 2 of the building 1. The trunk edge 16 is formed in a substantially rectangular cross section, and is vertically arranged with a horizontal pipe 17 arranged in parallel in the horizontal direction. It is constructed by combining pipes 18.
As shown in FIG. 8, a fixing bracket 19 having a U-shaped cross section is attached to the vertical pipe 18 by using bolts and nuts 24 at the portion of the trunk edge 16 where the horizontal pipe 17 and the vertical pipe 18 intersect. A pair of fixing brackets 19 are attached to both sides of the vertical pipe 18, whereby the horizontal pipe 17 can be attached from both sides of the vertical pipe 18. When the horizontal pipe 17 is inserted and fixed to each fixing bracket 19, the horizontal pipe 17 is disposed on the same plane as the vertical pipe 18, so that the trunk edge 16 is as thick as two pipes. The trunk edge 16 can be constructed as thin as one pipe. For this reason, in the connecting member 25, it is not necessary to prepare two types of the length of the rod-shaped member 26 on the trunk edge 16 side, and it is possible to fix the length from the trunk edge 16 side using one type of connecting member 25.
In this example, the connecting member 25 is attached to the vertical pipe 18, and thereby, a force for supporting the exterior body 10 is applied to the vertical pipe 18 that is a vertical beam, so that a high-strength wall surface is constructed. Yes. The attachment by the connecting member 25 may be performed on the horizontal pipe 17 as necessary.

As shown in FIG. 4, the lateral pipe 17 on the extreme end side is secured to the fixing bracket 19 fixed to the column 3 for supporting the building 1 with bolts and nuts 24 in the vicinity of the end portion.
Further, as shown in FIG. 7, the support 3 has a wall surface that maintains a sealing property in the building 1 by fixing a plate-like member 5 with a decorative interior material 4 adhered thereto by means such as adhesion. It is composed. The plate-like member 5 is provided so as to be in contact with the tip of the rod-like member 26 so that it does not wobble after construction.

When joining the exterior bodies 10, 10, the projecting portion 13 of one exterior body 10 and the projecting portion 13 of the exterior body 10 adjacent to each other are connected with a predetermined gap A, and both projecting portions are provided. A mounting space S is provided at the end portions 13 a and 13 a of the portions 13 and 13.
The attachment members 29 and 39 of the connection members 25 and 35 are engaged with the inner peripheral surface in the width direction of the exterior body 10 in the attachment space S from the front and back sides of the exterior body 10, and the rod-like members 26 and 36 of the connection members 25 and 35 are engaged. Is protruded from the gap A, and the tip screw portions 26a and 36a are screwed into the female screw 32a of the nut 32 through the shielding member 30 that shields the gap A, and are fixedly coupled.

Between the mounting members 29 and 29 in the mounting space S, the heat insulating member 22 is sandwiched, and the mounting member 29 and the protruding portion 13 formed by tightening the mounting member 29 on one side are provided. A gap member 23 having heat insulating properties is sandwiched between the spaces. Thereby, it becomes possible to join the exterior bodies 10 and 10 in a state without loosening after filling the space in the mounting space S and tightening the connecting members 25 and 35.
Further, a heat insulator 33 is interposed between the rod-shaped members 26 and 36 and the protruding portion 13, and the heat insulator 33 closes the gaps on the front and back sides of the adjacent exterior bodies 10 and 10.

  The core material 20, the heat insulating member 22, the gap member 23, and the heat insulating body 33 are all made of a non-combustible material, for example, lightweight, water-resistant ceramic wool or powdered calcium carbonate. Calcium silicate etc. is solidified as a raw material and has high heat insulation, fire resistance and sound insulation. Moreover, you may make it form the heat insulating material 21 also using said materials other than ceramic paper.

1-5, the procedure at the time of constructing | assembling the wall surface of a building with respect to a trunk edge is demonstrated.
First, heat insulation materials 21 and 21 are sandwiched between the sandwiching pieces 14 and 14 in a state where the core member 20 is preliminarily installed inside the panel members 11 and 12, and the sandwiching pieces 14 and 14 are rivet-bonded to provide an exterior body. 10 is configured.
A hole 16a is provided in the body edge 16 at an attachment position of the exterior body 10 with an appropriate tool, and the rod-shaped member 26 of the connecting member 25 is inserted into the hole 16a from the exterior body 10 side. At the time of insertion, the washer 31 is attached after the attachment hole 30a provided in the shielding member 30 and the hole 16a are subsequently inserted, and the nut 32 is screwed onto the male screw 26a of the rod-like member 26 to attach the connecting member 25 to the trunk edge 16. Temporarily fix to.

The mounting member 29 of the connecting member 25 on the trunk edge 16 side (inner wall side of the building 1) is brought into contact with the protruding portion 13 side in the mounting space S of the adjacent exterior body 10, 10, and further, the exterior body 10 On the outer wall side, the attachment member 29 of the connecting member 35 is pressed in the direction of the heat insulating member 22 with the gap member 23 interposed therebetween, and the rod-like member 26 of the connecting member 25 is disposed through the shielding member 30 and the heat insulating body 33. The nut 16 is passed through the edge 16, the shielding member 30 and the heat insulator 33 are interposed between the connecting member 35 and the nut 32, and the nut 32 is screwed to the male threads 26 a and 36 a of the rod-like members 26 and 36 to be fixed to the trunk edge 16. In addition, the exterior bodies 10 and 10 are joined together to construct the outer wall 2 of the building 1.
As described above, the heat insulating member 22 is sandwiched between the attachment members 29 and 29 of the connection members 25 and 35 so as to fill a gap generated between the attachment members 29 and 29 and to connect the connection member 25. , 35 are made difficult to loosen, and the exterior body 10 is firmly joined.

The connecting members 25 and 35 are attached at predetermined intervals in the vertical direction of the panel members 11 and 12 so as not to loosen after the exterior body 10 is joined.
When the exterior body 10 is continuously provided, the exterior body 10 is attached to the trunk edge 16 in the same manner as described above, and the adjacent exterior bodies 10 and 10 are connected to construct a wall surface.

  As shown in FIGS. 4 and 5, an outer wall panel 6 having a decorative property is provided outside the exterior body 10, and the outer wall panel 6 is formed by extruding or drawing a material such as aluminum or metal. In the present embodiment, the outer wall panel 6 is provided with two upward groove portions 6a, the recesses 6b are formed on the upper and lower ends, and the protruding protrusions 6c that can be fitted into the recesses 6b are formed. A rib 6d is provided inside to reinforce it so that it can be formed into a thin shape.

The rail 7 is provided to attach the outer wall panel 6, and the rail 7 is fixed to the frame 8 with a rivet (not shown) so as to be orthogonal to the frame 8. The frame 8 is formed so as to have a substantially convex cross section, and is vertically attached to an arbitrary position of the exterior body 10. When the rail 7 is fixed, the frame 7 is attached so that the flange portion 7 a of the rail 7 opens upward.
When attaching the outer wall panel 6, the outer wall surface of the building 1 is constructed by hanging so as to engage the groove portion 6 a of the outer wall panel 6 with the flange portion 7 a of the rail 7.

Next, the effect | action in the said embodiment of the fireproof outer wall structure of the building of this invention is demonstrated.
The fire-resistant outer wall structure of a building according to the present invention has a projecting portion 13 that is bent at both ends and formed into a substantially U-shape, and a panel member 11 that is bent outward from the projecting portion 13 to form a clamping piece 14. , 12 are provided, and the exterior body 10 is configured by combining a pair of sandwiching pieces 14 and 14 of the panel members 11 and 12 so that the exterior body 10 is composed of one type of panel member having the same shape. When the panel member 11 (12) is processed, it is not necessary to perform a complicated bending process, and the panel member 11 (12) can be formed in a short time by a simple process. The parts can be unified and the cost can be greatly reduced. . Moreover, the assembly work at the time of constructing the outer wall 2 is easy and can be easily assembled.

  The outer wall 2 includes a heat-insulating core 20 inside the exterior body 10, a heat-insulating member 22 is installed in the mounting space S of the adjacent exterior bodies 10, 10, and a shielding member from the front and back sides of the exterior body 10. The fixing members 29 and 29 of the connecting members 25 and 35 are fixed while being engaged with each other, and further, the heat insulating material 21, the gap member 23, and the heat insulating body 33 are interposed therebetween. The heat insulating material is organically stored in the exterior body 10 and can exhibit extremely high heat resistance and fire resistance.

In addition, since these are made of ceramic wool, calcium carbonate or calcium silicate, they are particularly excellent in heat insulation, high durability, sound insulation, and light weight. In addition, it can also be used as a roof, a partition, etc., and can be utilized for every location as a building member constituting a building. Further, for example, another heat-insulating material such as a hard foam urethane board may be used for molding, and in this case, the same effect as ceramic wool or the like can be exhibited.
Furthermore, since the panel members 11 and 12 are subjected to galvanization and a dew condensation preventing agent, they are excellent in water resistance and can prevent dew condensation.

  Moreover, since the exterior body 10 can be reasonably joined to the body edge 16 forming the framework of the building 1 by using the connection members 25 and 35, it is possible to save labor during construction. And the time required for work can be reduced. Since the connecting members 25 and 35 can be manufactured at a low cost with a simple structure, the cost can be reduced.

  On the other hand, since the frame 8 can be attached to the exterior body 10 and the outer wall panel 6 can be attached to the rail 7 fixed to the frame 8, it is possible to easily construct a further outer wall surface on the building 1 without taking time and effort. In addition, since each outer wall panel 6 can be removed and replaced one by one, even if it becomes dirty or damaged, there is no need to rebuild or renovate, and repair can be performed with reduced costs. it can.

  The present invention can be applied to any place where a building such as an inner wall or a roof is constructed in addition to the outer wall.

It is the expanded sectional view which showed one Embodiment of the fireproof outer wall structure of the building in this invention. It is the partially notched top view which showed the exterior body. It is a perspective view which shows the attachment state of an exterior body. It is sectional drawing which showed one Embodiment of the fireproof outer wall structure of the building in this invention. FIG. 5 is a partially enlarged longitudinal sectional view of FIG. 4. It is a perspective view which shows a connection member. It is the partially notched perspective view which showed one Embodiment of the fireproof outer wall structure of the building in this invention. It is the principal part expanded sectional view which showed the joining structure of the trunk edge. It is a side view of an exterior body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Building 2 Outer wall 6 Outer wall panel 6a Groove part 7 Rail 7a collar part 8 Frame 10 Exterior body 11, 12 Panel member 13 Projection part 14 Clamping piece 16 Body edge 20 Core material 21 Heat insulating material 22 Heat insulating member 25, 35 Connection member 26 , 36 Bar-shaped member 26a, 36a Male thread (end screw part)
27, 37 Fastening portion 28, 38 Locking portion 29 Mounting member 29a Insertion hole 30 Shielding member 32 Nut A Gap S Mounting space

Claims (8)

  Provided is a substantially U-shaped projecting portion by bending both ends of a long steel sheet material made of steel, and a panel member that is bent outward from the projecting portion to form a clamping piece. The exterior body is configured by stacking pieces and combining them in pairs, and a core material having a heat insulating property is embedded inside the exterior body, and the projecting portion of the exterior body adjacent to the projecting portion of the exterior body Are provided with a predetermined gap to provide a mounting space at both ends of the outer body, and a connecting member is engaged with the inner circumferential surface of the mounting body in the width direction of the mounting body. A fire-resistant outer wall structure for a building, characterized in that the end thread portion of the rod-shaped member is connected and fixed with a nut through a shielding member that projects from the gap and shields the gap.   A fastening part is provided at the other end of the threaded part of the rod-like member and a locking part is provided at the end of the fastening part, and the fastening part is rotated in a mounting hole provided in a mounting member for mounting the rod-like member. The fireproof outer wall structure of a building according to claim 1, which is fixedly impossible.   The fireproof outer wall structure of a building according to claim 1 or 2, wherein a heat insulating material such as ceramic paper is sandwiched between the overlapping portions of the sandwiching pieces.   The fireproof outer wall structure of a building according to any one of claims 1 to 3, wherein the overlapping portions of the sandwiching pieces are joined in a staggered manner with pop rivets at predetermined intervals.   The fireproof outer wall structure of a building according to any one of claims 1 to 4, wherein a heat insulating member is internally provided in the mounting space.   The fireproof outer wall structure of a building according to any one of claims 1 to 5, wherein a heat insulator is interposed between the rod-shaped member and the protruding portion.   The attachment member of the connection member is brought into contact with the interior of the attachment space of the exterior body, the rod-like member of the connection member is passed through the trunk edge via a shielding member, and is screwed onto the male screw of the rod-like member with a nut. The fireproof outer wall structure of a building according to any one of claims 2 to 6, which is fixed to the trunk edge. A frame is fixed to the exterior body, a rail having a flange portion orthogonal to the frame is fixed, and an outer wall panel having a groove portion that can be hooked on the flange portion of the rail is hung to construct an outer wall surface. The fireproof outer wall structure of a building according to any one of claims 1 to 7.

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