Interior panel, exterior wall structure, and construction method of exterior wall

Abstract

To provide an interior panel, an exterior wall structure, and a construction method of the exterior wall capable of realizing high heat insulation performance.SOLUTION: An interior panel 1 used for an exterior wall structure 9 is provided with an outer peripheral frame 11, a cross rail 13 fixed on an indoor side part of the outer peripheral frame 11, and a heat insulation board 15 fixed on an outdoor side part of the outer peripheral frame 11. The exterior structure 9 is provided with the interior panel 1, an exterior panel 2 arranged on an outdoor side of the interior panel 1, and a metal fitting 3 fixed on the exterior panel 2. A connection member 19 is mounted on the metal fitting 3.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to an interior panel, an outer wall structure, and a method for constructing an outer wall.

Background Art

[0002] An outer wall structure including an exterior panel and an interior panel has been conventionally known. In the outer wall structure disclosed in Patent Document 1, a heat insulating material is filled inside the framework of the interior panel.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above-described conventional outer wall structure, since the heat insulating material of the interior panel is filled inside the framework, there is no heat insulating material in the portion where the framework exists, and it is difficult to obtain a heat insulating effect. For example, in the outer wall structure disclosed in Patent Document 1, vertical frame members are arranged so as to divide the space inside the outer peripheral frame, and the heat insulating material such as rock wool filled inside the outer peripheral frame is divided by the vertical frame members.

[0005] The problem to be solved by the present disclosure is to provide an interior panel, an outer wall structure, and a method for constructing an outer wall that can exhibit high heat insulation performance.

Means for Solving the Problems

[0006] An interior panel according to an aspect of the present disclosure is an interior panel used for an outer wall structure, and includes an outer peripheral frame, a horizontal member fixed to an indoor side portion of the outer peripheral frame, and a heat insulating board fixed to an outdoor side portion of the outer peripheral frame.

[0007] An outer wall structure according to an aspect of the present disclosure includes an interior panel, an exterior panel disposed on the outdoor side of the interior panel, and a fitting fixed to the exterior panel. The interior panel includes an outer peripheral frame, a horizontal bar fixed to a portion of the outer peripheral frame on the indoor side, a heat insulating board fixed to a portion of the outer peripheral frame on the outdoor side, a screw penetrating the heat insulating board toward the outdoor side, and a connecting member into which a tip portion of the screw is driven. The connecting member is supported on the outdoor side of the heat insulating board via the screw.

[0008] A method for constructing an outer wall according to an aspect of the present disclosure is a method for constructing an outer wall using an interior panel. The interior panel includes an outer peripheral frame, a horizontal bar fixed to a portion of the outer peripheral frame on the indoor side, a heat insulating board fixed to a portion of the outer peripheral frame on the outdoor side, a screw penetrating the heat insulating board toward the outdoor side, and a connecting member into which a tip portion of the screw is driven. The method for constructing the outer wall includes an attachment step of attaching a fitting to an exterior panel, and a placement step of placing the connecting member on the fitting to support the interior panel on the exterior panel.

Advantages of the Invention

[0009] The present disclosure has an effect of being able to provide an interior panel, an outer wall structure, and a method for constructing an outer wall that can exhibit high heat insulation performance.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

BEST MODE FOR CARRYING OUT THE INVENTION

[0011] 1. One embodiment (Outer wall structure) The outer wall structure 9 of one embodiment will be described with reference to the accompanying drawings. The outer wall structure 9 of one embodiment is a curtain wall type outer wall structure 9 including an interior panel 1 and an exterior panel 2 arranged on the outdoor side of the interior panel 1. Both the interior panel 1 and the exterior panel 2 are manufactured in a factory and then carried into a construction site for use.

[0012] The outer wall structure 9 of one embodiment is attached to, for example, a building frame 8 such as an industrialized house. The frame 8 is a framework structure including a beam 85 and a column (not shown), and is configured to essentially support the load of the building. It is also preferable that the frame 8 further includes other members such as a load-bearing frame.

[0013] The outer wall structure 9 of one embodiment further includes a fitting 3 for connecting the interior panel 1 and the exterior panel 2, and a finishing panel 4 fixed to the indoor side of the interior panel 1.

[0014] Hereinafter, each component included in the outer wall structure 9 of one embodiment will be described in more detail. In the following description, the descriptions such as up and down, left and right, indoor side, and outdoor side are based on the state in which the outer wall structure 9 is assembled.

[0015] (Interior panel) As shown in FIG. 3 and the like, the interior panel 1 is a panel including an outer peripheral frame 11, vertical frame bars 12, horizontal bars 13, a heat insulating board 15, screws 17, and a connecting member 19.

[0016] The outer peripheral frame 11 includes a pair of vertical frames 112 extending vertically and a pair of horizontal frames 114 extending horizontally. The pair of vertical frames 112 and the pair of horizontal frames 114 are fixed to each other so as to form a rectangular shape as a whole.

[0017] The vertical frame bars 12 are respectively fixed to the pair of horizontal frames 114 so as to connect the pair of upper and lower horizontal frames 114 of the outer peripheral frame 11. In the outer wall structure 9 of one embodiment, the interior panel 1 includes one vertical frame bar 12, but the interior panel 1 may also include a plurality of vertical frame bars 12 positioned at a distance from each other in the left - right direction. The interior panel 1 preferably includes at least one vertical frame bar 12, but may also not include a vertical frame bar 12.

[0018] The horizontal bars 13 are fixed to the indoor - side portion of the outer peripheral frame 11. Specifically, three horizontal bars 13 positioned at a distance from each other in the vertical direction are respectively fixed so as to connect the pair of left - right vertical frames 112 of the outer peripheral frame 11. The three horizontal bars 13 are respectively fixed to the surfaces of the pair of vertical frames 112 facing the indoor side. The interior panel 1 may be provided with one or more horizontal bars 13 only at necessary positions, but preferably has a horizontal bar 13 at least at the central portion in the vertical direction of the outer peripheral frame 11.

[0019] In each of the pair of left - right vertical frames 112 of the outer peripheral frame 11, the portion to which the horizontal bar 13 is fixed has a shape recessed by the thickness of the horizontal bar 13. Therefore, in the state where each horizontal bar 13 is fixed to the outer peripheral frame 11, the surface of each horizontal bar 13 facing the indoor side and the surface of the outer peripheral frame 11 facing the indoor side are flush.

[0020] The heat - insulating board 15 is fixed to the outdoor - side portion of the outer peripheral frame 11. Specifically, the heat - insulating board 15 formed in a rectangular flat plate shape using a phenolic - based material is fixed to the surface of the outer peripheral frame 11 facing the outdoor side, for example, via an adhesive layer 181. Also, the heat - insulating board 15 is fixed to the surface of the vertical frame bar 12 facing the outdoor side, for example, via an adhesive layer 182 (see Figure 2).

[0021] The heat insulation board 15 is not filled inside the outer peripheral frame 11 like the heat insulation material of the prior art, but is stacked on the outdoor side of the outer peripheral frame 11. The outer periphery of the heat insulation board 15 is slightly larger than the inner periphery of the outer peripheral frame 11 and substantially coincides with the outer periphery of the outer peripheral frame 11. As shown in FIGS. 1 and 2, a gap 14 is provided between the heat insulation board 15 fixed to the outer peripheral frame 11 and the horizontal cross member 13 located on the indoor side thereof.

[0022] The screws 17 are driven into the outer peripheral frame 11 from the indoor side (see FIG. 3). Specifically, the screws 17 are driven into the upper portions of the pair of left and right vertical frames 112 of the outer peripheral frame 11 from the indoor side respectively. Similarly, the screws 17 are also driven into the upper and lower middle portions of the pair of left and right vertical frames 112 from the indoor side. The screws 17 penetrate the corresponding vertical frames 112 of the outer peripheral frame 11 toward the outdoor side and further penetrate the heat insulation board 15 toward the outdoor side. The screws 17 are, for example, drill screws having a serrated tip at the tip portion.

[0023] The connecting member 19 is supported on the outdoor side of the heat insulation board 15 by the screws 17 penetrating the outer peripheral frame 11 and the heat insulation board 15. The connecting member 19 is a member having a rectangular cross-section extending left and right. A step is formed on the surface facing the indoor side between the upper and lower portions of the connecting member 19, and the upper portion of the connecting member 19 is provided wider than the lower portion of the connecting member 19 in the indoor-outdoor direction. In the outer wall structure 9 of one embodiment, two connecting members 19 are supported at a distance vertically.

[0024] As shown in FIG. 1, the tip portions of the screws 17 are driven into the upper portion of the connecting member 19. In the outer wall structure 9 of one embodiment, the upper portion of the connecting member 19 abuts against the heat insulation board 15, while the lower portion of the connecting member 19 does not abut against the heat insulation board 15, and a gap is formed between the lower portion of the connecting member 19 and the heat insulation board 15. Through this gap, a part of the metal fitting 3 is inserted between the connecting member 19 and the heat insulation board 15.

[0025] In the outer wall structure 9 of one embodiment, the ceiling base 7 is fixed to the upper horizontal frame 114 of the outer peripheral frame 11 of the interior panel 1.

[0026] For the vertical frame 112, horizontal frame 114, vertical frame rail 12, horizontal rail 13, and connecting member 19 that constitute the interior panel 1, a wood material is preferably used. For the vertical frame 112, horizontal frame 114, vertical frame rail 12, and connecting member 19, a single wood material is preferably used. For the horizontal rail 13, a plywood is preferably used.

[0027] (Exterior panel) The exterior panel 2 includes an outer peripheral frame 21, vertical frame rails 22, and an exterior material 25.

[0028] The outer peripheral frame 21 is formed in a rectangular shape, and the vertical frame rails 22 are fixed so as to connect the upper and lower horizontal frames of the outer peripheral frame 21.

[0029] The exterior material 25 is fixed to the outdoor side surface of the outer peripheral frame 21 so as to be exposed to the outside. For the exterior material 25, an ALC (Autoclaved Lightweight aerated Concrete) board is preferably used.

[0030] As shown in FIG. 1, the exterior panel 2 is supported by a beam 85 via a mounting bracket 5. The mounting bracket 5 is an L-shaped bracket. The mounting bracket 5 is fixed to the lower flange 851 of the beam 85 via, for example, a bolt 87. It is preferable that a plurality of mounting brackets 5 are provided at intervals left and right along the beam 85.

[0031] (Bracket) The bracket 3 is fixed to the indoor side of the exterior panel 2. As shown in FIG. 4, the bracket 3 is a crank-shaped bracket including a first piece 31, a second piece 32, and a third piece 33.

[0032] As shown in FIG. 1, the first piece 31 is fixed to the surface facing the indoor side of the outer peripheral frame 21 of the exterior panel 2. Specifically, the first piece 31 is fixed to the vertical frame of the outer peripheral frame 21 via, for example, a screw 38 such as a drill screw.

[0033] The second piece 32 is connected to the first piece 31 so as to form an L shape. In a state where the first piece 31 is fixed to the exterior panel 2, the second piece 32 protrudes indoors from the upper end portion of the first piece 31.

[0034] The third piece 33 is connected to the second piece 32 so as to form an L shape. In a state where the first piece 31 is fixed to the exterior panel 2, the third piece 33 protrudes upward from the indoor-side end portion of the second piece 32.

[0035] Therefore, in a state where the fitting 3 is fixed to the indoor side of the exterior panel 2, a gap 35 that is open upward and on both left and right sides is formed between the vertical frame of the outer peripheral frame 21 and the second piece 32 and the third piece 33 of the fitting 3.

[0036] As shown in FIG. 1, the fitting 3 supports the connecting member 19. The lower part of the connecting member 19 is inserted from above into the gap 35 formed between the fitting 3 and the exterior panel 2. In the indoor-outdoor direction, the lower part of the connecting member 19 has a width substantially equal to that of the gap 35.

[0037] In the outer wall structure 9 of one embodiment, a plurality of upper fittings 3 positioned at a distance from each other left and right and a plurality of lower fittings 3 positioned at a distance from each other left and right are fixed to the indoor side of the exterior panel 2. The plurality of upper fittings 3 are located at the same height as each other. The plurality of upper fittings 3 are, for example, two fittings 3 fixed to the vertical frames on both the left and right sides of the outer peripheral frame 21 of the exterior panel 2. Similarly, the plurality of lower fittings 3 are located at the same height as each other. The plurality of lower fittings 3 are, for example, two fittings 3 fixed to the vertical frames on both the left and right sides of the outer peripheral frame 21 of the exterior panel 2.

[0038] In the outer wall structure 9 of one embodiment, two connecting members 19 provided on one interior panel 1 are supported by a plurality of metal fittings 3 (specifically, two upper metal fittings 3 and two lower metal fittings 3) fixed to one exterior panel 2. However, the two connecting members 19 may be supported across a plurality of exterior panels 2 arranged side by side. In this case, by supporting the two connecting members 19 on the metal fittings 3 of each of the plurality of exterior panels 2, alignment of the plurality of exterior panels 2 arranged side by side is performed. Further, in the outer wall structure 9 of one embodiment, two connecting members 19 are provided on one interior panel 1, but it is also possible to provide one connecting member 19 on one interior panel 1, and it is also possible to provide three or more connecting members 19 with a vertical distance therebetween.

[0039] (Finishing panel) The finishing panel 4 is fixed to the indoor side of the interior panel 1. Specifically, the finishing panel 4 is fixed to the surface of the outer peripheral frame 11 of the interior panel 1 facing the indoor side. The finishing panel 4 is, for example, a gypsum board formed in a rectangular flat plate shape.

[0040] As shown in FIG. 1, the finishing panel 4 is overlapped on the indoor side of the outer peripheral frame 11 so as to hide the horizontal rails 13 and screws 17 of the interior panel 1. A gap 6 is formed between the finishing panel 4 and the heat insulating board 15 overlapped on the outdoor side of the outer peripheral frame 11.

[0041] (Construction method) In the construction method of the outer wall of one embodiment, the outer wall structure 9 is assembled using the above-described interior panel 1, exterior panel 2, metal fitting 3, and finishing panel 4.

[0042] The construction method of the outer wall of one embodiment is a method of separately constructing the interior panel 1 and the exterior panel 2, and includes an attachment step, a placement step, a tightening step, and a finishing step.

[0043] In the attachment step, for example, at the construction site, the fitting 3 is attached to the exterior panel 2. The fitting 3 may be fixed to the exterior panel 2 at a stage prior to supporting the exterior panel 2 on the beam 85, or may be fixed to the exterior panel 2 after supporting the exterior panel 2 on the beam 85. It is also possible to perform the attachment step at a stage prior to the construction site (e.g., the factory). In this case, the fitting 3 is attached to the exterior panel 2 at the stage when it is transported to the construction site.

[0044] In the placement step, the corresponding connecting member 19 of the interior panel 1 is placed on the fitting 3 fixed to the indoor side of the exterior panel 2, thereby supporting the interior panel 1 on the indoor side of the exterior panel 2. Here, the interior panel 1 transported to the construction site includes the outer peripheral frame 11, the vertical frame rail 12, the horizontal rail 13, the heat insulating board 15, the screws 17, and the connecting member 19. That is, at a stage prior to the construction site (e.g., the factory), the screws 17 are driven through the outer peripheral frame 11 and the heat insulating board 15 so as to penetrate the outer peripheral frame 11, and the connecting member 19 is attached via the screws 17.

[0045] At this stage, the screws 17 are only temporarily tightened. The third piece 33 of the fitting 3 is inserted from below into the gap between the lower part of the connecting member 19 and the heat insulating board 15, and the connecting member 19 is placed on the horizontal second piece 32 of the fitting 3.

[0046] At the stage when the placement step is completed, the connecting member 19 is positioned sandwiched between the third piece 33 of the fitting 3 and the exterior panel 2. The third piece 33 of the fitting 3 is positioned sandwiched between the connecting member 19 of the interior panel 1 and the heat insulating board 15.

[0047] In the final tightening step, after the placement step, the screws 17 are finally tightened. That is, in the final tightening step, the screws 17 that penetrate the outer peripheral frame 11 and the heat insulating board 15 and have their tip portions driven into the connecting member 19 are tightened with a tightening torque in the range of, for example, 15 kgf·cm to 30 kgf·cm.

[0048] As a result, an external force in a direction approaching the heat insulation board 15 is applied to the connecting member 19 into which the tip of the screw 17 is driven. Therefore, the third piece 33 of the metal fitting 3 is sandwiched between the connecting member 19 and the heat insulation board 15. According to the construction method of one embodiment, the interior panel 1 can be stably held with respect to the exterior panel 2 by a simple operation of fully tightening the screw 17 at the construction site. Moreover, since the tightening torque of the screw 17 is within the above range, the heat insulation board 15 is prevented from being crushed.

[0049] In the finishing process, after the full tightening process, for example, a finishing panel 4 made of a gypsum board is fixed to the indoor side of the interior panel 1. The finishing panel 4 hides the horizontal rail 13 and the screw 17 provided on the indoor side of the interior panel 1. The finishing panel 4 abuts against the surface of the outer peripheral frame 11 of the interior panel 1 facing the indoor side. The finishing panel 4 preferably abuts against the surface of the horizontal rail 13 facing the indoor side.

[0050] In the outer wall structure 9 of one embodiment constructed as described above, since the transmission of force from the exterior panel 2 or the frame body 8 to the interior panel 1 is suppressed, even when the frame body 8 is greatly deformed due to an earthquake or the like, the interior panel 1 and the finishing panel 4 are effectively prevented from being damaged.

[0051] In addition, in the outer wall structure 9 of one embodiment, instead of filling the inside of the outer peripheral frame 11 with a heat insulating material such as rock wool as in the prior art, a heat insulation board 15 made of a phenolic material is overlapped on the outdoor side of the outer peripheral frame 11. Therefore, the heat insulation performance by the heat insulation board 15 does not partially decrease. Therefore, it is possible to provide an interior panel 1 that exhibits high heat insulation performance, and thus it is possible to provide an outer wall structure 9 that exhibits high heat insulation performance.

[0052] 2. Modification The above-described one embodiment is merely one of various embodiments of the present disclosure, and various changes can be made according to the design and the like as long as the object of the present disclosure can be achieved.

[0053] The various modification examples listed below can be applied in appropriate combinations. In the description of each modification example, for configurations similar to those already described in one embodiment, the same reference numerals are given and detailed descriptions are omitted.

[0054] FIG. 5 shows the fitting 3 included in the outer wall structure 9 of the first modification example. A U-shaped notch 34 is provided in the third piece 33 of the fitting 3 of this modification example. The notch 34 is cut downward from the upper edge of the third piece 33 (in other words, the upper edge of the fitting 3). The notch 34 is open upward, indoors, and outdoors. The notch 34 has left and right edges 341, 342 and a lower edge 345 connecting the lower ends of the left and right edges 341, 342. The left and right edges 341, 342 each have a linear shape extending vertically and are positioned parallel to each other with a distance therebetween left and right. The lower edge 345 has a semi-circular arc shape bulging downward.

[0055] According to the outer wall structure 9 of the first modification example, even when the fitting 3 and the screw 17 are in a positional relationship where they may interfere when the connecting member 19 is placed on the fitting 3, by inserting the screw 17 into the notch 34 of the fitting 3, the interference between the fitting 3 and the screw 17 is avoided.

[0056] FIG. 6 shows a horizontal cross-section of the outer wall structure 9 of the second modification example. In this modification example, in addition to the flat plate-shaped first portion 151 in which the heat insulating board 15 of the interior panel 1 is fixed to the surfaces facing the outdoor sides of the outer peripheral frame 11 and the vertical frame bars 12 via the adhesive layers 181, 182, it integrally has a second portion 152 disposed inside the outer peripheral frame 11. The second portion 152 is formed so as to protrude toward the indoor side from the first portion 151 that forms the main body of the heat insulating board 15. The second portion 152 is formed to abut against the horizontal bar 13. When the interior panel 1 includes a plurality of horizontal bars 13, it is preferable that the second portion 152 abuts against at least one of the plurality of horizontal bars 13, and in order to ensure the strength of the interior panel 1, it is preferable that the second portion 152 abuts against all of the plurality of horizontal bars 13. According to the outer wall structure 9 of the second modification example, the heat insulation property of the interior panel 1 is enhanced, and the strength of the interior panel 1 is enhanced.

[0057] Figure 7 shows a horizontal cross-section of the outer wall structure 9 of the third modification. In this modification, in addition to the heat insulation board 15 of the interior panel 1 having the same first part 151 and second part 152 as in the second modification, the second part 152 is fixed to the horizontal rail 13 via an adhesive layer 183. When the interior panel 1 includes a plurality of horizontal rails 13, the second part 152 is preferably adhered to at least one of the plurality of horizontal rails 13, and in order to ensure the strength of the interior panel 1, it is preferably adhered to all of the plurality of horizontal rails 13.

[0058] Figure 8 shows a horizontal cross-section of the outer wall structure 9 of the fourth modification. In this modification, in addition to the heat insulation board 15 similar to one embodiment, a second heat insulation board 16 disposed inside the outer peripheral frame 11 is provided. The second heat insulation board 16 is formed in a rectangular flat plate shape using a phenolic material. The second heat insulation board 16 is located on the indoor side of the heat insulation board 15 and is disposed so as to contact the surface facing the indoor side of the heat insulation board 15. In addition, the second heat insulation board 16 is formed so as to contact the horizontal rail 13. When the interior panel 1 includes a plurality of horizontal rails 13, the second heat insulation board 16 preferably contacts at least one of the plurality of horizontal rails 13, and in order to ensure the strength of the interior panel 1, it preferably contacts all of the plurality of horizontal rails 13. In the outer wall structure 9 of the fourth modification, the heat insulation property of the interior panel 1 is enhanced, and the strength of the interior panel 1 is enhanced.

[0059] Figure 9 shows a horizontal cross-section of the outer wall structure 9 of the fifth modification. In this modification, in addition to the interior panel 1 including the same second heat insulation board 16 as in the fourth modification, the second heat insulation board 16 is fixed to the horizontal rail 13 via an adhesive layer 183. When the interior panel 1 includes a plurality of horizontal rails 13, the second heat insulation board 16 is preferably adhered to at least one of the plurality of horizontal rails 13, and in order to ensure the strength of the interior panel 1, it is preferably adhered to all of the plurality of horizontal rails 13.

[0060] Also, in this modification, the heat insulation board 15 is fixed to the outer peripheral frame 11, the vertical frame rail 12, and the second heat insulation board 16 via the adhesive layer 185. The adhesive layer 185 integrally includes an adhesive layer for fixing the heat insulation board 15 to the surface of the outer peripheral frame 11 facing the outdoor side, an adhesive layer for fixing the heat insulation board 15 to the surface of the vertical frame rail 12 facing the outdoor side, and an adhesive layer for fixing the heat insulation board 15 to the surface of the second heat insulation board 16 facing the outdoor side. However, these adhesive layers may be formed independently.

[0061] In the above-described embodiment and various modifications, the outer peripheral frame 11 and the horizontal rail 13 are directly fixed. However, the outer peripheral frame 11 and the horizontal rail 13 may be fixed with an intervening object therebetween. Similarly, in the above-described embodiment and various modifications, the outer peripheral frame 11 and the heat insulation board 15 are directly fixed. However, the outer peripheral frame 11 and the heat insulation board 15 may be fixed with an intervening object therebetween.

[0062] In the above-described embodiment and various modifications, the heat insulation board 15 is formed of a phenolic resin. However, the material of the heat insulation board 15 is not limited to this, and the heat insulation board 15 may be formed of other materials such as extruded polystyrene. Similarly, the material of the second heat insulation board 16 in the fourth and fifth modifications is not limited to a phenolic resin, and other materials such as extruded polystyrene may be used.

[0063] The outer wall structure 9 of one embodiment has a curtain wall type structure including the interior panel 1 and the exterior panel 2. However, any structure in which the interior panel 1 and the exterior panel 2 are separated is acceptable, and it is not limited to the curtain wall type.

[0064] 3. Summary As described above based on one embodiment and various modifications, the interior panel (1) according to the first aspect of the present disclosure is an interior panel (1) used for the outer wall structure (9), and includes an outer peripheral frame (11), a horizontal rail (13) fixed to a portion of the outer peripheral frame (11) on the indoor side, and a heat insulation board (15) fixed to a portion of the outer peripheral frame (11) on the outdoor side.

[0065] According to this aspect, instead of filling the inside of the outer frame (11) with a heat insulating material such as rock wool as in the prior art, a heat insulating board (15) is stacked on the outdoor side of the outer frame (11). Therefore, the heat insulating performance does not decrease partially as in the prior art, and high heat insulating property is exhibited. In addition, since the horizontal bars (13) are fixed to the indoor side of the outer frame (11), the strength of the interior panel (1) is ensured.

[0066] In the interior panel (1) according to the second aspect of the present disclosure, in the first aspect, the heat insulating board (15) is formed of a phenolic material.

[0067] According to this aspect, the heat insulating performance of the heat insulating board (15) can be enhanced, and the overall heat transfer coefficient of the interior panel (1) can be lowered. Although it may be difficult to ensure the strength of the heat insulating board (15) by using a phenolic material for the heat insulating board (15), since the horizontal bars (13) are fixed to the indoor side of the outer frame (11), the strength of the interior panel (1) is ensured.

[0068] In the interior panel (1) according to the third aspect of the present disclosure, in the first aspect or the second aspect, a gap (14) is provided between the heat insulating board (15) and the horizontal bar (13).

[0069] According to this aspect, the interior panel (1) can be provided as a hollow panel, and the weight of the interior panel (1) can be reduced.

[0070] In the interior panel (1) according to the fourth aspect of the present disclosure, in the first aspect or the second aspect, the heat insulating board (15) is adhered to the horizontal bar (13).

[0071] According to this aspect, since the heat insulating board (15) is fixed to the horizontal bar (13), the strength of the interior panel (1) is further ensured.

[0072] In the interior panel (1) according to the fifth aspect of the present disclosure, in any one of the first to fourth aspects, it further includes a screw (17) that penetrates the heat insulation board (15) facing the outdoor side, and a connecting member (19) into which the tip of the screw (17) is driven. The connecting member (19) is supported on the outdoor side of the heat insulation board (15) via the screw (17).

[0073] According to this aspect, the interior panel (1) that exhibits high heat insulation performance as described above can be easily attached to the fitting (3) via the connecting member (19), and thus the interior panel (1) can be easily attached to the exterior panel (2).

[0074] The outer wall structure (9) according to the sixth aspect of the present disclosure includes the interior panel (1) of the fifth aspect, an exterior panel (2) disposed on the outdoor side of the interior panel (1), and a fitting (3) fixed to the exterior panel (2). The connecting member (19) is placed on the fitting (3).

[0075] According to this aspect, the interior panel (1) that exhibits high heat insulation performance can be easily attached to the exterior panel (2), and moreover, the transmission of force from the exterior panel (2) to the interior panel (1) is suppressed, so damage to the interior panel (1) due to an earthquake or the like is prevented.

[0076] The method for constructing an outer wall according to the seventh aspect of the present disclosure is a method for constructing an outer wall using the interior panel (1) of the fifth aspect, and includes an attachment step of attaching a fitting (3) to an exterior panel (2), and a placement step of supporting the interior panel (1) on the exterior panel (2) by placing a connecting member (19) on the fitting (3).

[0077] According to this aspect, the interior panel (1) that exhibits high heat insulation performance can be easily attached to the exterior panel (2), and moreover, the transmission of force from the exterior panel (2) to the interior panel (1) is suppressed, so damage to the interior panel (1) due to an earthquake or the like is prevented.

[0078] The interior panel (1) according to the eighth aspect of the present disclosure further includes a final tightening step of finally tightening the screw (17) after the mounting step in the seventh aspect.

[0079] According to this aspect, the interior panel (1) can be stably held against the exterior panel (2) by the work of finally tightening the screw (17) at the construction site.

Explanation of reference numerals

[0080] 1 Interior panel 11 Outer peripheral frame 14 Gap 15 Heat insulation board 17 Screw 19 Connecting member 2 Exterior panel 3 Metal fitting 9 Outer wall structure

Claims

1. An interior panel used for an outer wall structure, comprising: an outer peripheral frame; a horizontal bar fixed to an indoor side portion of the outer peripheral frame; a heat insulation board fixed to an outdoor side portion of the outer peripheral frame, the interior panel.

2. The heat insulation board is formed of a phenolic material, the interior panel of Claim 1.

3. A gap is provided between the heat insulation board and the horizontal bar, the interior panel of Claim 1.

4. The heat insulation board is adhered to the horizontal bar, the interior panel of Claim 1.

5. further comprising a screw penetrating the heat insulation board toward the outdoor side, and a connecting member into which a tip portion of the screw is driven, wherein the connecting member is supported on the outdoor side of the heat insulation board via the screw, the interior panel according to any one of Claims 1 to 4.

6. the interior panel of Claim 5, an exterior panel arranged on the outdoor side of the interior panel, and a fitting fixed to the exterior panel, wherein the connecting member is placed on the fitting, the outer wall structure.

7. A method for constructing an outer wall using the interior panel of Claim 5, comprising: an attachment step of attaching a fitting to an exterior panel; and a placement step of supporting the interior panel on the exterior panel by placing the connecting member on the fitting, the method for constructing an outer wall.

8. further comprising a tightening step of tightening the screw after the placement step, the method for constructing an outer wall of Claim 7.

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