Inter-floor space structure

Abstract

To provide a structure for an inter-floor space that can improve airtightness.SOLUTION: Provided is a structure for an inter-floor space 1 of a building 2 formed among a beam 8 arranged along the outer periphery of the building 2, a floor material 9 of a building upper floor portion 3 supported by the beam 8, and a ceiling material 10 of a building lower floor portion 4 arranged below the beam 8. In the beam 8, at least a beam lower surface 8d facing the ceiling material 10 side is covered with a heat insulating material 16. A frame member 21 arranged along the beam 8 is provided below the beam 8. An upper end 21t of the frame member 21 is in contact with the heat insulating material 16.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to the construction of an inter-storey space. [Background technology]

[0002] A residential ventilation system is described in Patent Document 1. This ventilation system is provided with a connecting duct that extends horizontally through the space between the floor of a living room and the ceiling of a living room on the floor below the floor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-164241 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when humid outside air flows into an inter-floor space, which is the space between the floor and ceiling, there is a risk of condensation forming on piping such as connecting ducts.

[0005] The present invention has been devised in view of the above-mentioned circumstances, and its main object is to provide a structure for an inter-floor space that can improve airtightness. [Means for solving the problem]

[0006] The present invention is a structure of an inter-floor space in a building formed between beams arranged along the periphery of the building, floor materials of the upper floors of the building supported by the beams, and ceiling materials of the lower floors of the building arranged below the beams, wherein at least the underside of the beams facing the ceiling materials is covered with insulating material, and below the beams, frame materials are provided along the beams, and the upper ends of the frame materials are in contact with the insulating material. [Effects of the Invention]

[0007] By adopting the above-described configuration, the structure of the inter-floor space of the present invention can improve the airtightness of the inter-floor space. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a cross-sectional view showing the structure of the inter-floor space of the building of this embodiment. [Figure 2] An enlarged view of the structure of the inter-floor space including the first beam. [Figure 3] An enlarged view of the structure of the inter-floor space including the second beam. [Figure 4] FIG. 2 is a perspective view showing a first frame material. [Figure 5] FIG. 10 is a cross-sectional view showing the structure of an inter-floor space according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be understood that the drawings include exaggerated representations and representations that differ from the dimensional ratios of actual structures in order to facilitate understanding of the contents of the invention. Furthermore, identical or common elements are designated by the same reference numerals throughout the embodiments, and redundant explanations will be omitted. Furthermore, the specific configurations shown in the embodiments and drawings are for the purpose of understanding the contents of the present invention, and the present invention is not limited to the specific configurations shown in the drawings.

[0010] [Structure of Interfloor Space (First Embodiment)] 1 is a cross-sectional view showing the structure of an inter-floor space 1 of a building according to this embodiment. In this embodiment, the structure of the inter-floor space 1 is specified on an orthogonal coordinate system having a first direction x (depth direction in FIG. 1), a second direction y (horizontal direction in FIG. 1), and a third direction z (up-down direction in FIG. 1).

[0011] [building] The building 2 in which the inter-story space 1 of this embodiment is provided is, for example, a multi-story house or building. In this embodiment, the upper floor portion 3 and the lower floor portion 4 of the building are provided at the same position in the horizontal direction of the building 2 (the second direction y in FIG. 1 ), but are not limited to this. For example, the lower floor portion 4 of the building may protrude outdoors relative to the upper floor portion 3 of the building.

[0012] In this embodiment, the upper floors 3 and lower floors 4 of the building are partitioned by, for example, exterior walls 5, ceilings 6, floors 7, and partition walls (not shown). From the perspective of reducing the load on an air conditioner (not shown), the upper floors 3 and lower floors 4 of the building are preferably configured as airtight spaces in which the inflow of outside air is suppressed, except for the outside air used for ventilation. However, the upper floors 3 and lower floors 4 of the building are not limited to such airtight spaces.

[0013] [Inter-floor space] The inter-floor space 1 of this embodiment is formed between a beam 8, a floor surface material 9 of the upper floor portion 3 of the building, and a ceiling surface material 10 of the lower floor portion 4 of the building.

[0014] [Beam] The beams 8 are arranged along the periphery of the building 2 (in this example, continuously along the periphery). Note that the beams 8 may be partially discontinued at a part of the periphery of the building 2.

[0015] FIG. 2 is an enlarged view of the structure of the inter-floor space 1 including a first beam 8A. FIG. 3 is an enlarged view of the structure of the inter-floor space 1 including a second beam 8B. As shown in FIGS. 2 and 3, the beam 8 of this embodiment is configured to include a first beam 8A and a second beam 8B. The first beam 8A (shown in FIG. 2) of this embodiment extends in a first direction x. On the other hand, the second beam 8B (shown in FIG. 3) of this embodiment extends in a second direction y (i.e., a direction perpendicular to the first beam 8A shown in FIG. 2). The first beam 8A and the second beam 8B are joined to each other, for example, using metal fittings or the like (not shown). Note that the beam 8 may include other beams (not shown) in addition to the first beam 8A and the second beam 8B.

[0016] The beams 8 of this embodiment (including the first beam 8A and the second beam 8B in this example) are made of H-shaped steel, but are not particularly limited to this. The beams 8 of this embodiment are made up of a web 11 extending vertically, an upper flange 12 extending like a brim from the upper end of the web 11, and a lower flange 13 extending like a brim from the lower end of the web 11.

[0017] The web 11 may have holes (not shown) that penetrate through the web 11 in the thickness direction. Such holes allow, for example, ducts (not shown) of an air conditioner, a ventilation device, or the like, electric wires, and the like to easily pass through the web 11.

[0018] The upper flange 12 of this embodiment has a beam upper surface 8u formed thereon that faces the floor surface material 9. The floor surface material 9 is in contact (fixed) with the beam upper surface 8u of this embodiment. On the other hand, the lower flange 13 of this embodiment has a beam lower surface 8d formed thereon that faces the ceiling surface material 10.

[0019] [Insulation material] In this embodiment, the beams 8 (including the first beam 8A and the second beam 8B in this example) are covered with a heat insulating material 16 on at least the beam underside 8d. The heat insulating material 16 in this embodiment is composed of a first heat insulating material 16A (shown in FIG. 2) that covers the first beam 8A and a second heat insulating material 16B (shown in FIG. 2) that covers the second beam 8B. If other beams are included in addition to the first beam 8A and the second beam 8B, it is preferable that a heat insulating material (not shown) that covers the other beams is further included.

[0020] As shown in Figures 1 to 3, the insulating material 16 of this embodiment (including the first insulating material 16A and the second insulating material 16B in this example) covers not only the underside 8d of the beams but also the outer surfaces of the beams 8 arranged on the inter-floor space 1 side (in this example, all outer surfaces except the upper surface 8u of the beams). Such insulating material 16 can prevent heat from the outside air from being transferred to the inter-floor space 1 through the beams 8, thereby improving the insulation properties of the inter-floor space 1. Furthermore, the insulating material 16 can block holes (not shown) formed in the webs 11 of the beams 8, thereby preventing outside air from flowing into the inter-floor space 1 and improving the airtightness of the inter-floor space 1.

[0021] The insulating material 16 of this embodiment (including the first insulating material 16A and the second insulating material 16B in this example) is not particularly limited as long as it can improve the thermal insulation and airtightness of the inter-floor space 1, but it is preferable to use a fibrous insulating material (e.g., rock wool, glass wool, etc.). Such fibrous insulating materials are flame retardant, thereby improving the fire resistance of the beams 8 (inter-floor space 1). Furthermore, if fire-resistant coating on the beams 8 is not required, for example, an organic insulating material (e.g., polystyrene foam, phenolic foam, urethane foam, etc.) may be used for the insulating material 16.

[0022] In this embodiment, the heat insulating material 16 (including the first heat insulating material 16A and the second heat insulating material 16B in this example) preferably covers the entire longitudinal area of ​​the beam 8 (including the first beam 8A and the second beam 8B in this example). This allows the heat insulating material 16 to improve the heat insulation, airtightness, and fire resistance of the inter-floor space 1.

[0023] As shown in Figures 2 and 3, the insulating material 16 of this embodiment (in this example, including a first insulating material 16A and a second insulating material 16B) is composed of a first covering portion 16a, a second covering portion 16b, and a third covering portion 16c.

[0024] The first covering portion 16a of this embodiment extends along the beam underside 8d of the beam 8 (including the first beam 8A and the second beam 8B in this example) and covers the beam underside 8d. The second covering portion 16b of this embodiment extends upward from the end of the first covering portion 16a on the outdoor building side 2o and abuts against the insulating material 26 fixed to the beam 8. The outdoor building side 2o of the beam 8 is covered by this second covering portion 16b. The third covering portion 16c of this embodiment extends upward from the end of the first covering portion 16a on the indoor building side 2i and abuts against the underside of the floor material 9. The third covering portion 16c covers the indoor building side 2i of the beam 8 (the side facing the inter-story space 1). The first covering portion 16a, the second covering portion 16b, and the third covering portion 16c form the insulating material 16 in a U-shaped cross section. Such insulating material 16 can cover the entire area from the lower flange 13 to the upper flange 12 of the beam 8, thereby improving the thermal insulation, airtightness and fire resistance of the inter-floor space 1.

[0025] [Floor material] 1 to 3, the floor surface material 9 of this embodiment is supported by beams 8 (including a first beam 8A and a second beam 8B in this example). The floor surface material 9 of this embodiment forms the floor 7 of the upper floor portion 3 of the building.

[0026] The floor surface material 9 of this embodiment is formed, for example, in a plate shape (panel shape). The floor surface material 9 of this embodiment is configured to include foam concrete panels such as ALC. Such foam concrete panels are flame retardant, improving the fire resistance of the floor surface material 9 (inter-floor space 1). Note that the floor surface material 9 is not limited to an embodiment including foam concrete panels.

[0027] For example, particle board 14 or a floor finishing material (not shown) may be laminated on the floor surface material 9. In addition, it is preferable that a moisture-proof sheet (not shown) is laminated on the floor surface material 9 of this embodiment. Such a moisture-proof sheet can prevent moisture from flowing from the inter-story space 1 into the upper floor portion 3 of the building.

[0028] [Ceiling surface material] 1 to 3, the ceiling surface material 10 is disposed below the beams 8 (including the first beam 8A and the second beam 8B in this example). The ceiling surface material 10 of this embodiment forms the ceiling 6 of the lower floor 4 of the building.

[0029] The ceiling surface material 10 of this embodiment is formed, for example, in a plate shape (panel shape). The ceiling surface material 10 of this embodiment is supported by a plurality of joists 18.

[0030] The ceiling surface material 10 of this embodiment is configured to include a gypsum board 19. Such gypsum board 19 has flame retardancy, thereby improving the fire resistance of the ceiling surface material 10. Note that the ceiling surface material 10 is not limited to an embodiment including a gypsum board.

[0031] The ceiling surface material 10 of this embodiment may be laminated with, for example, a moisture-proof sheet (not shown). This allows the ceiling surface material 10 to prevent water vapor from the lower floors 4 of the building from entering the inter-floor space 1, for example, in winter. Furthermore, a ceiling finishing material (not shown) may be laminated on the ceiling surface material 10.

[0032] A sound-absorbing material 17 may be disposed on the ceiling surface material 10. Such sound-absorbing material 17 can suppress the transmission of noise between the upper floor portion 3 of the building and the lower floor portion 4 of the building. For example, a fiber-based sound-absorbing material (such as rock wool or glass wool) may be used as the sound-absorbing material 17, but is not limited to this.

[0033] The sound-absorbing material 17 of this embodiment is disposed on the building interior side 2i with respect to the beams 8 (including the first beams 8A and the second beams 8B in this example). This allows the sound-absorbing material 17 to be disposed on the ceiling surface material 10 without interfering with the beams 8.

[0034] [Rough veranda] The plurality of siding members 18 are for supporting the ceiling surface material 10. In this embodiment, the siding members 18 are formed with a generally rectangular cross section (as shown in FIG. 3), but are not limited to this form. In this embodiment, the plurality of siding members 18 extend along the second direction y. The plurality of siding members 18 are arranged at intervals in the first direction x, which is perpendicular to the second direction y.

[0035] The upper surface of the ceiling surface material 10 is fixed to the plurality of joists 18. As shown in Figures 1 and 2, the plurality of joists 18 in this embodiment are supported by joist support hardware 20, which will be described later.

[0036] [Frame material] As shown in Figures 1 to 3, in the structure of the inter-floor space 1 of this embodiment, frame members 21 are provided below the beams 8 (including a first beam 8A and a second beam 8B in this example) and arranged along the beams 8. The frame members 21 of this embodiment are configured to include a first frame member 21A (shown in Figures 1 and 2) and a second frame member 21B (shown in Figure 3). The first frame member 21A and the second frame member 21B of this embodiment are formed of a material that does not have air permeability (such as a metal material in this embodiment).

[0037] [1st frame material] 1 and 2, the first frame member 21A of this embodiment is disposed below and along the first beam 8A. The first frame member 21A of this embodiment is configured as a siding support hardware 20 that supports both sides of the multiple sidings 18 in the longitudinal direction.

[0038] The first frame material 21A (in this example, the siding support hardware 20) of this embodiment extends in a direction (first direction x) perpendicular to the longitudinal direction (second direction y) of the plurality of sidings 18. The first frame material 21A of this embodiment is fixed to a frame body 22 that supports the exterior wall 5, for example.

[0039] FIG. 4 is a perspective view showing a first frame member 21A. As shown in FIGS. 2 and 4, the first frame member 21A (in this example, the siding support hardware 20) of this embodiment includes an upper piece 21a, a lower piece 21b, and a vertical member 21c connecting them, and is formed with a U-shaped cross section. An opening 23 surrounded by the upper piece 21a, the lower piece 21b, and the vertical member 21c faces the building interior side 2i (shown in FIG. 2). Such a first frame member 21A can support a plurality of sidings 18 by inserting both longitudinal sides (ends) of the sidings 18 into the opening 23.

[0040] As shown in Figure 2, the upper piece 21a of this embodiment includes an end portion 21d that bends toward the insulating material 16 (in this example, the first insulating material 16A). The end portion 21d of this embodiment is inclined upward from the building exterior side 2o toward the building interior side 2i. Such end portion 21d helps to smoothly insert both sides (ends) of the multiple joists 18 into the opening 23.

[0041] [Second frame material] 3, the second frame member 21B of this embodiment is disposed below and along the second beam 8B. Therefore, the second frame member 21B extends parallel to the plurality of joists 18 (in the second direction y). The second frame member 21B of this embodiment is fixed to a frame body 22 that supports the exterior wall 5, for example.

[0042] Similar to the first frame member 21A (shown in FIG. 4), the second frame member 21B of this embodiment includes an upper piece 21a, a lower piece 21b, and vertical members 21c connecting them, and is formed with a U-shaped cross section. An opening 23 surrounded by the upper piece 21a, the lower piece 21b, and the vertical members 21c faces the building interior side 2i. The upper piece 21a of this embodiment includes an end portion 21d that bends toward the thermal insulation 16 (in this example, the second thermal insulation 16B).

[0043] The second frame material 21B is preferably configured with the same joist support hardware 20 as the first frame material 21A shown in Figures 2 and 4. This allows the first frame material 21A and the second frame material 21B to use a common component (joist support hardware 20), thereby reducing manufacturing costs.

[0044] [Top of frame] As shown in Figures 2 and 3, the upper ends 21t of the frame members 21 (in this example, the first frame member 21A and the second frame member 21B) of this embodiment are in contact with the insulating material 16. As shown in Figure 2, the upper ends 21t (end portions 21d) of the first frame member 21A of this embodiment are in contact with the first insulating material 16A. This allows the first frame member 21A and the first insulating material 16A to seal the gap between the floor surface material 9 of the upper floor portion 3 of the building and the ceiling surface material 10 of the lower floor portion 4 of the building along the vertical direction (first direction x) of the inter-floor space 1.

[0045] 3, the upper end 21t (end portion 21d) of the second frame member 21B in this embodiment is in contact with the second insulating material 16B. This allows the second frame member 21B and the second insulating material 16B to seal the gap between the floor surface material 9 of the upper floor portion 3 of the building and the ceiling surface material 10 of the lower floor portion 4 of the building along the vertical direction of the inter-story space 1 (second direction y).

[0046] As described above, in the structure of the inter-floor space 1 of this embodiment, the upper ends 21t of the frame materials 21 come into contact with the insulating material 16, thereby sealing the gap between the floor surface material 9 of the upper building floor portion 3 and the ceiling surface material 10 of the lower building floor portion 4. This allows the structure of the inter-floor space 1 to prevent outside air from flowing into the inter-floor space 1 from between the beams 8 and the ceiling surface material 10, thereby improving the airtightness of the inter-floor space 1. This improved airtightness makes it possible to prevent, for example, high-humidity outside air from flowing into the inter-floor space 1, thereby preventing condensation from forming on the duct piping of an air conditioner, ventilation device, or the like arranged in the inter-floor space 1.

[0047] Furthermore, when the upper floors 3 and the lower floors 4 of the building are configured as airtight spaces, the space within the building 2 can be configured as an airtight space, including the inter-floor space 1 formed between them. This allows the building 2 provided with the inter-floor space 1 to have improved air conditioning efficiency.

[0048] 2 and 3, the upper end 21t of the frame material 21 is preferably arranged so as to bite into the insulating material 16. This improves the adhesion between the upper end 21t of the frame material 21 and the insulating material 16, and further improves the airtightness of the inter-floor space 1.

[0049] In the inter-floor space 1 structure of this embodiment, it is preferable that the sound absorbing material 17 be in contact with the heat insulating material 16 (in this example, via a moisture-proof film 25). This further reduces the gap between the beam 8 and the ceiling surface material 10, further improving the airtightness of the inter-floor space 1. In this embodiment, the sound absorbing material 17 and the heat insulating material 16 (in this example, via a moisture-proof film 25) are in surface contact with each other, which further improves the airtightness.

[0050] [Moisture-proof film] The heat insulating material 16 (in this example, the first heat insulating material 16A and the second heat insulating material 16B) is preferably covered with a moisture-proof film 25 that extends from the contact portion 24 with the upper end 21t of the frame material 21 to the building interior side 2i. Such a moisture-proof film 25 can impart moisture-proof performance to the heat insulating material 16. This makes it possible to prevent moisture contained in the outside air from penetrating into the building interior side 2i of the inter-story space 1 through the heat insulating material 16.

[0051] The moisture-proof film 25 may include a rising portion 25B that rises toward the top of the beams 8 (in this example, the first beam 8A and the second beam 8B). With such a rising portion 25B, the heat insulating material 16 is covered with the moisture-proof film 25 from the contact portion 24 with the upper end 21t of the frame material 21 to the top of the beams 8, so that the intrusion of moisture from the heat insulating material 16 into the inter-story space 1 can be further suppressed.

[0052] The rising portion 25B of this embodiment extends upward from the first covering portion 16a of the insulating material 16 along the outside of the third covering portion 16c, and abuts against the underside of the floor surface material 9. This allows the rising portion 25B to cover the insulating material 16 (third covering portion 16c) from the contact portion 24 with the upper end 21t of the frame material 21 to the floor surface material 9, thereby further suppressing the penetration of moisture from the insulating material 16 into the inter-story space 1.

[0053] The moisture-proof film 25 is not particularly limited as long as it can provide moisture-proof performance to the heat insulating material 16. The moisture-proof film 25 of this embodiment may be made of polyethylene, for example.

[0054] [Structure of the inter-floor space (second embodiment)] In the structures of the inter-floor space 1 in the embodiments described above, the outer surfaces of the beams 8 arranged on the inter-floor space 1 side are covered with the heat insulating material 16, but the present invention is not limited to this. Fig. 5 is a cross-sectional view showing the structure of the inter-floor space 1 in another embodiment of the present invention.

[0055] In the structure of the inter-floor space 1 in this embodiment, only the underside 8d of the beam is covered with the insulating material 16. The upper end 21t of the frame material 21 is in contact with the insulating material 16. In this structure of the inter-floor space 1, as in the previous embodiments, the gap between the floor surface material 9 of the upper floor portion 3 of the building and the ceiling surface material 10 of the lower floor portion 4 of the building can be sealed, thereby improving airtightness. Furthermore, in this embodiment, since only the underside 8d of the beam is covered with the insulating material 16, workability is improved compared to the previous embodiments in which the outer surface of the beam 8 facing the inter-floor space 1 was covered. Note that in this embodiment, if a hole (not shown) is formed in the web 11 of the beam 8, it is preferable that the hole be sealed in order to maintain the airtightness of the inter-floor space 1.

[0056] In this embodiment, it is preferable to use a material with improved moisture resistance and airtightness for the insulation 16. As a result, in this embodiment, the moisture resistance and airtightness can be improved without covering the insulation 16 with a moisture-proof film 25 (shown in Figures 2 and 3) as in the previous embodiments, thereby improving workability. Note that the insulation 16 is not particularly limited as long as it has improved moisture resistance and airtightness. In the case where fire-resistant coating on the beams 8 is not required, rubber foam (e.g., EPDM rubber foam) can be used for the insulation 16 in this embodiment.

[0057] [Structure of Inter-floor Space (Third Embodiment)] In the above embodiments, the frame material 21 is exemplified as being composed of the first frame material 21A (shown in FIG. 2) and the second frame material 21B (shown in FIG. 3), but is not limited to this. For example, the frame material 21 may be composed of only one of the first frame material 21A and the second frame material 21B, depending on the arrangement of the beams 8 provided in the inter-floor space 1, or other frame materials (not shown) may be provided.

[0058] Although a particularly preferred embodiment of the present invention has been described in detail above, the present invention is not limited to the illustrated embodiment and can be modified and implemented in various ways.

[0059] [Note] The present invention includes the following aspects.

[0060] [Invention 1] A structure of an inter-story space of a building formed between a beam arranged along the periphery of the building, a floor surface material of an upper floor part of the building supported by the beam, and a ceiling surface material of a lower floor part of the building arranged below the beam, At least the underside of the beam facing the ceiling surface material is covered with a heat insulating material, A frame member is provided below the beam and arranged along the beam, The upper end of the frame material is in contact with the heat insulating material. Structure of inter-floor space. [Invention 2] The ceiling surface material is supported by a plurality of rough girders, the frame member includes a first frame member; A structure of an inter-floor space described in Invention 1, wherein the first frame material is a siding support hardware that supports both sides of the multiple sidings in the longitudinal direction. [Invention 3] The siding support hardware has a U-shaped cross section including an upper piece, a lower piece, and a vertical member connecting them, A structure for an inter-floor space as described in Invention 2, wherein the upper piece includes an end portion that bends toward the insulation material. [Invention 4] The frame material includes a second frame material extending parallel to the plurality of rough frames, The second frame member has a U-shaped cross section including an upper piece, a lower piece, and a vertical member connecting them, A structure for an inter-floor space as described in Invention 2, wherein the upper piece includes an end portion that bends toward the insulation material. [Invention 5] A structure of an inter-floor space described in Invention 4, wherein the second frame material is the same joist support hardware as the first frame material. [Invention 6] 6. A structure for an inter-floor space according to any one of claims 1 to 5, wherein the insulating material is a fiber-based insulating material. [Invention 7] A structure of an inter-floor space described in any one of present inventions 1 to 6, wherein a sound-absorbing material is arranged on top of the ceiling surface material, and the sound-absorbing material is in contact with the heat-insulating material. [Invention 8] A structure of an inter-floor space according to any one of the first to seventh inventions, wherein the insulating material is covered with a moisture-proof film extending from the contact portion with the upper end of the frame material to the inside of the building. [Invention 9] The structure of an inter-floor space according to invention 8, wherein the moisture-proof film includes a rising portion that rises toward the top of the beam. [Explanation of symbols]

[0061] First floor space 2. Building 3 Upper floors of the building 4 Lower floors of the building 8 beams 8d Beam bottom surface 9 Floor material 10 Ceiling surface materials 16. Insulation 21 Frame material 21t upper end

Claims

1. A structure of an inter-story space of a building formed between a beam arranged along the periphery of the building, a floor surface material of an upper floor part of the building supported by the beam, and a ceiling surface material of a lower floor part of the building arranged below the beam, At least the underside of the beam facing the ceiling surface material is covered with a heat insulating material, A frame member is provided below the beam and arranged along the beam, The upper end of the frame material is in contact with the heat insulating material, The ceiling surface material is supported by a plurality of rough girders, The frame material includes a second frame material extending parallel to the plurality of rough frames, The second frame member has a U-shaped cross section including an upper piece, a lower piece, and a vertical member connecting the upper piece and the lower piece, The upper piece includes an end portion that bends toward the insulation. Structure of inter-floor space.

2. The frame material includes a first frame material, The structure of the inter-floor space according to claim 1, wherein the first frame material is a siding support hardware that supports both sides of the plurality of sidings in the longitudinal direction.

3. The siding support hardware has a U-shaped cross section including an upper piece, a lower piece, and a vertical member connecting them, The structure of claim 2 , wherein the upper piece includes an end portion that bends toward the insulation.

4. A structure of an inter-floor space as described in claim 2, wherein the second frame material is the same siding support hardware as the first frame material.

5. A structure of an inter-floor space as described in claim 1 or 2, wherein the insulating material is a fiber-based insulating material.

6. A structure of an inter-floor space as described in claim 1 or 2, wherein sound-absorbing material is arranged on top of the ceiling surface material, and the sound-absorbing material is in contact with the insulating material.

7. A structure of an inter-story space of a building formed between a beam arranged along the periphery of the building, a floor surface material of an upper floor part of the building supported by said beam, and a ceiling surface material of a lower floor part of the building arranged below said beam, At least the underside of the beam facing the ceiling surface material is covered with a heat insulating material, A frame member is provided below the beam and arranged along the beam, The upper end of the frame material is in contact with the heat insulating material, The heat insulating material is covered with a moisture-proof film extending from the contact portion with the upper end of the frame material to the inside of the building. Structure of inter-floor space.

8. A structure of an inter-floor space as described in Claim 7, wherein the moisture-proof film includes a raised portion that rises toward the top of the beam.

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