Building

Abstract

To provide a building having excellent heat insulation properties.SOLUTION: A building 1 includes: an inner frame 3 provided, at a portion facing an outer wall 5, with a pair of first and second inner vertical members 711, 712 that both extend in the vertical direction and are adjacent to each other; an outer frame 4 located between the inner frame 3 and the outer wall 5, the outer frame being provided with a first outer vertical member 811 arranged alongside the outer wall 5 side of the first inner vertical member 711 and extending in the vertical direction, and a second outer structural member 812 arranged alongside the outer wall 5 side of the second inner vertical member 712 and extending in the vertical direction; and a first space S1 having a thickness of 200 mm or more and comprising an outer space S11 formed between the first and second outer vertical members 811, 812, and an inner space S11 formed between the first and second inner vertical members 711, 712. A first heat insulating board 91 having a thickness of 200 mm or more is disposed in the first space S1.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to buildings. [Background technology]

[0002] For example, as described in Patent Document 1, a frame construction method that combines pillars (vertical members) and beams (horizontal members) has been widely known as a housing construction method. In this type of frame construction, 4-inch or 3.5-inch pillars are generally used. Note that a 4-inch pillar is a pillar with a 120 mm square, and a 3.5-inch pillar is a pillar with a 105 mm square. Furthermore, one method of ensuring thermal insulation in such frame construction homes is the filling insulation method, in which insulation boards are placed inside the walls.

[0003] In recent years, high-insulation homes have been attracting a lot of attention due to the rising cost of energy such as electricity and gas, but with the infill insulation method, only insulation boards with a thickness of 120 mm or less can be used for 4-inch columns, and only insulation boards with a thickness of 105 mm or less can be used for 3.5-inch columns. In fact, currently, it is common to use insulation boards with a thickness of 80 mm to 120 mm. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 08-270073 Summary of the Invention [Problem to be solved by the invention]

[0005] However, if only insulation boards with a thickness of 120 mm or less can be used, it is difficult to achieve even higher insulation properties.

[0006] The present invention has been made in view of the above points, and aims to provide a building with excellent thermal insulation properties. [Means for solving the problem]

[0007] Such an object can be achieved by the following invention.

[0008] (1) In the part facing the exterior wall, an inner body including a pair of adjacent first and second inner vertical members that both extend vertically; an outer body located between the inner body and the outer wall, the outer body including a first outer vertical member arranged side by side on the outer wall side of the first inner vertical member and extending in a vertical direction, and a second outer vertical member arranged side by side on the outer wall side of the second inner vertical member and extending in a vertical direction; A building characterized by having an outer space formed between the first outer vertical member and the second outer vertical member, and an inner space formed between the first inner vertical member and the second inner vertical member, and a first space having a thickness of 200 mm or more.

[0009] (2) A building as described in (1) above, wherein the first inner vertical member, the second inner vertical member, the first outer vertical member and the second outer vertical member each have a thickness of 120 mm or more.

[0010] (3) A building as described in (1) above, having a first insulation board arranged in the first space and having a thickness of 200 mm or more and less than the thickness of the first space.

[0011] (4) The interior board material is further disposed on the indoor side of the inner skeleton, The thickness of the first insulation board is smaller than the thickness of the first space, The building according to (3) above, wherein a gap is formed between the interior board material and the first insulation board.

[0012] (5) The building described in (4) above, wherein the first insulation board is an outer insulation board arranged in the outer space and having the same thickness as the outer space, and an inner insulation board arranged in the inner space and having a thickness smaller than the thickness of the inner space.

[0013] (6) The outer insulation board is longer in the height direction than the inner insulation board, The lower end of the outer insulation board is located lower than the lower end of the inner insulation board, A building as described in (5) above, wherein the upper end of the outer insulation board is positioned higher than the upper end of the inner insulation board.

[0014] (7) The inner body has a first inner horizontal member located below the inner space, extending horizontally to connect the first inner vertical member and the second inner vertical member, and a second inner horizontal member located above the inner space, extending horizontally to connect the first inner vertical member and the second inner vertical member, The outer skeleton includes a first outer horizontal member arranged side by side on the outer wall side of the first inner horizontal member at the lower side of the outer space, extending horizontally to connect the first outer vertical member and the second outer vertical member, and a second outer horizontal member arranged side by side on the outer wall side of the second inner horizontal member at the upper side of the outer space, extending horizontally to connect the first outer vertical member and the second outer vertical member, The upper surface of the first outer cross member is located lower than the upper surface of the first inner cross member, The building described in (6) above, wherein the lower surface of the second outer cross member is positioned higher than the lower surface of the second inner cross member.

[0015] (8) In the part facing the underfloor, A pair of adjacent first and second horizontal members extending horizontally, A second space formed between the first cross member and the second cross member and having a thickness of 200 mm or more; A building as described in (1) above, having a second insulation board arranged in the second space and having a thickness of 200 mm or more.

[0016] (9) The structure further includes a floor panel material disposed above the first cross member and the second cross member, The thickness of the second insulation board is smaller than the thickness of the second space, The building according to (8) above, wherein a gap is formed between the floorboard material and the second insulation board.

[0017] (10) In the part facing the roof, a pair of third and fourth horizontal members that extend horizontally and are adjacent to each other; A third space formed between the third cross member and the fourth cross member and having a thickness of 200 mm or more; A building as described in (1) above, having a third insulation board placed in the third space and having a thickness of 200 mm or more. [Effects of the Invention]

[0018] According to the present invention, a space of 200 mm or more can be easily formed by the outer space formed by the outer skeleton and the inner space formed by the inner skeleton, and an insulation board of 200 mm or more can be placed in the space, resulting in a building with excellent insulation properties. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is a vertical cross-sectional view showing a building according to a first embodiment. [Figure 2] FIG. 1 is a cross-sectional view showing a wall structure of a building. [Figure 3] FIG. 1 is a cross-sectional view showing a wall structure of a building. [Figure 4] FIG. 2 is a vertical cross-sectional view showing the thermal insulation structure of the portion facing the exterior wall of the building. [Figure 5] FIG. 1 is a vertical cross-sectional view showing the thermal insulation structure of a portion of a building facing the underfloor. [Figure 6] FIG. 1 is a vertical cross-sectional view showing the thermal insulation structure of a portion of a building facing the roof. [Figure 7] FIG. 10 is a vertical cross-sectional view showing the foundation of the building of the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0020] First Embodiment Fig. 1 is a vertical cross-sectional view showing a building of a first embodiment. Fig. 2 and Fig. 3 are horizontal cross-sectional views showing the wall structure of the building. Fig. 4 is a vertical cross-sectional view showing the thermal insulation structure of a portion facing the exterior wall of the building. Fig. 5 is a vertical cross-sectional view showing the thermal insulation structure of a portion facing the underfloor of the building. Fig. 6 is a vertical cross-sectional view showing the thermal insulation structure of a portion facing the roof of the building.

[0021] The building 1 shown in FIG. 1 is a one-story wooden frame panel structure (a structure in which shear walls are formed with shear-bearing face materials) that uses the ventilated insulation WB construction method. Because the ventilated insulation WB construction method is publicly known, only a brief explanation will be given. The WB construction method involves providing ventilation layers on both the outside (outdoor side) and inside (indoor side) of the main insulation material. When the outside temperature is high (summer), outside air is introduced into the inner ventilation layer, and when the outside temperature is low (winter), outside air is not introduced into the inner ventilation layer. In other words, by switching the air flow between summer and winter, a comfortable indoor environment can be maintained throughout the year. Note that the building 1 shown in FIG. 1 is an example of a building of the present invention, and of course, the building of the present invention is not limited to this building. For example, the building may be two or more stories high, or may be a wooden frame structure (a structure in which shear walls are formed with diagonal braces).

[0022] The building 1 has a foundation 2, an inner body 3 fixed on the foundation 2, an outer body 4 fixed on the foundation 2 and arranged outside the inner body 3, an exterior wall 5 arranged on the outer periphery of the outer body 4, and a roof 6 arranged above the inner body 3 and the outer body 4.

[0023] The inner skeleton 3 mainly comprises a base 31 fixed to the rising edge of the foundation 2 with anchor bolts or the like, joists 32 arranged horizontally alongside the base 31, beams 33 supporting the joists 32 from below, a plurality of columns 34 erected on the base 31, beams 36 connecting the plurality of columns 34 at a predetermined height, a ridge beam 37 and purlins 38, and rafters 39 supported by the ridge beam 37, purlins 38, and beams 36 (eaves beams). Although not shown, the roof 6 is formed by fixing sheathing boards onto the rafters 39 and then fixing roofing materials onto the sheathing boards.

[0024] As shown in FIG. 2 , the columns 34 include continuous columns 341 arranged at the four corners of the building 1, pipe columns 342 arranged between adjacent pairs of continuous columns 341, and partition columns 343 arranged between adjacent pairs of pipe columns 342. Of these, the continuous columns 341 and pipe columns 342 are each 4-inch columns, that is, square timbers measuring 120 mm square. However, without being limited to this, for example, the continuous columns 341 and pipe columns 342 may each be 3.5-inch columns (105 mm square timbers) that are thinner than the 4-inch columns, or 4.5-inch columns (135 mm square timbers) that are thicker than the 4-inch columns. Furthermore, the partition columns 343 have the same thickness as the continuous columns 341 and pipe columns 342. That is, in this embodiment, the thickness of the partition columns 343 is 120 mm.

[0025] 1, of the structural members that make up the inner skeleton 3, the beams 33 and columns 34 are inner vertical members 71 that extend vertically, and the sills 31, joists 32, beams 36, ridge pole 37, and purlins 38 are inner horizontal members 72 that extend horizontally. However, the inner vertical members 71 are not limited to the above (columns 34) as long as they are structural members that extend vertically. Similarly, the inner horizontal members 72 are not limited to the above (sills 31, joists 32, beams 36, ridge pole 37, and purlins 38) as long as they are structural members that extend horizontally, and include, for example, window frames (window sills, lintels), joists, etc.

[0026] In the field of the present invention, the base 31 is sometimes not included in the cross members, but in this specification, for the sake of convenience, the base 31 is included in the inner cross member 72. In addition, in the field of the present invention, a distinction is sometimes made between the beam 36, where the part extending in the girder direction (the direction in which the ridge beam 37 extends) is called a "girder" and the part extending in the beam direction perpendicular to the girder is called a "beam," but in this specification, for the sake of convenience, the two are referred to as "beams" without any distinction between them. The same applies to the outer skeleton 4, which will be described next.

[0027] The above has described the inner body 3. Next, the outer body 4 will be described.

[0028] 1, the outer body 4 is located outside the inner body 3 described above, and is arranged so as to cover the outer periphery of the inner body 3. The outer body 4 has a base 41 fixed to the rising part of the foundation 2 with anchor bolts or the like, a plurality of columns 44 erected on the base 41, and beams 46 connecting the plurality of columns 44 at a predetermined height.

[0029] As shown in FIG. 2 , the columns 44 include continuous columns 441 arranged at the four corners of the building 1, pipe columns 442 arranged between adjacent pairs of continuous columns 441, and partition columns 443 arranged between adjacent pairs of pipe columns 442. Of these, the continuous columns 441 and pipe columns 442 are each 4-inch columns, that is, square timbers measuring 120 mm square. However, this is not limited to this. For example, the continuous columns 441 and pipe columns 442 may each be 3.5-inch columns, which are thinner than the 4-inch columns, or 4.5-inch columns, which are thicker than the 4-inch columns. Furthermore, the partition columns 443 have the same thickness as the continuous columns 441 and pipe columns 442. That is, in this embodiment, the thickness of the partition columns 443 is 120 mm.

[0030] Such an outer skeleton 4 is fixed to the inner skeleton 3 at predetermined locations using metal fittings or the like. By fixing the outer skeleton 4 to the inner skeleton 3, they become an integrated rigid body, thereby increasing the strength of the building 1.

[0031] 1, of the structural materials that make up the outer frame 4, the columns 44 are outer vertical members 81 that extend vertically, and the sills 41 and beams 46 are outer horizontal members 82 that extend horizontally. However, the outer vertical members 81 are not limited to the above (columns 44) as long as they are structural materials that extend vertically. Similarly, the outer horizontal members 82 are not limited to the above (sills 41, beams 46) as long as they are structural materials that extend horizontally, and include, for example, window frames (window sills, lintels), joists, etc.

[0032] The outer structure 4 has been described above. In the building 1, as shown in FIG. 1, a bearing surface material 11 is fixed to the outer peripheral surface of the outer structure 4. The outer surface of the bearing surface material 11 is covered with a waterproof sheet (not shown). Furthermore, an exterior wall 5 is fixed to the bearing surface material 11 from above the waterproof sheet via vertical furring strips 12. The gap G1 formed between the bearing surface material 11 and the exterior wall 5 by the vertical furring strips 12 constitutes a ventilation layer located on the outside (outdoor side) of the main insulation material (the first insulation board 91 described later) in the ventilated insulation WB construction method.

[0033] In addition, in the building 1, an interior board material 14 is fixed to the inner peripheral surface of the interior skeleton 3. The interior board material 14 is moisture-permeable, such as gypsum board. By using the moisture-permeable interior board material 14 in this manner, indoor moisture is discharged through the interior board material 14 into a gap G2, which will be described later.

[0034] Next, the thermal insulation structure of the building 1 will be described. As shown in Figures 3 and 4, in the portion of the skeleton facing the exterior wall 5, the inner skeleton 3 has a pair of horizontally adjacent first and second inner vertical members 711 and 712, and a pair of first and second inner horizontal members 721 and 722 that connect the first and second inner vertical members 711 and 712 at a predetermined vertical height. The inner skeleton 3 has a rectangular inner space S12 surrounded by the first and second inner vertical members 711 and 712 and the first and second inner horizontal members 721 and 722. As mentioned above, the thickness of the column 34 is 120 mm, so the thickness of the inner space S12 is also 120 mm.

[0035] The first and second inner vertical members 711, 712 are each inner vertical members 71, and in the example shown, the first inner vertical member 711 is a stud 343, and the second inner vertical member 712 is a pipe column 342. The first and second inner cross members 721, 722 are each inner cross members 72, and in the example shown, the first inner cross member 721 is a base 31, and the second inner cross member 722 is a beam 36. However, the combination of the first and second inner vertical members 711, 712 and the combination of the first and second inner cross members 721, 722 are not limited to this.

[0036] On the other hand, the outer body 4 has a pair of horizontally adjacent first outer vertical members 811 and second outer vertical members 812, and a pair of first outer horizontal members 821 and second outer horizontal members 822 that connect the first and second outer vertical members 811, 812 at a predetermined vertical height. The outer body 4 has a rectangular outer space S11 surrounded by the first and second outer vertical members 811, 812 and the first and second outer horizontal members 821, 822. As mentioned above, the thickness of the column 44 is 120 mm, so the thickness of the outer space S11 is also 120 mm.

[0037] The first and second outer vertical members 811, 812 are each outer vertical members 81, and in the example shown, the first outer vertical member 811 is a stud 443, and the second outer vertical member 812 is a pipe column 442. The first and second outer cross members 821, 822 are each outer cross members 82, and in the example shown, the first outer cross member 821 is a base 41, and the second outer cross member 822 is a beam 46. However, the combination of the first and second outer vertical members 811, 812 and the combination of the first and second outer cross members 821, 822 are not limited to this.

[0038] As shown in Fig. 3, the first outer vertical member 811 is arranged side by side on the outside (closer to the exterior wall 5) of the first inner vertical member 711 and is fixed to the first inner vertical member 711 with bolts (not shown). The second outer vertical member 812 is arranged side by side on the outside (closer to the exterior wall 5) of the second inner vertical member 712 and is fixed to the second inner vertical member 712 with bolts (not shown). As shown in Fig. 4, the first outer cross member 821 is arranged side by side on the outside (closer to the exterior wall 5) of the first inner cross member 721 and is fixed to the first inner cross member 721 via the foundation 2. The second outer cross member 822 is arranged side by side on the outside (closer to the exterior wall 5) of the second inner cross member 722 and is fixed to the second inner cross member 722 with bolts (not shown).

[0039] Therefore, the outer space S11 and the inner space S12 overlap at this location, forming a connected first space S1. As described above, the outer space S11 and the inner space S12 are each 120 mm thick, so the thickness of the first space S1 is 240 mm. By combining the inner body 3 and the outer body 4 to form the first space S1 in this way, the cost of the building 1 can be kept lower than when, for example, the first inner vertical member 711 and the first outer vertical member 811 are formed as a single column, the second inner vertical member 712 and the second outer vertical member 812 are formed as a single column, the first inner horizontal member 721 and the first outer horizontal member 821 are formed as a single base, and the second inner horizontal member 722 and the second outer horizontal member 822 are formed as a single beam to form the first space S1.

[0040] As shown in Figures 3 and 4, in the building 1, a foam plastic first insulation board 91 is fitted into the first space S1. The thickness of the first insulation board 91 is 200 mm or more. By making the thickness of the first insulation board 91 200 mm or more, the building 1 has excellent thermal insulation properties. Furthermore, the thickness of the first insulation board 91 is equal to or less than the thickness of the first space S1, that is, 240 mm or less. In this way, by making the thickness of the first insulation board 91 equal to or less than the thickness of the first space S1, the first insulation board 91 does not protrude from the first space S1, and the first insulation board 91 fits snugly within the first space S1.

[0041] The first insulating board 91 includes an outer insulating board 911 disposed in the outer space S11 and an inner insulating board 912 disposed in the inner space S12. The outer insulating board 911 has a thickness of 120 mm, the same as the outer space S11. In contrast, the inner insulating board 912 has a thickness of 80 mm, which is smaller than the thickness of the inner space S12. In other words, the first insulating board 91 has a total thickness of 200 mm, which is 40 mm smaller than the thickness of the first space S1. By forming the first insulating board 91 by stacking the outer insulating board 911 and the inner insulating board 912 in this way, a 200 mm-thick first insulating board 91 can be prepared inexpensively.

[0042] The first insulation board 91 is positioned closer to the load-bearing face material 11 so as to be in contact with the load-bearing face material 11. Although not shown, the boundary between the inner insulation board 912 and the inner body 3 is caulked from the inside surface of the inner insulation board 912 to seal the gap and improve airtightness (thermal insulation) and also to fix the first insulation board 91 to the body. The outer insulation board 911 and the inner insulation board 912 may be bonded together, or may be in contact with each other without being bonded together.

[0043] In this way, by positioning the first insulation board 91 closer to the load-bearing face material 11, a gap G2 of 40 mm is formed between the first insulation board 91 and the interior board material 14. In the ventilated insulation WB construction method, the gap G2 forms an air-permeable layer located inside (indoor side) of the main insulation material (first insulation board 91). Furthermore, for example, the gap G2 may be used as a space for routing electrical wiring, air conditioner refrigerant pipes, etc.

[0044] Furthermore, the thickness (vertical length) of the first outer horizontal member 821 is smaller than the thickness (vertical length) of the first inner horizontal member 721, and the upper surface of the first outer horizontal member 821 is located lower than the upper surface of the first inner horizontal member 721. Similarly, the thickness (vertical length) of the second outer horizontal member 822 is smaller than the thickness (vertical length) of the second inner horizontal member 722, and the lower surface of the second outer horizontal member 822 is located higher than the lower surface of the second inner horizontal member 722.

[0045] Therefore, the outer space S11 is longer in the vertical direction than the inner space S12, with its lower end located below the lower end of the inner space S12 and its upper end located above the upper end of the inner space S12. Correspondingly, the outer insulation board 911 is longer in the vertical direction than the inner insulation board 912, with its upper end located above the upper end of the inner insulation board 912 and its lower end located below the lower end of the inner insulation board 912. With this configuration, a larger area can be secured for the outer surface of the first insulation board 91 (the surface facing the outer wall 5), thereby improving the thermal insulation of the building 1.

[0046] The above describes the thermal insulation structure of the portion of the building 1 facing the exterior wall 5. However, the thermal insulation structure of this portion is not particularly limited. For example, the first insulation board 91 may be the same thickness as the first space S1, and the gap G2 may be omitted. Alternatively, for example, a spacer may be sandwiched between the outer insulation board 911 and the inner insulation board 912, separating them and forming an air layer therebetween. The first insulation board 91 may be composed of one insulation board, or may be composed of three or more insulation boards. The outer insulation board 911 may be the same length as the inner insulation board 912, or may be shorter than the inner insulation board 912.

[0047] Next, the heat insulating structure in the portion facing the underfloor area (foundation 2) of the building 1 will be described. In this portion, a pair of first and second horizontal members 731 and 732 are arranged adjacent to each other, as shown in Fig. 5. A rectangular second space S2 having a thickness (vertical length) of 200 mm or more is formed between the first and second horizontal members 731 and 732. In this embodiment, since the thicknesses (vertical lengths) of the first and second horizontal members 731 and 732 are both 210 mm, the thickness of the second space S2 is also 210 mm.

[0048] The first and second horizontal members 731 and 732 are each an inner horizontal member 72, and in the illustrated example, the first horizontal member 731 is the base 31 and the second horizontal member 732 is the joist 32. However, the combination of the first and second horizontal members 731 and 732 is not limited to this.

[0049] In the building 1, a second insulating board 92 made of foam plastic is fitted into the second space S2. The thickness of the second insulating board 92 is 200 mm or more. By making the thickness of the second insulating board 92 200 mm or more, the building 1 has excellent thermal insulation properties. Furthermore, the thickness of the second insulating board 92 is equal to or less than the thickness of the second space S2, that is, in this embodiment, equal to or less than 210 mm. In this way, by making the thickness of the second insulating board 92 equal to or less than the thickness of the second space S2, the second insulating board 92 does not protrude from the second space S2, and the second insulating board 92 fits snugly within the second space S2.

[0050] In particular, the thickness of the second insulation board 92 in this embodiment is 200 mm, which is 10 mm smaller than the thickness of the second space S2. The second insulation board 92 is positioned downward so that its underside is flush with the undersides of the first and second cross members 731, 732. The boundary between the second insulation board 92 and the frame is caulked from the upper side of the second insulation board 92, thereby sealing the gap and improving airtightness (thermal insulation) and fixing the second insulation board 92 to the frame.

[0051] By positioning the second insulation board 92 downward in this way, a gap G3 of 10 mm is formed between the second insulation board 92 and the floorboard material 15. Gap G3 is connected to gap G2, and in the ventilated insulation WB construction method, forms a ventilation layer located inside (indoor side) of the main insulation material (second insulation board 92). Furthermore, for example, gap G3 may be used as a space for routing electrical wiring, air conditioner refrigerant pipes, etc.

[0052] The above describes the thermal insulation structure of the portion of the building 1 facing the underfloor. However, the thermal insulation structure of this portion is not particularly limited. For example, the second insulating board 92 may be the same thickness as the second space S2, and the gap G3 may be omitted. Also, for example, the second insulating board 92 may be configured by stacking multiple insulating boards.

[0053] Next, we will explain the heat insulation structure in the portion facing the roof 6 of the building 1. In this portion, a pair of third and fourth horizontal members 733 and 734 are arranged adjacent to each other, as shown in Fig. 6. A third space S3 having a thickness (vertical length) of 200 mm or more is formed between the third and fourth horizontal members 733 and 734.

[0054] The third and fourth horizontal members 733 and 734 are each the inner horizontal members 72, and in the example shown, the third horizontal member 733 is the beam 36 (eaves beam) and the fourth horizontal member 734 is the purlin 38. However, the combination of the third and fourth horizontal members 733 and 734 is not limited to this.

[0055] In the building 1, a third insulating board 93 made of foam plastic is fitted into the third space S3. The thickness of the third insulating board 93 is 200 mm or more. By making the thickness of the third insulating board 93 200 mm or more, the building 1 has excellent thermal insulation properties. Furthermore, the thickness of the third insulating board 93 is equal to or less than the thickness of the third space S3. In this way, by making the thickness of the third insulating board 93 equal to or less than the thickness of the third space S3, the third insulating board 93 does not protrude from the third space S3, and the third insulating board 93 fits snugly within the space.

[0056] In particular, the third insulation board 93 in this embodiment has a thickness of 200 mm, and is positioned upward so that its upper surface contacts the rafters 39. The boundary between the third insulation board 93 and the frame is caulked from the underside of the third insulation board 93, thereby sealing these gaps and improving airtightness (thermal insulation), and also fixing the third insulation board 93 to the frame.

[0057] The above has described the thermal insulation structure of the portion facing the roof 6 of the building 1. However, the thermal insulation structure of this portion is not particularly limited. For example, the third insulation board 93 may be made up of multiple insulation boards.

[0058] The above describes the thermal insulation structure of building 1. In building 1, the entire area facing the outdoors (the area separating the inside and outside of building 1), excluding openings where windows and doors are located, has the thermal insulation structure described above. In other words, 200 mm first, second, and third insulation boards 91, 92, and 93 are placed on the entire sides, top, and bottom of building 1, excluding openings. This gives building 1 excellent thermal insulation properties.

[0059] The above has described the building 1. As mentioned above, this building 1 has an inner skeleton 3 that includes a pair of adjacent first inner vertical members 711 and second inner vertical members 712 that both extend vertically in the portion facing the exterior wall 5, an outer skeleton 4 that is located between the inner skeleton 3 and the exterior wall 5 and includes a first outer vertical member 811 and a second outer vertical member 812 that are arranged side by side on the exterior wall 5 side of the first inner vertical member 711 and extend vertically, and a second outer vertical member 812 that is arranged side by side on the exterior wall 5 side of the second inner vertical member 712 and extend vertically, an outer space S11 formed between the first outer vertical member 811 and the second outer vertical member 812, and an inner space S12 formed between the first inner vertical member 711 and the second inner vertical member 712, and a first space S1 that is 200 mm or more thick. With this type of building 1, a first space S1 of 200 mm or more can be formed inexpensively by combining the inner skeleton 3 and the outer skeleton 4. Then, by placing a heat insulating board of sufficient thickness within this first space S1, the building 1 becomes highly heat-insulating.

[0060] As described above, the first inner vertical member 711, the second inner vertical member 712, the first outer vertical member 811, and the second outer vertical member 812 each have a thickness of 120 mm or more. With this configuration, a first space S1 having a thickness of 240 mm or more can be formed, and a first insulation board 91 having a thickness of 200 mm can be easily placed in the first space S1. This results in a building 1 with high thermal insulation properties.

[0061] As described above, the building 1 has a first insulation board 91 that is placed in the first space S1 and has a thickness of 200 mm or more and equal to or less than the thickness of the first space S1. With this configuration, the first insulation board 91 is sufficiently thick, and the building 1 has high thermal insulation properties.

[0062] As described above, the building 1 further has an interior board material 14 arranged on the indoor side of the inner skeleton 3, and the thickness of the first insulation board 91 is smaller than the thickness of the first space S1, and a gap G2 is formed between the interior board material 14 and the first insulation board 91. With this configuration, the gap G2 can form an air-permeable layer located inside (on the indoor side of) the main insulation material (first insulation board 91) in the ventilated insulation WB construction method.

[0063] As described above, the first insulating board 91 has an outer insulating board 911 that is disposed in the outer space S11 and has the same thickness as the outer space S11, and an inner insulating board 912 that is disposed in the inner space S12 and has a thickness smaller than that of the inner space S12. By stacking a plurality of insulating boards to form the first insulating board 91 in this way, a thick first insulating board 91 can be prepared at low cost.

[0064] As described above, the outer insulation board 911 is longer in the height direction than the inner insulation board 912, and the lower end of the outer insulation board 911 is located below the lower end of the inner insulation board 912, and the upper end of the outer insulation board 911 is located above the upper end of the inner insulation board 912. With this configuration, a larger area can be secured for the outer surface of the first insulation board 91 (the surface facing the exterior wall 5), thereby improving the thermal insulation of the building 1.

[0065] As described above, the inner body 3 includes a first inner horizontal member 721 located below the inner space S12, extending horizontally to connect the first inner vertical member 711 and the second inner vertical member 712, and a second inner horizontal member 722 located above the inner space S12, extending horizontally to connect the first inner vertical member 711 and the second inner vertical member 712. The outer body 4 includes a first outer horizontal member 821 located next to the first inner horizontal member 721 on the outer wall 5 side of the lower outer space S11, extending horizontally to connect the first outer vertical member 811 and the second outer vertical member 812, and a second outer horizontal member 822 located next to the second inner horizontal member 722 on the outer wall 5 side of the upper outer space S11, extending horizontally to connect the first outer vertical member 811 and the second outer vertical member 812. The upper surface of the first outer horizontal member 821 is located lower than the upper surface of the first inner horizontal member 721, and the lower surface of the second outer horizontal member 822 is located higher than the lower surface of the second inner horizontal member 722. With this simple configuration, the lower end of the outer insulation board 911 can be located lower than the lower end of the inner insulation board 912, and the upper end of the outer insulation board 911 can be located higher than the upper end of the inner insulation board 912.

[0066] As described above, the building 1 includes a pair of adjacent first and second horizontal members 731 and 732 that extend horizontally in the portion facing the underfloor, a second space S2 that is formed between the first and second horizontal members 731 and 732 and has a thickness of 200 mm or more, and a second insulation board 92 that is disposed in the second space S2 and has a thickness of 200 mm or more. This configuration results in a sufficiently thick second insulation board 92, and the building 1 has high thermal insulation properties.

[0067] As described above, the building 1 further includes flooring 15 disposed above the first horizontal member 731 and the second horizontal member 732. The thickness of the second insulation board 92 is smaller than the thickness of the second space S2, and a gap G3 is formed between the flooring 15 and the second insulation board 92. With this configuration, the gap G3 can form an air-permeable layer located inside (on the indoor side of) the main insulation (second insulation board 92) in the ventilated insulation WB construction method.

[0068] As described above, the building 1 includes a pair of adjacent third and fourth horizontal members 733 and 734 that extend horizontally in the portion facing the roof 6, a third space S3 that is formed between the third and fourth horizontal members 733 and 734 and has a thickness of 200 mm or more, and a third insulation board 93 that is disposed within the third space S3 and has a thickness of 200 mm or more. This configuration results in a sufficiently thick third insulation board 93, and the building 1 has high thermal insulation properties.

[0069] Second Embodiment FIG. 7 is a vertical cross-sectional view showing a foundation portion of a building according to the second embodiment.

[0070] The building 1 of this embodiment is the same as the first embodiment described above, except for the configuration of the foundation 2. In the following explanation, the differences between this embodiment and the previous embodiment will be mainly described, and explanations of similar points will be omitted. In addition, in the drawings of this embodiment, the same components as those in the previous embodiment will be assigned the same reference numerals.

[0071] In the first embodiment described above, both sills 31 and 41 were arranged on the rising part of the foundation 2, but in this embodiment, as shown in Fig. 7, the inner sill 31 is supported by the beams 33 rather than the foundation 2. With this configuration, the volume of the rising part of the foundation 2 is smaller than in the first embodiment described above, and therefore the cost of the building 1 can be kept low.

[0072] The second embodiment can also achieve the same effects as the first embodiment described above.

[0073] While the building of the present invention has been described above based on the illustrated embodiment, the present invention is not limited to this, and the configuration of each part can be replaced with any configuration having a similar function. Also, any other components may be added. Furthermore, each embodiment may be combined as appropriate. [Explanation of symbols]

[0074] 1...building, 11...bearing surface material, 12...vertical furring strip, 14...interior board material, 15...floor board material, 2...foundation, 3...interior frame, 31...base, 32...joist, 33...beam, 34...column, 341...through column, 342...tubular column, 343...stud, 36...beam, 37...ridge beam, 38...purlin, 39...rafter, 4...exterior frame, 41...base, 44...column, 441...through column, 442...tubular column, 443...stud, 46...beam, 5...exterior wall, 6...roof, 71...interior vertical member, 711...first interior vertical member, 712...second interior vertical member, 72...interior horizontal member, 721...first interior horizontal member, 722... Second inner horizontal member, 731...first horizontal member, 732...second horizontal member, 733...third horizontal member, 734...fourth horizontal member, 81...outer vertical member, 811...first outer vertical member, 812...second outer vertical member, 82...outer horizontal member, 821...first outer horizontal member, 822...second outer horizontal member, 91...first insulation board, 911...outer insulation board, 912...inner insulation board, 92...second insulation board, 93...third insulation board, G1...gap, G2...gap, G3...gap, S1...first space, S11...outer space, S12...inner space, S2...second space, S3...third space

Claims

1. In the area facing the exterior wall, an inner body including a pair of adjacent first and second inner vertical members that both extend vertically; an outer body located between the inner body and the outer wall, the outer body including a first outer vertical member arranged side by side on the outer wall side of the first inner vertical member and extending in a vertical direction, and a second outer vertical member arranged side by side on the outer wall side of the second inner vertical member and extending in a vertical direction; A building characterized by having an outer space formed between the first outer vertical member and the second outer vertical member, and an inner space formed between the first inner vertical member and the second inner vertical member, and a first space having a thickness of 200 mm or more.

2. 2. The building of claim 1, wherein the first inner vertical member, the second inner vertical member, the first outer vertical member, and the second outer vertical member each have a thickness of 120 mm or more.

3. The building according to claim 1, further comprising a first insulation board disposed in the first space and having a thickness of 200 mm or more and less than the thickness of the first space.

4. The interior board material is further disposed on the indoor side of the inner skeleton, The thickness of the first insulation board is smaller than the thickness of the first space, The building according to claim 3, wherein a gap is formed between the interior board material and the first insulation board.

5. The building described in claim 4, wherein the first insulation board comprises an outer insulation board arranged in the outer space and having the same thickness as the outer space, and an inner insulation board arranged in the inner space and having a thickness smaller than the thickness of the inner space.

6. The outer insulation board is longer in the height direction than the inner insulation board, The lower end of the outer insulation board is located lower than the lower end of the inner insulation board, The building according to claim 5, wherein the upper end of the outer insulation board is positioned higher than the upper end of the inner insulation board.

7. the inner body includes a first inner horizontal member located below the inner space, extending horizontally to connect the first inner vertical member and the second inner vertical member, and a second inner horizontal member located above the inner space, extending horizontally to connect the first inner vertical member and the second inner vertical member, The outer skeleton includes a first outer horizontal member arranged side by side on the outer wall side of the first inner horizontal member at the lower side of the outer space, extending horizontally to connect the first outer vertical member and the second outer vertical member, and a second outer horizontal member arranged side by side on the outer wall side of the second inner horizontal member at the upper side of the outer space, extending horizontally to connect the first outer vertical member and the second outer vertical member, The upper surface of the first outer horizontal member is located lower than the upper surface of the first inner horizontal member, The building according to claim 6, wherein the lower surface of the second outer horizontal member is positioned higher than the lower surface of the second inner horizontal member.

8. In the area facing the underfloor, a pair of adjacent first and second horizontal members that both extend horizontally, A second space formed between the first cross member and the second cross member and having a thickness of 200 mm or more; The building according to claim 1, further comprising: a second insulation board disposed in the second space and having a thickness of 200 mm or more.

9. The structure further includes a floor panel material disposed above the first cross member and the second cross member, The thickness of the second insulation board is smaller than the thickness of the second space, The building according to claim 8, wherein a gap is formed between the floorboard material and the second insulation board.

10. In the area facing the roof, a pair of third and fourth horizontal members that extend horizontally and are adjacent to each other; A third space formed between the third cross member and the fourth cross member and having a thickness of 200 mm or more; The building according to claim 1, further comprising: a third insulation board disposed in the third space and having a thickness of 200 mm or more.

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