Building insulation structure

Abstract

This invention provides a building insulation structure that allows for overall weight reduction of the building while easily and inexpensively enhancing both thermal insulation and structural strength. [Solution] The thermal insulation structure of the building 300 is such that a first building structural material (e.g., a first wall panel 10) and a second building structural material (e.g., a second wall panel 20) are erected on the structural frame of the building 300, and the first building structural material (first wall panel 10) and the second building structural material (second wall panel 20) are arranged within a wall body that forms a wall line in a straight line in plan view, and are spaced apart from each other along the thickness direction of the wall body. There is a layer without thermal insulation between the first building structural material (first wall panel 10) and the second building structural material (second wall panel 20). The first building structural material (first wall panel 10) and the second building structural material (second wall panel 20) are building wood panels, and the building wood panels have a hollow structure in which facing material is attached to both sides or one side of a frame body in which vertical and horizontal frame members are assembled in a rectangular shape.

Description

Technical Field

[0001] The present invention relates to a heat insulation structure of a building.

Background Art

[0002] In recent years, the industrialization of building construction such as houses has progressed. For example, a panel method of constructing a house by prefabricating components such as walls, floors, and roofs into panels and assembling these panels at the construction site has been partially adopted. Such a wall panel is formed by attaching plywood to both sides of a frame body assembled with vertical and horizontal frame members in a square frame shape. In addition, a wall panel filled with a heat insulating material in the space between the frame body and the plywood to enhance heat insulation has been disclosed (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in a building using such a wall panel filled with a heat insulating material, when further enhancing the heat insulation, methods such as increasing the thickness of the wall panel, increasing the cross-section of the wall panel, increasing the amount of the heat insulating material to be filled, or performing external heat insulation are known. However, when increasing the thickness of the wall panel, there are manufacturing problems such as the need to construct a new wall panel with a different thickness, resulting in high costs, an increase in the weight of the entire building, and the need to allocate new production equipment.

[0005] The present invention has been made in view of the above circumstances, and an object thereof is to provide a heat insulation structure of a building that can reduce the weight of the entire building and easily enhance the heat insulation and structural strength at low cost. [Means for solving the problem]

[0006] The means to solve the above problems are: The building's insulation structure, The first building structural member and the second building structural member are erected on the structural frame of the building. The first building structural member and the second building structural member are arranged within a wall body that forms a straight wall line in a plan view, and are spaced apart from each other along the thickness direction of the wall body. There is a layer without insulation between the first building structural material and the second building structural material. The first building structural material and the second building structural material are wooden panels for construction. The aforementioned wooden building panel is characterized in that a frame is assembled in a rectangular shape from vertical and horizontal frame members, with facing material attached to one or both sides of the frame, and has a hollow interior. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a building construction method that can easily and inexpensively enhance thermal insulation and structural strength while reducing the overall weight of the building. [Brief explanation of the drawing]

[0008] [Figure 1] This is a schematic perspective view of the thermal insulation structure of a building according to the first embodiment of the present invention. [Figure 2] Figure 1 is a side cross-sectional view of the building's thermal insulation structure. [Figure 3] (a) is a front view of the first and second wall panels, (b) is a side section view of the first and second wall panels, and (c) is a plan cross view of the first and second wall panels. [Figure 4] This is a modified version of Figure 3, where (a) is a front view of the first and second wall panels, (b) is a side section view of the first and second wall panels, and (c) is a plan cross view of the first and second wall panels. [Figure 5] This is a schematic perspective view of a building insulation structure according to a second embodiment of the present invention. [Figure 6] It is a side sectional view of the heat insulation structure of the building in FIG. 5. [Figure 7] It is a side sectional view of the heat insulation structure of the building according to the third embodiment of the present invention. [Figure 8] It is an explanatory view of the location where the heat insulation structure of the building of the present invention is applied. [Figure 9] It is a schematic perspective view showing the construction method of the building to which the heat insulation structure of the present invention is applied. [Figure 10] It is a schematic perspective view showing the construction method of the building to which the heat insulation structure of the present invention is applied. [Figure 11] It is a schematic perspective view showing the construction method of the building to which the heat insulation structure of the present invention is applied. [Figure 12] It is a schematic perspective view showing the construction method of the building to which the heat insulation structure of the present invention is applied. [Figure 13] It is a modified example shown in FIGS. 9 to 12 and is a schematic perspective view showing the construction method of the building. [Figure 14] It is a modified example shown in FIGS. 9 to 12 and is a schematic perspective view showing the construction method of the building. [Figure 15] It is a modified example shown in FIGS. 9 to 12 and is a schematic perspective view showing the construction method of the building. [Figure 16] It is a modified example shown in FIGS. 9 to 12 and is a schematic perspective view showing the construction method of the building. [Figure 17] It is a modified example shown in FIGS. 9 to 12 and is a schematic perspective view showing the construction method of the building. [Figure 18] It is a view showing the construction method of a five-story building. [Figure 19] It is a view showing the construction method of a five-story building. [Figure 20] It is a side sectional view showing a reference example of the heat insulation structure applicable to the building according to the present invention. [Figure 21] It is a side sectional view showing a reference example of the heat insulation structure applicable to the building according to the present invention. [Figure 22] It is a plan sectional view of the heat insulation structure of the building in FIG. 1.

Embodiments for Carrying Out the Invention

[0009] Embodiments of the present invention will be described below with reference to the drawings. However, the actual embodiments described below will not be While the embodiments are subject to various technically preferable limitations for carrying out the present invention, the technical scope of the present invention is not limited to the following embodiments and illustrated examples. The directions in the following embodiments and illustrated examples are set solely for explanatory purposes.

[0010] [Building insulation structure] <First Embodiment> Figure 1 is a schematic perspective view of the building's thermal insulation structure according to the first embodiment of the present invention, and Figure 2 is a side cross-sectional view of the building's thermal insulation structure. As shown in Figures 1 and 2, the building 300 has a first lower-floor structural member 10 erected on a foundation 50, and a second lower-floor structural member 20 erected on the outside of the first lower-floor structural member 10. These first and second building structural members 10 and 20 are arranged within a single wall body that forms a straight wall line in a plan view, and are spaced apart from each other along the thickness direction of the wall body. The space between the spaced-apart first and second building structural members 10 and 20 is an insulating layer. Furthermore, on the foundation 50, the first building structural member 30 of the upper floor is erected on the first building structural member 10 of the lower floor, and the second building structural member 40 of the upper floor is erected on the second building structural member 20 of the lower floor. These first building structural members 30 and second building structural members 40 are also arranged within a single wall body that forms a wall line in a straight line in plan view, and are arranged side by side spaced apart from each other along the thickness direction of the wall body. The space between the first building structural member 20 and the second building structural member 40 is also provided as an insulating layer.

[0011] As the first and second building structural members 10, 20, 30, and 40, for example, wooden panels used in construction such as columns used in wooden frame construction, 2x4 panels used in 2x4 construction, or wall panels used in panel construction are used, and it is preferable to use wooden panels used in construction in particular because they facilitate on-site construction. The following describes the case where the first building structural material 10,30 is applied to the first wall panel 10,30, and the second building structural material 20,40 is applied to the second wall panel 20,40.

[0012] Figures 3 and 4 show the first and second wall panels, where Figures 3(a) and 4(a) are front views of the first and second wall panels, Figures 3(b) and 4(b) are side cross-sectional views of the first and second wall panels, and Figures 3(c) and 4(c) are plan cross-sectional views of the first and second wall panels. The first and second wall panels 10 and 20 of the lower floor are constructed by assembling vertical and horizontal frame members in a rectangular shape, and by assembling auxiliary cross members vertically and horizontally inside the rectangular frame to form a frame body 11 and 21, and by attaching facing materials 12 and 22 to both sides or one side of this frame body 11 and 21, and have a hollow internal structure. Furthermore, it is preferable that the hollow internal portion is filled with insulating material 13 and 23. In Figures 3 and 4, the first and second wall panels 10 and 20 of the lower floor are shown, but the first and second wall panels 30 and 40 of the upper floor have a similar configuration. Also, the first and second wall panels 10, 20, 30, and 40 shown in Figures 1 to 4 are those with facing materials 12, 22, 32, and 42 attached to both sides.

[0013] Examples of the aforementioned insulation materials 13 and 23 include fibrous insulation materials 13a and 23a such as glass wool and rock wool (see Figure 3), and foamed resin insulation materials 13b and 23b such as phenolic foam and polyethylene foam (see Figure 4). In particular, fibrous insulation materials are suitably used in the first wall panel 10 located on the inside of the building 300 where wiring work is required, while foamed resin insulation materials are suitably used in the second wall panel 20 located on the outside of the building 300 due to their high thermal insulation performance.

[0014] Foundation 50 is made of reinforced concrete, and anchor bolts are spaced along its length. A bolt 51 (omitted in Figure 1) is embedded. The anchor bolt 51 protrudes upward from the upper end surface of the foundation 50. Furthermore, a ventilation base ring 52 is interposed between the foundation 50 and the first and second wall panels 10 and 20 of the lower floor to allow outside air to enter the space beneath the floor.

[0015] The side edges of the lower floor panel 60 are placed on the ventilation base 52. Similar to the first and second wall panels 10 and 20 described above, the floor panel 60 is constructed by assembling vertical and horizontal frame members in a rectangular shape, and by assembling auxiliary cross members vertically and horizontally inside the rectangular frame to form a frame body 61. A facing material 62 is attached to one or both sides of this frame body 61, and it has a hollow internal structure. Furthermore, it is preferable that the hollow internal portion is filled with the aforementioned insulation material 63. Note that the lower floor panel 60 shown in Figures 1 and 2 (and the upper floor panel 70 described later) has the facing material 62 (72) attached only to the top surface.

[0016] Furthermore, a half-base 53 is placed on the outside of the side end of the floor panel 60 of the lower floor on the ventilation base 52. In addition, a lower connecting member 80 is placed on the ventilation base 52 between the side end of the floor panel 60 of the lower floor and the half-base 53.

[0017] The lower connecting member 80 has a portal shape when viewed from the side. The lower connecting member 80 consists of a first connecting portion 81 located at the lower end of the first wall panel 10 of the lower floor and outside the side end of the floor panel 60 of the lower floor, a second connecting portion 82 located at the lower end of the second wall panel 20 of the lower floor and inside the half foundation 53, and a third connecting portion 83 which is a plate material that connects the upper ends of the first and second connecting portions 81 and 82. The first connecting portion 81 and the second connecting portion 82 are spaced apart along the thickness direction of the wall, and insulation material 84 is filled in this spaced-apart region. The first to third connecting portions 81 to 83 are long plate-like in shape along the foundation 50, and these first to third connecting portions 81 to 83 are formed integrally. Thus, the lower connecting member 80 consists of first to third connecting parts 81 to 83 and has a portal shape when viewed from the side. Therefore, compared to a connecting member with a rectangular shape when viewed from the side (for example, a solid beam), it is lighter and has improved thermal insulation.

[0018] In this example, the lower connecting member 80 is formed by integrally creating long, plate-shaped first to third connecting sections 81 to 83 along the foundation 50. However, instead of being long, it may be formed by integrally creating short, plate-shaped first to third connecting sections, and multiple such lower connecting members 80 may be scattered along the foundation 50.

[0019] The lower connecting member 80 is placed on the ventilation base ring 52, between the side end of the lower floor panel 60 and the half base 53. The upper surface of the lower floor panel 60, the upper surface of the third connecting portion 83 of the lower connecting member 80, and the upper surface of the half base 53 are substantially flush. Preferably, the lower connecting member 80 is bonded to the side end of the lower floor panel 60 and the half base 53 with adhesive, but screws may also be used in combination.

[0020] Then, the first wall panel 10 of the lower floor is placed on the lower connecting member 80 and the side end of the floor panel 60 via adhesive (screws may also be used; the same applies hereinafter), and the second wall panel 20 of the lower floor is placed on the lower connecting member 80 and the half base 53 via adhesive. The lower horizontal frame members constituting the first and second wall panels 10 and 20 of the lower floor each have through holes (not shown) for inserting anchor bolts 51. Of the anchor bolts 51 embedded in the foundation 50, the inner anchor bolts 51 have their upper parts inserted through the ventilation base ring 52, and further inserted between the lower connecting member 80 and the side end face of the floor panel 60, and a tightening nut N is screwed onto the lower end of the first wall panel 10 via a washer (not shown). Similarly, of the anchor bolts 51 embedded in the foundation 50, the outer anchor bolts 51 have their upper parts inserted through the ventilation base ring 52, and further inserted between the lower connecting member 80 and the side end face of the floor panel 60, and a tightening nut N is screwed onto the lower end of the first wall panel 10 via a washer (not shown). The member 80 is inserted between the half-base 53, and a tightening nut N is screwed onto the lower end of the second wall panel 20 via a washer (not shown). In this way, the first and second wall panels 10 and 20 of the lower floor, which are erected spaced apart on the foundation 50, are connected via the lower connecting member 80.

[0021] Furthermore, it is preferable that the space between the first wall panel 10 and the second wall panel 20 of the lower floor be made of an insulating layer and that insulating material 100 (omitted in Figure 1) be provided, as this can further improve the thermal insulation performance. Examples of insulation material 100 include fibrous insulation materials such as glass wool and rock wool, and foamed resin insulation materials such as phenolic foam and polyethylene foam, similar to the insulation materials 13 and 23 that are filled into the first and second wall panels 10 and 20 described above. Furthermore, by appropriately adjusting the distance between the first wall panel 10 and the second wall panel 20, the amount of insulation material 100,200 can be easily adjusted.

[0022] Meanwhile, the upper building structural members 70 are placed on top of the first wall panel 10 of the lower floor. As the upper building structural members 70, for example, beams used in wooden frame construction or wooden building panels such as floor panels and roof panels used in panel construction can be used. The following explanation will describe the case where the upper building structural members 70 are the floor panels 70 of the upper floor.

[0023] A girder 54 is placed on top of the second wall panel 20 of the lower floor. Also, an upper connecting member 90 is placed between the side end of the floor panel 70 of the upper floor and the girder 54 on top of the first wall panel 10 and the second wall panel 20 of the lower floor.

[0024] The upper connecting member 90, like the lower connecting member 80 described above, has a portal shape when viewed from the side. The upper connecting member 90 consists of a first connecting portion 91 located at the upper end of the first wall panel 10 of the lower floor and outside the side end of the floor panel 70 of the upper floor, a second connecting portion 92 located at the upper end of the second wall panel 20 of the lower floor and inside the girder 54, and a third connecting portion 93 that connects the upper ends of the first and second connecting portions 91 and 29. The first to third connecting portions 91 to 93 are long, plate-like structures along the foundation 50, and these first to third connecting portions 91 to 93 are formed as a single unit.

[0025] Furthermore, the upper connecting member 90 may also be formed by integrally creating short, plate-shaped first to third connecting parts 91 to 93, and multiple such upper connecting members 90 may be scattered along the foundation 50 (see Figure 22). This allows the insulation material 100, 200 to be continuous across the upper and lower floors, thereby further enhancing insulation.

[0026] The upper connecting member 90 is placed on the first and second wall panels 10 and 20 of the lower floor, between the side end of the floor panel 70 of the upper floor and the girder 54. The upper surface of the floor panel 70 of the upper floor, the upper surface of the third connecting portion 93 of the upper connecting member 90, and the upper surface of the girder 54 are substantially flush. Preferably, the upper connecting member 90 is bonded to the first wall panel 10 of the lower floor, the second wall panel 20, the side end of the floor panel 70 of the upper floor, and the girder 54 with adhesive.

[0027] Furthermore, the first wall panel 30 of the upper floor (omitted in Figure 1) is placed on top of the upper connecting member 90 and the side end of the upper floor panel 70, and the second wall panel 40 of the upper floor (omitted in Figure 1) is placed on top of the upper connecting member 90 and the girder 54. The lower horizontal frame members that make up the first and second wall panels 30 and 40 of the upper floor each have through holes (not shown) formed therein for inserting the girder bolts 55 (omitted in Figure 1) that connect the wall panels 10 and 20 of the lower floor to the wall panels 30 and 40 of the upper floor.

[0028] Furthermore, a connecting bolt 55, which is screwed onto the upper end of the first wall panel 10 of the lower floor with a tightening nut N via a washer (not shown), has its upper part inserted between the upper connecting member 90 and the side end face of the floor panel 70 of the upper floor, and a tightening nut N is screwed onto the lower end of the first wall panel 30 of the upper floor with a washer (not shown). Similarly, a girder bolt 55, which is screwed onto the upper end of the second wall panel 40 of the lower floor with a tightening nut N via a washer (not shown), has its upper part inserted between the upper connecting member 90 and the girder 54, and a tightening nut N is screwed onto the lower end of the second wall panel 40 of the upper floor with a washer (not shown). In this way, the first and second wall panels 10 and 20 of the lower floor, which are erected spaced apart on the foundation 50, and the first and second wall panels 30 and 40 of the upper floor, which are erected spaced apart on the first and second wall panels 10 and 20 of the lower floor, are connected by the lower connecting member 80 and the upper connecting member 90.

[0029] Furthermore, at the upper ends of the wall panels 30 and 40 on the upper floor, similar to the upper ends of the wall panels 10 and 20 on the lower floor, the first and second wall panels 30 and 40 on the upper floor are connected to upper building structural members (for example, floor panels or roof panels on an even higher floor) that are placed on the upper ends of the wall panels 30 and 40 on the upper floor via upper connecting members (not shown). Furthermore, it is preferable that the insulation material 200 is also filled between the first and second wall panels 30 and 40 of the upper floor. In addition, although not shown, the insulation material may also be filled between the first and second connecting portions 91 and 92 of the upper connecting member 90.

[0030] According to the above embodiment, the first wall panels (first wall panel 10 on the lower floor, first wall panel 30 on the upper floor) erected on the foundation 50, and the second wall panels (second wall panel 20 on the lower floor, second wall panel 40 on the upper floor) arranged outside the first wall panels 10, 30, are spaced apart from each other along their thickness direction. As a result, an insulating layer can be created between the first wall panels 10, 30 and the second wall panels 20, 40, providing excellent thermal insulation. Therefore, for example, when providing an insulating layer inside a single wall panel, it was necessary to increase the thickness of the wall panel in order to increase the thickness of the insulating layer. However, in the present invention, by using two existing wall panels and appropriately adjusting the spacing between the first and second wall panels 10, 20, 30, and 40, the thickness of the insulating layer can be easily changed. As a result, it is possible to reduce weight at a low cost and enhance the insulating performance.

[0031] Furthermore, lower connecting members 80 are provided at the ends of the first wall panel 10 and the second wall panel 20 of the lower floor, and between the first wall panel 10 and the second wall panel 20 of the lower floor. Since the first and second wall panels 10 and 20 of the lower floor are connected by the lower connecting members 80, the first and second wall panels 10 and 20 can be firmly erected while spaced apart, and the thermal insulation layer can be reliably secured. Similarly, in the case of the first wall panel 30 and the second wall panel 40 of the upper floor, the first and second wall panels 30 and 40 of the upper floor are connected by the upper connecting member 90, so that the first and second wall panels 30 and 40 can be firmly erected with a distance between them, and the insulation layer can be reliably secured.

[0032] Furthermore, since the connecting members (lower connecting member 80, upper connecting member 90) include first connecting parts 81, 91 positioned at the ends of the first wall panels (first wall panel 10 on the lower floor, first wall panel 20 on the upper floor), second connecting parts 82, 92 positioned at the ends of the second wall panels (second wall panel 20 on the lower floor, second wall panel 40 on the upper floor), and third connecting parts 83, 93 connecting the first and second connecting parts 81, 82, the connecting members (lower connecting member 80, upper connecting member 90) can be manufactured in advance at a factory or the like, and then easily installed on-site at the ends of the first and second wall panels 10, 20, 30, and 40.

[0033] <Second Embodiment> Figure 5 is a schematic perspective view of a building insulation structure according to a second embodiment of the present invention, and Figure 6 is a side cross-sectional view of the building insulation structure. In the second embodiment of the building's insulation structure, the shapes of the lower connecting member 80 and the upper connecting member 90 differ from those in the first embodiment. Other components such as the foundation 50, the first and second wall panels 10, 20 of the lower floor, the first and second wall panels 30, 40 of the upper floor, the floor panels 60, 70 of the lower and upper floors, the ventilation base 52, the half-sill 53, the girders 54, etc., are the same as in the first embodiment described above, so the same reference numerals are used for similar components and their descriptions are omitted.

[0034] As shown in Figures 5 and 6, the side end of the floor panel 60 of the lower floor is placed on the ventilation base ring 52 on the foundation 50, and a half base 53 is placed on the outside of the side end of the floor panel 60 of the lower floor. Furthermore, a lower connecting member 80A is placed on the ventilation base ring 52, between the side end of the floor panel 60 of the lower floor and the half base 53.

[0035] The lower connecting member 80A includes a fourth connecting portion 81A located at the lower end of the first wall panel 10 of the lower floor and on the outside of the side end of the floor panel 60, a fifth connecting portion 82A located at the lower end of the second wall panel 20 of the lower floor and on the inside of the half foundation 53, and a driving member 83A that is driven in from the fifth connecting portion 82A toward the fourth connecting portion 81A. Specifically, the fourth and fifth connecting portions 81A and 82A are long, plate-like structures that run along the foundation 50. The driven-in member 83A is preferably cylindrical or columnar in shape and has a length that penetrates from the half-base 53 to the fifth connecting portion 82A, the fourth connecting portion 81A, and the side end of the floor panel 60. Furthermore, the driven-in member 83A is preferably made of metal or wood, and specifically preferably a dowel or the like. It is preferable that such a lower connecting member 80A is bonded to the side edge of the floor panel 60 of the lower floor and the half foundation 53 with an adhesive.

[0036] Then, the first wall panel 10 of the lower floor is placed on the fourth connection part 81A and the side end of the lower floor panel 60 via adhesive, and the second wall panel 20 of the lower floor is placed on the fifth connection part 82A and the half base 53 via adhesive.

[0037] Of the anchor bolts 51 (not shown in Figure 5) embedded in the foundation 50, the inner anchor bolt 51 has its upper part inserted through the ventilation base ring 52, and further inserted between the fourth connection part 81A and the side end face of the floor panel 60 of the lower floor, and a tightening nut N is screwed onto the lower end of the first wall panel 10 of the lower floor via a washer (not shown). Similarly, of the anchor bolts 51 embedded in the foundation 50, the outer anchor bolt 51 has its upper part inserted through the ventilation base ring 52, and further inserted between the fifth connection part 82A and the half base 53, and a tightening nut N is screwed onto the lower end of the second wall panel 20 of the lower floor via a washer (not shown). Furthermore, multiple embedded members 83A are driven into the ground at intervals (for example, at equal intervals) from the outer surface of the half-base 53 toward the floor panel 60 of the lower floor, so as to penetrate from the fifth connection part 82A to the fourth connection part 81A, thereby connecting the half-base 53, the fourth and fifth connection parts 81A and 82A with the floor panel 60 of the lower floor. In this way, the first and second wall panels 10 and 20, which are erected spaced apart on the foundation 50, are connected via the lower connecting member 80.

[0038] Furthermore, it is preferable that the aforementioned insulation material 100 (omitted in Figure 5) is filled between the first wall panel 10 and the second wall panel 20 of the lower floor. Furthermore, by appropriately adjusting the distance between the first wall panel 10 and the second wall panel 20 of the lower floor, the amount of insulation material 100 to be filled can be easily adjusted.

[0039] On the other hand, the floor panel 70 of the upper floor is placed on the first wall panel 10 of the lower floor, and the girder 54 is placed on the second wall panel 20 of the lower floor. In addition, an upper connecting member 90A is placed on the first and second wall panels 10 and 20 of the lower floor between the side end of the floor panel 70 of the upper floor and the girder 54. The upper connecting member 90A has the same shape as the lower connecting member 80A described above, and is composed of a fourth connecting portion 91A, a fifth connecting portion 92A, and a drive-in member 93A. It is preferable that such an upper connecting member 90A is bonded with adhesive to the first wall panel 10 and the second wall panel 20 of the lower floor, the side end of the floor panel 70 of the upper floor, and the girder 54.

[0040] Furthermore, the first wall panel 30 of the upper floor (omitted in Figure 5) is placed on the fourth connection part 91A and the side end of the floor panel 70 of the upper floor, and the second wall panel 40 of the upper floor (omitted in Figure 5) is placed on the fifth connection part 92A and the girder 54.

[0041] Then, a girder bolt 55 (not shown in Figure 5), which is screwed onto the upper end of the first wall panel 10 of the lower floor with a tightening nut N via a washer (not shown), has its upper part inserted between the fourth connection part 91A and the side end face of the floor panel 70 of the upper floor, and a tightening nut N is screwed onto the lower end of the first wall panel 30 of the upper floor with a washer (not shown). Similarly, a girder bolt 55, which is screwed onto the upper end of the second wall panel 20 of the lower floor with a tightening nut N via a washer (not shown), has its upper part inserted between the fifth connection part 92A and the girder bolt 54, and a tightening nut N is screwed onto the lower end of the second wall panel 40 of the upper floor with a washer (not shown). Furthermore, multiple embedded members 93A are driven at predetermined intervals from the outer surface of the girder 54 toward the floor panel 70 of the upper floor in a substantially horizontal direction, so as to penetrate from the fifth connecting part 92A to the fourth connecting part 91A, thereby connecting the girder 54, the fourth and fifth connecting parts 91A and 92A to the floor panel 70 of the upper floor. In this way, the first and second wall panels 10 and 20 of the lower floor, which are erected spaced apart on the foundation 50, and the first and second wall panels 30 and 40 of the upper floor, which are erected spaced apart on the first and second wall panels 10 and 20 of the lower floor, are connected by a lower connecting member 80A and an upper connecting member 90A.

[0042] According to the above embodiment, similar to the first embodiment, the space between the first wall panels 10, 30 and the second wall panels 20, 40 can be made into an insulating layer, resulting in excellent thermal insulation. Therefore, by using two existing wall panels and appropriately adjusting the spacing between the first and second wall panels 10, 20, 30, 40, the thickness of the insulating layer can be easily changed. As a result, it is possible to reduce weight at a low cost while simultaneously enhancing thermal insulation.

[0043] Furthermore, since the first and second wall panels 10, 20, 30, and 40 are connected by the lower connecting member 80A and the upper connecting member 90A, the first and second wall panels 10, 20, 30, and 40 can be firmly erected while spaced apart, and the insulation layer can be reliably secured.

[0044] Furthermore, since the connecting members (lower connecting member 80A, upper connecting member 90A) include fourth connecting parts 81A, 91A positioned at the ends of the first wall panels 10, 30, fifth connecting parts 82A, 92A positioned at the ends of the second wall panels 20, 40, and driving members 83A, 93A driven in from the fifth connecting parts 82A, 92A toward the fourth connecting parts 81A, 91A, they can be easily installed on site according to the spacing of the first and second wall panels 10, 20, 30, 40.

[0045] The lower connecting member 80A and the upper connecting member 90A are long, plate-shaped members that run along the foundation 50. Although the configuration is described as consisting of fourth and fifth connecting parts 81A, 82A, 91A, 92A and a plurality of driven members 83A, 93A, the fourth and fifth connecting parts 81A, 82A, 91A, 92A are not limited to long plate shapes, but may also be short plate shapes, and multiple such lower connecting members 80A and upper connecting members 90A may be provided scattered along the foundation 50.

[0046] <Third Embodiment> Figure 7 is a side cross-sectional view of a building insulation structure according to a third embodiment of the present invention. In the third embodiment of the building's insulation structure, lower connecting member 80B and upper connecting member 90B, which have different shapes from the lower connecting member 80 and upper connecting member 90 used in the first embodiment, are used. Other components such as the foundation 50, the first and second wall panels 10, 20 of the lower floor, the first and second wall panels 30, 40 of the upper floor, the floor panels 60, 70 of the lower and upper floors, the ventilation base ring 52, the half-sill 53, the girders 54, etc., are the same as in the first embodiment described above, so the same reference numerals are used for the same components and their descriptions are omitted.

[0047] Specifically, in the first embodiment, the lower connecting member 80 had a portal shape in side view, with the upper ends of the first connecting portion 81 and the second connecting portion 82 connected by a third connecting portion 83. However, in the third embodiment, as shown in Figure 7, the connecting member 80B has a third connecting portion 83B that is sized and shaped to fit between the first and second connecting portions 81B and 82B (i.e., between the first and second wall panels 10 and 20), like a solid beam, and these first to third connecting portions 81B to 83B are bonded together. The upper connecting member 90B is also formed by bonding the first to third connecting portions 91B to 93B together, similar to the lower connecting member 80B.

[0048] Therefore, for example, at a construction site, the first to third connecting parts 81B to 83B and 91B to 93B of the lower connecting member 80B and the upper connecting member 90B, respectively, can be placed and bonded together, thereby easily connecting the first and second wall panels 10, 20, 30, and 40 that are erected at a distance from each other.

[0049] In this explanation, the lower connecting member 80B and the upper connecting member 90B consist of long, plate-shaped first to third connecting sections 81B to 83B and 91B to 93B along the foundation 50. However, the first to third connecting sections 81B to 83B and 91B to 93B are not limited to long, plate-shaped sections; they may also be short, plate-shaped sections. Multiple such lower connecting members 80B and upper connecting members 90B may be provided scattered along the foundation 50.

[0050] Furthermore, in the first to third embodiments described above, the lower connecting members 80, 80A, and 80B are provided at the lower ends of the first and second wall panels 10 and 20 of the lower floor, and the upper connecting members 90, 90A, and 90B are provided at the upper ends of the first and second wall panels 10 and 20 of the lower floor and at the lower ends of the first and second wall panels 30 and 40 of the upper floor. However, the invention is not limited to this, and for example, the connecting members may be provided at the side ends of the first and second wall panels 10, 20, 30, and 40, connecting the side ends of the first and second wall panels 10, 20, 30, and 40 to each other.

[0051] <Examples> Next, we will describe the locations to which the thermal insulation structure of the present invention, as described in the first to third embodiments, is applied, which consists of a structure in which the first and second building structural materials are arranged side by side with a gap between them (hereinafter also referred to as the "double structure"). Of the multiple walls that make up a building, the wall to which the double structure is applied is determined by whether one region and the other region flanking the wall in question are outdoor regions with external air characteristics or indoor regions with internal air characteristics.

[0052] Examples of areas with the aforementioned outdoor air properties include entrance porches, garages, balconies, outdoor storage areas, and outdoor warehouses. Examples of areas with the aforementioned indoor properties include entrance halls, corridors, living rooms, kitchens, storage areas, private rooms, stairwells, utility rooms, bedrooms, toilets, dressing rooms, and bathrooms.

[0053] For example, as shown in Figure 12, when, among a plurality of wall bodies P constituting the building 300, a predetermined wall body P1 has one region on either side of the predetermined wall body P1 that is an outside-air region (outside-air region Ra) and the other region that is an inside-air region (inside-air region Rb), the predetermined wall body P1 is composed of first and second building structural members (first and second wall panels 10, 20, 30, 40) that are spaced apart from each other and arranged side by side. In other words, the double structure described above is applied.

[0054] Furthermore, when a predetermined wall P1 among the multiple wall bodies P constituting the building 300 is composed of first and second building structural members (first and second wall panels 30, 40) arranged side by side at a distance from each other (the double structure), the lower floor wall P2 located below the predetermined wall body P1 is also composed of first and second building structural members (first and second wall panels 10, 20) arranged side by side at a distance from each other (the double structure).

[0055] Specifically, when one of the areas is a balcony 305 and the other area is a bedroom 306, the wall P1 erected between these areas shall have a double structure. Furthermore, the wall P2 on the first floor, located below the wall P1 on the second floor to which the double structure is applied, shall similarly have a double structure.

[0056] Other patterns are shown in Figure 8. In Figure 8, the notation "Outside air + NON" refers to the area outside the building that is adjacent to the area with the outside air attribute, the notation "Outside air + Outside air" refers to the wall between two areas with the outside air attribute, the notation "Outside air + Inside air" refers to the wall between an area with the outside air attribute and an area with the inside air attribute, and the notation "Inside air + Inside air" refers to the wall between two areas with the inside air attribute. Furthermore, in Figure 8, "W" represents a double structure, and "S" represents a single structure, where a single structure is a conventional structure with only one wall panel.

[0057] As shown in Figure 8, in the case of "outside air + NON", if the upper floor has a double structure, it will be a double structure with no insulation between the first and second wall panels, and if the upper floor has a single structure, it will be a single structure with no insulation. In the case of "outside air + outside air", if the upper floor has a double structure, it will be a double structure with no insulation material, and if the upper floor has a single structure, it will be a single structure with no insulation material. In the case of "outside air + inside air," as mentioned above, a double structure with insulation is required. In the case of "internal air" + "internal air", a normal interior wall will be used; if the upper floor has a double structure, a double-structured interior wall will be used; and if the upper floor has a single structure, a single-structured interior wall will be used.

[0058] [Building construction methods] Figures 9 to 12 are schematic perspective views showing a construction method for a building to which the thermal insulation structure of the present invention is applied. In building 300 shown in Figures 9 to 12, the living room 302 is located to the right of the entrance 301, and the garage 303 is located to the left of the entrance 301. Furthermore, storage 304 is located at the back of the garage 303. In addition, there is an open atrium above the garage 303, a balcony 305 is located above the entrance 301, and the bedroom 306 and balcony 305 on the upper floor are located above the living room 302 on the lower floor.

[0059] In order to construct such a building 300, first, as shown in Figure 9, the lower connecting member 80 and the half-sill plate 53 are placed on the foundation 50 on which the wall P constituting the living room 302 to which the double structure is applied is provided. Of these, only the half-sill plate 53 is placed on the foundation 50 to which the wall body to which the single structure is applied is provided. Furthermore, the lower connecting member 80 and the half-base 53 are placed on the foundation 50 on which the wall body P that constitutes the entrance 301 to which the double structure is applied is provided. In addition, only the half-base 53 is placed on the foundation 50 on which the wall body P that constitutes the entrance 301 to which the single structure is applied is provided. Furthermore, the lower connecting member 80 and the half-sill plate 53 are placed on the foundation 50 on which the wall body P constituting the garage 303 to which the double structure is applied is provided. In addition, only the half-sill plate 53 is placed on the foundation 50 on which the wall body P constituting the garage 303 to which the single structure is applied is provided. Then, the floor panels 60 of the lower floor are placed on the designated locations on the foundation 50.

[0060] Next, as shown in Figure 10, in areas where the double structure is applied, the first wall panel 10 of the lower floor is placed on the lower connecting member 80 and the side end of the floor panel 60, and the second wall panel 20 of the lower floor is placed on the lower connecting member 80 and the half base 53. At this time, the first and second wall panels 10 and 20 are placed spaced apart and then fastened together with anchor bolts. Furthermore, in areas where a single structure is applied, the wall panel S is placed on the half-sill 53 and fastened with anchor bolts. In addition, the wall panel S is installed on the floor panel 60 which forms the interior wall of the living space.

[0061] Next, as shown in Figure 11, the floor panels 70 and girders 54 of the upper floor are placed on top of the wall bodies P that make up the entrance 301 and living room 302. At this time, in the upper floor as well, upper connecting members 90 are placed where there are walls to which the double structure is applied. In addition, girders (not shown) and upper connecting members (not shown) are placed on top of the wall bodies P that make up the garage 303 where the double structure is applied.

[0062] Next, as shown in Figure 12, in areas where the double structure is applied, the first wall panel 30 of the upper floor is placed on the upper connecting member 90 (see Figure 11) and the side end of the upper floor panel 70, and the second wall panel 40 of the upper floor is placed on the upper connecting member 90 and the girder 54 (see Figure 11). At this time, the first and second wall panels 30 and 40 are placed spaced apart and then fastened together with girder bolts. Furthermore, in areas where a single structure is applied, the wall panel S is placed on top of the girders and fastened with girder bolts. In addition, wall panels S are installed on top of the floor panels 70 that form the interior walls of the living spaces. In addition, roof panels Y, etc., are installed in designated locations on the upper floor wall panels 30, 40, and S.

[0063] As described above, the predetermined wall P1 sandwiched between the outside air region Ra and the inside air region Rb is composed of first and second wall panels 10, 20, 30, and 40 arranged side by side at a distance from each other, and a double structure is applied, making it possible to create a building 300 with superior thermal insulation. Furthermore, when a predetermined wall P1 on an upper floor is composed of first and second wall panels 30, 40 arranged side by side at a distance from each other, the wall P2 on the lower floor located below the predetermined wall P1 is also composed of first and second wall panels 10, 20 arranged side by side at a distance from each other, so that sufficient strength as a building 300 can be ensured.

[0064] Figures 13 to 17 show the construction method for the building shown in Figures 9 to 12 above, when insulation material is installed between the first and second wall panels. In building 400 shown in Figures 13 to 17, unlike building 300 shown in Figures 9 to 12, the bedroom 407 is located above the garage 403. Reference numeral 401 denotes the entrance, reference numeral 402 denotes the living room, reference numerals 404 and 406 denotes the bedrooms, and reference numeral 405 denotes the balcony.

[0065] In order to construct such a building 400, first, as shown in Figure 13, the double structure The lower connecting member 80 and the half-sill plate 53 are placed on the foundation 50 on which the wall to which the construction is applied is provided. In addition, only the half-sill plate 53 is placed on the foundation 50 on which the wall to which the single structure is applied is provided. Then, the floor panels 60 of the lower floor are placed on the designated locations on the foundation 50.

[0066] Next, as shown in Figure 14, in areas where a double structure is applied, the first wall panel 10 of the lower floor is placed on the lower connecting member 80 and the side end of the floor panel 60. In areas where a single structure is applied, the wall panel S is placed on the half-sill 53 and fastened with anchor bolts. Furthermore, wall panels S are also installed on the floor panel 60 which will become the interior wall of the living room.

[0067] Next, as shown in Figure 15, insulation material 100 is attached to the first wall panel 10 of the wall body that adopts a double structure and faces an area with internal characteristics (for example, living room 402). Insulation material is not attached to the first wall panel 10 of the wall body that adopts a double structure and faces an area with external characteristics (for example, garage 403).

[0068] Next, as shown in Figure 16, the second wall panel 20 is placed on the area of ​​the first wall panel 10 where the insulation material 100 has been attached, and fastened with anchor bolts. In addition, the second wall panel 20 is also placed on the first wall panel 10 that does not have the insulation material 100 attached to the wall facing the garage 403, etc., and fastened with anchor bolts.

[0069] Next, as shown in Figure 17, in areas where a double structure is adopted, the first wall panel 30 of the upper floor is placed on the upper connecting member (not shown) and the side end of the upper floor floor panel 70, and the second wall panel 40 of the upper floor is placed on the upper connecting member (not shown) and the girder (not shown). At this time, insulation material may be provided between the first and second wall panels 30 and 40 of the upper floor as needed, and then fastened with girder bolts. Furthermore, in areas where a single structure is used, wall panels S are placed on top of the beams (not shown) and fastened with beam bolts. In addition, wall panels S are also installed on top of the floor panels 70 that form the interior walls of the living spaces. In addition, roof panels Y, etc., are installed in designated locations on the upper floor wall panels 30, 40, and S.

[0070] In addition, the lower connecting member 80 and upper connecting member 90 used in buildings 300 and 400 as described in Figures 9 to 17 are the portal-shaped members in side cross-section as described in the first embodiment, but the invention is not limited to these, and the lower connecting members 80A, 80B and upper connecting members 90A, 90B described in the second and third embodiments may also be used.

[0071] Although the aforementioned buildings 300 and 400 were two stories high, the same construction method can be used for buildings with three or more stories. Figures 18 and 19 illustrate the construction method for a five-story building. As shown in Figures 18 and 19, among the multiple wall bodies P that constitute the building 500, for a predetermined wall body P1, when one region flanking the predetermined wall body P1 is an outside air region Ra and the other region is an inside air region Rb, the predetermined wall body P1 is made into the double structure composed of first and second building structural members (for example, first and second wall panels 10, 20, 30, 40) that are spaced apart from each other.

[0072] <Reference example> Next, we will explain some examples of building insulation structures based on Figures 20 and 21. Figure 20 shows the thermal insulation structure of a building in which the first and second wall panels are erected back-to-back without any gaps between them. In other words, the thermal insulation structure of building 300 shown in Figure 20 consists of a first building structural material (e.g., a first wall panel 10) and a second building structural material (e.g., a second wall panel) on the structural frame of building 300. A 20) is erected, and the first building structural member (first wall panel 10) and the second building structural member (first wall panel 20) are arranged within a single wall body that forms a wall line in a straight line in a plan view, and are arranged back to back along the thickness direction of the wall body without spacing apart from each other. Specifically, the first and second wall panels 10C, 20C, 30C, and 40C have facing materials 12C, 22C, 32C, and 42C attached to only one side of the frame 11C, 21C, 31C, and 41C, and the hollow parts inside are filled with insulation material 13C, 23C, 33C, and 43C. Then, the facing materials 12C, 22C, 32C, and 42C of each wall panel (10C, 20C, 30C, 40C) are erected so that they face each other back to back. Thus, since the first and second wall panels 10C, 20C, 30C, and 40C are arranged back-to-back, the overall wall thickness of the first and second wall panels is increased, resulting in superior thermal insulation. For example, when providing an insulation layer inside a single building structural material (wall panel), it was necessary to increase the thickness of the building structural material (wall panel) in order to increase the thickness of the insulation layer. However, in the building insulation structure shown in Figure 20, by using multiple existing building structural materials (wall panels) and erecting the first wall panel 10C and the second wall panel 20C back-to-back, the wall thickness can be easily increased. Therefore, it is possible to reduce weight at a low cost while strengthening thermal insulation and structural strength. Furthermore, such a back-to-back structure may be applied to a part of the building according to the present invention.

[0073] Figure 21 shows an example where the types of insulation materials used in the first wall panels 10C and 30C and the second wall panels 20D and 40D are different. Such a back-to-back structure may also be applied to a part of the building according to the present invention. Specifically, it is preferable to use foamed resin-based insulation material with high thermal insulation performance for the insulation material 23D and 43D that is filled into the second wall panels 20D and 40D located on the outside of the building, as described above, and to use fibrous insulation material that facilitates wiring work for the insulation material 13C and 33C that is filled into the second wall panels 10C and 30C located on the inside of the building. In Figures 20 and 21, components similar to those in Figure 2 are denoted by the same reference numerals. [Explanation of symbols]

[0074] 10. First wall panel (first building structural material) 20. Second wall panel (second building structural material) 50 Basics 80, 80A Connecting member (lower connecting member) 81 First connection part 82 Second connection section 83 Third connection section 81A Fourth connection 82A Fifth connection point 83A Insertion Member 100 Insulation 300 buildings P,P1,P2 wall Ra (outside air region) Rb (recirculation area)

Claims

1. The building's insulation structure, A first building structural member and a second building structural member are erected on the structural frame of the building. The first building structural member and the second building structural member are arranged within a wall body that forms a straight wall line in a plan view, and are spaced apart from each other along the thickness direction of the wall body. There is a layer without insulation between the first building structural material and the second building structural material. The first building structural material and the second building structural material are wooden panels for construction. The aforementioned wooden building panel is characterized in that a facing material is attached to one or both sides of a frame made of vertical and horizontal frame members assembled in a rectangular shape, and the internal structure is hollow.

2. The thermal insulation structure for a building according to claim 1, characterized in that, of the anchor bolts embedded in the foundation, the upper part of the inner anchor bolt is fastened to the lower end of the first building structural member on the lower floor, and the upper part of the outer anchor bolt is fastened to the lower end of the second building structural member on the lower floor.

3. The side edges of the floor panels of the lower floor are placed on the foundation, and a half-sill plate is placed on the outside of the side edges of the floor panels of the lower floor on the foundation. The first building structural member of the lower floor is placed on the side edge of the floor panel of the lower floor. The thermal insulation structure of a building according to claim 1, characterized in that the second building structural material of the lower floor is placed on the aforementioned half-foundation.

4. The floor panels of the upper floor are placed on top of the first building structural material of the lower floor. The girders are placed on the second building structural member on the lower floor. The first building structural member of the upper floor is placed on the side edge of the floor panel of the upper floor. The second building structural member of the upper floor is placed on top of the aforementioned beam. The upper end of the first building structural member on the lower floor and the lower end of the first building structural member on the upper floor are connected by connecting bolts. The thermal insulation structure of a building according to claim 1, characterized in that the upper end of the second building structural member on the lower floor and the lower end of the second building structural member on the upper floor are connected by a connecting bolt.

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