House, sauna room and structural walls

Abstract

To provide a structural wall that can be easily installed.SOLUTION: A structural wall 1 has a body of a plurality of lightweight panels 10 arranged as partitions separating the inside of a house from the outside. The lightweight panel 10 is joined to another lightweight panel 10 arranged adjacently on the partition. The lightweight panels 10 are provided with fitting parts 12 along butt surfaces 11 at each of the butt surfaces 11 to be joined. A joining material 20 for joining the two lightweight panels 10 is filled into a joint 16 where the fitting parts 12 are fitted. An inner coating layer 21 is formed on an inner side of the lightweight panel, and durability is imparted to the lightweight panel 10 as the structural wall 1. The joining material 20 is filled into the joint 16 where the lightweight panels 10 are in contact, and the inner coating layer 21 is provided on the inner side of the lightweight panel 10, thereby forming the structural wall 1. For this reason, the structural wall 1 according to the embodiment can be easily installed.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The technical aspects of this specification relate to structural walls that can be easily installed, houses formed from such structural walls, and sauna rooms as houses. [Background technology]

[0002] Conventionally, as an example of a house using structural walls, Patent Document 1 describes a house formed by connecting multiple foam panels via fastenings. Patent Document 2 also describes a sauna room formed by connecting side panels composed of an interior panel, a side panel, and a foamed resin layer between them. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2018-123493 [Patent Document 2] Utility Model Registration No. 3233199 Gazette [Overview of the Initiative] [Problems that the invention aims to solve]

[0004] Conventional structural walls use metal components and wood for fastenings, interior panels, and side panels, and the entire structure is made up of heavy materials, which presented a challenge in terms of ease of installation.

[0005] The problem that the technology described herein aims to solve has been addressed in view of the above-mentioned points, and aims to provide a structural wall that can be easily installed. [Means for solving the problem]

[0006] A structural wall according to the embodiment of this specification is a structural wall arranged as a partition separating the interior of a house from the exterior, Multiple lightweight panels form the structure, The lightweight panel and the lightweight panel placed next to it in the partition of the house are joined together. Each of the butt joints of the two lightweight panels is provided with a fitting portion along the butt joint. The joint formed by butting the abutting surfaces of the two lightweight panels and fitting the fitting portion is joined by a joining material that joins the two lightweight panels. The lightweight panel, which faces the interior side of the house, is characterized by having an inner coating layer formed on its side surface.

[0007] According to the structural wall embodiment of this specification, a plurality of lightweight panels are arranged as a partition separating the interior of a house from the exterior, forming the frame. The joints formed by butting the abutting surfaces of lightweight panels with adjacent lightweight panels and fitting the interlocking parts are joined together with a joining material, thereby forming the structural wall of the house. Furthermore, an inner covering layer is formed on the side surface of the lightweight panels that face the interior of the house, providing durability to the lightweight panels as structural walls. In the structural wall, the joints where the lightweight panels meet are joined with a joining material, and an inner covering layer is formed on the interior side of the lightweight panels. For this reason, the structural wall according to the embodiment can be easily installed.

[0008] In this case, the structural wall can be configured such that an outer covering layer is formed on the side surface of the lightweight panel that is on the exterior side of the house.

[0009] According to this, since an external covering layer is formed on the side of the lightweight panel that faces the exterior of the house, the structural wall can be given durability from the outside.

[0010] Furthermore, in the above-mentioned structural wall, the elongation rates (ASTM D-412) of the inner coating layer and the outer coating layer can each be 100% or more.

[0011] According to this, the inner and outer coating layers can follow the deformation caused by thermal expansion of the lightweight panels used as structural walls and vibrations from external factors, thereby increasing the durability of the structural walls.

[0012] Here, the house according to the embodiment can be such that the partition is the above-described structural wall.

[0013] According to this, the house of the embodiment can be made to have high durability.

[0014] Further, the sauna room according to the embodiment is such that the above-described house is a sauna room, and it can be configured to include a heater for heating the interior therein, and an interior protective layer is provided on the surface of the inner coating layer.

[0015] According to this, the sauna room of the embodiment can improve the heat resistance of the inner coating layer by the interior protective layer.

[0016] Also, in the above sauna room, it can be configured such that an exterior protective layer is provided on the surface of the outer coating layer.

[0017] According to this, the sauna room can be made to have enhanced heat retention by the exterior protective layer.

Effects of the Invention

[0018] According to the structural wall of this specification, it can be easily installed.

Brief Description of the Drawings

[0019] [Figure 1] It is a side view of a sauna room as a house provided with the structural wall of the first embodiment. [Figure 2] It is a front view of the same sauna room. [Figure 3] It is a sectional view taken along line III-III of FIG. 1. [Figure 4] It is an enlarged view (A) of the joint between the floor panel and the side panel, and an enlarged view (B) of the joint between the upper side panel and the ceiling panel. [Figure 5] It is a front view (A) and a side view (B) of a box-type store provided with the structural wall of the second embodiment. [Modes for carrying out the invention]

[0020] The following describes a structural wall 1 and a house equipped with the structural wall 1 according to an embodiment of this specification. The structural wall 1 in the embodiment is used as a wall as a structure that is arranged as a partition separating the interior of the house from the outside. The house in the embodiment can be installed outdoors, indoors, on the back of a vehicle, on the deck of a ship, etc., and can be used as a sauna room 100 for steam and hot air baths, a box-type store 100A for selling food and goods, a shelter for evacuation during earthquakes, etc., a temporary house for temporary housing after earthquakes, etc. In the embodiment, a house refers to a room, shed, or house consisting of one room. In the embodiment, the sauna room 100 for steam and hot air baths will be described as the first embodiment, and the box-type store 100A for selling food and goods will be described as the second embodiment.

[0021] (First Embodiment) In the first embodiment, the sauna room 100, as a house equipped with a structural wall 1, has a cylindrical frame, with the axial direction of the cylindrical shape oriented transversely. The sides are formed by a circumferential wall 110 consisting of a continuous structural wall 1 that encircles the cylindrical shape, and the front and rear surfaces are closed off by a front wall 120 and a rear wall 130, both made of structural wall 1. The front wall 120 is provided with a hinged door 101 for people to enter and exit, and the circumferential wall 110 is provided with a light-gathering window 102 for letting in sunlight. Here, the orientation of the sauna room 100 is as shown in Figures 1 and 2, with the axial direction of the cylindrical shape being the front-to-back direction, the side with the hinged door 101 (front wall 120) being the front, and the top, bottom, left, and right directions are as viewed from the front of the sauna room 100. In the illustrations, F is front, B is back, U is up, D is down, L is left, and R is right. Furthermore, the structural wall 1 of the sauna room 100 may be used as a reference point, and the direction of the circumference of the cylindrical sauna room 100 (such as clockwise) is the direction when the sauna room 100 is viewed from the front.

[0022] As shown in Figure 1, the structural wall 1, which is positioned as a partition separating the inside of the sauna room 100 from the outside, consists of a cylindrical peripheral wall 110 with the front-to-back direction as its axial direction, and a front wall 120 and a rear wall 130 that cover the front and rear surfaces enclosed by the peripheral wall 110, respectively.

[0023] As shown in Figures 2 and 3, the peripheral wall 110 is formed in a cylindrical shape as a structural wall 1 that separates the inside of the sauna room 100 from the outside. It consists of lightweight panels 10 with a roughly rectangular shape and an arc-shaped cross-section, arranged along the outer circumference in the vertical, horizontal, and vertical directions, with the longer sides facing front to back and the shorter sides facing circumferentially.

[0024] The lightweight panels 10 that constitute the peripheral wall 110 as structural wall 1 include a floor panel 111 positioned below the peripheral wall 110, side panels 112 positioned on the sides, a top panel 113 positioned above, and upper side panels 114 positioned on the left and right sides of the top panel 113, due to differences in their placement and the shape of the fitting portions 12 provided on the abutting surfaces 11.

[0025] The floor panel 111 is positioned below the peripheral wall 110, and at both ends, the abutting surfaces 11 have notched recesses 13 formed along the front-to-back direction, serving as fitting portions 12, with a rectangular cross-section.

[0026] The side panels 112 are positioned on the left and right sides of the peripheral wall 110. A protruding projection 14, with a protruding center in its cross-section, is formed as a fitting portion 12 on the abutting surface 11 of the lower end, and the protruding projection 14 fits into a notched recess 13 of the panel positioned below (floor panel 111 or side panel 112). A notched recess 13, with a rectangular cross-section, is formed as a fitting portion 12 on the abutting surface 11 of the upper end.

[0027] The top panel 113 is positioned above the peripheral wall 110, and at the abutting surfaces 11 at both the left and right ends, a notched portion 15 is formed along the front-to-back direction as a fitting portion 12, where the inner side of the peripheral wall 110 is cut out.

[0028] The upper side panels 114 are positioned on the left and right sides of the top panel 113. A protruding projection 14 is formed as a fitting portion 12 on the abutting surface 11 at the lower end, and the protruding projection 14 fits into the notched recess 13 of the side panel 112. A notched portion 15 is formed as a fitting portion 12 on the abutting surface 11 at the upper end, where the outer side of the peripheral wall 110 is cut out, and the notched portion 15 fits into the notched portion 15 of the top panel 113.

[0029] As shown in Figures 2 and 3, the floor panel 111 is positioned at the bottom of the cylindrical peripheral wall 110, and side panels 112 are positioned on the circumference of the cylinder on both the left and right sides of the floor panel 111, with the protruding portions 14 of the side panels 112 fitting into the notched recesses 13 at both ends of the floor panel 111.

[0030] The side panels 112 are arranged on the circumference of the cylinder, with their lower ends joined to the floor panel 111 or to a side panel 112 joined to the floor panel 111. The side panels 112 are stacked according to the size of the peripheral wall 110, and the protruding portions 14 of the side panels 112 fit into the notched recesses 13 of the floor panel 111 or the side panels 112.

[0031] The upper side panels 114 are positioned on the left and right sides of the upper circumference of the cylinder, with their lower ends joined to the side panels 112, and the lower protruding portions 14 of the upper side panels 114 fitting into the notched recesses 13 of the side panels 112. The upper sides of the upper side panels 114, each positioned on the left and right, have notched portions 15 on the outside.

[0032] The top panel 113 has notches 15 on the inside of both the left and right ends that fit into notches 15 on the outside of the upper side panels 114, which are located on the left and right sides. This closes the circumference and forms a cylindrical peripheral wall 110.

[0033] As shown in Figure 1, the front and rear of the cylindrical peripheral wall 110 are closed by fitting in a front wall 120 and a rear wall 130, which are made of lightweight panels 10 formed to match the shape of the inner circumference of the peripheral wall 110, thereby forming a structural wall 1 that separates the inside of the sauna room 100 from the outside. As shown in Figures 1 to 3, the cylindrical sauna room 100 is placed on a base 106 that conforms to the shape of the peripheral wall 110 so that it can be installed stably, and is installed outdoors or elsewhere.

[0034] The lightweight panel 10 can use polystyrene foam (EPS (expandable polystyrene beads)) which is easy to mold by bead foaming, with a thickness of 150-500 mm and a bulk density of 17-33 kg / m². 3 Panels with an expansion ratio of 30 to 60 times can be used. Since the lightweight panel 10 can be easily cut with a utility knife or the like, fitting parts 12 (notched recesses 13, protruding parts 14, and interlocking parts 15) can be easily formed on the butt joint surfaces 11, and the size of the lightweight panel 10 can be easily adjusted. For this reason, the size of the sauna room 100 as a house can be freely set.

[0035] When EPS is used as a lightweight panel 10 in a structural wall 1 that separates the interior of the sauna room 100 from the outside, the structural wall 1 (sauna room 100) can stand on its own without the need for reinforcing materials such as metal members. As a result, the sauna room 100 formed from EPS is lightweight, easy to install, and easy to move. Furthermore, because EPS as a lightweight panel 10 is plastic, if a user in the sauna room 100 bumps their head or other body part against the structural wall 1, the plasticity reduces the impact on the head or other body part, thus protecting the head or other body part.

[0036] The joint portion 16 of the protruding convex portion 14 and the notched recess 13 of the fitting portion 12 of the lightweight panel 10, the joint portion 16 of the notched interlocking portion 15 on the inside and the notched interlocking portion 15 on the outside, and the fitting portion 17 in which the front wall 120 or rear wall 130 is fitted into the peripheral wall 110 are each bonded together with a caulking material as a bonding material 20.

[0037] The caulking material, used as the bonding material 20, is a material that adheres the joint 16 between the lightweight panels 10 forming the peripheral wall 110 and the fitting portion 17 between the peripheral wall 110 and the front wall 120 or rear wall 130. The caulking material can be composed of moisture-curing silicone caulking material, urethane caulking material, dry-curing acrylic caulking material, butyl rubber caulking material, etc. In another embodiment, a moisture-curing caulking material with less shrinkage during curing can be used, and in yet another embodiment, silicone caulking material can be used.

[0038] The caulking material, which serves as the jointing material 20, can be applied by rubbing from both the inside and outside of the sauna room 100, which is a house, to the joints 16 where the lightweight panels 10 abut each other, and to the interlocking parts 17 between the surrounding wall 110 and the front wall 120 or rear wall 130. As a result, the joints 16 and interlocking parts 17 of the lightweight panels 10 are filled with the caulking material 20 without any gaps, thereby improving the adhesion between the joints 16 and the interlocking parts 17. Rubbing is a method of applying the caulking material 20 to the joints 16 by pressing it in with a trowel to create a thin, smooth coating.

[0039] On the inner surface of the lightweight panel 10 that forms the interior side of the sauna room 100 as a house, a resin is applied to form an inner coating layer 21 that provides durability, and on the surface of the inner coating layer 21 formed from the resin, an interior topcoat material that forms an interior protective layer 22 is applied. On the outer surface of the lightweight panel 10 that forms the exterior side of the sauna room 100, a resin is applied to form an outer coating layer 26 that provides durability, and on the surface of the outer coating layer 26 formed from the resin, an exterior topcoat material that forms an exterior protective layer 27 is applied.

[0040] The inner coating layer 21 and the outer coating layer 26 are made of the same type of resin and are formed on the inside and outside of the sauna room 100, respectively, to provide durability to the sauna room 100. A resin with an elongation rate (ASTM D-412) of 100-1000% can be used. An elongation rate of 100-1000% allows the inner coating layer 21 and the outer coating layer 26 to follow deformations caused by thermal expansion of the sauna room 100 and vibrations from external factors, thereby ensuring the durability of the building. If the elongation rate of the inner coating layer 21 and the outer coating layer 26 is less than 100%, they will not be able to follow the deformation of the sauna room 100, which may cause cracks in the inner coating layer 21 and the outer coating layer 26, potentially compromising durability. On the other hand, if the elongation rate of the inner coating layer 21 and the outer coating layer 26 exceeds 1000%, although durability can be ensured, the inner coating layer 21 and the outer coating layer 26 become flexible and soft, resulting in a sticky feeling, making them prone to dirt adhesion, and potentially causing discomfort to users of the sauna room 100. In another embodiment, the elongation rate of the inner coating layer 21 and the outer coating layer 26 is 150-800%, and in yet another embodiment, the elongation rate is 200-600%.

[0041] As the resin forming the inner coating layer 21 and the outer coating layer 26, general-purpose resins such as urea resin, urethane resin, silicone resin, and acrylic resin can be used. In another embodiment, urea resin and urethane resin that can be cured instantly can be used, and in yet another embodiment, urea resin that is resistant to hydrolysis can be used. Urea resin (polyurea) is a resin produced by mixing isocyanate components and amine components at the tip of a spray gun. Urethane resin (polyurethane) is a resin produced by mixing isocyanate components and polyol components at the tip of a spray gun. Furthermore, a mixture of urea resin and urethane resin can also be used as the resin forming the inner coating layer 21 and the outer coating layer 26. In addition, the resin forming the inner coating layer 21 and the outer coating layer 26 can also be colored with pigments or colored aggregates.

[0042] The coating amounts for the inner coating layer 21 and the outer coating layer 26 are 0.5 to 5 kg / m², respectively. 2 (Film thickness: approximately 0.5-5 mm) This is because it provides sufficient durability. The coating amounts for the inner coating layer 21 and the outer coating layer 26 are 0.5 kg / m². 2 If the amount is less than 5 kg / m², the film thickness will be thin, and when subjected to impact from external factors, cracks or peeling may occur in the inner coating layer 21 and the outer coating layer 26, potentially compromising durability. On the other hand, the coating amount of the inner coating layer 21 and the outer coating layer 26 is 5 kg / m². 2 If the amount exceeds this, durability will be ensured, but the film thickness will be excessive, which may be uneconomical. In another embodiment, the coating amounts for the inner coating layer 21 and the outer coating layer 26 are 1 to 4 kg / m² each. 2 (Film thickness: approximately 1-4 mm) can be set to 2-3 kg / m². 2 (Film thickness: approximately 2-3 mm)

[0043] In the embodiments, "coating amount" and "parts by mass (%)" when expressing the amount or ratio of resin or topcoat material refer to "coating amount of non-volatile components" and "parts by mass (%) of non-volatile components," respectively, unless otherwise specified.

[0044] The interior protective layer 22 is applied to improve the heat resistance of the inner coating layer 21. Since the interior topcoat material forming the interior protective layer 22 is applied to the inside of the sauna room 100 as a house, a general-purpose emulsion paint with excellent heat resistance can be used. Depending on its resin composition, the resin emulsion of the interior topcoat material forming the interior protective layer 22 can be vinyl acetate emulsion, ethylene vinyl acetate emulsion, acrylic emulsion, acrylic styrene emulsion, acrylic silicone emulsion, acrylic urethane emulsion, etc. In another embodiment, acrylic emulsion, acrylic styrene emulsion, acrylic silicone emulsion, or acrylic urethane emulsion with excellent heat resistance can be used. In yet another embodiment, acrylic emulsion, acrylic silicone emulsion, or acrylic urethane emulsion with excellent water resistance in addition to heat resistance can be used.

[0045] The interior topcoat material forming the interior protective layer 22 may contain metallic pigments. Metallic pigments have excellent heat-shielding properties and reflect the heat from the sauna room 100, thereby further improving the heat resistance of the inner coating layer 21. Examples of metallic pigments that can be used include titanium oxynitride powder, titanium-manganese composite oxide powder, titanium dioxide powder, and aluminum powder.

[0046] Metallic pigments can be included in the interior topcoat material forming the interior protective layer 22 at a concentration of 1 to 50% by mass. This is because it allows the interior protective layer 22 to maintain heat-shielding properties and improves the heat resistance of the inner coating layer 21. If the metallic pigment content is less than 1% by mass, the interior protective layer 22 may not be able to maintain sufficient heat-shielding properties. On the other hand, if the metallic pigment content exceeds 50% by mass, the resin component becomes relatively low, and there is a risk that it may not be able to follow the movement of the inner coating layer 21, leading to cracking or peeling. In another embodiment, metallic pigments can be included in the interior topcoat material forming the interior protective layer 22 at a concentration of 3 to 25% by mass, and in yet another embodiment, they can be included at a concentration of 5 to 15% by mass.

[0047] The coating amount of the interior protective layer 22 can be 0.05 to 0.5 kg / m 2 (film thickness: about 0.05 to 0.5 mm). This is because sufficient heat resistance can be exhibited. When the coating amount of the interior protective layer 22 is less than 0.05 kg / m 2 , the film thickness of the interior protective layer 22 is thin, and there is a risk of cracking and peeling because it cannot follow the movement of the inner coating layer 21. On the other hand, when the coating amount of the interior protective layer 22 exceeds 0.5 kg / m 2 , although heat resistance is ensured, an excessive film thickness may result in uneconomicalness. As another embodiment, the coating amount of the interior protective layer 22 can be 0.06 to 0.2 kg / m 2 (film thickness: about 0.06 to 0.2 mm), and as yet another embodiment, it can be 0.07 to 0.1 kg / m 2 (film thickness: about 0.07 to 0.1 mm).

[0048] The inner coating layer 21 and the interior protective layer 22 formed on the inner surface of the lightweight panel 10 have flexibility. Therefore, when a user hits their head or the like against the lightweight panel 10 (structural wall 1) where the inner coating layer 21 and the interior protective layer 22 are formed in the sauna room 100 with the lightweight panel 10 as the housing, the impact on the head or the like is reduced due to the flexibility, and the head or the like is protected.

[0049] The exterior protective layer 27 is applied to improve the heat retention of the sauna room 100 in order to improve the weather resistance of the outer coating layer 26. In addition, the exterior protective layer 27 also imparts design properties to the appearance of the sauna room 100. For this reason, the exterior protective layer 27 contains 30 to 50% by mass of a filler (aggregate).

[0050] The exterior topcoat material forming the exterior protective layer 27 is applied to the outside of the sauna room 100 as a house, so a general-purpose emulsion paint with excellent weather resistance can be used. Depending on its resin composition, the resin emulsion of the topcoat material forming the exterior protective layer 27 can be vinyl acetate emulsion, ethylene vinyl acetate emulsion, acrylic emulsion, acrylic styrene emulsion, acrylic silicone emulsion, acrylic urethane emulsion, etc. In another embodiment, acrylic emulsion, acrylic styrene emulsion, acrylic silicone emulsion, or acrylic urethane emulsion with excellent weather resistance can be used. In yet another embodiment, acrylic emulsion, acrylic silicone emulsion, or acrylic urethane emulsion with excellent water resistance in addition to weather resistance can be used.

[0051] The fillers (aggregates) contained in the exterior topcoat material that forms the exterior protective layer 27 include calcium carbonate, silica sand, and glass beads. These fillers (aggregates) are used with a particle size (d50 (cumulative 50 vol% diameter)) of 0.1 to 2.0 mm in order to give the exterior protective layer 27 an aesthetic appearance.

[0052] The exterior topcoat material forming the exterior protective layer 27 may contain inorganic pigments. Inorganic pigments have excellent heat absorption properties from sunlight and can improve the heat retention of the sauna room 100. Examples of inorganic pigments that can be used include carbon black, iron black, pyrite, and red iron oxide.

[0053] The application rate for the exterior protective layer 27 is 0.5 to 3.0 kg / m². 2 (Film thickness: approximately 0.5 to 3.0 mm) This is because it can provide sufficient weather resistance and heat retention. The coating amount of the exterior protective layer 27 is 0.5 kg / m². 2 If the amount is less than 3.0 kg / m², the thickness of the outer protective layer 27 will be too thin, and it may not be able to follow the movement of the inner coating layer 21, potentially causing cracking or peeling. On the other hand, if the amount of outer protective layer 27 applied is 3.0 kg / m² 2If the amount exceeds this, weather resistance and heat retention will be ensured, but the film thickness will be excessive, which may be uneconomical. In another embodiment, the amount of exterior protective layer 27 applied is 0.8 to 2.0 kg / m 2 (Film thickness: approximately 0.8~2.0 mm) can be set to 1.0~1.5 kg / m². 2 (Film thickness: approximately 1.0 to 1.5 mm)

[0054] Next, a method for installing a sauna room 100 using the structural wall 1 of the first embodiment will be described. The installation method for the sauna room 100 of the embodiment was carried out in the following order: an assembly step of joining lightweight panels 10 and assembling them to the cylindrical structural wall 1; an equipment installation step of attaching the front wall 120 and the rear wall 130 and installing equipment such as a hinged door 101 in the sauna room 100; a coating layer formation step of forming an inner coating layer 21 and an outer coating layer 26 on the inner and outer surfaces of the sauna room 100, respectively; an interior protective layer formation step of forming an interior protective layer 22 on the surface of the inner coating layer 21; and an exterior protective layer formation step of forming an exterior protective layer 27 on the surface of the outer coating layer 26.

[0055] The lightweight panel 10 that forms the structural wall 1 of the sauna room 100 has an expansion ratio of 50 and a bulk density of 20 kg / m³. 3 Polystyrene foam (EPS) with a thickness of 120 mm, a length of 3,500 mm in the front-to-back direction, and a length of 600-800 mm in the circumferential direction was used.

[0056] The lightweight panel 10 that will become the floor panel 111 has notched recesses 13 with a rectangular cross-section formed as fitting portions 12 along the front-to-back direction on the abutting surfaces 11 at both the left and right ends in the circumferential direction. The lightweight panel 10 that will become the side panel 112 has a protruding projection 14 with a protruding center in the cross-section formed as a fitting portion 12 on the abutting surface 11 at the lower end, and a notched recess 13 with a rectangular cross-section formed as a fitting portion 12 on the abutting surface 11 at the upper end. The lightweight panel 10 that will become the top panel 113 has a notched joint 15 with an inward cutout formed as a fitting portion 12 along the front-to-back direction on the abutting surfaces 11 at both the left and right ends in the circumferential direction. The lightweight panel 10, which will become the upper side panel 114, has a protruding portion 14 formed as a fitting portion 12 on the abutting surface 11 at the lower end, and a notched portion 15 with the outer side cut out formed as a fitting portion 12 on the abutting surface 11 at the upper end.

[0057] In the assembly process, lightweight panels 10 were placed along the outer circumference of the cylindrical sauna chamber 100, and adhesive material 20 was applied to each fitting portion 12 of the joint portion 16 of the butt surfaces 11 of the lightweight panels 10, and the lightweight panels 10 were assembled by joining the butt surfaces 11 together.

[0058] The assembly process involves placing the floor panel 111 on the placement surface where the sauna room 100 will be positioned, joining the protruding portions 14 of the side panels 112 to the left and right notched recesses 13 of the floor panel 111 from the left and right, respectively, and joining the protruding portions 14 of the side panels 112 to the notched recesses 13 of the left and right side panels 112 from the left and right, respectively, to gradually form a cylindrical shape. Then, joining the protruding portions 14 of the upper side panels 114 to the notched recesses 13 of the left and right side panels 112 from the left and right, respectively, to the opposing ends of the left and right upper side panels 114, which will have notched portions 15 on the outside that serve as fitting portions 12. The top panel 113, which has notched portions 15 on the left and right sides that are cut on the inside, is fitted in so as to connect the notched portions 15 on the left and right sides, thereby closing the circumferential wall 110 of the sauna room 100 and forming a cylindrical shape.

[0059] In the assembly process, a bonding material 20 made of silicone sealant was applied to the fitting portion 12, which forms the joint 16 of the butt joint surface 11 of the lightweight panel 10, to bond the lightweight panels 10 together. In addition, the bonding material 20 was applied to the butt joint surface 11 of the lightweight panel 10 from both the inside and outside of the sauna room 100 by wiping to improve the adhesion of the joint 16.

[0060] The equipment installation process involves attaching a front wall 120 to the front side and a rear wall 130 to the rear side of the surrounding wall 110 of the sauna room 100, and attaching a hinged door 101 to the front wall 120 and a skylight 102 to the surrounding wall 110. The front wall 120 and the rear wall 130 are attached to the surrounding wall 110 by bonding them together using a silicone-based sealant 20, and by driving fixing nails (not shown) into the front wall 120 and the rear wall 130 from the outside of the surrounding wall 110. The hinged door 101 is attached to the front wall 120 by fitting an outer frame (not shown) of the hinged door 101, and the skylight 102 is attached to the surrounding wall 110 by fitting an outer frame (not shown) of the skylight 102. The hinged door 101 and the skylight window 102 are masked with masking tape on both the inside and outside, as they may become soiled with resin or other substances during the subsequent coating layer formation process.

[0061] In the coating layer formation process, a resin is applied to the inner and outer surfaces of the lightweight panels 10 that form the inner and outer surfaces of the sauna room 100, which will serve as the interior and exterior of the house. In this embodiment, a commercially available urea resin was used to form the inner and outer coating layers by mixing isocyanate and amine components at the tip of a spray gun. The inner and outer coating layers 21 and 26 made of urea resin in this embodiment have an elongation rate (ASTM D-412) of 300%, and the application rate is 2.0 kg / m². 2 (Film thickness: approximately 2.0 mm)

[0062] The interior protective layer formation process involves applying an interior topcoat material to the surface of the inner coating layer 21 formed from resin, which forms the interior protective layer 22. In this embodiment, the interior topcoat material used is a general-purpose acrylic emulsion paint (JIS K 5660 glossy synthetic resin emulsion paint), and the application amount is 0.08 kg / m². 2 (Film thickness: approximately 0.08 mm). The acrylic emulsion paint used for the interior topcoat contains approximately 10% by mass of titanium dioxide powder to reflect the heat from the sauna room 100 due to its heat-shielding properties.

[0063] The exterior protective layer formation process involves applying a topcoat material that forms the exterior protective layer 27 to the surface of the outer coating layer 26 formed from resin. In this embodiment, the exterior topcoat material used is a general-purpose acrylic emulsion paint (JIS A 6909 Exterior Thin Coating Material E), and the application amount is 1.2 kg / m². 2 (Film thickness: approximately 1.2 mm). The acrylic emulsion paint used as the exterior topcoat contains approximately 3% by mass of carbon black to absorb heat from sunlight and improve the heat retention of the sauna room 100, and is colored black.

[0064] As shown in Figure 3, the sauna room 100 can function as a sauna room 100 for steam and hot air bathing by arranging a seat 103, a heater (not shown), etc. inside.

[0065] According to the structural wall 1 of this specification, a plurality of lightweight panels 10 arranged as partitions separating the interior of a house from the exterior form the frame, and a joint 16 is formed by butting the abutting surfaces 11 of a lightweight panel 10 with an adjacent lightweight panel 10 and fitting a fitting portion 12, and then filling the joint with a joining material 20 to form the structural wall 1 of the house. In addition, an inner covering layer 21 is formed on the side surface of the lightweight panel 10 that is on the interior side of the house, providing durability to the lightweight panel 10 as a structural wall 1. The structural wall 1 is formed by filling the joint 16 where the lightweight panels 10 meet with a joining material 20 and providing an inner covering layer 21 on the interior side of the lightweight panel 10. For this reason, the structural wall 1 according to this specification can be easily installed.

[0066] (Second Embodiment) Hereinafter, a box-type store 100A, which is a house equipped with a structural wall 1 according to the second embodiment of this specification, will be described with reference to Figure 5. In the second embodiment, elements common to the first embodiment will be given the same reference numerals and their descriptions will be omitted.

[0067] As shown in Figure 5, the box-type store 100A of the second embodiment has a roughly box-like shape, and its sides are formed by a perimeter wall 110 consisting of a continuous structural wall 1 that is cylindrical and wraps around the circumferential direction. The perimeter wall 110 is formed by using a plurality of rectangular lightweight panels 10 as the main body, and by butting the abutting surfaces 11 of a lightweight panel 10 with an adjacent lightweight panel 10 and fitting a fitting portion 12 into the joint portion 16, where a joining material 20 is filled. The front and rear surfaces of the box-type store 100A, enclosed by the perimeter wall 110, are closed off by a front wall 120 and a rear wall 130, which are made of structural walls 1. The front wall 120 is provided with a sales window 107 for selling food, beverages and goods to customers, and a hinged door 101 for employee entrance and exit is provided on the right side of the perimeter wall 110. Box-type store 100A requires that the room temperature not rise excessively because employees will be working inside, and the interior must be water-resistant when handling food and beverages.

[0068] On the inner surface of the lightweight panel 10, which forms the interior side of the box-type store 100A, a resin is applied to form an inner coating layer 21 that provides durability, and on the surface of the inner coating layer 21 formed from the resin, an interior topcoat material is applied to form an interior protective layer 22A. In addition, on the outer surface of the lightweight panel 10, which forms the exterior side of the box-type store 100A, a resin is applied to form an outer coating layer 26 that provides durability, and on the surface of the outer coating layer 26 formed from the resin, an exterior topcoat material is applied to form an exterior protective layer 27A.

[0069] The interior protective layer 22A is applied to improve the water resistance of the inner coating layer 21. A general-purpose emulsion paint with excellent water resistance can be used as the interior topcoat material forming the interior protective layer 22A. In this embodiment, a glossy synthetic resin emulsion paint (JIS K 5660) was used as the interior topcoat material forming the interior protective layer 22A.

[0070] The application rate for interior protective layer 22A is 0.05 to 0.5 kg / m². 2 (Film thickness: approximately 0.05~0.5 mm) This is because it can provide sufficient water resistance. The application amount of interior protective layer 22A is 0.05 kg / m 2 If the amount is less than 0.5 kg / m², the film thickness will be thin and may not be able to follow the movement of the inner coating layer 21, potentially leading to cracking or peeling and poor water resistance. On the other hand, the application amount of the interior protective layer 22A is 0.5 kg / m². 2 If the amount exceeds this, water resistance will be ensured, but the film thickness will be excessive, which may be uneconomical. In another embodiment, the amount of interior protective layer 22 applied is 0.06 to 0.2 kg / m 2 (Film thickness: approximately 0.06~0.2 mm) can be set to this, and in another embodiment, 0.07~0.1 kg / m 2 (Film thickness: approximately 0.07~0.1 mm)

[0071] The exterior protective layer 27A is applied to improve the weather resistance of the outer coating layer 26. Since the exterior topcoat material forming the exterior protective layer 27A is applied to the outside of the box-type store 100A, a general-purpose emulsion paint with excellent weather resistance can be used. In this embodiment, a high solar reflectance roof paint (JIS K5675) of type 1 LG was used as the exterior topcoat material forming the exterior protective layer 27A. The high solar reflectance roof paint contains titanium-manganese composite oxide powder as a metallic pigment and effectively reflects solar radiant heat, thus providing excellent weather resistance and suppressing the rise in room temperature inside the box-type store 100A. Furthermore, the high solar reflectance roof paint used as an exterior topcoat material can contain 10 to 30% by mass of hollow filler, which can further suppress the rise in room temperature inside the box-type store 100A.

[0072] The application rate for the exterior protective layer 27A is 0.1 to 1.0 kg / m². 2 (Film thickness: approximately 0.1 to 1.0 mm) This is because it provides sufficient weather resistance. The application amount of exterior protective layer 27A is 0.1 kg / m². 2 If the amount is less than 1.0 kg / m², the film thickness will be thin and may not be able to follow the movement of the inner coating layer 21, potentially leading to cracking or peeling and poor weather resistance. On the other hand, if the coating amount of the outer protective layer 27A is 1.0 kg / m² 2 If the amount exceeds this, weather resistance will be ensured, but the film thickness will be excessive, which may be uneconomical. In another embodiment, the coating amount of the exterior protective layer 27A is 0.2 to 0.8 kg / m 2 (Film thickness: approximately 0.2-0.8 mm) can be set to 0.3-0.5 kg / m². 2 (Film thickness: approximately 0.3-0.5 mm)

[0073] Furthermore, the structural wall 1, which serves as a partition in the house in this embodiment, can also be implemented with its configuration changed to the following form.

[0074] In the structural wall 1 of this embodiment, the lightweight panel 10 is made of polystyrene foam (EPS), which is easy to mold by bead foaming. However, any lightweight panel can be used for the lightweight panel 10. Polymer foams and inorganic foams can be used as the material for the lightweight panel. As polymer foams, polystyrene foam, polyurethane foam, polyphenol foam, polyolefin foam (polyethylene foam, polypropylene foam), etc. can be used. As inorganic foams, aluminum hydroxide-based foam (Talbocell), cement-based foam (ALC (autoclaved lightweight aerated concrete)), etc. can also be used.

[0075] In the structural wall 1 of this embodiment, the lightweight panel 10 uses EPS with an expansion ratio of 50 times, but EPS with an expansion ratio of 30 to 60 times can be used for the lightweight panel 10. If the expansion ratio of EPS is less than 30 times, a large amount of resin (beads) will be required, which may be uneconomical. On the other hand, if the expansion ratio of EPS exceeds 60 times, the strength will be weak, and there is a risk of plastic deformation when subjected to impact. In another embodiment, the expansion ratio of EPS can be 40 to 55 times.

[0076] In the lightweight panels 10 of the structural wall 1 of the sauna room 100 in this embodiment, the lightweight panels 10 to be joined are joined together, and the gaps between the lightweight panels 10 are sealed using a caulking material as a joining material 20. However, if there are gaps between the lightweight panels 10 to be joined, a panel made of the same material as the lightweight panels 10 can be processed to the size that fills the gap, thereby sealing the gaps between the lightweight panels 10.

[0077] Furthermore, other technical concepts that can be understood from the structural wall 1 of this embodiment are described below.

[0078] A sauna room characterized by having an interior protective layer formed from a glossy synthetic resin emulsion paint containing metallic pigments (JIS K 5660) and an exterior protective layer formed from an acrylic emulsion paint containing inorganic pigments (JIS A 6909 Exterior Thin Coating Material E). This improves the heat retention of the sauna room.

[0079] A box-type store characterized by having an interior protective layer formed from a glossy synthetic resin emulsion paint (JIS K 5660) and an exterior protective layer formed from a high solar reflectance paint for roofs (JIS K 5675). This allows for increased water resistance inside the store and suppression of the rise in room temperature inside the store. [Explanation of Symbols]

[0080] 1 structural wall 10 Lightweight Panels 11 Butt joint 12 Fitting part 13 Notched recess 14. Protruding part 15 Joint part 16 Joint 17 Inset part 20 Bonding material 21 Inner coating layer 22 Interior protective layer 22A Interior protective layer 26 Outer coating layer 27 Exterior protective layer 27A Exterior protective layer 100 sauna rooms 100A Box-type store 101 Hinged door 102 Skylight 103 Seat 107 Sales counter 106 Pedestal 110 Peripheral wall 111 Floor Panels 112 Side Panel 113 Top panel 114 Top side panel 120 Front wall 130 Back wall

Claims

1. The structure consists of lightweight panels that separate the interior of the house from the exterior. The lightweight panel and the adjacent lightweight panel are joined together. Each of the butt joint surfaces of the two lightweight panels is provided with a fitting portion along the butt joint surface. The joint formed by butting the abutting surfaces of the two lightweight panels and fitting the fitting portion is joined by a joining material that joins the two lightweight panels. It consists of a cylindrical peripheral wall with the front-to-back direction as its axis, and a front wall and a rear wall that cover the front and rear surfaces enclosed by the peripheral wall, respectively. The lightweight panels constituting the peripheral wall utilize, due to differences in their placement and the shape of the fitting portions provided on the abutting surfaces, a floor panel positioned on the lower side of the peripheral wall, side panels positioned on the sides, a top panel positioned on the upper side, and upper side panels positioned on the left and right sides of the top panel. The floor panel has a notched recess formed along the front-to-back direction on the abutting surfaces at both the left and right ends, which serves as a fitting portion, with a rectangular cross-section. The side panels are positioned on the left and right sides of the peripheral wall, and the abutting surface of the lower end has a protruding projection with a protruding center in its cross-section as the fitting portion, and the abutting surface of the upper end has a notched recess with a rectangular cross-section as the fitting portion. The top panel is positioned above the peripheral wall, and at the abutting surfaces of both the left and right ends, a notch is formed along the front-to-back direction, which serves as the fitting portion, with the inner side of the peripheral wall being cut out. The upper side panels are positioned on the left and right sides of the top panel, with a protruding portion formed on the abutting surface of the lower end as the fitting portion, and a notched portion formed on the abutting surface of the upper end, where the outer side of the peripheral wall is cut out as the fitting portion. An inner coating layer is formed on the side surface of the lightweight panel that faces the interior of the house, and an interior protective layer is provided on the surface of the inner coating layer, and the interior protective layer contains a metallic pigment. An outer covering layer is formed on the side surface of the lightweight panel that faces the exterior of the house, and an exterior protective layer is provided on the surface of the outer covering layer, and the exterior protective layer contains an inorganic pigment. A house characterized by the following features.

2. The house described in claim 1 is a sauna room, A sauna room characterized by having a heater inside for heating the interior.

3. A structural wall that is positioned as a partition to separate the interior of a house from the exterior, It consists of a cylindrical peripheral wall with the front-to-back direction as its axis, and a front wall and a rear wall that cover the front and rear surfaces enclosed by the peripheral wall, respectively. The lightweight panels constituting the peripheral wall include, due to differences in their placement and the shape of the fitting portions provided on the abutting surfaces, floor panels positioned on the lower side of the peripheral wall, side panels positioned on the sides, top panels positioned on the upper side, and upper side panels positioned on the left and right sides of the top panel. The floor panel has a notched recess formed along the front-to-back direction on the abutting surfaces at both the left and right ends, which serves as a fitting portion, with a rectangular cross-section. The side panels are positioned on the left and right sides of the peripheral wall, and the abutting surface of the lower end has a protruding projection with a protruding center in its cross-section as the fitting portion, and the abutting surface of the upper end has a notched recess with a rectangular cross-section as the fitting portion. The top panel is positioned above the peripheral wall, and at the abutting surfaces of both the left and right ends, a notch is formed along the front-to-back direction, which serves as the fitting portion, with the inner side of the peripheral wall being cut out. The upper side panels are positioned on the left and right sides of the top panel, with a protruding portion formed on the abutting surface of the lower end as the fitting portion, and a notched portion formed on the abutting surface of the upper end, where the outer side of the peripheral wall is cut out as the fitting portion. A structural wall characterized by the following features.

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