Perimeter structure

Abstract

To provide a perimeter structure capable of independently setting heights of a top plate of an upper surface of an inner side of a concave part arranged in an upper part of an edge of a room and a ceiling.SOLUTION: A perimeter structure of a room provided with a pair of opposite walls (3, 4) facing each other is provided with: a wall (10) provided between the pair of opposite walls (3, 4); a lateral beam member (20) arranged between the pair of opposite walls (3, 4) at a position apart from the wall (10) to a center direction of the room (2); at least one auxiliary beam (30) arranged between the wall (10) and the lateral beam member (20) at a position higher than a lower end of the lateral beam member (20); a top plate (45) attached under the auxiliary beam (30) along the wall (10) at a position higher than the lower end of the lateral beam member (20).SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a perimeter structure. [Background technology]

[0002] Patent Document 1 discloses a recess provided at the top of the edge of a room, the recess opening downward. According to Patent Document 1, a wall is erected at the edge of the room, a hanging beam hangs from above from the wall at a position away from the center of the room, a first siding is fixed to the lower end of the hanging beam, and gypsum board is attached to the first siding, forming the ceiling of the room. A second siding is fixed to the side of the hanging beam so as to extend horizontally, and a third siding is fixed to the top of the wall so as to extend horizontally, with the second and third sidings being at the same height. Plywood is attached to the undersides of the second and third sidings with nails, forming the inner upper surface of the recess. A standing board is attached to the side of the hanging beam and the first siding. The standing board faces the top of the wall, and the standing board and the top of the wall form the inner side surfaces of the recess. Since both the plywood forming the top surface of the inside of the recess and the ceiling are supported by the hanging beams, the height of the plywood forming the top surface of the inside of the recess must be higher than the ceiling. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 8-77810 Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE INVENTION It is therefore an object of the present invention to enable the height of the ceiling and the top plate that forms the inner upper surface of a recess provided at the top of the edge of a room to be set independently. [Means for solving the problem]

[0005] The reference numerals in parentheses below refer to FIGS. 1 to 3.

[0006] In order to solve the above problems, according to claim 1, A perimeter structure for a room (2) having a pair of opposing walls (3, 4) facing each other, a wall (10) provided between the pair of opposing walls (3, 4); a cross member (20) installed between the pair of opposing walls (3, 4) at a position away from the wall (10) toward the center of the room (2); At least one auxiliary beam (30) installed between the wall (10) and the cross member (20) at a position higher than the lower end of the cross member (20); a top plate (45) attached below the auxiliary beam (30) along the wall (10) at a position above the lower end of the cross member (20); A perimeter structure is provided.

[0007] According to claim 1 as described above, the load of the top plate (45) is transmitted to the cross member (20) by the auxiliary beam (30), and further transmitted to the opposing walls (3, 4) by the cross member (20). In other words, no hanging beams supporting the ceiling are used to transmit the load of the top plate (45). Therefore, the ceiling height in the center of the room (2) beyond the cross member (20) is not affected by the auxiliary beam (30) and the top plate (45), and the ceiling height can be set independently of the height of the top plate (45). For example, the ceiling height can be set to be equal to or greater than the height of the auxiliary beam (30). Since the load of the top plate (45) is transmitted to the opposing walls (3, 4) by the auxiliary beams (30) and the cross members (20), the top plate (45) is stable and has high robustness. Since the top plate (45) is disposed above the lower end of the cross member (20), the space (60) below the top plate (45) can become a recess that is open downward.

[0008] According to claim 2, 10. The perimeter structure according to claim 1, The opposing walls (3, 4) are load-bearing walls, The cross member (20) is a small wall panel, Both ends of the small wall panel are joined to the opposing walls (3, 4). A perimeter structure is provided.

[0009] According to claim 2, the opposing walls (3, 4) bear the load of the top plate (45), auxiliary beams (30), and cross members (20), and because the opposing walls (3, 4) are load-bearing walls, the top plate (45) is stable and has high robustness. Because the cross members (20) are small wall panels, the top plate (45) and auxiliary beams (30) are stable and have high robustness.

[0010] According to claim 3, The perimeter structure according to claim 1 or 2, a support member (31) joined to the surface of the cross member (20) facing the wall (10); The auxiliary beam (30) rests on the support member (31) and is fixed to the support member (31). A perimeter structure is provided.

[0011] According to claim 3 as described above, the auxiliary beam (30) is placed on the support material (31) and fixed to the support material (31), which contributes to improving the stability of the auxiliary beam (30) and the joint strength between the auxiliary beam (30) and the cross member (20).

[0012] According to claim 4, The perimeter structure according to claim 1 or 2, a base member (40) that is joined to the lower surface of the auxiliary beam (30) along the wall (10) at a position above the lower end of the cross member (20), and that is interposed between the lower surface of the auxiliary beam (30) and the top plate (45), and to which the top plate (45) is joined; a hanging plate (50) that is joined to the base material (40) and hangs down from the base material (40) between the cross member (20) and the wall (10), A space (60) enclosed by the wall (10), the hanging board (50) and the top board (45) is open downward. A perimeter structure is provided.

[0013] According to claim 4 as described above, the fact that the hanging board (50) is joined to the base material (40) rather than the base material (40) contributes to improving the joining strength of the hanging board (50) to the base material (40) and improving the stability of the hanging board (50). The space (60) enclosed by the wall (10), the hanging board (50) and the top board (45) is open downward, so that the space (60) can be used to accommodate a curtain rail, a roller curtain unit, a blind unit, an indirect lighting device, or the like.

[0014] According to claim 5, 5. The perimeter structure according to claim 4, a frame (53) fixed to the surface of the hanging board (50) facing the cross member (20) along the lower edge of the surface; and a gypsum board (54) attached to the lower surface of the frame member (53) and the lower end of the cross member (20). A perimeter structure is provided.

[0015] According to claim 5 as described above, the frame material (53) is fixed to the surface of the hanging board (50) along the lower edge of the surface facing the cross member (20), which contributes to fixing the gypsum board (54) to the lower end of the hanging board (50).

[0016] According to claim 6, The perimeter structure according to claim 1 or 2, a protruding base member (70) that protrudes from the lower edge of the surface of the horizontal member (20) opposite the wall (10) toward the center of the room (2) and is spaced downward from the ceiling (7) of the room (2); A space (80) enclosed by the ceiling (7), the horizontal member (20) and the overhanging base member (70) of the room (2) is open toward the center of the room (2). A perimeter structure is provided.

[0017] According to claim 6 as described above, the space (80) enclosed by the ceiling (7), cross members (20) and overhanging base material (70) is open toward the center of the room (2), so that the space (80) can be used to accommodate indirect lighting devices, etc.

[0018] According to claim 7, 7. The perimeter structure according to claim 6, a base member (40) that is joined to the lower surface of the auxiliary beam (30) along the wall (10) at a position above the lower end of the cross member (20), and that is interposed between the lower surface of the auxiliary beam (30) and the top plate (45), and to which the top plate is joined; a hanging plate (50) that is joined to the base material (40) and hangs down from the base material (40) between the cross member (20) and the wall (10); a frame (53) fixed to the surface of the hanging board (50) facing the cross member (20) along the lower edge of the surface; and a gypsum board (54) attached to the underside of the frame member (53), the lower end of the cross member (20), and the underside of the overhang base member (70), A second space (60) enclosed by the wall (10), the hanging board (50) and the top board (45) is open downward. A perimeter structure is provided.

[0019] According to claim 7 as described above, the fact that the hanging board (50) is joined to the base material (40) rather than the base material (40) contributes to improving the joining strength of the hanging board (50) to the base material (40) and improving the stability of the hanging board (50). The frame (53) is fixed to the face of the drop board (50) along the lower edge thereof facing the cross member (20), which contributes to the fixing of the gypsum board (54) to the lower end of the drop board (50). Such gypsum boards (54) close the space between the hanging boards (50) and the cross members (20) from below. The gypsum boards (54) form a ceiling (9) extending from the bottom end of the hanging boards (50) to the tip of the extension base material (70), and the ceiling (9) is lower than the ceiling (7) in the center of the room (2). In other words, a raised ceiling is constructed. [Effects of the Invention]

[0020] According to the present invention, the height of the ceiling can be set independently of the height of the tabletop. [Brief explanation of the drawings]

[0021] [Figure 1] FIG. 1 is a perspective view showing the upper corner of a window as seen from inside a room in a building. [Figure 2] Figure 2 is a schematic floor plan of the room. [Figure 3] Figure 3 is a cross-sectional view showing the perimeter structure of a room. DETAILED DESCRIPTION OF THE INVENTION

[0022] Hereinafter, embodiments will be described with reference to the drawings. Features and technical effects of the embodiments will be understood from the following detailed description and drawings. However, the scope of the present invention is not limited to the embodiments disclosed below. Because the drawings are provided for illustrative purposes only, the scope of the present invention is not limited to the examples in the drawings.

[0023] 1 is a perspective view showing an upper corner of a window 6 as seen from inside a room 2 of a building such as a house, etc. FIG.

[0024] The building can be made of wood. Compared to reinforced concrete and steel-reinforced concrete structures, wooden structures require less energy from producing the raw materials to dismantling and disposing of the building, so this building can contribute to promoting carbon neutrality, realizing a decarbonized society, and achieving the Sustainable Development Goals.

[0025] The building may have a wall structure or a frame structure, or both. The building may be constructed using panel construction, frame construction, frame panel construction, or frame wall construction, or a combination of two or more of these. In one example, the building is a wooden house with a wall structure constructed using a wood panel adhesive construction method. The building is multi-story, but may also be single-story. A wall structure refers to one in which the weight of the building and seismic forces are supported by the walls.

[0026] As shown in Figures 1 and 2, room 2 is constructed in a building. Room 2 is constructed on the first floor of the building, but may be installed on the second floor or higher. Room 2 has wall 3 on its west side, wall 4 on its east side, wall 5 on its north side, window 6 on its north side, ceiling 7 on its top surface, and a floor on its bottom surface. The directions that walls 3 to 5 and window 6 face are not limited to west, east, north, and south, respectively, and may be other directions.

[0027] Wall 3 and wall 4 face each other, wall 5 and window 6 face each other, and ceiling 7 and floor face each other. The interior space of room 2 is enclosed by these walls 3, 4, 5, window 6, ceiling 7, and floor. Walls 3, 4, and 5 may be either exterior or interior walls of the building. If the building has a wall structure, walls 3, 4, and 5 are part of the structure that bears the building's weight and seismic forces, i.e., shear walls. In particular, if the building is constructed using the wood panel adhesive construction method, walls 3, 4, and 5 have one or more wall panels as structural members. The wall panel has a rectangular frame formed by assembling a pair of wooden horizontal frames and a pair of wooden vertical frames into a rectangular frame shape, and wooden plywood attached to the front and rear of the frame. If necessary, the wall panel may have one or more wooden crosspieces attached to the rectangular frame on the inside.

[0028] Room 2 faces the outdoors through window 6. Window 6 is located further north than the south exterior face 8 of the building. Window 6 is located further north than the south ends of walls 3 and 4 on the west side. With regard to the opening and closing method of window 6, window 6 may be a fixed window, sliding window, vertical sliding window, horizontal sliding window, casement window, projection window, sash window, or folding window, or a combination of two or more of these types of window. With regard to the height of window 6, window 6 may be a French window or a waist window.

[0029] FIG. 3 is a cross-sectional view showing the perimeter structure near the window 6 of the room 2. The perimeter structure includes a window 6, a ceiling 7 (particularly the portion of the ceiling 7 near the window 6), cross members 10, plasterboard 11, cross members 20, plasterboard 22, plywood 23, plasterboard 24, auxiliary beams 30, support members 31, base members 40, top board 45, plasterboard 47, hanging boards 50, plasterboard 52, frame members 53, plasterboard 54, overhang base members 70, and plasterboards 72, 73.

[0030] A cross member 10 is installed between walls 3 and 4 at the southern edge of room 2, and a window 6 is installed below the cross member 10. If the building is a wall-type structure, both ends of the cross member 10 are joined to walls 3 and 4. If the building is a wall-type structure, the cross member 10 may be a small wall or a hanging wall, for example, a small wall panel or a hanging wall panel used in wood panel construction. Small wall panels and hanging wall panels are structural materials. If the building is a frame structure, both ends of the cross member 10 are joined to columns. If the building is a frame structure, the cross member 10 may be a small wall or a hanging wall, for example, a small wall or a hanging wall that also serves as a girder. The inner and outer surfaces of the cross member 10 face opposite each other, with the outer surface of the cross member 10 facing outdoors and the inner surface of the cross member 10 facing indoors, and gypsum board 11 is attached to the inner surface. It is also possible that the window 6 and the opening are not provided below the cross member 10, and a wall is provided below the cross member 10.

[0031] Girths 11 are installed on top of cross members 10 along cross members 10 between walls 3 and 4. If the building has a wall structure, girths 11 may be so-called half-girths, and girths 11 may be joined to walls 3 and 4. If the building has a frame structure, girths 11 are joined to columns.

[0032] An upper floor 220 is laid on the ceiling 7 of the room 2, and the periphery of the floor 220 is fixed to the walls 3, 4, 5 and the cross members 10. If the building is a wall-type structure, the floor 220 is made up of one or more floor panels used in a wood panel construction method. If the building is a frame structure, it is made up of multiple joists and floor panels.

[0033] The upper ends of a plurality of hanging members 240 made of wooden square timbers are fixed to floor 220, and these hanging members 240 hang down from floor 220. If room 2 is constructed on the top floor, or if the building is a single-story building, the upper ends of hanging members 240 are fixed to the roof, and these hanging members 240 hang down from the roof.

[0034] The ceiling 7 is fixed below these hanging materials 240. The ceiling 7 extends horizontally in a flat shape. Heat insulating material 230 is laid all over the ceiling 7. The ceiling 7 has rough girders 7a and gypsum boards 7b. The rough girders 7a are arranged in a grid pattern along the horizontal plane and are fixed to the lower ends of the hanging materials 240. The gypsum boards 7b are attached to the underside of the rough girders 7a.

[0035] A cross member 20 is installed between the walls 3 and 4 along the edge of the ceiling 7 at a position indoors away from the window 6. The edge of the ceiling 7 here refers to the edge closer to the window 6. Both ends of the cross member 20 are joined to structural members, and the cross member 20 is firmly supported by the structural members. Specifically, if the building has a wall structure, both ends of the cross member 20 are joined to the walls 3 and 4, respectively, and if the building has a frame structure, the cross member 20 is a minor beam, and both ends of the cross member 20 are joined to a major beam.

[0036] If the building has a wall structure, the cross member 20 may be a small wall, for example, a small wall panel used in a wood panel construction method. The small wall panel has a frame member 20a and a pair of plywood panels 20b. The frame member 20a is framed in a rectangular shape. The plywood panels 20b are attached to both sides of the frame member 20a. Such a small wall panel is a structural material.

[0037] Gypsum board 22, plywood 23, and gypsum board 24 are stacked in this order on a first side surface of cross member 20, and these are fixed to the first side surface of cross member 20. Here, the first side surface of cross member 20 refers to the side opposite to the side facing cross member 10. It is also possible that gypsum board 22 and plywood 23 are not provided, and gypsum board 24 is directly attached to the first side surface of cross member 20.

[0038] A support member 31 made of wooden square timber is installed horizontally between walls 3 and 4. Both ends of the cross member 20 are joined to structural members, and the cross member 20 is firmly supported by the structural members. Specifically, if the building has a wall structure, both ends of the support member 31 are joined to walls 3 and 4, respectively, and if the building has a frame structure, both ends of the support member 31 are joined to girders. The support member 31 is positioned between the cross member 10 and the cross member 20, close to the cross member 20. The support member 31 contacts the second side surface of the cross member 20 along the entire longitudinal direction. The support member 31 is joined to the second side surface of the cross member 20 with an adhesive or the like. Here, the second side surface of the cross member 20 refers to the surface facing the cross member 10. Note that both ends of the support member 31 may not be joined to the walls 3 and 4, and the support member 31 may be joined to the second side surface of the cross member 20. Alternatively, the support member 31 may not be joined to the second side surface of the cross member 20, and both ends of the support member 31 may be joined to the walls 3 and 4.

[0039] One or more auxiliary beams 30 are installed between the cross members 10 and 20. One end of the auxiliary beam 30 is joined to the cross member 10, and the other end of the auxiliary beam 30 rests on the support member 31 and is fixed to the support member 31, and is in contact with the cross member 20. The other end of the auxiliary beam 30 may be joined to the cross member 20. The auxiliary beam 30 is arranged above the lower ends of the cross members 10 and 20.

[0040] The base material 40 is joined to the underside of the auxiliary beam 30 at a position above the lower ends of the cross members 10 and 20. The base material 40 is positioned away from the cross member 20 towards the cross member 10 and closer to the cross member 10. The base material 40 is butted against the cross member 10 with gypsum board 11 placed between the base material 40 and the cross member 10. The base material 40 is installed horizontally from wall 3 to wall 4. Both ends of the base material 40 may be joined to the walls 3 and 4. The base material 40 is a frame material assembled in a lattice pattern. That is, the base material 40 has a pair of long crosspieces 40a and multiple short crosspieces 40b, the pair of long crosspieces 40a are erected between the walls 3, 4 and joined to the underside of the auxiliary beam 30, the multiple short crosspieces 40b are arranged between the long crosspieces 40a at intervals in the longitudinal direction of the long crosspieces 40a, and these short crosspieces 40b are joined to the long crosspieces 40a while being bent over the long crosspieces 40a. "Being bent over the long crosspieces 40a" means that the end faces of the short crosspieces 40b in the longitudinal direction of the short crosspieces 40b abut against the long crosspieces 40a.

[0041] A top plate 45 is attached below the base material 40 via the base material 40 at a position above the lower ends of the cross members 10 and 20. Specifically, the top plate 45 is attached to the underside of the base material 40 from wall 3 to wall 4, and the base material 40 is sandwiched between the top plate 45 and the underside of the auxiliary beam 30. The top plate 45 is joined to the base material 40 with screws or adhesive. The top plate 45 is made of one piece of plywood. The number of pieces of plywood may be two or more. A gypsum board 47 is attached and fixed to the underside of the top plate 45.

[0042] The drop board 50 is disposed between the cross members 10 and 20 and hangs down from the base material 40. The drop board 50 is joined to the base material 40, overhanging the base material 40 and the top plate 45. The drop board 50 overhanging the base material 40 and the top plate 45 means that the side end faces of the base material 40 and the top plate 45 in the width direction of the base material 40 and the top plate 45 abut against the drop board 50. In the example shown in FIG. 3, the drop board 50 is made of two pieces of plywood. The number of plywood sheets may be one, or three or more.

[0043] The height of the lower end of the hanging board 50 is aligned with the height of the lower end of the cross member 20. The height of the lower end of the hanging board 50 is aligned with the height of the lower end of the cross member 10, or is higher than the lower end of the cross member 10 by the thickness of the gypsum board 54 described below.

[0044] The hanging board 50, the cross member 10, and the top board 45 form a so-called curtain box. The hanging board 50 and the cross member 10 form a space 60 between them. The space 60 is the internal space of the curtain box. The top of the space 60 is closed by the top board 45, and the bottom end of the space 60 is open. The space 60 is a recess that opens downward. Both ends of the space 60 are closed by the walls 3 and 4. Alternatively, both ends of the space 60 are closed by end members fixed to the walls 3 and 4.

[0045] A gypsum board 47 is attached to the underside of the top board 45 within the space 60. A gypsum board 52 is attached to a first opposite surface of the hanging board 50 within the space 60. Here, the first opposite surface of the hanging board 50 refers to the surface facing the cross member 10.

[0046] A curtain rail is attached to the underside of the tabletop 45 via plasterboard 47. Instead of a curtain rail, a roller curtain unit or a blind unit may be attached to the underside of the tabletop 45 via plasterboard 47. Fixtures such as screws for fixing the curtain rail, roller curtain unit or blind unit extend beyond the tabletop 45 to the base material 40. Note that an indirect lighting device may be attached to the tabletop 45, the horizontal member 10 or the hanging board 50 within the space 60. In particular, when a wall, rather than a window 6, is installed under the horizontal member 10, an indirect lighting device may be attached to the tabletop 45, the horizontal member 10 or the hanging board 50 within the space 60 without installing a curtain rail, roller curtain unit or blind unit.

[0047] The frame member 53 is joined to the second opposite side of the hanging board 50 with screws or adhesive. Here, the second opposite side of the hanging board 50 refers to the side facing the cross member 20. The frame member 53 extends horizontally from wall 3 to wall 4 along the lower edge of the second opposite side of the hanging board 50. The height of the lower surface of the frame member 53 is aligned with the height of the lower end of the hanging board 50 and the lower end of the cross member 10.

[0048] The overhanging base material 70 extends horizontally from the lower edge of the first side surface of the cross member 20 toward the center of the room 2. In other words, the overhanging base material 70 extends horizontally from the lower edge of the first side surface of the cross member 20 in the opposite direction to the direction toward the cross member 10. The overhanging base material 70 is bent against the plywood 23 and joined to the plywood 23 with adhesive, screws, or the like. The overhanging base material 70 being bent against the plywood 23 means that the end face in the width direction of the overhanging base material 70 is abutted against the plywood 23. The overhanging base material 70 is a frame material assembled in a lattice pattern. Note that if the gypsum board 22 and the plywood 23 are not provided, the overhanging base material 70 may be bent against the cross member 20 and joined to the first side surface of the cross member 20 with adhesive, screws, or the like.

[0049] The height of the underside of the overhanging base material 70 is aligned with the height of the underside of the frame member 53, the lower end of the hanging board 50, and the lower end of the cross member 10. Gypsum board 54 is attached to and fixed to the underside of the overhanging base material 70, the underside of the frame member 53, the lower end of the hanging board 50, and the lower end of the cross member 10, from wall 3 to wall 4. Gypsum board 54 closes the cavity between the hanging board 50 and the cross member 20 from below.

[0050] A gypsum board 73 is attached and fixed to the upper surface of the overhang base material 70, and a gypsum board 72 is attached and fixed to the tip end surface of the overhang base material 70.

[0051] The overhanging base material 70 and gypsum board 73 form the ceiling 9 at the edge of the room 2 near the window 6. There is a step between the ceiling 9 and the ceiling 7, and the ceiling 9 is lower than the ceiling 7. In other words, the ceiling structure of the room 2 is a folded ceiling structure.

[0052] The overhanging base member 70, the ceiling 7, and the cross member 20 form a so-called cove lighting box. The overhanging base member 70 and the ceiling 7 form a space 80 between them. The space 80 is the interior space of the lighting box. The back of the space 80 is closed by the cross member 20, and the front of the space 80 is open to the inside of the room 2. The space 80 is a recess that opens to the inside of the room 2. Both ends of the space 80 are closed by the walls 3 and 4. Alternatively, both ends of the space 80 are closed by end members fixed to the walls 3 and 4.

[0053] The illuminator is placed on the overhanging base material 70 via plasterboard 73 and fixed to the overhanging base material 70 with screws or the like. The illuminator emits light toward the ceiling 7. In other words, the illuminator is an indirect illuminator also known as cove lighting.

[0054] The joists 7a, the cross members 10, the cross members 20, the plywood 23, the auxiliary beams 30, the support members 31, the base material 40, the top board 45, the hanging board 50, the frame members 53, and the overhang base material 70 may be made of wood. In recent years, there has been a demand for a decarbonized society through the promotion of carbon neutrality, which reduces carbon dioxide emissions to virtually zero, and for the Sustainable Development Goals (SDGs), and the construction industry is also making efforts to build buildings out of wood, which reduces carbon dioxide emissions. If wood is used as the material for the siding 7a, cross members 10, cross members 20, plywood 23, auxiliary beams 30, support members 31, base materials 40, top board 45, drop board 50, frame materials 53 and overhanging base materials 70, then the siding 7a, cross members 10, cross members 20, plywood 23, auxiliary beams 30, support members 31, base materials 40, top board 45, drop board 50, frame materials 53 and overhanging base materials 70 can contribute to promoting carbon neutrality, realizing a carbon-free society and achieving the Sustainable Development Goals.

[0055] In the perimeter structure configured as described above, the load of the base material 40 and the top plate 45 is transmitted to the cross members 20 by the auxiliary beams 30, and further transmitted to the walls 3 and 4 by the cross members 20. In other words, the load of the base material 40 and the top plate 45 is not transmitted using the hanging members 240 supporting the ceiling 7 or the like. Therefore, the height of the ceiling 7 in the center of the room 2, which is further from the cross members 20, is not affected by the auxiliary beams 30, and the height of the ceiling 7 can be set independently of the height of the top plate 45. For example, the height of the ceiling 7 can be set to be equal to or greater than the height of the auxiliary beams 30. This contributes to the integration of the curtain box and the cove lighting box, which in turn contributes to improving the design of the room 2.

[0056] Since the load of the base material 40 and the top plate 45 is transmitted to the walls 3, 4 by the auxiliary beams 30 and the cross members 20, the base material 40 and the top plate 45 are stable and highly robust.

[0057] Since the base material 40 and the top plate 45 are positioned above the lower ends of the cross members 20, the space 60 below the top plate 45 becomes a recess that opens downward. The space 60 is used as a storage space for a curtain rail, a roller curtain unit, a blind unit, or an indirect lighting device.

[0058] The walls 3 and 4 bear the load of the base material 40, top plate 45, auxiliary beam 30, and cross member 20, and because the walls 3 and 4 are load-bearing walls, the base material 40 and top plate 45 are stable and highly robust. Because the cross member 20 is a small wall panel, the base material 40, top plate 45, and auxiliary beam 30 are stable and highly robust.

[0059] The auxiliary beam 30 resting on the support member 31 and being fixed to the support member 31 contributes to improving the stability of the auxiliary beam 30 and the joint strength between the auxiliary beam 30 and the cross member 20 .

[0060] The fact that the drapery board 50 is joined to the base material 40 rather than to the base material 40 contributes to improving the joining strength of the drapery board 50 to the base material 40 and improving the stability of the drapery board 50 .

[0061] The fact that the frame 53 is fixed along the lower edge of the surface of the hanging board 50 facing the cross member 20 contributes to fixing the gypsum board 54 to the lower end of the hanging board 50. Such gypsum board 54 closes the space between the hanging board 50 and the cross member 20 from below. The gypsum board 54 forms the ceiling 9 from the lower end of the hanging board 50 to the tip of the overhanging base member 70, and this ceiling 9 is lower than the ceiling 7 in the center of the room 2. In other words, a raised ceiling is constructed. [Explanation of symbols]

[0062] 2 rooms 3,4 Opposite walls 6. Windows 7. Ceiling 10 Horizontal material (wall) 20 Cross beam 30 Auxiliary beam 31 Support material 40 Undercoat 45 Top plate 50 Drop board 53 Frame material 54 Gypsum board 60 spaces 70 Overhang base material 80 spaces

Claims

1. A perimeter structure for a room having a pair of opposing walls facing each other, a wall provided between the pair of opposing walls; A horizontal member installed between the pair of opposing walls at a position away from the wall toward the center of the room; At least one auxiliary beam installed between the wall and the cross member at a position above the lower end of the cross member; a top plate attached below the auxiliary beam along the wall at a position above the lower end of the cross member; A perimeter structure characterized by:

2. 10. The perimeter structure of claim 1, The opposing wall is a load-bearing wall, The cross member is a small wall panel, Both ends of the small wall panel are joined to the opposing wall. A perimeter structure characterized by:

3. 3. The perimeter structure according to claim 1 or 2, A support member is provided which is joined to a surface of the cross member facing the wall, The auxiliary beam rests on the receiving member and is fixed to the receiving member. A perimeter structure characterized by:

4. 3. The perimeter structure according to claim 1 or 2, a base material that is joined to the lower surface of the auxiliary beam along the wall at a position above the lower end of the cross member, and is interposed between the lower surface of the auxiliary beam and the top plate, and to which the top plate is joined; a hanging board that is joined to the base material between the cross member and the wall and hangs down from the base material; The space enclosed by the wall, the hanging board, and the top board is open downward. A perimeter structure characterized by:

5. 5. The perimeter structure according to claim 4, a frame member fixed to the surface of the drapery board along the lower edge thereof facing the cross member; and a gypsum board attached to the lower surface of the frame member and the lower end of the cross member. A perimeter structure characterized by:

6. 3. The perimeter structure according to claim 1 or 2, A protruding base member is provided that protrudes from the lower edge of the surface of the horizontal member opposite the wall toward the center of the room and moves downward away from the ceiling of the room, The space enclosed by the ceiling, the horizontal member, and the overhanging base member of the room is open toward the center of the room. A perimeter structure characterized by:

7. 7. The perimeter structure according to claim 6, a base material that is joined to the lower surface of the auxiliary beam along the wall at a position above the lower end of the cross member, and is interposed between the lower surface of the auxiliary beam and the top plate, and to which the top plate is joined; a hanging board that is joined to the base material between the cross member and the wall and hangs down from the base material; a frame member fixed to the surface of the drapery board along the lower edge thereof facing the cross member; A gypsum board is attached to the underside of the frame material, the lower end of the cross member, and the underside of the overhang base material, A second space enclosed by the wall, the hanging board, and the top board is open downward. A perimeter structure characterized by:

Images