Interior wall panel installation structure

Abstract

To enable installation of an inner wall panel formed as a complete body in advance in a state where position adjustment in a thickness direction is easy by work from an indoor side mainly with respect to a side wall surface to which the outer wall of a building unit is attached beforehand.SOLUTION: An inner wall panel installation structure is for installing an inner wall panel 18 on a side wall surface 9 attached to the outer wall 14 of a building unit 1 from the indoor side 17 of the building unit 1. An attachment member 33 having a panel attaching part 32 which extends in an inner-outer direction 31 surface-perpendicular to the outer wall 14 is attached to a column 2 constituting the building unit 1 in a state where the panel attaching part 32 projects closer to the indoor side 17 than the column 2. The indoor wall panel 18 is a complete body formed by attaching a surface material 18b to a panel frame 18a in advance to be integral, and fixed to the panel attaching part 32 by a fixing tool 34 in a state where a longitudinal frame 18c positioned on a side edge is in contact with the panel attaching part 32.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] This invention relates to an inner wall panel installation structure.

Background Art

[0002] Conventionally, it has been known to form an inner wall by attaching an inner wall facing material such as a gypsum board to a building unit (see, for example, Patent Document 1).

[0003] Patent Document 1 discloses a configuration in which an inner wall facing material such as a gypsum board is later attached with screws to the indoor side of a frame for an inner wall previously installed on a building unit.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In Patent Document 1, an inner wall was provided by first attaching a frame for an inner wall to a building unit and then manually attaching an inner wall facing material to this frame. Therefore, a large number of man-hours were required for the construction of the inner wall because the frame and the inner wall facing material were separately attached to the building unit. Thus, there is a desire to construct an inner wall by arranging and attaching an inner wall panel, which is formed in advance by attaching an inner wall facing material to a frame formed in a panel frame shape, to the side surface of a building unit. Regarding the manufacture of the inner wall panel, automation by a machine is intended. Thereby, the man-hours required for constructing an inner wall with respect to a building unit can be reduced.

[0006] However, if the exterior wall is already attached to the side of the building unit, the installation of the interior wall panel in the area where the exterior wall is located must be done from the interior side. Furthermore, the presence of the exterior wall prevents work from being done from the back side (the side facing the exterior wall) of the interior wall panel. Therefore, there are constraints on the installation of interior wall panels in the area where the exterior wall is present. These constraints lead to problems such as difficulty in adjusting the position of the interior wall panel in the thickness direction. Such position adjustment problems have been a cause of preventing the construction of interior walls using pre-fabricated interior wall panels.

[0007] Therefore, the main objective of the present invention is to contribute to improving the above-mentioned problems. [Means for solving the problem]

[0008] In response to the above problems, the present invention provides: An interior wall panel installation structure in which an interior wall panel is installed from the interior side of the building unit on the side wall surface to which the exterior wall of the building unit is attached, With respect to the columns constituting the building unit, the mounting member having a panel mounting portion that extends in an inward-outward direction perpendicular to the outer wall is positioned such that the panel mounting portion protrudes further inward than the column. directly It was installed, The aforementioned interior wall panel is a completed unit in which the facing material is attached to the panel frame in advance and integrated, with the vertical frame located at the side edge in contact with the panel mounting portion, and fasteners are used to fasten the panel mounting portion. In the planar direction of the inner wall panel It is characterized by being fixed in place. [Effects of the Invention]

[0009] According to the present invention, with the above configuration, the interior wall panel, which is formed as a complete unit in advance, can be installed on the side wall surface to which the exterior wall of the building unit has already been attached, in a state that makes it easy to adjust its position in the thickness direction by working from the inside. [Brief explanation of the drawing]

[0010] [Figure 1]This is a perspective view of a building unit to which the interior wall panel installation structure according to the embodiment is applied. [Figure 2] Figure 1 is an exploded perspective view showing an interior wall panel installation structure in which an interior wall panel is attached to the building unit using the mounting member (flat plate material) of the embodiment. [Figure 3] This is a cross-sectional view of the building unit with the interior wall panels attached. [Figure 4] This is a cross-sectional view showing the adjustment process for the position of the interior wall panels. [Figure 5] This is a cross-sectional view showing the adjustment process for the position of the interior wall panels. [Figure 6] This is a cross-sectional view showing the state after another interior wall panel has been installed perpendicular to the existing interior wall panel. [Figure 7] This is a cross-sectional view showing the insulation material installed inside the corner stud. [Figure 8A] This is a cross-sectional view showing the interior wall panel attached to the building unit using the mounting member (Z-shaped bracket) of another embodiment. [Figure 8B] Figure 8A shows the component diagram of the mounting member (Z-shaped bracket). Of these, (a) is a view from above, (b) is a view from the third side of the column, and (c) is a view of (b) from the panel mounting part side. [Figure 9A] This is a cross-sectional view showing the interior wall panel attached to the building unit using a mounting member (L-shaped bracket) from another embodiment. [Figure 9B] Figure 9A shows the component diagrams of the mounting member (L-shaped bracket). Of these, (a) is a view from below, (b) is a view from the panel mounting side, and (c) is a view from the column mounting side. [Figure 9C] Figure 9B is a perspective view of the mounting component (L-shaped bracket). [Figure 10] This is an exploded perspective view showing an interior wall panel installation structure using wooden bricks as shown in the comparative example. [Figure 11] This is a cross-sectional view of the building unit according to the comparative example in Figure 10, with the interior wall panel attached. [Modes for carrying out the invention]

[0011] Hereinafter, this embodiment will be described in detail with reference to the drawings.

Example

[0012] <Structure> Hereinafter, the structure of this example will be described.

[0013] Some buildings such as houses are composed of unit buildings. The unit building is a building that can be constructed in a short period of time by transporting the building unit 1 (Fig. 1) prefabricated in a factory to the construction site and arranging them side by side or stacking them on top of each other at the construction site for assembly. The building unit 1 is a box-shaped unit building structure for constructing a unit building and is substantially rectangular parallelepiped in shape.

[0014] As shown in Fig. 1, the building unit 1 has a unit frame with a box girder structure as a skeleton part inside. The unit frame is mainly composed of four columns 2, four ceiling beams 3, and four floor beams 4.

[0015] The four columns 2 are arranged at the four corners of the unit frame. The four ceiling beams 3 connect the upper ends of the four columns 2 in a rectangular shape to form a ceiling frame. The four floor beams 4 connect the lower ends of the four columns 2 in a rectangular shape to form a floor frame. For the columns 2, for example, square steel pipes with a rectangular cross-section are used. For the ceiling beams 3 and floor beams 4, for example, steel sections with an inward C-shaped cross-section are used. A metal joint piece 5 is used for the connection between the column 2, the ceiling beam 3, and the floor beam 4.

[0016] The columns 2 extend in the vertical direction 6, the ceiling beams 3 and floor beams 4 extend in the horizontal direction, and the building unit 1 is substantially rectangular parallelepiped in shape. The substantially rectangular parallelepiped building unit 1 has a horizontal and parallel ceiling surface and floor surface installed at intervals in the vertical direction 6, and four side surfaces or side wall surfaces 9 surrounding the periphery of the ceiling surface and floor surface.

[0017] The ceiling surface of building unit 1 is constructed in a roughly rectangular shape in plan view by installing multiple ceiling joists 11 parallel to each other inside the ceiling frame, straddling a pair of opposing ceiling beams 3, and attaching ceiling surface material to the underside.

[0018] The floor surface of building unit 1 is constructed in a roughly rectangular shape in plan view by installing multiple floor joists 12 parallel to each other inside the floor frame, straddling a pair of opposing floor joists 4, and then attaching flooring material to the upper surface.

[0019] The four sides or side walls 9 of the building unit 1 are configured in a substantially rectangular shape in a side view by a pair of adjacent columns 2 and upper and lower ceiling beams 3 and floor beams 4 that horizontally connect the upper and lower ends of the pair of columns 2.

[0020] Then, as shown in Figure 2 (Figure 3), an exterior wall 14 is attached to the side wall surface 9 which is the outdoor side 13 of the building unit 1.

[0021] Here, the outdoor side 13 is the outside of the building, and in the case of building unit 1, it is the outside of the side wall surface 9 that does not have an adjacent building unit 1. The side wall surface 9 of the outdoor side 13 is the surface that faces the outdoor side 13 among the four vertical surfaces formed around the building unit 1.

[0022] The exterior wall 14 is a protective component of the building that is attached to the side wall surface 9 facing the outdoor side 13 of the building unit 1, and constitutes the building's exterior design.

[0023] The exterior wall 14 is attached to the side wall surface 9 on the outdoor side 13 of the building unit 1, to exterior wall mounting members such as intermediate studs 15 and corner studs 16 which are installed parallel to the columns 2. The exterior wall mounting members are metal vertical members that extend in the vertical direction 6.

[0024] The intermediate stud 15 is an exterior wall mounting member installed at an intermediate position on the side wall surface 9, away from the column 2, and is installed to connect the ceiling beam 3 and the floor beam 4. The intermediate stud 15 is an inward-facing C-shaped cross section member that is open to the interior side 17. The interior side 17 is the side that becomes the interior of the building unit 1 or the building.

[0025] The corner studs 16 are exterior wall mounting members installed on both sides of the side wall surface 9, close to the columns 2, and are attached to connect the upper and lower joint pieces 5. The corner studs 16 are J-shaped or L-shaped members with open sides on the interior side 17 and the side facing the columns 2.

[0026] The exterior wall 14 may be installed on the side wall surface 9 of the building unit 1 by first attaching exterior wall mounting members such as studs 15 and corner studs 16 to the side wall surface 9, and then attaching exterior wall panels one by one in sequence to these exterior wall mounting members. Alternatively, a large exterior wall 14 the size of the side wall surface 9 may be constructed in advance by attaching exterior wall panels to the exterior wall mounting members, and then the large exterior wall 14 may be attached to the building unit 1 all at once to install the exterior wall 14 on the side wall surface 9.

[0027] When the exterior wall 14 is attached to the building unit 1, distortion occurs in the building unit 1 due to the load of the exterior wall 14. Therefore, after the exterior wall 14 is attached, work is performed to adjust the distortion of the building unit 1.

[0028] Subsequently, the interior wall panels 18 are attached to the side wall surface 9 of the building unit 1 (after the exterior wall 14 has been installed and any distortion has been adjusted). Therefore, the interior wall panels 18 are installed after the exterior wall 14.

[0029] The interior wall panel 18 is a planar member (panel) that constitutes the interior wall and has approximately the same height as the interior wall. The interior wall is constructed by installing multiple interior wall panels 18 in order horizontally on the side wall surface 9, starting from the interior side 17. The interior wall panel 18 is a planar member (panel) having a panel frame 18a and a facing material 18b attached to the interior side 17 surface of the panel frame 18a. The panel frame 18a is a member having a size and shape that matches the facing material 18b.

[0030] The panel frame 18a is formed in a rectangular shape by vertical frames 18c (left frame and right frame) located on the left and right sides, and horizontal frames 18d (upper frame and lower frame) located above and below. The vertical frames 18c extend in the vertical direction 6, and the horizontal frames 18d extend in the horizontal direction. Inside the panel frame 18a, multiple horizontal bars are installed parallel to each other with spacing in the vertical direction 6 to connect the left and right vertical frames 18c. The horizontal bars extend in the horizontal direction. The facing material 18b is a rectangular, flat member that is attached to the interior side 17 of the panel frame 18a so as to cover almost the entire surface of the panel frame 18a. The facing material 18b is, for example, gypsum board.

[0031] The interior wall panels 18 are installed in multiples along the side wall surface 9 of the building unit 1, positioned behind the exterior wall 14 and spaced apart from the exterior wall 14, with respect to the side wall surface 9 of the exterior side 13 of the building unit 1.

[0032] The interior wall panel 18 is formed to a width approximately equal to the installation interval of exterior wall mounting members such as studs 15 and corner studs 16, and is installed with its side edge (vertical frame 18c) aligned with the studs 15 and corner studs 16.

[0033] Then, wooden bricks 21 are fixed to the interior side 17 of the stud 15. The wooden bricks 21 are brick-shaped pieces of wood. The wooden bricks 21 are installed by being inserted into the interior of the stud 15 from the open part of the interior side 17 of the stud 15, so that a portion of them protrudes from the stud 15 to the interior side 17. The interior wall panel 18 is positioned on the side wall surface 9 so that its back surface abuts against the interior side 17 surface of the wooden brick 21 that protrudes from the stud 15. The side edge of the interior wall panel 18 corresponding to the stud 15 is attached to the wooden brick 21 almost perpendicularly from the interior side 17 to the exterior side 13 with fixing members 22a such as screws. In this way, the side edge of the interior wall panel 18 is fixed to the stud 15. In the diagram, the wooden brick 21 is provided at one point in the middle of the vertical direction 6 relative to the stud 15, and the interior wall panel 18 is fixed to the wooden brick 21 at only one point on its side edge.

[0034] After the side edges are installed, the interior wall panel 18 is attached to the horizontal member 23, which has its upper part (such as the upper part of the vertical frame 18c or the upper horizontal frame 18d) attached to the ceiling surface or the lower surface of the ceiling beam 3, using fixing members 22b such as screws, so that it is almost perpendicular to the surface from the indoor side 17 to the outdoor side 13.

[0035] Furthermore, the interior wall panel 18 has mounting brackets 24 that extend outwards from the interior side 17 and are attached to the lower part (such as the lower horizontal frame 18d), which are then attached to the floor surface or floor beams 12, etc., using fixing members 22a such as screws, and are positioned downwards from the interior side 17.

[0036] Alternatively, the interior wall panel 18 may have a connecting member 25 attached to the back surface of the side edge on the side of the stud 15, extending laterally in the planar direction, and this connecting member 25 may be fixed to the wooden brick 21 of the stud 15 with a fixing member 22a. This connecting member 25 is a long material with approximately the same length as the vertical frame 18c of the interior wall panel 18. This connecting member 25 is used to connect interior wall panels 18 that are arranged side by side. The interior wall panels 18 arranged side by side are connected to each other via the connecting member 25 by attaching their adjacent side edges to the connecting member 25 almost perpendicular to the planar direction from the indoor side 17 to the outdoor side 13 with fixing members such as screws.

[0037] In contrast to the basic configuration described above, this embodiment has the following configuration.

[0038] (1A) On the side wall surface 9 to which the exterior wall 14 (Figures 2 and 3) of the building unit 1 is attached, an interior wall panel 18 is attached from the interior side 17 of the building unit 1, as shown in Figure 2, to form an interior wall panel installation structure as shown in Figure 3. Note that Figure 3 is a reversed version of Figure 2.

[0039] Here, the interior wall panel installation structure is designed to allow the interior wall panel 18 to be installed later on the interior side 17 of the exterior wall 14 of a building unit 1 in which the exterior wall 14 has already been attached to the side wall surface 9.

[0040] In the explanation above, the interior wall panel 18 installed between the corner stud 16 and the stud 15 near the column 2 on the side wall surface 9 of the outdoor side 13 is in a state where the side edge on the corner stud 16 side is not attached to the corner stud 16.

[0041] In other words, the same wooden bricks 21 as those used for the studs 15 are not fixed to the interior side 17 of the corner stud 16, and the structure for attaching the corresponding side edge of the interior wall panel 18 via the wooden bricks 21 is not applied to the corner stud 16.

[0042] The interior wall panel installation structure in this embodiment mainly consists of a structure in which the corresponding side edges of the interior wall panels 18 are attached to the periphery of the corner studs 16.

[0043] (1B) Specifically, the interior wall panel installation structure is such that an installation member 33 having a panel mounting portion 32 extending in an inward-outward direction 31 perpendicular to the exterior wall 14 is attached to the column 2 that constitutes the building unit 1, with the panel mounting portion 32 protruding from the column 2. The interior wall panel 18 is a completed unit formed by attaching the facing material 18b to the panel frame 18a in advance, and is fixed to the panel mounting portion 32 by fasteners 34 with the vertical frame 18c located at the side edge in contact with the panel mounting portion 32.

[0044] Column 2 is a pair of columns 2 located on both sides of the side wall surface 9 on which the exterior wall 14 is installed, and is one of the four vertical members that form the unit frame of the building unit 1. Column 2, made of rectangular steel pipes, has four faces in the circumferential direction. Therefore, the face facing the interior side 17 is designated as the first side 2a, the face facing the exterior side 13 as the second side 2b, the face facing inward towards the side wall surface 9 on which the exterior wall 14 is installed as the third side 2c, and the face facing outward towards the side wall surface 9 on which the exterior wall 14 is installed as the fourth side 2d.

[0045] The interior-exterior direction 31 is a horizontal direction connecting the interior side 17 and the exterior side 13, with the front side being the interior side 17 and the back side being the exterior side 13. The interior-exterior direction 31 is perpendicular to the side wall surface 9 of the building unit 1 and the exterior wall 14 that is pre-attached to the side wall surface 9. Furthermore, when the interior wall panel 18 is attached to the side wall surface 9, the interior-exterior direction 31 is perpendicular to the interior wall panel 18 and coincides with the thickness direction (=interior-exterior direction 31) of the interior wall panel 18.

[0046] The panel mounting portion 32 is the part of the mounting member 33 to which the interior wall panel 18 is attached. The panel mounting portion 32 is mainly formed on the portion of the mounting member 33 that protrudes inward from the column 2 17.

[0047] The panel mounting portion 32 has a surface on the side opposite to the column 2 (the interior side 17 and the inside of the side wall surface 9) that contacts the interior wall panel 18. The outer surface of the vertical frame 18c of the interior wall panel 18 contacts this contact surface. The vertical frame 18c may be in direct contact with the panel mounting portion 32, or, if necessary, may be indirectly contacted via a vertical support member (not shown). The vertical support member is integrally fixed to the vertical frame 18c. It is preferable that the vertical support member extends in the vertical direction 6 with approximately the same length as the vertical frame 18c. The following explanation will mainly describe an example in which the vertical frame 18c is in direct contact with the panel mounting portion 32.

[0048] The panel mounting portion 32 has dimensions in the inward-outward direction 31 (width of the panel mounting portion 32) that allow the inner wall panel 18 to be fixed in a stable position when it is in contact with the inner wall panel 18. For example, it is preferable that the panel mounting portion 32 has a width that is approximately the same as, slightly wider than, or slightly narrower than, the dimensions in the inward-outward direction 31 (thickness of the vertical frame 18c) of the vertical frame 18c of the inner wall panel 18. In Figure 5, the panel mounting portion 32 is about half the thickness of the vertical frame 18c, but the panel mounting portion 32 should be at least half the thickness of the vertical frame 18c.

[0049] Furthermore, when the interior wall panel 18 is attached to the mounting member 33, it is preferable that the panel mounting portion 32 is not visible from the interior side 17. To this end, for example, it is preferable that the interior wall panel 18 be mounted such that the tip of the panel mounting portion 32, which protrudes from the column 2, is recessed to the extent that it reaches or does not reach the back surface of the facing material 18b. This ensures that the tip of the panel mounting portion 32 does not extend beyond the interior side 17 of the panel frame 18a (or the back surface of the facing material 18b).

[0050] The mounting member 33 is a member used to attach the interior wall panel 18 to the column 2. The mounting member 33 only needs to have at least a panel mounting portion 32 that extends in the thickness direction of the interior wall panel 18 and a column mounting portion 35 for attaching the mounting member 33 to the column 2. The mounting member 33 is installed on the column 2 by attaching the column mounting portion 35 to the column 2 in advance, before attaching the interior wall panel 18. The mounting member 33 has no attachment relationship with the corner column 16 and is installed in a non-contact state with the corner column 16.

[0051] Located on the side edge means that the vertical frame 18c is located at both ends of the width of the interior wall panel 18. The vertical frame 18c of the interior wall panel 18 is the one that is close to the corner stud 16 and the stud 2, which are the left and right vertical frames 18c that form the panel frame 18a of the interior wall panel 18.

[0052] The interior wall panel 18 is an interior panel installed on the interior side 17 of the exterior wall 14. It is preferable to use as many high-precision finished products (or finished panels) that are automatically manufactured by machine as possible in the building. In this embodiment, finished panels are used for the interior wall panels 18 adjacent to the corner studs 16 and the columns 2. With respect to the interior-outside direction 31, the back surface (the surface facing the outside 13) of the interior wall panel 18 is installed so that it is at the same position as the first side surface 2a of the column 2, or further inward 17 (towards the front). To this end, the mounting member 33 must be attached to the column 2 with at least a portion of it protruding further inward 17 than the first side surface 2a of the column 2, and the protruding portion becomes the panel mounting portion 32. The side edge (vertical frame 18c) of the interior wall panel 18 is then fixed to the panel mounting portion 32 of the mounting member 33 with a fastener 34.

[0053] The fastener 34 is a component for fixing the interior wall panel 18 to the panel mounting section 32. The fastener 34 can be made of nails or screws. Nails are driven-in fasteners, and screws are fastening fasteners. The panel mounting section 32 may have mounting holes 32a (Figure 8B, etc.) through which the fastener 34 passes.

[0054] The interior wall panel 18 is fixed to the panel mounting portion 32 of the mounting member 33 with fasteners 34, with the vertical frame 18c in direct or indirect contact with the panel mounting portion 32. For example, the interior wall panel 18 is fixed to the panel mounting portion 32 of the mounting member 33 by screwing in fasteners 34 such as screws or driving in fasteners 34 such as nails, thereby causing the fasteners 34 to bite into the vertical frame 18c of the interior wall panel 18 by the required amount. When the interior wall panel 18 is attached indirectly, a vertical batten member is interposed between the panel mounting portion 32 and the vertical frame 18c, and both the vertical batten member and the vertical frame 18c are attached to the panel mounting portion 32 by fasteners 34.

[0055] The fastener 34 is attached to the panel mounting portion 32 and the vertical frame 18c from the side opposite to the vertical frame 18c (outside the side wall surface 9) along the surface of the inner wall panel 18, almost horizontally. The fastener 34 may be attached to the panel mounting portion 32 almost perpendicularly or at an angle.

[0056] In this case, as shown in Figure 3, the basic mounting position of the mounting member 33 to the column 2 is to install the panel mounting portion 32 such that the amount of protrusion from the first side surface 2a of the column 2 toward the front is approximately equal to the thickness of the panel frame 18a of the inner wall panel 18 (basic position).

[0057] In contrast, as shown in Figures 4 and 5, for example, the mounting member 33 can adjust the amount of protrusion of the panel mounting portion 32 by shifting its mounting position on the column 2 in the inward / outward direction 31 relative to its basic position, in order to align the surface (indoor side 17) of the mounting member 33 with the adjacent interior wall panel 18A.

[0058] For example, in Figure 4, the mounting position of the mounting member 33 is shifted forward (indoor side 17) from the basic position so that the amount of protrusion of the panel mounting portion 32 is greater than the thickness of the panel frame 18a. In Figure 5, the mounting position of the mounting member 33 is shifted backward (outdoor side 13) from the basic position so that the amount of protrusion of the panel mounting portion 32 is less than the thickness of the panel frame 18a. This mounting position of the mounting member 33 on the column 2 becomes the initial position of the mounting member 33 before the installation of the interior wall panel 18.

[0059] Then, by adjusting the initial mounting position of the mounting member 33 relative to the basic position, the amount of protrusion of the panel mounting portion 32 is changed. By setting and adjusting the amount of protrusion of this panel mounting portion 32, the mounting position of the inner wall panel 18 in the thickness direction (inner-outer direction 31) is set (rough adjustment).

[0060] Furthermore, after the mounting member 33 is attached to the column 2, the position of the inner wall panel 18 relative to the panel mounting section 32 can be adjusted (fine-tuned) by shifting the mounting position of the inner wall panel 18 relative to the panel mounting section 32 in the inward / outward direction 31. The setting of the mounting position of the mounting member 33 relative to the column 2 and the adjustment of the mounting position of the inner wall panel 18 relative to the panel mounting section 32 can be used in combination. This improves the degree of freedom in adjusting the position of the inner wall panel 18 in the thickness direction.

[0061] For example, in Figure 4, the panel mounting portion 32 has an increased protrusion by shifting its initial position towards the interior side 17 (front side) compared to its basic position, while the interior wall panel 18 is mounted in the same way as in Figure 3, so that the back surface of the facing material 18b is at approximately the same position as the tip of the panel mounting portion 32. In Figure 5, the panel mounting portion 32 has an increased protrusion by shifting its initial position towards the exterior side 13 (back side) compared to its basic position, while the interior wall panel 18 is mounted in the same way as in Figure 3, so that the tip of the panel mounting portion 32 is located approximately in the center of the thickness of the panel frame 18a.

[0062] Furthermore, if the structure is such that the interior wall panel 18 is attached to the panel mounting portion 32 of the mounting member 33 installed on the column 2, then, as shown in Figure 6, it becomes possible to attach another interior wall panel 18B in a completed state to the side edge (on the column 2 side) of the attached interior wall panel 18, intersecting almost perpendicularly with the interior wall panel 18. However, the other interior wall panel 18B may also be installed by first attaching only the panel frame 18a (an incomplete unit without the facing material 18b), and then attaching the facing material 18b to the panel frame 18a later.

[0063] In this case, for example, by attaching the auxiliary wooden batten 36 to the panel mounting section 32 with fixing members 37 such as screws, it becomes possible to attach another interior wall panel 18B or the like to the auxiliary wooden batten 36. The auxiliary wooden batten 36 serves as a vertical panel mounting member. It is preferable that the auxiliary wooden batten 36 be a long member that extends vertically 6 and is approximately the same length as the column 2.

[0064] The auxiliary wooden batten 36 is installed on the opposite side of the panel mounting section 32 from the interior wall panel 18, and is attached to the panel mounting section 32 from the opposite side by a fixing member 37, so as to be almost horizontal and almost perpendicular to the surface. The auxiliary wooden batten 36 is preferably made of a square timber with one side having a substantially square cross-section that is substantially equal to the thickness of the vertical frame 18c of the interior wall panel 18 and another interior wall panel 18B.

[0065] The auxiliary wooden batten 36 is fixed with a gap between it and the panel mounting portion 32 such that it is separated from the side edge of the interior wall panel 18 by the thickness of the facing material 18b of the other interior wall panel 18B. In this case, it is preferable to use an interior wall panel 18B that is narrower in width (dimension in the inward / outward direction 31) than the interior wall panel 18 by the thickness of the auxiliary wooden batten 36 or the panel frame 18a of the interior wall panel 18.

[0066] Furthermore, even when the inner wall panel 18 is indirectly attached to the panel mounting section 32 via the vertical bracing member described above, another inner wall panel 18B that intersects perpendicularly can be attached to the vertical bracing member in the same manner as described above. The vertical bracing member becomes a vertical panel mounting material. In this case, since the vertical bracing member is located between the panel mounting section 32 and the side edge of the inner wall panel 18, the other inner wall panel 18B is installed in a position further to the right than in Figure 6.

[0067] Furthermore, if the back side of another interior wall panel 18B is open, it can be attached to vertical panel mounting materials such as auxiliary wooden battens 36 or vertical battens by working from the back side. To attach another interior wall panel 18B to the auxiliary wooden battens 36 or vertical battens, the vertical frame 18c of the other interior wall panel 18B and the auxiliary wooden battens 36 or vertical battens are connected and fixed together using fasteners such as screws or nails (not shown) in an approximately inward-outward direction 31.

[0068] However, if the back side of another interior wall panel 18B is covered with another facing material (i.e., gypsum board is attached to both sides), or if another exterior wall is attached to the back side of another interior wall panel 18B, it is difficult to install another interior wall panel 18B that has been manufactured automatically as a finished product by machine beforehand. In such cases, it is also possible to first attach only the panel frame 18a to the auxiliary wooden battens 36 or vertical battens at the factory or construction site, and then attach the facing material 18b to the panel frame 18a (by hand) afterwards, thereby completing another interior wall panel 18B inside the building unit 1.

[0069] (2) In the above, in the interior wall panel installation structure, as shown in Figure 2, the mounting members 33 may be installed on the column 2 in the vertical direction 6, either individually or in groups with intervals between them.

[0070] Here, the mounting members 33 only need to be provided in the minimum number necessary to obtain the strength required for attaching the side edge of the interior wall panel 18. For example, in Figure 2, the mounting members 33 are installed at two locations in the vertical direction 6 of the column 2. The two mounting members 33 are located at the top and middle of the column 2. This allows the mounting members 33 to be installed at a high position that makes the installation of the interior wall panel 18 relatively easy. The two mounting members 33 could also be located on the upper and lower sides of the column 2.

[0071] Furthermore, for example, if one mounting member 33 is to be installed, it is preferable to attach the mounting member 33 to the middle part of the column 2 (closer to the center). For example, if three mounting members 33 are to be installed, it is preferable to attach the mounting members 33 to the middle part, the upper part, and the lower part of the column 2.

[0072] The specific mounting height of the mounting member 33 is determined by comprehensively considering factors such as workability, how well the mounting member 33 fits in (avoiding interference with other members, its relationship to the structure of other parts, etc.), and the mounting strength of the side edge of the inner wall panel 18.

[0073] (3) In the above, in the interior wall panel installation structure, as shown in Figure 7, the insulation material 41 may be installed continuously on the corner studs 16 that are installed adjacent to the column 2.

[0074] Any type of insulation material 41 may be used, but it is preferable to use an organic material such as polystyrene or polyurethane. Organic materials are used as foams with a foaming agent to create insulating air bubbles inside, such as expanded polystyrene or expanded polyurethane. It is preferable that the air bubbles are independent of each other. Insulation material 41 made of organic material (organic insulation material) has high thermal insulation properties, is lightweight and soft, has a stable and consistent shape, and is a component that is easy to handle and use. The insulation material 41 (organic insulation material) is installed so as to close the open part of the corner stud 16, with a portion entering the internal space of the corner stud 16, and the remaining portion extending from the open part of the corner stud 16 to the outside of the corner stud 16, and almost in contact with the back surface of the interior wall panel 18. It is preferable that the insulation material 41 (organic insulation material) has a holding part or locking part (integrated or separate) to stably hold it so as not to move or come off the corner stud 16. Note that the insulation material 41 may be made of an inorganic material such as glass wool. The insulation material 41 is omitted in all figures except Figure 7.

[0075] Continuous installation means that the insulation material 41 is installed in a continuous manner in the vertical direction 6 over almost the entire length of the corner stud 16. The insulation material 41 may be a single piece, or it may be made up of multiple divided pieces for easier handling, as long as continuity is maintained. Continuity means that the insulation material 41 is installed continuously without interruption, without any material that would impair the insulation (for example, wooden bricks 21) in between.

[0076] Furthermore, in areas other than the corner studs 16, for example, a different insulation material 42 (Figures 8 and 9) is installed in the space between the exterior wall 14 and the interior wall panel 18. Note that the other insulation material 42 is omitted in figures other than Figures 8 and 9.

[0077] (4) In the above, in the interior wall panel installation structure, the mounting member 33 may be a flat plate 51, as shown in Figure 3.

[0078] Here, the flat plate material 51 is, for example, a flat plate material with a small thickness relative to its width as a member, and a straight surface in the width direction (inner / outer direction 31). Preferably, the surface of the flat plate material 51 in the width direction is a flat surface (planar) without irregularities, steps, or curves. For the flat plate material 51, a small piece of wood that is roughly rectangular in side view, such as a piece of plywood, can be used. For example, a rectangular piece of plywood with a thickness of 5 to 10 mm, preferably 7 to 8 mm, and more preferably about 7.5 mm can be used.

[0079] The flat plate material 51 becomes a mounting member 33 without a clear boundary between the panel mounting portion 32 and the column mounting portion 35. Therefore, at least the portion of the flat plate material 51 that contacts the interior wall panel 18 becomes the panel mounting portion 32, and the portion that contacts the column 2 becomes the column mounting portion 35.

[0080] The flat plate material 51 is installed with its width direction as a member oriented in the thickness direction (inner-outer direction 31) of the inner wall panel 18, so that the column mounting portion 35 directly or indirectly abuts against the third side surface 2c of the column 2. The column mounting portion 35 is attached to the third side surface 2c of the column 2 with fixing members 52 such as concrete nails or screws so as to be substantially perpendicular to the first side surface 2a. The fixing members 52 are screwed into the third side surface 2c of the column 2 from the side where the inner wall panel 18 is installed (inside the side wall surface 9), substantially perpendicular to the column mounting portion 35. A mounting hole 35a (for example, Figure 8B) may be formed in the column mounting portion 35. The column mounting portion 35 only needs to have a width sufficient to form a mounting hole 35a through which the fixing member 52 passes.

[0081] Furthermore, structurally, the mounting member 33 can be made of a relatively thick piece of lumber or the like, instead of the relatively thin flat plate material 51.

[0082] (5) In the above, in the interior wall panel installation structure, the mounting member 33 may be replaced with mounting brackets 61 and 62, as shown in Figures 8A and 9A.

[0083] Here, the mounting brackets 61 and 62 are metal fittings made of metal plates, and can be, for example, the Z-shaped bracket (mounting bracket 61) in Figure 8B or the L-shaped bracket (mounting bracket 62) in Figure 9B (Figure 9C).

[0084] The Z-shaped bracket (Figure 8B) is a mounting bracket 61 in which the panel mounting portion 32 and the column mounting portion 35 are parallel to each other and formed in a stepped manner via a stepped portion 61a. The column mounting portion 35 of the mounting bracket 61 is attached to the third side surface 2c of the column 2. The Z-shaped bracket can be used in almost the same way as the flat plate material 51. The stepped portion 61a may be set to the difference in plate thickness between the mounting bracket 61 and the flat plate material 51, for example, in order to make it compatible with the flat plate material 51. The mounting bracket 61 may also be a flat bracket without a step or an I-shaped bracket, similar to the flat plate material 51.

[0085] The L-shaped bracket (Figures 9B and 9C) is a mounting bracket 62 that is bent via a bent portion 62a such that the panel mounting portion 32 and the column mounting portion 35 are mutually perpendicular surfaces. The column mounting portion 35 of the mounting bracket 62 is attached to the first side surface 2a of the column 2. The mounting bracket 62 can be set and adjusted relative to the surface direction of the inner wall panel 18 by adjusting the lateral mounting position along the first side surface 2a of the column mounting portion 35.

[0086] The mounting bracket 61 may be welded to the third side surface 2c of the column 2, and the mounting bracket 62 may be welded to the first side surface 2a of the column 2, for example, by spot welding. In this case, the column mounting portion 35 only needs to have a width sufficient to allow welding.

[0087] The mounting bracket 61 may be fixed to the third side surface 2c of the column 2, and the mounting bracket 62 may be fixed to the first side surface 2a of the column 2, for example, by a fixing member 52 similar to that of the flat plate 51. In this case, a mounting hole 35a is formed in the column mounting portion 35. The column mounting portion 35 only needs to have a width sufficient to form a mounting hole 35a through which the fixing member 52 passes.

[0088] (6) As shown in Figures 8B, 9B, and 9C, in the interior wall panel installation structure, at least one of the mounting holes 32a through which the fastener 34 fastened to the interior wall panel 18 passes, and the mounting holes 35a through which the fixing member 52 fastened to the column 2 passes, may be elongated holes 63.

[0089] Here, the mounting holes 32a are holes for fasteners 34, which are provided one or more times in the panel mounting portion 32 of the mounting brackets 61 and 62. The mounting holes 35a are holes for fixing members 52, which are provided one or more times in the column mounting portion 35 of the mounting brackets 61 and 62. When multiple are provided, the multiple mounting holes 32a and mounting holes 35a are formed with a spacing in the vertical direction 6. In this embodiment, two mounting holes 32a and two mounting holes 35a are formed.

[0090] Mounting hole 32a may be an elongated hole 63. Similarly, mounting hole 35a may also be an elongated hole 63. An elongated hole 63 is an oval-shaped through hole. In this embodiment, both mounting holes 32a and 35a are elongated holes 63.

[0091] The elongated hole 63 of mounting hole 32a and the elongated hole 63 of mounting hole 35a may extend in the same direction. This allows for adjustment of the mounting position and release of external forces in relation to the extension direction of the elongated hole 63, and also allows for a larger adjustment range for the mounting position and a greater release of external forces. The same direction can be, for example, the horizontal direction (inward / outward direction 31 or a direction perpendicular to the inward / outward direction 31), or the vertical direction 6.

[0092] Furthermore, the elongated hole 63 of the mounting hole 32a and the elongated hole 63 of the mounting hole 35a may extend in different directions. These different directions can be, for example, the horizontal direction (inward / outward direction 31 or a direction perpendicular to the inward / outward direction 31) and the vertical direction 6. This makes it possible to adjust the position in both the horizontal and vertical directions 6, and to release external forces.

[0093] In this embodiment, the elongated hole 63 of mounting hole 32a and the elongated hole 63 of mounting hole 35a extend in different directions. The elongated hole 63 of mounting hole 32a extends in the vertical direction 6, and the elongated hole 63 of mounting hole 35a extends in the horizontal direction. Conversely, the elongated hole 63 of mounting hole 32a may extend in the horizontal direction, and the elongated hole 63 of mounting hole 35a may extend in the vertical direction 6. In terms of space, it is preferable to extend the elongated hole 63 of the side with the smaller width dimension of the panel mounting portion 32 and the column mounting portion 35 in the vertical direction 6.

[0094] When the elongated holes 63 of mounting hole 32a and the elongated holes 63 of mounting hole 35a are provided in different directions, it is preferable to position the other approximately midway along the length of one. In this embodiment, mounting hole 35a is formed so as to be located approximately midway along the length of mounting hole 32a, which extends in the vertical direction 6.

[0095] Furthermore, the length of the elongated holes 63 may be the same for mounting holes 32a and 35a, or they may be different. In this embodiment, the lengths of the elongated holes 63 are different for mounting holes 32a and 35a. When mounting holes 32a or 35a are composed of multiple elongated holes 63, it is preferable that the multiple mounting holes 32a or mounting holes 35a be approximately the same length. In addition, the multiple mounting holes 32a or mounting holes 35a are formed so that they are not connected to each other by adjusting the length of the elongated holes 63 or shifting their positions.

[0096] <Effect> The effect of this embodiment will be described below.

[0097] The method of installing the interior wall panel 18 described above involves installing the interior wall panel 18 from the interior side 17 of the building unit 1 onto the side wall surface 9 to which the exterior wall 14 is (first) attached. In this case, a mounting member 33 having a panel mounting portion 32 that extends in an inward-outward direction 31 perpendicular to the outer wall 14 is attached to the column 2 that constitutes the building unit 1, such that the panel mounting portion 32 protrudes further inward 17 than the column 2. Then, with the vertical frame 18c (of the inner wall panel 18) in contact with the panel mounting portion 32, the inner wall panel 18 is fixed to the panel mounting portion 32 by the fastener 34.

[0098] More specifically, the interior wall panel 18 is attached to the side wall surface 9 of the building unit 1 in the following manner.

[0099] First, exterior wall panels are attached to the outdoor side 13 of the studs 15 and corner studs 16 to form an exterior wall 14 that is approximately the size of one side of the side wall surface 9 of the building unit 1. This large exterior wall 14, along with the studs 15 and corner studs 16, is then attached to the side wall surface 9 on the outdoor side 13 of the unit frame. Alternatively, the exterior wall 14 may be formed by sequentially attaching the exterior wall panels to the studs 15 and corner studs 16 that have been pre-attached to the side wall surface 9 of the building unit 1.

[0100] Next, the mounting member 33 is attached to the column 2 that constitutes the side wall surface 9 on the outdoor side 13 of the unit frame. The mounting member 33 is installed so that the panel mounting portion 32 protrudes further inward 17 than the column 2. The mounting member 33 may also be installed on the column 2 before the outer wall 14 is attached to the side wall surface 9.

[0101] Next, insulation materials 41 and 42 are attached to the back side (indoor side 17) of the exterior wall 14. Insulation material 41 is attached to the corner studs 16 adjacent to the studs 15 and studs 2. The other insulation material 42 is installed so as to be interposed between the exterior wall 14 and the interior wall panel 18.

[0102] For the corner studs 16, the insulation material 41 is installed as a continuous piece that extends almost the entire length of the corner studs 16. The continuous insulation material 41 has a nearly uniform cross-sectional shape that can be inserted into the inside of the corner studs 16, and is a long member that extends almost the same as the corner studs 16, to the height of the building unit 1, i.e., the length of one floor of the building (approximately 2.5m to 4m).

[0103] If the insulation material 41 becomes too long and difficult to handle when left in a continuous length, the height of the corner stud 16 may be divided into approximately equal sections (2 or 3 sections) and installed in a continuous manner. This makes the insulation material 41 easier to handle and install while maintaining the effect of reducing the number of installation steps required for the insulation material 41. The insulation material 41 may also be divided into uneven lengths as appropriate.

[0104] The insulation material 41 attached to the corner studs 16 may be an organic material with shape retention properties, such as polyurethane foam or polystyrene foam, or an inorganic material with no shape retention properties, such as glass wool. In this embodiment, the insulation material 41 is an organic material with shape retention properties, taking into consideration ease of handling and workability.

[0105] Next, the interior wall panel 18 is installed on the back surface of the exterior wall 14 from the interior side 17, and the vertical frame 18c (on the side closest to the column 2) of the interior wall panel 18 (closest to the column 2) is brought into contact with the panel mounting portion 32 of the mounting member 33 that protrudes from the column 2. In this state, the interior wall panel 18 is attached to the mounting member 33 by screwing fasteners 34, such as screws, horizontally into the panel mounting portion 32 of the mounting member 33 that protrudes from the column 2, from the side opposite to the vertical frame 18c of the interior wall panel 18.

[0106] The direction in which the fastener 34 is screwed into the panel mounting portion 32 and the vertical frame 18c of the interior wall panel 18 (fastening direction) is a direction that intersects with the panel mounting portion 32 which extends in the inward-outward direction 31. Alternatively, the direction in which the fastener 34 is screwed into the panel mounting portion 32 and the vertical frame 18c (fastening direction) is a nearly horizontal direction along the surface direction of the interior wall panel 18. This installation work can be performed on the interior side 17 while visually checking the panel mounting portion 32 protruding from the column 2 and the interior wall panel 18 from the side, thus improving work efficiency.

[0107] In this case, the interior wall panel 18 can be attached to a relatively free position in the thickness direction (inward / outward direction 31) of the panel mounting portion 32 of the mounting member 33 fixed to the column 2, by displacing it in the thickness direction along the panel mounting portion 32 that protrudes from the column 2. Therefore, the interior wall panel 18 can be attached to the side wall surface 9 of the building unit 1 with high precision by measuring and adjusting the correct mounting position. In addition, the surface position can be easily aligned with other adjacent interior wall panels 18A by on-site adjustment.

[0108] The mounting member 33 may be, for example, a flat plate 51, or mounting brackets 61, 62.

[0109] For example, if mounting brackets 61 and 62 are used, at least one of the mounting holes 32a and 35a may be an elongated hole 63. Then, when installing the interior wall panel 18, the mounting brackets 61 and 62 can be slid along the elongated hole 63 relative to the column 2, and the interior wall panel 18 can be slid along the mounting brackets 61 and 62 relative to the elongated hole 63, thereby making it easy to adjust the mounting position of the interior wall panel 18.

[0110] Furthermore, the position of the inner wall panel 18 in the thickness direction can be roughly adjusted by setting and adjusting the mounting position of the mounting member 33 to the column 2 in the inward / outward direction 31, as shown in Figures 3 to 5.

[0111] For example, Figure 3 shows the mounting member 33 installed in the basic position such that the protrusion of the panel mounting portion 32 is approximately the same as the thickness of the panel frame 18a of the inner wall panel 18. Figure 4 shows the mounting member 33 installed so that the protrusion of the panel mounting portion 32 is greater than the thickness of the panel frame 18a of the inner wall panel 18. Figure 5 shows the mounting member 33 installed so that the protrusion of the panel mounting portion 32 is less than the thickness of the panel frame 18a of the inner wall panel 18. These allow for rough adjustment of the mounting position of the mounting member 33 relative to the column 2.

[0112] Furthermore, the position of the inner wall panel 18 in the thickness direction can be precisely adjusted by setting and adjusting the mounting position of the inner wall panel 18 relative to the panel mounting portion 32 of the mounting member 33.

[0113] Furthermore, by combining the above, after roughly adjusting the mounting position of the mounting member 33 to the column 2 in the panel mounting section 32, fine adjustments may be made by setting and adjusting the mounting position of the inner wall panel 18 to the panel mounting section 32.

[0114] For example, Figure 3 shows the back surface of the interior wall panel 18 attached to the panel mounting portion 32 of the mounting member 33, which is installed in the basic position, at the same position as the first side surface 2a of the column 2. This is the most basic mounting configuration. Figure 4 shows the back surface of the interior wall panel 18 attached to the panel mounting portion 32 of the mounting member 33, which is installed closer to the front than the basic position, relatively far in front of the first side surface 2a of the column 2 (on the interior side 17). Figure 5 shows the back surface of the interior wall panel 18 attached to the panel mounting portion 32 of the mounting member 33, which is installed further back than the basic position, slightly in front of the first side surface 2a of the column 2, so that it is at a position midway between the inward and outward directions 31 of Figures 3 and 4. Figure 5 is an unconventional mounting method compared to Figures 3 and 4.

[0115] The method of adjusting the position of the interior wall panel 18 using these mounting members 33 is effective, for example, when making fine adjustments after the interior wall panel 18 has been installed. Furthermore, because the interior wall panel 18 is attached to the column 2 via the mounting members 33, it is possible and easy to reattach the interior wall panel 18 later for precision adjustments.

[0116] As a result, the side edge of the interior wall panel 18 closest to the column 2, as seen from the interior side 17, is accurately and securely attached to the side wall surface 9 to which the exterior wall 14 of the building unit 1 is attached.

[0117] Furthermore, in corners of the interior wall (inner corners), for example, an auxiliary wooden batten 36 can be attached to the panel mounting portion 32 of the mounting member 33, and another interior wall panel 18B perpendicular to the interior wall panel 18 can be attached to the auxiliary wooden batten 36 (Figure 6). The other interior wall panel 18B can also be attached to a vertical batten member interposed between the panel mounting portion 32 and the vertical frame 18c of the interior wall panel 18, instead of the auxiliary wooden batten 36. The auxiliary wooden batten 36 and vertical batten members described above are installed as needed depending on the building's condition.

[0118] As described above, the interior wall panel 18 is installed so that its position in the thickness direction can be adjusted by working from the interior side 17, and so that it can be easily adjusted later, relative to the side wall surface 9 to which the exterior wall 14 of the building unit 1 is first attached. In this way, the problem of position adjustment is resolved, making it possible to construct an interior wall using a completed interior wall panel 18, which is integrated by attaching the facing material 18b to the interior side 17 of the panel frame 18a in advance.

[0119] Furthermore, when excessive external force is applied to the building unit 1, for example, due to an earthquake, the mounting position of the interior wall panel 18 to the column 2 is displaced along the elongated hole 63 of the mounting member 33, thereby allowing the external force to be released. This prevents damage to the interior wall panel 18.

[0120] <Effects>According to this embodiment, the following effects can be obtained.

[0121] (Effect 1) The interior wall panel installation structure involves installing the interior wall panel 18 from the interior side 17 of the building unit 1 onto the side wall surface 9 on the exterior side 13, where the exterior wall 14 of the building unit 1 is already attached. In this way, the manufacturing of the interior wall panel 18 can be automated, so the interior wall panel 18, which has been automatically manufactured by machine in advance, can be attached directly to the side wall surface 9 of the building unit 1. This eliminates the need to manually attach the panel frame 18a and the facing material 18b separately to the side wall surface 9 at the factory or construction site, thereby reducing the man-hours and personnel required to construct the interior wall on the side wall surface 9. Furthermore, mechanization can improve the precision of the interior wall panel 18 components.

[0122] However, if the exterior wall 14 is already attached to the building unit 1, the installation of the interior wall panel 18 is limited to the interior side 17. Furthermore, the presence of the exterior wall 14 prevents work from being done from the back side of the interior wall panel 18 (the side facing the exterior wall 14). As a result, there are constraints on the installation of the interior wall panel 18, and these constraints lead to problems such as difficulty in adjusting the position of the interior wall panel 18 in the thickness direction. Such problems hinder the realization of constructing interior walls using interior wall panels 18 that have been formed as a complete unit in advance. Therefore, the installation structure of the interior wall panel 18 needs to be devised.

[0123] Therefore, in the interior wall panel installation structure of this embodiment, an attachment member 33 having a panel attachment portion 32 extending in the thickness direction of the interior wall panel 18 is attached to the column 2 constituting the building unit 1 such that the panel attachment portion 32 protrudes from the column 2. The interior wall panel 18 is then fixed to the panel attachment portion 32 by a fastener 34 with the vertical frame 18c located at the side edge in contact with the panel attachment portion 32.

[0124] In this way, by fixing the inner wall panel 18 to the mounting member 33 installed on the column 2, the number of components requiring precision control is reduced to only the column 2 and the mounting member 33. This makes it possible to improve the mounting precision of the inner wall panel 18 to the side wall surface 9 to which the outer wall 14 has been previously attached.

[0125] In contrast, in the comparative example shown in Figures 10 and 11, for example, wooden bricks 21 (brick-shaped wooden pieces) similar to those used for the studs 15 are attached to the corner studs 16 installed on the side of the column 2 of the building unit 1. The corresponding side edges of the interior wall panels 18 are then attached to the corner studs 16 via the wooden bricks 21. With this structure, the number of components requiring precision control increases compared to the embodiment, as it includes the joint piece 5 of the building unit 1, the corner studs 16, and the wooden bricks 21. Consequently, the accuracy of the attachment of the interior wall panels 18 to the side wall surface 9 is lower in the comparative example compared to the embodiment.

[0126] Furthermore, in this embodiment, the inner wall panel 18 is fixed to the mounting member 33 attached to the column 2, so the corner column 16 does not require the wooden brick 21 as in the comparative example.

[0127] Furthermore, by fixing the interior wall panel 18 to the column 2 via the mounting member 33, the load-bearing capacity of the interior wall panel 18 is increased compared to the comparative example in which the interior wall panel 18 is fixed to the wooden brick 21 attached to the corner column 16, thus reducing the number of mounting members 33 used.

[0128] In addition, even with the exterior wall 14 present, the panel mounting portion 32 protruding from the column 2 of the mounting member 33 can be seen from the side. Therefore, the fastener 34 can be screwed into the panel mounting portion 32 (from the opposite side of the interior wall panel 18) while being seen from the interior side 17. Thus, the workability is good.

[0129] Furthermore, by positioning the vertical frame 18c of the interior wall panel 18 in contact with the panel mounting portion 32 that extends in the thickness direction of the interior wall panel 18, the mounting position of the interior wall panel 18 in the thickness direction can be freely adjusted. This makes it easy to adjust for any height differences between adjacent interior wall panels 18A. In other words, even when mounting from the interior side 17, the position of the interior wall panel 18 in the thickness direction can be easily adjusted. Therefore, defects in the wallpaper finish, such as "wrinkling of the wallpaper" due to height differences between the interior wall panel 18 and adjacent interior wall panels 18A, are less likely to occur. For this reason, the mounting member 33 is more suitable for fixing the interior wall panel 18 from the interior side 17 than the case of the wooden brick 21.

[0130] For example, in the comparative example using wooden bricks 21, the mounting position of the interior wall panel 18 in the thickness direction is adjusted by interposing a position adjustment spacer S between the front surface of the wooden bricks 21 and the back surface of the interior wall panel 18. In this case, it is not possible to adjust the position further back than the front surface of the wooden bricks 21, and only the position towards the front is possible. Furthermore, installing the spacer S requires removing the interior wall panel 18 once it has been set, and since the interior wall panel 18 is a relatively large component, removing it is a considerable effort. Moreover, since the spacer S is made by stacking the required number of pieces of a component with a predetermined thickness and interposing them between the back surface of the interior wall panel 18 and the front surface of the wooden bricks 21, fine adjustments that are not possible with the thickness of the spacer S are not possible.

[0131] In contrast, in this embodiment, the vertical frame 18c of the interior wall panel 18 is brought into contact with the panel mounting portion 32 extending in the thickness direction of the interior wall panel 18 from the side, so both forward and backward position adjustments are possible. Furthermore, the position of the interior wall panel 18 can be easily changed by simply shifting its position slightly forward or backward while the vertical frame 18c remains in contact with the panel mounting portion 32. Therefore, there is no need to remove the large interior wall panel 18 once it has been set. Also, since no spacer S is used for position adjustment, fine position adjustments unrelated to the thickness of the spacer S can be accommodated. Thus, even when installed from the indoor side 17, a degree of freedom in position adjustment is obtained, and position adjustment can be performed with high precision.

[0132] As a result, problems such as difficulty in adjusting the position of the interior wall panel 18 in the thickness direction are eliminated, and installation of the interior wall panel 18 from the interior side 17 becomes easy, making it practical to install the interior wall panel 18 on the side wall surface 9 of the building unit 1 to which the exterior wall 14 is attached. Note that the comparative example described above is a hypothetical example assumed to make the effects of the embodiment easier to understand.

[0133] (Effect 2) In the interior wall panel installation structure, the mounting members 33 may be installed on the column 2 in the vertical direction 6, either individually or in groups with intervals between them. This allows for miniaturization of the mounting members 33 and reduces the number of mounting members 33 installed on the column 2, enabling efficient installation of the interior wall panels 18 on the column 2.

[0134] (Effect 3) In the interior wall panel installation structure, continuous insulation material 41 may be installed on the corner studs 16 installed adjacent to the column 2. By attaching the mounting member 33 to the column 2 and installing the interior wall panel 18 on the mounting member 33, it becomes unnecessary to install wooden bricks 21 on the corner studs 16 for installing the interior wall panel 18, as in the comparative example. As a result, the corner studs 16 are no longer finely divided vertically 6 by the wooden bricks 21, so the insulation material 41 can be installed continuously over almost the entire area of ​​the corner studs 16. Since the continuous insulation material 41 can be attached to the corner studs 16 relatively easily, the effort required to attach the insulation material 41 is reduced, and the insulation performance of the corner studs 16 can be improved by the absence of wooden bricks 21 (or by the volume of wooden bricks 21).

[0135] For example, by using a single, continuous piece of insulation material 41, the installation of the insulation material 41 to the corner stud 16 can be completed in a single operation. Also, even when using divided pieces of insulation material 41 of an easily manageable length, there is no need to worry about the wooden bricks 21, making it relatively easy to install the insulation material 41 in a continuous manner. In contrast, as in the comparative example, the process of installing multiple short pieces of insulation material 41 to the corner stud 16, which is divided into many vertical sections by the wooden bricks 21, is time-consuming because one has to be mindful of the wooden bricks 21, and is therefore less efficient than the example.

[0136] (Effect 4) In the interior wall panel installation structure, the mounting member 33 may be made of a flat plate 51. Since the flat plate 51 is inexpensive and easy to handle, the mounting member 33 can be made more readily available and easier to work with. By using a flat plate 51 for the mounting member 33, leftover lumber can be effectively utilized. Also, since the flat plate 51 is relatively thin, the mounting member 33 can be installed without getting in the way, allowing for effective use of the space around the column 2.

[0137] (Effect 5) In the interior wall panel installation structure, the mounting member 33 may be replaced with mounting brackets 61 and 62. As the mounting brackets 61 and 62 have high strength, the mounting member 33 can attach the interior wall panel 18 to the column 2 more firmly and securely. Since the mounting brackets 61 and 62 are thinner (than the flat plate material 51), the mounting member 33 can be installed so as not to get in the way, allowing for effective use of the space around the column 2.

[0138] (Effect 6) In the interior wall panel installation structure, at least one of the mounting holes 32a through which the fastener 34 fastened to the interior wall panel 18 passes, and the mounting holes 35a through which the fixing member 52 fastened to the column 2 passes, may be elongated holes 63.

[0139] In this way, by making at least one of the mounting holes 32a and 35a of the mounting brackets 61 and 62 into an elongated hole 63, the elongated hole 63 of the mounting brackets 61 and 62 becomes a displacement allowance. Therefore, the elongated hole 63 acts as a relief (load absorption part) for external forces, making it difficult to transmit the deformation of the building unit 1 to the interior wall panel 18 during an earthquake, and effectively preventing damage to the interior wall panel 18 due to the earthquake.

[0140] Furthermore, by making at least one of the mounting holes 32a and 35a an elongated hole 63, the elongated hole 63 of the mounting brackets 61 and 62 becomes a position adjustment allowance. Therefore, when installing the interior wall panel 18, or after installation, the position of the interior wall panel 18 relative to the column 2 and mounting brackets 61 and 62 can be easily adjusted by, for example, loosening the fasteners 34 and fixing members 52 and sliding the mounting brackets 61 and 62 and the interior wall panel 18 along the elongated hole 63. [Explanation of Symbols]

[0141] 1 Building Unit 2 pillars 9 Side wall 14 Exterior Walls 17 Interior side 18 Interior wall panels 18a Panel frame 18b Surface material 18c vertical frame 31 Inward and outward directions 32 Panel mounting section 32a Mounting hole 33 Mounting components 34 Fixtures 35 Column mounting section 35a Mounting hole 41 Insulation 51 Flat material 52 Fixing member 61 Mounting bracket 62 Mounting brackets 63 long hole

Claims

1. An interior wall panel installation structure in which an interior wall panel is installed from the interior side of the building unit on the side wall surface to which the exterior wall of the building unit is attached, A mounting member having a panel mounting portion extending in an inward-outward direction perpendicular to the outer wall is directly attached to the column constituting the building unit, with the panel mounting portion protruding further inward than the column. The interior wall panel installation structure is characterized in that the interior wall panel is a completed unit formed by attaching a facing material to a panel frame in advance, and the vertical frame located at the side edge is in contact with the panel mounting portion, and the interior wall panel is fixed to the panel mounting portion in the planar direction by fasteners.

2. An interior wall panel installation structure for installing an interior wall panel from the interior side of a building unit on a side wall surface to which the exterior wall of the building unit is attached, A mounting member having a panel mounting portion that extends in an inward-outward direction perpendicular to the outer wall is attached to the column constituting the building unit such that the panel mounting portion protrudes further inward than the column. The aforementioned interior wall panel is a complete unit formed by attaching the facing material to the panel frame in advance, and the vertical frame located at the side edge is in contact with the panel mounting portion and is fixed to the panel mounting portion by fasteners. An interior wall panel installation structure characterized in that insulation material is installed continuously on corner studs installed adjacent to the aforementioned columns.

3. An interior wall panel installation structure for installing an interior wall panel from the interior side of a building unit on a side wall surface to which the exterior wall of the building unit is attached, A mounting member having a panel mounting portion that extends in an inward-outward direction perpendicular to the outer wall is attached to the column constituting the building unit such that the panel mounting portion protrudes further inward than the column. The aforementioned interior wall panel is a complete unit formed by attaching the facing material to the panel frame in advance, and the vertical frame located at the side edge is in contact with the panel mounting portion and is fixed to the panel mounting portion by fasteners. The mounting member is a flat plate material, which is the characteristic feature of the interior wall panel installation structure.

4. An interior wall panel installation structure for installing an interior wall panel from the interior side of a building unit on a side wall surface to which the exterior wall of the building unit is attached, A mounting member having a panel mounting portion that extends in an inward-outward direction perpendicular to the outer wall is attached to the column constituting the building unit such that the panel mounting portion protrudes further inward than the column. The aforementioned interior wall panel is a complete unit formed by attaching the facing material to the panel frame in advance, and the vertical frame located at the side edge is in contact with the panel mounting portion and is fixed to the panel mounting portion by fasteners. The aforementioned mounting member is a mounting bracket, characterized in that it is an interior wall panel installation structure.

5. An interior wall panel installation structure according to claim 4, The mounting bracket is characterized in that at least one of the mounting holes for passing the fastener to be fastened to the inner wall panel and the mounting hole for passing the fixing member to be fastened to the column is an elongated hole.

6. An interior wall panel installation structure according to any one of claims 1 to 5, The interior wall panel installation structure is characterized in that the mounting members are installed on the column in a single or multiple manner with intervals between them in the vertical direction.

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