Building interior wall structure

The inner wall structure uses a wooden frame supported by ceiling and floor base materials to conceal supports, addressing the need for decorative materials and ensuring appearance quality and load support.

JP2026060506APending Publication Date: 2026-04-08TOYOTA HOUSING CORP
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-09-27
Publication Date
2026-04-08

AI Technical Summary

Technical Problem

Existing inner wall structures require decorative materials to conceal ceiling and floor rails, compromising appearance quality on the indoor side.

Method used

A building inner wall structure comprising a wooden interior wall frame with upper and lower horizontal bars and vertical bars, supported by base materials on the ceiling and floor, with optional reinforcing members, concealing these supports and maintaining appearance quality without additional decorative materials.

Benefits of technology

The inner wall can be arranged independently of the outer wall while maintaining indoor appearance quality without decorative materials, and supports loads in the building height direction through reinforcing members.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 2026060506000001_ABST
    Figure 2026060506000001_ABST
Patent Text Reader

Abstract

The objective is to obtain a building interior wall structure that allows the interior wall to be positioned independently of the exterior wall, while maintaining the quality of the interior appearance without using decorative materials. [Solution] In the interior wall 60 of the building 10, an upper base material 70 is placed on the lower surface of the ceiling 28 and along the upper horizontal 68 on the outdoor side of the upper horizontal 68 of the building, and the upper part of the interior wall frame 62 is supported by this upper base material 70. On the other hand, a lower base material 72 is placed on the upper surface of the floor 34 and along the lower horizontal 68 on the outdoor side of the lower horizontal 68 of the building, and the lower part of the interior wall frame 62 is supported by this lower base material 72.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to an inner wall structure of a building.

Background Art

[0002] Patent Document 1 below discloses an invention related to an attachment structure of an inner wall panel. In this attachment structure of the inner wall panel, an inner wall material is attached to an inner wall frame made of metal and having a rectangular frame shape to form the inner wall panel. Further, an upper attachment piece is provided on the upper horizontal frame of the inner wall frame, and the upper end portion of the inner wall panel is attached to the ceiling side by this upper attachment piece. On the other hand, a lower attachment piece is provided on the lower horizontal frame of the inner wall frame, and the lower end portion of the inner wall panel is attached to the floor side by this lower attachment piece. Therefore, the inner wall can be arranged independently of the outer wall.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] [[ID=३4]] However, in the above prior art, a ceiling rail that functions as a base material on the upper side of the building of the inner wall panel is arranged on the lower surface of the ceiling, and a floor rail that functions as a base material on the lower side of the building of the inner wall panel is arranged on the upper surface of the floor. Therefore, in order to maintain the appearance quality on the indoor side, it is necessary to separately arrange a decorative material around the ceiling rail and the floor rail.

[0005] In consideration of the above facts, an object of the present invention is to obtain an inner wall structure of a building that can arrange the inner wall independently of the outer wall and can maintain the appearance quality on the indoor side without using a decorative material.

Means for Solving the Problems

[0006] The interior wall structure of a building according to the first embodiment comprises an interior wall material constituting the wall surface of the interior wall of the building; an upper horizontal bar arranged along the upper peripheral edge of the interior wall material; a lower horizontal bar arranged along the lower peripheral edge of the interior wall material; and a pair of vertical bars arranged along the peripheral edge of the interior wall material extending in the building height direction, configured in a rectangular frame shape, and having a wooden interior wall frame arranged on the outdoor side of the interior wall material and to which the interior wall material is attached; an upper base material arranged along the lower surface of the ceiling and the upper horizontal bar on the outdoor side of the upper horizontal bar to support the upper part of the interior wall frame; and a lower base material arranged along the upper surface of the floor and the lower horizontal bar on the outdoor side of the lower horizontal bar to support the lower part of the interior wall frame.

[0007] In the interior wall structure of the building according to the first embodiment, the wall surface of the interior wall of the building is composed of interior wall material. Furthermore, the wooden interior wall frame is configured in a rectangular frame shape, including an upper horizontal bar arranged along the upper periphery of the interior wall material of the building, a lower horizontal bar arranged along the lower periphery of the interior wall material of the building, and a pair of vertical bars arranged along the periphery of the interior wall material that extends in the building height direction. The interior wall material is then attached to this interior wall frame.

[0008] In this embodiment, an upper base material is arranged on the outdoor side of the upper horizontal bar, along the underside of the ceiling and the upper horizontal bar, and this upper base material supports the upper part of the interior wall frame of the building.

[0009] On the other hand, on the outdoor side of the lower horizontal bar, a lower base material is placed along the upper surface of the floor and the lower horizontal bar, and this lower base material supports the lower part of the interior wall frame of the building. In other words, in this embodiment, the interior wall frame can be supported by the ceiling and floor of the building.

[0010] Furthermore, in this embodiment, when viewed from the interior side, the upper and lower underlayment materials are covered and concealed by the interior wall material attached to the interior wall frame. As a result, the upper and lower underlayment materials can be made invisible from the interior side without the need to place any additional decorative materials.

[0011] The interior wall structure of a building according to the second embodiment further comprises, in the interior wall structure of a building according to the first embodiment, a reinforcing member that is arranged along the vertical battens on the outdoor side of the vertical battens, interposed between the upper base material and the lower base material, and attached to the vertical battens.

[0012] In the interior wall structure of the building according to the second embodiment, reinforcing members are arranged along the vertical battens on the outdoor side of the interior wall frame, and these reinforcing members are attached to the vertical battens. Furthermore, these reinforcing members are interposed between the upper and lower base materials. Therefore, in this embodiment, the load acting on the interior wall frame in the building height direction can be supported by the reinforcing members.

[0013] The interior wall structure of a building according to the third embodiment further comprises, in the interior wall structure of a building according to the first embodiment, a reinforcing member which is arranged along the vertical battens on the outdoor side of the vertical battens and attached to the upper base material and the lower base material, thereby constituting a base frame that supports the interior wall frame together with the upper base material and the lower base material.

[0014] In the third embodiment of the building's interior wall structure, reinforcing members are arranged along the vertical battens on the exterior side of the interior wall frame, and these reinforcing members are attached to the upper and lower base materials, thereby forming a base frame together with the upper and lower base materials. The interior wall frame is then supported by this base frame. Therefore, in this embodiment, the load acting on the interior wall frame in the building height direction can be supported by the reinforcing members without changing the arrangement on the interior wall frame side. [Effects of the Invention]

[0015] As described above, in the inner wall structure of the building according to the invention of the present application, the inner wall can be arranged independently of the outer wall, and has an excellent effect that the appearance quality on the indoor side can be maintained without using decorative materials.

Brief Description of the Drawings

[0016] [Figure 1] It is a cross-sectional view schematically showing the inner wall structure of the building according to the first embodiment (a cross-sectional view showing the state cut along the line 1-1 of FIG. 4). [Figure 2] It is an exploded perspective view schematically showing the inner wall structure of the building according to the first embodiment. [Figure 3] It is a cross-sectional view schematically showing the configuration of the inner wall frame according to the first embodiment (a cross-sectional view showing the state cut along the line 3-3 of FIG. 4). [Figure 4] It is a perspective view schematically showing the building unit constituting the building according to the first embodiment. [Figure 5] It is an enlarged cross-sectional view schematically showing the inner wall structure of the building according to the second embodiment (a cross-sectional view corresponding to FIG. 1). [Figure 6] It is an exploded perspective view schematically showing the inner wall structure of the building according to the second embodiment. [Figure 7] It is a cross-sectional view schematically showing the configuration of the inner wall frame according to the second embodiment (a cross-sectional view corresponding to FIG. 3).

Modes for Carrying Out the Invention

[0017] <First Embodiment> Hereinafter, an example of a building 10 to which the inner wall structure of the building according to the embodiment of the present invention is applied will be described with reference to FIGS. 1 to 4.

[0018] First, the overall structure of the "building 10" according to the present embodiment will be described. As shown in FIG. 4, the building 10 according to the present embodiment is configured by installing a plurality of building units 12 on a foundation (not shown).

[0019] The building frame 14 that constitutes the building unit 12 includes columns (not shown) erected at the four corners, a ceiling frame 16 that connects the upper ends of the columns, and a floor frame 18 that connects the lower ends of the columns, as partially shown in FIG. 1. The ceiling frame 16 is composed of ceiling girders 20 made of channel steel and ceiling girders (not shown) shorter than the ceiling girders 20 arranged in a rectangular frame shape, and a plurality of ceiling joists (not shown) are spanned between the ceiling girders 20 at predetermined intervals.

[0020] Also, the floor frame 18 has the same structure as the ceiling frame 16. Specifically, the floor frame 18 is composed of floor girders 22 made of channel steel and floor girders (not shown) shorter than the floor girders 22 arranged in a rectangular frame shape, and a plurality of ceiling joists (not shown) are spanned between the floor girders 22 at predetermined intervals.

[0021] Then, a "ceiling 28" is constituted by including a ceiling base material 24 and a ceiling material 26 located below the building of the ceiling frame 16, and a "floor 34" is constituted by including a floor base material 30 and a floor material 32 located above the building of the floor frame 18.

[0022] Explaining the structure of the ceiling 28 in more detail, the ceiling base material 24 made of a plate material is arranged in a state of abutting against the lower surface of the lower flange portion 20B of the ceiling girder 20 with the web portion 20A facing the outdoor side. And on the lower surface 24A of the ceiling base material 24, rectangular flat ceiling materials 26 are laid in a predetermined number along the longitudinal direction (bay direction) of the building unit 12 with the outdoor side ends spaced a predetermined distance from the outdoor side peripheral portion of the lower surface 24A toward the inside of the building. Note that a ceiling cloth for ceiling finishing (not shown) is stretched on the finished surface of the ceiling material 26.

[0023] Meanwhile, in the floor 34, a floor subfloor 30 formed from rectangular cross-section timbers is positioned in contact with the upper surface of the upper flange portion 22B of the floor main beam 22, which is positioned with its web portion 22A facing the outside. On the upper surface 30A of the floor subfloor 30, a predetermined number of rectangular flat floor materials 32 are laid along the longitudinal direction of the building unit 12, with their outdoor ends spaced at a predetermined distance from the outdoor periphery of the upper surface 30A toward the inside of the building. A floor finishing material (not shown) is laid on the finished surface of the floor materials 32.

[0024] Furthermore, multiple exterior wall panels 36 are attached to the outdoor side of the ceiling beams 20 and floor beams 22, arranged in a row along the longitudinal direction of the building unit 12, and these exterior wall panels 36 constitute a part of the exterior wall 38 of the building 10.

[0025] This exterior wall panel 36 is composed of a rectangular frame-shaped exterior wall frame 40 and a rectangular flat exterior wall material 48, and is arranged with its width direction aligned with the longitudinal direction of the building unit 12.

[0026] The exterior wall frame 40 is composed of a pair of vertical battens 42 extending in the building height direction, a horizontal batten 44 spanning between the upper ends of the vertical battens 42, and a horizontal batten 46 spanning between the lower ends of the vertical battens 42. Specifically, the vertical battens 42 are made of channel steel, and their web portions 42A are positioned facing outward in the width direction of the exterior wall panel 36.

[0027] Furthermore, an insulating material (not shown) is attached to the indoor flange portion 42B of the vertical batten 42, and an exterior wall material 48 is attached to the outdoor flange portion 42C of the vertical batten 42.

[0028] On the other hand, the horizontal bar 44 is made of channel steel, and its web portion 44A is positioned facing the underside of the building. The exterior wall material 48 is attached to the flange portion 44B on the outdoor side of the horizontal bar 44.

[0029] Furthermore, weld nuts 56 are provided at multiple locations in the width direction of the exterior wall panel 36 on the outdoor side of the indoor flange portion 44C of the horizontal bar 44, and insertion holes (not shown) corresponding to the weld nuts 56 are formed in the web portion 20A of the ceiling beam 20. Then, the upper side of the building of the exterior wall frame 40 is fixed to the ceiling beam 20 by screwing bolts 52 into the weld nuts 56 from the indoor side of the web portion 20A of the ceiling beam 20.

[0030] The horizontal bar 46 is composed of a web portion 46A that extends in the width direction of the exterior wall panel 36 and a flange portion 46B that extends from the outdoor peripheral edge of the web portion 46A toward the lower side of the building, and the exterior wall material 48 is attached to the flange portion 46B.

[0031] Furthermore, a bracket 54 extending in the width direction of the exterior wall panel 36 is attached to the web portion 46A of the horizontal bar 46. This bracket 54 is composed of an upper wall portion 54A positioned along the lower surface of the web portion 46A and joined to the web portion 46A by a joint (not shown), such as welding, and a side wall portion 54B extending from the indoor peripheral edge of the upper wall portion 54A toward the lower side of the building.

[0032] Furthermore, a weld nut 56 is provided on the outdoor side of the side wall portion 54B, and an insertion hole (not shown) corresponding to the weld nut 56 is formed in the web portion 22A of the floor beam 22. Then, a bolt 58 is screwed into the weld nut 56 from the indoor side of the web portion 22A of the floor beam 22, thereby fixing the lower side of the building of the exterior wall frame 40 to the floor beam 22.

[0033] In this embodiment, the interior wall structure of the building according to this embodiment is applied to the "interior wall 60" of the building unit 12. The interior wall structure of the building 10, which is the main part of this embodiment, will be described in detail below.

[0034] As shown in Figures 2 and 4, the interior wall 60 is composed of multiple interior wall panels 61 connected together, and each interior wall panel 61 includes an "interior wall frame 62" that forms its framework and an "interior wall material 64" that forms the "wall surface 60A" on the indoor side of the interior wall 60.

[0035] As shown in Figure 1, the interior wall frame 62 is constructed in a rectangular frame shape with the building height as its longitudinal direction, including a pair of rectangular parallelepiped "vertical battens 66" made of wood and extending in the building height direction, and a pair of rectangular parallelepiped "horizontal battens 68" made of wood and extending in the longitudinal direction of the building unit 12. The horizontal battens 68 on the upper side of the building are positioned to fit between the upper ends 66A of the vertical battens 66, and both ends of the horizontal battens 68 are fixed to the upper ends 66A of the vertical battens 66 by mounting members such as nails (not shown).

[0036] On the other hand, the horizontal bars 68 on the lower side of the building are positioned to fit between the lower ends 66B of the vertical bars 66, and both ends are fixed to the lower ends 66B of the vertical bars 66 by mounting members such as nails (not shown). The interior wall frame 62 may be configured such that the horizontal bars 68 are positioned on the upper side of the building above the upper ends 66A of the vertical bars 66, or the horizontal bars 68 are positioned on the lower side of the building below the lower ends 66B of the vertical bars 66.

[0037] Furthermore, interior wall material 64, which is made of rectangular flat gypsum board, is attached to the interior wall frame 62 from the indoor side using mounting members such as nails (not shown). The upper horizontal rail 68 of the building is positioned along the upper periphery of the interior wall material 64 and functions as the upper horizontal rail. The lower horizontal rail 68 of the building is positioned along the lower periphery of the interior wall material 64 and functions as the lower horizontal rail. In addition, the vertical rail 66 is positioned along the periphery of the interior wall material 64 that extends in the building height direction. The interior wall material 64 is covered with interior wall finishing cloth (not shown).

[0038] Furthermore, between the interior wall panel 61 and the exterior wall panel 36, there is an insulating material (not shown) consisting of glass wool covered with a film material, as well as various wiring and other components.

[0039] As shown in Figure 1, the interior wall frame 62, configured as described above, has its upper horizontal battens 68 supported by a wooden "upper base material 70," and its lower horizontal battens 68 supported by a wooden "lower base material 72." The upper base material 70 is supported by a wooden ceiling base material 74, and the lower base material 72 is supported by a wooden floor base material 76.

[0040] More specifically, on the indoor side of the ceiling base material 24, a ceiling space base material 74 is arranged at a predetermined distance from the ceiling base material 24. This ceiling space base material 74 extends in the longitudinal direction of the building unit 12 and is formed of rectangular cross-section timbers. It is arranged along the upper surface of the ceiling material 26 and is attached to the ceiling material 26 by mounting members (not shown).

[0041] On the other hand, the upper base material 70 extends in the longitudinal direction of the building unit 12 and is formed of rectangular timbers with a rectangular cross-section. It is also positioned along the lower surface of the ceiling material 26, i.e., the lower surface of the ceiling 28, so as to overlap with the ceiling base material 74 when viewed from the building height direction.

[0042] Then, mounting members such as nails 78 are driven from the lower side of the building of the upper base material 70 toward the ceiling base material 74, thereby fixing the upper base material 70 to the ceiling 28. In addition, the upper base material 70 is positioned along the horizontal battens 68 on the outdoor side of the upper base material 68, and mounting members such as nails 80 are driven from the indoor side of the horizontal battens 68 toward the upper base material 70, thereby fixing the horizontal battens 68 to the upper base material 70.

[0043] On the other hand, on the indoor side of the floor underlayment 30, a floor underlayment 76 is arranged at a predetermined distance from the floor underlayment 30. This floor underlayment 76 extends in the longitudinal direction of the building unit 12 and is formed of rectangular cross-section timbers. It is arranged along the underside surface of the floor material 32 and is attached to the floor material 32 by mounting members (not shown).

[0044] On the other hand, the lower base material 72 extends in the longitudinal direction of the building unit 12 and is formed of rectangular timbers, and is positioned along the upper surface of the floor material 32, i.e., the upper surface of the floor 34, so as to overlap with the underfloor base material 76 when viewed from the building height direction.

[0045] Then, the lower subfloor material 72 is fixed to the floor 34 by driving mounting members such as nails 82 from the upper side of the building toward the underfloor subfloor material 76. In addition, the lower subfloor material 72 is positioned along the horizontal rail 68 on the outdoor side of the lower part of the building, and the horizontal rail 68 is fixed to the lower subfloor material 72 by driving mounting members such as nails 84 from the indoor side of the horizontal rail 68 toward the lower subfloor material 72.

[0046] Furthermore, a wooden "reinforcement member 86" is attached to each of the pair of vertical battens 66 of the interior wall frame 62. This reinforcement member 86 extends in the building height direction and is formed from a rectangular cross-section timber, and is positioned on the exterior side of the vertical battens 66 so as to overlap with the vertical battens 66 when viewed from the thickness direction of the interior wall material 64. The reinforcement member 86 is attached to the vertical battens 66 by mounting members such as nails (not shown). The reinforcement member 86 is positioned between the upper base material 70 and the lower base material 72 so as to overlap with the upper base material 70 and the lower base material 72 when viewed from the building height direction. In other words, the reinforcement member 86 is interposed between the upper base material 70 and the lower base material 72.

[0047] <Operation and Effects of This Embodiment> Next, the operation and effects of this embodiment will be described.

[0048] In this embodiment, as shown in Figure 1, the interior wall surface 60A of the building 10 is formed by the interior wall material 64. The wooden interior wall frame 62 is constructed in a rectangular frame shape, including horizontal bars 68 arranged along the upper periphery of the interior wall material 64, horizontal bars 68 arranged along the lower periphery of the interior wall material 64, and a pair of vertical bars 66 arranged along the periphery of the interior wall material 64 extending in the building height direction. The interior wall material 64 is attached to this interior wall frame 62.

[0049] In this embodiment, an upper base material 70 is positioned on the outdoor side of the upper horizontal beam 68 of the building, along the lower surface of the ceiling 28 and the horizontal beam 68, and the upper part of the interior wall frame 62 is supported by this upper base material 70.

[0050] On the other hand, a lower base material 72 is positioned on the outdoor side of the horizontal bar 68 at the bottom of the building, along the upper surface of the floor 34 and the horizontal bar 68, and the lower part of the interior wall frame 62 is supported by this lower base material 72. In other words, in this embodiment, the interior wall frame 62 can be supported by the ceiling 28 and floor 34 of the building 10.

[0051] Furthermore, in this embodiment, when viewed from the indoor side, the upper base material 70 and the lower base material 72 are covered and hidden by the interior wall material 64 attached to the interior wall frame 62. As a result, the upper base material 70 and the lower base material 72 can be made invisible from the indoor side without the need to place any additional decorative material.

[0052] Thus, in this embodiment, the interior wall 60 can be independently arranged from the exterior wall 38, and the appearance quality of the interior can be maintained without using decorative materials.

[0053] Furthermore, in this embodiment, a reinforcing member 86 is positioned along the vertical battens 66 on the outdoor side of the vertical battens 66 of the interior wall frame 62, and this reinforcing member 86 is attached to the vertical battens 66. This reinforcing member 86 is interposed between the upper base material 70 and the lower base material 72. Therefore, in this embodiment, the load acting on the interior wall frame 62 in the building height direction can be supported by the reinforcing member 86.

[0054] Furthermore, in this embodiment, the relative positional relationship between the outer wall frame 40 and the inner wall frame 62 can be arbitrarily set.

[0055] <Second Embodiment> The interior wall structure of a building according to the second embodiment of the present invention will be described below with reference to Figures 5 to 7. Note that components identical to those in the first embodiment described above will be given the same numbers and their descriptions will be omitted.

[0056] The "interior wall 90" to which the interior wall structure of the building according to this embodiment is applied has basically the same configuration as the interior wall 60 according to the first embodiment, but as shown in Figure 5, a reinforcing member 86 is attached to the upper base material 70 and the lower base material 72.

[0057] Specifically, in this embodiment, as shown in Figures 6 and 7, a rectangular frame-shaped "base frame 92" is constructed, comprising an upper base material 70, a lower base material 72, and a pair of reinforcing members 86 attached to them by mounting members such as nails (not shown). When viewed from the thickness direction of the interior wall material 64, the main part of this base frame 92 overlaps with the interior wall frame 62.

[0058] With this configuration, a reinforcing member 86 is positioned along the vertical battens 66 on the outdoor side of the vertical battens 66 of the interior wall frame 62. This reinforcing member 86 is attached to the upper base material 70 and the lower base material 72, thereby forming a base frame 92 together with the upper base material 70 and the lower base material 72. The interior wall frame 62 is then supported by this base frame 92. Therefore, in this embodiment, the load acting on the interior wall frame 62 in the building height direction can be supported by the reinforcing member 86 without changing the arrangement on the interior wall frame 62 side.

[0059] <Supplementary explanation of the above embodiment> (1) In the above-described embodiment, one interior wall material was placed for one interior wall frame, but the configuration is not limited to this, and other configurations such as placing one interior wall material for two interior wall frames are also possible. Furthermore, if the area of ​​the interior wall 60 is small, the interior wall 60 may be constructed with one interior wall frame and one interior wall material.

[0060] (2) Furthermore, although the inner wall frame in the above-described embodiment was composed of two vertical battens and two horizontal battens, it is not limited to this. If the area of ​​the inner wall 60 is large, it is possible to modify it to consist of three vertical battens and two horizontal battens. The same applies to the base frame 92. [Explanation of Symbols]

[0061] 10 Buildings 28 Ceiling 34 beds 60 Inner wall 60A Wall 62 Interior wall frame 64 Interior wall materials 66 vertical bars 68 Horizontal bars (upper horizontal bar, lower horizontal bar) 70 Upper base material 72 Lower base material 86 Reinforcement material 90 Inner wall 92 Base frame

Claims

1. The interior wall material that makes up the wall surface of the interior wall of the building, A wooden interior wall frame is formed in a rectangular frame shape, comprising an upper horizontal bar arranged along the upper periphery of the interior wall material of the building, a lower horizontal bar arranged along the lower periphery of the interior wall material of the building, and a pair of vertical bars arranged along the periphery of the interior wall material extending in the building height direction, and is positioned on the exterior side of the interior wall material and to which the interior wall material is attached, An upper base material is provided on the outdoor side of the upper horizontal bar, positioned along the lower surface of the ceiling and the upper horizontal bar, to support the upper part of the building of the interior wall frame, A lower base material is provided on the outdoor side of the lower horizontal bar, positioned along the upper surface of the floor and the lower horizontal bar, to support the lower part of the building of the interior wall frame, An interior wall structure of a building having the following characteristics.

2. The vertical battens are further provided with reinforcing members that are positioned along the vertical battens on the outdoor side of the vertical battens, interposed between the upper base material and the lower base material, and attached to the vertical battens. The interior wall structure of a building according to claim 1.

3. The system further comprises reinforcing members that are positioned along the vertical battens on the outdoor side of the vertical battens and attached to the upper and lower base materials, thereby constituting a base frame that supports the inner wall frame together with the upper and lower base materials. The interior wall structure of a building according to claim 1.

Citation Information

Patent Citations

  • Interior wall panel mounting structure, interior wall panel, and ceiling joist

    JP1999036492A