Inner-wall backing structure

A U-shaped cover base material with fixing fittings addresses the challenge of attaching base materials to vertical members at building corners by creating gaps and using inclined and vertical fixing plates for stable fixation, adaptable to varying conditions.

WO2026100118A1PCT designated stage Publication Date: 2026-05-15SEKISUI HOUSE KK
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
SEKISUI HOUSE KK
Filing Date
2025-05-28
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Existing inner wall base structures fail to effectively attach a base material to vertical members at the corners of buildings, particularly structural columns, due to their location and inability to use screws or other fastening methods.

Method used

A U-shaped cover base material is provided around vertical members, secured by fixing fittings with vertical and inclined fixing plates that sandwich the base material, creating gaps to prevent insertion members from reaching the vertical members and allowing stable fixation despite varying ceiling heights and wall thicknesses.

Benefits of technology

The solution enables secure attachment of base materials around vertical members, preventing insertion members from contacting the members and ensuring stable fixation, adaptable to different ceiling heights and wall thicknesses without requiring customized materials.

✦ Generated by Eureka AI based on patent content.

Smart Images

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    Figure JP2025019279_15052026_PF_FP_ABST
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Abstract

[Problem] To provide an inner-wall backing structure in which a backing material is provided to the periphery of a vertical material even when said backing material cannot be attached to the vertical material itself used in an inner wall. [Solution] The present invention is characterized by having: a long vertical material 10 that is used in an inner wall of a building; a vertical support material 20 that extends in parallel adjacent to the vertical material 10; a cover backing material 30 that is fixed to the vertical support material 20, is disposed around the vertical material 10, and serves as an inner-wall backing which has a U-shaped cross-section; and a securing metal fitting 60 that secures an end 31 of the cover backing material 30 and a ceiling part 40 or floor part 50 of the building to one another.
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Description

Inner wall base structure

[0001] The present invention relates to an inner wall base structure in which a base material is provided on a vertical member on an inner wall.

[0002] In Patent Document 1, a fixing fitting for connecting a body edge and a metal base material and an inner wall base structure using the fixing fitting are described.

[0003] JP-A-2002-013211

[0004] However, in the inner wall base structure described in Patent Document 1, for the vertical members of the columns at the corners of the inner walls of the building, since they are at the corners, it was not possible to attach the base material.

[0005] Therefore, the present invention has been made in view of the above circumstances, and even when it is not possible to attach a base material to the vertical member itself used in the inner wall, it is to provide an inner wall base structure in which a base material is provided around the vertical member.

[0006] The inner wall base structure according to the present invention includes a long vertical member used for the inner wall of a building, a vertical support member extending in parallel adjacent to the vertical member, a cover base material fixed to the vertical support member and disposed around the vertical member, which serves as an inner wall base having a U-shaped cross section in a cross-sectional view, and a fixing fitting for fixing the cover base material to the ceiling portion or the floor portion of the building.

[0007] It is characterized in that there is a gap between the vertical member and the cover base material.

[0008] The fixing fitting includes a vertical fixing plate fixed to the cover base material, a horizontal fixing plate fixed to the ceiling portion or the floor portion, and an inclined fixing plate located between the vertical fixing plate and the horizontal fixing plate in a side view and inclined, and the cover base material is characterized in that an end portion thereof is sandwiched and fixed between the vertical fixing plate and the inclined fixing plate. [[ID=二十五]] [[ID=二十六]]

[0009] [[ID=二十七]] The vertical fixing plate is characterized in that holes that are the same as or larger than the inclined fixing plate are provided so as to coincide with the vertical fixing plate.

[0010] According to the present invention, since a cover base material that serves as an interior wall base in a U-shape in cross-section is arranged around a long length used in the interior wall of a building, the base material can be provided around the vertical members.

[0011] Furthermore, since there is a gap between the vertical members and the cover base material, the insertion member that penetrates the cover base material can be prevented from reaching the vertical members.

[0012] Furthermore, since the cover base material is secured by being sandwiched between the vertical fixing plate and the inclined fixing plate at its ends, the cover base material can be secured from both directions across its surface.

[0013] Furthermore, since the vertical fixing plate has holes that are the same size as or larger than those of the inclined fixing plate, it is possible to prevent the vertical fixing plate from tipping backward when an insertion member is inserted, as the force will escape through the holes.

[0014] This is a schematic perspective view showing the interior wall substrate structure according to the present invention. This is a schematic perspective view of the upper fixing bracket or the lower fixing bracket. This is a (a) plan view, (b) front view, and (c) right side view of the upper fixing bracket or the lower fixing bracket. This diagram shows the construction method of the interior wall substrate structure, illustrating how vertical support members are attached to vertical members and how the upper and lower fixing brackets are attached. This diagram shows the construction method of the interior wall substrate structure, illustrating how the cover substrate material is attached. This diagram shows the construction method of the interior wall substrate structure, illustrating how the cover substrate material is fixed. (a) This is a cross-sectional view showing an embodiment in which the interior wall substrate structure according to the present invention is used at a corner. (b) This is a cross-sectional view showing an embodiment in which the interior wall substrate structure according to the present invention is used at an end. This diagram shows the fixing points between the fixing bracket and the cover substrate material at different ceiling heights.

[0015] The interior wall substrate structure 100 according to the present invention will be described in detail below with reference to the drawings.

[0016] (Regarding the interior wall base structure 100) Figure 1 shows a schematic perspective view of the interior wall base structure 100 according to the present invention. The interior wall base structure 100 is mainly used at the corners and ends of interior walls in buildings. The interior wall base structure 100 mainly comprises vertical members 10 that extend vertically in the interior wall of a building, vertical support members 20 that extend parallel to and adjacent to the vertical members 10, cover base material 30 fixed to the vertical support members 20 and arranged around the vertical members 10, forming a U-shaped interior wall base in cross-section, and fixing fittings 60 that fix the end 31 of the cover base material 30 to the ceiling 40 or floor 50.

[0017] The floor section 50 is part of the interior space of the building and consists of flooring materials such as floor finishing materials, floor underlayment materials, and flooring, which constitute the lower floor surface of the interior. The ceiling section 40 is also part of the interior space of the building and consists of ceiling materials such as ceiling finishing materials and ceiling underlayment materials, which constitute the upper ceiling surface of the interior that separates the room from the underfloor space or attic of the upper floor.

[0018] (Regarding the fixing bracket 60) As shown in Figures 2 and 3, the fixing bracket 60 is a bracket that is roughly L-shaped in side view and fixes the cover base material 30 to the ceiling 40 or floor 50 of the building. As shown in Figure 1, the fixing bracket 60 fixes the middle surface of the U-shaped cover base material 30 in cross-section to the ceiling 40 or floor 50. That is, it is positioned opposite the vertical support member 20.

[0019] The fixing bracket 60 mainly consists of two parts: an upper fixing bracket 70 on the ceiling 40 side and a lower fixing bracket 80 on the floor 50 side. The upper fixing bracket 70 fixes the upper end 31a of the middle surface of the cover base material 30 to the ceiling 40. The lower fixing bracket 80 fixes the lower end 31b of the middle surface of the cover base material 30 to the floor 50.

[0020] In this embodiment, the fixing bracket 60 is fixed to the middle surface of the cover base material 30, but if necessary, it may be fixed to both sides of the cover base material 30, or it may be fixed to three surfaces: both sides and the middle surface.

[0021] The upper fixing bracket 70 mainly comprises a vertical fixing plate 62a for fixing the cover base material 30, a horizontal fixing plate 61a fixed to the ceiling portion 40, an inclined fixing plate 63a located between the vertical fixing plate 62a and the horizontal fixing plate 61a in a side view, and a hole 64.

[0022] Similarly, the lower fixing bracket 80 mainly comprises a vertical fixing plate 62b for fixing the cover base material 30, a horizontal fixing plate 61b fixed to the floor portion 50, an inclined fixing plate 63b located between the vertical fixing plate 62b and the horizontal fixing plate 61b in a side view, and a hole 64.

[0023] (Regarding the horizontal fixing plate 61) The horizontal fixing plates 61a and 61b are plates that are fixed to the ceiling portion 40 or the floor portion 50. They are fixed to the ceiling portion 40 or the floor portion 50 at least two locations by insertion members S. The horizontal fixing plates 61a and 61b may be provided with insertion holes for insertion.

[0024] As shown in Figure 2, the corners of the horizontal fixing plates 61a and 61b are chamfered. Chamfering helps prevent injuries to the installer.

[0025] (Regarding the vertical fixing plates 62) As shown in Figure 1, the vertical fixing plates 62a and 62b are located on the inner surface side of the cover base material 30. Therefore, even when the insertion member S is driven in from the inclined fixing plate 63, the vertical fixing plates 62a and 62b support the cover base material 30 with their surface so that the force does not escape to the back side. Because it is supported by a surface rather than a point, the cover base material 30 can be supported stably.

[0026] In this embodiment, the vertical fixing plate 62 is formed to be approximately perpendicular to the horizontal fixing plate 61. However, if the vertical member 10 is fixed to the ceiling portion 40 or floor portion 50 at an angle rather than at a right angle, the upper fixing bracket 70 and the lower fixing bracket 80 may also be formed to be at the same angle.

[0027] Furthermore, the width of the vertical fixing plate 62 is always formed to be shorter than the middle surface of the cover base material 30. Therefore, the same type of fixing bracket 60 can be used even if the wall thickness changes, without having to prepare fixing brackets 60 according to the wall thickness.

[0028] As shown in Figure 2, the corners of the vertical fixing plate 62 are chamfered. Chamfering helps prevent injuries to the installer.

[0029] (Regarding the inclined fixing plate 63) The inclined fixing plate 63 is an inclined plate located between the vertical fixing plate 62 and the horizontal fixing plate 61 in a side view. As shown in Figure 3(c), the inclined fixing plate 63 normally rises from the intersection of the vertical fixing plate 62 and the horizontal fixing plate 61 in a side view and is inclined toward the vertical fixing plate 62. The inclination angle of the inclined fixing plate 63 can be freely changed when attaching the cover base material 30 or when fixing the inclined fixing plate 63 with the insertion member S.

[0030] Furthermore, as shown in Figure 1, the inclined fixing plate 63 and the vertical fixing plate 62 sandwich the middle surface of the cover base material 30, so that the inclined fixing plate 63 is fixed to the outer surface of the cover base material 30 and the vertical fixing plate 62 is fixed to the inner surface of the cover base material 30.

[0031] Then, by inserting a screw or other insertion member S through the inclined fixing plate 63, the fixing bracket 60 can be fixed to the cover base material 30.

[0032] The inclined fixing plate 63 is provided with holes 64 that are the same size as or larger than the inclined fixing plate 63. In this embodiment, the inclined fixing plate 63 is formed by cutting the vertical fixing plate 62 into a rectangular shape and then tilting it, so the holes 64 and the inclined fixing plate 63 coincide.

[0033] When inserting a screw or other insertion member S from above the inclined fixing plate 63, since it has a hole 64, the insertion member S passes through the hole 64 of the vertical fixing plate 62, preventing force from being transmitted to the vertical fixing plate 62 in the direction of the vertical support member 20, and instead exiting through the hole 64. This prevents the vertical fixing plate 62 from falling inwards, and allows the cover base material 30 to be fixed stably.

[0034] As shown in Figure 1, the corners of the inclined fixing plate 63 are chamfered. Chamfering helps prevent injuries to the installer.

[0035] (Regarding the vertical members 10) The vertical members 10 are long members that extend in a straight line in the interior wall of the building and are not suitable for use as base materials. In this embodiment, the vertical members 10 are structural columns that extend in a straight line vertically in the interior wall and support the vertical load of the building, and are made of steel that cannot be fastened with through members such as screws.

[0036] Furthermore, as shown in Figures 1 and 4, the upper and lower ends of the vertical members 10 are cylindrical round steel bars, while the other intermediate parts are rectangular prism-shaped square steel bars. The vertical members 10 used in the interior walls of a building may be pipes, piping, etc., and are not limited to structural columns. Also, even if they do not extend in the vertical direction, the vertical members 10 may extend diagonally using bracing, as in a load-bearing wall.

[0037] (Regarding the cover base material 30) As shown in Figure 1, the cover base material 30 is a long base material formed of thin sheet metal in a U-shape in cross-section, and is arranged around the vertical members 10. By providing the cover base material 30, interior wall material I such as gypsum board can be attached around the vertical members 10, which cannot be used as a base material.

[0038] Since the cover base material 30 has a U-shaped cross-section rather than a rectangular one, it can be attached later and the vertical members 10 can be passed through it, even if the vertical members 10 have already been installed.

[0039] As shown in Figures 1 and 7, a gap B is formed between the vertical member 10 and the cover base material 30. Because a gap B is formed, even if a screw or other insertion member S is driven into the cover base material 30, the tip of the insertion member S will not reach the vertical member 10.

[0040] As shown in Figure 8, the upper end 31a of the cover base material 30 is sandwiched and fixed by the vertical fixing plate 62a and the inclined fixing plate 63a of the upper fixing bracket 70. Note that in Figure 8, only the middle surface of the cover base material 30 is shown for illustrative purposes.

[0041] Similarly, the lower end 31b of the cover base material 30 is sandwiched and fixed by the vertical fixing plate 62b and the inclined fixing plate 63b of the lower fixing bracket 80.

[0042] The height position where the cover base material 30 is fixed to the inclined fixing plate 63 and the vertical fixing plate 62 by the insertion member S is somewhere within the height position that can penetrate both the inclined fixing plate 63 and the vertical fixing plate 62, but it is not specifically specified and is determined by the ceiling heights H1 and H2 from the floor portion 50 to the ceiling portion 40.

[0043] That is, as shown in FIG. 8, when the ceiling height is as low as H1, the lower end 31b of the cover base material 30 falls due to gravity and is fixed near the intersection point of the vertical fixing plate 62b and the inclined fixing plate 63b of the lower fixing fitting 80. Similarly, the upper end 31a of the cover base material 30 is also fixed near the intersection point of the vertical fixing plate 62a and the inclined fixing plate 63a of the upper fixing fitting 70.

[0044] On the other hand, when the ceiling height H2 is high and the ceiling height H1 is longer than the length L of the cover base material 30, the lower end 31b of the cover base material 30 is fixed near the intersection point of the vertical fixing plate 62b and the inclined fixing plate 63b of the lower fixing fitting 80 due to gravity. On the other hand, the upper end 31a of the cover base material 30 will be fixed near the tip 62a1 of the inclined fixing plate 63a and the vertical fixing plate 62a.

[0045] Thus, even when the ceiling heights H1 and H2 are different, in addition to the length L of the cover base material 30, it can adapt even if the ceiling heights are different by the lengths of the vertical fixing plate 62a and the inclined fixing plate 63a. Therefore, it is not necessary to prepare cover base materials 30 with different lengths L one by one as the ceiling height changes, and the same cover base material 30 can be diverted.

[0046] Also, in the case of the ceiling height H2, the lower end 31b of the cover base material 30 is fixed near the intersection point of the vertical fixing plate 62b and the inclined fixing plate 63b of the lower fixing fitting 80, but if necessary, similar to when using the upper fixing fitting 70, the lower end 31b of the cover base material 30 may be fixed near the tips of the vertical fixing plate 62b and the inclined fixing plate 63b.

[0047] (Regarding the vertical support member 20) The vertical support member 20 is attached adjacent to and parallel to the vertical member 10. The vertical support member 20 is formed of, for example, wood or the like and is fixed to the vertical member 10 using an adhesive or the like. Also, as shown in FIG. 1, the cover base material 30 is fixed at regular pitches from both sides by insertion members S such as screws.

[0048] The length of the vertical support member 20 is formed to be the same as that of the cover base material 30, and the lateral width of the vertical support member 20 is formed to be the same as the lateral width of the cover base material 30.

[0049] Since the vertical support member 20 is sandwiched and fixed to both side surfaces of the cover base material 30, by using the vertical support member 20, it is possible to prevent the both side surfaces of the cover base material 30 from spreading or narrowing.

[0050] (Regarding the construction procedure) The construction procedure of the inner wall base structure 100 will be described using FIGS. 4 to 6. First, as shown in FIG. 4, the vertical support member 20 is attached to the back side of the vertical member 10 of the inner wall. In the present embodiment, an adhesive is used as the attachment method, but the method is not particularly limited as long as it can be attached.

[0051] Then, positioning is performed for the locations where the upper fixing fitting 70 and the lower fixing fitting 80 are to be fixed to the ceiling portion 40 and the floor portion 50. When performing the positioning, the width of the gap B, the length of the widths of both side surfaces of the cover base material 30, etc. are taken into consideration. After the positioning, the upper fixing fitting 70 and the lower fixing fitting 80 are fixed to the ceiling portion 40 and the floor portion 50 using the insertion member S.

[0052] Then, as shown in FIG. 5, the cover base material 30 is attached. When attaching, the inclined fixing plate 63a of the upper fixing fitting 70 is tilted to the side of the horizontal fixing plate 61a in advance. Then, after sandwiching the lower end 31b of the cover base material 30 between the inclined fixing plate 63a and the vertical fixing plate 62a of the lower fixing fitting 80, the upper end 31a of the cover base material 30 is placed against the vertical fixing plate 62a, and the tilted inclined fixing plate 63a is raised toward the cover base material 30 side. Thereby, the end portion 30 of the cover base material 30 can be sandwiched between the inclined fixing plates 63a, 63b and the vertical fixing plates 62a, 62b.

[0053] Subsequently, as shown in Figure 6, the cover base material 30 is fixed to the vertical support material 20 by driving the insertion members S into it from both sides at regular intervals. Then, the series of constructions for the interior wall base structure 100 is completed by driving the insertion members S into the cover base material 30 from the inclined fixing plate 63 and fixing it in place.

[0054] In addition, although the upper fixing bracket 70 was fixed to the ceiling portion 40 before the cover base material 30 was attached, it is also possible to sandwich the upper end 31a of the cover base material 30 between the inclined fixing plate 63a and the vertical fixing plate 62a of the upper fixing bracket 70 before fixing the upper fixing bracket 70 to the ceiling portion 40.

[0055] Subsequently, as shown in Figure 7, the interior wall material I, such as gypsum board, can be attached to the cover base material 30 from four directions using the insertion member S. Figure 7(a) is a cross-sectional view when the interior wall base structure 100 is used at the corner of the interior wall. Figure 7(b) is a cross-sectional view when the interior wall base structure 100 is used at the end of the interior wall. As shown in Figure 7, studs T are used in areas other than the ends and corners.

[0056] 100 Interior wall base structure 10 Vertical member 20 Vertical support member 30 Cover base material 31 End 31a Upper end 31b Lower end 40 Ceiling section 50 Floor section 60 Fixing bracket 61 Horizontal fixing plate 62 Vertical fixing plate 63 Inclined fixing plate 64 Hole 70 Upper fixing bracket 80 Lower fixing bracket S Insertion member T Stud L Length B Gap I Interior wall material

Claims

1. An interior wall substrate structure characterized by comprising: a long vertical member used in the interior wall of a building; a vertical support member extending parallel to and adjacent to the vertical member; a cover substrate material fixed to the vertical support member and arranged around the vertical member, forming an interior wall substrate with a U-shape in cross-section; and fixing fittings for fixing the cover substrate material to the ceiling or floor of the building.

2. The interior wall substrate structure according to claim 1, characterized in that there is a gap between the vertical member and the cover substrate material.

3. The interior wall base structure according to claim 1 or 2, wherein the fixing bracket comprises a vertical fixing plate fixed to the cover base material, a horizontal fixing plate fixed to the ceiling or floor, and an inclined fixing plate positioned between the vertical fixing plate and the horizontal fixing plate in a side view, and the end of the cover base material is sandwiched and fixed between the vertical fixing plate and the inclined fixing plate.

4. The interior wall base structure according to claim 3, characterized in that the vertical fixing plate is provided with holes the same size as or larger than those of the inclined fixing plate.