JP7472922B2 - Inside corner fittings, installation methods for interior inside corners, and buildings - Google Patents

Description

This disclosure relates to interior corner fittings, methods for installing interior corners, and buildings.

Corner fittings that secure wall materials to the interior walls of buildings (e.g., Patent Document 1) are known. The corner fittings are fixed to columns at the corners inside the building. Two wall materials that intersect at the corner are fixed to the columns via the corner fittings.

JP 2010-144470 A

However, there is room for improvement in terms of the support strength of interior wall materials with regard to inside corner fittings, construction methods for interior inside corners, and buildings.

(1) The inside corner fitting that solves the above problem is an inside corner fitting that fixes an interior wall material that constitutes an interior corner of an interior room to a pillar, and includes a first fixing part fixed to a first side surface of the pillar, a second fixing part fixed to a second side surface of the pillar that intersects with the first side surface, a first support part that supports the first interior wall material arranged to intersect with the first side surface, a second support part that supports the second interior wall material arranged to intersect with the second side surface, a first connecting part that is arranged diagonally to the first fixing part and the first support part in a plan view and connects the first fixing part and the first support part, and a second connecting part that is arranged diagonally to the second fixing part and the second support part in a plan view and connects the second fixing part and the second support part.

According to this configuration, the first support part is supported by the first connecting part. Therefore, the first support part is strong against forces acting perpendicularly to the first inner wall material. The second support part is supported by the second connecting part. Therefore, the second support part is strong against forces acting perpendicularly to the second inner wall material. In this way, the inner wall material can be firmly supported.

(2) The inside corner fitting described in (1) above includes a first member and a second member independent of the first member, the first member including the first fixing portion, the first connecting portion, the first support portion, and a third fixing portion extending from the first support portion and fixed to the second side surface of the column, and the second member including the second fixing portion, the second connecting portion, the second support portion, and a contact portion extending from the second support portion and contacting the first support portion. With this configuration, the structure of the first member and the structure of the second member can be simplified. This makes it easier to manufacture the inside corner fitting.

(3) In the inside corner fitting described in (2) above, the third fixing portion of the first member is connected to the first support portion via a step portion, and the step portion is configured to contact the first side surface of the pillar together with the first fixing portion. With this configuration, the third fixing portion can be easily positioned at a predetermined position by abutting the step portion of the first member against the corner of the pillar. In this way, the first member can be positioned relative to the pillar.

(4) In the inside corner fitting described in (2) or (3) above, the second fixing portion of the second member is configured so as not to overlap with the third fixing portion when the first member and the second member are attached to the pillar. With this configuration, the second fixing portion does not interfere with the third fixing portion, so the second fixing portion can be brought into direct contact with the pillar. Therefore, the second fixing portion can be easily fixed to the pillar with a screw.

(5) In the inside corner fitting described in any one of (2) to (4) above, the first member is made of a single sheet metal, and the second member is made of a single sheet metal. With this configuration, the manufacture of the first member and the second member can be simplified compared to when the first member and the second member are made of multiple members.

(6) In the inside corner fitting described in any one of (2) to (5) above, the angle between the first connecting portion and the first supporting portion of the first member is 20 degrees or more, and the angle between the second connecting portion and the second supporting portion of the second member is 20 degrees or more.

This configuration prevents the screw for fixing the first inner wall material to the first support section from coming into contact with the first connecting section. It prevents the screw for fixing the second inner wall material to the second support section from coming into contact with the second connecting section. This reduces the risk of the first connecting section and the second connecting section being deformed by the driving of the screw.

(7) In the inside corner fitting described in (6) above, the angle between the first connecting portion and the first supporting portion of the first member is 45 degrees or less, and the angle between the second connecting portion and the second supporting portion of the second member is 45 degrees or less.

This configuration makes it possible to prevent the arrangement space of the first insulating material arranged on the back side of the first inner wall material from becoming narrower. It makes it possible to prevent the arrangement space of the second insulating material arranged on the back side of the second inner wall material from becoming narrower.

(8) A building that solves the above problems, the building has an exterior wall, the exterior wall has a corner, the corner comprises a pillar, a first interior wall material and a second interior wall material that form an interior corner in an interior room, and an interior corner fitting that fixes the first interior wall material and the second interior wall material to the pillar, the interior corner fitting comprises a first fixing part fixed to a first side surface of the pillar, a second fixing part fixed to a second side surface of the pillar that intersects with the first side surface, a first support part that supports the first interior wall material arranged to intersect with the first side surface, a second support part that supports the second interior wall material arranged to intersect with the second side surface, a first connecting part that is arranged diagonally in a plan view with respect to the first fixing part and the first supporting part and connects the first fixing part and the first supporting part, and a second connecting part that is arranged diagonally in a plan view with respect to the second fixing part and the second supporting part and connects the second fixing part and the second supporting part.

According to this configuration, the first support part is supported by the first connecting part. Therefore, the first support part is strong against forces acting perpendicularly to the first inner wall material. The second support part is supported by the second connecting part. Therefore, the second support part is strong against forces acting perpendicularly to the second inner wall material. In this way, the inner wall material can be firmly supported.

(9) The building described in (8) above further includes a first exterior wall section arranged parallel to the first interior wall material, a second exterior wall section arranged parallel to the second interior wall material, a first insulating material arranged between the first interior wall material and the first exterior wall section, and a second insulating material arranged between the second interior wall material and the second exterior wall section, where an end of the first insulating material is arranged so as to contact the pillar and the first connecting section, and an end of the second insulating material is arranged so as to contact the pillar and the second connecting section. With this configuration, there are few gaps near the pillar. This can improve the insulation of the exterior wall near the interior corners of the room.

(10) A construction method for interior corners that solves the above problems includes a step of fixing an interior wall material to a pillar via an interior corner fitting, the interior corner fitting having a first fixing part fixed to a first side surface of the pillar, a second fixing part fixed to a second side surface of the pillar that intersects with the first side surface, a first support part that supports a first interior wall material arranged to intersect with the first side surface, a second support part that supports a second interior wall material arranged to intersect with the second side surface, a first connecting part that is arranged diagonally in a plan view relative to the first fixing part and the first support part and connects the first fixing part and the first support part, and a second connecting part that is arranged diagonally in a plan view relative to the second fixing part and the second support part and connects the second fixing part and the second support part. This configuration can improve the strength of the interior corner.

(11) In the method for constructing an interior corner described in (10) above, the interior corner fitting comprises a first member and a second member independent of the first member, the first member includes the first fixing portion, the first connecting portion, the first support portion, and a third fixing portion extending from the first support portion and fixed to the second side surface of the pillar, the second member includes the second fixing portion, the second connecting portion, the second support portion, and a contact portion extending from the second support portion and contacting the first support portion, and the method includes a first step of fixing the first member to the pillar, a second step of fixing the second member to the pillar, a third step of fixing the first interior wall material to the first member, and a fourth step of fixing the second interior wall material to the second member.

According to this configuration, the first member can be fixed to the pillar independently of the second member. The second member can be fixed to the pillar independently of the first member. This makes it easier to position the first support portion of the first member and the second support portion of the second member in precise positions relative to the pillar. This makes it easier to position the first inner wall material and the second inner wall material in predetermined positions.

(12) In the construction method for interior corners described in (11) above, in the first step, the first fixing portion of the first member is fixed to the first side surface of the pillar with a screw, and the third fixing portion of the first member is fixed to the second side surface of the pillar with a screw. With this configuration, the first member is fixed to the first side surface and the second side surface. Therefore, the first member can be firmly fixed to the pillar.

The interior corner fittings, interior corner construction method, and building disclosed herein can provide strong support for interior wall materials.

This is a cross-sectional view of an interior corner near an interior corner of a room. FIG. 4 is a cross-sectional view of a first member of the inside corner fitting. FIG. 4 is a cross-sectional view of a second member of the inside corner fitting. FIG. 2 is a cross-sectional view of an inside corner fitting in which a first member and a second member are combined together. 11 is a cross-sectional view of an interior corner portion of an indoor room after a first member has been attached. FIG. 11 is a cross-sectional view of an interior corner portion of an indoor room after a second member has been attached. FIG. This is a cross-sectional view of an interior corner portion after the first insulation material and the second insulation material have been installed in an interior corner of an room. 1 is a cross-sectional view of an interior corner portion of an indoor space after a first interior wall material and a second interior wall material have been installed. FIG. 11 is a cross-sectional view of a reference recessed corner portion. FIG.

<Inside corner fittings>
The inside corner fitting 30 will be described with reference to Figures 1 to 4. The structure of a corner 3 of an exterior wall 2 of a building 1 will be described with reference to Figure 1. The corner 3 of the exterior wall 2 constitutes an interior corner 4. The interior corner 4 is an interior corner in an indoor space.

The corner 3 of the exterior wall 2 comprises a pillar 10, a first interior wall material 21, a second interior wall material 22, and an exterior wall portion 24. The exterior wall portion 24 comprises a first exterior wall portion 25 and a second exterior wall portion 26. The first interior wall material 21 and the second interior wall material 22 are arranged so as to be perpendicular to each other, forming an interior corner 4 inside the room. The first exterior wall portion 25 and the second exterior wall portion 26 are arranged so as to be perpendicular to each other, forming an exterior corner 5 outside the room. The exterior corner 5 is an exterior corner in the outdoor space.

The first inner wall material 21 and the second inner wall material 22 are made of gypsum board, wood, or resin board. Wallpaper is applied to the first inner wall material 21 and the second inner wall material 22. Interior materials may be attached to the first inner wall material 21 and the second inner wall material 22.

The first exterior wall portion 25 and the second exterior wall portion 26 have a laminated structure. For example, the first exterior wall portion 25 and the second exterior wall portion 26 include a wooden or resin base material, a resin insulation layer, and a resin waterproof layer. The base material is directly fixed to the pillar 10. Siding material 28 is attached to the outside of the exterior wall portion 24. The siding material 28 is fixed to the exterior wall portion 24 via furring strips or specified metal fittings. Instead of the siding material 28, the exterior wall portion 24 may have a finishing layer. The finishing layer is formed, for example, of mortar.

A first insulating material 6 is disposed between the first inner wall material 21 and the first outer wall portion 25. A second insulating material 7 is disposed between the second inner wall material 22 and the second outer wall portion 26. The first insulating material 6 or the second insulating material 7 is composed of, for example, glass wool insulating material.

The pillar 10 is disposed between the inner wall portion 20, which is constituted by the first inner wall material 21 and the second inner wall material 22, and the outer wall portion 24, which is constituted by the first outer wall portion 25 and the second outer wall portion 26. The pillar 10 is provided between the inner intersection portion 23, which is the portion where the first inner wall material 21 and the second inner wall material 22 intersect, and the outer intersection portion 27, which is the portion where the first outer wall portion 25 and the second outer wall portion 26 intersect.

The pillar 10 is made of a single piece of wood. The pillar 10 may be made of laminated timber. The pillar 10 has a first side 11, a second side 12, a third side 13, and a fourth side 14. The first side 11 is the side opposite the third side 13 and is adjacent to the second side 12 and the fourth side 14. The second side 12 is the side opposite the fourth side 14. The second side 12 is perpendicular to the first side 11. The third side 13 is perpendicular to the second side 12. The fourth side 14 is perpendicular to the third side 13. The pillar 10 has a corner facing the room (hereinafter, the room side corner 15). The room side corner 15 is made up of the first side 11 and the second side 12.

In this embodiment, the first inner wall material 21 is arranged so as to intersect with the first side surface 11. For example, the first inner wall material 21 is arranged so as to be perpendicular to the first side surface 11. The second inner wall material 22 is arranged so as to intersect with the second side surface 12. For example, the second inner wall material 22 is arranged so as to be perpendicular to the second side surface 12. The first side surface 11 faces in the same direction as the indoor surface of the second inner wall material 22. The second side surface 12 faces in the same direction as the indoor surface of the first inner wall material 21. The third side surface 13 faces in the same direction as the outdoor surface of the second outer wall portion 26. The fourth side surface 14 faces in the same direction as the outdoor surface of the first outer wall portion 25.

The inside corner fitting 30 fixes the first interior wall material 21 and the second interior wall material 22 to the pillar 10 at the inside corner 4 of the room.
The inside corner fitting 30 is made of a metal plate. In one example, the inside corner fitting 30 is made of iron sheet metal. For example, the thickness of the inside corner fitting 30 is 0.5 mm or more and 1.0 mm or less. In one example, the thickness of the inside corner fitting 30 is 0.6 mm. The inside corner fitting 30 extends along the column 10. The length of the inside corner fitting 30 as a building material is, for example, 2500 mm. The inside corner fitting 30 is cut according to the height of the ceiling of the room to which the first interior wall material 21 or the second interior wall material 22 is attached. When the height from the floor to the ceiling is 2500 mm or more, two inside corner fittings 30 are used.

The inside corner fitting 30 includes a first fixing portion 41, a second fixing portion 51, a first support portion 43, a second support portion 53, a first connecting portion 42, and a second connecting portion 52.

The inside corner fitting 30 is composed of two members. Specifically, the inside corner fitting 30 includes a first member 31 and a second member 32 that is independent of the first member 31. The first member 31 is composed of iron sheet metal. The second member 32 is composed of iron sheet metal.

The first member 31 will be described with reference to FIG. 2. The first member 31 is configured to support one of the first inner wall material 21 and the second inner wall material 22. In this embodiment, the first member 31 supports the first inner wall material 21.

The first member 31 includes a first fixing portion 41 fixed to the first side surface 11 of the pillar 10, a first connecting portion 42, a first support portion 43 supporting the first inner wall material 21, and a third fixing portion 44 extending from the first support portion 43 and fixed to the second side surface 12 of the pillar 10. In a plan view of the first member 31, the first fixing portion 41, the first connecting portion 42, the first support portion 43, and the third fixing portion 44 are connected in this order.

The first member 31 has the following configuration when attached to the column 10. The first fixing portion 41 is fixed to a position away from the indoor side corner 15 on the first side 11 of the column 10. The first connecting portion 42 extends obliquely from the end of the first fixing portion 41 so as to move away from the first side 11 of the column 10 in a plan view. The first support portion 43 extends from the end of the first connecting portion 42 toward the indoor side corner 15. The first support portion 43 extends parallel to the second side 12 of the column 10. The third fixing portion 44 is connected to the first support portion 43 via a step portion 45. The step portion 45 is configured to contact the vicinity of the indoor side corner 15 on the first side 11. The third fixing portion 44 is fixed to a position near the indoor side corner 15 on the second side 12 of the column 10.

The first connecting portion 42 connects the first fixed portion 41 and the first support portion 43. The first connecting portion 42 is disposed at an angle to the first fixed portion 41 and the first support portion 43 in a plan view. The angle A1 between the first connecting portion 42 and the first support portion 43 of the first member 31 is 20 degrees or more. The angle A1 between the first connecting portion 42 and the first support portion 43 of the first member 31 is 45 degrees or less.

The second member 32 will be described with reference to FIG. 3. The second member 32 is configured to support one of the first inner wall material 21 and the second inner wall material 22. In this embodiment, the second member 32 supports the second inner wall material 22.

The second member 32 includes a second fixing portion 51 fixed to the second side surface 12 of the column 10, a second connecting portion 52, a second support portion 53 supporting the second inner wall material 22, and a contact portion 54 extending from the second support portion 53 and contacting the first support portion 43. In a plan view of the second member 32, the second fixing portion 51, the second connecting portion 52, the second support portion 53, and the contact portion 54 are connected in this order.

The second member 32 has the following configuration when attached to the pillar 10.
The second fixing portion 51 is fixed to a position away from the indoor side corner 15 on the second side surface 12 of the column 10. The second fixing portion 51 is configured not to overlap with the third fixing portion 44 in an installation state in which the first member 31 and the second member 32 are fixed to the column 10. The second connecting portion 52 extends obliquely from the end of the second fixing portion 51 so as to move away from the second side surface 12 of the column 10 in a plan view. The second support portion 53 extends from the end of the second connecting portion 52 toward the indoor side corner 15. The second support portion 53 extends parallel to the first side surface 11 of the column 10. The contact portion 54 extends from the end of the second support portion 53 so as to be along the first support portion 43 of the first member 31.

The second connecting portion 52 connects the second fixed portion 51 and the second support portion 53. The second connecting portion 52 is disposed at an angle to the second fixed portion 51 and the second support portion 53 in a plan view. The angle A2 between the second connecting portion 52 and the second support portion 53 of the second member 32 is 20 degrees or more. The angle A2 between the second connecting portion 52 and the second support portion 53 of the second member 32 is 45 degrees or less.

As shown in FIG. 4, when the first member 31 and the second member 32 are attached to the column 10, the first support portion 43 is arranged parallel to the second side surface 12 of the column 10, and the second support portion 53 is arranged parallel to the first side surface 11 of the column 10. The first support portion 43 and the second support portion 53 are arranged so as to be perpendicular to each other. The corner formed by the first support portion 43 and the second support portion 53 is located near the indoor side corner 15 of the column 10.

The function of the inside corner fitting 30 will now be described.
If the strength of the inside corner fitting 30 is low, there is a risk that the inside corner fitting 30 will be deformed by the attachment of the first interior wall material 21 and the second interior wall material 22. If the first support portion 43 or the second support portion 53 of the inside corner fitting 30 is deformed so as to be pressed outward, the position of the first interior wall material 21 or the second interior wall material 22 will shift. This will not look good. If the first interior wall material 21 and the second interior wall material 22 are misaligned from their designated positions, there is a risk that wrinkles will occur in the wallpaper applied to the interior corner 4.

In this embodiment, in the inside corner fitting 30, the first support portion 43 is supported by the first connecting portion 42. Therefore, the first support portion 43 is strong against forces acting perpendicularly to the first inner wall material 21. The second support portion 53 is supported by the second connecting portion 52. Therefore, the second support portion 53 is strong against forces acting perpendicularly to the second inner wall material 22. In this way, the inner wall material can be firmly supported.

<Indoor corner installation method>
A method of constructing the interior corner 4 will be described with reference to Figs.
The method for constructing the interior corner 4 includes a step of fixing the first inner wall material 21 and the second inner wall material 22 to the column 10 via the inside corner fittings 30 (hereinafter referred to as the inside corner forming step), and a step of arranging the first insulating material 6 and the second insulating material 7. The inside corner forming step includes the first to fourth steps. In one example, after the outer wall portion 24 is provided on the column 10, the inner wall portion 20 is provided by the first to fourth steps. The first insulating material 6 is attached after the first member 31 is attached and before the first inner wall material 21 is attached. The second insulating material 7 is attached after the second member 32 is attached and before the second inner wall material 22 is attached. Note that the outer wall portion 24 is not shown in Figs. 5 to 9.

As shown in FIG. 5, in the first step, the first member 31 is fixed to the column 10. In the first step, the first member 31 is positioned so that the step portion 45 of the first member 31 abuts against the interior corner 15 of the column 10. As a result, the first support portion 43 of the first member 31 is arranged parallel to the second side surface 12 of the column 10 and arranged so as to be approximately flush with the second side surface 12 of the column 10. With the first member 31 positioned on the column 10 in this manner, the first fixing portion 41 of the first member 31 is fixed to the first side surface 11 of the column 10 with a screw 58, and the third fixing portion 44 of the first member 31 is fixed to the second side surface 12 of the column 10 with a screw 58.

As shown in FIG. 6, in the second step, the second member 32 is fixed to the pillar 10. In the second step, the second member 32 is positioned so that the corner 55 between the second support portion 53 and the contact portion 54 of the second member 32 is located at the step portion 45. As a result, the second support portion 53 of the second member 32 is arranged parallel to the first side surface 11 of the pillar 10 and arranged so as to be approximately flush with the first side surface 11 of the pillar 10. With the second member 32 positioned on the pillar 10 in this manner, the second fixing portion 51 of the second member 32 is fixed to the second side surface 12 of the pillar 10 with a screw 58, and the contact portion 54 of the second member 32 is brought into contact with the first support portion 43 of the first member 31.

As shown in FIG. 7, after the first member 31 and the second member 32 are attached to the pillar 10, the first insulating material 6 and the second insulating material 7 are attached. For example, from inside the room, the first insulating material 6 is attached to the first inner wall material 21, and the second insulating material 7 is further attached to the second inner wall material 22. When attaching the first insulating material 6, the first insulating material 6 is attached so that the end of the first insulating material 6 contacts the first side surface 11 of the pillar 10 and the first connecting portion 42 of the first member 31. During this attachment, the end of the first insulating material 6 may be deformed, or the corner of the end of the first insulating material 6 may be cut off.

When attaching the second insulating material 7, the second insulating material 7 is attached so that the end of the second insulating material 7 contacts the second side surface 12 of the column 10 and the second connecting portion 52 of the second member 32. During this attachment, the end of the second insulating material 7 may be deformed, or the corner of the end of the second insulating material 7 may be cut off.

As shown in FIG. 8, in the third step, the first inner wall material 21 is fixed to the first member 31. In the third step, the first inner wall material 21 is positioned so that the contact portion 54 of the second member 32 is sandwiched between the first support portion 43 of the first member 31 and the first inner wall material 21, and a screw 58 is driven through the first inner wall material 21 and the first support portion 43 of the first member 31. In this manner, the first inner wall material 21 is fixed to the first support portion 43.

In the fourth step, the second inner wall material 22 is fixed to the second member 32. The second inner wall material 22 is fixed to the second support portion 53 by driving a screw 58 through the second inner wall material 22 and the second support portion 53.

Figure 9 shows the structure of an interior corner 4 of the reference example. In the interior corner 4 of the reference example, the first interior wall material 21 and the second interior wall material 22 are fixed to the pillar 10 by a wooden square timber 60. When using such a wooden square timber 60, a space 61 is formed behind the wooden square timber 60 when the first insulation material 6 and the second insulation material 7 are arranged. This space 61 reduces the insulation properties of the exterior wall 2. For this reason, additional insulation material 62 cut into small pieces is packed in to fill the space 61. This type of work is time-consuming.

In this regard, the inside corner fitting 30 forms an inclined surface between the first side surface 11 of the column 10 and the first inner wall material 21 by the first connecting portion 42. This structure makes it easy to deform the end of the first insulation material 6 to fit along the first side surface 11 of the column 10 and the first connecting portion 42. In addition, the inside corner fitting 30 forms an inclined surface between the second side surface 12 of the column 10 and the second inner wall material 22 by the second connecting portion 52. This structure makes it easy to deform the end of the second insulation material 7 to fit along the second side surface 12 of the column 10 and the second connecting portion 52.

In this way, the inside corner fitting 30 allows the first insulation material 6 and the second insulation material 7 to be attached without using additional insulation material 62, so that no space 61 is created around the column 10. This reduces the amount of work required to attach the insulation material compared to the indoor inside corner 4 in the reference example.

<Buildings>
Fig. 10 is a cross-sectional view of a building 1 in which the first floor is cut along a horizontal plane. The building 1 includes an exterior wall 2. The exterior wall 2 has a corner 3. The corner 3 has the same structure as the corner 3 in Fig. 1. An inside corner fitting 30 is provided on a column 10. A first interior wall material 21 and a second interior wall material 22 are fixed to the column 10 by the inside corner fitting 30.

The inside corner fitting 30, the method of installing the interior corner 4, and the effects of the building 1 will be described.
(1) The inside corner fitting 30 includes a first fixing portion 41, a second fixing portion 51, a first support portion 43 that supports the first interior wall material 21, a second support portion 53 that supports the second interior wall material 22, a first connecting portion 42, and a second connecting portion 52. The first connecting portion 42 is disposed obliquely to the first fixing portion 41 and the first support portion 43 in a plan view, and connects the first fixing portion 41 and the first support portion 43. The second connecting portion 52 is disposed obliquely to the second fixing portion 51 and the second support portion 53 in a plan view, and connects the second fixing portion 51 and the second support portion 53.

According to this configuration, the first support portion 43 is supported by the first connecting portion 42. Therefore, the first support portion 43 is strong against forces acting perpendicularly to the first inner wall material 21. The second support portion 53 is supported by the second connecting portion 52. Therefore, the second support portion 53 is strong against forces acting perpendicularly to the second inner wall material 22. In this way, the first inner wall material 21 and the second inner wall material 22 can be firmly supported.

(2) The inside corner fitting 30 includes a first member 31 and a second member 32 that is independent of the first member 31. The first member 31 includes a first fixing portion 41, a first connecting portion 42, a first support portion 43, and a third fixing portion 44. The third fixing portion 44 extends from the first support portion 43 and is fixed to the second side surface 12 of the column 10. The second member 32 includes a second fixing portion 51, a second connecting portion 52, a second support portion 53, and a contact portion 54 that extends from the second support portion 53 and contacts the first support portion 43. With this configuration, the structure of the first member 31 and the structure of the second member 32 can be simplified. This makes it easier to manufacture the inside corner fitting 30.

(3) The third fixing portion 44 of the first member 31 is connected to the first support portion 43 via the step portion 45. The step portion 45 is configured to contact the first side surface 11 of the pillar 10 together with the first fixing portion 41. With this configuration, the third fixing portion 44 can be easily positioned at a predetermined position by abutting the step portion 45 of the first member 31 against the corner of the pillar 10. In this manner, the first member 31 can be positioned relative to the pillar 10.

(4) The second fixing portion 51 of the second member 32 is configured so as not to overlap with the third fixing portion 44 when the first member 31 and the second member 32 are attached to the pillar 10. With this configuration, the second fixing portion 51 does not interfere with the third fixing portion 44, and therefore the second fixing portion 51 can be brought into direct contact with the pillar 10. Therefore, the second fixing portion 51 can be easily fixed to the pillar 10 with the screw 58.

(5) The first member 31 is made of a single sheet metal. The second member 32 is made of a single sheet metal. This configuration simplifies the manufacture of the first member 31 and the second member 32 compared to when the first member 31 and the second member 32 are made of multiple members.

(6) The angle A1 between the first connecting portion 42 and the first supporting portion 43 of the first member 31 is 20 degrees or more. The angle A2 between the second connecting portion 52 and the second supporting portion 53 of the second member 32 is 20 degrees or more.

This configuration prevents the screw 58 for fixing the first inner wall material 21 to the first support portion 43 from contacting the first connecting portion 42. It prevents the screw 58 for fixing the second inner wall material 22 to the second support portion 53 from contacting the second connecting portion 52. This reduces the risk of the first connecting portion 42 and the second connecting portion 52 being deformed by the driving of the screw 58.

(7) The angle A1 between the first connecting portion 42 and the first support portion 43 of the first member 31 is 45 degrees or less. The angle A2 between the second connecting portion 52 and the second support portion 53 of the second member 32 is 45 degrees or less. With this configuration, the arrangement space of the first insulating material 6 arranged on the back side of the first inner wall material 21 can be prevented from becoming narrower. The arrangement space of the second insulating material 7 arranged on the back side of the second inner wall material 22 can be prevented from becoming narrower.

(8) The building 1 has an exterior wall 2. The exterior wall 2 has a corner 3. The corner 3 includes a pillar 10, a first interior wall material 21 and a second interior wall material 22 that form an interior corner 4, and an interior corner fitting 30 that fixes the first interior wall material 21 and the second interior wall material 22 to the pillar 10. The interior corner fitting 30 includes a first fixing portion 41, a second fixing portion 51, a first support portion 43, a second support portion 53, a first connecting portion 42, and a second connecting portion 52.

According to this configuration, the first support portion 43 is supported by the first connecting portion 42. Therefore, the first support portion 43 is strong against forces acting perpendicularly to the first inner wall material 21. The second support portion 53 is supported by the second connecting portion 52. Therefore, the second support portion 53 is strong against forces acting perpendicularly to the second inner wall material 22. In this way, the first inner wall material 21 and the second inner wall material 22 can be firmly supported.

(9) In the building 1, the exterior wall 2 further includes a first exterior wall portion 25, a second exterior wall portion 26, a first insulating material 6, and a second insulating material 7. An end of the first insulating material 6 is arranged so as to contact the column 10 and the first connecting portion 42. An end of the second insulating material 7 is arranged so as to contact the column 10 and the second connecting portion 52. With this configuration, there are few gaps near the column 10. Therefore, the insulating properties of the exterior wall 2 near the interior corner 4 can be improved.

(10) The construction method for an interior corner 4 includes a step of fixing a first interior wall material 21 and a second interior wall material 22 to a column 10 via an interior corner fitting 30. The interior corner fitting 30 includes a first fixing portion 41, a second fixing portion 51, a first support portion 43, a second support portion 53, a first connecting portion 42, and a second connecting portion 52. This configuration improves the strength of the interior corner 4.

(11) The construction method for the interior corner 4 includes a first step of fixing the first member 31 to the pillar 10, a second step of fixing the second member 32 to the pillar 10, a third step of fixing the first interior wall material 21 to the first member 31, and a fourth step of fixing the second interior wall material 22 to the second member 32.

With this configuration, the first member 31 can be fixed to the pillar 10 independently of the second member 32. The second member 32 can be fixed to the pillar 10 independently of the first member 31. This makes it easier to position the first support portion 43 of the first member 31 and the second support portion 53 of the second member 32 in precise positions relative to the pillar 10. This makes it easier to position the first inner wall material 21 and the second inner wall material 22 in predetermined positions.

(12) In the construction method for the interior corner 4, in the first step, the first fixing portion 41 of the first member 31 is fixed to the first side surface 11 of the pillar 10 with a screw 58, and the third fixing portion 44 of the first member 31 is fixed to the second side surface 12 of the pillar 10 with a screw 58. With this configuration, the first member 31 is fixed to the first side surface 11 and the second side surface 12. Therefore, the first member 31 can be firmly fixed to the pillar 10.

<Modification>
The above embodiment is an example of the configuration that the inside corner fitting 30 and the building 1 can take, and is not intended to limit the configuration. The inside corner fitting 30 and the building 1 can take a configuration different from that exemplified in the above embodiment. Such an example is a configuration in which part of the configuration of the embodiment is replaced, changed, or omitted, or a configuration in which a new configuration is added to the embodiment. Modified examples of the embodiment are shown below.

The step portion 45 may be omitted from the first member 31 of the inside corner fitting 30. Even if the step portion 45 is omitted, the first member 31 is positioned relative to the column 10 by contacting the first fixing portion 41 with the first side surface 11 of the column 10 and contacting the third fixing portion 44 with the second side surface 12 of the column 10.

When attaching the second member 32 of the inside corner fitting 30 to the column 10, the contact portion 54 may be temporarily fixed to the first member 31. For example, the contact portion 54 may be temporarily fixed to the first support portion 43 of the first member 31 by adhesive.

In the embodiment, an example has been described in which the inside corner fittings 30 are provided to form an interior corner 4 at the corner 3 of the exterior wall 2, but the use of the inside corner fittings 30 is not limited to this. The inside corner fittings 30 are also used in places other than the corner 3 of the exterior wall 2. For example, as shown by arrow A in Figure 10, the inside corner fittings 30 are used in the part where the interior corner 4 is formed at the part where two exterior walls 2 intersect in a T shape.

1...building, 2...exterior wall, 3...corner, 4...indoor corner, 6...first insulation material, 7...second insulation material, 10...pillar, 11...first side, 12...second side, 21...first interior wall material, 22...second interior wall material, 25...first exterior wall portion, 26...second exterior wall portion, 30...corner fitting, 31...first member, 32...second member, 41...first fixing portion, 42...first connecting portion, 43...first support portion, 44...third fixing portion, 45...step portion, 51...second fixing portion, 52...second connecting portion, 53...second support portion, 54...contact portion, 58...screw.

Claims (9)

An interior corner fitting that fixes an interior wall material that constitutes an interior corner of a room to a pillar,
a first member; and a second member independent of the first member;
A first fixing portion fixed to a first side surface of the pillar;
a second fixing portion fixed to a second side surface of the pillar that intersects with the first side surface;
A first support portion that supports a first inner wall material arranged so as to intersect with the first side surface;
A second support portion that supports a second inner wall material arranged so as to intersect with the second side surface;
a first connecting portion disposed obliquely with respect to the first fixed portion and the first support portion in a plan view and connecting the first fixed portion and the first support portion;
a second connecting portion disposed obliquely with respect to the second fixed portion and the second support portion in a plan view and connecting the second fixed portion and the second support portion ,
the first member includes the first fixing portion, the first connecting portion, the first support portion, and a third fixing portion extending from the first support portion and fixed to the second side surface of the pillar,
The second member includes the second fixing portion, the second connecting portion, the second support portion, and a contact portion extending from the second support portion and contacting the first support portion.
Inside corner fittings. the third fixing portion of the first member is connected to the first support portion via a step portion,
The step portion is configured to contact the first side surface of the pillar together with the first fixing portion.
The inside corner fitting according to claim 1 . The second fixing portion of the second member is configured not to overlap with the third fixing portion in an attachment state in which the first member and the second member are fixed to the pillar.
The inside corner fitting according to claim 1 or 2 . The first member is formed of a single metal plate,
The second member is formed of a single metal plate.
The inside corner fitting according to any one of claims 1 to 3 . an angle between the first connecting portion and the first supporting portion of the first member is 20 degrees or more;
5. The inside corner fitting according to claim 1, wherein an angle between the second connecting portion and the second support portion of the second member is equal to or greater than 20 degrees. an angle between the first connecting portion and the first supporting portion of the first member is 45 degrees or less;
The inside corner fitting according to claim 5 , wherein an angle between the second connecting portion and the second support portion of the second member is 45 degrees or less. A building having an exterior wall,
The outer wall has a corner,
The corner portion comprises a pillar, first and second interior wall materials that form an interior corner of an interior room, an interior corner fitting that fixes the first and second interior wall materials to the pillar , a first exterior wall portion arranged parallel to the first interior wall material, a second exterior wall portion arranged parallel to the second interior wall material, a first insulating material arranged between the first interior wall material and the first exterior wall portion, and a second insulating material arranged between the second interior wall material and the second exterior wall portion,
The inside corner fitting is
a first fixing portion fixed to a first side surface of the pillar, a second fixing portion fixed to a second side surface of the pillar intersecting the first side surface, a first support portion supporting the first inner wall material arranged to intersect with the first side surface, a second support portion supporting the second inner wall material arranged to intersect with the second side surface, a first connecting portion arranged diagonally with respect to the first fixing portion and the first support portion in a planar view and connecting the first fixing portion and the first support portion, and a second connecting portion arranged diagonally with respect to the second fixing portion and the second support portion in a planar view and connecting the second fixing portion and the second support portion ,
An end of the first insulating material is arranged to contact the column and the first connecting portion,
An end of the second insulating material is arranged to contact the column and the second connecting portion.
Building. A method for constructing an interior corner , comprising the steps of fixing an interior wall material to a pillar via an interior corner fitting,
The inside corner fitting is
a first member; and a second member independent of the first member;
A first fixing portion fixed to a first side surface of the pillar;
a second fixing portion fixed to a second side surface of the pillar that intersects with the first side surface;
A first support portion that supports a first inner wall material arranged so as to intersect with the first side surface;
A second support portion that supports a second inner wall material arranged so as to intersect with the second side surface;
a first connecting portion disposed obliquely with respect to the first fixed portion and the first support portion in a plan view and connecting the first fixed portion and the first support portion;
a second connecting portion disposed obliquely with respect to the second fixed portion and the second support portion in a plan view and connecting the second fixed portion and the second support portion ,
the first member includes the first fixing portion, the first connecting portion, the first support portion, and a third fixing portion extending from the first support portion and fixed to the second side surface of the pillar,
the second member includes the second fixing portion, the second connecting portion, the second support portion, and a contact portion extending from the second support portion and contacting the first support portion,
A first step of fixing the first member to the pillar;
a second step of fixing the second member to the pillar;
a third step of fixing the first inner wall material to the first member;
A fourth step of fixing the second inner wall material to the second member.
How to construct an interior corner. In the first step, the first fixing portion of the first member is fixed to the first side surface of the pillar with a screw, and the third fixing portion of the first member is fixed to the second side surface of the pillar with a screw.
The construction method for an indoor corner according to claim 8 .

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