Runner receiving metal fitting and wall structure

Abstract

[Problem] To provide a runner receiving metal fitting and a wall structure capable of reducing work effort. [Solution] A runner receiving metal fitting 1 is interposed between a structural beam 5 of a building and a runner material 19 laid on the structural beam 5 and forming a substrate of an indoor wall surface. The runner receiving metal fitting 1 comprises: a main body 20 that includes a bottom surface plate 22 fixed to an upper surface of the structural beam 5, a receiving portion 23 that is disposed above the bottom surface plate 22 with a distance therebetween and has a tool insertion gap 28, and a connection portion 24 connecting the bottom surface plate 22 and the receiving portion 23; and an upper surface body 21 that is disposed in the receiving portion 23 in parallel with the bottom surface plate 22 so as to close the tool insertion gap 28, and is capable of transitioning to a state where the tool insertion gap 28 is opened, the upper surface body 21 having the runner material 19 fixed thereto.

Description

Runner support fitting, and wall structure

[0001] The present invention relates to a runner support fitting provided on a structural beam for supporting a runner material.

[0002] Conventionally, as a structure of an interior wall such as a partition wall, a partition wall, or a partition, there is a structural beam that supports a floor slab on the upper surface of one side in the width direction of the upper flange, and a mortar receiving plate having an L-shaped cross section that is supported on the side where the floor slab is not supported on the upper surface of the upper flange, mortar filled between the mortar receiving plate and the floor slab, a runner material supported by the mortar, a stud supported by the runner material, and a fireproof covering material covering the floor beam (see, for example, Patent Document 1). According to this structure, the upper surface of the structural beam can be covered with the floor slab and mortar, and the fireproof covering material does not need to be wound up to the upper surface of the structural beam. [[ID=...]]

[0003] However, in the structure of the interior wall as described above, there is a possibility that the accuracy of the wavy wall finish deteriorates due to the filling pressure of the mortar on the mortar receiving plate. Therefore, a structure has been proposed in which a metal runner support fitting is used to fix the runner material instead of the mortar (see Patent Document 2). In this structure, the runner support fitting is formed in a U-shape in side view, and one end of the fireproof covering material that covers the beam from below is wound inside the runner support fitting and connected to the side surface of the floor slab above the structural beam, thereby fireproof covering the structural beam.

[0004] Japanese Unexamined Patent Application Publication No. 2020-133172, Japanese Unexamined Patent Application Publication No. 2023-106678

[0005] The runner support fitting as in Patent Document 2 abuts the lower surface of the U-shaped runner support fitting on the upper surface of the structural beam and is fastened with bolts and nuts. However, since there is no gap for inserting a power tool into the runner support fitting, the fastening work of the bolts and nuts is performed using a manual tool such as a spanner or a wrench, and the construction takes time.

[0006] Therefore, an object of the present invention is to provide a runner support fitting and a wall structure that can reduce the labor. [[ID=...]]

[0007] The first invention, which solves the above problems, is a runner support fitting interposed between a structural beam of a building and a runner material laid on the structural beam to form the base of an interior wall, comprising: a main body having a bottom plate fixed to the upper surface of the structural beam; a receiving portion positioned above the bottom plate at a distance from it and having a tool insertion gap; and a connecting portion connecting the bottom plate and the receiving portion; and an upper body positioned parallel to the bottom plate and on the receiving portion so as to close the tool insertion gap, and which can be moved to a state where the tool insertion gap is open, and on which the runner material is fixed.

[0008] The second invention is a runner support fitting of the first invention, wherein the main body is formed by bending a metal plate, and the upper body is flat and thinner than the metal plate forming the main body.

[0009] The third invention is a runner receiving fitting of the first or second invention, wherein the upper body is slidably fixed to the receiving portion, and the sliding motion transitions between an open state and a closed state for the tool insertion gap.

[0010] The fourth invention is a runner receiving fitting according to the first to third inventions, wherein the upper body is detachably engaged with the receiving portion to close the tool insertion gap.

[0011] Although the third invention, in which the upper body is slidable relative to the receiving portion, and the fourth invention, in which the upper body is detachably engaged with the receiving portion, are described above, the upper body may have any configuration that allows it to transition between a state in which the tool insertion gap of the receiving portion is closed and a state in which it is open.

[0012] The fifth invention is a wall structure formed by fixing the runner material on the runner support fittings of the first to fourth inventions, erecting studs on the runner material to form a wall base, and attaching an interior wall surface material to the wall base, wherein the main body of the runner support fitting is U-shaped in side view, and the end of a fire-resistant covering material that covers at least the side of the structural beam is attached to the upper surface of the bottom plate of the runner support fitting.

[0013] The sixth invention is a wall structure of the fifth invention, wherein the interior wall surface material is arranged across the runner material and the lower floor wall base formed below the structural beam and fixed to each of them.

[0014] According to the runner support fitting of the first invention, the main body comprises a bottom plate, a receiving portion positioned above the bottom plate at a distance, and a connecting portion connecting the bottom plate and the receiving portion. A tool insertion gap is formed in the receiving portion of the main body, and an upper body is formed to be positioned parallel to the bottom plate in the receiving portion so as to close the tool insertion gap, and to be able to move to a state where the tool insertion gap is open. By moving the upper body to a state where the tool insertion gap is open, a tool can be inserted into the tool insertion gap from above and bolts and nuts can be fastened to fix the runner support fitting to the structural beam. Alternatively, by moving the upper body to a state where the tool insertion gap is closed, the runner material can be screwed onto the upper body, thereby reducing the labor required for construction.

[0015] According to the runner support fitting of the second invention, the upper body is formed thinner than the metal plate forming the main body, so the runner support fitting as a whole can be formed with sufficient strength, and because the upper body, which is the position where the runner material is fixed, is thin, it is easier to drive screws when fixing the runner material, so that the labor of construction can be reduced while maintaining sufficient strength.

[0016] According to the runner support fitting of the third invention, the upper body is slidably fixed to the receiving part, allowing the tool insertion gap to transition between an open and closed state. Therefore, when fixing the runner support fitting to a structural beam, the tool insertion gap can be opened while a part of the upper body is hooked onto the receiving part. This allows a tool to be inserted into the tool insertion gap to fasten the main body to the structural beam, and then the upper body, which is partially hooked onto the receiving part, can be slid to close the tool insertion gap. This eliminates the need to separately store the upper body during the work, thus reducing the effort required during construction.

[0017] According to the runner support fitting of the fourth invention, since the upper body is detachably engaged with the receiving part, when fixing the runner support fitting to the structural beam, the upper body can be removed from the receiving part to open the tool insertion gap, a tool can be inserted into the tool insertion gap to fasten the main body to the structural beam, and then the tool insertion gap can be closed by attaching the upper body to the receiving part. This reduces construction time with an extremely simple shape.

[0018] According to the wall structure of the fifth invention, the main body of the runner support bracket is U-shaped in side view, and the end of the fire-resistant covering material that covers at least the side of the structural beam is attached to the upper surface of the bottom plate of the runner support bracket, so that the fire-resistant covering material can be wrapped around to the upper surface of the structural beam without interfering with the runner support bracket.

[0019] According to the wall structure of the sixth invention, the interior wall surface material is positioned across the runner material and the lower floor wall base formed below the structural beam and fixed to each of them, so that the upper and lower wall base materials are connected by the interior wall surface material, and the wall structure can be formed firmly.

[0020] A cross-sectional view illustrating the overall structure of the wall structure. A perspective view illustrating the runner support bracket with the top body removed from the receiving part. A perspective view illustrating the runner support bracket with the top body attached to the receiving part. A cross-sectional view of the runner support bracket viewed from the side. A diagram illustrating the process of fixing the main body of the runner support bracket to the upper flange of the structural beam. A diagram illustrating the process of attaching the top body to the main body of the runner support bracket. A diagram illustrating the process of attaching the runner to the top body of the runner support bracket. An exploded perspective view illustrating a modified example of the runner support bracket. A perspective view illustrating the modified runner support bracket with the tool insertion gap covered. A perspective view illustrating the modified runner support bracket with the tool insertion gap open. A cross-sectional view illustrating the first modified example of the wall structure. A cross-sectional view illustrating the second modified example of the wall structure.

[0021] The embodiments of the runner support bracket 1 and wall structure 2 of the present invention will be described below with reference to the figures. The wall structure 2 is, for example, a partition wall structure that separates a dwelling unit 3 and an atrium 4 in an apartment building. The building in the present invention is not limited to apartment buildings, but may be various facilities or detached houses, etc. Furthermore, the wall structure 2 is not limited to a partition wall, but may be, for example, a partition wall, a vertical shaft partition such as an elevator room, or a common corridor wall separating an outdoor common corridor from a dwelling unit, and the wall structure 2 should have fire resistance to prevent the spread of fire in the event of a fire. Furthermore, the wall structure 2 is not limited to separating a dwelling unit 3 and an atrium 4, but may separate two spaces where one side of the wall structure 2 is at a normal floor height and the other side is at a low floor height, such as a bathroom, or it may separate two spaces where both sides of the wall structure 2 are atriums or low floors.

[0022] As shown in Figure 1, the wall structure 2 comprises a structural beam 5 supported by a structural column (not shown), a lower floor wall base 6 whose upper end is fixed to the structural beam 5, a floor slab 7 whose end is fixed to half of the widthwise upper surface of the structural beam 5, a runner support bracket 1 fixed to the upper surface of the structural beam 5 on the side opposite to the floor slab 7, an upper floor wall base 8 fixed to the upper surfaces of the floor slab 7 and the runner support bracket 1 respectively, a fire-resistant covering material 9 covering the structural beam 5, and an interior wall surface material 10 fixed to the upper floor wall base 8 and the lower floor wall base 6.

[0023] The structural beam 5 is formed from an H-shaped steel beam horizontally erected by connecting the upper and lower flanges 11 and 12 with a web 13. Although not shown, the upper and lower flanges 11 and 12 are provided with circular holes for fixing various members. The structural beam 5 is combined with the structural column to form the structural frame of a heavy steel frame structure. A runner attachment member (not shown) is attached to the lower flange 12 of the structural beam 5 and supports the upper end of the lower floor wall base 6. The lower floor wall base 6 is a steel base formed by combining lower floor runner members 15 provided on the floor and ceiling surfaces of the lower floor and a plurality of lower floor studs 16 erected between the lower floor runner members 15. Of the lower floor runner members 15 that make up the lower floor wall base 6, the upper lower floor runner member 15 is fixed to the lower flange 12 via a runner attachment member.

[0024] The floor slab 7 is, for example, an ALC (Autoclaved Lightweight Concrete) panel. The ends of the floor slab 7 are placed and fixed to half of the width of the upper flange 11 of the structural beam 5. The side surface of the floor slab 7 is located approximately in the center of the width of the upper surface of the upper flange 11 of the structural beam 5. A moisture-proof sheet 17 and particle board 18 are laid on the upper surface of the floor slab 7 to form a floor finishing layer. The floor slab 7 is connected to the upper flange 11 of the structural beam 5 by fixing fittings (not shown).

[0025] The runner support fitting 1 is a fitting installed between the structural beam 5 and the runner material 19, which is laid on the structural beam 5 and forms the upper floor wall base 8. As shown in Figure 2, the runner support fitting 1 comprises a main body 20 fixed to the structural beam 5 and an upper body 21 to which the runner material 19 is fixed.

[0026] The main body 20 is U-shaped in side view and has a rectangular flat bottom plate 22 fixed to the upper surface of the structural beam 5, a receiving portion 23 positioned parallel to and above the bottom plate 22 at a distance, and a connecting portion 24 connecting the bottom plate 22 and the receiving portion 23. The main body 20 is formed in a U-shape by bending a flat steel plate. The bottom plate 22 has an insertion hole 27 formed approximately in its center for inserting a bolt 25 to fix the bottom plate 22 to the upper flange 11 of the structural beam 5. The receiving portion 23 is rectangular flat and has a tool insertion gap 28 that is open except for the periphery. The tool insertion gap 28 is a rectangular through hole that is open except for the periphery of the receiving portion 23. The tool insertion gap 28 is not limited to a through hole formed in the receiving portion 23. A part of the peripheral edge of the receiving portion 23 may be open, and the receiving portion 23 may be shaped like a C or a U, with the inside of the C or U shape being the tool insertion gap 28. The bottom plate 22 and the receiving portion 23 are connected by a connecting portion 24. The connecting portion 24 is positioned to extend upward from the center in the width direction of the upper flange 11 of the structural beam 5. The shape of the main body 20 is not limited to a U-shape in side view, but it is preferable that the shape of the bottom plate 22 allows the fire-resistant covering material 9, described later, to be wrapped around the upper surface of the structural beam 5 from the side.

[0027] As shown in Figures 2 and 3, the upper body 21 is positioned above the receiving portion 23 so as to close the tool insertion gap 28. The upper body 21 closes the tool insertion gap 28 by being detachably engaged with the receiving portion 23, and the tool insertion gap 28 can be opened by removing the upper body 21 from the receiving portion 23. The upper body 21 is formed in a flat plate shape with approximately the same size as the receiving portion 23, and a hanging portion 29 is formed at the end of the upper body 21 on the connection portion 24 side, which bends downward and is slightly inserted into the tool insertion gap 28. The hanging portion 29 is formed to be approximately equal in length to the tool insertion gap 28 along the connection portion 24. The hanging portion 29 catches in the tool insertion gap 28, which restricts the movement of the upper body 21 in the longitudinal direction of the structural beam 5 and restricts the movement of the upper body 21 toward the floor slab 7. This prevents the movement of the runner material 19 attached to the upper body 21 when the inner wall material 10 is screwed in with wall fixing screws 37. The shape of the upper body 21 is not limited to this, and for example, it may have a shape in which a hanging portion is formed on the outer circumference of the upper body 21 to cover the receiving portion 23, or it may have a shape in which a rib is fitted into the tool insertion gap 28 on the lower surface of the upper body 21.

[0028] As shown in Figure 4, the main body 20 and the top body 21 are made of the same material and are in the shape of steel plates, with the top body 21 being thinner than the metal plate forming the main body 20. Runner material 19, which will be described later, is fixed to the top body 21 with screws 31.

[0029] As shown in Figure 1, the upper floor wall base 8 is formed by combining runner material 19 fixed to the upper body 21 with screws 31, studs 30 erected on the runner material 19, and ceiling runner material (not shown), and serves as the base for forming the interior wall surface, to which the interior wall surface material 10 is fastened with wall fixing screws 37. By fixing the runner material 19 and studs 30 to the upper body 21, the weight of these runner material 19 and studs 30 prevents the upper body 21 from coming off the main body 20. The runner material 19 and ceiling runner material are formed in a groove shape from steel and face each other. The studs 30 are in the shape of steel rectangular columns and are erected sandwiched between the runner material 19 and ceiling runner material.

[0030] The fire-resistant covering material 9 is made of a fire-resistant material such as heat-resistant rock wool. The fire-resistant covering material 9 covers the structural beam 5 from below. One end of the fire-resistant covering material 9 abuts against the lower surface of the floor slab 7 and is wrapped around the side of the structural beam 5, passing through the lower surface to the opposite side. The other end of the fire-resistant covering material 9 is inserted between the bottom plate 22 and the receiving portion 23 and wrapped around to the upper surface of the bottom plate 22.

[0031] In this embodiment, the interior wall material 10 is a double layer of gypsum board. The interior wall material 10 is fixed to the runner material 19 and studs 30 of the upper floor wall base 8 with wall fixing screws 37, and is also fixed to the lower floor runner material 15 and lower floor studs 16 of the lower floor wall base 6 with wall fixing screws 37. An atrium 4 connecting the upper and lower floors is provided on the outside of the interior wall material 10, and the interior wall material 10 is formed continuously from the upper floor to the lower floor. In addition, wall bases are formed on the upper surface of the floor slab 7 and on the lower flange 12 of the structural beam 5 on the side opposite to the atrium 4, and gypsum board is attached to them, forming the interior walls of the upper and lower floors.

[0032] When constructing the wall structure 2 as described above, first, as shown in Figure 5, the main body 20 of the runner support bracket 1 is fixed to the structural beam 5. The runner support bracket 1 has its upper body 21 removed from the receiving part 23 and stored separately, and the tool insertion gap 28 formed in the receiving part 23 is exposed. The main body 20 is placed on the upper flange 11 of the structural beam 5 so that the connecting part 24 abuts against the side surface of the floor slab 7. At this time, the circular hole formed in the upper flange 11 of the structural beam 5 and the insertion hole 27 formed in the bottom plate 22 of the main body 20 are aligned. Then, the main body 20 and the upper flange 11 are fixed by inserting bolts 25 into the circular hole and insertion hole 27 from below the upper flange 11 and fitting nuts 26 onto the bolts 25 from above the bottom plate 22 and tightening them. Since the tool insertion gap 28 is exposed, the power tool 34 can be inserted from above the main body 20 through the tool insertion gap 28 toward the bottom plate 22, making the tightening of bolts 25 and nuts 26 easier.

[0033] After attaching the main body 20 to the upper flange 11 of the structural beam 5, the fire-resistant covering material 9 is then wrapped around the structural beam 5, as shown in Figure 6, with one end in contact with the lower surface of the floor slab 7 and the other end inserted between the bottom plate 22 and the receiving portion 23, and wrapped up to the upper surface of the bottom plate 22. Then, the upper body 21 is attached to the receiving portion 23 so that the tool insertion gap 28 is closed.

[0034] Subsequently, as shown in Figure 7, the runner material 19 is placed on the upper body 21 and the bottom surface of the runner material 19 is fixed to the upper body 21 with screws 31. At this time, since the upper body 21 is formed thinner than the main body 20 of the runner receiving bracket 1, the screwing work can be made easier. After that, studs 30 are erected on the runner material 19 to form the upper floor wall base 8, and the interior wall surface material 10 is screwed to the lower floor wall base 6 and the upper floor wall base 8 with wall fixing screws 37 to complete the wall structure 2. In this way, the interior wall surface material 10 is positioned across the runner material 19 that forms the upper floor wall base 8 and the lower floor wall base 6 that is formed below the structural beam 5 and is fixed to each of them, so that the upper and lower wall base materials are connected by the interior wall surface material 10, and the indoor wall surface of the atrium 4 can be firmly formed.

[0035] [Modified Runner Receiving Bracket 1] Note that the runner receiving bracket 1 is not limited to the one described above. In the above embodiment, the upper body 21 is detachably engaged with the receiving portion 23, but it is not limited to this. In modified runner receiving bracket 1, the upper body 21 is slidably fixed to the receiving portion 23, and this sliding transitions between an open state and a closed state for the tool insertion gap 28 formed in the receiving portion 23 of the main body 20. Specifically, as shown in Figures 8 to 10, the upper body 21 of the runner receiving bracket 1 has folded-over portions 32 formed on both sides of its edge. The folded-over portions 32 are shaped to allow the side edges 33 of the receiving portion 23 to be inserted, and the upper body 21 is slidable along the side edges 33 of the receiving portion 23. With this type of runner support fitting 1, by sliding the upper body 21, it is possible to transition between a state where the tool insertion gap 28 is closed, as shown in Figure 9, and a state where the tool insertion gap 28 is open, as shown in Figure 10. Therefore, when fixing the runner support fitting 1 to the structural beam 5, as shown in Figure 10, by keeping the tool insertion gap 28 open while a part of the upper body 21 is caught on the receiving part 23, a tool 34 can be inserted into the tool insertion gap 28 to fasten the main body 20 to the structural beam 5, and then the upper body 21, which is partially caught on the receiving part 23, can be slid to close the tool insertion gap 28. This eliminates the need to separately store the upper body 21 during the work, thus reducing the effort required during construction. Note that the mechanism for making the upper body 21 slidable is not limited to the above configuration, and any shape is acceptable as long as the upper body 21 or the receiving part 23 can slide relative to each other.

[0036] [First Modified Example of Wall Structure 2] Note that the wall structure 2 is not limited to the one described above. As shown in Figure 11, the wall structure 2 may also be used to separate two spaces where one side has a normal floor height and the other side has a lower floor height, such as a bathroom. In this wall structure 2, the edge of the first floor slab 35 is placed on one side in the width direction of the upper flange 11 of the structural beam 5 to form a floor of normal height, and the second floor slab 36 is placed at a lower position on the side of the structural beam 5 to form a lower floor. In this floor structure, the interior wall surface material 10 is divided between the upper and lower floors in order to fix the second floor slab 36 to the structural beam 5, but the configuration is the same as in the above embodiment in which the atrium 4 is formed, so a detailed explanation will be omitted.

[0037] [Second Modification of Wall Structure 2] The wall structure 2 may also be used to separate two spaces that have open spaces or low floors on both sides. As shown in Figure 12, in the wall structure 2 that separates two spaces that have open spaces on both sides, the floor slab 7 is not fixed to both sides of the structural beam 5, and runner support brackets 1 are fixed with bolts 25 to both sides in the width direction of the upper flange 11 of the structural beam 5. Above and below the structural beam 5, upper floor wall base 8 and lower floor wall base 6 are formed on both sides of the structural beam 5, respectively, and interior wall surface material 10 is attached to these upper floor wall base 8 and lower floor wall base 6, respectively, so that open spaces are formed on both sides of the structural beam 5.

[0038] As described above, the runner support bracket 1 and wall structure 2 of the embodiments and each modified version of the present invention allow the tool insertion gap 28 to be opened and closed, making it easy to fix the main body 20 of the runner support bracket 1 to the structural beam 5 using a power tool 34. Furthermore, the upper body 21 is formed thinly, making it easy to drive screws when fixing the runner material 19, thus reducing the labor required for construction.

[0039] It goes without saying that the embodiments of the present invention are not limited to those described above, and can be modified as appropriate without departing from the scope of the spirit of the present invention.

[0040] This specification discloses the following technologies:

[0041] [Supplementary Note 1] The runner receiving fitting of Supplementary Note 1 is a runner receiving fitting interposed between a structural beam of a building and a runner material laid on the structural beam to form a base of an interior wall surface. It has a main body having a bottom plate fixed to the upper surface of the structural beam, a receiving portion disposed above the bottom plate with a distance and having a tool insertion gap, and a connecting portion connecting the bottom plate and the receiving portion, and an upper surface body disposed parallel to the receiving portion so as to block the tool insertion gap and capable of shifting to a state where the tool insertion gap is open, and the runner material is fixed to the upper surface body.

[0042] According to the runner receiving fitting of Supplementary Note 1, a tool insertion gap is formed in the receiving portion of the main body including a bottom plate, a receiving portion disposed above the bottom plate with a distance, and a connecting portion connecting the bottom plate and the receiving portion. The upper surface body is disposed parallel to the receiving portion so as to block the tool insertion gap and is formed to be capable of shifting to a state where the tool insertion gap is open. Therefore, by shifting the upper surface body to a state where the tool insertion gap is open, a tool can be inserted into the tool insertion gap from above to fasten bolts and nuts to fix the runner receiving fitting to the structural beam, and by shifting the upper surface body so as to block the tool insertion gap, the runner material can be screwed to the upper surface body, reducing the construction labor.

[0043] [Supplementary Note 2] The runner receiving fitting of Supplementary Note 2 is the runner receiving fitting of Supplementary Note 1, wherein the main body is formed by bending a metal plate, the upper surface body is flat, and is formed thinner than the metal plate forming the main body.

[0044] According to the runner receiving fitting of Supplementary Note 2, since the upper surface body is formed thinner than the metal plate forming the main body, the runner receiving fitting as a whole can be formed with sufficient strength. Because the upper surface body where the runner material is fixed is thin, screwing when fixing the runner material can be performed more easily, so that the construction labor can be reduced while maintaining sufficient strength.

[0045] [Supplementary Note 3] The runner receiving fitting of Supplementary Note 3 is such that in the runner receiving fitting of Supplementary Note 2, the upper surface body is slidably fixed to the receiving portion, and by this sliding, the tool insertion gap shifts between an open state and a closed state.

[0046] According to the runner receiving fitting of Supplementary Note 3, since the upper surface body is slidably fixed to the receiving portion, the tool insertion gap can shift between an open state and a closed state. Therefore, during the operation of fixing the runner receiving fitting to the structural beam, by maintaining a state where a part of the upper surface body is caught by the receiving portion while opening the tool insertion gap, a tool is inserted into the tool insertion gap and the main body is fastened to the structural beam. Then, the upper surface body with a part caught by the receiving portion is slid to close the tool insertion gap, eliminating the need to separately store the upper surface body during the work, and reducing the labor during construction.

[0047] [Supplementary Note 4] The runner receiving fitting of Supplementary Note 4 is such that in the runner receiving fitting of Supplementary Note 2, the upper surface body is detachably engaged with the receiving portion to close the tool insertion gap.

[0048] According to the runner receiving fitting of Supplementary Note 4, since the upper surface body is detachably engaged with the receiving portion, during the operation of fixing the runner receiving fitting to the structural beam, the upper surface body is removed from the receiving portion to open the tool insertion gap, a tool is inserted into the tool insertion gap and the main body is fastened to the structural beam. Then, the upper surface body is attached to the receiving portion to close the tool insertion gap, and the construction labor can be reduced with a very simple shape.

[0049] [Supplementary Note 5] The wall structure of Supplementary Note 5 is a wall structure formed by fixing the runner material on the runner receiving fittings of Supplementary Notes 1 to 4, erecting studs on the runner material to form a wall base, and attaching an inner wall facing material to the wall base. The main body of the runner receiving fitting is U-shaped in side view, and an end portion of a fireproof coating material covering at least the side surface of the structural beam is attached to the upper surface of the bottom plate of the runner receiving fitting.

[0050] According to the wall structure described in Appendix 5, the main body of the runner support bracket is U-shaped in side view, and the end of the fire-resistant covering material that covers at least the side of the structural beam is attached to the upper surface of the bottom plate of the runner support bracket, so that the fire-resistant covering material can be wrapped around the upper surface of the structural beam without interfering with the runner support bracket.

[0051] [Note 6] In the wall structure of Note 6, the interior wall surface material is arranged across the runner material and the lower floor wall base formed below the structural beam, and is fixed to each of them.

[0052] According to the wall structure described in Appendix 6, the interior wall surface material is positioned across the runner material and the lower floor wall base formed below the structural beam and fixed to each of them. As a result, the upper and lower wall base materials are connected by the interior wall surface material, and a strong wall structure can be formed.

[0053] The runner support bracket and wall structure according to the present invention are suitable as runner support brackets and wall structures used in interior walls such as boundary walls, partition walls, and room dividers.

[0054] 1...Runner support bracket, 2...Wall structure, 5...Structural beam, 6...Lower floor staircase substructure, 7...Floor slab, 9...Fireproof covering material, 10...Interior wall surface material, 19...Runner material, 20...Main body, 21...Upper body, 22...Bottom plate, 23...Support part, 24...Connection part, 28...Tool insertion gap

Claims

1. A runner support fitting interposed between a structural beam of a building and a runner material laid on the structural beam to form the base of an interior wall, comprising: a main body having a bottom plate fixed to the upper surface of the structural beam; a receiving portion positioned above the bottom plate at a distance from it and having a tool insertion gap; and a connecting portion connecting the bottom plate and the receiving portion; and an upper body positioned parallel to the bottom plate and on the receiving portion so as to close the tool insertion gap, and capable of transitioning to a state where the tool insertion gap is open, and on which the runner material is fixed.

2. The runner support fitting according to claim 1, characterized in that the main body is formed by bending a metal plate, and the upper surface is flat and thinner than the metal plate forming the main body.

3. The runner support fitting according to claim 2, characterized in that the upper body is slidably fixed to the receiving portion, and the sliding motion causes the tool insertion gap to transition between an open state and a closed state.

4. The runner support fitting according to claim 2, characterized in that the upper body is detachably engaged with the receiving portion to close the tool insertion gap.

5. A wall structure formed by fixing a runner material on a runner support fitting according to any one of claims 1 to 4, erecting studs on the runner material to form a wall base, and attaching an interior wall surface material to the wall base, wherein the main body of the runner support fitting is U-shaped in side view, and the end of a fire-resistant covering material covering at least the side of the structural beam is attached to the upper surface of the bottom plate of the runner support fitting.

6. The wall structure according to claim 5, characterized in that the interior wall surface material is arranged across the runner material and the lower floor wall base formed below the structural beam and fixed to each of them.

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