Floor structure and floor post

Abstract

To provide a floor structure and floor posts capable of ensuring connection strength between the floor posts and bracing members in a simple construction.SOLUTION: In a floor structure 1 comprising a floor material 10 laid in a height direction spaced at intervals above a support surface 2, and a floor post 20 erected on the support surface 2 to support the floor material 10, the floor post 20 comprises a leg portion 21 installed on the support surface 2, a screw member 22 supported by the leg portion 21 and extending upward, and a support bracket 23 attached to an upper end of the screw member 22 to support a substrate of the floor material 10. The leg portion 21 has a side wall portion 25 rising vertically on the support surface 2, and a top plate portion 26 to which the screw member 22 is connected, and the support bracket 23 has an upper side wall portion 37 disposed in the same plane as the side wall portion 25.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a floor structure and a floor beam. [Background technology]

[0002] A known floor structure laid on a foundation or floor slab is one in which floor joists are placed on the floor slab or foundation stones, etc., and joists are supported (see, for example, Patent Documents 1 or 2). Wooden floor joists were previously used, but in recent years, steel or resin joists have become more common as a measure against termites. The steel or resin floor joists have flat plate sections at the top and bottom, and a rod screw section arranged between the flat plate sections, allowing the height dimension to be adjusted. The lower flat plate section is fixed to the surface of the floor slab, etc., and the joists are placed on and fixed to the upper flat plate section. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-170356 [Patent Document 2] Japanese Utility Model Application Publication No. 6-47472 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, when the distance between the supporting surface, such as a floor slab, and the joists is long, steel floor beams are used. Turnbuckles are attached to the threaded portions, and brace material is hung between adjacent turnbuckles. The brace material is fixed to the upper or lower end of the threaded portion by welding or other methods, which poses the problem of requiring a lot of time and effort for installation. In addition, because the outer surface of the threaded portion is curved, the contact area with the brace material is small, and there are cases where the required connection strength cannot be ensured.

[0005] From this perspective, the present invention aims to provide a floor structure and floor beams that can ensure the connection strength between the floor beams and brace materials with simple construction. [Means for solving the problem]

[0006] The first invention for solving the above problems is a floor structure comprising floor materials laid above a support surface at intervals in the height direction, and floor beams erected on the support surface to support the floor materials, wherein the floor beams are configured with legs installed on the support surface, screw members supported by the legs and extending upward, and support fittings attached to the upper ends of the screw members to support the base of the floor materials, the legs having side wall portions that rise vertically above the support surface and a top plate portion to which the screw members are connected, and the support fittings having upper wall portions that are arranged in the same plane as the side wall portions.

[0007] According to the floor structure of the present invention, the side wall portions of the legs of the floor beams and the upper wall portions of the support fittings are both vertical flat surfaces and are arranged in the same plane, so that the brace material can be easily installed and can be connected by simple construction such as bolting, while ensuring the necessary connection strength.

[0008] In the floor structure of the present invention, it is preferable that the leg further has a second wall extending in a direction perpendicular to the side wall. With this configuration, the brace material can be easily connected to the leg in both the X-axis direction and the Y-axis direction.

[0009] Furthermore, the floor structure of the present invention preferably further comprises a reinforcing vertical member stretched between the leg and the support bracket. With this configuration, the reinforcing vertical member can be positioned along the screw member, which can accommodate cases where the distance between the support surface and the floor material is large and the screw member is long.

[0010] Furthermore, in the floor structure of the present invention, the support fittings are composed of a base support fitting on which the base of the floor material is placed and a lower fitting provided below the base support fitting, and the lower fitting preferably has a rectangular upper plate through which the screw members are inserted and three hanging plates hanging down from three sides of the upper plate, the hanging plates forming the upper wall. With this configuration, the brace material can be easily connected to the support fittings in both the X-axis and Y-axis directions.

[0011] The second invention for solving the above problem is a floor beam that is erected on a support surface to support flooring material laid at intervals in the vertical direction above the support surface, and is equipped with legs that are installed on the support surface, screw members that are supported by the legs and extend upward, and support fittings that are attached to the upper ends of the screw members and support the base of the flooring material, wherein the legs have a pair of side wall portions that rise vertically above the support surface and a top plate portion that is suspended between the side wall portions and into which the screw members are screwed, and the support fittings have upper wall portions that are arranged in the same plane as the side wall portions.

[0012] According to the floor beam of the present invention, as in claim 1, the side wall portion of the leg of the floor beam and the upper wall portion of the support bracket are both vertical flat surfaces and arranged in the same plane, so that the brace material can be easily installed and can be connected by simple construction such as bolting, while ensuring the necessary connection strength. [Effects of the Invention]

[0013] The floor structure and floor beams of the present invention have the excellent effect of ensuring the connection strength between the floor beams and the brace material with simple construction. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a side view showing a floor structure according to an embodiment of the present invention. [Figure 2] FIG. 2 is a side view showing the low floor portion of the floor structure according to the embodiment of the present invention. [Figure 3]FIG. 2 is a front view showing the low floor portion of the floor structure according to the embodiment of the present invention. [Figure 4] FIG. 2 is a perspective view showing a low floor portion of the floor structure according to the embodiment of the present invention. [Figure 5] 1A to 1D are diagrams showing the legs of a floor beam according to an embodiment of the present invention, where (a) is a plan view, (b) is a side view, (c) is a front view, and (d) is a bottom view. [Figure 6] FIG. 2 is a perspective view showing the leg of a floor beam according to an embodiment of the present invention. [Figure 7] 1A to 1D are diagrams showing a support fitting for a floor beam according to an embodiment of the present invention, in which (a) is a plan view, (b) is a side view, (c) is a rear view, and (d) is a front view. [Figure 8] FIG. 2 is a perspective view showing a support bracket for a floor beam according to an embodiment of the present invention. [Figure 9] FIG. 2 is a side view showing the raised floor portion of the floor structure according to the embodiment of the present invention. [Figure 10] FIG. 1 is a perspective view showing a raised floor portion of a floor structure according to an embodiment of the present invention. [Figure 11] 10A to 10D are diagrams showing the legs of a floor beam according to a modified example, in which (a) is a plan view, (b) is a side view, (c) is a front view, and (d) is a bottom view. [Figure 12] FIG. 10 is a perspective view showing the leg of a floor beam according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0015] A floor structure and floor beams according to an embodiment of the present invention will be described in detail with reference to the drawings. In this embodiment, the floor structure is used in a step portion such as a staircase, and the configuration of the floor structure will be described using an example in which the floor structure has a low floor portion (see FIGS. 2 to 4) where the height of the floor material is low relative to the support surface, and a high floor portion (see FIGS. 9 and 10) where the height of the floor material is high relative to the support surface. In this embodiment, the direction seen when climbing the step portion is referred to as the front, and the direction seen from the side of the step portion is referred to as the side. The depth direction seen from the front is referred to as the front-to-back direction, and the width direction is referred to as the left-to-right direction. In the following description, the front-to-back, left-to-right directions are set for the convenience of explaining the floor structure, and do not limit the configuration of the floor structure of the present invention.

[0016] As shown in FIG. 1, the floor structure 1 of this embodiment comprises floor materials 10 and floor beams 20. The floor materials 10 are parts that make up the main body of the floor, and are laid above the support surface 2 at intervals in the height direction. The floor materials 10 comprise floor panels 11 and a floor substructure 12. The floor panels 11 are plate materials that make up the floor surface, and are made, for example, of hollow resin plate materials. Both widthwise ends of the floor panels 11 are fixed to the floor substructure 12 via bolts 13.

[0017] The floor substructure 12 is composed of joists 14 and floor joists 15. The joists 14 are made of elongated steel members having a hat-shaped cross section, for example. The joists 14 are fixed to the upper ends of the floor beams 20. The joists 14 are provided in multiple rows and are arranged parallel to each other at a predetermined interval. The floor joists 15 are installed on top of the joists 14 and are made of elongated steel members having a hat-shaped cross section, for example. The floor joists 15 extend in a direction perpendicular to the joists 14. The joists 15 are provided in multiple rows and are arranged parallel to each other at a predetermined interval. The joists 14 and floor joists 15 are arranged in a lattice pattern in a plan view.

[0018] As shown in Figures 2 to 4, the floor beam 20 is a member that supports the floor material 10 and is erected on the support surface 2. The floor beam 20 comprises a leg 21, a screw member 22, and a support bracket 23. The leg 21 is a portion that is installed on the support surface 2. The support surface 2 is formed, for example, by a floor slab, and the leg 21 is installed on its surface. The leg 21 is a portion that supports the screw member 22 and is formed by bending a metal plate material. The leg 21 comprises a side wall portion 25, a top plate portion 26, and a second wall portion 27. The side wall portion 25 and the top plate portion 26 form a gate-like shape when viewed from the side.

[0019] As shown in Figures 5 and 6, the side wall portions 25 are provided in pairs, each of which is a plate-like portion that rises perpendicularly to the support surface 2. The pair of side wall portions 25, 25 are parallel to each other with a predetermined gap in the front-to-rear direction. The side wall portion 25 has a widened portion 28 at its lower end that widens in the left-to-right direction. The lower end of the side wall portion 25 has a fixing plate portion 29 that widens in the horizontal direction. The fixing plate portion 29 is a portion for fixing the leg portion 21 to the support surface 2 and is placed on the support surface 2 and fastened with a bolt. The fixing plate portion 29 is continuous with the lower end of the side wall portion 25 and is bent at a right angle outward (toward the opposite side from the other side wall portions 25). Specifically, the fixing plate portion 29 that is continuous with the lower end of the front side wall portion 25 bends forward, and the fixing plate portion 29 that is continuous with the lower end of the rear side wall portion 25 bends backward. The fixing plate portion 29 has a width dimension equivalent to that of the widened portion 28.

[0020] The top plate portion 26 is a portion to which the screw member 22 is connected and spans between the upper ends of the pair of side wall portions 25. The top plate portion 26 is continuous with the upper ends of each side wall portion 25, bent at a right angle, and extends horizontally. The top plate portion 26 has a rectangular shape in a plan view, and the side wall portions 25 are connected to both the front and rear sides. A through hole 31 through which the screw member 22 is inserted is formed in the center of the top plate portion 26. A depending lip portion 32 is provided on each of the left and right sides of the top plate portion 26. The depending lip portion 32 is continuous with both the left and right sides of the top plate portion 26 and bent downward. The depending lip portion 32 extends in a direction perpendicular to the top plate portion 26 and the side wall portions 25. The depending dimension of the depending lip portion 32 is a length that allows a bolt hole to be formed or a screw to be inserted.

[0021] The second wall portions 27 are portions for fixing brace members 51 and reinforcing vertical members 55, which will be described later, and extend in a direction perpendicular to the side wall portions 25. The second wall portions 27 are provided on the left and right sides of the side wall portions 25, respectively, and are formed so as to be continuous with the side edges of the side wall portions 25 extending in the vertical direction and bend inward (toward the other side wall portion 25) at a right angle. Specifically, the second wall portions 27 continuous with the left and right side edges of the front side wall portion 25 bend rearward, and the second wall portions 27 continuous with the left and right side edges of the rear side wall portion 25 bend forward. The forward or rearward projection dimension of the second wall portions 27 is a length that allows bolt holes to be formed or screws to be inserted.

[0022] A stopper 33 is provided at the lower end of the leg 21. The stopper 33 prevents the parallel side walls 25, 25 from opening. The stopper 33 has a bottom 34 and walls 35, 35 rising from both the front and rear of the bottom 34, respectively, and is groove-shaped. The stopper 33 is installed between the side walls 25, 25 at the lower end of the leg 21. The bottom 34 rests on the support surface 2, and each wall 35 abuts against each side wall 25 from the inside and is bolted. This stopper 33 prevents the side walls 25 from opening due to the load of the flooring 10 and the load on the floor acting on the leg 21, but the side walls 25 are fixed from the inside by the walls 35, preventing the side walls 25 from opening.

[0023] As shown in Figures 2 to 4, the screw member 22 is a part that supports the support bracket 23, and is supported by the leg portion 21 and extends upward. The screw member 22 is composed of a long rod screw. The length of the screw member 22 is set according to the height of the floor material 10 relative to the support surface 2. In the low floor portion (see Figures 2 to 4), the length of the screw member 22 is small, and in the high floor portion (see Figures 9 and 10), the length of the screw member 22 is large. The lower end of the screw member 22 is inserted into a through hole 31 in the top plate portion 26. Nuts 36 are threaded onto the screw member 22 at the upper and lower parts of the top plate portion 26, respectively, so that the top plate portion 26 is clamped between the nuts 36, 36 and the screw member 22 is fixed to the leg portion 21. The support bracket 23 is attached to the upper end of the screw member 22.

[0024] The support bracket 23 is a member that supports the floor subfloor 12 of the flooring 10. The support bracket 23 has an upper wall portion 37 that is arranged in the same plane as the side wall portion 25 when the legs 21, screw members 22, and support bracket 23 are assembled. The support bracket 23 is configured with a subfloor support bracket 38 and a lower bracket 39.

[0025] The subfloor support bracket 38 supports the joists 14 of the floor subfloor 12 and is located above the lower bracket 39. The subfloor support bracket 38 is made of steel material with a hat-shaped cross section, with the lip portions on both sides of the widthwise direction facing upward and its axial direction perpendicular to the longitudinal direction of the joists 14 in a plan view (see Figures 3 and 4). The length of the subfloor support bracket 38 is equal to or greater than the width of the joists 14 so that the joists 14 can be placed on it (see Figure 4). A through-hole (not shown) is formed in the bottom of the subfloor support bracket 38. The upper end of the screw member 22 is inserted into the through-hole. Nuts 43 are threaded onto the screw members 22 at the top and bottom of the bottom, respectively, to clamp the bottom between the nuts 43, 43, and secure the subfloor support bracket 38 to the screw members 22. A sound-proof rubber sheet is laid on the upper surface of the lip portion of the subfloor support bracket 38. The joists 14 are placed on the soundproof rubber sheet to suppress noise caused by floor vibration. When the base support bracket 38 is installed together with the lower bracket 39, the lower nut 43 is threaded onto the screw member 22 on the underside of the upper plate portion 45 of the lower bracket 39, which will be described later.

[0026] As also shown in Figures 7 and 8, lower metal fitting 39 is a member for fastening brace material 51 (see Figures 2 to 4) and reinforcing vertical member 55 (see Figures 9 and 10), which will be described later, and is provided below base support metal fitting 38. Lower metal fitting 39 is formed by bending a metal plate. Lower metal fitting 39 includes an upper plate portion 45 and a hanging plate portion 46. Upper plate portion 45 is a portion through which screw member 22 is inserted and has a rectangular shape. Upper plate portion 45 is formed with a notch portion 47 through which screw member 22 is inserted. Notch portion 47 is formed extending from one side of rectangular upper plate portion 45 to the center of upper plate portion 45, so that screw member 22 is inserted through the center of upper plate portion 45. Hanging lip portions 48 are provided on both sides of the side from which notch portion 47 begins. The hanging lip portion 48 is formed so as to be continuous with both ends of the side and bend downward at a right angle. The hanging dimension of the hanging lip portion 48 is a length that allows a bolt hole to be formed or a screw to be inserted.

[0027] The hanging plate portions 46 are portions for fixing the brace members 51 and the reinforcing vertical members 55, which will be described later. Three hanging plate portions 46 are formed, and hang down from the three sides of the periphery of the upper plate portion 45, excluding the side where the notch portion 47 begins. The hanging plate portions 46 are continuous with the three sides and bent downward at right angles. At least one of the three hanging plate portions 46 is arranged in the same plane as the side wall portion 25 when the legs 21, the screw members 22, and the support brackets 23 are assembled (see FIGS. 2, 3, and 4). In other words, of the hanging plate portions 46, one hanging plate portion 46 facing the hanging lip portion 48, or two hanging plate portions 46, 46 arranged perpendicular to the hanging lip portion 48 in a plan view, constitutes the upper wall portion 37. The hanging plate portion 46 disposed perpendicular to the upper wall portion 37 is disposed in the same plane as the second wall portion 27 .

[0028] Brace materials 51 are provided between adjacent floor beams 20, 20 as needed. The brace materials 51 are, for example, angle materials with an L-shaped cross section, and are hung between the leg 21 of one floor beam 20 and the lower bracket 39 of the support bracket 23 of the other floor beam 20. FIGS. 2 to 4 show brace materials 51 extending in the front-to-rear direction. Both ends of this brace material 51 are connected to the second wall portion 27 of the front leg 21 and the hanging plate portion 46 of the rear lower bracket 39, respectively. Specifically, the lower end of a vertically oriented surface 52 of the brace material 51 abuts and is bolted across the pair of front and rear second wall portions 27 of the front leg 21, and the upper end of the vertically oriented surface 52 of the brace material 51 abuts and is bolted against the hanging plate portion 46 of the rear lower bracket 39 (the hanging plate portion 46 in the same plane as the second wall portion 27).

[0029] The brace material 51 extending in the left-right direction spans the side wall portion 25 of the leg portion 21 of one floor beam 20 and the hanging plate portion 46 (upper wall portion 37) of the lower fitting 39 of the other floor beam 20, which is in the same plane as the side wall portion 25.

[0030] As shown in Figures 9 and 10, the floor beam 20 may further include a reinforcing vertical member 55 as necessary, for example, in cases where the screw members 22 are long in a high floor section where the height of the floor material 10 relative to the support surface 2 is high (also shown on the left side in Figure 1). The reinforcing vertical member 55 is arranged along the screw members 22 to reinforce the screw members 22. The reinforcing vertical member 55 is, for example, a long steel member with a hat-shaped cross section, and includes a groove portion 58 consisting of a bottom portion 56 and a pair of wall portions 57, 57, and a lip portion 59 that protrudes outward from the end of the groove portion 58 (the end portion on the opening side of the wall portion 57). The lower end of the reinforcing vertical member 55 is fixed by fitting the groove portion 58 into the leg portion 21. Specifically, wall portions 57, 57 of reinforcing vertical member 55 sandwich a pair of second wall portions 27 of leg portion 21, and a bottom portion 56 of reinforcing vertical member 55 abuts against side wall portions 25 of leg portion 21 and is fixed with bolts, screws, or the like (hereinafter sometimes referred to as "bolted, or the like"). An upper end portion of reinforcing vertical member 55 is fixed by having a groove portion 58 fitted into lower fitting 39. Specifically, wall portions 57, 57 of reinforcing vertical member 55 sandwich hanging plate portion 46 of lower fitting 39 from both the left and right sides, and a bottom portion 56 of reinforcing vertical member 55 abuts against the hanging plate portion 46 on the front or rear side of lower fitting 39 and is fixed with bolts, or the like.

[0031] In addition to reinforcing the screw members 22, the reinforcing vertical members 55 also support the brace members 51 and the floor substructure. As shown in FIG. 9, the floor substructure supported by the reinforcing vertical members 55 is, for example, the substructure for the riser 16 (see FIG. 9) at the step. The substructure for the riser 16 consists of a horizontal member 17 and a vertical member 18 that are perpendicular to each other in a side view. The horizontal member 17 abuts against the bottom 56 of the reinforcing vertical member 55 and is fixed thereto by bolts or the like. The riser 16, like the floorboards 11, is made of a hollow resin plate material and is fixed to the vertical members 18 via bolts 13. The upper end of the riser 16 abuts against the underside of the tip of the floorboard 11. The upper end of the vertical member 18 abuts against the underside of the tip of the joist 15 of the floorboard 11 and is connected via a bracket 19.

[0032] As shown in Figure 2, risers 16, cross members 17, and vertical members 18 are also provided at the ends of the low floor section. In the low floor section, reinforcing vertical members 55 are not installed, so the horizontal members 17 abut against the side wall portions 25 of the legs 21 and are fastened with screws. The connection structure of the vertical members 17, cross members 18, and risers 16 is the same as that of the high floor section shown in Figure 9, and the connection structure between the floorboards 11 and risers 16 and the connection structure between the joists 15 and vertical members 18 are also the same as those of the high floor section, so the same reference numerals are used and their explanations are omitted.

[0033] The brace material 51 is suspended between the front and rear floor beams 20. In the raised floor section shown in Figures 9 and 10, it is suspended between a reinforcing vertical member 55 attached to the rear side of the front floor beam 20 and a reinforcing vertical member 55 attached to the front side of the rear floor beam 20. Specifically, as shown in Figure 9, the lower end of the brace material 51 abuts against the wall portion 57 of the reinforcing vertical member 55 attached to the rear side of the front floor beam 20 and is fixed thereto with bolts or the like, and the upper end of the brace material 51 abuts against the wall portion 57 of the reinforcing vertical member 55 attached to the front side of the rear floor beam 20 and is fastened thereto with screws.

[0034] The following describes the effects of the floor structure 1 configured as described above. According to the floor structure 1 of this embodiment, the side wall portions 25 of the legs 21 of the floor beams 20 and the upper wall portions 37 (hanging plate portions 46) of the lower fittings 39 of the support fittings 23 are both vertical and flat, and are arranged in the same plane, so the brace materials 51 can be easily installed and connected by simple construction such as bolting, while also ensuring the necessary connection strength.

[0035] Since the leg 21 has a second wall 27 that extends in a direction perpendicular to the side wall 25, the brace material 51 can be easily connected to the leg 21 in either the X-axis direction or the Y-axis direction. This allows the brace material 51 to be installed efficiently, resulting in a great reinforcing effect.

[0036] Floor beam 20 also includes support bracket 23, which is composed of base support bracket 38 and lower bracket 39. Lower bracket 39 includes rectangular upper plate 45 and three hanging plates 46 hanging from each of the three sides of upper plate 45, with one of hanging plates 46 located in the same plane as side wall 25. Therefore, brace material 51 can be placed between side wall 25 and hanging plate 46, which are located in the same plane. Furthermore, because the three hanging plates 46 are located perpendicular to each other, brace material 51 can be easily connected to lower bracket 39 in either the X-axis direction or the Y-axis direction.

[0037] Furthermore, by bridging the reinforcing vertical members 55 between the legs 21 and the support brackets 23, the reinforcing vertical members 55 can be positioned along the screw members 22. This makes it possible to accommodate cases where the distance between the support surface 2 of a raised floor or the like and the floor material 10 is large and the screw members 22 are long. The reinforcing vertical members 55 have a hat-shaped cross section, which provides high strength and enables efficient reinforcement, and also allows the brace members 51 to be fixed in various directions to the bottom portion 56 or wall portion 57.

[0038] Furthermore, if a floor base is installed on the reinforcing vertical members 55, it will be possible to support vertical members such as risers 16. Furthermore, since the reinforcing vertical members 55 have the same cross-sectional shape as the joists 14 and 15, it is possible to standardize the components, thereby reducing the number of parts to be managed.

[0039] Next, a modified leg portion 121 will be described with reference to Figures 11 and 12. The leg portion 121 includes a side wall portion 125, a top plate portion 126, and a second wall portion 127. The side wall portion 125 and the top plate portion 126 form a gate-like shape in a side view of the leg portion 121.

[0040] As in the previous embodiment, the side wall portions 125 are plate-shaped portions that rise perpendicularly to the support surface, and a pair of side wall portions 125 are provided parallel to each other. The upper end of the side wall portion 125 has chamfered corners, and the width dimension decreases toward the top. The lower end of the side wall portion 125 has the same width dimension as the middle portion. A fixing plate portion 129 that extends horizontally is provided at the lower end of the side wall portion 125. The fixing plate portion 129 is placed on the support surface and fixed by bolts or the like. The fixing plate portion 129 is formed wider than the lower end of the side wall portion 125, continues to the lower end of the side wall portion 25, and is formed by bending at a right angle toward the outside (the side opposite the other side wall portions 25).

[0041] The top plate portion 126 is a portion to which the screw member 22 is connected and spans between the upper ends of the pair of side wall portions 125. The top plate portion 126 includes an upper plate portion 126a, a vertical plate portion 126b, and a protruding plate portion 126c, and has a hat-shaped cross section. The upper plate portion 126a is continuous with the upper ends of each side wall portion 125, bent at a right angle, and extends horizontally. The upper plate portion 126a has a rectangular shape in plan view. A through hole 31 through which the screw member 22 is inserted is formed in the center of the upper plate portion 126. The vertical plate portions 126b are continuous with each of the left and right ends of the top plate portion 126a and are formed by bending downward. The protruding plate portions 126c are continuous with the lower ends of each vertical plate portion 126b, bent outward, and formed by protruding.

[0042] The second wall portion 127 extends in a direction perpendicular to the side wall portion 125, similar to the previous embodiment. The second wall portion 127 differs from the previous embodiment in that the upper and lower corners are chamfered and inclined. The other configurations are the same as those of the previous embodiment.

[0043] As in the previous embodiment, a stopper member 133 is provided at the lower end of the leg 121. The stopper member 133 has a bottom 134 and wall portions 135, 135 rising from both the front and rear sides of the bottom 134, and is groove-shaped. The width of the bottom 134 and the wall portion 135 is the same as that of the side wall portion 125 and is smaller than the width of the fixing plate portion 129.

[0044] Even when the modified leg portion 121 is used, the screw member 22 and the support bracket 23 are the same as those in the above embodiment, so the same reference numerals are used and the description thereof will be omitted. According to the leg portion 121, the top plate portion 126 has a hat-shaped cross section, which increases rigidity.

[0045] Although the embodiments for carrying out the present invention have been described above, the present invention is not limited to the above-described embodiments, and appropriate design changes can be made to the materials, shapes, sizes, etc., without departing from the spirit of the present invention. For example, in the above-described embodiments, the distance between the support surface 2 and the floor material 10 is changed by changing the length of the screw member 22, but this is not limiting. The height of the leg 21 may also be changed.

[0046] Furthermore, in the embodiment described above, lower fitting 39 is configured to include upper plate portion 45, three depending plate portions 46, and depending lip portion 48 divided by notch portion 47, but the present invention is not limited to this. For example, the height dimension of depending lip portion 48 may be increased to be the same as that of depending plate portion 46.

[0047] Furthermore, in the above embodiment, the reinforcing longitudinal members 55 have a hat-shaped cross section, but this is not limited to this, and they may have other shapes such as a groove-shaped cross section or an L-shaped cross section. [Explanation of symbols]

[0048] 1 floor structure 2 Support surface 10 Flooring 20 floor bundle 21 Legs 22 Screw member 23 Support bracket 25 Side wall 26 Top plate 27 Second wall 38 Base support bracket 39 Lower bracket 45 Upper plate 46 Hanging plate part 51 Brace material 55 Reinforcing vertical member

Claims

1. A floor structure comprising floor materials laid at intervals in the height direction above a support surface, and floor beams erected on the support surface to support the floor materials, The floor beam is configured to include a leg portion installed on the support surface, a screw member supported by the leg portion and extending upward, and a support bracket attached to the upper end of the screw member and supporting the base of the floor material, the leg portion has a side wall portion that stands vertically on the support surface and a top plate portion to which the screw member is connected, The support bracket has an upper wall portion that is disposed in the same plane as the side wall portion. A floor structure characterized by:

2. The leg portion further includes a second wall portion extending in a direction perpendicular to the side wall portion.

2. The floor structure according to claim 1.

3. The support further includes a reinforcing vertical member stretched between the leg and the support bracket.

2. The floor structure according to claim 1.

4. The support bracket is composed of a base support bracket on which the base of the floor material is placed and a lower bracket provided below the base support bracket, The lower fitting includes a rectangular upper plate portion through which the screw member is inserted, and three hanging plate portions hanging down from three sides of the upper plate portion, and the hanging plate portions form the upper wall portion.

2. The floor structure according to claim 1.

5. A floor beam erected on a support surface to support flooring materials laid at intervals in the height direction above the support surface, The flooring is provided with a leg portion that is installed on the support surface, a screw member that is supported by the leg portion and extends upward, and a support metal fitting that is attached to the upper end of the screw member and supports the base of the flooring material, the leg portion has a pair of side wall portions that stand vertically on the support surface, and a top plate portion that is bridged between the side wall portions and into which the screw member is threadedly engaged; The support bracket has an upper wall portion that is disposed in the same plane as the side wall portion. A floor beam characterized by:

Images