JP7290853B2 - Underfloor material, floor forming member, floor structure and floor structure construction method - Google Patents

Description

The present invention relates to an underfloor material, a floor forming member, a floor structure, and a floor structure construction method.

In building facilities such as condominiums and indoor sports facilities such as gymnasiums and multi-purpose halls, subfloor materials are installed on multiple support legs placed at predetermined intervals on the floor slab. A double-floor structure is adopted in which floor finishing materials are applied by hammering or sticking. The double-floor structure is excellent in forming and securing spaces for piping and wiring in building facilities, and is therefore actively employed in the design and construction of building facilities.

As such a double floor structure, for example, in Patent Document 1, underfloor materials are laid on the upper surfaces of spacers provided on floor girders and on the upper surfaces of small floor girders attached to both ends of the floor girders. A floor structure is disclosed in which a floor covering is laid on a base material. In this floor structure, a groove-shaped recess is formed over the entire length of one edge in the width direction of the floor finishing material, and a protrusion that fits into the recess is formed over the entire length of the opposite edge. formed throughout. When laying the floor finishing materials, one of the two adjacent floor finishing materials is inserted into the concave portion of the other floor finishing material to fit them together. After mating, the floor finishing material is fixed to the underfloor material by gluing or nailing.

JP 2018-87473 A

In the conventional floor structure, after the construction of the subfloor material, before laying the floor finishing material on the subfloor material, the subfloor material is placed in a predetermined place so that the joints and height of the floor finishing material do not shift. This requires a lot of confirmation work, such as whether screws are inserted into the floor and whether the height of the underfloor material is approximately the same, which is complicated. Therefore, when the floor finishing material is attached to the underfloor material at the construction site, the installation work of the floor finishing material is troublesome and takes a long time. Further, depending on the worker who constructs the subfloor material or the floor finishing material, the floor surface after construction of the floor finishing material may vary, or the construction time of the floor structure may vary.

Therefore, one aspect of the present invention has been made in view of the above, and an object thereof is to provide an underfloor material that is excellent in workability and that allows easy construction of a floor structure having a flat floor surface. do.

One aspect of the underfloor material according to the embodiment of the present invention is an underfloor material having an outer shape in which a plurality of rectangular members are shifted and overlapped in plan view, and which is used in a floor structure arranged on a floor base. , one of a first short end face, a second short end face facing the first short end face, and a longitudinal end face adjacent to the first short end face; and a second longitudinal end face facing the end face, wherein a convex solid portion is formed on the first short end face and the first longitudinal end face, and the second short end face and the second longitudinal end face is formed with a concave herringbone.

According to the embodiment of the present invention, it is possible to easily construct a floor structure in which a flat floor surface is formed while being excellent in workability.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows simply the structure of the double-floor structure to which the underfloor material which concerns on one Embodiment was applied. It is a perspective view showing simply the composition of the floor formation member concerning one embodiment. FIG. 10 is another perspective view simply showing the configuration of the floor forming member according to one embodiment. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows simply the structure of the underfloor material which concerns on one Embodiment. FIG. 3 is another perspective view simply showing the configuration of the underfloor material according to one embodiment. FIG. 5 is a sectional view taken along line I-I of FIG. 4; FIG. 5 is a cross-sectional view taken along the line II-II of FIG. 4; It is a top view of the floor formation member concerning one embodiment. 3 is a cross-sectional view taken along line III-III of FIG. 2; FIG. FIG. 10 is a sectional view along IV-IV in FIG. 1 is an exploded perspective view of a floor forming member according to one embodiment; FIG. It is a figure which shows the other structure of the underfloor material which concerns on one Embodiment. It is a figure which shows the other structure of the underfloor material which concerns on one Embodiment. It is a figure explaining 1 process of the construction method of a floor. It is a figure explaining 1 process of the construction method of a floor. It is a figure explaining 1 process of the construction method of a floor. FIG. 5 is a plan view showing another example of the configuration of the floor forming member; It is a top view which shows an example which has arrange|positioned several floor forming members. FIG. 5 is a plan view showing another example of the configuration of the floor forming member; It is a top view which shows an example which has arrange|positioned several floor forming members. FIG. 5 is a plan view showing another example of the configuration of the floor forming member; It is a top view which shows an example which has arrange|positioned several floor forming members.

EMBODIMENT OF THE INVENTION Hereinafter, the form (henceforth embodiment) for implementing this invention is demonstrated in detail. In addition, in order to facilitate understanding of the description, the same components are denoted by the same reference numerals in each drawing, and overlapping descriptions are omitted. Also, the scale of each member in the drawings may differ from the actual scale.

In this specification, a three-dimensional orthogonal coordinate system with three axial directions (X-axis direction, Y-axis direction, Z-axis direction) is used, and the lateral direction of the floor material is the X-axis direction, and the longitudinal direction is the Y-axis direction, Let the height direction (thickness direction) be the Z-axis direction. The direction from the bottom to the top of the floor material is the +Z-axis direction, and the opposite direction is the -Z-axis direction. In the following description, the +Z-axis direction may be referred to as "up" and the -Z-axis direction may be referred to as "down." When representing the end face of the floor material, the lateral direction of the floor material is expressed as X1 and X2 from the -X axis direction to the +X axis direction, and the longitudinal direction of the floor material is expressed as Y1 and Y2 from the -Y axis direction to the +Y axis direction. , and the thickness direction of the floor material is represented by Z1, Z2, and Z3 from the −Z axis direction to the +Z axis direction.

<Double floor structure>
A double floor structure to which the underfloor material according to one embodiment is applied will be described. FIG. 1 is a perspective view schematically showing the configuration of a double floor structure to which an underfloor material according to one embodiment is applied. As shown in FIG. 1, a double floor structure (hereinafter simply referred to as "floor structure") 1 has a plurality of floor forming members 10, and the longitudinal end faces and short end faces of adjacent floor forming members 10 are A floor surface is formed by connecting and arranging the main surfaces of a plurality of floor forming members 10 adjacent to each other. The short end surfaces of adjacent floor forming members 10 are arranged so as to match each other, and the longitudinal end surfaces of adjacent floor forming members 10 are arranged with a shift of about 1/2 of the length of the floor forming member 10 in the longitudinal direction. ing. The floor structure 1 is erected on a floor slab (floor base) 11 which is a base surface, and has an underfloor space between the floor slab 11 and the floor forming member 10 . The configuration of the floor forming member 10 will be described below.

[Floor forming member]
FIG. 2 is a perspective view simply showing the configuration of the floor forming member 10 according to one embodiment, and FIG. 3 is another perspective view simply showing the configuration of the floor forming member 10 according to one embodiment. As shown in FIGS. 2 and 3 , the floor forming member 10 has a floor material 20 and support legs 30 that support the floor material 20 on the floor slab 11 . The floor material 20 and the support legs 30 that constitute the floor forming member 10 will be described.

[Floor material]
As shown in FIGS. 2 and 3 , the flooring 20 is provided on support legs 30 . As shown in FIG. 1, the flooring materials 20 are arranged so that the short end surfaces of the adjacent flooring materials 20 are aligned with each other, and the long end surfaces of the adjacent flooring materials 20 are shifted from each other.

As shown in FIGS. 2 and 3, the floor material 20 includes an underfloor material (underfloor panel) 21 and a floor finishing material (flooring material) 22. A material 21 and a floor finishing material 22 are laminated in this order.

(underfloor material)
FIG. 4 is a perspective view simply showing the configuration of the underfloor material 21 according to one embodiment, and FIG. 5 is another perspective view simply showing the configuration of the underfloor material 21 according to one embodiment. 6 is a sectional view taken along line II in FIG. 4, and FIG. 7 is a sectional view taken along line II-II in FIG. As shown in FIGS. 4 to 7, the underfloor member 21 is constructed by stacking three rectangular members (an upper rectangular member, a central rectangular member, and a lower rectangular member). It is a plate-shaped member having an outer shape in which the members overlap in the lateral direction (X-axis direction) and the longitudinal direction (Y-axis direction).

The underfloor member 21 may be a plate-shaped member obtained by processing one plate-shaped member from three rectangular members (that is, the three rectangular members are integrated as a whole). The underfloor material 21 is a state in which three rectangular members are stacked while being shifted in the lateral direction (X-axis direction) and the longitudinal direction (Y-axis direction), and the overlapping surfaces of the respective rectangular members are coated with an adhesive. A plate-like member configured by joining with a fixing means such as the above may also be used. In the case where the underfloor material 21 is a plate-shaped member processed from a single plate-shaped member, the corresponding members are placed on the upper side in the same manner as in the case where three rectangular members are stacked and joined together. They are referred to as the rectangular member, the central rectangular member, and the lower rectangular member. Further, in the following description, the case where the underfloor member 21 is a plate-like member obtained by processing one plate-like member will be described.

The underfloor material 21 is a plate material obtained by processing a flat plate material as described above, and is formed of a wood-based material, a composite material thereof, or the like. Materials for forming the underfloor material 21 include softwood or hardwood veneers, softwood or hardwood plywood, plywood using both softwood veneers and hardwood veneers, fiberboard, and orientation. Oriented Strand Board (OSB), particle board, silica board, slate board and the like are used. As the fiberboard, for example, a high density fiberboard (HDF), a medium density fiberboard (MDF), or the like can be used. Further, the underfloor material 21 may be made of a flat plate material that can be processed into a predetermined shape as described above, and may be made of synthetic resin, metal, ceramics, or the like.

As shown in FIGS. 4 and 5, the underfloor member 21 has a first short end face 21a on the +Y-axis direction side and a second short end face 21a on the opposite direction (−Y-axis direction) to the first short end face 21a. It has a hand end face 21b, a first longitudinal end face 21c on the -X-axis direction side, and a second longitudinal end face 21d on the opposite direction (+Y-axis direction) to the first longitudinal end face 21c side. These end faces each have three end faces at different positions in plan view.

As shown in FIGS. 6 and 7, the first short end surface 21a has 21a _Y2Z1 , 21a _Y2Z2 , and 21a _Y2Z3 from the support leg 30 side toward the floor surface side. The second short end surface 21b has 21b _Y1Z1 , 21b _Y1Z2 , and 21b _Y1Z3 from the support leg 30 side toward the floor surface side. The first longitudinal end surface 21c has 21c _X1Z1 , 21c _X1Z2 , and 21c _X1Z3 from the support leg 30 side toward the floor surface side. The second longitudinal end surface 21d has 21d _X2Z1 , 21d _X2Z2 , and 21d _X2Z3 from the support leg 30 side toward the floor surface side.

The underfloor material 21 has convex male and female portions 211 on the first short end face 21a and the first longitudinal end face 21c, and concave female joint portions on the second short end face 21b and the second longitudinal end face 21d. 212.

Assume that the solid portion 211 is formed by laminating three rectangular members (an upper rectangular member, a central rectangular member, and a lower rectangular member) of the underfloor member 21 . At this time, the solid portion 211 is such that, in a plan view, the end surfaces 21a _Y2Z2 and 21c _X1Z2 of the central rectangular member overlap the end surfaces 21a _Y2Z3 and 21c _X1Z3 of the upper rectangular member and the end surfaces 21a _Y2Z1 and 21c _X1Z1 of the lower rectangular member. It is formed by arranging it so as to be outside of.

That is, as shown in FIGS. 5 to 7, the solid portion 211 is formed as a protrusion on the first short end surface 21a and the first longitudinal end surface 21c of the underfloor material 21. It is formed over the entire length of one longitudinal end face 21c. The solid portion 211 is formed along the lateral direction (X-axis direction) of the underfloor member 21 on the first short end surface 21a, and is formed along the longitudinal direction (Y-axis direction) of the underfloor member 21 on the first longitudinal end surface 21c. formed along the

It is assumed that the female portion 212 is formed by laminating three rectangular members (an upper rectangular member, a central rectangular member, and a lower rectangular member) of the underfloor member 21 . At this time, in the female portion 212, in plan view, the end faces _21bY1Z2 and _{21dX2Z2 of} the central rectangular member overlap the end faces _21bY1Z3 and _21dX2Z3 of the upper rectangular member and the end faces 21bY1Z1 and _21dX2Z1 of the lower rectangular member. It is formed by arranging so as to be inner than.

That is, as shown in FIGS. 4, 6 and 7, the female portion 212 is formed in a groove shape on the second short end surface 21b and the second longitudinal end surface 21d of the underfloor material 21, It is formed over the entire length of the hand end surface 21b and the second longitudinal end surface 21d. The female portion 212 is formed along the lateral direction (X-axis direction) of the underfloor member 21 on the second short end surface 21b, and is formed along the longitudinal direction (Y-axis direction) of the underfloor member 21 on the second longitudinal end surface 21d. formed along the

The male portion 211 is formed such that the end surfaces 21a _Y2Z1 and 21c _X1Z1 of the lower rectangular member forming the male portion 211 are located inside the end surfaces 21a _Y2Z3 and 21c _X1Z3 of the upper rectangular member. .

That is, the end face 21a _Y2Z1 is formed along the short direction (X-axis direction) of the underfloor member 21 so as to be located inside the end face 21a _Y2Z3 on the first short end face 21a in plan view. there is The end face _21cX1Z1 is formed along the longitudinal direction (Y-axis direction) of the underfloor member 21 so as to be located inside the end face _21cX1Z3 on the first longitudinal end face 21c in plan view.

The female portion 212 is formed so that the end surfaces 21b _Y1Z1 and 21d _X2Z1 of the lower rectangular member forming the female portion 212 are located outside the end surfaces 21b _Y1Z3 and 21d _X2Z3 of the upper rectangular member. .

That is, the end face 21b _Y1Z1 is formed along the short direction of the underfloor member 21 so as to be located outside the end face 21b _Y1Z3 on the second short end face 21b in plan view. The end face _21dX2Z1 is formed along the longitudinal direction of the underfloor member 21 so as to be located outside the end face _21dX2Z3 on the second longitudinal end face 21d.

As shown in FIGS. 4 and 6, the underfloor material 21 has a through hole 23 in its lower rectangular member, into which the upper end of the adjustment bolt 32 of the support leg 30 is inserted. The through hole 23 is provided at the position of the end surface 21b _Y1Z3 , which is the position of the joint of the second short end surface in plan view. The through-hole 23 penetrates the lower rectangular member of the underfloor material 21 , and the inner diameter of the through-hole 23 is formed larger than the outer diameter of the adjustment bolt 32 of the support leg 30 . The underfloor material 21 is fixed to the support leg 30 by inserting the upper ends of the adjustment bolts 32 into the through holes 23 (see FIG. 6) of the underfloor material 21 .

Each end face (first short end face 21a, second short end face 21b, first longitudinal end face 21c, and second longitudinal end face 21d) of the underfloor material 21 is chamfered at an arbitrary corner. Alternatively, it may be processed into an R shape.

As shown in FIGS. 6 and 7, the length L1 from the end surfaces 21b _Y1Z2 and 21d _X2Z2 of the central rectangular member forming the female portion 212 to the end surfaces 21b _Y1Z3 and 21d _X2Z3 of the upper rectangular member is the male portion. It is preferable that the length from the end faces 21a _Y2Z3 , 21c _X1Z3 of the upper rectangular member forming 211 to the end faces 21a _Y2Z2 , 21c _X1Z2 of the central rectangular member is not less than L2. The length L1 represents the depth of the female portion 212, and the length L2 represents the amount of protrusion of the male portion 211. As shown in FIG. If the depth of the female portion 212 is greater than or equal to the amount of protrusion of the male portion 211, the end faces 21a _Y2Z2 and 21c _X1Z2 of the central rectangular member of the male portion 211 of one flooring 20 will be the female portion of the other flooring 20. Before contacting the end faces 21b _Y1Z2 and 21d _X2Z2 of the central rectangular member of the portion 212, the end faces 21b _Y1Z3 and 21d _X2Z3 of the upper rectangular member of the male portion 211 of one floor member 20 meet the female of the other floor member 20. The end faces 21a _Y2Z3 and 21c _X1Z3 of the upper rectangular member of the real portion 212 are in contact with each other. At this time, the end surfaces 21b _{Y1Z2 and 21d X2Z2} of the central rectangular members of the female portion 212 of one flooring ₂₀ and the end surfaces 21a _Y2Z2 and 21c _X1Z2 of the central rectangular members of the male portion 211 of the adjacent flooring 20 A clearance space S1 is formed therebetween. Therefore, if the length L1 is equal to or longer than the length L2, even if a plurality of flooring materials 20 are arranged adjacent to each other, there will be gaps (gaps) between the short end surfaces and the long end surfaces of the flooring materials 20. unlikely to occur.

As shown in FIGS. 6 and 7, the length L3 from the end faces 21a _Y2Z1 and 21c _X1Z1 of the lower rectangular member forming the male portion 211 to the end faces 21a _Y2Z2 and 21c _X1Z2 of the central rectangular member is It is preferable that the length from the end faces 21b _Y1Z1 and 21d _X2Z1 of the central rectangular member forming the portion 212 to the end faces 21b _Y1Z1 and 21d _X2Z1 of the lower rectangular member be equal to or longer than L4. If the length L3 is equal to or greater than the length L4, the female joint portion 212 of the other floor member 20 is formed on the end surfaces 21a _Y2Z1 and 21c _X1Z1 of the lower rectangular member forming the male joint portion 211 of the one floor member 20. Before the end faces 21b _Y1Z1 and 21d _X2Z1 of the lower rectangular member contacting each other, the end faces 21a _Y2Z3 and 21c _X1Z3 of the upper rectangular member forming the solid portion 211 of one floor member 20 contact the other floor member 20. The end faces 21b _Y1Z3 , 21d _X2Z3 of the upper rectangular member forming the female portion 212 are in contact. At this time, the end surfaces 21b _Y1Z1 and 21d _X2Z1 of the lower rectangular members forming the female portion 212 of one flooring 20 and the end surfaces of the lower rectangular members forming the male portion 211 of the adjacent flooring 20 A clearance space S2 is formed between 21a _Y2Z1 and 21c _X1Z1 . Therefore, even if a plurality of flooring materials 20 are arranged adjacent to each other, gaps are less likely to occur between the short end surfaces and the long end surfaces of the flooring materials 20 .

As shown in FIGS. 6 and 7, the thickness H2 of the lower rectangular member of the female portion 212 is preferably 30% to 60%, more preferably 40% to 50%, of the thickness H1 of the subfloor material 21. % is more preferable. If the thickness H2 is within the above range, the lower rectangular member of the underfloor material 21 has sufficient strength to withstand the impact, and the height of the upper end of the adjustment bolt 32 of the support leg 30 can be freely adjusted. becomes higher.

The thickness H1 of the underfloor material 21 can be appropriately designed, and the lower limit value of the thickness H1 of the underfloor material 21 is preferably 30 mm or more, more preferably 40 mm or more, and even more preferably 50 mm or more. If the thickness H1 of the underfloor material 21 is 30 mm or more, the male portion 211 and the female portion 212 can each secure a sufficient thickness at each end face, and the strength of the underfloor material 21 is sufficient. Therefore, the underfloor material 21 is less likely to be damaged or bent when receiving an impact. Moreover, the upper limit of the thickness H1 of the underfloor material 21 may be 100 mm or less. If the thickness H1 of the underfloor material 21 is 100 mm, it is possible to prevent the impact absorption performance of the underfloor material 21 from being impaired.

The size of the main surface 213 of the underfloor material 21 is not particularly limited, and can be appropriately changed according to the installation situation such as the installation location. For example, the underfloor material 21 can be a plate material having a main surface 213 with a short side of 200 mm to 400 mm and a long side of 900 mm to 3600 mm. The short sides and long sides of the underfloor material 21 are appropriately designed based on the ease of construction, the ease of taking the dimensions of the base material, and the like.

The underfloor material 21 is fixed to the base 34 (see FIG. 11) by screws from the underside of the underfloor material 21 so that it can be attached to and detached from the pedestal 34 (see FIG. 11) of the support leg 30 .

(Floor finishing material)
As shown in FIGS. 2 and 3 , the floor finishing material 22 is laid on the main surface 213 of the underfloor material 21 . FIG. 8 is a plan view of the floor forming member 10 according to one embodiment. As shown in FIGS. 2, 3 and 8, the lengths of the short end faces 22a, 22b and the long end faces 22c, 22d of the floor covering material 22 are the same as the first short end face 21a and the second short end face 21a of the underfloor material 21. It has a length equal to the lengths of the hand end surface 21b, the first longitudinal end surface 21c, and the second longitudinal end surface 21d. The floor finishing material 22 is formed to have substantially the same size as the main surface 213 of the underfloor material 21 in plan view.

The floor finishing material 22 is integrated with the main surface 213 (see FIG. 4) of the underfloor material 21 by being attached with an adhesive, an adhesive, or the like.

As the adhesive, it is possible to use a general adhesive or the like that is used for construction of floor finishing materials or the like, and it is possible to use a modified silicone adhesive, a urethane adhesive, an epoxy adhesive, or the like.

As the adhesive, it is possible to use a general adhesive, double-sided tape, etc., which are used for construction of floor finishing materials, etc. For example, rubber-based, latex resin-based, rubber-latex resin-based, acrylic resin-based, or acrylic resin-based emulsion. An adhesive such as type is used.

Examples of the floor finishing material 22 include soft finishing materials such as sheet materials made of synthetic resin or the like, flooring materials, wooden floors, floor tiles, cork materials, tatami mats, and carpets. The floor surface is finished by providing the floor finishing material 22 on the main surface 213 (see FIG. 3 etc.) of the underfloor material 21 .

As shown in FIG. 8, the short end faces 22a, 22b and the long end faces 22c, 22d of the floor covering material 22 are the first short end face 21a, the second short end face 21b and the first longitudinal end face 21c of the underfloor material 21. , and the length of the second longitudinal end surface 21d. The lengths of the short end faces 22a, 22b and the long end faces 22c, 22d are the first short end face 21a, the second short end face 21b, the first longitudinal end face 21c, and the second longitudinal end face 21d of the underfloor material 21. It is sufficient if the length is approximately equal to the length of each.

9 is a sectional view taken along line III-III in FIG. 2, and FIG. 10 is a sectional view taken along line IV-IV in FIG. As shown in FIGS. 9 and 10, the thickness H3 of the floor finishing material 22 can be appropriately designed according to the thickness H1 of the underfloor material 21 and the like. It is preferably 30%, more preferably 10% to 20%. If the thickness H3 of the floor finishing material 22 is within the range of 5% to 30% of the thickness H1 of the underfloor material 21, the floor finishing material 22 does not become too hard and can sufficiently exhibit its shock absorbing performance. , the burden on the knees of pedestrians can be reduced. Specifically, the thickness H3 of the floor finishing material 22 is preferably, for example, 3 mm to 6 mm.

[Support leg]
As shown in FIG. 2 , the support legs 30 are erected on the floor slab 11 . As shown in FIGS. 8 and 9, the support leg 30 is formed on the lower side of the underfloor member 21 on the side of the second short end surface 21b on which the female portion 212 is formed in plan view of the floor member 20. It is fixed to a rectangular member. The support leg 30 is provided so as to be positioned substantially at the center of the joint of the second short end surface 21 b of the underfloor material 21 .

FIG. 11 is an exploded perspective view of the floor forming member 10 according to one embodiment. As shown in FIG. 11, the support leg 30 includes a cushion rubber (anti-vibration rubber) 31 installed on the floor slab 11, a support bolt (adjustment bolt) 32 erected rotatably on the anti-vibration rubber 31, An adjusting nut 33 is screwed onto the upper end of the adjusting bolt 32 , and a rectangular pedestal 34 is fixed to the adjusting nut 33 and supported by the adjusting bolt 32 at the upper end (inside the room) of the adjusting bolt 32 .

The anti-vibration rubber 31 is a member formed in a cylindrical shape, and has a metal fitting female screw portion 31a at the upper end. The anti-vibration rubber 31 is made of an elastic material such as rubber or synthetic resin.

The adjustment bolt 32 is a metal screw member having male threads formed on the outer peripheral surfaces of both ends thereof, and has a male threaded portion 32a at its lower end and a male threaded portion 32b at its upper end. As shown in FIG. 11, the adjusting bolt 32 has a male threaded portion 32a at its lower end screwed into a female threaded portion 31a provided at the upper end of the anti-vibration rubber 31, and a male threaded portion 32b at its upper end. is screwed into the female screw portion 33a of the . By screwing the male threaded portion 32 a of the adjusting bolt 32 into the female threaded portion 31 a of the rubber vibration isolator 31 , the adjustment bolt 32 is rotatably erected on the rubber vibration isolator 31 .

The adjustment bolt 32 has a minus groove 32c on its upper end surface. By inserting the tip of a rotating tool such as a screwdriver into the minus groove 32c and rotating it, the adjustment bolt 32 rotates and moves up and down.

The adjusting nut 33 is made of a metal member and has a female threaded portion 33a and an annular collar portion 33b provided on the lower peripheral edge thereof. The female threaded portion 33a is formed in a cylindrical shape and has a female thread formed therein. The adjusting nut 33 is screwed with the adjusting bolt 32 in a state where the female threaded portion 33a is fitted into the insertion hole 34a from the lower surface side of the pedestal 34 .

The pedestal 34 is a rectangular plate-like member made of metal. The pedestal 34 has an insertion hole 34a in its central portion. A male threaded portion 32 b at the upper end of the adjusting bolt 32 is screwed into a female threaded portion 33 a of an adjusting nut 33 provided on the base 34 . The pedestal 34 is attached to the top of the adjustment bolt 32 by screwing the male threaded portion 32b on the upper end side into the female threaded portion 33a of the adjustment nut 33 provided on the inner peripheral surface of the through hole of the pedestal 34 . By providing a pedestal 34 on the top of the adjustment bolt 32 , the flooring 20 is attached to the adjustment bolt 32 in a state in which the receiving area of the upper end surface (support surface) of the adjustment bolt 32 is increased.

An example of a method of assembling the support leg 30 will be described. First, the female threaded portion 31 a of the rubber vibration isolator 31 is screwed with the male threaded portion 32 a at the lower end of the adjusting bolt 32 , and the adjusting bolt 32 is attached onto the rubber vibration isolator 31 . The tip of a turning tool such as a screwdriver is fitted into the minus groove 32c of the upper end surface of the adjustment bolt 32 to rotate the adjustment bolt 32, thereby moving the adjustment bolt 32 up and down. Fixed position can be adjusted. Next, the pedestal 34 is installed on the adjusting nut 33 by fitting the female threaded portion 33a of the adjusting nut 33 into the insertion hole 34a of the pedestal 34 and bringing the ring-shaped collar portion 33b into contact with the periphery of the insertion hole 34a. Next, the female threaded portion 33a of the adjustment nut 33 attached to the pedestal 34 is screwed into the male threaded portion 32b at the upper end of the adjustment bolt 32 . Thereby, the support leg 30 is assembled. The height of the pedestal 34 is adjusted by rotating the adjustment bolt 32 to raise and lower the adjustment bolt 32 and adjusting the screwing position of the adjustment bolt 32 with the internal thread portion 33a.

<Wall side structure of floor forming member>
When the floor forming member 10 is installed near the wall of building equipment, the male and female portions 211 and 212 may not be formed on the short end surfaces or the long end surfaces that come into contact with the wall surface. That is, the floor forming member 10 has the male and female portion 211 or the female portion 212 formed on one of the first short end surface 21a and the second short end surface 21b, and the male and female portion 211 or the female portion on the other. Either the shank 212 is formed or neither the male shank 211 nor the female shank 212 is formed. A male portion 211 or a female portion 212 is formed on one of the first longitudinal end surface 21c and the second longitudinal end surface 21d, and neither the male portion 211 nor the female portion 212 is formed on the other.

When the floor forming member 10 is provided near the wall of the building equipment, the floor forming member 10 provided near the wall of the building equipment has a male portion 211 and a female portion on the first short end face 21a or the second longitudinal end face 21d. 212. For example, as shown in FIG. 12, the floor forming member 10 provided at the corner of the wall of the building facility has neither the male portion 211 nor the female portion 212 formed on the first short end surface 21a. A female portion 212 is formed on the two short end faces 21b. The floor forming member 10 forms male and female portions 211 and 212 on the first longitudinal end surface 21c and the second longitudinal end surface 21d.

As shown in FIG. 13, the other floor forming member 10 provided near the wall of the building equipment has a male and female portion 211 formed on the first short end face 21a and a male and female portion 211 on the second short end face 21b. and the herringbone 212 are not formed. The floor forming member 10 forms male and female portions 211 and 212 on the first longitudinal end surface 21c and the second longitudinal end surface 21d.

The floor forming member 10 provided at the corner near the wall of building equipment has a male portion 211 or a female portion 212 formed on one of the first short end surface 21a and the second short end surface 21b, and a male portion 212 on the other. Neither the real portion 211 nor the female real portion 212 is formed. The floor forming member 10 has a male portion 211 or a female portion 212 on one of the first longitudinal end surface 21c and the second longitudinal end surface 21d, and either the male portion 211 or the female portion 212 on the other. does not form either.

The floor forming member 10 provided along the wall surface of the building equipment has a male and female portion 211 or a female portion 212 formed on one of the first short end surface 21a and the second short end surface 21b, and a male and female portion 212 on the other. A portion 211 or female portion 212 is formed. The floor forming member 10 has a male portion 211 or a female portion 212 on one of the first longitudinal end surface 21c and the second longitudinal end surface 21d, and either the male portion 211 or the female portion 212 on the other. does not form either.

<Floor construction method>
Next, a construction method for the floor structure 1 will be described. When constructing the floor structure 1, first, a plurality of floor materials 20 integrated with the floor finishing material 22 with an adhesive or the like are prepared on the main surface 213 (see FIG. 4 etc.) side of the underfloor material 21 . On the other hand, the male threaded portion 32a at the lower end of the adjusting bolt 32 is screwed into the female threaded portion 31a of the rubber vibration isolator 31 so that the adjustment bolt 32 is erected on the rubber vibration isolator 31 .

Next, the male threaded portion 32b of the upper end of the adjusting bolt 32 is screwed into the adjusting nut 33 which is fitted and attached to the underfloor material 21 of the flooring 20 with the pedestal 34 sandwiched therebetween. The underfloor material 21 is fixed to the support leg 30 by inserting the upper ends of the adjustment bolts 32 into the through holes 23 of the underfloor material 21 .

As a result, the floor forming member 10 in which the support legs 30 are attached to the underfloor material 21 of the floor material 20 is manufactured.

After that, with the anti-vibration rubber 31 side facing down, the support legs 30 to which the underfloor material 21 is connected are set on the base surface of the floor slab 11, and as shown in FIG. The first short end surface 21a of the material 21 and the second short end surface 21b of the underfloor material 21 of the other adjacent floor material 20 are connected. As a result, the short end faces of the underfloor materials 21 of the plurality of floor materials 20 are connected and fixed.

Since the supporting legs 30 of the floor forming member 10 are provided only on one first short end face 21a of the underfloor member 21, the floor forming member 10 cannot stand alone on the floor slab 11. As shown in FIG. By fitting the short end faces of the adjacent floor forming members 10 together, one floor forming member 10 has a supporting leg 30 fixed below the lower rectangular member on the side of the second short end face 21b, and a second It is erected on the floor slab 11 by being supported by the support leg 30 of the other floor forming member 10 installed on the lower surface of the central rectangular member on the side of the first short end surface 21a.

The short end faces of the plurality of underfloor members 21 are fixed to each other by applying an adhesive to the male and female portions 211 of the first short end face 21a and the second short end face 21b of the underfloor member 21, or This can be done by a method of attaching an adhesive material such as a double-sided tape to the solid portion 211 on the side of the first short end surface 21a and the second short end surface 21b of the material 21, or the like.

As shown in FIG. 15 , the floor forming member continuum 2 configured by the plurality of floor forming members 10 is erected on the floor slab 11 by connecting the short end faces of the plurality of floor forming members 10 . do.

Next, as shown in FIG. 16, the longitudinal end face of the underfloor material 21 of the flooring material 20 constituting one continuous body of floor forming members 2 is attached to the floor material 20 constituting the other adjacent continuous body of floor forming members 2 . It connects with the longitudinal end surface of the underfloor material 21 . The other floor-forming member continuum 2 is connected to the one floor-forming member continuum 2 with a shift of about 1/2 of the longitudinal length of the underfloor material 21 of the flooring 20 . The longitudinal end faces of the plurality of underfloor members 21 can be connected to each other in the same manner as the method of connecting the short end faces of the plurality of underfloor members 21 described above.

When connecting the short end surfaces and the long end surfaces of the underfloor materials 21 of the plurality of floor materials 20, by fitting the male joint portion 211 to the female joint portion 212 of the other underfloor member 21, the adjacent floors are connected. The surfaces of the material 20 are flush with each other. The height of each floor material 20 may be finely adjusted by turning the adjusting bolts 32 to raise and lower the pedestal 34 , thereby adjusting the height of the upper surface of the floor material 20 .

As described above, the solid portion 211 on the first short end face 21a side of the underfloor member 21 of one floor forming member 10 is connected to the second short end face 21b side of the underfloor member 21 of the other floor forming member 10. It is made to fit into the female portion 212 . Then, the solid portion 211 on the side of the first longitudinal end face 21c of the underfloor member 21 of one floor forming member 10 is connected to the second longitudinal end face of the underfloor member 21 of the other floor forming member 10 that is different from the other floor forming member 10 . It is made to fit into the female portion 212 on the side of 21d to be connected. The floor structure 1 is constructed by combining a plurality of floor forming members 10 by connecting their short end surfaces and longitudinal end surfaces.

Thus, the floor structure 1 has a floor-forming member 10 and the floor-forming member 10 is provided with an underfloor member 21 . The underfloor material 21 has a male and female portion 211 and a female portion 212 . It is assumed that the solid portion 211 is formed by laminating three rectangular members (an upper rectangular member, a central rectangular member, and a lower rectangular member) as the underfloor member 21 . At this time, the end faces 21a _Y2Z2 and 21c _X1Z2 of the central rectangular member are formed outside the end faces 21a _Y2Z3 and 21c _X1Z3 of the upper rectangular member and the end faces 21a _Y2Z1 and 21c _X1Z1 of the lower rectangular member. there is The female portion 212 is arranged such that the end faces 21b _Y1Z2 and 21d _X2Z2 of the central rectangular member are located inside the end faces 21b _Y1Z3 and 21d _X2Z3 of the upper rectangular member and the end faces 21b _Y1Z1 and 21d _X2Z1 of the lower rectangular member. forming.

When a plurality of floor forming members 10 are combined, the male portion 211 formed on the first short end surface 21a of one floor forming member 10 is formed on the second short end surface 21b of the other floor forming member 10. The female portion 212 is fitted so as to be sandwiched therebetween. In addition, the lower surface of the central rectangular member of the first short end surface 21a of one floor forming member 10 is placed on the upper surface of the lower rectangular member of the second short end surface 21b of the other floor forming member 10 and fixed. . As a result, a plurality of floor forming members 10 can be laid on the floor slab 11 with their short end faces connected to each other. Further, by connecting the short end surfaces of the plurality of floor forming members 10 to each other, the plurality of floor forming members 10 can be made independent on the floor slab 11 . Then, a plurality of floor forming member continuities 2 (see FIG. 15) in which the short end faces of the plurality of floor forming members 10 are connected are prepared. After that, the male portion 311 of the first longitudinal end surface 21c of the floor forming member 10 of one floor forming member continuous body 2 (see FIG. 15) is attached to the floor forming member of the other floor forming member continuous body 2 (see FIG. 15). 10 is fitted into the female portion 312 formed on the second longitudinal end face 21d. Also, the lower surface of the central rectangular member of the first longitudinal end surface 21c of one floor forming member 10 is placed on the upper surface of the lower rectangular member of the second longitudinal end surface 21d of the other floor forming member 10 and connected.

Adjacent floor forming members 10 can be combined efficiently and easily, and surfaces of adjacent floor finishing materials 10 can be easily flushed. Therefore, the floor forming member 10 is excellent in workability, and the floor structure 1 having a flat floor surface can be easily constructed.

Therefore, by configuring the floor structure 1 with a plurality of floor forming members 10, it is possible to have a stable and flat floor surface in a shorter period of time. In addition, the floor structure 1 can be used in existing buildings, etc., and can be applied when renovating the floor structure, etc., so that the cost of renovating the floor can be reduced.

The floor forming member 10 integrally forms an underfloor material 21 and a floor finishing material 22 . Therefore, compared to the case where the underfloor material 21 and the floor finishing material 22 are separately brought in, the underfloor material 21 is assembled, and then the floor finishing material 22 is pasted on the underfloor material 21, the floor structure The number of members at the time of construction can be reduced, and the cost of carrying in and storing can be reduced. In addition, since the floor forming member 10 integrally forms the subfloor material 21 and the floor finishing material 22, the floor structure 1 can be constructed by the same worker at the same time, thereby improving work efficiency of construction of the floor structure 1. It is possible to reduce the work cost. Furthermore, since the floor forming member 10 integrally forms the subfloor material 21 and the floor finishing material 22, the floor structure 1 can be easily assembled. It is possible to suppress variations in the quality of the floor structure 1 to be processed. Therefore, for example, it is possible to suppress variations in the quality of the floor structure 1 to be constructed due to the degree of experience of workers, etc., so that the floor structure 1 with stable quality can be easily constructed. In addition, since the floor forming member 10 integrally forms the underfloor material 21 and the floor finishing material 22, compared to the case where the floor finishing material is attached to the underfloor material by bonding with an adhesive, it is easier to attach the floor to the underfloor material. It is possible to omit the time required for the adhesive used for bonding the finishing material to harden. Therefore, the working efficiency of construction of the floor structure 1 can be further improved.

The floor forming member 10 forms the male portion 211 with a length L1 from the end surfaces 21b _Y1Z2 and 21d _X2Z2 of the central rectangular member forming the female portion 212 to the end surfaces 21b _Y1Z3 and 21d _X2Z3 of the upper rectangular member. The length from the end faces 21a _Y2Z3 and 21c _X1Z3 of the upper rectangular member to the end faces 21a _Y2Z2 and 21c _X1Z2 of the central rectangular member is L2 or longer. The length L1 represents the depth of the female portion 212, and the length L2 represents the amount of protrusion of the male portion 211. As shown in FIG. By setting the depth of the female portion 212 to be equal to or greater than the amount of protrusion of the male portion 211, the end faces 21a _Y2Z2 and 21c _X1Z2 of the central rectangular member of the male portion 211 of one flooring 20 are aligned with the female portion of the other flooring 20. Before contacting the end faces 21b _Y1Z2 and 21d _X2Z2 of the central rectangular member of the solid portion 212, the end faces 21b _Y1Z3 and 21d _X2Z3 of the upper rectangular member of the solid portion 211 of one flooring 20 are brought into contact with the other flooring 20. The end surfaces 21a _Y2Z3 and 21c _X1Z3 of the upper rectangular member of the female portion 212 can be brought into contact. Therefore, between the end surfaces 21b Y1Z2 and 21d _X2Z2 of the central rectangular member of the female portion 212 of one flooring _{20 and the end surfaces 21a Y2Z2 and 21c X1Z2 of the} central rectangular member of the male portion 211 of the adjacent flooring 20 A gap space S1 is formed in the . As a result, the floor finishing materials 22 adjacent to each other can be spread evenly without creating gaps between the joints. The gaps are often generated, for example, by drying and shrinking of the floor finishing material 22 after the construction of the floor forming member 10 . By setting the depth of the female portion 212 to be equal to or greater than the protruding amount of the male portion 211, it is possible to reduce the conspicuousness of the gaps and prevent deterioration of the appearance.

Further, when one floor forming member 10 and the other floor forming member 10 adjacent to each other are fitted together, the adhesive applied to the male and female portion 211 or the female and female portion 212 is applied to the male and female portion 211 and the female portion 212. It spreads not only in the part where is closely attached but also in the gap space S1. Then, the adhesive stays in these parts and hardens to bond the adjacent floor forming members 10 together. Therefore, most of the injected adhesive can stay between the floor forming members 10 and contribute to the bonding between the floor forming members 10 .

In the floor forming member 10, the length L3 from the end faces _21aY2Z1 , _21cX1Z1 of the lower rectangular member forming the male joint portion 211 to the end faces _21aY2Z2 , _21cX1Z2 of the central rectangular member forms the female joint portion 212. The length from the end faces 21b _Y1Z1 and 21d _X2Z1 of the central rectangular member to the end faces 21b _Y1Z1 and 21d _X2Z1 of the lower rectangular member is L4 or longer. As a result, the end faces 21a _Y2Z1 and 21c _X1Z1 of the lower rectangular members forming the male and female portion 211 of one flooring 20 are aligned with the end faces 21b of the lower rectangular member forming the female portion 212 of the other flooring 20. Before _Y1Z1 and _21dX2Z1 come into contact with each other, the end surfaces _21aY2Z3 and _21cX1Z3 of the upper rectangular member forming the male portion 211 of one flooring 20 are in contact with the upper rectangular member forming the female portion 212 of the other flooring 20. It can be brought into contact with the end faces 21b _Y1Z3 , 21d _X2Z3 of the shaped member. Therefore, the end surfaces 21b _Y1Z1 and 21d _X2Z1 of the central rectangular member forming the female portion 212 of one flooring 20, and the end surfaces 21a _Y2Z2 of the central rectangular member forming the male portion 211 of the adjacent flooring 20, 21c _X1Z2 creates a clearance space S2. As a result, the floor finishing materials 22 adjacent to each other can be spread evenly without creating gaps between the joints. Since the gap formed by drying the floor finishing material 22 after construction of the floor forming member 10 is a slight gap, by making the length L3 equal to or longer than the length L4, the conspicuousness of the gap can be reduced and the appearance is poor. can prevent it from becoming

In the floor forming member 10, the thickness H2 of the lower rectangular member of the female portion 212 of the underfloor member 21 is 30% to 60% of the thickness H1 of the underfloor member 21. As shown in FIG. By setting the thickness H2 of the female portion 212 within a predetermined range, the strength of the lower rectangular member of the underfloor member 21 can be increased. Damage etc. can be prevented. In addition, through holes 23 through which adjusting bolts 32 can move vertically are formed in the lower rectangular member of the underfloor member 21 so that the height of the supporting legs 30 can be adjusted. The strength around the hole 23 tends to be locally low, and the durability tends to be low. In particular, since the lower rectangular member of the underfloor material 21 is provided at the position of the joint portion of the short end surface of the floor material 20, it is a portion that easily bends and deforms when receiving an impact. Among the 20, the burden is particularly large and easy to apply. By setting the thickness H2 of the lower rectangular member of the underfloor material 21 within a predetermined range, the floor forming member 10 increases the strength of the lower rectangular member of the underfloor material 21 and It is possible to enhance the absorption performance of the impact load applied to the lower rectangular member. Therefore, even if an impact is applied to the position of the lower rectangular member of the underfloor material 21 of the floor material 20, that is, the joint portion of the short end surface of the floor material 20, the impact can be stably received. As a result, even if an impact or the like is applied to the position of the lower rectangular member of the underfloor material 21 of the flooring material 20, damage such as a crack starts from the vicinity of the through hole 23 of the lower rectangular member of the underfloor material 21. can be reduced. Furthermore, by setting the thickness H2 of the lower rectangular member of the underfloor member 21 within a predetermined range, the height of the through-hole 23 can be increased, so that the range of adjusting the height of the support leg 30 can be increased. We can make it big.

In the floor forming member 10, the support leg 30 is provided at the position of the lower rectangular member of the underfloor material 21 formed on the side of the second short end surface 21b of the underfloor material 21 in a plan view. It is provided at a position substantially at the center of the end face 21b. As a result, the rigidity near the short end surfaces of the floor material 20 can be increased, and variations in the rigidity near the short end surfaces of the floor material 20 can be reduced.

The floor forming member 10 is provided so that a part of the supporting leg 30 straddles the lower rectangular member of the underfloor member 21 in plan view. As a result, the support legs 30 can be provided so as to be positioned above the joints of the short end surfaces of the floor material 20, so that bending of the joints of the short end surfaces of the floor material 20 can be suppressed.

The floor forming member 10 is configured such that each end face (first short end face 21a, second short end face 21b, first longitudinal end face 21c, and second longitudinal end face 21d) of the underfloor member 21 is formed at an arbitrary corner. Chamfering or R-shape processing is preferred. As a result, when the male portion 211 of one floor forming member 10 is fitted into the female portion 212 of the other adjacent floor forming member 10, the engagement is reduced and the fitting is facilitated.

As described above, the floor forming member 10 according to one embodiment is excellent in workability, and the floor structure 1 forming a flat floor surface can be easily constructed. , hospitals, etc., which have a double-floor structure.

In the present embodiment, the support leg 30 is provided at a position substantially in the center of the second short end surface 21b of the underfloor material 21 in plan view, but the size and shape of the underfloor material 21 may vary. It can be designed as appropriate. For example, the support leg 30 may be installed near the first longitudinal end surface 21c or near the second longitudinal end surface 21d of the second short end surface 21b in a plan view. may be provided on the lower rectangular member of the underfloor material 21 .

In this embodiment, as shown in FIG. 17, the support leg 30 may be provided on the lower rectangular member of the underfloor member 21 provided on the second longitudinal end face 21d in plan view. It is preferable that the support leg 30 is provided substantially at the center of the second longitudinal end face 21d. In this case, as shown in FIG. 18, the corner portion of the first longitudinal end surface 21c of the flooring 20 of the other two floor forming members 10 adjacent to the second longitudinal end surface 21d of the flooring 20 of one floor forming member 10 The support leg 30 is positioned under the joint between and. Therefore, the single support leg 30 can more efficiently support the floor surface, and the construction efficiency can be further improved.

In this embodiment, as shown in FIG. 19, two support legs 30 are provided near both ends of the lower rectangular member of the underfloor member 21 on the second short end face 21b in plan view of the floor member 20. may have been As a result, as shown in FIG. 20, one floor forming member 10 is supported at two points at the second short end surface 21b of the floor member 20, so that the floor forming members 10 are supported at two points. The strength of the hand end face side can be further increased, and the laying of the plurality of floor forming members 10 can be made more stable. Therefore, even if an impact is applied to the positions of the short end surfaces of the floor forming members 10 of the floor structure 1, the impact can be received more stably.

In this embodiment, as shown in FIG. 21, the support legs 30 are provided on the lower rectangular members of the underfloor material 21 at the second short end faces 21b of the underfloor material 21 in plan view of the underfloor material 21. In addition to being provided, it may be provided on the lower rectangular member of the underfloor material 21 at the second longitudinal end surface 21 d of the underfloor material 21 . In this case, as shown in FIG. 22, both of the two support legs 30 are substantially central portions of the second short end face 21b and the second longitudinal end face 21d of the underfloor material 21 in plan view. It is preferably provided at the position of the joint. As a result, the strength of both the short end faces and the long end faces of the plurality of floor forming members 10 can be increased, and the laying can be made more stable. Furthermore, since one of the floor forming members 10 is supported at two points, that is, the central portion and the corner portion of the second short end face 21b of the floor member 20, the short sides of the plurality of floor forming members 10 are supported. The strength of the hand end face side can be further increased. Therefore, even if an impact is applied to the position of the short end surface or the long end surface of the floor forming members 10 of the floor structure 1, the impact can be received more stably, and the hardness of the entire floor surface of the floor structure 1 varies. can be made smaller. In particular, even if an impact is applied to the positions of the short end surfaces of the floor forming members 10 of the floor structure 1, the impact can be received more stably.

In this embodiment, the through hole 23 of the lower rectangular member of the underfloor member 21 penetrates the lower rectangular member of the underfloor member 21, but it does not have to be penetrated.

In the present embodiment, the main surface 213 (see FIG. 4) of the underfloor material 21 has a rectangular shape in a plan view. It's okay. In this case, since the floor finishing material 22 has a shape corresponding to the size of the main surface 213 (see FIG. 4) of the underfloor material 21, the shape of the main surface 213 (see FIG. 4) of the underfloor material 21 in plan view The plan view shape of the floor finishing material 22 is designed according to the above. When the main surface 213 (see FIG. 4) of the underfloor material 21 has a square shape in plan view, the first short end surface 21a and the second short end surface 21b, the first longitudinal end surface 21c and the second The two longitudinal end faces 21d are any of the opposing end faces.

In this embodiment, each of the underfloor material 21 and the floor finishing material 22 is composed of one sheet, but may be composed of two or more laminated sheets.

In the present embodiment, the floor material 20 may be provided with a waste board between the underfloor material 21 and the floor finishing material 22 . The scrap board is laid on the upper surface of the underfloor material 21. - 特許庁A scrap board is also called an underlay board or a scrap board. The scrap board is a rectangular board, and is formed in substantially the same shape as the underfloor material 21 and the floor finishing material 22 in plan view. As the scrap board, for example, plywood of softwood or hardwood, plywood using both softwood veneer and hardwood veneer, fiberboard, OSB, particle board, and the like are used. HDF, MDF, etc. are mentioned as a fiberboard. The scrap board is fixed to the underfloor material 21 with, for example, an adhesive or screws. Note that the discard board may be composed of one sheet, or may be composed of two or more sheets.

In this embodiment, the adjustment bolt 32 is connected to the base 34 via the adjustment nut 33. The adjustment bolt 32 is provided with a female threaded portion in the insertion hole 34a of the base 34, and the adjustment bolt 32 is connected to the base 34. You may make it connect directly and fix.

As described above, the embodiments of the present invention have been described, but the above embodiments are presented as examples, and the present invention is not limited by the above embodiments. The above embodiments can be implemented in various other forms, and various combinations, omissions, replacements, changes, etc. can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

1 Double floor structure (floor structure)
10 floor forming member 11 floor slab (floor base)
20 floor material 21 underfloor material (underfloor panel)
21a First short end face 21b Second short end face 21c First longitudinal end face 21d Second longitudinal end face 22 Floor finishing material (flooring material)
22a, 22b short end faces 22c, 22d long end faces 211 male portion 212 female portion 213 main surface 30 support leg S1, S2 clearance space

Claims (14)

An underfloor material used in a floor structure arranged on a floor base and having an outer shape in which a plurality of rectangular members are overlapped with each other in a plan view,
The three rectangular members of an upper rectangular member, a central rectangular member, and a lower rectangular member are laminated,
one of a first short end face, a second short end face facing the first short end face, a longitudinal end face adjacent to the first short end face, and the first longitudinal end face a second longitudinal end face facing the
The lower rectangular member has a through hole into which the upper end of the adjustment bolt of the support leg is inserted,
A convex solid portion is formed on each of the first short end face and the first longitudinal end face,
A recessed hermetic portion is formed on the second short end surface and the second longitudinal end surface ,
The underfloor material has a thickness of 40 mm to 100 mm,
The underfloor material, wherein the thickness of the lower rectangular member of the female portion is 30% to 60% of the thickness of the underfloor material. The underfloor material has an outer shape in which three rectangular members, namely , the upper rectangular member , the central rectangular member, and the lower rectangular member, are overlapped while being displaced in the longitudinal direction and the lateral direction. 1. The underfloor material according to 1. 3. The underfloor material according to claim 2, wherein the male and female portions are formed by the central rectangular member, the upper rectangular member and the lower rectangular member. an end surface of the lower rectangular member forming the solid portion is located inside the end surfaces of the other rectangular members in a plan view,
4. The underfloor material according to claim 3, wherein the end face of the lower rectangular member forming the female portion is located outside the end faces of the other rectangular members in a plan view. The length L1 from the end face of the central rectangular member forming the female portion to the end face of the upper rectangular member is defined by The underfloor material according to claim 4, wherein the length to the end face is L2 or longer. The length L3 from the end surface of the lower rectangular member forming the male portion to the end surface of the central rectangular member is the length L3 from the end surface of the central rectangular member forming the female portion to the lower rectangular portion. The underfloor material according to claim 4 or 5, wherein the length to the end surface of the member is L4 or longer. A floor forming member used in a floor structure arranged on a floor base,
An underfloor material according to any one of claims 1 to 6 ,
a support leg for supporting the underfloor material;
a floor finishing material having the same size as the top surface, provided on the top surface of the underfloor material;
A floor forming member having a 8. The floor forming member according to claim 7 , wherein at least one supporting leg is provided on the underfloor member on the second short end face and the second longitudinal end face in plan view. A plurality of floor forming members according to claim 7 or 8 ,
The male portion on the first short end surface side of one floor forming member is fitted into the female portion on the second short end surface side of another floor forming member, and/or the one floor forming member A floor structure in which the male portion on the first longitudinal end face side of is fitted into the female portion on the second longitudinal end face side of another floor forming member different from the other floor forming member. An underfloor material used in a floor structure arranged on a floor base and having an outer shape in which a plurality of rectangular members are overlapped with each other in a plan view,
The three rectangular members of an upper rectangular member, a central rectangular member, and a lower rectangular member are laminated,
one of a first short end face, a second short end face facing the first short end face, a longitudinal end face adjacent to the first short end face, and the first longitudinal end face a second longitudinal end face facing the
The lower rectangular member has a through hole into which the upper end of the adjustment bolt of the support leg is inserted,
One of the first short end surface and the second short end surface is formed with a convex male portion or a concave female portion, and the other is formed with the convex male portion or the concave portion. is formed, or neither the convex male portion nor the concave female portion is formed,
One of the first longitudinal end surface and the second longitudinal end surface is formed with the convex male portion or the concave female portion, and the other is formed with the convex male portion and the concave portion. None of the herringbone is formed ,
The underfloor material has a thickness of 40 mm to 100 mm,
The underfloor material, wherein the thickness of the lower rectangular member of the female portion is 30% to 60% of the thickness of the underfloor material. A floor forming member used in a floor structure arranged on a floor base,
The underfloor material according to claim 10 ;
a support leg for supporting the underfloor material;
a floor finishing material having the same size as the top surface, provided on the top surface of the underfloor material;
A floor forming member having a The floor structure according to claim 9 , wherein the floor forming member according to claim 11 is connected to an end portion of the floor structure. 13. The floor structure according to claim 9 or 12 , which is for indoor sports facilities. A construction method for a floor structure in which a plurality of floor forming members having support legs fixed to an underfloor member are arranged on a floor base,
The underfloor material is configured by laminating three rectangular members, namely, an upper rectangular member, a central rectangular member, and a lower rectangular member, and has an outer shape in which a plurality of rectangular members overlap when viewed from above. has
The underfloor material has a first short end face, a second short end face opposite to the first short end face, and one first longitudinal end face of longitudinal end faces adjacent to the first short end face. , and a second longitudinal end surface facing the first longitudinal end surface,
The lower rectangular member has a through hole into which the upper end of the adjustment bolt of the support leg is inserted,
A convex solid portion is formed on each of the first short end face and the first longitudinal end face,
No recessed female portion is formed on the second short end face and the second longitudinal end face,
The underfloor material has a thickness of 40 mm to 100 mm,
The thickness of the lower rectangular member of the female portion is 30% to 60% of the thickness of the underfloor material ,
The male portion on the first short end surface side of one floor forming member is fitted into the female portion on the second short end surface side of the other floor forming member, and the first longitudinal end surface side of the one floor forming member is fitted. A method for constructing a floor structure for forming a floor surface by fitting and connecting the male portion of the above to the female portion on the second longitudinal end face side of another floor forming member different from the other floor forming member.

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