JP2021161701A - Double floor structure - Google Patents

Abstract

To provide a double floor structure which is easily constructed and in which a construction position of a support leg is easily grasped.SOLUTION: In a double floor structure 10, a plurality of floor finishing materials 20 are respectively laid on a plurality of support legs 30 in a male/female tongue joining state where a groove of one female tongue is engaged with a protrusion of the other male tongue, of neighboring two floor finishing materials 20, 20. In the double floor structure 10, on each support leg 30, the male/female tongue joining portions of at least two floor finishing materials 20 are fixed, in which in one of the male/female tongue joining portions a lower protrusion of the female tongue is fixed to the support leg 30 by an adhesive and a nail-like member and in which the other of the male/female tongue joining portions is fixed to the support leg 30 by an adhesive in a male/female tongue joining state. In the double floor structure 10, each support leg 30 is at least provided below four corner portions of each floor finishing material 20.SELECTED DRAWING: Figure 1

Description

The present invention relates to a dry double floor structure.

Conventionally, a dry double-floor structure has been used as a floor structure of an apartment house or the like (see, for example, Patent Document 1 below).

In Patent Document 1, a double floor surface is formed by supporting a floor base material made of plywood, particle board, etc. on a plurality of support legs erected vertically and horizontally at equal intervals on a floor slab surface made of concrete or the like. However, a double floor structure in which a floor finishing material such as wood flooring is fixed on the floor is disclosed.

This type of double-floor structure has the advantage that the unevenness of the floor slab surface can be absorbed by the support legs, so there is no need to smooth the floor slab surface, and wiring and piping work in the underfloor space is easy. Have.

Japanese Unexamined Patent Publication No. 11-293897

However, in the double floor structure, the floor base material and the floor finishing material are usually provided so as to be offset so that the positions of the joints are not aligned vertically. Therefore, after laying the floor finishing material, it is difficult to know the construction position of a plurality of support legs provided along the outer circumference of the floor base material, and the place with high yield strength cannot be known without looking at the design drawings and the like. was there.

Further, in the above-mentioned double floor structure, there is a problem that the floor base material and the floor finishing material must be laid, which requires a lot of time and effort for construction.

The present invention has been made in view of these points, and an object of the present invention is to provide a double-floor structure that is easy to construct and the construction position of a support leg can be easily understood.

In order to achieve the above object, in the present invention, the floor base material is omitted, and a plurality of floor finish materials are joined on the support legs to form a double floor surface, and the four corners of the floor finish material are supported. It was decided to provide support legs so that they could be used.

Specifically, the first invention is a plurality of support legs erected on the floor surface, and a plurality of rectangular shapes supported by the plurality of support legs and forming the floor surface above the floor surface. It is a double floor structure provided with a floor finishing material, and in each of the plurality of floor finishing materials, a female fruit having a groove is formed at the side ends of two adjacent sides, and the side ends of the other two sides are formed. A male fruit having a convex portion that fits into the groove is formed in the portion, and the convex portion of the other male fruit fits into the groove of one of the two adjacent floor finishing materials. The female fruit is laid on the plurality of support legs, and the lower convex portion protruding laterally from the bottom surface of the groove below the groove protrudes laterally from the bottom surface of the groove above the groove. It is formed so that the protruding height is higher than the upper convex portion to be formed, and at least two actual joints of the floor finishing material are fixed to each of the supporting legs, and the female of the two floor finishing materials is fixed. In one of the floor finishing materials on which the fruit is formed, the lower convex portion is fixed to the support leg by an adhesive and a nail-shaped member, and the other floor finishing material is formed by the adhesive in the actual splicing state. It is fixed to the support legs, and the support legs are provided at least below the four corners of each floor finishing material.

In the first invention, a plurality of floor finishing materials are actually spliced on a plurality of support legs to form a double floor surface. Therefore, unlike the conventional double-floor structure, it is not necessary to lay the floor base material and then the floor finishing material, and the man-hours at the time of construction are remarkably reduced, and the construction becomes easy.

Further, in the first invention, each support leg is configured to support at least two joints of the floor finishing material. With such a configuration, the actual joints of the two floor finishing materials are reinforced by the support legs. Therefore, even if the floor base material is omitted and a plurality of floor finishing materials are laid on the plurality of support legs, the actual joints are made. It is possible to provide a double floor structure that is hard to bend in the portion.

Further, in the first invention, the floor finishing material is formed in a shape in which the lower convex portion of the female seed protrudes laterally from the upper convex portion. By forming the female fruit in such a shape, the nail-shaped member can be easily driven in when the actual joint portion of the floor finishing material is fixed to the support leg. Therefore, according to the above configuration, the floor finishing material and the support legs can be easily fixed.

Further, in the first invention, support legs are always provided below the four corners of each floor finishing material. Therefore, even after constructing a double floor by laying a plurality of floor finishing materials on a plurality of support legs, it is possible to easily recognize the construction positions of the support legs (four corners of each floor finishing material). can.

As described above, according to the first invention, it is possible to provide a double-floor structure that is easy to construct and the construction position of the support leg can be easily understood.

In the second invention, in the first invention, at least one decorative groove extending parallel to the short side is formed on the upper surface of each floor finishing material, and the support leg is formed on the upper surface of each floor finishing material. Provided below the intersection of at least one of the formed decorative grooves or an extension of at least one of the decorative grooves and the two long side edge edges of the upper surface of each floor finishing material. It is characterized by being present.

In the third invention, in the second invention, the support legs are formed on the upper surface of each floor finishing material, and all the decorative grooves or extension lines of all the decorative grooves and the two long side ends. It is characterized in that it is provided below the intersection with the edge.

In the second and third inventions, not only below the four corners of each floor finishing material, but also a decorative groove formed on the upper surface of each floor finishing material or an extension line thereof and two long side edge edges. Support legs are also provided below the intersection of. Therefore, even after constructing a double floor by laying a plurality of floor finishing materials on a plurality of support legs, the construction position of the support legs can be easily recognized only by looking at the upper surface of each floor finishing material. be able to.

In particular, in the third invention, the support legs are provided below the intersections of the extension lines of all the decorative grooves formed on the upper surface of each floor finishing material and the two long side edge edges. Therefore, even after the construction of the double floor, the construction position of the support legs (the four corners of each floor finishing material, the extension lines of the decorative groove, and the two long side edge edges) can be seen simply by looking at the upper surface of each floor finishing material. The intersection) can be recognized more easily.

The fourth invention is a plurality of inventions in which the decorative groove divides the upper surface of each floor finishing material into three equal parts, four equal parts, six equal parts, or eight equal parts in the long side direction. It is characterized in that it is provided on at least one bisector of the bisector.

In the fourth invention, the decorative groove is formed on at least one bisector of a plurality of bisectors that divide the upper surface of each floor finishing material into three equal parts, four equal parts, six equal parts, or eight equal parts in the long side direction. It is provided. With such a configuration, when the support legs are arranged at intervals equal to or multiple times the intervals of the plurality of bisectors of each floor finishing material, even after the construction of the double floor. The construction position of the support leg can be easily recognized from the position of the decorative groove only by looking at the upper surface of each floor finishing material without using a measure or the like.

A fifth aspect of the present invention is the fourth aspect of the present invention, wherein the support legs are provided below the intersection of all of the plurality of bisectors of each floor finishing material and the two long side edge edges. It is characterized by that.

In the fifth invention, a plurality of bisectors that divide the upper surface of each floor finishing material into three equal parts, four equal parts, six equal parts, or eight equal parts in the long side direction and the intersection of the two long side edge edges. Support legs are always provided below. According to such a configuration, even after the construction of the double floor, the construction position of the support leg can be easily recognized from the position of the decorative groove only by looking at the upper surface of each floor finishing material without using a measure or the like. can do.

A sixth aspect of the invention is the fourth or fifth aspect of the invention, wherein the plurality of floor finishing materials have at least one short side edge of the upper surface of each floor finishing material adjacent to each other in the short side direction. It is characterized in that it is laid so as to be arranged in a straight line with any of the above-mentioned decorative grooves of the floor finishing material.

In the sixth invention, the plurality of floor finishing materials are arranged so as to be staggered between two floor finishing materials adjacent to each other in the short side direction so that the positions of the short side edge of the upper surface are not aligned. That is, since the positions of the seams in the long side direction of the plurality of floor finishing materials are not aligned between the floor finishing materials adjacent to each other in the short side direction, the seam pattern is not monotonous and is composed of the plurality of floor finishing materials. The design of the floor surface is improved.

By the way, in order to arrange a plurality of support legs at equal intervals in the front-rear and left-right directions, two long-side edge edges, two short-side edge edges, and a plurality of equal division lines on the upper surface of the plurality of floor finishing materials are used. Therefore, it is necessary to arrange a plurality of floor finishing materials so that a grid pattern is formed in which each grid point is the construction position of the support leg. When a plurality of floor finishing materials are provided so that the positions of the short side edge of the upper surface are aligned between two floor finishing materials adjacent to each other in the short side direction, the two long side ends of the upper surface of the plurality of floor finishing materials are provided. The above-mentioned lattice pattern can be easily formed by the edge, the two short-side edge edges, and the plurality of equal parts, but a plurality of floor finishing materials can be formed between two floor finishing materials adjacent to each other in the short side direction. When the edges on the short side of the upper surface are staggered so as not to be aligned, the lattice pattern cannot be easily formed.

Therefore, in the sixth invention, at least one short side edge of each upper surface of the plurality of floor finishing materials is aligned with the decorative groove of any of the other floor finishing materials adjacent in the short side direction. It is laid so that it can be placed. Since the decorative groove is provided on at least one equal division line of a plurality of equal division lines that equally divide the upper surface of each floor finishing material in the long side direction, a plurality of floor finishing materials are laid as described above. As a result, a grid pattern is formed in which the two long side edge edges, the two short side edge edges, and the plurality of equal division lines on the upper surface of the plurality of floor finishing materials form a grid pattern in which each grid point is the construction position of the support leg. Will be done. As a result, according to the sixth invention, when constructing a plurality of floor finishing materials, a plurality of floor finishing materials can be easily applied between two floor finishing materials adjacent to each other in the short side direction without using a measure or the like. The edges on the short side of the upper surface can be staggered so as not to be aligned. Therefore, according to the sixth invention, it is possible to easily construct a double floor having a floor surface having an excellent design in which the seam pattern is not monotonous.

As described above, according to the present invention, the floor base material is omitted, and a plurality of floor finishing materials are laid on the support legs to form a double floor surface, and at least the floor finishing materials are supported below the four corners. By providing the legs, it is possible to provide a double-floor structure that is easy to construct and the construction position of the support legs can be easily understood.

FIG. 1 is a plan view of the double floor structure according to the first embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line II-II of FIG. FIG. 3 is an enlarged view of a portion III of FIG. FIG. 4 is a partially enlarged view of the vicinity of the floor finishing material with the dots of FIG. FIG. 5 is a plan view of the double floor structure according to the second embodiment of the present invention. FIG. 6 is a partially enlarged view of the vicinity of the floor finishing material with the dots of FIG. FIG. 7 is a plan view of the double floor structure according to the third embodiment of the present invention. FIG. 8 is a partially enlarged view of the vicinity of the floor finishing material with the dots of FIG. 7.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following embodiments are merely exemplary and are not intended to limit the present invention, its applications or its uses.

<< Embodiment 1 of the invention >>
In the first embodiment, as an example of the double floor structure according to the present invention, a double floor structure laid on a floor slab surface (floor surface) 1 made of concrete will be described.

As shown in FIGS. 1 and 2, the double floor structure 10 is erected on a plurality of rectangular floor finishing materials 20, ..., 20 and a floor slab surface 1, and the plurality of rectangular floor finishing materials are erected. A plurality of support legs 30, ..., 30 for supporting 20, ..., 20 at a predetermined height position above the floor slab surface 1 are provided.

-Structure of each part-
[Floor finishing material]
As shown in FIGS. 1 and 2, the floor finishing material 20 is a rectangular plate material. The floor finishing material 20 may be made of any material as long as it is generally used as a floor material, but in the first embodiment, the floor finishing material 20 has wood fiber boards on both the upper and lower surfaces of the wood core material. It is formed by laminating and adhering. Further, in the first embodiment, the floor finishing material 20 is formed to have a short side length of 289 mm and a long side length of 1818 mm.

As the wood core material, for example, a plywood having a thickness of 9 to 24 mm (preferably 12 to 15 mm), an oriented strand board (OSB), a veneer laminated material (LVL), or the like can be used. Further, as the wood fiber board, for example, a medium density fiber board (MDF) having a thickness of 2.5 to 4.0 mm can be used.

As shown in FIGS. 2 and 3, the floor finishing material 20 is formed with female seeds 21 having grooves 21a at the side ends (short side end and long side end) of two adjacent sides. A male fruit 22 having a convex portion 22a that fits into the groove 21a of the female fruit 21 is formed at the side end portions (short side side end portion and long side side end portion) of the other two sides. The female fruit 21 and the male fruit 22 are formed over the entire length of each side end portion to be formed. Further, the groove 21a and the convex portion 22a are formed on the side surface of the wood core material of the floor finishing material 20.

The female 21 has a lower convex portion 21b forming a side wall of the groove 21a below the groove 21a and an upper convex portion 21c forming a side wall of the groove 21a above the groove 21a. Further, in the female fruit 21, the protruding height of the lower convex portion 21b (distance between the bottom surface 21d of the groove 21a and the tip surface 21e of the lower convex portion 21b) L1 is the protruding height of the upper convex portion 21c (groove 21a). The distance between the bottom surface 21d and the tip surface 21f of the upper convex portion 21c) is formed to be longer than L2 (L1> L2). The protruding height L1 of the lower convex portion 21b is about 1.5 to 2.5 times the protruding height L2 of the upper convex portion 21c, and is formed to be about 10 to 25 mm.

The male 22 is formed between the lower concave portion 22b and the upper concave portion 22c formed at the lower end portion and the upper end portion of the floor finishing material 20 at the side end portions of each side on which the male fruit 22 is formed. The convex portion 22a is formed. The lower recess 22b and the upper recess 22c are formed by cutting out the lower end portion and the upper end portion of the floor finishing material 20 in a substantially rectangular shape in a plan view from one end to the other end of each side end portion. It is formed. The depth of the lower concave portion 22b (distance between the tip surface 22d of the convex portion 22a and the bottom surface 22e of the lower concave portion 22b) D1 is the depth of the upper concave portion 22c (the tip surface 22d of the convex portion 22a and the bottom surface of the upper concave portion 22c). It is formed so as to be deeper than D2 (distance from 22f) (D1> D2). The depth D1 of the lower recess 22b is formed to be about 1.5 to 2.5 times the depth D2 of the upper recess 22c.

The protruding height L2 of the upper convex portion 21c of the female fruit 21 is formed longer than the depth D2 of the upper concave portion 22c of the male fruit 22 (L2> D2). Further, the protruding height L1 of the lower convex portion 21b is the depth D1 of the lower concave portion 22b and the depth D2 of the upper concave portion 22c from the protruding height L2 of the upper convex portion 21c. It is formed shorter than the sum of the difference X (X = L2-D2) obtained by subtracting (L1 <D1 + X).

As shown in FIG. 4, the corner portion of the upper surface 20a of the floor finishing material 20 is chamfered. In the first embodiment, each corner of the upper surface 20a of the floor finishing material 20 is cut out by an inclined surface inclined by approximately 45 degrees with respect to the upper surface 20a, and the chamfered surface 23 inclined with respect to the upper surface 20a is formed. It is formed. When the convex portion 22a of the other male fruit 22 is inserted into the groove 21a of one female fruit 21 of the two adjacent floor finishing materials 20 and the two floor finishing materials 20 are actually joined, the chamfered surfaces of the upper surfaces 20a of each other are connected. 23, 23 are combined to form a groove 51 having a V-shaped cross section.

Further, a decorative groove 52 is formed on the upper surface 20a of the floor finishing material 20. The decorative groove 52 extends parallel to the short side from the long side end edge 20al of the upper surface 20a of the floor finishing material 20. In the first embodiment, the decorative groove 52 divides the upper surface 20a of the floor finishing material 20 into four equal parts in the long side direction, and the decorative groove 52 divides the upper surface 20a into four equal parts in the center selected as one of three bisectors Ld, Ld, and Ld. It is provided on the line Ld. The decorative groove 52 is provided so as to be bridged between the two long side edge edges 20al and 20al at the center of the upper surface 20a of the floor finishing material 20 in the longitudinal direction. In the first embodiment, the decorative groove 52 has a V-shaped cross section having the same shape as the groove 51 formed by the two chamfered surfaces 23, 23. The decorative groove 52 does not have to have the same shape as the groove 51.

[Support legs]
As shown in FIG. 2, the support legs 30 are vertically erected on the floor slab surface 1 to support the plurality of floor finishing materials 20, ..., 20 at a predetermined height position above the floor slab surface 1. It is a material. The support leg 30 may be made of anything as long as it can support the floor finishing material 20 on the floor slab surface 1, but in the first embodiment, the support leg 30 has a ground contact portion 31 and a strut portion. It has 32 and a pedestal portion 33.

The ground contact portion 31 is a flat plate-shaped portion that is adhesively fixed to the floor slab surface 1. In the first embodiment, the ground contact portion 31 is made of rubber.

The strut portion 32 has a bolt portion 32a and a nut portion 32b, and is configured so that its length can be changed. The bolt portion 32a is a rod-shaped member having a circular cross section, the lower end of which is fixed to the center in the plan view of the grounding portion 31, and the upper end of which is a male screw. The nut portion 32b is a cylindrical member that opens downward, and its upper end is fixed to the lower surface of the pedestal portion 33. The nut portion 32b has a female screw formed on the inner surface thereof to be screwed with the male screw of the bolt portion 32a. By rotating the bolt portion 32a relative to the nut portion 32b, the length of the strut portion 32 is changed.

The pedestal portion 33 is a flat plate-shaped portion thicker than the ground contact portion 31 fixed to the upper end of the support column portion 32 (the upper end of the nut portion 32b). The pedestal portion 33 may have any shape as long as it can support a part of a plurality of floor finishing materials 20, ..., 20, but in the first embodiment, it is formed in a square shape in a plan view. .. The pedestal portion 33 may have a circular shape or a rectangular shape. The width of the pedestal portion 33 in the front-rear direction is the width of the actual joint portion of the two floor finishing materials 20 and 20 adjacent to the pedestal portion 33 in the front-rear direction (the bottom surface of the groove 21a of the female fruit 21). The distance from 21d to the bottom surface 22e of the lower recess 22b of the male 22 is preferably D1 + L2-D2) or more. Similarly, the width of the pedestal portion 33 in the left-right direction is the width of the two floor finishing materials 20 and 20 that are actually joined on the pedestal portion 33 in the left-right direction (the width of the groove 21a of the female fruit 21). The distance from the bottom surface 21d to the bottom surface 22e of the lower recess 22b of the male 22 is preferably D1 + L2-D2) or more.

The pedestal portion 33 is formed with an insertion hole (not shown) for inserting a driver into the nut portion 32b. The height of the pedestal portion 33 can be adjusted by rotating the bolt portion 32a with a screwdriver through the insertion hole to change the length of the strut portion 32. After adjusting the height, an adhesive is injected into the insertion hole to fix the bolt portion 32a and the nut portion 32b.

-Arrangement configuration-
As shown in FIG. 1, a plurality of support legs 30, ..., 30 are arranged on the floor slab surface 1 at equal intervals in the front-rear direction and the left-right direction, respectively. Specifically, in the first embodiment, the plurality of support legs 30, ..., 30 have a 289 mm pitch equal to the length in the short side direction of the floor finishing material 20 in the front-rear direction parallel to the wall surface W1, and the wall surface W2. In the left-right direction parallel to the floor finishing material 20, the floor finishing material 20 is erected on the floor slab surface 1 at a pitch of 454.5 mm, which corresponds to a quarter of the length in the long side direction.

In the first embodiment, since the floor finishing material 20 is a plate material of 289 mm × 1818 mm, the floor is provided by providing the support legs 30 at a pitch of 289 mm in the front-rear direction and a pitch of 454.5 mm in the left-right direction as described above. The four corners of the finishing material 20, the three equal dividing lines Ld, Ld, and Ld that divide the upper surface 20a of the floor finishing material 20 into four equal parts in the long side direction, and the two long side edge edges 20al and 20al. Support legs 30 will be provided below each of the intersections (6 pieces). In other words, in the first embodiment, the four corners of the floor finishing material 20 and the three equal dividing lines Ld, Ld, Ld and 2 that divide the upper surface 20a of the floor finishing material 20 into four equal parts in the long side direction. A plurality of support legs 30, ..., 30 are provided at a pitch of 289 mm in the front-rear direction and 454 in the left-right direction so that support legs 30 are provided below the intersections (6 pieces) with the two long-side edge edges 20al and 20al. It stands on the floor slab surface 1 at a pitch of .5 mm.

As shown in FIG. 1, in the double floor structure 10, the plurality of floor finishing materials 20, ..., 20 are laid on the plurality of support legs 30, ..., 30. In the first embodiment, the plurality of floor finishing materials 20, ..., 20 have a male fruit 22 formed at the side ends of the two sides of the wall surfaces W1 and W2, respectively, and a female fruit 21 formed at the side ends of the other two sides. The convex portion 22a of the male fruit 22 of the floor finishing material 20 adjacent to the front, back, left and right is fitted into the groove 21a of each female fruit 21 so as to be actually joined.

In the double floor structure 10, the left end (the short side end 20as on the left side) of the leftmost floor finishing material 20 is the wall surface W1 of the plurality of floor finishing materials 20, ..., 20 in the first row along the wall surface W2. The plurality of floor finishing materials 20, ..., 20 in the second row are laid along the above, and the left end (left side) of each floor finishing material 20 with respect to the plurality of floor finishing materials 20, ..., 20 in the first row. The short side end portion 20as) is laid at a position shifted to the right by approximately half the length of the long side (909 mm in the first embodiment). Similarly, the plurality of floor finishing materials 20, ..., 20 in the third row have the left end (short side end on the left side) of each floor finishing material 20 with respect to the plurality of floor finishing materials 20, ..., 20 in the second row. The portion 20as) is laid at a position shifted to the right by approximately half the length of the long side. That is, in the double floor structure 10, the plurality of floor finishing materials 20, ..., 20 in each row are the left end (left side) of each floor finishing material 20 with respect to the plurality of floor finishing materials 20, ..., 20 in the front row. The short side end portion 20as) is laid at a position shifted to the right by approximately half the length of the long side.

In the double floor structure 10, the leftmost floor finishing material 20 in each row is laid with the same length without being cut in the odd row, but half the length in the long side direction in the even row. It is cut and laid in.

In the double floor structure 10, the plurality of floor finishing materials 20, ..., 20 in each row have the left end (short side on the left side) of each floor finishing material 20 with respect to the plurality of floor finishing materials 20, ..., 20 in the front row. A plurality of floor finishing materials 20, ..., 20 are laid so that the side end portion 20as) is arranged at a position shifted to the right by approximately half the length of the long side. Therefore, in the first embodiment, the longitudinal end edge (short side edge 20as) of the upper surface 20a of each floor finishing material 20 is in the short side direction (the front-rear direction perpendicular to the wall surface W1 and parallel to the wall surface W2). The upper surface 20a of the other adjacent floor finishing material 20 is provided on the equal dividing line 54 that divides the upper surface 20a into four equal parts in the long side direction, and is arranged in line with the decorative groove 52. In other words, the short side edge 20as of the upper surface 20a of each floor finishing material 20 divides the upper surface 20a of the other floor finishing material 20 adjacent in the short side direction into four equal parts in the long side direction. A plurality of floor finishing materials 20, ..., 20 are arranged so as to be arranged in a straight line with the decorative groove 52 provided on the equal division line Ld (central equal division line Ld) of one of Ld, Ld, and Ld. , Multiple floor finishing materials 20, ..., 20 in each row have a longer left end (short side end 20as on the left side) of each floor finishing material 20 with respect to a plurality of floor finishing materials 20, ..., 20 in the front row. It is laid so that it is placed at a position shifted to the right by about half the length of the side.

In the first embodiment, a plurality of floor finishing materials 20, ..., 20 are provided so that at least one of the upper surfaces 20a, ..., 20a has a short side edge 20as adjacent to the other floor finishing material 20 in the short side direction. It is laid so as to be arranged in a straight line with the decorative groove 52 of. The decorative groove 52 is on at least one bisector Ld (center bisector Ld) of three bisectors Ld, Ld, and Ld that divide the upper surface 20a of each floor finishing material 20 into four equal parts in the long side direction. It is provided in. Therefore, by laying the plurality of floor finishing materials 20, ..., 20 as described above, the two long side edge 20al of each of the upper surfaces 20a, ..., 20a of the plurality of floor finishing materials 20, ..., 20a, Lattice pattern grid points formed by 20al, two short side edge edges 20as, 20as, and three equal division lines Ld, Ld, Ld (four corners and 3 of each floor finishing material 20). The support legs 30 are provided below all of the intersections of the book equidistant lines Ld, Ld, and Ld with the two long side edge edges 20al and 20al).

-Fixing of floor finishing material and support legs-
As described above, in the first embodiment, each floor finishing material 20 has two long side edge edges 20al, 20al and 3 of the four corners of the floor finishing material 20 and the upper surface 20a of the floor finishing material 20. It is supported at a predetermined height position above the floor slab surface 1 by 10 support legs 30, ..., 30 provided below a total of 10 intersections with the equal division lines Ld, Ld, and Ld of the book. .. Further, as shown in FIG. 1, one floor finishing material 20 is adjacent to each of the two short side sides with respect to one floor finishing material 20 (see the floor finishing material 20 with dots in FIG. 1). However, two floor finishing materials 20 and 20 are adjacent to each other on the two long sides. Adhesive is applied to the groove 21a of one female fruit 21 and then the convex portion 22a of the other male fruit 22 is fitted into the two adjacent floor finishing materials 20 and 20, so that the actual joint portion is adhesively fixed. Will be done. Further, the floor finishing material 20 and the support legs 30 are fixed by an adhesive and a nail-shaped member (for example, screw nail, blood nail, finish nail, staple, etc.) 40. Specifically, in the floor finishing material 20 on which the female fruit 21 is formed, the lower surface of the lower convex portion 21b and the upper surface of the pedestal portion 33 of the support leg 30 are adhered with an adhesive, and the lower convex portion 21b is nailed. It is fixed to the support leg 30 by being fastened to the pedestal portion 33 by the shaped member 40. On the other hand, in the floor finishing material 20 on which the male fruit 22 is formed, the lower surface and the upper surface of the pedestal portion 33 of the support leg 30 are adhered by an adhesive, and the female fruit 21 of the floor finishing material 20 adjacent to the convex portion 22a is adhered. The inner surface of the groove 21a is fixed to the support leg 30 by being adhered to the inner surface of the groove 21a by an adhesive.

In the first embodiment, floor joists 41 and 41 made of two layers of wood are fixed to the edges of the floor slab surface 1 (near the walls of the wall surfaces W1 and W2), respectively. Then, in each floor finishing material 20 provided along the wall surfaces W1 and W2 near the wall, the male fruit 22 along the wall surfaces W1 and W2 is excised, and the end portion after the excision is formed into a floor joist 41 with an adhesive and a nail shape. It is fixed by a member. Specifically, at the end of the floor finishing material 20 after excision, the lower surface and the upper surface of the floor joist 41 are adhered by an adhesive, and the bottom surface of the floor finishing material 20 placed on the floor joist 41 is under the female fruit 21. The end of the lateral convex portion 21b is fixed to the floor joist 41 by being fastened to the floor joist 41 by a nail-shaped member.

-Double floor construction method-
In the case of the first embodiment, after laying a row of floor finishing materials 20 from the upper left corner portion (corner portion formed by the wall surfaces W1 and W2) of FIG. 1 to the opposite end along the wall surface W2, The floor finishing material 20 is laid one by one in the order of the second row, the third row, and so on.

Specifically, first, a plurality of support legs 30, ..., 30 are erected on the floor slab surface 1 at predetermined intervals in the vertical and horizontal directions. At this time, the four corners of each floor finishing material 20 to be laid later, the two long side edge edges 20al, 20al of the upper surface 20a of each floor finishing material 20, and the three equal dividing lines Ld, Ld, Ld. A plurality of support legs 30, ..., 30 are provided on the floor slab surface 1 at a pitch of 289 mm in the front-rear direction and a pitch of 454.5 mm in the left-right direction so that support legs 30 are provided below each of the intersections (6 pieces) with. Stand up in.

After the plurality of support legs 30, ..., 30 are erected, the height is adjusted. For height adjustment, the floor finishing material 20 is temporarily placed on the plurality of support legs 30, ..., 30, and each support leg 30 is arranged so that the floor finishing material 20 temporarily placed by a laser level or the like becomes horizontal. Adjust the height. To adjust the height of each support leg 30, a driver is inserted into the nut portion 32b through an insertion hole formed in the pedestal portion 33 to engage with the bolt portion 32a, and the bolt portion 32a is rotated to rotate the support leg 30. It is done by changing the height of the. When the height adjustment is completed, an adhesive is injected into the insertion holes of the pedestal portion 33 of each support leg 30 to fix the bolt portion 32a so as not to rotate with respect to the nut portion 32b.

After adjusting the height, a plurality of floor finishing materials 20, ..., 20 are laid in order on the plurality of support legs 30, ..., 30. As described above, in the first embodiment, after laying one row of the floor finishing material 20 from the upper left corner of FIG. 1 to the opposite end along the wall surface W2, the second row, the third row, ... The floor finishing material 20 is laid in a row in order as in.

Specifically, before laying each floor finishing material 20, an adhesive is applied to the upper surface of the pedestal portion 33 of the ten support legs 30, ..., 30 to which the floor finishing material 20 is fixed. Further, grooves of two floor finishing materials 20 and 20 (two floor finishing materials 20 and 20 adjacent to the upper side in FIG. 1) adjacent to the long side end portion on which the male fruit 22 of the floor finishing material 20 is formed. The inner surfaces of 21a and 21a and the inner surface of the groove 21a of the floor finishing material 20 (the floor finishing material 20 adjacent to the left side in FIG. 1) adjacent to the short side end on which the male fruit 22 of the finishing material 20 is formed. Apply adhesive to the floor.

Then, the floor finishing material 20 is placed on the pedestal portions 33 of the ten support legs 30, ..., 30 so that the convex portions 22a, 22a fit into the corresponding grooves 21a, 21a. Then, from above the lower convex portion 21b of the female fruit 21 formed on the long side end portion of the floor finishing material 20, the five lower convex portions 21b of the long side end portion are placed. The nail-shaped member 40 is driven toward the support legs 30, ..., 30. Similarly, the lower convex portion 21b of the short side end portion is placed from above the lower convex portion 21b of the female fruit 21 formed on the short side end portion of the floor finishing material 20. The nail-shaped member 40 is driven toward the two support legs 30, ..., 30. By such a process, each floor finishing material 20 is adhered and fixed to a plurality of adjacent floor finishing materials 20, ..., 20 and the actual joint portion, and the ten support legs 30, ..., 30 are provided with an adhesive. It will be fixed by the nail-shaped member 40.

As described above, in each floor finishing material 20 provided near the wall along the wall surfaces W1 and W2, the male fruit 22 along the wall surfaces W1 and W2 is cut off, and the end portion after the cut is cut into the floor joist 41. It is fixed by an adhesive and a nail-shaped member. Specifically, the cut end portion of the floor finishing material 20 is placed on the floor joist 41 to which the adhesive is applied on the upper surface, and the female fruit 21 of the floor finishing material 20 placed on the floor joist 41 is placed. The floor finishing material 20 is fixed to the floor joist 41 by driving a nail-shaped member from above toward the floor joist 41 so as to penetrate the end of the lower convex portion 21b. Further, although not shown, the ends of the finishing materials 20 (the ends on which the females 21 are formed) provided on the wall surface facing the wall surfaces W1 and W2 are also along the wall surfaces W1 and W2. It is fixed by the floor joist 41 adhesive and the nail-shaped member in the same manner as the end of each floor finishing material 20 provided near the wall.

By the above steps, a plurality of floor finishing materials 20, ..., 20 provided on the floor slab surface 1 at equal intervals are laid on the plurality of support legs 30, ..., 30 to obtain the present invention. A double floor having the double floor structure 10 is constructed, and a double floor surface is formed at a predetermined height position above the floor slab surface 1.

-Effect of Embodiment 1-
In the first embodiment, a plurality of floor finishing materials 20, ..., 20 are joined on the plurality of support legs 30, ..., 30 to form a double floor surface. Therefore, unlike the conventional double-floor structure, it is not necessary to lay the floor finishing material 20 after laying the floor base material, and the man-hours at the time of construction are remarkably reduced, and the construction becomes easy.

Further, in the first embodiment, each support leg 30 is configured to support at least two actual joints of the floor finishing materials 20 and 20. With such a configuration, since the actual joints of the two floor finishing materials 20, 20 are reinforced by the support legs 30, the floor base material is omitted, and a plurality of floor finishes are performed on the plurality of support legs 30, ..., 30. Even if the materials 20, ..., 20 are laid, it is possible to provide the double floor structure 10 which is hard to bend at the actual joint.

Further, in the first embodiment, the floor finishing material 20 is formed so that the lower convex portion 21b of the female fruit 21 protrudes laterally from the upper convex portion 21c. By forming the female fruit 21 in such a shape, the nail-shaped member 40 can be easily driven in when the actual joint portion of the floor finishing material 20 is fixed to the support leg 30. Therefore, according to the above configuration, the floor finishing material 20 and the support legs 30 can be easily fixed.

Further, in the first embodiment, the support legs 30 are always provided below the four corners of each floor finishing material 20. Therefore, even after a plurality of floor finishing materials 20, ..., 20 are laid on the plurality of support legs 30, ..., 30 to construct a double floor, the construction position of the support legs 30 (each floor finish). The four corners of the material 20) can be easily recognized.

As described above, according to the first embodiment, it is possible to provide the double floor structure 10 which is easy to construct and whose construction position of the support legs 30 can be easily understood.

Further, in the first embodiment, not only below the four corners of each floor finishing material 20, but also the decorative groove 52 formed on the upper surface 20a of each floor finishing material 20 and the two long side edge 20al, A support leg 30 is also provided below the intersection of 20 al. Therefore, even after laying a plurality of floor finishing materials 20, ..., 20 on the plurality of support legs 30, ..., 30 to construct a double floor, the upper surface 20a of each floor finishing material 20 is viewed. The construction position of the support leg 30 (below the intersection of the four corners of each floor finishing material 20 and the decorative groove 52 of the upper surface 20a of each finishing material 20 and the two long side edge edges 20al and 20al) can be easily recognized. be able to.

Further, in the first embodiment, the decorative groove 52 divides the upper surface 20a of each floor finishing material 20 into four equal parts in the long side direction, which is one of the three bisectors Ld, Ld, and Ld. It is provided above. With such a configuration, when the support legs 30 are arranged at an interval equal to or a plurality of times the interval between the three equal dividing lines Ld, Ld, and Ld of each floor finishing material 20, the double floor is used. Even after the construction of the above, the construction position of the support leg 30 can be easily recognized from the position of the decorative groove 52 simply by looking at the upper surface 20a of each floor finishing material 20 without using a measure or the like.

Further, in the first embodiment, the intersections of the three bisectors Ld, Ld, and Ld that divide the upper surface 20a of each floor finishing material 20 into four equal parts in the long side direction and the two long side edge edges 20al and 20al. The support leg 30 is always provided below the above. According to such a configuration, even after the construction of the double floor, the support legs 30 can be easily accessed from the position of the decorative groove 52 simply by looking at the upper surface 20a of each floor finishing material 20 without using a measure or the like. The construction position can be recognized.

Further, in the first embodiment, the positions of the short side edge 20as of the upper surface 20a are aligned between the two floor finishing materials 20 and 20 adjacent to each other in the short side direction of the plurality of floor finishing materials 20, ..., 20. They are arranged so that they do not exist. That is, if the positions of the joints of the plurality of floor finishing materials 20, ..., 20 in the long side direction are not aligned between the two floor finishing materials 20, 20 adjacent to each other in the short side direction, the seam pattern becomes monotonous. Instead, the design of the floor surface composed of a plurality of floor finishing materials 20, ..., 20 is improved.

By the way, in order to arrange the plurality of support legs 30, ..., 30 at equal intervals in the front-rear and left-right directions, the two long-side end edges 20al, 20al of the upper surfaces 20a of the plurality of floor finishing materials 20, ..., 20 are used. A plurality of floor finishing materials 20 so that a lattice pattern is formed in which the two short side edge edges 20as, 20as and the plurality of equidistant lines Ld, ..., Ld form a lattice pattern in which each lattice point is the construction position of the support leg 30. , ..., 20 need to be placed. When a plurality of floor finishing materials 20, ..., 20 are provided so that the positions of the short side edge 20as of the upper surface 20a are aligned between the two floor finishing materials 20 and 20 adjacent to each other in the short side direction, the plurality of floor finishing materials 20, ..., 20 are provided. The above lattice pattern can be easily formed by the two long side edge 20al, 20al of the upper surface 20a of the material 20, ..., 20, the two short side edge 20as, 20as, and the plurality of equidistant lines Ld, ..., Ld. Although it can be formed, the plurality of floor finishing materials 20, ..., 20 are arranged so that the positions of the short side edge 20as of the upper surface 20a are not aligned between the two floor finishing materials 20 and 20 adjacent to each other in the short side direction. When the grid pattern is staggered, the lattice pattern cannot be easily formed.

Therefore, in the first embodiment, the plurality of floor finishing materials 20, ..., 20 are attached to any of the other floor finishing materials 20 in which at least one short side edge 20as of each upper surface 20a is adjacent in the short side direction. It is laid so as to be arranged in line with the decorative groove 52. The decorative groove 52 is on at least one bisector Ld (center bisector Ld) of three bisectors Ld, Ld, and Ld that divide the upper surface 20a of each floor finishing material 20 into four equal parts in the long side direction. By laying a plurality of floor finishing materials 20, ..., 20 as described above, the two long side side edge 20al of the upper surface 20a of the plurality of floor finishing materials 20, ..., 20 , 20al, two short side edge edges 20as, 20as, and three bisectors Ld, Ld, and Ld form a grid pattern in which each grid point is the construction position of the support leg 30. As a result, according to the first embodiment, when constructing the plurality of floor finishing materials 20, ..., 20, the plurality of floor finishing materials 20, ..., 20 can be easily applied in the short side direction without using a measure or the like. It can be provided so as to be staggered so that the positions of the short side edge 20as of the upper surface 20a are not aligned between the two floor finishing materials 20 and 20 adjacent to the above. Therefore, according to the first embodiment, it is possible to easily construct a double floor having a floor surface having an excellent design in which the seam pattern is not monotonous.

<< 2nd Embodiment of the Invention >>
The second embodiment shown in FIG. 5 is a modification of the configuration and arrangement configuration of the floor finishing material 20 of the first embodiment. The configuration and arrangement of the support legs 30 are the same as those in the first embodiment. Hereinafter, the differences from the first embodiment will be described in detail.

[Floor finishing material]
The floor finishing material 20 of the second embodiment has the same configuration as that of the first embodiment except that the configuration of the upper surface 20a is different. In the second embodiment, as shown in FIGS. 5 and 6, two vertical grooves 53 and two horizontal grooves (decorative grooves) 54 are formed on the upper surface 20a of the floor finishing material 20. In the second embodiment, the vertical groove 53 and the horizontal groove 54 have a V-shaped cross section having the same shape as the groove 51 formed by the two chamfered surfaces 23, 23. The vertical groove 53 and the horizontal groove 54 do not have to have the same shape as the groove 51.

The vertical groove 53 extends parallel to the long side from one short side end portion 20as of the upper surface 20a of the floor finishing material 20 to the other short side side end portion 20as. In the second embodiment, the vertical groove 53 is provided on two equal division lines that divide the upper surface 20a of the floor finishing material 20 into three equal parts in the short side direction. That is, the vertical groove 53 is provided so as to be bridged between the two short side edge edges 20as and 20as on the equal division line that divides the upper surface 20a of the floor finishing material 20 into three equal parts in the short side direction.

The lateral groove 54 extends parallel to the short side from the long side end portion 20al of the upper surface 20a of the floor finishing material 20. In the second embodiment, two lateral grooves 54 are formed on the upper surface 20a of each floor finishing material 20. The two lateral grooves 54 are provided so as to be bridged between the two long side edge edges 20as and 20as of the upper surface 20a of each floor finishing material 20 and the two vertical grooves 53 and 53. Further, the two lateral grooves 54 are provided on one of the five bisectors Ld, ..., Ld that divide the upper surface 20a of each floor finishing material 20 into six equal parts in the long side direction, respectively. Has been done. In the second embodiment, the two lateral grooves 54 form the second bisector Ld, Ld (that is, the upper surface 20a of the floor finishing material 20 in the long side direction) from both ends of the five bisectors Ld, ..., Ld, respectively. It is provided on two bisectors Ld, Ld) that divide into three equal parts. That is, the lateral groove 54 is bridged between the long side edge 20al and the vertical groove 53 on the two bisectors Ld and Ld that divide the floor finishing material 20 into three equal parts in the long side direction. It is provided as follows.

[Support legs]
Since the support legs 30 are configured in the same manner as in the first embodiment, detailed description thereof will be omitted.

-Arrangement configuration-
As shown in FIGS. 5 and 6, in the double floor structure 10 of the second embodiment, a plurality of support legs 30, ..., 30 are equally spaced in the front-rear direction and the left-right direction on the floor slab surface 1. Is located in. Specifically, in the second embodiment, the plurality of support legs 30, ..., 30 have a 289 mm pitch equal to the length in the short side direction of the floor finishing material 20 in the front-rear direction parallel to the wall surface W1, and the wall surface W2. In the left-right direction parallel to the floor finishing material 20, the floor finishing material 20 is erected on the floor slab surface 1 at a pitch of 303 mm, which corresponds to one sixth of the length in the long side direction.

In the second embodiment, since the floor finishing material 20 is a plate material of 289 mm × 1818 mm, the floor finishing material is provided by providing the support legs 30 at a pitch of 289 mm in the front-rear direction and a pitch of 303 mm in the left-right direction as described above. The intersections of the five equal division lines Ld, ..., Ld that divide the four corners of 20 and the upper surface 20a of the floor finishing material 20 into six equal parts in the long side direction and the two long side edge edges 20al, 20al. Support legs 30 will be provided below each of the (10 pieces). In other words, in the second embodiment, the four corners of the floor finishing material 20 and the five equal division lines Ld, ..., Ld and 2 that divide the upper surface 20a of the floor finishing material 20 into six equal parts in the long side direction. A plurality of support legs 30, ..., 30 are provided at a pitch of 289 mm in the front-rear direction and 303 mm in the left-right direction so that support legs 30 are provided below the intersections (10 pieces) with the two long side edge edges 20al and 20al. It stands on the floor slab surface 1 at a pitch.

As shown in FIGS. 5 and 6, in the double floor structure 10, the plurality of floor finishing materials 20, ..., 20 are laid on the plurality of support legs 30, ..., 30. In the second embodiment, the plurality of floor finishing materials 20, ..., 20 have a male fruit 22 formed at the side ends of the two sides of the wall surfaces W1 and W2, respectively, and a female fruit 21 formed at the side ends of the other two sides. The convex portion 22a of the male fruit 22 of the floor finishing material 20 adjacent to the front, back, left and right is fitted into the groove 21a of each female fruit 21 so as to be actually joined.

In the double floor structure 10, the left end (the short side end 20as on the left side) of the leftmost floor finishing material 20 is the wall surface W1 of the plurality of floor finishing materials 20, ..., 20 in the first row along the wall surface W2. The plurality of floor finishing materials 20, ..., 20 in the second row are laid along the above, and the left end (left side) of each floor finishing material 20 with respect to the plurality of floor finishing materials 20, ..., 20 in the first row. The short side end portion 20as) is laid at a position shifted to the right by approximately two-thirds of the long side length (1212 mm in the second embodiment). Similarly, the plurality of floor finishing materials 20, ..., 20 in the third row have the left end (short side end on the left side) of each floor finishing material 20 with respect to the plurality of floor finishing materials 20, ..., 20 in the second row. The portion 20as) is laid at a position shifted to the right by about two-thirds of the length of the long side. That is, in the double floor structure 10, the plurality of floor finishing materials 20, ..., 20 in each row are the left end (left side) of each floor finishing material 20 with respect to the plurality of floor finishing materials 20, ..., 20 in the front row. The short side end portion 20as) is laid at a position shifted to the right by approximately two-thirds of the long side length.

In the double floor structure 10, the leftmost floor finishing material 20 in each row is laid in the (3N + 1) row (N = 0, 1, 2, ...) With the same length without being cut. , (3N + 2) row (N = 0,1,2, ...) Is cut to two-thirds of the length in the long side direction and laid, and (3N + 3) row (N = 0,1,2, ...) ) Is cut to one-third of the length in the long side direction and laid.

In the double floor structure 10, the plurality of floor finishing materials 20, ..., 20 in each row have the left end (short side on the left side) of each floor finishing material 20 with respect to the plurality of floor finishing materials 20, ..., 20 in the front row. A plurality of floor finishing materials 20, ..., 20 are laid so that the side end portion 20as) is arranged at a position shifted to the right by about two-thirds of the long side length. Therefore, in the second embodiment, the longitudinal end edge (short side edge 20as) of the upper surface 20a of each floor finishing material 20 is in the short side direction (the front-rear direction perpendicular to the wall surface W1 and parallel to the wall surface W2). The upper surface 20a of the other adjacent floor finishing material 20 is arranged in a straight line with the decorative groove 52 provided on the equal division line 54 that divides the upper surface 20a into six equal parts in the long side direction. In other words, the short side edge 20as of the upper surface 20a of each floor finishing material 20 divides the upper surface 20a of the upper surface 20a of the other floor finishing material 20 adjacent in the short side direction into six equal parts in the long side direction. A plurality of floor finishes so as to be arranged in line with the decorative groove 52 provided on the equal division line Ld (second equal division line Ld from the end) of the equal division lines Ld, ..., Ld. The materials 20, ..., 20 are the left end (short side on the left side) of each floor finishing material 20 with respect to the plurality of floor finishing materials 20, ..., 20 in each row with respect to the plurality of floor finishing materials 20, ..., 20 in the front row. The side end portion 20as) is laid so as to be arranged at a position shifted to the right by about two-thirds of the length of the long side.

In the second embodiment, a plurality of floor finishing materials 20, ..., 20 are provided, and at least one of the upper surfaces 20a, ..., 20a has a short side edge 20as adjacent to the other floor finishing material 20 in the short side direction. It is laid so as to be arranged in a straight line with the decorative groove 52 of. The decorative groove 52 is formed by at least one bisector Ld (second bisector from the end) of five bisectors Ld, ..., Ld that divide the upper surface 20a of each floor finishing material 20 into six equal parts in the long side direction. It is provided on Ld). Therefore, by laying the plurality of floor finishing materials 20, ..., 20 as described above, the two long side edge 20al of each of the upper surfaces 20a, ..., 20a of the plurality of floor finishing materials 20, ..., 20a, Lattice pattern grid points formed by 20al, 2 short side edge edges 20as, 20as, and 5 equal division lines Ld, ..., Ld (4 corners and 5 of each floor finishing material 20). The support legs 30 will be provided below all of the equal division lines Ld, ..., Ld of the book and the intersections of the two long side edge edges 20al and 20al).

-Fixing of floor finishing material and support legs-
As described above, in the second embodiment, each floor finishing material 20 has four corners of the floor finishing material 20 and two long side edge edges 20al and 20al of the upper surface 20a of the floor finishing material 20. It is supported at a predetermined height position above the floor slab surface 1 by 14 support legs 30, ..., 30 provided below a total of 14 points at intersections with the five equal division lines Ld, ..., Ld. There is. Further, as shown in FIG. 5, one floor finishing material 20 is adjacent to one floor finishing material 20 (see the floor finishing material 20 with dots in FIG. 5) on each of the two short sides. However, two floor finishing materials 20 and 20 are adjacent to each other on the two long sides. Adhesive is applied to the groove 21a of one female fruit 21 and then the convex portion 22a of the other male fruit 22 is fitted into the two adjacent floor finishing materials 20 and 20, so that the actual joint portion is adhesively fixed. Will be done. Further, the floor finishing material 20 and the support legs 30 are fixed by an adhesive and a nail-shaped member (for example, screw nail, blood nail, finish nail, staple, etc.) 40. The method of fixing the floor finishing material 20 and the support legs 30 is the same as that of the first embodiment.

-Double floor construction method-
In the case of the second embodiment, after laying a row of floor finishing materials 20 from the upper left corner portion (corner portion formed by the wall surfaces W1 and W2) of FIG. 5 to the opposite end along the wall surface W2, The floor finishing material 20 is laid one by one in the order of the second row, the third row, and so on.

Specifically, first, a plurality of support legs 30, ..., 30 are erected on the floor slab surface 1 at predetermined intervals in the vertical and horizontal directions. At this time, the four corners of each floor finishing material 20 to be laid later, the two long side edge edges 20al, 20al and the five equal dividing lines Ld, ..., Ld of the upper surface 20a of each floor finishing material 20 A plurality of support legs 30, ..., 30 stand on the floor slab surface 1 at a pitch of 289 mm in the front-rear direction and a pitch of 303 mm in the left-right direction so that support legs 30 are provided below each of the intersections (10) with and. Set up.

After the plurality of support legs 30, ..., 30 are erected, the height is adjusted. The height adjustment is performed in the same manner as in the first embodiment. When the height adjustment is completed, an adhesive is injected into the insertion holes of the pedestal portion 33 of each support leg 30 to fix the bolt portion 32a so as not to rotate with respect to the nut portion 32b.

After adjusting the height, a plurality of floor finishing materials 20, ..., 20 are laid in order on the plurality of support legs 30, ..., 30. As described above, also in the second embodiment, after laying one row of the floor finishing material 20 from the upper left corner portion of FIG. 5 to the opposite end along the wall surface W2, the second row, the third row, The floor finishing materials 20 are laid in a row in order as in ...

Specifically, before laying each floor finishing material 20, an adhesive is applied to the upper surface of the pedestal portion 33 of the 14 support legs 30, ..., 30 to which the floor finishing material 20 is fixed. Further, grooves of two floor finishing materials 20 and 20 (two floor finishing materials 20 and 20 adjacent to the upper side in FIG. 5) adjacent to the long side end portion on which the male fruit 22 of the floor finishing material 20 is formed. The inner surfaces of 21a and 21a and the inner surface of the groove 21a of the floor finishing material 20 (the floor finishing material 20 adjacent to the left side in FIG. 5) adjacent to the short side end on which the male fruit 22 of the finishing material 20 is formed. Apply adhesive to the floor.

Then, the floor finishing material 20 is placed on the pedestal portions 33 of the 14 support legs 30, ..., 30 so that the convex portions 22a, 22a fit into the corresponding grooves 21a, 21a. Then, from above the lower convex portion 21b of the female fruit 21 formed on the long side end portion of the floor finishing material 20, the seven lower convex portions 21b of the long side end portion are placed. The nail-shaped member 40 is driven toward the support legs 30, ..., 30. Similarly, the lower convex portion 21b of the short side end portion is placed from above the lower convex portion 21b of the female fruit 21 formed on the short side end portion of the floor finishing material 20. The nail-shaped member 40 is driven toward the two support legs 30, ..., 30. By such a process, each floor finishing material 20 is adhered and fixed to a plurality of adjacent floor finishing materials 20, ..., 20 and the actual joint portion, and the ten support legs 30, ..., 30 are provided with an adhesive. It will be fixed by the nail-shaped member 40.

As described above, in each floor finishing material 20 provided near the wall along the wall surfaces W1 and W2, the male fruit 22 along the wall surfaces W1 and W2 is cut off, and the end portion after the cut is cut into the floor joist 41. It is fixed by an adhesive and a nail-shaped member. Specifically, the cut end portion of the floor finishing material 20 is placed on the floor joist 41 to which the adhesive is applied on the upper surface, and the female fruit 21 of the floor finishing material 20 placed on the floor joist 41 is placed. The floor finishing material 20 is fixed to the floor joist 41 by driving a nail-shaped member from above toward the floor joist 41 so as to penetrate the end of the lower convex portion 21b. Further, although not shown, the ends of the finishing materials 20 (the ends on which the females 21 are formed) provided on the wall surface facing the wall surfaces W1 and W2 are also along the wall surfaces W1 and W2. It is fixed by the floor joist 41 adhesive and the nail-shaped member in the same manner as the end of each floor finishing material 20 provided near the wall.

By the above steps, a plurality of floor finishing materials 20, ..., 20 provided on the floor slab surface 1 at equal intervals are laid on the plurality of support legs 30, ..., 30 to obtain the present invention. A double floor having the double floor structure 10 is constructed, and a double floor surface is formed at a predetermined height position above the floor slab surface 1.

-Effect of Embodiment 2-
Even with the double floor structure 10 of the second embodiment, the same effect as that of the first embodiment can be obtained.

<< Embodiment 3 of the invention >>
The third embodiment shown in FIGS. 7 and 8 is a modification of the configuration and arrangement of the floor finishing material 20 of the first embodiment. The configuration and arrangement of the support legs 30 are the same as those in the first embodiment. Hereinafter, the differences from the first embodiment will be described in detail.

[Floor finishing material]
The floor finishing material 20 of the third embodiment has the same configuration as that of the first embodiment except that the dimensions and the configuration of the upper surface 20a are different.

In the third embodiment, the floor finishing material 20 is formed to have a short side length of 303 mm and a long side length of 1818 mm. Further, in the third embodiment, as shown in FIGS. 7 and 8, two decorative grooves 52 and 52 are formed on the upper surface 20a of the floor finishing material 20.

The two decorative grooves 52, 52 extend parallel to the short side from the long side end edge 20al of the upper surface 20a of the floor finishing material 20. In the third embodiment, the two decorative grooves 52, 52 are selected as one of the five bisectors Ld, ..., Ld that divide the upper surface 20a of the floor finishing material 20 into six equal parts in the long side direction. The bisectors Ld and Ld (two bisectors Ld and Ld that divide the upper surface 20a of the floor finishing material 20 into three equal parts in the long side direction) are provided on the second bisectors Ld and Ld from both ends. The two decorative grooves 52 and 52 are provided so as to be bridged between the two long side edge edges 20al and 20al at the center of the upper surface 20a of the floor finishing material 20 in the longitudinal direction. In the third embodiment, the two decorative grooves 52 and 52 have a V-shaped cross section having the same shape as the groove 51 formed by the two chamfered surfaces 23 and 23. The decorative groove 52 does not have to have the same shape as the groove 51.

[Support legs]
Since the support legs 30 are configured in the same manner as in the first embodiment, detailed description thereof will be omitted.

-Arrangement configuration-
As shown in FIGS. 7 and 8, in the double floor structure 10 of the third embodiment, a plurality of support legs 30, ..., 30 are equally spaced in the front-rear direction and the left-right direction on the floor slab surface 1. Is located in. Specifically, in the third embodiment, the plurality of support legs 30, ..., 30 have a 303 mm pitch equal to the length in the short side direction of the floor finishing material 20 in the front-rear direction parallel to the wall surface W1, and the wall surface W2. In the left-right direction parallel to the floor finishing material 20, the floor finishing material 20 is erected on the floor slab surface 1 at a pitch of 303 mm, which corresponds to one sixth of the length in the long side direction.

In the third embodiment, since the floor finishing material 20 is a plate material of 303 mm × 1818 mm, the floor finishing material 20 4 is provided by providing the support legs 30 at 303 mm pitches in the front-rear and left-right directions as described above. Five equal division lines Ld, ..., Ld that divide one corner portion and the upper surface 20a of the floor finishing material 20 into six equal parts in the long side direction, and the intersections (10 pieces) of the two long side end edges 20al, 20al. ) Will be provided with support legs 30 below each. In other words, in the third embodiment, the four corners of the floor finishing material 20 and the five equal division lines Ld, ..., Ld and 2 that divide the upper surface 20a of the floor finishing material 20 into six equal parts in the long side direction. A plurality of support legs 30 ... It stands on the slab surface 1.

As shown in FIGS. 7 and 8, in the double floor structure 10, the plurality of floor finishing materials 20, ..., 20 are laid on the plurality of support legs 30, ..., 30. In the third embodiment, the plurality of floor finishing materials 20, ..., 20 have a male fruit 22 formed at the side ends of the two sides of the wall surfaces W1 and W2, respectively, and a female fruit 21 formed at the side ends of the other two sides. The convex portion 22a of the male fruit 22 of the floor finishing material 20 adjacent to the front, back, left and right is fitted into the groove 21a of each female fruit 21 so as to be actually joined.

In the double floor structure 10, the plurality of odd-numbered rows of floor finishing materials 20, ..., 20 including the first row along the wall surface W2 are the left end of the leftmost floor finishing material 20 (the short side end portion 20as on the left side). ) Is laid along the wall surface W1, and the plurality of floor finishing materials 20, ..., 20 in even-numbered rows are the left end (left side) of each floor finishing material 20 with respect to the plurality of floor finishing materials 20, ..., 20 in the front row. The short side end portion 20as) is laid at a position shifted to the right by approximately one-sixth of the long side length (303 mm in the present embodiment 1).

In the double floor structure 10, the leftmost floor finishing material 20 in the odd-numbered rows is laid with the same length without being cut, but the leftmost floor finishing material 20 in the even-numbered rows is in the long side direction. It is cut to a length of about 1/6 of the length and laid.

In the double floor structure 10, a plurality of floor finishing materials 20, ..., 20 in an even number of rows have the left end (short side on the left side) of each floor finishing material 20 with respect to the plurality of floor finishing materials 20, ..., 20 in the front row. A plurality of floor finishing materials 20, ... 20 are laid. Therefore, in the third embodiment, the longitudinal end edge (short side edge 20as) of the upper surface 20a of each floor finishing material 20 is in the short side direction (the front-rear direction perpendicular to the wall surface W1 and parallel to the wall surface W2). It is not arranged in line with the decorative groove 52 provided on the upper surface 20a of the other adjacent floor finishing material 20.

In the third embodiment, the plurality of floor finishing materials 20, ..., 20 in the even-numbered rows have the left end (short side end on the left side) of each floor finishing material 20 with respect to the plurality of floor finishing materials 20, ..., 20 in the front row. The plurality of floor finishing materials 20, ..., 20 are arranged so that the portion 20as) is arranged at a position shifted to the right by approximately one-sixth of the long side length (303 mm in the present embodiment 1). It is laid. Further, in the third embodiment, in each floor finishing material 20, the two decorative grooves 52 are two bisectors Ld, ..., Ld that divide each upper surface 20a into six equal parts in the long side direction. It is provided on the bisectors Ld and Ld (the second bisector Ld from both ends). Therefore, by laying a plurality of floor finishing materials 20, ..., 20 as described above, two of each floor finishing material 20 are laid on the floor surface composed of the plurality of floor finishing materials 20, ..., 20. A brick joint (horse tread) pattern is formed by the long side edge 20al and 20al, the two short side edge 20as and 20as, and the two decorative grooves 52 and 52, respectively. Then, in the third embodiment, since the support legs 30 are erected at a pitch of 303 mm as described above, the intersections of the vertical and horizontal lines of the brick joint pattern (the two long side sides of each floor finishing material 20). The support legs 30 are provided below all of the edge 20al and 20al and the intersections of the two short side edge edges 20as and 20as and the two decorative grooves 52 and 52, respectively.

-Fixing of floor finishing material and support legs-
As described above, in the third embodiment, each floor finishing material 20 has four corners of the floor finishing material 20 and two long side edge edges 20al and 20al of the upper surface 20a of the floor finishing material 20. It is supported at a predetermined height position above the floor slab surface 1 by 14 support legs 30, ..., 30 provided below a total of 14 points at intersections with the five equal division lines Ld, ..., Ld. There is. Further, as shown in FIG. 7, one floor finishing material 20 is adjacent to each of the two short side sides with respect to one floor finishing material 20 (see the floor finishing material 20 with dots in FIG. 7). However, two floor finishing materials 20 and 20 are adjacent to each other on the two long sides. Adhesive is applied to the groove 21a of one female fruit 21 and then the convex portion 22a of the other male fruit 22 is fitted into the two adjacent floor finishing materials 20 and 20, so that the actual joint portion is adhesively fixed. Will be done. Further, the floor finishing material 20 and the support legs 30 are fixed by an adhesive and a nail-shaped member (for example, screw nail, blood nail, finish nail, staple, etc.) 40. The method of fixing the floor finishing material 20 and the support legs 30 is the same as that of the first embodiment.

-Double floor construction method-
Since the construction method of the double floor having the double floor structure 10 is the same as that of the second embodiment, detailed description thereof will be omitted.

-Effect of Embodiment 3-
Even with the double floor structure 10 of the third embodiment, the same effect as that of the first embodiment can be obtained.

Further, in the third embodiment, the bricks are formed by the two long side edge edges 20al and 20al of each floor finishing material 20, the two short side edge edges 20as and 20as, and the two decorative grooves 52 and 52, respectively. A joint (horse stepping joint) pattern is formed. Then, in the third embodiment, since the support legs 30 are erected at a pitch of 303 mm as described above, the intersections of the vertical and horizontal lines of the brick joint pattern (the two long side ends of each floor finishing material 20). Support legs 30 are provided below all of the edges 20al and 20al and the intersections of the two short side edge edges 20as and 20as and the two decorative grooves 52 and 52, respectively. Therefore, according to the third embodiment, even after a plurality of floor finishing materials 20, ..., 20 are laid on the plurality of support legs 30, ..., 30 to construct a double floor, each floor finishing is performed. The construction position of the support leg 30 can be easily recognized only by looking at the brick joint pattern on the upper surface 20a of the material 20.

Further, in the third embodiment, the decorative groove 52 divides the upper surface 20a of each floor finishing material 20 into six equal parts in the long side direction, and two equal bisectors Ld, ..., Ld. , Is provided on Ld. With such a configuration, the upper surface 20a of each floor finishing material 20 is divided into five equal parts in the long side direction as compared with the case where only one decorative groove 52 is formed on the upper surface 20a of each floor finishing material 20n. The positions of the lines Ld, ..., Ld can be recognized more easily. Further, in the third embodiment, since the support legs 30 are arranged at intervals (303 mm) equal to the intervals of the five bisectors Ld, ..., Ld, the construction position of the support legs 30 can also be determined by finishing each floor. This can be done more easily than in the case where only one decorative groove 52 is formed on the upper surface 20a of the material 20n.

<< Other Embodiments >>
In the first embodiment, the plurality of support legs 30, ..., 30 are arranged at a pitch of 289 mm in the front-rear direction and a pitch of 454.5 mm in the left-right direction, and in the second embodiment, the plurality of support legs 30, ..., 30 are arranged. , The pitch was 289 mm in the front-rear direction and the pitch was 303 mm in the left-right direction. However, the arrangement configuration of the support legs 30 is not limited to this. The distance between the adjacent support legs 30 and 30 may be any distance as long as the support legs 30 are always provided below the four corners of each floor finishing material 20, but may be 200 to 500 mm. The degree is preferable.

Further, in the first embodiment, one decorative groove 52 is formed for one floor finishing material 20, and in the second and third embodiments, two decorative grooves 52 are formed for one floor finishing material 20. Grooves (horizontal grooves 54 in the second embodiment and decorative grooves 52 in the third embodiment) were formed, but the number of decorative grooves 52 and 54 for one floor finishing material 20 is not limited to this. Three or more decorative grooves 52, 54 may be formed in one floor finishing material 20.

Further, in the first and second embodiments, the floor finishing material 20 is composed of a plate material of 289 mm × 1818 mm, and in the third embodiment, the floor finishing material 20 is composed of a plate material of 303 mm × 1818 mm, but the dimensions of the floor finishing material 20 are not limited to this. , It may be a plate material of any size.

Further, in the double floor structure 10 according to the present invention, the decorative groove 52 is not formed in each floor finishing material 20, and a plurality of floor finishing materials 20, ... A brick joint (horse stepping joint) pattern may be formed on the floor surface formed by 20. Even in such a form, since the support legs 30 are always provided below the four corners of each floor finishing material 20, the plurality of floor finishing materials 20, ..., 20 are provided with the plurality of support legs 30. Even after laying on 30, ..., 30 to construct a double floor, the construction positions of the support legs 30 (four corners of each floor finishing material 20) can be easily recognized.

Further, in each of the above embodiments, the decorative grooves 52 and 54 having at least one end on the long side end edge 20al of the upper surface 20a of the floor finishing material 20 are used as marks for the construction position of the support legs 30. However, the double floor structure 10 according to the present invention is a support leg constructed below the floor finishing material 20 with the decorative grooves 52 and 54 extending parallel to the short side provided on the upper surface 20a of the floor finishing material 20 as marks. It suffices if the position of 30 can be recognized without using a measure, and the decorative grooves 52 and 54 used as markers are not limited to those whose at least one end is on the long side edge 20al of the upper surface 20a of the floor finishing material 20. The decorative groove used as a mark for recognizing the construction position of the support leg 30 is provided, for example, so as to be bridged between a plurality of vertical grooves 53 formed on the upper surface 20a of each floor finishing material 20, and both ends are long. It may not be on the side edge 20al.

Further, as the construction position of the support legs 30, in the first embodiment, the upper surface 20a of each floor finishing material 20 is divided into four equal parts in the long side direction, and in the second and third embodiments, the floor finishing material 20 is constructed. An example in which the upper surface 20a is divided into six equal parts in the long side direction has been described. However, the construction position of the support leg 30 is not limited to this. The support legs 30 may be provided at positions where the upper surface 20a of each floor finishing material 20 is divided into three equal parts in the long side direction, eight equal parts, and other equal parts. Further, the support legs 30 may be provided at unequal pitches.

Further, in each of the above embodiments, the support legs 30 are provided below all the intersections of the decorative grooves 52 and 54 of each floor finishing material 20 and the long side edge 20al, but the construction position of the support legs 30 is provided. Is not limited to this. The support legs 30 may be provided below the intersection of the extension line of at least one decorative groove formed on the upper surface 20a of each floor finishing material 20 and the two long side edge edges 20al.

The present invention is useful for dry double floor structures.

1 Floor slab surface (floor surface)
10 Double floor structure
20 Floor finishing material
21 female fruit
21a groove
21b Lower convex part
21c Upper convex part
21d bottom
22 Yumi
22a convex part
30 Support legs
40 Nail-shaped member
52 Makeup groove
L1 Protruding height of the lower convex portion 21b
L2 Protruding height of the upper convex portion 21c

Claims (6)

A double floor structure including a plurality of support legs erected on the floor surface and a plurality of rectangular floor finishing materials supported by the plurality of support legs and forming the floor surface above the floor surface. And
In the plurality of floor finishing materials, female fruits having grooves are formed at the side ends of two adjacent sides, and male fruits having protrusions that fit into the grooves are formed at the side ends of the other two sides. It is laid on the plurality of support legs in a spliced state in which the convex portion of the male fruit of the other fits into the groove of the female fruit of one of the two adjacent floor finishing materials.
In the female fruit, the lower convex portion protruding laterally from the bottom surface of the groove below the groove has a higher protruding height than the upper convex portion protruding laterally from the bottom surface of the groove above the groove. Formed to be
At least two joints of the floor finishing material are fixed to each of the supporting legs, and one of the two floor finishing materials on which the female fruit is formed is the downward convex. The portion is fixed to the support leg by the adhesive and the nail-shaped member, and the other floor finishing material is fixed to the support leg by the adhesive in the actual joint state.
The support legs have a double floor structure, characterized in that they are provided at least below the four corners of each floor finishing material. In the double floor structure according to claim 1,
At least one decorative groove extending parallel to the short side is formed on the upper surface of each of the floor finishing materials.
The support legs have at least one of the decorative grooves formed on the upper surface of each floor finishing material, or an extension line of at least one decorative groove, and two lengths of the upper surface of each floor finishing material. A double-floor structure characterized in that it is provided below the intersection with the side edge. In the double floor structure according to claim 2,
The support legs shall be provided below the intersections of all the decorative grooves or extension lines of all the decorative grooves formed on the upper surface of each floor finishing material and the two long side edge edges. Double floor structure featuring. In the double floor structure according to claim 2 or 3,
The decorative groove is provided on at least one of a plurality of bisectors that divide the upper surface of each floor finishing material into three equal parts, four equal parts, six equal parts, or eight equal parts in the long side direction. Double floor structure characterized by that. In the double floor structure according to claim 4,
The support leg is a double floor structure characterized in that it is provided below the intersection of all of the plurality of bisectors of each floor finishing material and the two long side edge edges. In the double floor structure according to claim 4 or 5,
In the plurality of floor finishing materials, at least one short side edge of the upper surface of each floor finishing material is arranged in line with the decorative groove of any of the other floor finishing materials adjacent in the short side direction. A double-floor structure characterized by being laid so that it can be laid.

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