JP7603034B2 - Floor structure - Google Patents

Description

The present invention relates to a floor structure that is constructed by laying multiple units.

In recent years, floor structures consisting of multiple units, such as indoor double floors and outdoor deck floors, have become known (see, for example, Patent Document 1). These floor structures generally involve connecting units together via connecting members as described in Document 1, or connecting the side edges of the units with bolts or the like while fitting them together in a notched shape.

However, when using connecting members in the above conventional floor structure, connecting members other than the unit are required, which increases the number of parts and increases costs. In addition, the method of forming a notched side edge of the unit also requires processing the floorboard to form a step, or attaching a plate member along the side edge of the floorboard to form a step, which increases manufacturing costs.

Furthermore, in a floor structure using the connecting members described in the above-mentioned document 1, when a downward load is applied to the boundary between the units, the load is concentrated on the connecting members, and therefore the connecting members are prone to damage in applications where the floor surface is subjected to repeated loads, such as applications where many people walk, or applications where heavy loads are applied to the floor surface, such as applications where heavy objects such as planters are placed on the floor.

Patent No. 3943227

The present invention aims to solve the problems of the conventional technology described above, and in summary, to provide a floor structure that allows units to be connected to each other using a small number of parts and has excellent durability even when repeated or large loads are applied to the floor surface.

As a means for solving the above problem, the inventor of the present invention has adopted a floor structure in which floor units that form a square or rectangular floor surface in a plan view are laid out, the floor units being composed of a plurality of deck materials arranged side by side in the width direction with their lengths aligned, and a bar material that is hung between each of the deck materials with the width direction of the deck materials as the longitudinal direction and attached to the bottom surface of the deck materials to connect each of the deck materials, while providing at least a portion of the plurality of floor units with one or both of a first convex portion formed by protruding the bar material outward in the width direction of the deck material and a second convex portion formed by shifting the deck material outward in the length direction, and one or both of a first recess formed by retracting the bar material inward in the width direction of the deck material and a second recess formed by shifting the deck material inward in the length direction, and a configuration in which the first convex portion or the second convex portion of a given floor unit is placed in the first recess or the second recess of another floor unit that is adjacently placed, and the first convex portion or the second convex portion is fixed to the deck material of the other floor unit to connect the floor units to each other.

The floor units are also provided with at least two bar members, and by arranging each bar member at both ends of the deck material in the longitudinal direction, the floor units can be connected in a row and columns in a plan view.

In addition, in the present invention, at least some of the multiple floor placement units are provided with a third convex portion formed by protruding the bar material outward in the length direction of the deck material and shifting it outward in the width direction of the deck material, and a third concave portion formed by retracting the bar material inward in the length direction of the deck material and shifting it inward in the width direction of the deck material, and the third convex portion of a given floor placement unit is placed in the third concave portion of another floor placement unit arranged diagonally therefrom, and the third convex portion is fixed to the deck material of the other floor placement unit, thereby connecting the floor placement units to each other.

In addition, in the present invention, the plurality of bed units are configured to include a first bed unit having a first convex portion and a first concave portion on two opposing sides and a second convex portion and a second concave portion on the other two opposing sides, a second bed unit having a first convex portion on each of the two opposing sides and a second convex portion and a second concave portion on the other two opposing sides, a third bed unit having a first convex portion and a first concave portion on each of the two opposing sides and a second convex portion on the other two opposing sides, and a fourth bed unit having a first convex portion on each of the two opposing sides and a second convex portion on the other two opposing sides, so that the first convex portion or the second convex portion can be arranged on the outer periphery of the entire floor surface formed by laying out the plurality of bed units.

Furthermore, when the above-mentioned multiple floor units are laid out to form the entire floor surface, and the first or second convex portion is provided on one side of the floor unit that forms the periphery of the entire floor surface, the integrity of the floor surface can be improved by attaching an outer edge material to the first or second convex portion.

Furthermore, for the entire floor surface formed by the above-mentioned multiple floor units, the floor units can be arranged so that the orientation of the deck material of adjacent floor units is aligned in one direction to form a flush-patterned pattern, or the orientation of the deck material of adjacent floor units is changed to form a checkerboard pattern.

The floor structure of the present invention forms convex and concave portions on the side edges using bar materials that connect the deck materials, and allows the convex portion of a given floor unit to be placed in the concave portion of another adjacent floor unit, and the floor units can be connected to each other with screws or the like, eliminating the need for connecting members as used in conventional technology. In addition, the convex and concave portions of the floor units can be formed simply by adjusting the length and attachment position of the bar materials, making the floor units easy to manufacture.

Moreover, the floor structure of the present invention can be supported by the bar material even when a load is applied to the floor surface of the floor unit and to the boundary between the floor units, so there is no need to worry about damage to the connecting members, and it can be used without problems in applications where the floor surface is repeatedly subjected to loads or where a large load is applied to the floor surface. In addition, the floor structure of the present invention can be easily disassembled and assembled, so it can also be used for temporary use at events, etc.

1A and 1B are a plan view and a bottom view showing a floor structure in a first embodiment of the present invention. FIG. 2 is an explanatory exploded view showing a disassembled state of the floor structure in the first embodiment of the present invention. FIG. 2 is a plan view showing the floor placement unit according to the first embodiment of the present invention. 1A and 1B are plan and bottom views showing a modified example of the floor structure in the first embodiment of the present invention. 1A and 1B are plan and bottom views showing a modified example of the floor structure in the first embodiment of the present invention. 1A and 1B are plan and bottom views showing a modified example of the floor structure in the first embodiment of the present invention. FIG. 11 is a plan view showing a floor placement unit in a second embodiment of the present invention. 11A and 11B are plan and bottom views showing a floor structure in a second embodiment of the present invention. FIG. 11 is a plan view showing a modified example of the floor structure in the second embodiment of the present invention.

"First embodiment"
A first embodiment of the present invention will be described with reference to Figures 1 to 6. In the figures, the reference symbol F indicates a floor structure, and the reference symbol U indicates a floor unit. The reference symbol 1 indicates a deck material, the reference symbol 2 indicates a bar material, and the reference symbol 3 indicates an outer edge material.

"Floor structure configuration"
[1] Basic structure The basic structure of the floor structure F of this embodiment will be described. In this embodiment, as shown in Figures 1(a)(b) and 2, a plurality of floor units U that form a square floor surface in a plan view are laid to form the floor structure F. Each floor unit U is composed of a plurality of deck materials 1 arranged in the width direction with their length aligned as shown in Figures 3(a) to 3(d), and a bar material 2 that is hung between each of the deck materials 1 with the width direction of the deck materials 1 as the longitudinal direction. Each bar material 2 is attached to the bottom surface of the deck material 1 as shown in Figures 1(b) and 2 to connect each of the deck materials 1.

3(a) to 3(f) used in this embodiment has, at its outer periphery, one or both of a first convex portion C ₁ formed by protruding the bar material 2 outward in the width direction of the deck material 1, and a second convex portion C ₂ formed by shifting the bar material 2 outward in the length direction of the deck material 1. Furthermore, the floor placing unit U in Figs. 3(a) to 3(f) has, at its outer periphery, one or both of a first recess R ₁ formed by retracting the bar material 2 inward in the width direction of the deck material 1, and a second recess R ₂ formed by shifting the bar material 2 inward in the length direction of the deck material 1.

In the present embodiment, as shown in Fig. 2, the first convex portion _C1 or the second convex portion _C2 of the floor unit U is placed in the first concave portion _R1 or the second concave portion _R2 of another floor unit U adjacent to the floor unit U, and the first convex portion _C1 or the second convex portion _C2 is fixed to the deck material 1 of the other floor unit U, thereby connecting the floor units U and U in the vertical and horizontal directions in a plan view. This allows the floor units U and U to be connected by the bar material 2 that connects the deck material 1. The specific contents of each floor unit U and the connecting method will be described later.

Furthermore, in this embodiment, when the floor units U are laid out to form the entire floor surface, a first convex portion _C1 or a second convex portion _C2 is provided on one side of the floor units U that form the periphery of the entire floor surface as shown in Fig. 1(b). Then, as shown in Fig. 1(a) and Fig. 2, an outer edge material 3 is attached to the first convex portion _C1 and the second convex portion _C2 to hide the end of the deck material 1 and surround the periphery of the floor surface with the outer edge material 3, thereby forming the outer frame of the floor structure F.

[2] Bed Unit [2-1] First Bed Unit The square-shaped first bed unit _U1 shown in Fig. 3(a) has a first convex portion _C1 and a first concave portion _R1 on two opposing sides (left edge and right edge) in a plan view, and a second convex portion _C2 and a second concave portion _R2 on the other opposing two sides (upper edge and lower edge). Furthermore, the upper left corner of the first bed unit _U1 has a third convex portion C3 formed by protruding the bar material 2 outward in the length direction of the deck material 1 and shifting it outward in the width direction of the deck material ₁ , and the lower right corner has a third concave portion _R3 formed by retracting the bar material 2 inward in the length direction of the deck material 1 and shifting it inward in the width direction of the deck material 1. Note that the above-mentioned first convex portion _C1 , second convex portion _C2 , and third convex portion _C3 , as well as the first recess _R1 , second recess _R2 , and third recess _R3 are names of areas (ranges) centered on the part surrounded by dotted lines in the drawing, and one or more convex portions are formed on the same bar material 2.

The first bed unit _U1 is used for the four upper left bed units U among the nine bed units U shown in Fig. 1 and Fig. 2. As shown in Fig. 2, the first convex part _C1 of the first bed unit _U1 is arranged in the first concave part _R1 of the first bed unit _U1 to perform horizontal connection, and the second convex part _C2 of another second bed unit _U2 is arranged in the second concave part _R2 of the first bed unit _U1 to perform vertical connection. For diagonal connection, the third convex part _C3 of the first bed unit _U1 is arranged in the third concave part _R3 of another first bed unit _U1 arranged diagonally, and this third convex part _C3 is fixed to the deck material 1 of the other first bed unit _U1 to connect the bed units _U1 and _U1 to each other.

Of the four first bed units _U1 used in the floor structure F, the three first bed units _U1 located on the left and upper sides in Figure 2 have a first convex portion _C1 and a second convex portion _C2 formed on one side on the left and upper sides that form the outer periphery of the entire floor surface, and an outer edge material 3 is attached to the upper surface of each of these.

[2-2] Second Bed Unit The square-shaped second bed unit _U2 shown in Fig. 3(b) has a first convex portion _C1 on each of two opposing sides (left edge and right edge), and a second convex portion _C2 and a second concave portion _R2 on the other two opposing sides (upper edge and lower edge). In addition, a third convex portion _C3 is provided on each of the upper left and upper right corners of the second bed unit _U2 . This second bed unit _U2 is used in the upper right two of the nine bed units U, U... shown in Figs. 1 and 2. As shown in FIG. 2, the first convex portion _C1 of the second bed unit _U2 is placed in the first recess _R1 of the first bed unit _U1 to connect them in the horizontal direction, the second convex portion _C2 of another second bed unit _U2 is placed in the second recess _R2 of the second bed unit _U2 to connect them in the vertical direction, and the third convex portion _C3 of the second bed unit _U2 is placed in the third recess _R3 of the first bed unit _U1 to connect them in the diagonal direction.

The two second floor units _U2 in Figure 2 used in the above-mentioned floor structure F have a first convex portion _C1 and a second convex portion _C2 formed on the right and upper sides that form the outer periphery of the entire floor surface, and outer edge materials 3, 3... are attached to the upper surfaces of these.

[2-3] Third Bed Unit The square-shaped third bed unit _U3 shown in Fig. 3(c) has a first convex portion _C1 and a first concave portion _R1 on two opposing sides (left edge and right edge), and a second convex portion _C2 on the other two opposing sides (upper edge and lower edge). Furthermore, a third convex portion _C3 is provided on each of the upper left and lower left corners of the third bed unit _U3 . This third bed unit _U3 is used in the two lower left corners of the nine bed units U shown in Figs. 1 and 2. As shown in FIG. 2, the second convex portion C2 of the third bed unit _U3 is placed in the second recess _R2 of the first bed unit _U1 to connect them in the vertical direction, the first convex portion _C1 of another third bed unit _U3 is placed in the first recess _R1 of the third bed unit _U3 to connect _them in the horizontal direction, and the third convex portion _C3 of the third bed unit _U3 is placed in the third recess _R3 of the first bed unit _U1 to connect them in the diagonal direction.

The two third floor units _U3 in Figure 2 used in the above-mentioned floor structure F have a first convex portion _C1 and a second convex portion _C2 formed on the left and lower sides that form the outer periphery of the entire floor surface, and an outer edge material 3 is attached to the upper surfaces of these.

[2-4] Fourth Bed Unit The square-shaped fourth bed unit _U4 shown in Fig. 3(d) has a first convex portion _C1 on each of two opposing sides (left edge and right edge), and a second convex portion _C2 on each of the other two opposing sides (upper edge and lower edge). Furthermore, a third convex portion _C3 is provided on each of the left, right, upper and lower corners of the fourth bed unit _U4 . This fourth bed unit _U4 is used as the lower right one of the nine bed units U shown in Figs. 1 and 2. As shown in FIG. 2, the second convex portion _C2 of the fourth bed unit _U4 is placed in the second recess _R2 of the second bed unit _U2 to connect them in the vertical direction, the first convex portion _C1 of the fourth bed unit _U4 is placed in the first recess _R1 of the third bed unit _U3 to connect them in the horizontal direction, and the third convex portion _C3 of the fourth bed unit _U4 is placed in the third recess _R3 of the first bed unit _U1 to connect them in the diagonal direction.

The third floor unit _U3 in Figure 2 used in the above-mentioned floor structure F has a first convex portion _C1 and a second convex portion _C2 formed on the right and lower sides that form the outer periphery of the entire floor surface, and an outer edge material 3 is attached to the upper surfaces of these.

[3] Floor structure with flush-laying pattern By arranging the above-mentioned four types of first floor unit _U1 , second floor unit _U2 , third floor unit _U3 and fourth floor unit _U4 in combination, a floor structure F with flush-laying pattern in which the deck material is aligned in one direction as shown in Figure 1 (a) (b) can be constructed. In addition, as shown in Figure 1 (b), the bar material 2 of each floor unit U is aligned in a row, which has the effect of a joist, and even if a load is applied to the floor surface during use, the deck material 1 between the bar materials 2 and 2 bends, dispersing and absorbing the load.

[4] Modifications of the Bed Unit [4-1] Fifth Bed Unit The square-shaped fifth bed unit _U5 shown in Fig. 3(e) has a first convex part _C1 and a first concave part _R1 on two opposing sides (left edge and right edge), and a second convex part _C2 and a second concave part _R2 on the other opposing two sides (upper edge and lower edge). Furthermore, a third convex part _C3 is provided at the lower left corner of the fifth bed unit _U5 , and a third concave part _R3 is provided at the upper right corner. The fifth bed unit _U5 is a vertically symmetrical shape of the first bed unit _U1 in Fig. 3(a).

[4-2] Sixth Bed Unit The square-shaped sixth bed unit _U6 shown in Fig. 3(f) has both a first convex part _C1 (lower left) and a first concave part _R1 (upper left) on one side (left edge) of two opposing sides (left edge and right edge), and a first convex part _C1 (upper right and lower right) on the other side (right edge). In addition, a second convex part _C2 is provided on each of the other two opposing sides (upper edge and lower edge), and a third convex part _C3 is provided at each of the lower left, upper right, and lower right corners of the sixth bed unit _U6 .

[5] Modifications to the floor structure [5-1] Square-shaped checkered floor structure By arranging the above-mentioned first floor unit _U1 , second floor unit _U2 , third floor unit _U3, and fifth floor unit _U5 in combination, a floor structure F with a checkered pattern in which the deck material orientations are alternately different as shown in Figures 4(a) and (b) can be constructed. Also, as shown in Figures 4(a) and (b), the bar materials 2 of each floor unit U are arranged in a square or U-shape to provide the effect of a joist or base, and even if a load is applied to the floor surface during use, the deck material 1 between the bar materials 2 and 2 bends to distribute and absorb the load.

[5-2] Cross-shaped floor structure with a flush-fitting shape By combining and arranging the second floor unit _U2 , the third floor unit _U3 , the fourth floor unit _U4 , the fifth floor unit _U5 and the sixth floor unit _U6 , a cross-shaped floor structure F shown in Fig. 5(a)(b) can be formed. This floor structure F can also be formed into a flush-fitting pattern in which the deck material 1 is oriented in one direction, and the bar material 2 of the floor unit U is arranged in a row to provide a joist effect. The cross-shaped outer frame of the floor structure F can be formed by providing a first convex part _C1 or a second convex part _C2 on one side of the floor unit U that forms the periphery of the entire floor surface and attaching an outer edge material 3.

[5-3] Cross-shaped checkered floor structure By combining and arranging the above-mentioned first floor unit _U1 , second floor unit _U2 , third floor unit _U3 , fourth floor unit _U4 , fifth floor unit _U5 and sixth floor unit _U6 ', a cross-shaped floor structure F shown in Figures 6(a) and (b) can be constructed. The sixth floor unit _U6 ' used here is a vertically symmetrical shape of the sixth floor unit _U6 shown in Figure 3(e). In addition, this floor structure F can be formed into a checkered pattern in which the orientation of the deck material 1 is alternately different, and the bar material 2 of each floor unit U is arranged in a square or U-shape to provide a pedestal effect. Furthermore, a cross-shaped outer frame of the floor structure F can be formed by attaching an outer edge material 3 to one side of the floor unit U that forms the periphery of the entire floor surface.

[5-4] Other Modifications The patterns and shapes of the floor structure F may be other than those described above, for example, a pattern that partially combines a flush-patterned pattern and a checkered pattern. The overall shape of the floor surface of the floor structure F may be a square, rectangular, or cross shape in plan view, or may be a complex shape that matches the shape of the construction site.

[6] Deck Material Next, each component of the floor unit U will be described. First, regarding the material of the deck material 1, although in this embodiment, a wooden plastic board is used, other plastic materials (e.g., polypropylene, ABS resin, polyvinyl chloride resin, etc., either alone or in combination), wood, or metal materials (e.g., aluminum, stainless steel, etc.) can also be used as long as they are general materials used as outdoor or indoor floor materials, and are not particularly limited.

Regarding the shape of the deck material 1, tongue and groove sections (convex ridge sections) and tenon sections (concave groove sections) for connecting the deck materials 1 arranged in the width direction can be provided on the left and right side edges. In this embodiment, tenon sections are formed on both sides and the deck materials 1 are connected to each other by tongue and groove joints. Regarding the width dimension of the deck material 1, in this embodiment, four sheets are arranged to form the floor surface of the floor unit U, but the number of sheets arranged can be reduced by increasing the width, and conversely, the number of sheets arranged can be increased by decreasing the width.

[7] Bar material In this embodiment, aluminum square pipes are used as the material for the bar material 2, but other metal materials or plastic materials can be used as long as they have a certain rigidity. The shape of the bar material 2 is not particularly limited as long as it is in the form of a plate or rod, and a cushioning material can be provided on the underside of the bar material 2 to form a ground contact surface. In this embodiment, two bar materials 2 are used for one floor unit U, and each bar material 2 is arranged on both ends of the deck material 1 in the longitudinal direction, but three or more bar materials 3 can be used (described in the second embodiment).

In this embodiment, the bar material 2 and the deck material 1 are fixed together with screws, but they can also be fixed together with other fixing means, such as bolting, adhesion, welding, uneven fitting, connecting members, etc. Also, in this embodiment, the deck materials 1-1 and the bar material 2 on both sides of the floor unit U are fixed together with screws, but all of the deck materials 1 and bar materials 2 can also be fixed together with screws.

[8] Outer edge material In this embodiment, the outer edge material 3 is made of the same wood plastic rod material as the deck material 1, but other plastic materials or metal materials can be used, and materials different from the deck material 1 can also be used. In addition, in this embodiment, the outer edge material 3 has a square cross section, but a circular cross section or an L-shaped cross section can also be used. In this embodiment, the outer edge material 3 is attached to each floor unit U individually, but after the floor structure F is constructed, a long outer edge material 3 can be attached across multiple floor units U.

[9] Connecting means between floor placement units and outer edge material With regard to the connecting means between the adjacent floor placement units U and U, in this embodiment, screws are used to facilitate disassembly and assembly of the floor placement unit U. Specifically, the floor placement units U and U are connected to each other by passing a screw material through the through holes formed in the first convex portion C ₁ , the second convex portion C ₂ , and the third convex portion C ₃ of the bar material ₂ , and screwing the screw material into the female screw portion formed in the first concave portion R 1 , the second concave portion R ₂ , and the third concave portion R ₃ of the deck material 1. Also, with regard to the connecting means of the outer edge material 3, a screw material is passed through the through holes formed in the first convex portion C ₁ , the second convex portion C ₂ , and the third convex portion C ₃ of the bar material 2, and screwing the screw material into the female screw portion formed in the outer edge material 3, so that the outer edge material can be attached. In addition, in this embodiment, upward protrusions are formed on the first convex portion _C1 , the second convex portion _C2 , and the third convex portion _C3 , and these protrusions are fitted into the corresponding holes of the first recess _R1 , the second recess _R2 , and the third recess _R3 , or the holes of the outer edge material 3, so that the two can be positioned and connected.

"Second embodiment"
[1] Rectangular bed unit [1-1] Seventh bed unit The rectangular seventh bed unit _U7 shown in Fig. 7(a) has a first convex portion _C1 and a first concave portion R1 on two opposing sides (left edge and right edge), and a second convex portion _C2 and a second concave portion _R2 on the other two opposing sides (upper edge and lower edge). In addition, the seventh bed unit _U7 has a third convex portion _C3 on the upper left corner and a third concave portion _R3 on the lower right corner. This seventh bed unit _U7 not only has bar material 2 on both ends of the deck material 1 in the length direction, but also has a bar material 2 arranged at the middle position of the deck material 1 in the length direction, and _the bar material 2 at this middle position forms a first convex portion _C1 and a first concave portion _R1 similar to those at both ends at the middle position of the seventh bed unit _U7 .

[1-2] Eighth Bed Unit The eighth bed unit _U8 , which is rectangular in shape and shown in Fig. 7(b), has a first convex portion _C1 on each of two opposing sides (left edge and right edge), and a second convex portion _C2 and a second concave portion R2 on the other two opposing sides (upper edge and lower edge). Furthermore, a third convex portion _C3 is provided at each of the upper left and upper right corners of the eighth bed unit _U8 . This eighth bed unit _U8 also has a bar material ₂ disposed at the middle position in the longitudinal direction of the deck material 1, and the bar material 2 at this middle position forms a first convex portion _C1 similar to both ends at the middle position of the eighth bed unit _U8 .

[1-3] Ninth Bed Unit The rectangular ninth bed unit _U9 shown in Fig. 7(c) has a first convex portion _C1 and a first concave portion _R1 on each of two opposing sides (left edge and right edge), and a second convex portion _C2 on each of the other two opposing sides (upper edge and lower edge). Furthermore, a third convex portion _C3 is provided at each of the upper left and lower left corners of the ninth bed unit _U9 . This ninth bed unit _U9 also has a bar material 2 disposed at the middle position in the length direction of the deck material 1, and the bar material 2 at this middle position forms a first convex portion _C1 and a first concave portion _R1 similar to those at both ends at the middle position of the ninth bed unit _U9 .

[1-4] Tenth Placement Floor Unit The rectangular tenth placement floor unit _U10 shown in Fig. 7(d) has a first convex portion _C1 on each of two opposing sides (left edge and right edge), and a second convex portion _C2 on each of the other two opposing sides (upper edge and lower edge). Furthermore, a third convex portion _C3 is provided at each of the left, right, upper and lower corners of the tenth placement floor unit _U10 . This tenth placement floor unit _U10 also has a bar material 2 disposed at the midpoint of the length of the deck material 1, and the bar material 2 at this midpoint forms a first convex portion _C1 similar to both ends at the midpoint of the tenth placement floor unit _U10 .

[2] Brick-patterned floor structure By combining and arranging the first floor unit _U1 , the third floor unit _U3, and the fifth floor unit _U5 of the first embodiment, and the seventh floor unit _U7 , the eighth floor unit _U8 , and the ninth floor unit _U9 , a brick-patterned floor structure F shown in Fig. 8(a)(b) can be constructed. Also, as shown in Fig. 8(b), the bar materials 2 of each floor unit U are arranged in a row to provide the effect of a joist, and even if a load is applied to the floor surface during use, the deck material 1 between the bar materials 2 and 2 bends to distribute and absorb the load. In addition, by using a rectangular floor unit U, the number of bar materials 2 used and the number of connection operations can be reduced compared to using a square floor unit U.

[3] Modification of the brick-patterned floor structure In this embodiment, a floor structure F with a flush-patterned pattern is constructed, but by combining and arranging the second floor unit _U2 , the third floor unit _U3 , the fourth floor unit _U4 , and the fifth floor unit _U5 of the first embodiment and the seventh floor unit _U7 , the eighth floor unit _U8 , and the tenth floor unit _U10 , a floor structure F with a checkered pattern as shown in Fig. 9(a) can be constructed. In addition, by combining and arranging the first floor unit _U1 to the tenth floor unit _U10, a floor structure F with a complex block pattern as shown in Fig. 9(b) can be constructed.

1 Deck material 2 Bar material 3 Outer edge material U Floor unit U ₁ First floor unit U ₂ Second floor unit U ₃ Third floor unit U ₄ Fourth floor unit U ₅ Fifth floor unit U ₆ Sixth floor unit U _{7 Seventh floor unit U 8 Eighth} floor unit U ₉ Ninth floor unit U ₁₀ Tenth floor unit C ₁ First convex part C ₂ Second convex part C ₃ Third convex part R ₁ First recess R ₂ Second recess R ₃ Third recess F Floor structure

Claims (6)

In a floor structure constructed by laying floor units that form a square or rectangular floor surface in a plan view,
The floor unit is composed of a plurality of deck materials arranged side by side in the width direction with their lengths aligned, and a bar material that is hung between each of the deck materials with the width direction of the deck materials as the longitudinal direction and is attached to the bottom surface of the deck materials to connect each of the deck materials,
A floor structure in which at least some of the multiple floor units are provided with one or both of a first convex portion formed by protruding the bar material outward in the width direction of the deck material and a second convex portion formed by shifting it outward in the length direction of the deck material, and one or both of a first recess formed by retracting the bar material inward in the width direction of the deck material and a second recess formed by shifting it inward in the length direction of the deck material, and the first convex portion or second convex portion of a specific floor unit is placed in the first recess or second recess of another floor unit arranged adjacently, and the first convex portion or second convex portion is fixed to the deck material of the other floor unit, thereby connecting the floor units to each other. The floor structure according to claim 1, wherein the floor unit comprises at least two or more bar members, each of which is disposed on both ends of the deck member in the longitudinal direction. The floor structure according to claim 1 or 2, wherein at least some of the plurality of floor units are provided with a third convex portion formed by protruding the bar material outward in the length direction of the deck material and shifting it outward in the width direction of the deck material, and a third concave portion formed by retracting the bar material inward in the length direction of the deck material and shifting it inward in the width direction of the deck material, and the third convex portion of a given floor unit is placed in the third concave portion of another floor unit arranged diagonally therefrom, and the third convex portion is fixed to the deck material of the other floor unit, thereby connecting the floor units to each other. The floor structure according to any one of claims 1 to 3, wherein the plurality of floor units include a first floor unit having a first convex portion and a first concave portion on two opposing sides and a second convex portion and a second concave portion on the other two opposing sides, a second floor unit having a first convex portion on each of the two opposing sides and a second convex portion and a second concave portion on the other two opposing sides, a third floor unit having a first convex portion and a first concave portion on each of the two opposing sides and a second convex portion on the other two opposing sides, and a fourth floor unit having a first convex portion on each of the two opposing sides and a second convex portion on the other two opposing sides. The floor structure according to any one of claims 1 to 4, in which the entire floor surface is formed by laying the plurality of floor units, the first convex portion or the second convex portion is provided on one side of the floor unit that forms the periphery of the entire floor surface, and an outer edge material is attached to the first convex portion or the second convex portion. The floor structure according to any one of claims 1 to 5, wherein the floor units are arranged so that the deck materials of adjacent floor units are oriented in one direction to form a flush-patterned pattern on the entire floor surface formed by the plurality of floor units, or the deck materials of adjacent floor units are oriented in different directions to form a checkerboard pattern.