JP7499509B2 - Flooring and Construction - Google Patents

Description

This invention relates to floor materials such as gratings with multiple long holes formed in the treads, and floor structures using such floor materials.

When floor structures such as floors, passageways, and steps are formed at a specified height in factories, laboratories, warehouses, etc., they may be formed by laying a large number of floor materials such as lattice-shaped metal gratings with many long holes in the treads side by side (Patent Document 1).

This type of floor structure places emphasis on safety, strength, ease of construction, etc., so there is a risk that it may be somewhat inferior in terms of design and functionality after construction.

JP 2011-184862 A

Under these circumstances, in the technical field of floor structures using floor materials such as gratings, there is a strong demand for the development of floor structures that are convenient and can improve design and functionality.

This invention was made in consideration of the above problems, and aims to provide flooring and floor structures that have improved design and functionality, and are highly convenient.

To solve the above problems, the present invention provides the following:

[1] A flooring material in which a tread has a plurality of long holes arranged in parallel, and a rib is formed on the outer peripheral edge of each long hole so that the rib protrudes to the back side,
A hole cover for closing the long hole is provided,
The hole cover has a fitting portion provided on a back surface side thereof so as to protrude downward, and a hook provided at a lower end of the fitting portion,
The hole cover is configured to be attachable to the long hole by fitting the fitting portion into the long hole and hooking the hook to the rib by snap-fitting,
A flooring material characterized in that a display pattern that is visible to people in the vicinity is formed by the hole cover attached to any one of the plurality of long holes.

[2] The rib includes a long side rib arranged corresponding to the long side portion of the long hole and having an insertion hole, and a short side rib arranged corresponding to the short side portion,
The hooking claws include long side hooking claws provided corresponding to the long side portions and short side hooking claws provided corresponding to the short side portions,
The flooring material described in the preceding paragraph 1, wherein the hole cover is attached to the long hole by inserting and hanging the long side hook claw into the insertion hole of the long side rib and hanging the short side hook claw on the lower end of the short side rib.

[3] The flooring material according to paragraph 1 or 2 above, in which an opening is provided in the hole cover and a cap is attached to the opening.

[4] A floor structure characterized by being constructed by laying multiple flooring materials described in any one of the preceding paragraphs 1 to 3 side by side.

[5] A fixing bracket for fixing the flooring material to a beam material is provided,
the fixing metal fitting includes a first metal fitting, a second metal fitting, and a bolt, each of which can be inserted into the long hole;
The first fitting is engaged with the floor material, and the first fitting and the second fitting are connected and fixed by the bolt in a manner to sandwich the beam material, thereby fixing the floor material to the beam material,
5. A floor structure as described in paragraph 4, wherein the fixing bracket is positioned lower than the surface of the tread when the floor material is fixed to the beam.

According to the flooring material of invention [1], the display pattern is formed by the hole covers attached to the long holes, so the display pattern by the hole covers can form information such as letters and symbols that are necessary for people in the vicinity, as well as attractive patterns, improving functionality and design and providing excellent convenience.

The flooring material of invention [2] allows the hole cover to be attached more securely to the long hole because the hook piece of the hole cover is hooked to a specified position on the rib of the long hole.

The flooring material of invention [3] has a cap attached to the opening of the hole cover, so by imparting properties such as phosphorescence and slip resistance to the cap, it is possible to further improve the functionality and design.

The floor structure of invention [4] is constructed using the flooring material of the above invention, and therefore can achieve the same effects as above.

According to the floor structure of the invention [5], the fixing metal fittings that fix the flooring material to the beams are positioned lower than the top surface (surface) of the tread, so hole covers can be securely attached to the long holes corresponding to the positions where the fixing metal fittings are attached. Furthermore, because the components of the fixing metal fittings can be inserted into the long holes of the tread, fixing the flooring material to the beams can be done from only one direction, from the top surface of the tread, further improving workability.

FIG. 1 is an exploded perspective view showing an end portion of a flooring material according to an embodiment of the present invention. FIG. 2 is a cross-sectional view showing the flooring material of the embodiment. FIG. 3 is an exploded cross-sectional view of the flooring material according to the embodiment. FIG. 4 is a cross-sectional view taken along line D4-D4 in FIG. FIG. 5 is a perspective view showing a hole cover applied to the flooring material of the embodiment. FIG. 6 is a back view showing the hole cover of the embodiment. FIG. 7 is a cross-sectional view taken along line D7-D7 in FIG. FIG. 8 is a side view of an end portion of the lid member according to the embodiment. FIG. 9 is a perspective view showing a floor structure constructed using the embodiment. FIG. 10A is a perspective view illustrating a fixing structure of a floor material to a beam material in an embodiment. FIG. 10B is an exploded perspective view of a fixing metal fitting used in the fixing structure of FIG. 10A. FIG. 10C is a perspective view showing the fixing structure of FIG. 10A. FIG. 10D is a cross-sectional view taken along line Dd-Dd in FIG. 10C. FIG. 10E is a cross-sectional view taken along line De-De in FIG. 10C. FIG. 11 is a cross-sectional view showing a flooring material according to a modified example of the present invention. FIG. 12 is a cross-sectional view showing a hole cover applied to a floor material of a modified example.

Figure 1 is an exploded perspective view of an end portion of a flooring material according to an embodiment of the present invention, Figure 2 is a cross-sectional view of the flooring material according to the embodiment, Figure 3 is an exploded cross-sectional view of the flooring material according to the embodiment, and Figure 4 is a cross-sectional view taken along line D4-D4 in Figure 2.

As shown in these figures, in this embodiment, the flooring 1 is composed of a lip groove material (flooring body) 16 made of steel plate having flanges with lips 15 at both ends (side edges) of the width of the tread 10. The plate-like tread 10 has a number of oblong or elliptical (bamboo leaf shaped) long holes 11 that extend in the width direction of the tread 10 and are arranged in parallel (horizontal) along the length.

Ribs 12a, 12b that protrude toward the back side are integrally formed on the periphery of the long hole 11 in the tread 10. The ribs 12a, 12b include a long side rib 12a that is provided corresponding to both sides (long side portions) of the long hole 11, and a short side rib 12b that is arc-shaped in plan view that is provided corresponding to both ends (short side portions) of the long hole 11. The long side rib 12a and the short side rib 12b are formed continuously, and the long side rib 12a is set to protrude less toward the back side than the short side rib 12b.

The long side ribs 12a on both sides have three slit-shaped insertion holes 13 that extend in the long side direction and are arranged in a vertical row along the long side.

As shown in Figure 9, flooring materials 1 with the above configuration are laid in parallel on beams 2, and each flooring material 1 is fixed to the beams 2 with fixing brackets 3 (described below), forming the basic floor structure.

Here, we will explain the structure for fixing the flooring 1 to the beam 2 in this embodiment. As shown in Figures 10A to 10E, the flooring 1 is fixed to the beam 2 via fixing brackets 3.

First, the lengthwise (longitudinal) opening dimension of the long hole 11 in the flooring material 1 is "P1", the widthwise (short) opening dimension of the long hole 11 is "P2", and the widthwise (height) opening dimension of the insertion hole 13 is "P3". Note that the opposing insertion holes 13, 13 between the long side ribs 12a, 12a of the flooring material 1 are formed with their positions shifted in the lengthwise direction of the long hole 11.

The beam material 2 is composed of H-shaped steel or I-shaped steel having a flange 21 on the web 20, and the floor material 1 of this embodiment is installed on the flange 1.

The fixing bracket 3 includes an upper bracket (first bracket) 30 that engages with the floor material 1, a lower bracket (second bracket) 40 that engages with the beam material 2, and a bolt 50 that connects the upper bracket 30 and the lower bracket 40.

The upper metal fitting 30 has an oval insertion plate 31, both ends of which are inserted into the insertion holes 13 of the flooring material 1, and a restricting plate 32, which contacts the side of the lower metal fitting 40 to regulate the position of the lower metal fitting 40 relative to the upper metal fitting 30 and whose lower end abuts against the beam material 2 to regulate the distance between the insertion plate 31 and the lower metal fitting 40; the insertion plate 31 and the restricting plate 32 are integrally formed via the neck portion 36.

A circular recess 33 into which the head of the bolt 50 fits is formed by half punching in the center of the insertion plate 31, and a bolt insertion hole 34a is drilled in the center of this circular recess 33. In addition, in the arc portions at both ends of the insertion plate 31, a thin-walled portion 35 is formed in the right area when viewed from above by crushing, where the plate thickness is reduced.

The restricting plate 32 has a substantially rectangular shape in side view, and is formed integrally with the insert plate 31 via a neck portion 36 that is bent at a right angle from the edge of the straight portion of the insert plate 31. The restricting plate 32 has both sides of the neck portion 36 at the upper end bent toward the lower metal fitting 40 to form a stopper 37 that restricts the upper limit position of the lower metal fitting 40, and the center of the lower end is bent in the same direction as the stopper 37 to form a backing plate 38. The protruding dimension of the backing plate 38 from the restricting plate 32 is set to a dimension that does not exceed the widthwise opening dimension P2 of the long hole 11 of the flooring 1, and allows the bolt insertion hole 34b to be formed on the axis of the bolt insertion hole 34a of the insert plate 31. In addition, the lower end of one side of the backing plate 38 of the restricting plate 32 is cut in a sawtooth shape to form a notch 39. The tip (lower end) of the notch 39 of the restricting plate 32 is set at approximately the same height as the lower surface of the backing plate 38, and the lower part of the side of the restricting plate 32 that does not have the notch 39 is cut away.

When viewed from above, the upper fitting 30 has a length dimension of the insertion plate 31 of "Q1" and a width dimension of "Q2". The length dimension of the regulating plate 32 is "Q3", which is larger than the length dimension "Q1" of the insertion plate 31. In addition, since the regulating plate 32 protrudes from the width direction (short side) of the insertion plate 31 by the plate thickness, the width direction (short side) dimension Q4 of the upper fitting 30 is larger than the width direction dimension Q2 of the insertion plate 31. Therefore, the top surface dimension of the upper fitting 30 is length direction Q3 x width direction Q4.

The upper fitting 30 is made by cutting a metal plate with a thickness of Q5 into a specified outline and bending the insertion plate 31, stopper 37, and backing plate 38, and the thickness of the thin-walled portion 35 of the insertion plate 31 is thinner than the thickness Q5.

The lower metal fitting 40 is a member formed in a U-shape in side view by connecting a parallel upper edge portion 41 and a lower edge portion 42 that is shorter than the upper edge portion 41 at the base end, and an insertion space 48 is formed between the upper edge portion 41 and the lower edge portion 42 into which the flange 21 of the beam material 2 is inserted. The upper edge portion 41 is formed with two screw holes 43a, 43b along the length direction that screw into the bolt 50. Of the two screw holes 43a, 43b, one screw hole 43b is formed approximately in the center of the length direction of the upper edge portion 41, and the other screw hole 43a is formed in a position closer to the base end.

The lower fitting 40 is made by bending a metal channel material with a U-shaped cross section, with flanges 45 rising from both ends of the web 44, into a U-shape so that the web 44 is located on the outside and the flanges 45 are located on the inside, and two screw holes 43a, 43b are formed in the web 44. In addition, the upper end of the flange 45 at the tip of the lower side 42 is cut out in a sawtooth shape to form a notch 47. The notch 47 corresponds to the protrusion of the lower side 42.

When viewed from above, the lower metal fitting 40 has a length dimension of "R1" and a width dimension (short side dimension) of "R2." Since the upper side portion 41 is longer than the lower side portion 42, the length dimension of the upper side portion 41 is equal to the length dimension "R1" of the lower metal fitting 40.

The fixing bracket 3 is assembled by attaching a spring 51 to the bolt 50 inserted into the bolt insertion hole 34a of the insertion plate 31 of the upper bracket 30, arranging the upper side 41 of the lower bracket 40 between the stopper 37 and the backing plate 38, and abutting the side of the lower bracket 40 against the regulating plate 32, screwing the bolt 50 into one of the screw holes 43a, 43b of the lower bracket 40, and inserting it into the bolt insertion hole 34b of the backing plate 38, so that the backing plate 38 of the upper bracket 30 is inserted under the upper side 41 of the lower bracket 40. The screw holes 43a, 43b of the lower bracket 40 to be screwed can be appropriately selected according to the positional relationship between the long hole 11 of the tread 10 and the flange 21 so that the flange 21 of the beam material 2 of the lower bracket 40 can be sandwiched. In this assembled state, the upper bracket 30 and the lower bracket 40 maintain an assembly posture in which the insertion plate 31 of the upper bracket 30 and the lower bracket 40 are parallel due to the elastic restoring force of the spring 51.

When viewed from above, the assembled fixing bracket 3 has a length dimension equal to the length dimension R1 of the lower bracket 40, and a width dimension equal to the width dimension Q4 of the upper bracket 30.

The dimensions of each part of the fixing bracket 3 are set to satisfy the following size relationships with the dimensions of each part of the floor material 1 and beam material 2.

The lengthwise dimension R1 of the fixing bracket 3 is set smaller than the lengthwise opening dimension P1 of the long hole 11 of the tread 10 of the flooring 1, and larger than the widthwise opening dimension P2. The widthwise dimension Q4 of the fixing bracket 3 is set smaller than the widthwise opening dimension P2 of the long hole 11. In addition, the lengthwise dimension Q1 of the insertion plate 31 of the fixing bracket 3 is set larger than the widthwise opening dimension P2 of the long hole 11, and the plate thickness Q5 of the insertion plate 31 is set smaller than the widthwise (short) opening dimension P3 of the insertion hole 13 of the long side rib 12a.

The height of the upper fitting 30 is set by adjusting the height of the regulating plate 32 so that it corresponds to the vertical distance from the insertion hole 13 of the flooring material 1 to the bottom surface of the flooring material 1.

In addition, when the backing plate 38 of the upper fitting 30 is in contact with the underside of the upper edge 41 of the lower fitting 40, the vertical distance R3 from the underside of the backing plate 38 to the tip of the notch 47 of the lower edge 42 of the fixing bracket 3 is set to a dimension that allows the flange 21 of the beam material 2 to be inserted.

Using the fixing bracket 3 of this configuration, the floor material 1 is fixed to the beam material 2 in the following procedure.

That is, the flooring 1 is placed across the beam 2 so that the length of the beam 2 intersects with the length of the flooring 1. The fixing bracket 3 is assembled as described above by assembling the upper bracket 30, the lower bracket 40, the bolt 50, and the spring 51. At this time, the bolt 50 is appropriately tightened to adjust the distance from the insertion plate 31 of the upper bracket 30 to the insertion space 48 of the lower bracket 40 to be approximately equal to the distance from the insertion hole 13 of the flooring 1 to the flange 21 of the beam 2.

Next, as shown in Figure 10A, the length of the fixing bracket 3 is aligned with the length of the long hole 11 of the tread 10 of the flooring 1, and the fixing bracket 3 is inserted into the long hole 11 from the top side of the tread 10. Since the planar dimensions Q3 x Q4 of the fixing bracket 3 are smaller than the opening dimensions P1 x P2 of the long hole 11, the entire fixing bracket 3 can be easily inserted into the long hole 11.

Next, as shown in Figures 10C to 10E, the inserted fixing bracket 3 is rotated 90° clockwise in a plane parallel to the tread 10. The direction of rotation is from the thin-walled portion 35 of the insertion plate 31 toward the insertion hole 13 of the long side rib 12a. This rotation of the fixing bracket 3 causes the length direction of the long hole 11 to be perpendicular to the length direction of the fixing bracket 3, and both ends of the insertion plate 31 of the upper bracket 30 are inserted into the insertion hole 13 of the opposing long side rib 12a, and the flange 21 of the beam material 2 is inserted into the insertion space 48 of the lower bracket 40, and the flange 21 is sandwiched between the upper side portion 41 of the regulating plate 32 and the lower bracket 40 and the lower side portion 42 of the lower bracket 40. The upper bracket 30 and the lower bracket 40 are kept parallel by the spring 51, so that the flange 21 can be smoothly inserted into the insertion space 48. At this time, the tip side of the lower bracket 40 may be slightly raised and tilted to insert the flange 21. At this stage, the bolt 50 has not been tightened and the insertion plate 31 is loosely inserted into the insertion hole 13, so the lower metal fitting 40 can be tilted. However, the angle of inclination of the lower metal fitting 40 is restricted by the stopper 37.

The opposing insertion holes 13 are offset in position to match the rotation direction of the fixing bracket 3, and the insertion plate 31 is inserted into the insertion hole 13 from the thin-walled portion 35, so the insertion plate 31 can be inserted smoothly. The lengthwise dimension Q1 of the insertion plate 31 is greater than the widthwise opening dimension P2 of the long hole 11, i.e., the distance between the opposing long-side ribs 12a, so both ends of the insertion plate 31 are positioned to penetrate the opposing insertion holes 13. Furthermore, when the fixing bracket 3 is rotated 90°, the insertion plate 31 abuts against the ends of the insertion hole 13, preventing rotation beyond 90°.

The height of the upper bracket 30 is set to correspond to the distance from the insertion hole 13 of the flooring 1 to the bottom surface of the flooring 1, so that as the fixing bracket 3 rotates, the notch 39 of the regulating plate 32 rests on the flange of the beam 2, and the regulating plate 32 does not interfere with the beam 2.

Next, the bolt 50 is tightened to bring the upper metal fitting 30 and the lower metal fitting 40 close to each other. Both ends of the insertion plate 31 of the upper metal fitting 30 are inserted into the insertion hole 13 and are restrained in the vertical direction, so that the lower metal fitting 40 is lifted and the notch 47 of the lower side 42 bites into the back surface of the flange 21 of the beam material 2, and the flange 21 is sandwiched between the regulating plate 32 and the lower side 42. At this time, the notch 39 of the regulating plate 32 of the upper metal fitting 30 abuts against the beam material 2 to regulate the distance between the upper metal fitting 30 and the lower metal fitting 40, so that damage to the insertion hole 13 due to overtightening of the bolt 50 is prevented. Furthermore, the notch 39 provided in a part of the lower end of the regulating plate 32 bites into the flange 21 and can be firmly clamped. Then, the floor material 1 is firmly engaged with the insertion plate 31 of the upper metal fitting 30 of the fixing metal fitting 3 at the insertion hole 13, and the beam material 2 is firmly engaged with the lower metal fitting 40 at the flange 21, and the floor material 1 is fixed on the beam material 2.

In this fixing structure, the fixing bracket 3 is sized to be able to be inserted through the long hole 11 of the tread 10, and the entire fixing bracket 3 can be positioned lower than the top surface of the tread 10 and engaged with the flooring 1. Therefore, when the flooring 1 is fixed to the beam 2 by the fixing bracket 3, the fixing bracket 3 does not protrude from the top surface of the tread 10, and the flatness of the tread 10 is not impaired.

The work of engaging the fixing bracket 3 with the floor material 1 and the beam material 2 involves inserting the fixing bracket 3 through the long hole 11 in the tread 10, rotating the fixing bracket 3, and fastening the bolt 50. All of these operations can be performed from the top side of the tread 10, ensuring excellent workability.

In this way, multiple flooring materials 1 are fixed in parallel on beams 2 using the fixing brackets 3 as shown in Figure 9.

On the other hand, the floor structure of this embodiment is provided with a hole cover 6 that is attached to the floor material 1 so as to cover the long hole 11.

As shown in Figures 1 to 8, in this embodiment, the hole cover 6 is made of a single piece of synthetic resin. The hole cover 6 has an oval or oblong (bamboo leaf) cover part 61 that corresponds to the long hole 11 of the flooring material 1, fitting parts 62a, 62b that are integrally formed on the underside (backside) of the cover part 61 so as to protrude downward, and hooking claws 63a, 63b that are integrally formed on the outer periphery of the fitting parts 62a, 62b so as to protrude outward.

The cover part 61 is formed so that its outer peripheral shape corresponds to the outer peripheral shape of the long hole 11, and is configured so that it can be positioned to cover the entire periphery of the long hole in the flooring material 1.

The fitting parts 62a, 62b include a long side fitting part 62a that is provided to correspond to the long side of the cover part 61, and a short side fitting part 62b that is provided to correspond to the short side.

The short side fitting portions 62b are provided at both ends of the length of the cover portion 61, and are formed in a U-shape in plan view, extending continuously from the arc-shaped short side portion to both ends of the long side portion.

The long side fitting portions 62a are provided between the short side fitting portions 62b at both ends of both side edges of the cover portion 61, two on each side, and are formed as thin plates extending downward.

A long side hooking claw 63a is integrally formed on the lower outer surface of each long side fitting portion 62a so as to protrude outward. Furthermore, a short side hooking piece 63b is formed on the lower outer surface of the short side fitting portion 62b so as to protrude outward at a position corresponding to the center of the short side, and a long side hooking claw 63a is integrally formed on the lower outer surface of the short side fitting portion 62b so as to protrude outward at a position corresponding to the end of the long side.

The long side hook claw 63a is positioned at a position corresponding to the insertion hole 13 of the long side rib 12a, and the short side hook claw 63b is positioned at a position corresponding to the lower end position of the short side rib 12b.

In addition, the cover portion 61 of the hole cover 6 has three circular openings 65 arranged in a line in the length direction and penetrating the cover portion 61. Note that in this embodiment, the openings 65 do not necessarily have to be configured as through holes, and the openings 65 can also be configured as recesses to which the cap 7 described below can be attached.

In this embodiment, a circular cap 7 is detachably attached to the opening 65 of the hole cover 6. In this embodiment, the cap 7 is made of, for example, a molded product of synthetic resin or synthetic rubber, and when attached to the opening 65, the upper surface of the cap 7 is set to protrude slightly above the upper surface of the hole cover 6.

When attaching the hole cover 6 having the above configuration to the long hole 11 of the flooring material 1, it is sufficient to simply push the hole cover 6 into the long hole 11 as shown in Figures 1 to 4. Then, the hook claws 63a, 63b of the hole cover 6 elastically deform inward while the fitting parts 62a, 62b are fitted into the ribs 12a, 12b of the long hole 11, and when the long side hook piece 63a reaches the insertion hole 13 of the long side rib 12a, the long side hook piece 63a elastically returns outward and hooks into the insertion hole 13, and when the short side hook piece 63b reaches the lower end of the short side rib 12b, the short side hook piece 63b elastically returns outward and hooks into the lower end of the short side rib 12b. In this way, the hook pieces 63a, 63b are hooked to the specified positions of the ribs 12a, 12b by snap fit, and the hole cover 6 is attached to the long hole 11 in a non-removable state. In this installed state, the cover portion 61 of the hole cover 6 is positioned to cover the entire area of the long hole 11.

The cap 7 may be attached to the hole cover 6 in advance, but in some cases, the cap 7 may be attached to the hole cover 6 after the hole cover 6 is attached to the long hole 11.

On the other hand, in the floor structure of this embodiment, as shown in FIG. 9, hole covers 6 are attached only to selected, predetermined long holes 11 among the long holes 11 of the floor material 1 laid in parallel in large numbers, and the hole covers 6 form display patterns such as letters, designs, marks, patterns, etc. that can be seen by people in the vicinity. For example, in the floor structure shown in the same figure, the letters "IN" and "OUT" are displayed by multiple hole covers 6. By forming arrows as display patterns other than letters, it is possible to convey information such as the direction and route that pedestrians should take, and by forming a wide variety of attractive patterns, it is possible to improve the design. In this way, the floor structure of this embodiment can improve the design and functionality, provide excellent convenience, and increase the product value of the floor structure.

In addition, in this embodiment, by using multiple types of hole covers 6 with different colors, it is possible to form a more diverse display pattern, thereby further improving the design and functionality.

Furthermore, in this embodiment, since the hole cover 6 is configured to be fitted with the cap 7, it is possible to achieve even greater multi-functionality by using a material for the cap 7 that is different from that of the hole cover 6. For example, by imparting phosphorescent properties to the cap 7, it is possible to make the cap 7 glow and further enhance the design and display effect, and by imparting high friction (slip resistance) to the cap 7, it is possible to further improve safety.

In addition, by using multiple types of caps 7 in different colors, it is possible to create even more diverse display patterns, further improving design and functionality.

In this embodiment, the display pattern is formed by the portion of the long hole 11 in the floor structure to which the hole cover 6 is attached, i.e., the display pattern is formed by so-called filled-in characters. However, this is not limited to this, and in the present invention, the display pattern may be formed by the portion of the long hole 11 in the floor structure to which the hole cover 6 is not attached, i.e., the display pattern may be formed by so-called filled-in characters.

Furthermore, in this embodiment, hole covers 6 may be attached to all of the long holes 11 in the floor structure, and only some of the hole covers 6 and/or some of the caps 7 may be colored in different colors to form a display pattern that is visible to people in the vicinity.

In addition, in this embodiment, as shown in Figures 10A to 10E above, the fixing brackets 3 used to fix the flooring material 1 to the beams 2 do not protrude upward from the top surface of the flooring material 1, so the hole covers 6 can be securely attached to the long holes 11 corresponding to the positions where the fixing brackets 3 are attached. Therefore, the hole covers 6 can be attached to any of the long holes 11 of all the flooring materials 1 that have been laid, and the desired display pattern can be reliably formed.

As described above, in this embodiment, the work of fixing the flooring 1 to the beams 2 via the fixing brackets 3 is a one-way construction work that can be done only from one direction, from the top side (front side) of the tread 10, which further improves workability and allows construction work to be carried out more efficiently.

Figures 11 and 12 show a flooring material 1 that is a modified example of the present invention. As shown in both figures, this flooring material 1 uses a metal hole cover 6 that is attached to the long hole 11.

The hole cover 6 is formed by bending a metal plate of a specified shape, and is integrally provided with a cover portion 61, fitting portions 62 at both ends formed by bending downward both longitudinal ends of the cover portion 61, a hook piece 63 formed by cutting outward a region of the fitting portion 62 at one end, and an engagement piece 64 formed by bending outward the lower end of the fitting portion 62 at the other end.

The hole cover 6 of this configuration is attached to the long hole 11 of the flooring 1 (flooring body 16) of the same configuration as above. That is, as shown by the imaginary line (two-dot chain line) in Figure 11, the fitting portion 62 on the other end side of the hole cover 6 is inserted into the long hole 11, and the engagement piece 64 of the fitting portion 62 on the other end side engages with the lower end of the short side rib 12b on the other end side of the long hole 11. When one end side of the hole cover 6 is pushed into the long hole 11 in this engaged state, as shown by the solid line in the same figure, the hook piece 63 elastically deforms inward while the fitting portion 62 on one end side is inserted into the long hole 11, and when the hook piece 63 reaches the short side rib 12b on one end side, the hook piece 63 elastically returns to the outside and hooks onto the lower end of the short side rib 12b on one end side. In this way, the engagement piece 64 on the other end engages with the short side rib 12b on the other end, while the hook piece 63 on one end hooks onto the short side rib 12b on the other end by snap fitting, so that the hole cover 6 is attached to the long hole 11 in a non-removable state.

The other configurations of this modified flooring material 1 are substantially similar to those of the flooring material of the above embodiment.

The flooring material 1 of this modified example can achieve the same effects as the flooring material 1 of the above embodiment.

The floor structure of this invention can be suitably used to form floors, passageways, steps, etc. at a specified height in factories, laboratories, warehouses, etc.

1: Floor material 10; Tread 11: Long hole 12a: Long side rib 12b: Short side rib 13: Insert hole 2: Beam material 3: Fixing metal fitting 30: Upper metal fitting (first metal fitting)
40: Lower metal fitting (second metal fitting)
50: Bolt 6: Hole cover 62: Fitting portion 62a: Long side fitting portion 62b: Short side fitting portion 63: Hooking piece 63a: Long side hooking claw 63b: Short side hooking claw 65: Opening 7: Cap

Claims (5)

A flooring material in which a tread has a plurality of long holes arranged in parallel and a rib is formed on the outer peripheral edge of each long hole so that the rib protrudes to the back side,
A hole cover for closing the long hole is provided,
The hole cover has a fitting portion provided on a back surface side thereof so as to protrude downward, and a hook provided at a lower end of the fitting portion,
The hole cover is configured to be attachable to the long hole by fitting the fitting portion into the long hole and hooking the hook to the rib by snap-fitting,
A flooring material characterized in that a display pattern that is visible to people in the vicinity is formed by the hole cover attached to any one of the plurality of long holes. The rib includes a long side rib arranged corresponding to the long side portion of the long hole and having an insertion hole, and a short side rib arranged corresponding to the short side portion,
The hooking claws include long side hooking claws provided corresponding to the long side portions and short side hooking claws provided corresponding to the short side portions,
The flooring material according to claim 1, wherein the hole cover is attached to the long hole by the long side hooking claw being inserted into and hooked onto the insertion hole of the long side rib and the short side hooking claw being hooked onto the lower end of the short side rib. The flooring material according to claim 1 or 2, in which an opening is provided in the hole cover and a cap is attached to the opening. A floor structure characterized in that a plurality of flooring materials according to any one of claims 1 to 3 are laid side by side. A fixing bracket is provided for fixing the flooring material to a beam material,
the fixing metal fitting includes a first metal fitting, a second metal fitting, and a bolt, each of which can be inserted into the long hole;
The first fitting is engaged with the floor material, and the first fitting and the second fitting are connected and fixed by the bolt in a manner to sandwich the beam material, thereby fixing the floor material to the beam material,
5. The floor structure according to claim 4, wherein the fixing metal fittings are disposed lower than the surface of the tread when the floor material is fixed to the beam material.

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