JPH0647073Y2 - Floor material for free access floor - Google Patents

Description

TECHNICAL FIELD The present invention relates to a floor material for a free access floor laid in an office room, a computer room or the like in which a large number of electronic devices are installed.

Conventional technology With the increase in the number of electronic communication devices and office equipment installed indoors,
Recently, free access floors having double floors have been used in order to functionally process the wiring around them. As one of the methods for forming such a free access floor, a plurality of unit floor materials in which a covering material such as carpet is joined to a base body having supporting legs are prepared, and one of these floor materials is placed on the floor surface of concrete or the like. There is a so-called floor laying method in which the floor materials are laid one by one, but in this case, each floor material is required to be laid in a stable state without rattling.

As a floor material for a free access floor that meets such a demand, conventionally, a rectangular support base is formed by two substrates that are divided in two in a diagonal direction, and a cover material is adhered to the upper surface of the support base. There is known a flooring material which absorbs unevenness by connecting the facing material along a dividing line so that it can be bent into a mountain fold and a valley fold (for example, Japanese Patent Publication No. 61-34545). .

However, since the above-mentioned conventional flooring material constitutes a supporting base by combining two substrates, it is possible to prevent the unevenness of the laying surface on both sides of the dividing line from being two. Since the floor material bends along the dividing line, it is possible to absorb unevenness, but if there is unevenness in the direction of the dividing line, it is difficult to absorb the unevenness and rattling may occur. It was However, as disclosed in the same publication, such a drawback can be solved by providing the support leg with an adjuster capable of adjusting the length, but in this case, the structure becomes complicated and the cost of the floor material is reduced. In addition to inviting an increase, it was a drawback that the adjustment of the floor height by the adjuster at the time of laying was troublesome and the workability was poor.

The present invention has been made in view of such a technical background, and does not require any adjustment of the floor height at the time of laying, but it prevents unevenness in each direction of the laying surface. It is an object of the present invention to provide a floor material for a free access floor that can be reliably absorbed and can realize a stable laid state, and has a simple structure and excellent strength.

Means for Solving the Problems In order to achieve the above object, a floor material for a free access floor according to the present invention will be described with reference to the reference numerals in the drawings. The rectangular support bases (1) are formed by combining the individual pieces in a plane, and the substrates (11) are arranged with a gap between each other, so that the two support bases are arranged in the diagonal direction. Gaps (3) and (4) are formed in the substrate, and a single flexible covering material (2) is joined to the upper surface of the supporting base (1) in a slightly protruding state, and each substrate is (11) has a substrate main body (12) having a downward bent piece (12a) on the peripheral edge, and also has a downward bent piece (13a) also on the peripheral edge so as to be superposed on the lower surface center part of the substrate main body (12). The bonded reinforcing plate (13) and the three corners of the bottom surface of the substrate body (12) The bent piece (12a) is provided with a supporting leg piece (14) having a V-shaped cross section, which is fixed to the inner surface of the bending piece (12a) so as to protrude downward, and a buffer member (17) is provided at a lower end corner of the supporting leg piece. It is characterized by being attached.

Further, preferably, at least one of the substrates (11) constituting the support base (1) is provided so that the floor material can be provided with a wiring outlet and an outlet mounting hole (5) as required. In the above, an opening (18) is formed in the overlapping portion of the substrate body (12) and the reinforcing plate (13), and the peripheral edge of the opening of the reinforcing plate (13) is larger than the peripheral edge of the opening of the substrate main body (12). A step portion (19) is formed by projecting inward, the inner lid (6) is detachably fitted to the step portion, and the outer cover material (2) is attached to the upper surface of the inner lid (6). It is characterized by being in a non-bonded state.

Action When forming a free access floor, the floor material (A) is used as a unit floor material and laid one by one on the floor surface of concrete or the like. Thus, at least four substrates (1
Since there are two diagonal gaps (3) and (4) formed in the support base (1) of the flooring composed of 1),
The covering material (2) bends in a mountain fold, a valley fold, or a step difference along any of the diagonal lines. Therefore, regardless of the diagonal direction of the laid surface, the unevenness is absorbed by the appropriate bending of the covering material (2). Therefore, it is not necessary to provide the adjuster on the support leg piece (14) for absorbing the unsteady land.

Further, each substrate (11) has an isosceles triangular shape, and its lower surface 3
Since the supporting leg pieces (14) are provided at the corners of the points, each substrate is supported in a stable state by three-point support. Moreover, the cushioning member (17) provided at the lower end corner of the supporting leg piece (14) absorbs the unevenness more and more, and the stability is increased.

Further, the bent pieces (12a) provided on the peripheral edge of the substrate body (12) forming each substrate (11) function as reinforcing ribs. Further, the supporting leg pieces (14) are formed in a V-shaped cross section, and the bending pieces (12
Since it is joined to the inner surface of a), the bending piece (12a) is prevented from opening to the outside, and the function as a reinforcing rib is surely guaranteed. In addition, the board body (1) is also provided by a reinforcing plate (13) with a peripheral bent piece (13a) provided in the center of the lower surface of the board body (12).
2) is reinforced. Therefore, although each substrate (11) is made of an inexpensive steel plate, it is excellent in strength.

On the other hand, in the flooring material of claim (2), the wiring outlet and the outlet mounting hole (5) are formed by cutting the upper cover (2) above the inner cover (6) and then removing the inner cover (6). It is done by removing. Since the covering material is in a non-bonded state on the upper surface of the inner lid, it can be easily cut off.

Embodiment Next, the structure of the present invention will be described based on an embodiment shown in FIGS.

1 to 3, (A) is a floor material, and the floor material (A) is composed of a supporting substrate (1) and a covering material (2).

The supporting substrate (1) is assembled so that four substrates (11) each having an isosceles right triangle are arranged so that the vertices of their right angles are centered in a plane so that the substrate has a square appearance as a whole. It becomes. Moreover, the substrates (11) are arranged with a slight gap between them, so that the supporting base (1) has a gap (3) in each of the two diagonal directions.
The condition (4) exists. Then, on the upper surface of the supporting substrate (1), a carpet made of a single material,
A covering material (2) such as a tile carpet is joined by an adhesive or the like with its peripheral edge slightly protruding from the peripheral edge of the supporting substrate (1). The covering material (2) has flexibility, and as shown in FIG. 3, it is mountain-folded or valley-folded along the diagonal gaps (3) and (4) of the support base (1). Or, it can be bent in a stepped manner.

As shown in FIGS. 4 and 5, the substrate (11) includes a substrate body (12) having an isosceles right triangle, and the substrate body (12).
A reinforcing plate (13) joined to the central part of the lower surface of the substrate by welding or the like, and three supporting leg pieces of the same length fixed to three corners of the lower surface of the substrate body (12) so as to project downward. (14)
have. Each of these members is made of a steel plate having a thickness of about 2 mm. Then, the following measures are taken in order to compensate for the decrease in strength due to the steel plate. That is, first, a downward bending piece (12a) is formed on the periphery of the substrate body (12) by bending, and the bending piece (12a) is given a function as a reinforcing rib. Further, the three support leg pieces (14) are bent into a V-shaped cross section corresponding to the angle of each corner, and the two of the corners are
The bent pieces (12a) (12a) on the sides are arranged inside, and the outer surfaces are fixed in a state of being joined to the inner surfaces of the bent pieces on two adjacent sides. In this way, the supporting piece (14) and the bending piece (12
By being joined with a), the bending piece (12a) is prevented from opening outward, and the function as a reinforcing rib can be reliably ensured. The reinforcing plate (13) is provided to reinforce the central portion of the substrate body (12), which is the weakest point against the pressing load applied after the installation. In addition, in order to further strengthen the reinforcing effect of the reinforcing plate (13), a downward bending piece (13a) having a function as a reinforcing rib is also provided on the peripheral edge of the reinforcing plate.
Further, on the lower surface of the substrate body (12), a reinforcing member (15) having a U-shaped cross section that opens downward is joined to the inner surface of the bent piece (12a) along the inside of the long side (16). The long side of the three sides, which has the lowest load resistance, is reinforced.

Shear hardness of 50 to 50 at the lower end corners of the supporting leg pieces (14).
80 cushioning members (17) made of elastic material such as rubber are attached to each for absorbing non-terrestrial materials, and further countermeasures for non-terrestrial absorption are taken. The size of the cushioning member (17) is preferably as small as possible in terms of the effect of absorbing un-terrain, while it is preferably as large as possible in terms of load bearing capacity. Therefore, the size is set to the minimum necessary in consideration of both of the unsteady absorbing action and the load bearing capacity.

Further, the floor material (A) can be provided with an outlet for wirings accommodated below the floor material and an outlet mounting hole (5) (shown in FIG. 1). That is, one of the four substrates (11) constituting the supporting base (1) is
An opening (18) is formed at the overlapping portion of the substrate body (12) and the reinforcing plate (13). In addition, since the peripheral edge of the opening of the reinforcing plate (13) projects inward from the peripheral edge of the opening of the substrate body (12), as shown in FIG. 1 and FIG.
9) is formed, and a flat plate-like inner lid (6) is formed on this step (19).
Is fitted. Then, the inner cover (6) is covered with the facing material (2). Therefore, to form the wiring outlet or outlet mounting hole (5),
Although it is necessary to cut the covering material (2) above the inner lid (6), in order to facilitate the cutting, the covering material (2) and the substrate ( 1
1) and are not joined. In addition, (7) shown in FIG. 6 is an adhesive layer. The cutting of the covering material (2) is often performed by using a drilling tool of a system in which the blade portion is rotated around a fixed shaft to cut into a circular shape, but in the center portion of the upper surface of the inner lid (6). Fixed shaft positioning hole (6
a) is provided in a penetrating state. The reinforcing plate (13)
A downward annular rib (13b) for reinforcement is provided on the periphery of the opening (18) to supplement the strength reduction due to the formation of the opening.

The floor material (A) having the above-mentioned configuration is spread one by one on a floor surface of concrete or the like, and thus a desired free access floor is formed. Although illustration is omitted, it is also recommended to temporarily fix and fix the boards (11) to each other with a temporary fixing member in order to avoid inconvenience during transportation and handling of the floor material due to bending of the facing material (2). Further, the wiring outlet and the outlet mounting hole (5) may be provided in two or more places on one floor material.

EFFECTS OF THE INVENTION In the device according to claim 1, since a gap is formed in each of the two diagonal directions of the supporting base formed in a rectangular shape by four substrates, the covering material is formed on both diagonal lines. Even along it, mountain folds, valley folds, or uneven bends are possible. Therefore, even if the unevenness of the laying surface exists in any of the diagonal directions, unevenness can be absorbed by appropriately bending the covering material, and a stable laying state without rattling can be obtained. In addition, since the floor material itself has a self-adjusting function for unevenness of the laying surface in this manner, it is not necessary to provide an adjuster for adjusting the floor height on the supporting leg piece and finely adjust this when laying the floor material. The work can be done simply by placing it, and the construction simplicity can be improved. Furthermore, since each substrate constituting the supporting base is formed into an isosceles triangle, and supporting leg pieces are provided at three corners of the lower surface thereof,
Each board can be supported in a stable state by three-point support, and in combination with a cushioning member provided at the lower end corner of the support leg piece, unevenness can be more and more absorbed and laying stability can be increased.
Furthermore, since the cover material is slightly protruded from the peripheral edge of the support base, it is possible to avoid interference between the boards of the adjacent floor materials during laying, and by cutting the peripheral protruding portion, the width of the floor material is reduced. Adjustment is also possible, and there is the freedom to deal with the dimensional error between the laying surface and the floor material. Furthermore, since the substrate is made of steel plate, it can be provided at low cost, but the strength decrease is reduced by the downward bending piece as a reinforcing rib provided on the peripheral edge of the substrate body and the reinforcing member joined to the central portion of the lower surface of the substrate body. Since it can be supplemented by the plate and the supporting leg piece fixed to the bent piece at the corner portion of the lower surface of the substrate body, it is possible to provide a flooring material having a simple structure and low cost, but excellent strength. .

In addition to the above effects, the invention according to claim 2 has an effect that the wiring outlet and the outlet mounting hole can be easily formed by cutting the outer cover material above the inner lid and removing the inner lid. Moreover, since the surface covering material is in a non-bonded state on the upper surface of the inner lid, the cutting can be performed without difficulty.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a perspective view of a flooring material in which a supporting base, a covering material and an inner lid are shown separately, and FIG.
Fig. 3 is a bottom view of the floor material, Fig. 3 is a sectional view taken along line III-III or III'-III 'of Fig. 1, Fig. 4 is a perspective view of the substrate turned upside down, and Fig. 5 is Fig. 4 6 is a sectional view taken along line VV of FIG. 6, and FIG. 6 is a sectional view taken along line VI-VI of FIG. (A) ... Floor material, (1) ... Supporting substrate, (2) ... Covering material,
(3) (4) ... Gap, (5) ... Wiring outlet (outlet mounting hole), (6) ... Inner lid, (11) ... Board, (12) ...
Substrate body, (12a) ... Bending piece, (13) ... Reinforcement plate, (13a)
… Bent pieces, (14)… Support leg pieces, (17)… Cushion members, (18)
… Aperture, (19)… Step.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Creator Makoto Fukuda 2-5-1 Nakamoto, Higashisei-ku, Osaka-shi, Osaka 308

Claims (2)

[Scope of utility model registration request] 1. At least 4 of isosceles triangular steel plate substrates
Square support bases are configured by combining the individual pieces in a plane, and the substrates are arranged with a gap therebetween, so that a gap is formed in two diagonal directions of the support bases. A flexible single cover material is joined to the upper surface of the support base in a slightly protruding state at the peripheral edge, and each of the substrates has a substrate body having a downward bent piece at the peripheral edge,
A reinforcing plate that also has a downward bent piece on the periphery and is joined to the central portion of the lower surface of the substrate body in an overlapping manner, and a reinforcing plate that is joined to the inner surface of the bent piece at three corners of the lower surface of the substrate body and A floor material for a free access floor, comprising: a supporting leg piece having a V-shaped cross section, which is fixed in a protruding state, and a cushioning member attached to a lower end corner portion of the supporting leg piece. 2. In at least one of the substrates constituting the supporting base, an opening is formed at a portion where the substrate body and the reinforcing plate overlap with each other, and the peripheral edge of the opening of the reinforcing plate is the peripheral edge of the opening of the substrate main body. 2. A step portion is formed by projecting inward from the inner lid, and the inner lid is detachably fitted to the step portion, and the outer cover material is in a non-bonded state on the upper surface of the inner lid. Floor material for free access floor described in.