JPH076329Y2 - 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 a carpet is joined to a base body having legs are prepared, and these floor materials are placed on a floor surface such as concrete. There is a so-called laid-down method of laying the sheets 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). .

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, since the above-mentioned conventional flooring material constitutes a supporting base by combining two substrates, with respect to the unevenness of the laying surface on both sides sandwiching the dividing line, Since the floor material bends along the bisector, it is possible to absorb unevenness, but if there is unevenness in the direction of the bisector, it may be difficult to absorb it and rattling may occur. there were. 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.

In addition, since each of the substrates constituting the supporting base itself is weak in strength, there is a drawback that load resistance is 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 does not cause unevenness in each direction of the laying surface due to unevenness. 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 upper surface of the support base (1), and a single flexible covering material (2) is bonded to the upper surface of the support base (1). Corresponding press-molding having downward bulging ribs (13a) for reinforcement along the vicinity of the peripheral edge of the substrate body (12) on the lower surface of the substrate body (12) having downwardly-positioned bent pieces (12a) for positioning With the reinforcing plate (13) positioned by the bent piece (12a), Leg members (5) and (6), which are joined together in a mating manner and which straddle adjacent substrates (11), swing at the corners and center of the support base (1). It is characterized in that it is attached in a manner that allows

Further, preferably, at least one of the substrates (11) constituting the supporting base (1) is provided so that the floor material can be provided with a wiring outlet and an outlet mounting hole (9) as required. In the above, an opening (16) is formed in the overlapping portion of the substrate body (12) and the press-molded reinforcing plate (13), and the periphery of the opening of the reinforcing plate (13) is formed in the substrate body (1).
The step (17) is formed by projecting inward from the peripheral edge of the opening of (2), and the inner lid (10) is detachably fitted to this step, and the inner lid (10) It is characterized in that the surface material (2) is in a non-bonded state on the upper surface.

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) is bent in a mountain fold shape or a valley fold shape along both 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 an adjuster for adjusting the leg for absorbing the unsteady ground.

Further, since the supporting base (4) is formed of four or more substrates (11), if the supporting bases have the same size, the load-bearing capacity of each substrate is larger than that of two substrates. Will increase. Further, the peripheral edge and the central portion of the substrate body (12) constituting each substrate (11) are reinforced by the bulging ribs (13a) of the press-molded reinforcing plate (13) joined to the lower surface thereof. Therefore, although each substrate (11) is made of an inexpensive steel plate, it is excellent in strength.

On the other hand, in the floor material according to claim (2), the wiring outlet and the outlet mounting hole (9) are formed by cutting the outer cover (2) above the inner cover (10) and then removing the inner cover (10). 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) has a support base (1) and a covering material (2).

The support base (1) is assembled so that the four right isosceles triangular substrates (11) are arranged in a plane such that the vertices of their right angles are centripetal, so that the support base (1) 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 with an adhesive or the like. 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). It can be bent into a shape. Further, the outer edge of the cover material (2) slightly protrudes from the outer edge of the support base (1),
It is said that the width of the flooring material can be finely adjusted by cutting off this peripheral edge protruding portion.

As shown in FIGS. 4 to 6, the substrate (11) is a right-angled isosceles triangular substrate body (12) and a press-molded reinforcing plate (13) joined to the lower surface of the substrate body (12). Consists of.
The board body (12) and the reinforcing plate (13) are both 2 m thick.
It consists of steel plates of around m. The board body (12)
A downward bending piece (12a) is formed on the peripheral edge of the by bending. The bent piece (12a) functions as a positioning member when the press-molded reinforcing plates (13) are arranged in a superposed manner, but also serves as a reinforcing rib on the periphery of the substrate body (12). It is a thing. On the other hand, the reinforcing plate (13) is composed of a press-molded product having an isosceles triangular shape corresponding to the substrate body (12), and has a wide reinforcing bulge downwardly bulging with a peripheral edge slightly left on the periphery thereof. The projecting rib (13a) is formed along the three sides, and the part excluding the bulging rib (13a) is a flat surface. The reinforcing plate (13) is arranged on the lower surface of the substrate body (12) in an overlapping manner with its peripheral edge positioned on the bent piece (12a), and is in contact with the substrate body (12). Are spot-welded at a plurality of positions to be integrated with the substrate body (12). If necessary, a rib in the width direction may be further formed on the bottom of the bulging rib (13a).

Leg members (5) and (6) for supporting the support base (1) on the floor are attached to the four corners and the center of the support base (1). The leg members (5) at the four corners are shown in FIGS.
As shown in the figure, a fan-shaped main body (51) having an opening angle of 90 degrees for supporting the lower ends of the corners of the adjacent substrates (11) (11) on the upper surface, and the fan-shaped main body (51) projecting inward from the upper surface of the main body (51). A glass projection piece (52), a locking piece (53) standing upright along the orthogonal side edge of the main body (51), and projections on both sides of the guide projection piece (52) on the upper surface of the main body (51). It has two engaged protrusions (54) (54).
Then, as shown in FIG. 9, the leg member (5) has the guide protrusion (52) fitted and arranged between the bulging ribs (13a) (13a) of the adjacent substrates (11). Engagement protrusion (54) with the upper end surface abutting on the upper bottom surface between the bulging ribs and the locking piece (53) locked to the side surface of the board corner.
(54) Bulging ribs (13a) (13a) corresponding engaging holes (14)
It is attached by engaging with (14). The leg member (5) is attached in such a manner that the adjacent substrate (11) can be rocked in a mountain fold or valley fold shape. Usually, even if a means for that purpose is not provided, unless a leg member is integrally joined to a substrate or the like, a slight gap between the locking piece (53) and the bulging rib (13a) or the locking piece (53 ), The swinging of the adjacent substrate (11) is substantially allowed for the mountain-folding and valley-folding bendings. However, in this embodiment, the width (W ₁ ) of the guide protrusion (52) is set in order to ensure the swing of the substrate more reliably.
Is designed to be smaller than the gap (l ₁ ) between the bulging ribs (13a) (13a), and the entire leg member is attached so as to slightly move vertically and horizontally. Further, the upper end surface of the guide protrusion (52) has an arcuate notch (5a) for avoiding a bent piece (12a) of the substrate body (12) in the adjacent substrate (11) in the attached state.
5) has been formed. Furthermore, the bulging portions (56) projecting at right angles to each other on both outer surfaces of the corner portions of the leg member (5).
(56) is formed. The bulging portion (56) is provided in order to avoid direct contact between the supporting bases (1) in the adjacent floor material by coming into contact with the bulging portion of the adjacent floor material when laying the floor surface. The end is substantially at the same position as the edge of the facing material (2). Further, a concave portion (57) is formed on the bottom surface of the leg member main body (51), and the cushioning member (7) made of an elastic member such as rubber having a Shore hardness of about 50 to 80 is projected downward in the concave portion (57). It has been fitted and further measures to absorb the unevenness have been taken.

On the other hand, the leg member (6) at the center of the supporting base (1) is
As shown in FIG. 11 and FIG. 11, four guide protrusions (62) are arranged in four equal parts at the peripheral edge of the upper surface of the circular main body (61), and the middle portion of each guide protrusion (62) is provided. Engaging projections (64)
have. Then, as shown in FIG. 12, the guide projecting piece (62) was arranged in the gap between the bulging ribs (13a) (13a) and the upper end surface thereof was brought into contact with the upper bottom surface between the bulging ribs. In this state, it is attached by engaging the engaging projection (64) with the corresponding engaging hole (15) of each bulging rib (13a). This leg member (6) is also a mountain fold of the adjacent substrate (11) (11),
The guide ribs (62) are attached in such a manner that they can be reliably allowed to swing in a valley-folded bend. For this reason, the width (W ₂ ) of the guide protrusion (62) is set to the bulging rib ( 13a) It is designed to be smaller than the gap (l ₂ ) between (13a), and the whole is attached so as to slightly move vertically and horizontally. Also, on the upper end surface of the guide protrusion (62), the bent piece (12
An arcuate notch (65) is formed to avoid a). Furthermore, the bottom surface of the leg member body (61) has a recess (6
7) is formed, and the buffer member (8) is also fitted in the recess (67) so as to project downward.

The above two types of leg members (5) and (6) are both made of hard synthetic resin in the embodiment, but when it is necessary to design the leg members (5) and (6) to have a high height, Metal leg members may be used to ensure strength.

By the way, the floor material (A) can be provided with an outlet for wirings accommodated below the floor material and an outlet mounting hole (9) (shown in FIG. 1). That is, one of the four substrates (11) constituting the supporting base (1) is
An opening (16) is formed at the overlapping portion of the substrate body (12) and the reinforcing plate (13). Moreover, 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.
7) is formed, and a flat plate-like inner lid (10) is formed on this step (17).
Is fitted. Then, the inner cover (10) is covered and the covering material (2) is covered. Therefore, in order to form the wiring outlet and the outlet mounting hole (9),
Although it is necessary to cut the covering material (2) above the inner lid (10), in order to facilitate the cutting, the covering material (2) and the substrate (on the upper surface of the inner lid (10) and its peripheral portion ( 1
1) and are not joined. Note that (20) shown in FIG. 13 is an adhesive layer. The cutting of the covering material (2) is often performed by using a drilling tool of a system in which a blade is rotated around a fixed shaft to cut into a circular shape.
Fixed shaft positioning hole (10a) for the tool in the center of the upper surface of (0)
Are provided in a penetrating state. A reinforcing downward annular rib (13b) is provided on the periphery of the opening (16) of the reinforcing plate (13) in order to compensate for the decrease in strength 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. The leg members (5) and (6) may be attached to the support base body (1) at the time of construction, but if attached in advance, excessive bending of the covering material (2) is suppressed, Avoid inconvenience during transportation and handling of floor materials. Also, the attachment means of the leg member is not limited to the illustrated embodiment,
The bulging ribs (13a) may be provided with engaging projections, and the leg members (5) and (6) may be provided with engaging holes to engage with each other, or other mounting means may be used. Further, the wiring outlet and the outlet mounting hole (9) may be provided in two or more places on one floor material.

Effect 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 one of the two diagonal lines. It is possible to make a mountain fold or valley fold along the line. Moreover, since the leg members are attached in such a manner as to allow the substrate to swing, even if the unevenness of the laying surface exists in any diagonal direction, the unevenness can be absorbed by appropriately bending the cover material,
A stable laying condition can be achieved. In addition, since the floor material itself has a self-adjusting function for unevenness of the laying surface in this way, it is not necessary to provide an adjuster for adjusting the floor height and finely adjust this when laying, and simply place the floor material. The work can be completed and the construction simplicity can be improved significantly.

Further, since the substrate is made of steel plate, it can be provided lighter and cheaper, while the peripheral bulging ribs of the press-molded reinforcement plate joined to the lower surface of the substrate body allow the parts along the sides and the center, which are weak points of the strength of the substrate, to be formed. In addition to being able to reinforce the part, and in addition to the fact that the downward bending piece for positioning on the peripheral edge of the substrate body functions as a reinforcing rib, it is possible to sufficiently compensate for the strength decrease due to being made of steel plate, and the structure is simple and lightweight However, it is possible to provide flooring materials that are inexpensive but have excellent strength. Moreover, since the supporting base is made up of four or more substrates, if the supporting base has the same size, the load bearing capacity of each substrate will be increased compared to the case where the supporting base is made of two substrates, and the strength will finally increase. It can be a floor material that is advantageous in terms of quality. Furthermore, each substrate can be easily manufactured by joining a press-formed reinforcing plate of a corresponding shape to the lower surface of the substrate main body in an overlapping manner, and when the reinforcing plates are superposed, the peripheral edge of the substrate main body is bent. Since the position can be easily determined only by positioning it on one side, the flooring itself can be made easy to manufacture. Furthermore, since the leg member is provided so as to straddle each adjacent substrate, it is possible to avoid the complexity of providing the leg portion for each substrate and reduce the number of constituent parts.

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, an inner lid and leg members are shown separately, and FIG. 2 is a bottom view of the flooring material. Figure 3 is III-III in Figure 1.
Line or III′-III ′ line sectional view, FIG. 4 is a perspective view showing the substrate main body and the press-molded reinforcing plate separated from each other, and FIG. 5 is a perspective view showing the substrate being turned over. 6 is a sectional view taken along line VI-VI in FIG. 5, FIG. 7 is a perspective view of a leg member attached to a corner of a supporting base, and FIG. 8 is a sectional view taken along line VIII-VIII in FIG. FIG. 10 is a sectional view taken along the line IX-IX in FIG. 2, FIG. 10 is a perspective view of a leg member attached to the central portion of the support base, and FIG.
10 is a sectional view taken along line XI-XI in FIG. 12, FIG. 12 is a sectional view taken along line XII-XII in FIG. 2, and FIG. 13 is a sectional view taken along line XIII-XIII in FIG. (A) ... Floor material, (1) ... Supporting substrate, (2) ... Covering material,
(3) (4) ... gap, (5) (6) ... leg member, (9) ...
Wiring outlet (outlet mounting hole), (10) ... inner lid,
(11) ... substrate, (12) ... substrate body, (12a) ... bent piece,
(13)… Press-molded reinforcing plate, (13a)… Bulging rib, (1
6) ... Opening, (17) ... Step.

Front page continuation (72) Masahiro Oka, 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited (72) Inventor, Yumi Aoki 1015, Kamedotachu, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited (72) Inventor Masaru Fujimura 623-139 (72) Ishikawa-cho, Kashihara-shi, Nara Prefecture (72) Inventor Shigeru Kobayashi 65-5 Miyayama, Samukawa-cho, Takaza-gun, Kanagawa Prefecture (72) Motoko Miura 2-6-1 Marunouchi, Chiyoda-ku, Tokyo (56) References: Kaikaihei 2-85737 (JP, U) Kaikaihei 2-93445 (JP, U)

Claims (2)

[Scope of utility model registration request] 1. A rectangular support base (1) is constructed by combining at least four isosceles-triangular steel plate substrates (11) in a plane, and the substrates (11) are mutually connected. Are formed in the support base body with a gap therebetween to form two gaps (3) and (4) in a diagonal direction of the support base body, and a flexible single cover material (on the upper surface of the support base body (1) ( 2) are joined together, and each of the substrates (11) has a downwardly-positioned bent piece (12a) for positioning on the periphery thereof.
A press-formed reinforcing plate (13) having a corresponding shape having a downward bulging rib (13a) for reinforcement along the vicinity of the peripheral edge of the substrate body (12) was positioned by the bent piece (12a) on the lower surface of In a state where they are joined in an overlapping manner, and the supporting substrate (1) is provided with an adjoining substrate (1) at the corner and the center.
1) A floor material for a free access floor, characterized in that leg members (5) and (6) that straddle each other are attached in such a manner as to allow the swing of the substrate (11). 2. An opening (16) is formed at a portion where a substrate body (12) and a press-molded reinforcing plate (13) overlap each other in at least one of substrates (11) constituting a supporting substrate (1). In addition, the stepped portion (17) is formed by the peripheral edge of the opening of the reinforcing plate (13) protruding inward from the peripheral edge of the opening of the substrate body (12), and the stepped part (17) has a center portion. Lid (10)
The flooring material for a free access floor according to claim 1, wherein the floor covering material (2) is in a non-bonded state on the upper surface of the inner lid (10) while being detachably fitted.