JPH0799044B2 - Free access floor structure - Google Patents

Description

[Detailed Description of the Invention] (a) Field of industrial application The present invention is a so-called
This relates to a free access floor structure.

(B) Conventional technology In order to secure a space for cables and pipes to crawl under the floor in an OA equipment room, etc., a unit type floorboard that can be laid out at a fixed interval on the foundation floor and this floorboard A free access floor structure composed of legs that are supported on the foundation floor at appropriate intervals may be used.
What is required of the floorboards used in this case is that even if the foundation floor surface has irregularities, the individual floorboards laid on it do not rattle.

For this reason, for example, Japanese Utility Model Publication No. 57-165732 discloses that the shape of the floorboard is triangular and legs are provided at respective corners of the floorboard for convenient three-point support.

(C) Problems to be solved by the invention However, if each of the corners is formed into an acute angle by simply making it into a triangular shape, it is weak in strength and is chipped due to a slight hit during carrying or construction. Or

Therefore, the above-mentioned triangular shape does not solve this point, and the floor plate described here has legs integrally fixed to it, so handling thereof should be avoided. difficult.

(D) Means for Solving the Problems Therefore, the present invention comprises a unit type floorboard laid on the foundation floor and legs for supporting the floorboard on the foundation floor at appropriate intervals. In the free access floor structure, the floor plate is formed in a triangular shape, and each corner tip is cut off to provide a cutout portion, and the leg is formed with a middle step surface and an upper surface, and the upper surface is the same as the upper surface of the floor plate. The above-mentioned problems are solved by providing a free access floor structure characterized in that the bottom surface of the floorboard is supported by the recessed portion without leaving a gap until the surface is formed.

(E) Action As a result, the corners of the floor plate are notched and have no sharp points, so the strength is strong. Since this floorboard is laid out on the foundation floor surface in large numbers, the missing parts are also gathered into a group of missing parts, and if the legs are fitted in here, it becomes an ideal space for leg installation. Become.

(F) Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 is a plan view of a free access floor structure according to the present invention, FIG. 2 is an enlarged sectional view taken along the line II-II of FIG. 1, FIG. 3 is a perspective view of another embodiment of a leg, and FIG. 4 is a floorboard. FIG. 5 is a perspective view of another embodiment of the combination of legs and legs, FIG. 5 is a plan view of another embodiment of the combination of floorboards and legs, FIG. 6 is a sectional view taken along line VI-VI of FIG. 5, and FIG. It is sectional drawing of the other Example of the combination of a floorboard.

First, the condition is that the unit type floorboard 1 is formed in a triangular shape. The triangle is preferably an isosceles right triangle. Next, the leading end of each corner is cut off to provide a cutout portion 2. The missing portion 2 may be formed by simultaneous molding at the time of manufacturing or may be formed by appropriately punching after manufacturing, but each corresponding corner portion (acute corner portion) may be formed. The notches 2 must have the same shape, and must have the same shape as a whole (above, see FIG. 1). In addition to this, the floor board 1 is made of two layers of a top sheet and a bottom sheet, is manufactured integrally, and various materials such as metal, resin, and inorganic material can be considered.

It is the legs 5 that support the floor plate 1 above the basic floor surface 3 with a certain space 4 left therebetween. In this case, the above-mentioned missing portion 2 of the floor plate 1 (when the floor plate 1 is laid, The set of the missing parts 2 appears at regular intervals). From this, this leg 5 has two steps, the middle step surface 5a supports the part of the back surface of the floor plate 1 where the above-mentioned missing portion 2 is formed, and the upper surface 5b part is the floor board 1 and the upper surface. It is preferable that the exposed shape is the same (see FIG. 2). The legs 5 and the material are also metal,
Various types such as resin and wood are used. Floor board 1 above
Due to the combination of the legs and the legs 5, all the floor boards 1 are supported at three points. On the other hand, from this leg 5 to the foundation floor 3
If the wirings 6 crawling in the upper space 4 are taken out on the floor board 1, the space can be effectively used, and notches or holes are made on the concrete floor board 1 etc. which is difficult to process. Wiring work is easy and quick because it does not need to be performed. For that purpose, holes 7 and 8 for wiring that lead from the underfloor space to the above-floor space are formed in the side surface (the portion existing in the space 4) 5c and the upper surface 5b of the leg 5. Various positions and shapes of these holes 7 and 8 are conceivable (see FIGS. 2 and 3). Further, the holes 8 on the upper surface 5b are not always open, but are appropriate. It is preferable that it can be opened only by notching.

A desired free access floor structure is constructed by using the combination of the floor plate 1 and the legs 5 as described above. Usually, a covering material 9 such as a carpet is attached to the floor plate 1 (this is also preliminarily attached to the floor plate 1 in advance. There are various types such as those that are integrally attached and those that are separately laid at the end of the construction). Therefore, the upper surface of the leg 5
It is convenient to set 5b so that it has almost the same height as floor board 1.

By the way, as for the floor plate 1 and the legs 5 described above, in short, each corner of the floor plate 1 is omitted to provide a missing portion 2, and the legs 5 can be fitted into the missing portion 2 to support each floor plate 1 at three points. If so, the combination is not limited to the above.
That is, the floor plate 1 and the legs 5 are first set into a triangular shape (see FIG. 4), the bottom 5d of the legs 5 are connected by a thin flexible sheet, and two floor plates 1 (unit: What is supported by a square or a rectangle (Fig. 5,
(See FIG. 6) and the like are also conceivable. However, in this case, unless the bottom portion 5d of the leg 5 is thinly formed of a flexible material, it does not follow the unevenness of the underlying base floor surface 3 when it is uneven. Further, it is conceivable to provide an auxiliary leg 10 at a proper position of the leg 5 for supporting the support by hitting the back surface only when the weight of the floor plate 1 is applied and the floor plate 1 hangs down by a certain amount (see FIG. 6). In addition, there are various types such as the one in which the floor plate 1 and the legs 5 are integrally attached to the covering material 9 (see FIG. 7).

(G) Effects of the Invention As described above, the invention is as described above, that is,
Since the corner portions of the floor plate 1 are cut off to provide the cutout portions 2, the sharpened portions, which are weak in strength, are eliminated and the strength is increased. Therefore, there is no longer any situation where this part is chipped off by a slight impact when handling it during transportation or construction. Further, since the legs 5 are fitted into the missing portions 2 to support the floorboard 1, the basic concept that each floorboard 1 is supported by three points can be maintained as it is. Therefore, each floor board 1 is stably supported even if the underlying base floor surface 3 has irregularities. Since the back surface of the floor plate 1 is supported by the middle surface 5a of the leg 5 and the upper surface 5b is fitted into the missing portion 2 to the same extent as the upper surface of the floor plate 1, this missing portion 2 is formed. This means that the space is effectively used, and the floorboard 1 can be supported very stably by considering the area, shape, etc. of the middle step surface 5a. In addition, if holes 8 and the like for wiring are formed in the legs 5 and the wiring 6 that crawls the space 4 below the floor plate 1 is taken out from here, the floor plate 1 and the like are given a special structure for that, Or, since no reworking such as drilling is required, wiring work is easy and the cost is low.

[Brief description of drawings]

1 is a plan view of a free access floor structure according to the present invention, FIG. 2 is an enlarged sectional view taken along the line II-II of FIG. 1, FIG. 3 is a perspective view of another embodiment of a leg, and FIG. 4 is a floorboard. FIG. 5 is a perspective view of another embodiment of the combination of legs and legs, FIG. 5 is a plan view of another embodiment of the combination of floorboards and legs, FIG. 6 is a sectional view taken along line VI-VI of FIG. 5, and FIG. It is sectional drawing of the other Example of the combination of a floorboard. (Code) 1 …… Floor plate 2 …… Missing part 3 …… Basic floor surface 5 …… Leg 5a …… Middle leg surface 5b …… Leg top surface 5d …… Leg bottom 7 …… Wiring hole 8… ... holes for wiring

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuru Fukushima 3-1848 Noda, Okayama City, Okayama Prefecture Oki Machine Co., Ltd. Okayamamoto Company (56) References JP-A-61-31567 Open 60-253655 (JP, A) Open 57-181840 (JP, U) Open 60-117944 (JP, U) Open 61-13638 (JP, Y2)

Claims (3)

[Claims] 1. A unit type floorboard (1) laid on a foundation floor surface (3), and legs (5) for supporting the floorboard (1) on the foundation floor surface (3) at appropriate intervals. A floor plate (1) in a free access floor structure composed of
Is formed into a triangular shape, and each corner tip is cut off to provide a cutout portion (2), and the leg (5) is formed with an intermediate step surface (5a) and an upper surface (5b), and this upper surface (5b) is formed. A free access floor characterized in that the bottom plate (1) is supported flush with the upper surface of the floor plate (1) into the missing portion (2), and the middle step surface (5a) supports the back surface of the floor plate (1). Construction. 2. A bottom portion (5) of a leg (5) which supports four corners in a rectangular shape by abutting the long sides of a plurality of floor plates (1).
The free access floor structure according to claim 1, wherein d) is connected by a thin sheet having flexibility. 3. A free access floor structure according to claim 1, wherein the legs (5) are provided with wiring holes (7), (8) for communicating from the underfloor space to the above-floor space.