JPH0629347Y2 - Free access floor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a free access floor in which a carpet laid on the upper surface of a floor panel in which wiring grooves are formed can be accurately positioned and easily attached and detached.

<Prior Art> The inventors of the present invention can solve the problem of congestion wiring of power cables and communication cables by providing continuous wiring grooves in the vertical and horizontal directions on a floor surface covered with a large number of floor boards. Is proposed in. This allows not only underfloor wiring but also wiring near the upper surface of the free access floor, so in addition to the advantage that wiring cables can be stored separately on the top and bottom of the floor board, wiring is possible after the free access floor is assembled. However, there is an advantage that the work can be performed without the need to remove the floor plate for moving or repairing the wiring cables that occur due to daily layout changes.

The wiring groove is covered with a groove cover having a channel-shaped cross section to eliminate the groove recess.

On the other hand, there are many cases in which a carpet is laid on the free access floor to form a design floor. Conventionally, there are two types of carpet such as an adhesive type that uses an adhesive or heat fusion, and a simple laid type. If the carpet is adhered as in the former case, the problem of misalignment does not occur, but the adhering work takes time and the carpet is contaminated during construction. In the case of the latter laid type, if a person walks on it or if luggage is moved, there is a problem in that it easily shifts and overlaps, or is greatly biased. In view of this, rubber, resin, etc. are integrated on the back surface to increase the weight and prevent displacement, but this is not an effective solution. Therefore, it is customary to carry out this processing and then carry out simple adhesion. Further, in this case, in the process of laying a large number of sheets, when the carpet position does not coincide with the floor panel and it becomes necessary to remove the floor panel later, it is not necessary to remove the surrounding panels. It was necessary to remove even the hanging carpet.

Therefore, various studies were carried out to provide effective positioning and a displacement prevention function to the laid carpet, and a structure is provided on the back surface of the carpet, which is provided with a locking portion composed of a convex portion or a concave portion that fits with the concave and convex portions of the floor surface on which the carpet is laid. Was developed and proposed earlier in Japanese Patent Application No. 63-94087 (Japanese Patent Application Laid-Open No. 63-288109).

With such a structure, the fixed carpet can be accurately laid in a predetermined position by the positioning action, and even if a person walks on it or luggage is moved, the fixed carpet can be placed on a floor such as a free access floor. Lock each other with the surface,
Although the shift can be prevented, it is necessary to make a work such as providing a convex or concave engaging portion on the back surface of the carpet.

<Problems to be solved by the invention> Therefore, even if the carpet is a flat surface without any work on the back surface, which is usually used, the carpet can be laid accurately at a predetermined position and the bonding work can be performed. The issue was to develop a free access floor that would not move when people walked on top of it or when moving luggage.

<Means for Solving the Problems> The inventor of the present invention has paid attention to the fact that the groove cover in the wiring groove continuously provided vertically and horizontally on the floor surface is provided along the edge portion of the floor plate. The floor cover against the groove cover (2)
By providing the carpet (3) and the positioning mechanism (4) having a shape protruding along the edge of (1), the above-mentioned problems are solved.

The protruding shape of the carpet (3) and the positioning mechanism (4) referred to here are the protrusions (4a) protruding upward from the upper surface of the groove cover (2).
And intermittent protrusions (4b), aligned protrusions, and the like. The ridges or the like having a small width can be made to be in a state of being hidden between the carpets that abut with each other by reducing the length thereof. The ridge or the like having a large width may be designed to have a high height so that it is exposed between the abutting carpets and trimmed.

In order to provide a protruding mechanism (3) positioning mechanism (4) for this groove cover (2), when the groove cover (2) is made of synthetic resin, the extruded one is projected on the upper surface. It is sufficient to use a nozzle having a hole shape such as that for forming a mold or to slightly change the molding die in the case of injection molding. This groove cover
(2) is not limited to synthetic resin and may be made of metal. In that case, it can be formed by a usual means such as cold roll forming, formation of a protruding portion by ordinary press forming, cutting, and spot welding.

<Operation> Such a free access floor of the present invention is a floor board (1)
The carpet (3) positioning mechanism (4) with the protruding shape provided on the groove cover (2) simply lays the carpet without changing the structure of the conventional product without any work on the carpet or the carpet (3). Accurate positioning and misalignment prevention are possible simply by squeezing the edge of the lever to a ridge or the like.

<Embodiment> An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a vertical sectional view showing a state of a free access floor according to a first embodiment of the present invention. Fig. 2 is its perspective view, and Fig. 3
The figure is a perspective view of the groove cover in the embodiment.

In the free access floor of the first embodiment shown here, the floor plate (1) is a square plate made of steel, and the adjacent floor plate (1) is
So that the wiring groove (5) is formed between (1)
3) is formed in the shape of a flange, and the upper and lower connecting passages (6) are partially
Is provided. There is a step between the abutting edge portion (13) and the floor surface (14) of the floor plate, which determines the depth of the wiring groove (5). A wiring groove (5) continuous in the vertical and horizontal directions is formed on the floor surface (14) on which a large number of such floor plates (1) are spread. In this example, the wiring groove (5) is thus formed between the side surfaces of the adjacent floor boards (1). A communication cable (7) can be wired in the wiring groove (5) as shown in the figure. And if a cross-shaped groove cover (2) as shown in FIG. 3 or a direct groove cover (2) with a notch in the middle as shown in FIG. It can be uneven.

The floor plate (1) is supported by the support legs (10) from below. The support leg (10) is composed of a base portion, a rising portion, and an upper support portion which is horizontal and has a locking projection for engaging the floor plate. A power cable (11) can be wired under the floor plate (1) as in the conventional case, and the communication cable (7) and the power cable (11) can be separated from each other.
Despite being on the floor, the communication cable (7) is covered by the groove cover and the carpet (3) above it and cannot be seen from the surface.

As is apparent from these figures, the groove cover (2) is provided with a carpet (3) positioning mechanism (4) having a shape protruding from the upper surface of the cover. This positioning mechanism (4)
Is a ridge (4a) protruding upward from the upper surface of the groove cover (2) as shown in FIG. 3, an intermittent ridge (4b) as shown in FIG. It is a protrusion or the like. The degree of protrusion from the upper surface of the groove cover (2) is smaller than the thickness of the carpet in the examples of FIGS. In addition, its width is also small. There, they hide in the carpet.

FIG. 5 is a vertical sectional view showing a second embodiment of the present invention. In this example a steel top plate forming the floorboard (1)
The wiring edge (15) between the bottom plate (16) and the bottom plate (16) is in the upper part close to the floor surface, and wiring is provided between the adjacent floor plates (1) supported by the support legs (10). Grooves (5) are formed. On the wiring groove (5), a cap-shaped groove cover (2) made of a long plate with locking ribs is fitted from above.

The ridge (4) of the positioning mechanism (4) provided in this groove cover (2)
The c) has almost the same height as the thickness of the carpet (3), and its width is also very wide compared to the examples so far. The wide ridges (4c) appearing on the carpet give the carpet a edging design.

FIG. 6 is a vertical sectional view showing a third embodiment of the present invention. In this example, the floor plate (1) is an inorganic floor made of calcium silicate or the like. The wiring groove (5) is formed between the adjacent floor plates (1) by providing a step at the edge. A cable receiver (19) is inserted along the stepped portion, and a groove cover (2) is provided on the upper portion thereof.

The groove cover (2) has been a ridge or a protrusion in the above examples, but in this example, it is a protrusion (or protrusion) (4d) having a T-shaped cross section and a wide upper portion. As a result, not only is the carpet positioned, but it also has a stable holding function after being laid.

<Effects of the Invention> Since the free access floor of the present invention has the above-described structure, it is possible to lay and replace the carpet accurately by simple work. Therefore, the effect of improving work efficiency was obtained. In addition, even if the carpet is laid alone, it has a convenient structure that does not curl up when the carpet is moved or the top has a wide ridge.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a state of a free access floor according to a first embodiment of the present invention. FIG. 2 is a perspective view of the same, and FIG. 3 is a perspective view of a groove cover in the same embodiment. FIG. 4 is a perspective view of the linear groove cover. 5 and 6 are vertical cross-sectional views of another embodiment. (1) Floorboard, (2) Groove cover (3) Carpet, (4) Positioning mechanism (5) Wiring groove

Claims (1)

[Scope of utility model registration request] 1. A floorboard for a groove cover (2) between floorboards (1), (1)
A free access floor characterized in that a carpet (3) having a shape protruding along the edge of (1) is provided with a positioning mechanism (4).