JPH07300978A - Free access floor - Google Patents

Abstract

PURPOSE:To provide a pad with long service life which sufficiently prevent floor panels from being charged and does not deteriorate charging prevention function even by cleaning by burying a shock absorbing pad in a shock absorbing material with a part of a conductive metal wire braided in mesh exposed. CONSTITUTION:A shock absorbing pad 3 is positioned between a floor plate 1 and a support leg 2. In this case, the shock absorbing pad 3 is formed into disk shape, and a hole 3a through the projection 2a of the support leg 2 is formed at four locations. Next the lower half part of a conductive metal wire 3c braided in mesh is buried in the shock absorbing material 3b, and the upper half that is made in contact with the floor plate 1 is exposed. Also a conduction between the adjacent floor plates 1 is made with the conductive metal wire 3c so as to completely prevent the floor plates 1 from being charged. Thus instability of the floor plates 1 can be absorbed and also charging on them can be prevented for long time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a floor board and support legs for supporting the floor board, and is placed on a floor slab and laid so that a space is provided between the floor slab and the floor board. Regarding

[0002]

2. Description of the Related Art In a modern office, a free access floor is spread over a floor slab to form a double floor structure. At that time, in order to absorb the slight instability that may exist in the floorboard, a rubber cushion pad is interposed between the floorboard and the supporting legs, but it is a free access floor used in computer rooms and clean rooms. Uses a conductive buffer pad to absorb the instability of the floorboard and to prevent the floorboard from being charged. That is, by interposing a conductive buffer pad between the adjacent floor plate and the supporting leg that supports the floor plate, even if some of the floor plates are charged due to friction or the like, they are discharged to the adjacent floor plates one after another through the buffer pad. Moreover, it discharges into the floor slab through the support legs to prevent the floor board from being charged. Conventionally, conductive rubber in which a conductive material is mixed has been used as the conductive buffer pad.

[0003]

Since the above-mentioned conventional conductive buffer pad is formed of conductive rubber, it has a sufficient electric resistance for absorbing the instability of the floor plate, but has a considerable electric resistance. However, it was not always sufficient to prevent the electrostatic charge. In addition, since the surface of the conductive rubber is formed smooth, if detergent or dust enters during cleaning or repair work such as waxing, the continuity between the conductive rubber and the floor plate cannot be maintained. There was also. Further, the floor plate is repeatedly pressed by the walking of a person, and as a result, the conductive rubber is heavily worn and there is a problem in terms of service life. Therefore, the present invention can sufficiently prevent the floor plate from being charged with static electricity, and there is no fear that the antistatic function is deteriorated even by a cleaning operation or the like, and a conductive buffer pad between the floor plate and the supporting leg having a long service life is provided. The purpose is to provide.

[0004]

The present invention has been made to achieve the above object, that is, it has a plurality of floor plates and a plurality of support legs for supporting adjacent floor plates, respectively. In a free access floor with a cushion pad interposed between the floor plate and the support leg, the cushion pad is made of a conductive mesh that is braided in a mesh shape so that a part of the conductive metal wire is exposed on the upper surface side that contacts the floor plate. The free access floor is characterized by being formed by embedding a metal wire in a cushioning material. At that time, conductive rubber can be used as the cushioning material.

[0005]

[Function] Since a part of the conductive metal wire is exposed and adjacent floor boards are electrically connected to each other by this metal wire,
The antistatic function of the floor plate can be more sufficiently achieved as compared with the case of conduction by the conductive rubber. In addition, since the conductive metal wire is braided in a mesh shape and has irregularities, even if detergent or dust enters, the conductive metal wires enter only the recesses, and therefore the antistatic function does not deteriorate. Further, since the remaining portion of the metal wire is embedded in the cushioning material, it also has a function of maintaining the shape of the cushioning material and preventing deformation, thus prolonging the service life. Further, the conductive performance can be further improved by using a conductive rubber as the cushioning material.

[0006]

The present invention will be described with reference to the drawings. The drawings show an embodiment of the present invention, in which the free access floor has a plurality of floor boards 1 and a plurality of support legs 2, and each support leg 2 has one corner of each of four adjacent floor boards 1. I support you. In order to prevent displacement of each floor plate 1, four positioning protrusions 2a are provided on the upper surface of the support leg 2, and correspondingly, the positioning protrusions 2a are formed on the lower surfaces of the four corners of each floor plate 1. A concave portion 1a into which is inserted is formed. Floor board 1 and supporting legs 2
The buffer pad 3 according to the present invention is interposed between and. The cushioning pad 3 is formed in a disk shape as shown in FIG. 3, and has four holes 3a through which the positioning protrusions 2a of the support legs 2 pass.
The buffer pad 3 is formed at one place, and thus the buffer pad 3 is prevented from falling off. As shown in FIG. 4, the cushioning pad 3 is composed of a cushioning material 3b and a conductive metal wire 3c, and the conductive metal wire 3c of this embodiment is made of stainless steel. The conductive metal wire 3c is braided in a mesh shape,
The lower half part is embedded in the cushioning material 3b, but the conductive metal wire 3c on the upper surface side that abuts on the floor plate 1 is exposed.

This embodiment is formed as described above,
The upper surface side of the conductive metal wire 3c abutting on the floor plate 1 is exposed, and conduction between the adjacent floor plates 1 is performed by the metal wire 3c, so that the floor plate 1 is reliably prevented from being charged. Further, since the metal wire 3c is braided in a mesh shape and has irregularities, even if detergent, dust, or the like enters, it does not enter the recesses only, and the antistatic function does not deteriorate. Furthermore, since the lower half part of the metal wire 3c is embedded in the cushioning material 3b,
The cushioning material 3b is prevented from being deformed and the service life is extended. As the cushioning material 3b, a non-conductive rubber sheet can be used, and by using conductive rubber,
It is possible to further improve the conductive performance.

Next, FIG. 5 shows another embodiment. Although the cushioning pad of the above-mentioned embodiment is formed to have a circular outer surface shape, the cushioning pad 3 of this embodiment has the positioning protrusion 2a of the support leg 2.
Is formed in a cruciform shape in which a portion passing through is cut out, and therefore the hole 3a in the above-described embodiment is not provided. Other configurations are similar to those of the above-described embodiment, and therefore, the same effect as that of the above-described embodiment can be obtained.

[0009]

In the buffer pad according to the present invention, the conductive metal wire braided in a mesh shape is embedded in the buffer material so that a part of the metal wire is exposed, so that a free access floor using the buffer pad can be used. According to this, instability of the floor board can be absorbed, and the floor board can be reliably prevented from being charged for a long period of time.

[Brief description of drawings]

FIG. 1 is a plan view of a support leg showing a floor plate and a cushioning pad in phantom lines.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a plan view showing a buffer pad.

FIG. 4 is a vertical sectional view showing a buffer pad.

FIG. 5 is a plan view of another embodiment of the cushioning pad with the support leg shown in phantom.

[Explanation of symbols]

1 ... Floor board 1a ... Recessed portion 2
... Support legs 2a ... Positioning protrusions 3 ... Buffer pads 3
a ... hole 3b ... buffer material 3c ... conductive metal wire

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsutomu Sato 2-14-6, Kanda, Uchikanda, Chiyoda-ku, Tokyo Inside Ritsuden Electronic Service Co., Ltd. (72) Minoru Kaneko, 2--14, Uchikanda, Chiyoda-ku, Tokyo No. 6 Nitrate Electronic Service Co., Ltd. (72) Inventor Kazunobu Morikawa 2-14-6 Kanda, Uchida, Chiyoda-ku, Tokyo

Claims (2)

[Claims] 1. A free access floor having a plurality of floorboards and a plurality of support legs for supporting the floorboards adjacent to each other, wherein a cushioning pad is interposed between the floorboards and the support legs. The buffer pad is formed by embedding the conductive metal wire braided in a mesh shape in a buffer material so that a part of the conductive metal wire is exposed on the upper surface side in contact with the floor plate. Access floor. 2. The free access floor according to claim 1, wherein a conductive rubber is used as the cushioning material.