JP3026175B2 - Legs of floor panel forming electromagnetic wave shielding floor and method of forming electromagnetic wave shielding floor using leg seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leg and a leg of a floor panel forming a free access floor corresponding to an electromagnetic wave shield building required in a radio age such as a PHS, a portable telephone, and a wireless LAN using weak radio waves. The present invention relates to a method for forming an electromagnetic wave shielding floor using a method.

[0002]

2. Description of the Related Art The free access floor, which forms a space that can be used for twisted pair cables such as telephone lines, coaxial cables, electric wiring, ventilation pipes and optical fiber cable wiring, and arrangement of vibration absorbing members, has great advantages besides for communications. Yes, it is indispensable for intelligent buildings. As a method of constructing the free access floor, there is a method in which synthetic resin legs are placed side by side on a floor panel having a space below and fixed and laid. Conventionally disclosed technology related to the leg of the free access floor includes Japanese Utility Model Laid-Open No. 58-75833.
JP-A-07-82865, JP-A-07-2078
No. 96 and the like.

On the other hand, regarding communication, there is a trend of shifting from a conventional wired network to a wireless system due to innovation in information transmission technology. Although the wireless system has advantages in terms of facilities and economy compared to the wired network, the problem of wireless spreading in unspecified directions can be predicted,
There is an urgent need to maintain communication confidentiality and prevent information leakage. Therefore, technical development of electromagnetic shielding corresponding to the wireless era has begun.
No. “Title of Invention: Electromagnetic shielding structure of assembly plate”, JP-A-63
No. 172498 "Title of Invention: Electromagnetic shielding structure in building frame", JP-A-01-287375 "Electromagnetic shielding method for living room", JP-A-04-221153 "Electromagnetic shielding system ceiling", JP-A-09-2009 No. 13530 “Electromagnetic shielding building” has been developed.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a floor-mounted free-access floor in which metal floor panels are laid side by side on a base to form an electromagnetic wave shield on the floor panels. The challenge is to provide a free access floor with an electromagnetic wave shielding function that can respond to the age of wireless. Another object of the present invention is to improve the leg of the conventional free access floor of the mounting type so as to enable electromagnetic wave shielding. PH
30M used for S, pager, wireless LAN, etc.
Hz to 3 GHz,
It is possible to prevent security equipment protection, privacy information leakage, and information leakage for office needs, and reduce the influence on malfunction of information equipment.

It is an object of the present invention to improve such a synthetic resin leg seat to have an electrical connector function for electromagnetic wave shielding (high frequency shielding). Also,
It is an object to provide a method of forming an electromagnetic wave shielding floor using an improved leg seat. The challenge is to develop a next-generation free-access floor with an underfloor space and an electromagnetic wave shielding function.

The leg seat disclosed in the prior art has a structure in which two or four equally spaced holes are formed in the seat plate, and the legs of the floor plate are inserted into the holes to connect the floor plates. Just insert the lower end of the floor panel leg into the hole, and when tilting in any direction, the floor panel leg sometimes floated up,
In conventional leg seats, electrical connectivity has not been an issue. Note that it is essential to make the leg seat made of a hard synthetic resin in terms of elasticity, strength, and workability, and the leg seat was actually made of a semi-rigid polyethylene resin or hard rubber.

A floor panel (3) forming an electromagnetic wave shielding floor used in the present invention is a so-called low dining table type or table type as shown in FIG. It is made of die-cast aluminum with a rib (33) and legs (31) provided on the inside, leaving an edge.
In the past, non-conductive objects such as chemical fibers were sufficient for conventional floor materials, but in the age of information infrastructure utilizing electromagnetic waves (high frequency), it is necessary to review the materials of the floor materials themselves. In the floor panel (3), the thickness of the front plate (32) is made thinner and lighter, the reinforcing ribs are formed vertically higher, and the ribs (33) that are curved and continuous with the legs (31) are made higher vertically.

A floor panel (3) forming an electromagnetic wave shielding floor is a die-cast material of an aluminum alloy in which a top plate (32) has a square or hexagonal rectangular shape in plan view and a leg (31) is provided at a corner of the back surface. And a rib (33) which rises substantially vertically inside the outer peripheral contour is formed in a lattice shape, a radial shape or a honeycomb shape on the back surface.

It is possible to change the shape of a triangular table such as a three-legged table, or to change to another conductive material. The curved rib portion (33) in which the rib (33) reaches the leg (31)
1) is a core part in compensating the intensity, and the intensity greatly changes depending on the height. The floor panel (3) that forms the electromagnetic wave shielding floor has a front plate (32) with a thickness of about 1 mm, and a rib (33) provided inside the outer peripheral contour on the back surface stands substantially vertically. The dimensions and shape of the floor panel (3) forming the electromagnetic wave shielding floor can be arbitrarily changed in design. For example, the floor (31) may be formed in a square shape, or a number of small holes may be formed in the front plate (32). Can be designed according to. Further, it is also possible to provide an opening window for taking out wiring, or to provide a folded piece (34) having a thin portion that can be cut off on site. In a free access floor on which such floor panels (3) are laid, however, not all of the adjacent floor panels (3) are electrically connected to each other, and rather, minute gaps are left on all sides. Had been constructed.

[0010]

According to the present invention, there is provided a free access floor (1) in which a space is formed between the floor panel (7) and the floor using the conductive floor panel (3). It has a shielding function and is particularly an improvement of the leg seat (2) used together. The leg seat (2)
A floor panel (3), which is bonded and fixed at a predetermined position on the floor and forms a plurality of electromagnetic wave shielding floors, is connected and juxtaposed.

Here, the present invention provides a rectangular floor panel (3) having conductive legs (31), and two or more cylindrical portions (21) into which the legs (31) of the floor panel (3) are inserted. In the free access floor (1) formed by connecting with the provided synthetic resin legs (2), the legs (31) inserted into the respective tubular portions (21) of the legs (2). The present invention is to provide a floor panel leg for forming an electromagnetic wave shielding floor, wherein a conductive connecting band (250) for electrically connecting each floor panel (3) in contact with and adjacent to each other is provided continuously. . An electric contact is provided on the leg seat (2) to make the entire floor panel (3) an electrically equivalent surface, and this can be grounded to shield electromagnetic waves. In this configuration, the floor panel (3) forms an electrically isolating shielding surface, and the legs (31) having a height (the conductive material having free electrons becomes thicker) are electrically isolatable and grid-like. It is arranged at the position of the intersection, so that the electromagnetic wave shielding effect is effectively exhibited. When the leg (2) is attached along the direction of polarization of the radio wave to be used, for example, the electrical isolating portion of the floor panel (3) to be laid is limited to a straight line or a parallel line. As a limitation, the leg seat (2) can also be arranged. In addition, the building can be used as required in the case of renewal or as necessary.
In other words, an access floor having an economical electromagnetic wave shielding function such as specifying a shield area can be laid by selecting the position of the leg seat (2).

[0012] The conductive connecting band (250) is inserted and connected to the upper edge of each of the tubular portions (21), and more specifically, the leg (2) is connected to each of the tubular portions. (2
1) A vertical piece (22) is extended substantially half of the upper edge of the vertical piece (22). A vertical groove (252) is provided in the vertical piece (22), and a conductive connection band (250) is inserted and connected to the vertical groove (252). Suggest what you did. Also, a conductive connecting band (250) is provided continuously on the bottom surface of each of the tubular portions (21), or the conductive connecting band (250) is made of conductive paint, ) Is proposed.

The laying method using the leg seat (2) includes a leg seat (2) in which a conductive connection band (250) for electrically connecting the two or more respective tubular portions (21) is connected in advance. The present invention proposes a method for forming an electromagnetic wave shielding floor using legs, wherein the floor panels (3) are also electrically connected, and then several connected floor panels are sequentially laid and grounded.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a leg of a floor panel forming an electromagnetic wave shielding floor according to the present invention. FIG. 1 is a perspective view of a leg (2) of a floor panel forming an electromagnetic wave shielding floor according to the present invention, and FIG.
FIG. 4 is a partial side sectional view of a leg seat (2) loaded with a floor panel forming an electromagnetic wave shielding floor. FIG. 3 is a perspective view of a floor panel, FIG. 4 is a side view of the floor panel laid, and FIG. 5 is a perspective view showing two embodiments of a leg seat and a conductive connecting band having different shapes used in the present invention. FIG. 6 shows a conductive connection band provided on the bottom surface of the leg seat.

The leg seat (2) of the embodiment shown in FIG.
The floor panel (3) of the floor panel (3) in the free access floor (1) in which a large number of floor panels (3) forming a rectangular electromagnetic wave shielding floor having the legs (31) shown in FIG. ) For fixing the position of the electromagnetic wave shielding floor.
There are provided four cylindrical portions (21) for loading the legs (31) of the floor panels (3), and a part (approximately half) of the upper edge of each of the cylindrical portions (21) has a standing piece (22). ) Is extended and a vertical groove (25) having a round hole (251) below the standing piece (22).
2) A floor panel leg (2) for forming an electromagnetic wave shielding floor, wherein a conductive connection band (250) is inserted and connected to the floor panel (2).

The conductive connecting band (250) shown in FIG. 1 is made of a substantially cross-shaped good conductive metal in plan view, and has a tip bent at the tip by being inserted into the four vertical grooves (252). (25
3) is provided. The refracting piece (253) is connected to the standing piece (2).
It is provided so as to protrude into the inside of 2) and not to enter and exit the round hole (251). The refracting pieces (253) electrically contact the adjacent floor panels (3) by contacting the legs (31) inserted into the respective cylindrical portions (21), and firmly resilient the legs (31). 31) is fixed. Because of this configuration, even if a plurality of floor panels (3) are attached to the legs (31) of the floor panel (3) in advance and connected to each other, they do not come off. Then, by grounding (earthing) some of the leg seats (2) provided with the conductive connection bands (250) at arbitrary positions, the entire floor panel (3) is electrically equivalent to form an electromagnetic shielding floor. I do. In this way, the electromagnetic shield floor can be formed by the leg seat (2) provided with the conductive connection band (250). Since the leg (2) is replaceable, it is easy to change the existing floor using the aluminum floor panel of FIG. 3 to an electromagnetic wave shielding floor by replacing the leg (2) of the present invention.

The conductive connecting band (250) has a plate shape, a rod shape,
The shape is not a problem, and the leg (31) inserted at two or more places, in the embodiment, the leg (3) inserted at four places,
The configuration does not matter as long as 1) is electrically connected. FIG. 5 shows two different types of conductive connecting strips (250), one in the form of a ring surrounding and in contact with the four legs (31) and one in the form of a metal mesh cross. is there. Either one is adopted selectively. Further, as shown in FIG. 6, a cross-shaped metal plate is attached to the inside of the leg seat (2) so that the conductive connection band (250) is continuously provided on the bottom surface of each of the tubular portions (21). It may be something. The metal plate serving as the conductive connection band (250) may be attached to the back surface, penetrate the bottom plate, and expose the terminal inside the cylindrical portion (21). For example, the conductive connection band (250) may be coated with a conductive paint so as to be continuous on the inner surface of the four cylindrical portions (21). Any configuration is possible as long as electrical connection and stable mounting of the legs (31) are possible.

The cylindrical portion (21) has a cylindrical shape, and the internal shape of the cylindrical portion (21) is preferably tapered for stability during injection molding and loading during manufacture. In the embodiment of FIG. 1, the cylindrical portion (21) has a cylindrical shape, and the standing piece (22)
Has a semi-cylindrical shape.

The free access floor using the leg (2) according to the present invention can be laid as it is by a conventionally known laying method. The leg seat (2) having the above configuration is installed at a predetermined position on the floor, and floor panels (3) forming an electromagnetic wave shielding floor are sequentially set on the leg seat, and a carpet or the like is laid thereon, as shown in FIG. A free access floor (1) having an excellent electromagnetic shielding function is completed.

More preferably, the leg (2) is provided with a conductive connecting band (250) for electrically connecting the two or more cylindrical portions (21) according to the present invention. It is proposed that a number of floor panels (3) be electrically connected, transported to the site, and then laid sequentially as a set of several connected floor panels. In the method of forming an electromagnetic wave shielding floor using the leg seat (2), a predetermined number of legs (31) of the floor panel (3) are arranged side by side at a factory.
At the place where the four legs (31) are gathered, the leg seats (2) are sequentially put on and connected, sandwiched with cardboard paper, piled up on this cardboard paper in the same operation, and packed one after another. Is transported to the building site, turned upside down on the floor of the site, pulled out as a pair connected with the leg (2), and sequentially laid. Since several factories are connected, the time required for on-site construction is extremely reduced, which is economical, and there is no connection error and the leg (2) does not fall off. The conductive connection band (250) is hard to come off only by contacting the leg (31), and the leg seat (2) is inserted from above so that there is no leakage.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The leg seat (2) in FIG. 1 is formed by erecting a cylindrical portion (21) having a rectangular shape of 24 mm and a height of 35 mm and a standing piece (22). The four cylindrical portions (21) have a diameter of 10 mm and a depth of 20 mm. The conductive connecting band (250), which is a cross-shaped metal piece in FIG. 1, is a 1 mm wide metal plate and has a tip of 10 m.
It was folded m times to obtain a refraction piece (253). The floor panel (3) was connected using the leg seat (2) to lay a free access floor having an electromagnetic wave shielding function.

[0022]

The leg of the floor panel forming the electromagnetic wave shielding floor and the method of forming the electromagnetic wave shielding floor using the leg according to the present invention have the above-described configuration and operation. There are technical effects. According to a first aspect of the present invention, the individual floor panels forming the electromagnetic wave shielding floor are electrically connected to each other by a leg to shield the electromagnetic waves. In addition, since the conductive floor is grounded, there is an effect of preventing and reducing the generation of static electricity. Since the arrangement of the leg seats is optional, the conductive floor panel can be shielded from electromagnetic waves at any predetermined location or range such as planar or linear. Further, since the legs to be inserted into the leg seat need only be electrically connected, the conductive connecting band may be ring-shaped or the like, and may be of any shape or material. Where they meet)
A stable and reliable connection can be made. The second and third aspects of the present invention provide a free connection having an electromagnetic wave shielding function by electrically connecting the legs of the floor panel inserted into the legs with a substantially cross-shaped conductive connection band or the like corresponding to the shape of the legs. It provides an access floor. By using the leg seats, electrical connection is easy, excellent in on-site compatibility, and a conductive connection band has a high effect of preventing detachment, so that work can be efficiently performed in actual transportation, factory assembly and on-site construction.
In addition, a mode is also proposed in which a vertical groove is provided in a vertical piece provided on the center side of a leg seat to be loaded with a conductive connecting band. This assembly can provide a simple and stable connecting band. Claim 4 is to provide a conductive connecting band connecting in a cross shape in a plan view on the bottom surface of the tubular portion of the leg seat, and proposes a different connection form, and it is necessary to leave a space between the tubular portions. This is useful in certain cases (when wiring space is required). Claim 5 uses spraying conductive paint,
It is useful for inexpensive formation of the conductive connection band. Claim 6 relates to a method of forming an electromagnetic wave shielding floor using a leg of a floor panel in order to form an electromagnetic wave shielding floor, and significantly improves construction efficiency. As described above, the method of forming the electromagnetic wave shielding floor using the leg of the floor panel and the leg seat forming the electromagnetic wave shielding floor according to the present invention can be applied to a high-performance free access floor and a radio shielding era. It has functions and can meet the demands of the age of preventing information leakage.

[Brief description of the drawings]

FIG. 1 is a perspective view of a leg (2) of a floor panel forming an electromagnetic wave shielding floor according to the present invention.

FIG. 2 is a partial side sectional view of a leg seat (2) loaded with a floor panel forming an electromagnetic wave shielding floor.

FIG. 3 is a perspective view of a floor panel.

FIG. 4 is a partial side view of a free access floor on which floor panels are laid.

FIG. 5 is a perspective view showing two embodiments of differently shaped leg seats and conductive connecting bands used in the present invention.

FIG. 6 is a perspective view showing leg seats having different shapes and a conductive connection band provided on a bottom surface thereof.

[Explanation of symbols]

 (1) Free access floor (2) Leg (21) Tube (22) Standing piece (23) Seat plate (250) Conductive connection band (251) Round hole (252) Vertical groove (253) Refracting piece (3 ) Floor panel (31) Leg (32) Top plate (33) Rib (34) Folding piece (331) Curved rib part connected to leg (7) Base

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) E04F 15/18 E04F 15/024 602

Claims (6)

(57) [Claims] A synthetic resin having a rectangular floor panel (3) having conductive legs (31) and two or more cylindrical portions (21) into which the legs (31) of the floor panel (3) are inserted. Access floor (1) which is formed by connecting with plastic legs (2)
In each of the tubular portions (21) of the leg seat (2), a conductive connecting band (250) that contacts the inserted leg (31) and electrically connects each adjacent floor panel (3). ), And a floor panel leg for forming an electromagnetic wave shielding floor. 2. The leg of a floor panel forming an electromagnetic wave shielding floor according to claim 1, wherein said conductive connecting strips (250) are inserted and connected to upper edges of said respective tubular portions (21). . 3. The leg seat (2) is provided with a standing piece (22) extending substantially at half of the upper edge of each cylindrical portion (21),
The electromagnetic shielding floor according to claim 1 or 2, wherein a vertical groove (251) is provided in the standing piece (22), and a conductive connection band (250) is inserted and connected to the vertical groove (251). Floor panel leg seat. 4. The leg seat of a floor panel forming an electromagnetic wave shielding floor according to claim 1, wherein said conductive connecting band (250) is continuously provided on the bottom surface of each of said tubular portions (21). 5. The leg of a floor panel forming an electromagnetic wave shielding floor according to claim 1, wherein said conductive connecting band (250) is made of a conductive paint and applied to the leg. . 6. A synthetic resin comprising a square floor panel (3) having conductive legs (31) and two or more cylindrical portions (21) into which the legs (31) of said floor panel (3) are inserted. Access floor (1) which is formed by connecting with plastic legs (2)
In the above, the floor panel (3) is also electrically connected with a leg (2) in which a conductive connection band (250) for electrically connecting the two or more respective tubular portions (21) is connected in advance, A method of forming an electromagnetic wave shielding floor using legs is characterized by sequentially laying several connected floor panels.