JPH0983178A - Electromagnetic shield floor - Google Patents

Abstract

(57) Abstract: To provide an electromagnetic shielding floor which can perform electromagnetic shielding by low cost and simple construction, and which is excellent in impact resistance, peeling property and water resistance. A mortar layer (12) coated on a floor slab (2).
And a metal mesh 11 embedded in the mortar layer,
The carpet 10 is provided on the mortar layer, and the metal mesh is electrically connected to the electromagnetic shield 7 of the wall. A nonwoven fabric layer may be laid instead of the mortar layer 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of constructing an independent electromagnetic shielded space in a building structure such as an office building.

[0002]

2. Description of the Related Art Nowadays, in many office buildings, LANs and other communication lines are used to construct their own communication information processing systems. When such a system becomes large-scale, securing a communication line becomes a problem, and the wiring of cables becomes complicated, and when the room or the device is rearranged, the amount of work for changing the wiring becomes large. Therefore, the adoption of a wireless communication system using radio waves is also attracting attention as one method.

[0003] However, when a radio communication system using radio waves is adopted, regulations of the Radio Law regarding the frequency band to be used pose a problem. Therefore, in order to freely select and set the frequency band to use and adopt a unique wireless communication method without being restricted by the Radio Law, the space inside the building was electromagnetically shielded from the outside. Construction of an electromagnetic shielding building is indispensable. The applicant has already described such an electromagnetically shielded building in, for example, Japanese Patent Publication No. 6-99972, Japanese Patent Publication No. 6-99973, Japanese Patent Publication No. 7-16118, and Japanese Patent Publication No. 6-76706. Proposed outer wall shielding structure, Japanese Patent Publication No. 6-99971, Japanese Patent Publication No. 6-33699, Japanese Patent Publication No. 6-13822.
Japanese Patent Publication No. 6-63407, Japanese Patent Publication No. 5-79790, and Japanese Patent Publication No. 3-58557 propose a window opening shielding structure. Further, Japanese Patent Publication No. 3-62320, Japanese Patent Publication No. 3-45972, and Japanese Patent Publication No. 3-623.
No. 18, Japanese Patent Publication No. 5-34159 proposes a ceiling and a shielding structure for each layer.

As seen in these proposals, the electromagnetic shielding building uses an electromagnetic shielding material for a frame and a wall structure, and also uses an electromagnetic shielding material for openings such as windows and entrances along the outer wall of the building. By covering the entire surface with electromagnetic shielding material,
The space in the building can be configured as one electromagnetic shield space independent of the outside. Further, instead of using one electromagnetic shielded space in the building, the floors and ceilings on each floor are separated by electromagnetic shields, or the walls between rooms are separated by electromagnetic shields on each floor. Alternatively, a plurality of independent electromagnetic shielded spaces can be configured for each room.

[0005]

However, since the above-mentioned conventional electromagnetic shielding technology is mainly applied to a newly built building, an existing building having no electromagnetic shielding performance is used as an electromagnetic shielding building. , When building an independent electromagnetic shielded space for each floor or each room (hereinafter referred to as "renewal"), the frame or mist,
Since the structure of the building such as walls and slabs must be put into the hands, the construction work becomes large and it is not realistic in terms of cost and construction period. Therefore, in the case of renewal, new measures for constructing the electromagnetically shielded space are required.

In the case of a wall or a glass window in the renewal, it is relatively easy to provide an electromagnetic shielding material such as a metal mesh, a metal foil, a conductive fiber sheet, and a conductive paint between the inner surface and the interior material. It can be realized, but in the case of the floor, desks, chairs, shelves and other furniture equipment are placed,
Since it is necessary to regularly clean the floor surface, there is a problem that it is difficult to form an electromagnetic shielding layer on the surface in terms of impact resistance, peeling resistance or water resistance.

The present invention solves the above-mentioned problems, and as a part of such renewal measures, it is possible to perform electromagnetic shielding by low cost and simple construction, as well as impact resistance, peelability and An object is to provide an electromagnetic shielding floor excellent in water resistance.

[0008]

To this end, the electromagnetic shielding floor of the present invention according to claim 1 has a mortar layer coated on a floor slab, a metal mesh embedded in the mortar layer, and the mortar. A carpet disposed on a layer, wherein the metal mesh is electrically connected to an electromagnetic shielding material of a wall, and the electromagnetic shielding floor according to the present invention is a floor slab. A non-woven fabric layer laid on the non-woven fabric layer, a metal mesh embedded in the non-woven fabric layer, and a carpet disposed on the non-woven fabric layer, and the metal mesh is electrically connected to an electromagnetic shielding material of a wall. Is characterized by.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an example of the electromagnetic shielding floor of the present invention.

Ceiling slab 1, floor slab 2, outer walls 3, 4,
The window glass 5 and the ceiling 6 constitute an existing skeleton that does not have electromagnetic shielding performance, and in order to make the internal space R surrounded by these electromagnetic shielding spaces, the inside of the outer walls 3, 4 is renewed. The electromagnetic shielding material 7 is provided in the above, the electromagnetic shielding material 8 is provided under the ceiling 6, and the electromagnetic shielding material 9 is provided inside the glass window 5. Each of the electromagnetic shields 7 to 9 is formed by sticking a sheet using a metal mesh, a metal foil, or a conductive fiber, or by applying a conductive paint, and the electromagnetic shields 7 to 9 are electrically connected to each other. Connected to.

Regarding the floor, the existing tile carpet 1
After removing 0, the mortar is coated and the metal mesh 11 is laid, and then the mortar is further coated so that the metal mesh 11 is embedded in the mortar layer 12.
The end of 1 is electrically connected to the electromagnetic shield 7 of the outer walls 3 and 4. Then, the tile carpet 10 is laid. Thereby, the ceiling, the floor, and all the six walls of the surrounding walls can be covered with the electromagnetic shielding material to construct the electromagnetic shielding space R independent from the outside.

FIG. 2 is a sectional view showing another example of the electromagnetic shielding floor of the present invention. In this example, the metal mesh 11 is embedded in the non-woven fabric layer 13. After removing the existing tile carpet 10, the non-woven fabric layer 13 is laid and the end of the metal mesh 11 has an electromagnetic shielding material for the outer walls 3 and 4. Only by electrically connecting with 7, it is possible to construct an electromagnetic shielded space R independent from the outside by covering all 6 surfaces of the ceiling, floor and surrounding walls with the electromagnetic shield.

The present invention is not limited to the above example, and various modifications can be made. For example, in the above example, the case where an existing building having no electromagnetic shielding performance is renewed as an electromagnetic shielding building has been described, but a new building may be similarly configured. Further, in the above example, the example of the tile carpet has been described, but a carpet of a type that covers the floor surface by one piece or by dividing the floor surface may be used.

As is clear from the above description, according to the present invention, it is possible to provide an electromagnetic shielding floor which is excellent in impact resistance, peeling property and water resistance, as well as capable of electromagnetic shielding with low cost and simple construction. Can be provided.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of an electromagnetic shielding floor of the present invention.

FIG. 2 is a cross-sectional view showing another example of the electromagnetic shielding floor of the present invention.

[Explanation of symbols]

1 ... Ceiling slab, 2 ... Floor slab, 3, 4 ... Outer wall, 5 ... Window glass, 6 ... Ceiling 7-9 ... Electromagnetic shielding material, 10 ... Tile carpet, 11 ...
Metal mesh 12 ... Mortar layer, 13 ... Non-woven fabric layer, R ... Electromagnetic shielding space

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Hitoshi Sakurai 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Sumio Mukai 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction (72) Inventor Koji Nagata 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Tadahiko Suzuki 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd.

Claims (2)

[Claims] 1. A mortar layer coated on a floor slab, a metal mesh embedded in the mortar layer, and a carpet disposed on the mortar layer, the metal mesh shielding the wall from electromagnetic waves. An electromagnetically shielded floor that is electrically connected to the timber. 2. A non-woven fabric layer laid on a floor slab, a metal mesh embedded in the non-woven fabric layer, and a carpet arranged on the non-woven fabric layer, the metal mesh shielding the wall from electromagnetic waves. An electromagnetically shielded floor that is electrically connected to the timber.