JPH09116290A - Electromagnetic shielding structure - Google Patents

Abstract

(57) [Abstract] [Problem] To perform electromagnetic shielding with low cost and simple construction. SOLUTION: The outer wall 2 is provided with an electromagnetic shield 5 mainly composed of a metal curtain wall, the roof 3 is provided with an electromagnetic shield 6 made of a metal panel, and the floor 4 on the lowest floor is provided with a metal mesh or The electromagnetic shielding material 7 made of metal foil is provided, and the electromagnetic shielding materials 5 and 7 on the outer wall and the floor are overlapped with each other with the outer wall sandwiched therebetween.

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. In addition, instead of a single 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.

[0006] By the way, in the case of repairing up to the outer wall, another wall is often provided outside the outer wall. There are relatively many types of metal curtain walls. Therefore, by using this metal curtain wall as an electromagnetic shielding material and considering their mutual connection, a building with electromagnetic shielding can be constructed relatively easily.

The present invention is to solve the above-mentioned problems, and as a part of such renewal measures, when a metal curtain wall is provided on the outer wall, the metal curtain wall is used as an electromagnetic shielding material, a floor, It is an object of the present invention to provide an electromagnetic shielding structure capable of constructing an electromagnetic shielding space with low cost and simple construction by considering a roof and its mutual connection.

[0008]

Therefore, in the electromagnetic shielding structure of the present invention, the outer wall is provided with an electromagnetic shielding material mainly composed of a metal curtain wall, and the roof is provided with an electromagnetic shielding material composed of a metal panel. An electromagnetic shielding material made of a metal mesh or a metal foil is provided on the floor of the lower floor, and the outer wall and the electromagnetic shielding material of the floor overlap each other with the outer wall interposed therebetween.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show one example of the electromagnetic shielding structure of the present invention, FIG. 1 is a schematic diagram showing the overall configuration, FIG. 2 is a sectional view showing the structure of the portion A of FIG. 1, and FIG. Of A
2 is a cross-sectional view showing a cross section different from that of FIG. 2 in a structure of a portion, FIG. 4 is a cross-sectional view showing a structure of a B portion in FIG. 1, and FIG. 5 is a cross sectional view showing a structure of a C portion in FIG.

In FIG. 1, an existing building 1 constitutes a frame having no electromagnetic shielding performance. Due to a renewal, an electromagnetic shielding material 5 mainly composed of a metal curtain wall is provided on the outer wall 2, and a roof is provided. 3, an electromagnetic shielding material 6 made of a metal panel is provided, and an electromagnetic shielding material 7 made of a metal mesh or a metal foil is provided on the floor 4 at the bottom floor.
Is grounded. This makes it possible to cover the ceiling, floor, and all six surfaces of the surrounding outer wall with the electromagnetic shielding material, thereby constructing an electromagnetic shielding space R independent of the outside. It should be noted that the metal curtain wall should be installed in a place where it can be seen easily from the outside, and it is not necessary to install it in a place where there is an adjacent building.

FIG. 2 shows a cross section of an outer wall having no metal curtain wall in the structure of part A of FIG.
Is composed of an outer wall body 2a, a mortar layer 2b, and a spray tile 2c. At the time of renewal, a support member 9 made of an angle member is fixed to the outer wall body 2a, and an electromagnetic shielding material 5 made of a metal mesh is attached to the support member 9, The spray tile 10 is constructed from above.

FIG. 3 shows a cross section of an outer wall provided with a metal curtain wall in the structure of the portion A of FIG. Window 11
Is an existing sash frame 12 attached to the outer wall body 2a.
The sash frame 13 is fitted into the sash and is incorporated. The double glazing 1 having the electromagnetic shielding layer 14 on the fitting sash frame 13
5 is fitted, and the double glass 15 includes a setting block 16, a backup material 17, and a sealing material 18.
And is fixed to the sash frame 13 by using. Therefore, at the time of renewal, by removing the conventional glass and then incorporating the fitted sash frame 13 in which the double glass 15 having the electromagnetic shielding performance is fitted into the sash frame 12,
You can easily renew the window opening.

On the other hand, for the outer wall 2, a supporting member 9 made of an angle member is fixed to the outer wall body 2a, an electromagnetic shielding member 5 made of a metal curtain wall is attached to the supporting member 9, and a joint between adjacent electromagnetic shielding members 5 is attached. Is fixed to the outer wall body 2a with bolts 19 and the conductive sealing material 20 is embedded in the joint. The electromagnetic shield layer 14 of the window portion 11 and the electromagnetic shield material 5 of the outer wall 2 are electrically connected to each other by the setting block 16, the backup material 17, the sealing material 18, the fitting sash frame 13 and the sash frame 12 which are made of a conductive material.
Done through.

FIG. 4 shows the structure of part B of FIG.
In this case, the waterproof layer 21 is applied on the outer wall body 2a, the electromagnetic shielding material 6 made of a metal panel is provided thereon, and the electromagnetic shielding material 5 made of the metal curtain wall on the outer wall side is connected to the connecting member 22 made of an aluminum headstock. It is electrically connected by.

FIG. 5 shows the structure of the portion C in FIG. 1. In the renewal of the floor 4, the existing tile carpet is peeled off, the electromagnetic shielding material 7 made of metal mesh or metal foil is laid, and then the mortar 23 is used. The end of the electromagnetic shielding material 7 extends upward along the inner side of the outer wall body 2a, and the electromagnetic shielding material 5 and the outer wall body 2a are made of a metal curtain wall on the outer wall side.
The electromagnetic waves are prevented from entering and leaking by overlapping with each other. It is desirable that the extension length be 5 times or more the wall thickness of the outer wall body 2a.

Note that the present invention is not limited to the above example, and various modifications are possible. 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.

As is apparent from the above description, according to the present invention, when a metal curtain wall is provided on the outer wall, the metal curtain wall is used as an electromagnetic shielding material,
By considering the roof and the connection between them, the electromagnetic shielded space can be constructed with low cost and simple construction.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an example of an electromagnetic shielding structure of the present invention and showing an overall configuration.

FIG. 2 is a cross-sectional view of an outer wall of the structure of part A of FIG. 1 without a metal curtain wall.

FIG. 3 is a cross-sectional view of an outer wall provided with a metal curtain wall in the structure of part A of FIG.

FIG. 4 is a cross-sectional view showing a structure of a B part in FIG.

5 is a cross-sectional view showing a structure of a C portion in FIG.

[Explanation of symbols]

1 ... Building, 2 ... Outer wall, 3 ... Roof, 4 ... Floor, 5, 6, 7 ...
Electromagnetic shielding material R ... Electromagnetic shielding space

Claims (1)

[Claims] 1. An electromagnetic shield mainly composed of a metal curtain wall is provided on the outer wall, an electromagnetic shield made of a metal panel is provided on the roof, and an electromagnetic shield made of a metal mesh or a metal foil is provided on the bottom floor. A material is provided, and the electromagnetic shielding material for the outer wall and the floor are configured to overlap with each other with the outer wall sandwiched therebetween.