JPH0676706B2 - Electromagnetic shielding method for curtain wall connection - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an electromagnetic shielding method for a curtain wall connecting portion that constitutes an outer wall of an electromagnetic shielding building.

[Conventional technology]

Intelligent buildings are a representative of modern office buildings. In intelligent buildings, joint use of information communication equipment such as complex electronic exchanges and computers,
Information is communicated with inside and outside the building. In this information communication, an information network based on a data highway method using an optical fiber cable or a coaxial cable has been studied and proposed.

However, in the data highway method that uses optical fiber cables and coaxial cables, it is necessary to stretch the optical fiber cables and coaxial cables all over the interior of the intelligent building, which requires extra work time and labor for cable laying. This will be the case.

If radio waves are used for information communication in the building, it is not necessary to lay a cable, but in this case, on the other hand, noise radio waves are emitted to the outside, so that the radio waves will be regulated at frequencies within a certain range. On the other hand, there arises a problem that the system malfunctions due to external radio waves, internal TV intermediate frequency, radio microphone radio waves, and the like.

Therefore, in wireless communication, there is a demand for a technology that does not emit electromagnetic wave noise in its own building in order to prevent mutual interference and, on the contrary, does not emit electromagnetic wave in order not to affect other buildings. In other words, technology that does not emit radio waves and does not enter is required.
(Electro-Magnetic Interference Alliance) was born, and those who do not put radio waves have immunity (devices are disturbed by external electromagnetic noise), and their respective technological developments are in progress.

In addition, a technology that does not emit or emit electromagnetic waves is necessary in computer centers, hospitals, and AV conference rooms that handle precision electronic devices. In particular, recently, it has been found that radio waves emitted from a computer or a display can be easily caught by a relatively simple device, so that eavesdropping on radio waves leaking from electronic devices handling information such as computers has become a problem. It was

As external noise sources, there are trains, high-voltage lines, vehicle radios, etc., and in places with poor electromagnetic environment near trains, high-voltage lines, etc.,
Buildings that do not allow electromagnetic waves from these (electromagnetic wave shielding buildings)
Is required.

Thus, the demand for electromagnetically shielded buildings is in various places.
Therefore, the applicant of the present invention has developed an intelligent building that enables communication inside a building by radio waves by using an electromagnetic wave shielding member to construct an opening for entrance and exit of a body and a window, and having an electromagnetic wave shielding structure for the entire building. I have already applied.

When constructing an electromagnetically shielded building, the inner and outer spaces are shielded by an outer wall, and there is a metal curtain wall that is one of the exterior materials. Generally, the panel joint portion of the curtain wall is arranged from the side of the curtain wall face plate 11 to the rain barrier 12 and the wind barrier 13 as shown in FIG.
As described above, the rubber annular ring (gasket) is double arranged in consideration of the relative displacement amount, wind pressure resistance, watertightness, airtightness, and the like.

[Problems to be Solved by the Invention]

However, although the metal curtain wall itself has an electromagnetic shielding performance, not only the adjacent curtain walls are not integrated, but the structure of the conventional panel joint section is completely vulnerable to the penetration of radio waves. ing. Therefore, there is a problem that the electromagnetic shielding performance as a whole is deteriorated due to the electric wave leakage in the panel joint portion.

The present invention solves the above problems, and an object of the present invention is to provide an electromagnetic shielding method for a curtain wall connecting portion that can enhance the electromagnetic shielding performance at the panel joint portion.

[Means for Solving the Problems]

Therefore, the present invention is a method for electromagnetically shielding a curtain wall connecting portion in which two annular ring gaskets are provided. At least one of the gaskets is a conductive gasket, and the pair of annular ring gaskets includes a curtain wall connecting portion. It is characterized in that the expanded metal is arranged inside and one of the curtain walls is fixed to one curtain wall with screws.

[Action]

In the electromagnetic shielding method of the curtain wall connection portion of the present invention,
The first conductive shield layer is formed by using a conductive material for at least one of the annular rings (gaskets) that are double arranged in consideration of the amount of correlated displacement, wind pressure resistance, watertightness, airtightness, etc. Since the second electromagnetic shielding layer is formed by disposing the expanded metal on the outer wall, high electromagnetic shielding performance can be secured on the outer wall portion without deteriorating various functions and performances at the curtain wall connection portion. .

〔Example〕

 Hereinafter, embodiments will be described with reference to the drawings.

FIG. 1 is a diagram showing an embodiment of an electromagnetic shielding method for a curtain wall connecting portion according to the present invention, in which 1 is a curtain wall face plate, 2 is a rain barrier, 3 is a wind barrier, 4 is expanded metal, and 5 is Shows upright.

As described above, conventionally, the joint portion of the curtain wall has the double arrangement of the rain barrier 2 and the wind barrier 3 from the side of the curtain wall face plate 1, but in the present invention, the wind barrier 3 has an annular ring of conductivity. A magnetic gasket is used to form a primary electromagnetic shielding structure, and the expanded metal 4 is arranged inside the secondary electromagnetic shielding structure. The expanded metal 4 is, for example, a zinc plating, and is screwed on one side in consideration of the relative displacement. Then, by using different conductive materials for the wind barrier 3 and the expanded metal 4 of the conductive gasket, it is possible to form a double electromagnetic shielding layer with different shapes and different conductive materials. Also,
By electrically connecting the expanded metal 4 and the wind barrier 3 of the conductive gasket and electrically connecting the adjacent curtain walls via the expanded metal 4, the exterior material is integrated as a whole, and the exterior material is integrated. It is possible to improve the electromagnetic shielding performance of the part.

The present invention is not limited to the above embodiment, and various modifications can be made. For example, in the above embodiments, the wind barrier is made of a conductive gasket, but the rain barrier may also be made of a conductive material.

〔The invention's effect〕

As is apparent from the above description, according to the present invention, as in the conventional case, the gasket of the annular ring is double arranged and the electromagnetic shield is used for at least one of the gaskets, and the expanded metal is arranged inside thereof. Therefore, it is possible to secure desired electromagnetic shielding performance in the connection portion without deteriorating various functions and performances of the curtain wall.
Moreover, a high electromagnetic shielding performance on the outer wall can be obtained by the combined effect of the combination of two different materials and the difference in shape due to the primary shielding using the conductive gasket and the secondary shielding using the expanded metal.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of an electromagnetic shielding method of a curtain wall connection portion according to the present invention, and FIG. 2 is a diagram showing a conventional configuration example of the curtain wall connection portion. 1 ... Curtain wall face plate, 2 ... Rain barrier, 3 ... Wind barrier, 4 ... Expanded metal,
5 ... cubic.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Toshiyuki Ishikawa 2-16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (56) References JP-A-59-27048 (JP, A) 60-130694 (JP, U) Actually opened Sho 61-140011 (JP, U)

Claims (1)

[Claims] 1. A method of electromagnetically shielding a curtain wall connecting portion in which two annular ring gaskets are provided, wherein a pair of annular ring gaskets, at least one of which is a conductive gasket, is provided at the curtain wall connecting portion. An electromagnetic shielding method for a curtain wall connecting portion, characterized in that the curtain metal is arranged, an expanded metal is arranged inside thereof, and only one is fixed to one curtain wall with screws.