JP2539220Y2 - Electromagnetic wave shielding wall - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic wave shielding wall formed by using a precast plate provided with an electromagnetic wave shielding member.

[0002]

2. Description of the Related Art In an intelligent building equipped with a computer and a large number of OA equipments, in order to operate these equipments without hindrance, measures against electromagnetic interference to eliminate the influence of electromagnetic waves arriving from outside the building are taken. Has been taken.

[0003] For example, measures are taken to stretch a wire mesh electromagnetic shield on the inner surface of a concrete frame provided on the outer wall of a building, or to attach a metal plate of an electromagnetic wave shielding material to the outer wall of the building. .

[0004]

[Problems to be Solved by the Invention] The construction method in which an electromagnetic shielding body is stretched inside the building outer wall or a metal plate of an electromagnetic wave shielding material is stuck in any case because of the work performed at the construction site. Not only is there a problem in terms of realization, but there is also a problem that homogeneity cannot be maintained because of the manual construction method.

[0005] The present invention has been made in view of the above problems, and its object is to reduce the labor required for installation without requiring any installation work of the electromagnetic wave shielding member at the construction site. An object of the present invention is to provide an electromagnetic wave shielding wall capable of improving efficiency and improving the durability of the electromagnetic wave shielding member.

Another object of the present invention is to provide an electromagnetic wave shielding wall capable of ensuring electromagnetic wave shielding performance at a connection portion between precast plates.

[0007]

According to the electromagnetic wave shielding wall of the present invention, the electromagnetic wave shielding member is formed by a precast plate (half PC plate).
Attached to the entire back surface of the pre-cast plate, and provided with a superposed part where the electromagnetic wave shielding member extends from the side of the pre-cast plate, into the concrete pouring space between the front and back surfaces of the pre-cast plate, In addition to disposing a plate-shaped joint member with bolts protruding on it, casting concrete in the space to form a precast plate, and installing the precast plate thus formed side by side, the electromagnetic shielding member The electromagnetic wave shielding member of a plate-shaped precast plate in which the overlapping portions are juxtaposed is superimposed, the bolt connecting member is inserted between bolts protruding from the electromagnetic wave shielding member, the nut member is fastened to the bolt, and the electromagnetic wave shielding is superimposed. It is characterized in that the member is fixed and concrete is cast on the back surface of the precast plate.

[0008]

[0009]

The electromagnetic wave shielding member provided on the back surface of the precast plate shields the transmission of electromagnetic waves from the outside.

[0010] Electromagnetic waves that enter from the connection between the attached precast plates are shielded by an electromagnetic shielding member that covers the connection in a superimposed manner.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side sectional view of an electromagnetic wave shielding wall composed of an attached precast plate and concrete cast on the back surface thereof, and FIG. 2 shows a precast plate with an electromagnetic wave shielding member attached thereto. FIG. 3 is a side sectional view showing a connecting portion between the precast plates.

The precast board of the present invention (half PC board)
Is configured as follows. That is, a metal mesh previously formed of an electromagnetic wave shielding material on the back of the precast plate,
An electromagnetic wave shielding member 2 such as a metal foil or a metal fiber is provided, and a reinforcing bar (not shown) and precast plates 1, 1 'are provided.
The joint members 6, 6 (see FIG. 3) for connecting each other are provided, and concrete is poured into the joint members. In addition,
Its outer surface is made of a finishing material such as a stone or a tile in advance. At this time, as shown in FIG. 2, the electromagnetic wave shielding member 2 has a covering portion 2A extending from, for example, about 10 cm from four sides of the precast plate 1 and the area of the back surface of the precast plate 1 '. An electromagnetic wave shielding member 2 '(see FIG. 3) having the same area is used. Thereby, the precast plate 1 having the above-mentioned covering portion 2A
Then, a precast plate 1 'with an electromagnetic wave shielding member having the same area as the area of the back surface is manufactured.

[0014] In addition to the above-mentioned mounting means, it is also possible to manufacture the precast plate by attaching an electromagnetic wave shielding member to the back surface of the manufactured precast plate.

Reference numeral 5 shown in FIG.
The joint which fills the gap of the connection part between 1 'is shown.

An example of forming a building electromagnetic wave shielding wall by the half-precast formwork method will be described. A precast plate 1 having an electromagnetic wave shielding member with a covering portion 2A is described.
, And precast plates 1 ′ having no covering portion are alternately arranged adjacent to each other, and the electromagnetic wave shielding members 2, 2 ′ are arranged.
To the inside of the steel frame or outside of the steel frame.

Next, as shown in FIG. 3, on the end face of the electromagnetic wave shielding member 2 'of the precast plate 1' having no coating portion 2A, the coating portion 2A of the precast plate 1 having the electromagnetic wave shielding member 2 with the coating portion 2A is provided. And then screw the bolts 7, 7 to the joint members 6, 6 from the direction of the arrow,
A plate member 8 having an area covering this overlapping portion is inserted into bolts 7 and 7 and fastened to joint members 6 and 6 by nuts 9 and 9 to connect the two. Thereby, the gap between the connecting portions of the precast plates 1 and 1 ′ is covered by the covering portion 2 </ b> A of the electromagnetic wave shielding member 2.

Next, on the back surfaces of the electromagnetic wave shielding members 2, 2 ',
After-cast concrete 3 is cast to form an electromagnetic wave shielding wall of the building.

With the above construction, the electromagnetic waves entering from the outside of the building are blocked by the electromagnetic wave shielding members 2 and 2 ', and the electromagnetic waves are prevented from being transmitted through the connecting portions between the precast plates 1 and 1'. The coating portion 2A prevents electromagnetic waves from entering.

In this embodiment, the precast plate 1,
Although the example using 1 'has been described, it is also possible to use only the precast plate 1, and in this case, the connecting portion is the covering portion 2
A is doubly coated. Further, the area of the electromagnetic wave shielding member may be configured to have the covering portions on two adjacent side surfaces of the precast plate, and the outer wall may be configured only by the precast plate. In addition, epoxy-based conductive paint,
It can be applied to the back surface of the precast plate at the time of manufacture, and can be used as an electromagnetic wave shielding member.

[0021]

As described above, according to the present invention, an electromagnetic wave shielding member having an overlapped portion extending from the side is attached to the back surface of the precast plate, and the gap between the front surface and the back surface of the precast plate is provided. In the concrete pouring space, a plate-like joint member with bolts projecting from the back of the precast plate to the outside is erected, and concrete is poured into the space to form a precast plate. The precast plates formed as described above are juxtaposed, the electromagnetic wave shielding members of the plate-shaped precast plate in which the overlapping portions of the electromagnetic wave shielding members are juxtaposed are superimposed, and the bolt connecting members are fitted to the bolts projecting from the electromagnetic wave shielding members. It is configured so that the electromagnetic wave shielding member is fixed by fastening the nut member to the bolt, so that the bolt connecting member is inserted between the bolts and the nut member is inserted. Fastening to wear, by a simple operation of the fixed installation of the overlapping portion of the electromagnetic wave shielding member of precast plates reliably can be firmly carried out.

Furthermore, since the electromagnetic wave shielding member provided on the back surface of the precast plate attached to the building frame is cast with post-cast concrete, the electromagnetic wave shielding member provided on the back surface is sealed and protected by the post-cast concrete. Therefore, it is possible to improve the durability of the electromagnetic wave shielding performance.

[0023]

[Brief description of the drawings]

FIG. 1 is a side sectional view of an electromagnetic wave shielding wall composed of an attached precast plate and a post-cast concrete placed on the back side thereof.

FIG. 2 is a perspective view of a precast plate to which an electromagnetic wave shielding member is attached, as viewed from the electromagnetic wave shielding member side.

FIG. 3 is a side sectional view showing a connection portion between precast plates.

[Explanation of symbols]

1 and 1 'precast plate, 2 and 2' electromagnetic wave shielding member, 2A covering part of electromagnetic wave shielding member, 3 post-cast concrete, 4 tiles, 5 joints, 6 joint members

Claims (1)

(57) [Scope of request for utility model registration] An electromagnetic wave shielding member is attached to the entire back surface of a precast plate (half PC plate), and a superposed portion in which the electromagnetic wave shielding member extends from a side of the precast plate is provided. In the concrete pouring space between the back and the back, a plate-shaped joint member having bolts protruding outward from the back of the precast plate is provided, and concrete is poured into the space to form the precast plate. Formed, the formed precast plate is juxtaposed, the electromagnetic wave shielding member of the plate-shaped precast plate in which the overlapping portion of the electromagnetic wave shielding member is juxtaposed, and the bolts projecting from the electromagnetic wave shielding member are bolted to each other. A member is inserted and a nut member is fastened to the bolt to fix the superposed electromagnetic wave shielding member. Electromagnetic shielding wall, characterized by being configured to pouring the concrete.