JPH0651027Y2 - Electromagnetic wave shield room - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a structure for mounting an electromagnetic wave shielded room, particularly a door at its entrance and exit.

2. Description of the Related Art Electromagnetic wave shielded rooms need to ensure sufficient electrical connection in all parts of the peripheral wall in terms of their functions. Therefore, even at the entrance / exit, the door is opened and closed via a shield gasket or metal contact pieces (fingers). It was firmly and electrically connected to the peripheral door stop.

However, recently, it has become necessary to carry heavy objects into an electromagnetic wave shielded room, and for example, an electromagnetic wave shielded room used as a medical electroencephalogram examination room needs to carry in a patient. In such a case, the patient is carried in while being placed on the wheeled transfer bed, but in the conventional electromagnetic wave shielded room, the lower frame member of the storage frame, that is, the sliding member, has a quadrangular cross section and does not contact the ground. Because of the large steps, this sling hindered the smooth passage through the wheeled bed, and the moving bed had to be lifted each time it was loaded or unloaded, which was extremely inconvenient. Therefore, it has been considered to remove the slings of the storage frame over the entire length, but doing so causes a problem that the electromagnetic wave shielding performance is deteriorated and the electromagnetic wave shielding chamber can no longer be put to practical use.

The purpose of this invention is to solve the above-mentioned problems of the prior art and not only to ensure sufficient electromagnetic wave shielding performance at the sliding portion of the entrance and exit, but also to allow the moving head, carriage, etc. to pass smoothly. In addition, it is very convenient, and the structure of the lower part of the entrance and exit and the lower part of the door is simplified to provide an electromagnetic wave shielded room which is easy to install.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention has at least an inner surface and an upper surface covered with a metal cover plate at a lower end portion of an entrance and exit, and is gradually inclined upward from the outside toward the inside of the room. At the lower end of the openable door provided with a door slide and having a metal surface plate and having a metal surface plate, a gasket body electrically connected to the metal surface plate of the door and having elasticity and a conductive material covering the surface of the gasket body are provided. A conductive gasket composed of a conductive covering member is attached in a downwardly projecting manner so that the lower end of the conductive gasket comes into contact with the inclined upper surface of the metal covering plate of the sliding member when the door is closed. There is.

Embodiment Next, an embodiment of the present invention will be described in detail with reference to the drawings.

In the drawings, the electromagnetic wave shielded room (1) is of a built-in type and is assembled on a concrete wall (G) inside a building. The electromagnetic wave shielded room (1) is provided with a doorway (2), which is provided with a door (5) that can be opened and closed. The door (5) is made of a heat insulating core material (9) made of expanded polyurethane resin, expanded phenol resin or the like, and a surface plate (6) made of aluminum (including an aluminum alloy, the same applies hereinafter) covering both surfaces of the core material (9). ) (6) and a synthetic resin frame (10) arranged on the periphery of the panel.

Then, the sliding door (3) which is covered with a stainless steel cover plate (4) at the lower end of the entrance / exit (2) of the electromagnetic wave shielded room (1) and which is gradually inclined upward from the outside toward the inside (3).
On the other hand, a flexible conductive gasket (8) is attached to the lower end of the door (5) so as to project downward.

Here, the conductive gasket (8) is composed of a gasket main body (18) having elasticity and a conductive coating member (19) covering the surface thereof.

As the gasket body (18), a flexible one made of sponge such as neoprene or silicone, or hollow rubber is used. Although the conductive covering member (19) is a copper foil as shown in the figure, a wire mesh, a woven or non-woven cloth of metal fibers, another metal foil or the like can be used.

The conductive gasket (8) is held by a mounting member (20) having a substantially U-shaped cross section fixed to the lower end of the door (5) by a screw (12), and is mounted so as to project downward, and its upper end is The lower surface extension (6) of the aluminum face plate (6) of the door (5)
The upper surface of the inclined surface (4a) of the stainless steel cover plate (4), which is in contact with (a) and is electrically connected, and whose lower end (8a) is the sliding member (3) when the door (5) is closed.
It is designed to come into contact with.

The floor (13) of the electromagnetic wave shielded room (1) has a conductive sheet (16) made of copper foil between upper and lower insulating plates (14) (15) made of plywood laid on the upper surface of the concrete wall (G). ) Is interposed, and a finishing decorative plate (17) is further laid on the upper insulating plate (14).

Then, the front edge overhanging portion (16a) of the conductive sheet (16) made of copper foil is bent upward and brought into contact with the inner surface of the stainless steel covering member (4) of the sliding member (3). There is.

In the electromagnetic wave shielded room (1), the conductive gasket (8) is composed of a gasket main body (18) having elasticity and a conductive coating member (19) covering the surface thereof, and has flexibility as a whole. Therefore, when the door (5) is closed, the lower end portion (8a) of the sliding door (3) follows the inclined upper surface (4a) of the stainless steel cover plate (4) and the gasket body (18) and the conductive material. The heat-resistant covering member (19) is deformed,
So-called surface contact. Therefore, the electromagnetic wave shielding effect can be achieved very effectively and surely.

It should be noted that, in the illustrated example, the scraper (3) is composed of the stainless steel covering member (4) itself, but if necessary for strength, the scraper (3) is provided with an internal core material (not shown). And a covering member (4).

Further, the metal constituting the surface plate (6) of the door (5) and the covering member (4) of the sliding member (3) is not limited to those described in the above embodiment, and other metals may be used. In addition, at least the inner surface and the upper surface of the sliding member (3) are made of metal in order to secure electrical connection with the conductive gasket (8) at the lower end of the door (5) and the conductive sheet (16) of the floor (13). It may be covered by the covering member (4).

Effects of the Invention As described above, the electromagnetic wave shielded room according to the present invention is provided with a metal sliding plate at the lower end of the entrance, at least the inner surface and the upper surface of which are inclined upward from the outside toward the inside. A gasket body electrically connected to the metal surface plate of the door and having elasticity, and a conductive coating member covering the surface of the door body, which is provided at the doorway and has a metal surface plate and which can be opened and closed. The conductive gasket consisting of the above is attached so as to project downward so that the lower end of the conductive gasket comes into contact with the inclined upper surface of the metal covering plate of the sliding door when the door is closed. The electromagnetic wave shielding performance can be ensured, and since the shoe slide is gradually inclined upward from the outside toward the room, the step between the front end of the shoe slide and the ground is very small,
Therefore, the moving head and the dolly can be smoothly passed, which is very convenient. Further, according to this invention, the structure of the lower part of the entrance and exit and the lower part of the door is simplified, and the equipment is easy.

Further, in particular, according to the electromagnetic wave shielded room of the present invention, since the conductive gasket is composed of the gasket main body having elasticity and the conductive coating member covering the surface of the main body, the conductive gasket has flexibility as a whole. In the closed state,
The gasket main body and the conductive covering member are deformed along the inclined upper surface of the stainless steel covering plate whose lower end is slidable, and so-called surface contact occurs. Therefore, there is an effect that the electromagnetic wave shielding effect can be achieved extremely effectively and surely.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view of an essential part of an electromagnetic wave shielded room according to an embodiment of the present invention, and FIG. 2 is a schematic perspective view of the electromagnetic wave shielded room. (1) …… electromagnetic wave shielded room, (2) …… entrance,
(3) …… Sliding, (4) …… Metal cover plate, (4a) ……
Inclined upper surface, (5) …… door, (6) …… metal surface plate,
(8) …… conductive gasket, (8a) …… bottom end, (1
8) …… Gasket body, (19) …… Conductive coating member.

Claims (1)

[Scope of utility model registration request] 1. A sliding member (3) whose lower end portion of an entrance / exit (2) is covered with a metal cover plate (4) at least on an inner surface and an upper surface thereof and which is gradually inclined upward from the outside toward the inside of the room.
At the lower end of the openable and closable door (5) provided with the doorway (2) and having the metal surface plate (6),
A flexible conductive gasket (8) comprising a gasket main body (18) electrically connected to the metal surface plate (6) and having elasticity, and a conductive coating member (19) covering the surface of the gasket main body (18), When the door (5) is closed, its lower end (8
a) is the slanted upper surface (4) of the metal cover plate (4) with the slide (3)
An electromagnetic wave shielded room that is installed so as to project downward so as to contact a).