JPH10273995A - Electromagnetic shielding door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the electromagnetic shielding function of a door opening in its entirety. SOLUTION: An electromagnetic shielding door is provided with of a three- side door frame 71 composed of an electromagnetic shielding material and integrally formed on three sides i.e., both sides and an upper surface of a door opening, a door 70 composed of the electromagnetic shielding material openably and closably fitted in the frame 71, shut-off pieces 71c formed at three sides of the three-side door frame 71 so as to be projected toward the door opening side, a metal box 1 for a gasket fixed to the three side door frame 71 along the shield piece 71c, a metal cover 6 fixed so as to cover the shut-off piece 71c and the box 1, and a conductive gasket 3 incorporated in the box 1, and adapted to be pressed against the door 70.

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 an electromagnetic shielding building in which an electromagnetic shielding layer is formed on floors, ceilings, walls and window openings by using an electromagnetic shielding material to form an electromagnetic shielding space.

[0002]

2. Description of the Related Art When a radio communication system using radio waves is adopted, regulations of the Radio Law regarding the used frequency band 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 disclosed such an electromagnetic shielding building, for example, in Japanese Patent Publication No. 6-99972 and Japanese Patent Publication No.
Japanese Patent Publication No. 9973, Japanese Patent Publication No. 7-16118, and Japanese Patent Publication No. 6-76706 propose a shielding structure of a building frame and an outer wall. Japanese Patent Publication No. Hei 6-13822 discloses a structure for shielding the entrance and exit of a building.
407, Japanese Patent Publication No. 5-79790, Japanese Patent Publication No. 3
Japanese Patent Application Laid-Open No. 58557/1999 proposes a shielding structure for a window opening. Further, Japanese Patent Publication No. 3-62320, Japanese Patent Publication No. 3-44972, Japanese Patent Publication No. 3-62318, and Japanese Patent Publication No. 5-34159 propose a ceiling and a shielding structure for each layer.

FIG. 2 is a view showing the outline of the configuration of an electromagnetic shielding building according to the present invention. The wall 40 is made of, for example, a metal mesh, a metal foil (film), a non-woven fabric, or other conductive fibers for the inner wall of the frame. The electromagnetic shielding layer is formed by applying a sheet or the like, or applying a conductive paint, or a board using such an electromagnetic shielding layer formed on one side. The ceiling 50 and the floor 60 are also constructed in the same manner as the wall 40, or use panels to which an electromagnetic shielding material is attached.
The window 30 is formed by forming an electromagnetic shielding film on one or both sides of the window glass by using an electromagnetic shielding material in the same manner as described above, and connecting the electromagnetic shielding film to a sash frame to form an electromagnetic shielding layer on the wall 40 and the window 30. Are electrically connected integrally. Door 70
Uses a panel made of an electromagnetic shielding material, and when the door is closed, the door 70
Is electrically connectable to the three-sided door frame 71 provided on the wall 40 and the floor 60.

[0004] In this way, the building is not divided into one electromagnetic shielding space, but each floor is partitioned by an electromagnetic shielding material on the upper and lower ceilings and floors, or a wall between rooms is partitioned on each floor by the electromagnetic shielding material. This makes it possible to configure a plurality of independent electromagnetic shielding spaces for each floor or each room.

[0005]

When a high-performance electromagnetic shield is to be achieved, a part that greatly affects the performance is a door opening. In particular, there is a problem that electromagnetic waves are easily leaked from a gap between the door and the three-way frame, and it is difficult to achieve a desired electromagnetic shielding performance as a whole as a door opening.

An object of the present invention is to solve the above-mentioned problem and to provide an electromagnetic shielding door capable of improving the electromagnetic shielding performance of the entire door opening.

[0007]

In order to achieve the above object, an electromagnetic shielding door according to the present invention comprises a door three-way frame 71 made of an electromagnetic shielding material integrally formed on both sides of a door opening and three sides on an upper surface.
A door 70 made of an electromagnetic shielding material that is openably and closably mounted in the door three-sided frame; a blocking piece 71c formed on three sides of the door three-sided frame so as to protrude toward the door opening side; A metal gasket box 1 fixed to a three-way frame along the door, a metal cover 6 fixed so as to cover the blocking piece and the gasket box, and a door housed in the gasket box. And a conductive gasket 3 which can be pressed. Note that the numbers added to the above configuration are compared with the drawings for easy understanding of the present invention, and the present invention is not limited thereto.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an electromagnetic shielding door 1 according to the present invention.
It is sectional drawing which shows embodiment.

At the door opening of the wall 40, a three-sided door frame 71 integrally formed on both sides and the upper surface thereof is attached.
Is attached to open and close freely. The three-way door frame 71 is made of an electromagnetic shielding material, and is electrically connected to the electromagnetic shielding material of the wall 40. The three-way door frame 71 includes an indoor side frame 71a and an outdoor side frame 71b.
The indoor side frame 71a and the outdoor side frame 71b have blocking pieces 71c and 71d protruding toward the door opening side.
c and 71d are integrated by welding.

A metal gasket box 1 is fixed to a corner of the indoor side frame 71a along a three-way door frame 71 at a corner where a blocking piece 71c is located. The gasket box 1 is slidable in the gasket box 1 by a pressing mechanism 2. The stored conductive gasket 3 is stored. The pressing mechanism 2 slides the support member 5 by rotating the screw 4, and moves the conductive gasket 3 to the door 7.
This is a mechanism for pressing it to zero. Blocking piece 7 of outdoor frame 71b
A metal cover 6 is fixed to 1d and the gasket box 1 so as to cover it, and a door stop 7 is provided on the cover 6 so as to reduce the impact on the conductive gasket 3 when the door is closed. . Further, conductive gaskets 9 that are in contact when the door 70 is closed are fixed to three sides of the indoor side frame 71a.

The floor 60 is provided with a floor frame 10 made of an electromagnetic shielding material facing the lower part of the door 70, and is electrically connected to the electromagnetic shielding material of the floor 60. A footprint 11 made of an electromagnetic shielding material is fixed on the floor frame 10, and a conductive gasket 12 that contacts the lower end of the door 70 is provided on the footrail 11. A conductive gasket 14 that is moved up and down by a vertically moving mechanism 13 is mounted below the door 70. The vertical movement mechanism 13 includes a rod 16 that contacts the door three-way frame 71 when the door is closed.
The conductive gasket 14 is located above when the door 70 is open, and is pressed by the footrail 11 when the door 70 is closed.
A conductive gasket 15 that contacts the floor frame 10 when the door 70 is closed is fixed to the lower surface of the door 70.

In the electromagnetic shielding door having the above structure, the electromagnetic waves leaking from the gap between the door three-side frame 71 and the floor frame 10 are shielded by the conductive gaskets 3, 9, 12, 14, and 15, and Electromagnetic waves that try to leak from a very small gap between the gasket box 1 and the gasket box 1
The electromagnetic shielding performance can be further improved because the shielding piece 71c and the cover 6 provided in the first unit 1 shield the electromagnetic wave.

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made. For example, in the above embodiment, the three-way door frame is formed of two members, but may be integrally formed of one member.

[0014]

As is apparent from the above description, according to the present invention, a three-sided door frame made of an electromagnetic shielding material integrally formed on both sides and an upper surface of a door opening, A door made of an electromagnetic shielding material mounted to be openable and closable, a blocking piece formed on three sides of the door three-way frame so as to protrude toward the door opening side, and fixed to the door three-way frame along the blocking piece. Metal gasket box, and a metal cover fixed to cover the blocking piece and the gasket box,
With the conductive gasket housed in the gasket box and capable of being pressed against the door, the electromagnetic shielding performance of the entire door opening can be improved.

[Brief description of the drawings]

FIG. 1 is a sectional view showing one embodiment of an electromagnetic shielding window of the present invention.

FIG. 2 is a diagram showing a schematic configuration of an electromagnetic shielding building according to the present invention.

[Explanation of symbols]

1 ... gasket box, 3 ... conductive gasket, 6
... Cover, 70 ... Door 71 ... Door frame, 71c, 71d ... Block

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masanori Okuyama 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Yasuto Iseda 2-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd.

Claims (2)

[Claims] 1. A door three-sided frame made of an electromagnetic shielding material integrally formed on both sides and an upper surface of a door opening, and a door made of an electromagnetic shielding material openably and closably mounted in the door three-sided frame. A blocking piece formed on three sides of the door three-way frame so as to protrude toward the door opening side, a metal gasket box fixed to the door three-way frame along the blocking piece, and a box for the blocking piece and the gasket. An electromagnetic shielding door comprising: a metal cover fixed so as to cover a box; and a conductive gasket housed in the gasket box and capable of being pressed by a door. 2. The electromagnetic shielding door according to claim 1, wherein the conductive gasket is slidable in a door direction by a pressing mechanism.