JPH10252360A - Electromagnetic shielding door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance an electromagnetic shielding performance of a door opening as the whole. SOLUTION: There are provided a door three way frame which comprises an electromagnetic material where both sides and the top of a door opening are formed in on piece, double doors 70 which comprises an electromagnetic shielding material mounted openably in the three way door and a conductive gasket 23 which is mounted on the outer periphery of the double doors 70. In a meeting stile of the double doors 70, a bending piece 21a is provided on a door frame 21, thereby forming a gasket housing area 22 while the conductive gasket 23 is provided in the gasket housing area 22. When the double doors 70 are closed, each of the bending pieces 21a is placed into the gasket housing area 22 respectively so that they may be pushed with the conductive gasket 23.

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. 3-45772, 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, as shown in FIG. 2, when the door is a double door type, electromagnetic waves are likely to leak from the combined portion x, and it is difficult to achieve a desired electromagnetic shielding performance as a door opening as a whole. have.

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.
And a double door 70 made of an electromagnetic shielding material that is openably and closably mounted in the three-sided door frame, and a conductive gasket 23 mounted on the outer periphery of the double door. The gasket accommodating portion 22 is formed by providing a bent piece 21a on the door frame 21, and the conductive gasket 23 is provided in the gasket accommodating portion. 21a are inserted into the gasket accommodating portion 22 and are pressed by the conductive gasket 23. 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.
Fig. 3 is a horizontal enlarged cross-sectional view of a mating portion in Fig. 2, and Fig. 3 is a vertical cross-sectional view in Fig. 2.

As shown in FIG. 2, the double door 70 according to the present invention is mounted on a three-way frame 71 by a hinge 72 so as to be freely opened and closed. In FIG. 3, at the door opening of the wall 40,
Door three-way frame 7 integrally formed on both sides and on three sides on the upper surface
A double door 70, also made of an electromagnetic shielding material, is mounted in a three-way door frame 71 so as to be freely opened and closed. 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 door three-way frame 71 is the indoor side frame 7.
1a and the outdoor frame 71b, and the indoor frame 71a and the outdoor frame 71b are cut off pieces 71c and 71 protruding toward the door opening.
d, and is configured by integrating the blocking pieces 71c and 71d 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. .

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.

The double door 70 having the above-described structure is provided with a door three-way frame 71.
Electromagnetic waves leaking from the gap between the floor frame 10 and the floor frame 10 are shielded by the conductive gaskets 3, 12, and 14, and the electromagnetic waves leaking from the extremely small gap between the three-way door frame 71 and the gasket box 1 are It is shielded by the blocking piece 71 c and the cover 6 provided on the three-way door frame 71.

In the present invention, in order to further improve the electromagnetic shielding performance, as shown in FIG.
The conductive gasket 23 that comes into contact with the three-sided frame 71 and the floor frame 10 when is closed is mounted around the door 70, and the mating portion x in FIG. 2 has a special structure. That is, one end of the metal door frame 21 of the double doors 70, 70 in the combining portion x is bent inward to form bent pieces 21a, respectively.
A gasket storage portion 22 is formed on the back side of the bent piece 21a, and the conductive gasket 23 is mounted in the gasket storage portion 22. And double door 7
When 0 and 70 are closed, the respective bent pieces 21 a enter each other into the gasket storage section 22 and are pressed by the conductive gasket 23. Therefore, the electromagnetic wave that is about to leak from the combining portion x is not scattered between the bent gap including the gasket storage portion 22 and the conductive gasket 23.
Will be surely shielded.

[0014]

As is apparent from the above description, according to the present invention, in the joining portion of the double doors, a bent piece is provided on the door frame to form a gasket accommodating portion, and the gasket accommodating portion is formed in the gasket accommodating portion. When the conductive gasket is provided and the double door is closed, the respective bent pieces enter into the gasket storage portion and are pressed by the conductive gasket, so that the electromagnetic shielding performance of the entire door opening is provided. Can be improved.

[Brief description of the drawings]

FIG. 1 shows an embodiment of an electromagnetic shielding door of the present invention, and FIG.
5 is a horizontal enlarged cross-sectional view of the combining portion of FIG.

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

FIG. 3 is a vertical sectional view of FIG. 2;

[Explanation of symbols]

Reference numeral 21: door frame, 21a: bent piece, 22: gasket accommodating part 23: conductive gasket, 70: double door, 71: three-way door frame x: mating part

Claims (1)

[Claims] 1. A three-sided door frame made of an electromagnetic shielding material integrally formed on both sides and an upper surface of a door opening, and a double-sided door made of an electromagnetic shielding material mounted in the three-way door frame so as to be openable and closable. A conductive gasket attached to the outer periphery of the double-door, and at the joining portion of the double-door, a bent piece is provided on the door frame to form a gasket storage portion, and the conductive gasket is formed in the gasket storage portion. An electromagnetic shielding door comprising a conductive gasket, wherein when the double-sided door is closed, the bent pieces enter each other into the gasket storage portion and are pressed by the conductive gasket.