JPH1077767A - Electromagnetic shield door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To exhibit an electromagnetic shield effect equal to that of a solid plate door by continuously fitting a plurality of electrically conductive panels with each other so as to constitute an electromagnetic shield door, and providing electromagnetic shield members on the fitted parts. SOLUTION: A plurality of electrically conductive panels, a top panel 2, intermediate panels 3, 4, and a seat plate panel 5, are continuously fitted with each other, so as to constitute an electromagnetic shield door 1. Next, first electromagnetic shield members 12, 12 are fitted without gaps to the lengthwise direction of one side fitted part of the fitted two panels and uniformly contacted with the fitted part of the other panel. In addition, a room having electromagnetic shield function and the whole circumference of the electromagnetic shield door 1 are electromagnetically contacted with each other through second electromagnetic shield members 9, 14. Hereby, the door 1 constituted of a plurality of the electrically conductive panels 2-5 has the electromagnetic shield effect equal to that of a solid plate door.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetically shielded door used in an electromagnetically shielded room or an anechoic chamber, and more particularly, to a large-sized electromagnetically shielded door used when carrying in or out large-sized equipment. About.

[0002]

2. Description of the Related Art Conventionally, an electromagnetic shielding function has been provided for preventing a failure due to an electromagnetic wave generated from an electronic device or the like (for example, destruction or malfunction of an electronic circuit such as a computer, or noise during communication). There are electromagnetically shielded rooms and anechoic rooms. In these electromagnetic shield rooms and anechoic chambers, the surroundings of the room are surrounded by a conductive member such as a metal plate,
The opening for loading / unloading the equipment was closed with a door for electromagnetic wave shielding.

[0003] Electromagnetic shield doors are generally made of a single metal plate to prevent electromagnetic waves from entering.

There is also a shutter-like electromagnetic shield door in which panels are joined together. In this case, the panels are partially connected to each other with a conducting wire or the like to provide an electromagnetic shielding function.

[0005]

However, in the case of a single-plate electromagnetic shield door made of metal, a large door for carrying in and out a large device in a factory or a laboratory has a large weight. A great deal of labor and cost has been required for transporting, loading and unloading, and installation work.

Further, in the shutter-shaped electromagnetic shield door, the connection between the panels by the conductor is only partially performed by the electromagnetic contact between the panels. Therefore, electromagnetic waves are transmitted from the gaps where the connection by the conductor is not made. There was a problem of leakage.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a relatively large electromagnetic shield door which is easy to carry, carry in, take out, and install, and has a high electromagnetic wave shielding effect. Is what you do.

[0008]

According to the first aspect of the present invention,
An electromagnetic shield door for opening and closing a room having an electromagnetic shield function, wherein the plurality of conductive panels constituting the door by being continuously fitted, and at least one of the two fitted conductive panels. A first electromagnetic shield member is attached in the longitudinal direction of the fitting portion without any gap, and can uniformly contact the fitting portion of the other panel.

According to the first aspect of the present invention, the first electromagnetic shield member attached without any gap in the longitudinal direction of the panel fitting portion allows the panels to be in electromagnetic contact with each other at the fitting portion. The door constituted by the conductive panel has the same electromagnetic shielding effect as a single-panel door. Therefore, it is possible to divide and convey the individual panels, to carry in and out, and to install the individual panels on site, which makes the work extremely easy as compared with the conventional single-panel door.

According to the first aspect of the present invention, since the electromagnetic shield door is divided into a plurality of panels, the door can be opened and closed by manually moving each panel. It is not necessary to use a magnetic or electromagnetic shield door, and costs can be reduced.

Here, the first electromagnetic shielding material is a conductive material for bringing the fitting portion of the panel into electromagnetic contact. A metal may be used as the first electromagnetic shielding material. When the shape of the fitting portion is uneven, it is preferable to use a material in which rubber is knitted with a metal fine net so as to be easily deformed according to the shape and easily contact. As the metal fine net, monel (an alloy of nickel and copper), aluminum, an alloy of Su, Cu, and Fe may be used. Also,
In the case of a large door, a stainless steel wire braided into a rope shape may be used as the electromagnetic shielding material.

The height of the panel may be arbitrarily determined. However,
If the height of each panel is low, the weight of each panel is reduced, making it easier to transport, carry in and out, and install the panels. Since the number of fitting portions increases, the electromagnetic shielding effect may be slightly inferior. Therefore, the height of each panel may be determined in consideration of the workability and the degree of the required electromagnetic shielding effect.

The material of the panel may be any material having conductivity. However, metal is desirable because it requires some rigidity.

The first electromagnetic shielding material may be attached to only one of the fitted portions of the two fitted panels, or may be attached to both of the fitted portions.

According to a second aspect of the present invention, there is provided the electromagnetic shield door according to the first aspect, further comprising a second electromagnetic shield member for making an electromagnetic contact between the room and the entire periphery of the electromagnetic shield door.

According to the second aspect of the present invention, the second electromagnetic shield member can make electromagnetic contact between the entire surroundings of the electromagnetic shield door in the upper, lower, left and right directions and the room. Thus, the electromagnetic shielding effect of the room is further enhanced.

Here, the second electromagnetic shield member is an electromagnetic shield member for bringing the entire periphery of the electromagnetic shield door into electromagnetic contact with the room. As the second electromagnetic shield member, a metal spring (for example, beryllium copper alloy, stainless steel, etc.) may be used in addition to the one described in the first electromagnetic shield member.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] First, an embodiment in which the present invention is applied to a so-called flash type electromagnetic shield door will be described.

Here, the electromagnetic shield door of the flash type is an electromagnetic shield door having a structure in which, when storing panels, the panels are sent one by one vertically while being stored.

FIG. 1 is a longitudinal sectional side view of a panel of a flash type electromagnetic shield door according to the present invention.

The electromagnetic shield door 1 is composed of four panels: a top panel 2, intermediate panels 3 and 4, and a seat panel 5. Each panel contains a reinforcing material (for example, H-shaped steel) 6, 6,.... Each panel is provided with pulleys 7, 7,... And shafts 31, 31,... (See FIG. 3), and by moving on the rails 30, 30 (see FIG. 3), the vertical movement of each panel is achieved. Is being done. At the upper end of the top panel 2, a panel guard 8 and a second electromagnetic shielding material 9 (described later) are provided with rivets 10, 1
0,... Further, a decorative cover 15 is attached to the seat panel 5 by rivets 10, 10,..., And a second electromagnetic shield member 14 (described later) is attached in a concave portion at the lower end.

The cross section of the upper and lower ends of each panel other than the lower end of the seat panel 5 has a concave shape having protruding plates 11, 11,... The left and right protrusions a and b of the recess are
Length and width are different. The projections a, b are alternately combined with each other, and the projections 11, 11,... This fitting portion includes left and right 2
Two L-shaped spaces are formed.

A first electromagnetic shielding material 12, 12,... Is provided on one of the combined projections a and b (or both) by an adhesive or the like without any gap in the longitudinal direction of the panel. Installed. Also, the projection plate 11,
The first electromagnetic shielding members 13, 13,... Are also attached in the longitudinal direction to the surface of the groove 11 of the panel end and the concave surface of the panel end. When the panels are fitted to each other, the first electromagnetic shielding members 12, 12,... Are formed as protrusions a to which the first electromagnetic shielding members 12, 12,.
(Or the protrusions b) are uniformly contacted in the longitudinal direction of the panel, and the first electromagnetic shielding members 13, 13,... Are uniformly in contact with the protrusion plates 11, 11,. It is to be contacted. As a result, the panels are reliably shielded from each other, and the fitted panels have the same electromagnetic shielding effect as a single plate against electromagnetic waves.

Here, the first electromagnetic shielding members 12, 1
As for 2,..., Rubber knitted with a fine metal net or the like is used so as to easily come into contact with the fitting portion. Monel (an alloy of nickel and copper) is used as the metal micro net.

Also, the first electromagnetic shielding members 13, 13,
As for ..., an unpainted metal plate is used.

FIG. 2 is a front view of the electromagnetic shield door 1 shown in FIG.

Each panel 2, 3, 4, of the electromagnetic shield door 1
5 is incorporated in an angle formed by a lower member 21, an upper member 22, and vertical members 23 attached to a lower frame 20 of the electromagnetic shield room 100.

Handles 24, 24,... Are attached to each panel, and the electromagnetic shield door 1 can be opened and closed by manually operating each panel.

FIG. 3 is a plan view of the electromagnetic shield door 1 shown in FIG.

Each panel 2, 3, 4, of the electromagnetic shield door 1
The pulleys 7 on the left and right of 5 are fitted on the rails 30, 30. When the pulleys 7, 7,... Move on the rails 30, 30, the movement is transmitted to the shafts 31, 31,. 2,3,4,5 move up and down.

Outside the rails 30, 30, rail protection covers 32, 32 are provided. The protective covers 32, 32 are connected to the rail 3 by rivets 33, 33.
0,30.

The rail protection covers 32, 32 are welded to one side surface of the U-shaped metal plates 34, 34. The opposite sides of the U-shaped metal plates 34, 34 are fastened to the longitudinal members 23, 23 by bolts 35, 35 and nuts 36, 36.

Here, at least the rail protection cover 3
2, 32 and U-shaped metal plates 34, 34 and vertical members 23, 2
Each joint of No. 3 is not coated so that electromagnetic contact is possible.

The rail protection covers 32, 32
By using rivets 37, 37, the second electromagnetic shielding material 3
8, 38,... Are attached continuously in the vertical direction (vertical direction). The second electromagnetic shielding members 38, 38 are panel protection covers 39, 39,... Joined to the left and right ends of the wide surfaces (external side surfaces, internal side surfaces) of the panels 2, 3, 4, 5.
, The panels 2, 3, 4, and 5 can slide.

Accordingly, the electromagnetic shield door 1 and the vertical members 23, 2
Between three, an electromagnetic wave shield structure is provided in which the second electromagnetic shield members 37, 37 are in electromagnetic contact with each other.

Here, the second electromagnetic shielding members 38, 38
, A stainless steel spring is used.

FIG. 4 is a longitudinal sectional side view of the electromagnetic shield door when the electromagnetic shield door 1 of FIG. 1 is attached to the electromagnetic shield room 100 and the door is closed.

A metal plate 40 is fastened to the upper member 21 attached to the electromagnetic shield room 100 by bolts 41, 41,... And nuts 42, 42,.

The outer wide surface of the top panel 2 has a second
Are successively joined in the horizontal direction (lateral direction) by rivets 10 so as to be in contact with the metal plate 40. Therefore, the electromagnetic shield door 1
An electromagnetic wave shielding structure is provided between the upper member 21 and the upper member 21 in electromagnetic contact with the second electromagnetic shielding member 9.

Here, a stainless steel spring is used as the second electromagnetic shield member 9.

The lower member 22 includes the lower frame 20 and the bolts 41 and 4.
Are fastened by nuts 42, 42,. Also, the lower end of the seat panel 5 in contact with the lower frame 20 is
It has a concave shape, and the second electromagnetic shield member 14 is embedded in the concave valley portion without any gap in the longitudinal direction of the seat panel 5. When the door is closed, the second
Of the lower frame 20 and the seat panel 5 in the longitudinal direction, and the electromagnetic shielding material 14 is electromagnetically shielded. Therefore, the electromagnetic shield door 1 and the lower member 22 are also attached to the lower frame 20.
An electromagnetic wave shielding structure that is electromagnetically contacted through the structure.

Here, as the second electromagnetic shielding material 14, a material obtained by knitting rubber with Monel (an alloy of nickel and copper) is used.

As described above, the electromagnetic shield door 1 is
The electromagnetic contact between each panel is the first electromagnetic shielding material 1
, 13 and 13 are electromagnetically shielded. Further, the electromagnetic shield door 1 is provided around the entirety of the electromagnetic shield room 100 (the upper member 21, the lower member 22, the vertical members 23, 2).
3) and the second electromagnetic shielding members 9, 14, 38, 38,.
Thus, the structure is electromagnetically shielded.

Next, a method of investigating the shielding effect of the electromagnetic shield door according to the first embodiment of the present invention and the results obtained by the method will be described below.

First, the investigation method will be described.

10 KHz to 1000 M generated by an electromagnetic wave generator or the like installed in an electromagnetic shield room
An electromagnetic wave having a frequency of Hz is transmitted from a transmitting antenna. The transmitted electromagnetic wave is received by a receiving antenna outside the electromagnetically shielded room. The electric field strength of the received electromagnetic wave is measured by a receiver. An attenuation rate is obtained from the measured electric field strength, and this attenuation rate is used as an index of the shielding effect.

FIG. 5 shows the results of the attenuation rate for each frequency in the electromagnetic shield door according to the first embodiment obtained by the above method.

The horizontal axis of the graph shown in FIG. 5 is the frequency from 10 KHz to 1000 MHz, and the vertical axis is the attenuation rate (dB).

Between 10 KHz and 100 MHz, 80
An extremely high shielding effect of at least dB (attenuation rate of 1/10000) was obtained. 100MHz to 1000M
Even at Hz, a high shielding effect of about 60 dB (attenuation rate of 1/1000) or more was obtained. Therefore, VLF (~
Sufficient electromagnetic shielding performance could be ensured for electromagnetic waves at a level of 30 KHz to VHF (30 to 300 MHz).

According to the electromagnetic shield door 1 of the first embodiment of the present invention described above, each of the panels 2, 3,
The first electromagnetic shielding members 12, 12,...
, 13, 13,... Are attached without any gaps in the longitudinal direction so as to make reliable contact with the panel, so that the fitted panels have the same electromagnetic shielding effect as a single plate against electromagnetic waves. It will be. Therefore, for example, when manufacturing a large electromagnetic shield door for carrying in and out a large device, it can be divided into several panels and transported, or the assembly can be done on site, and a conventional metal sheet Work such as transport, loading and unloading, and installation of the door is easier than with a plate.

Further, not only between the panels but also between the panels and the electromagnetic shield mounting frame (upper member 21, lower member 22, vertical members 23, 23) attached to the electromagnetic shield room 100.
Are electromagnetically shielded by the electromagnetic shielding members 9 and 14, and 38, 38,..., So that the electromagnetic shielding effect is further enhanced.

The height of each panel may be arbitrarily determined. However, when the height of each panel is low, the weight of each panel is reduced, and transport, loading and unloading of the panel, and installation of the panel are facilitated. However, on the other hand, since the number of panels increases and the fitting portion between the panels increases accordingly,
The electromagnetic shielding effect may be slightly inferior. Therefore, the height of each panel may be determined in consideration of the workability and the degree of the required electromagnetic shielding effect.

In the above embodiment, rubber woven with Monel was used as the electromagnetic shielding material between the bottom panel 5 and the lower frame 20. However, a metal spring was used to make electromagnetic contact with the weight of the panel. It may be something.

In the above embodiment, L
Although a character-shaped gap is formed, it may be fitted with almost no gap. Then, it is effective for magnetic field waves.

Although the panels can be stored manually one by one, it is needless to say that the panels may be mechanical or electric.

[Second Embodiment] Next, an embodiment in which the present invention is applied to a so-called slider type electromagnetic shield door will be described. Parts that are the same as those described in the first embodiment will be omitted.

Here, the slider-type electromagnetic shield door is an electromagnetic shield door having a structure in which, when the panel is stored, the panel is bent and fed while being connected.

FIG. 6 is a front view when the electromagnetic shield door 51 according to the second embodiment is attached to the electromagnetic shield room 200.

Each panel 52, 5 of the electromagnetic shield door 51
3, 54, and 55 are lower frames 7 of the electromagnetic shield room 200.
The lower member 71, the upper member 72, and the vertical members 73, 73 attached to the angle 0 are incorporated in an angle. Also, handles 74, 74,... Are attached to each panel.

FIG. 7 shows a side view when the electromagnetic shield door is attached to an electromagnetic shield room or the like and the door is closed.

The electromagnetic shield door 51 is connected to the top panel 5
2. It is composed of a plurality of panels including an intermediate panel 53, 54 and a seat panel 55. Each panel has a pulley 56,5
, And shafts 57, 57,.
0 (FIG. 8), each panel is moved.

The outer surface of each panel has a rib structure. The panel ends have an L-shape, and the panels are fitted by a combination of an L-shape and an inverted L-shape.

The hinges 58, 58,...
When the panel is stored, this hinge 58,
58 are bent and housed.

The first electromagnetic shielding members 59, 59,... Are provided at the fitting portion of either one (or both) of the panels.
The panel is attached without any gap in the longitudinal direction of the panel by an adhesive or the like. And when the panels are fitted together,
The first electromagnetic shielding members 59, 59,... Uniformly contact the fitting portions to which the first electromagnetic shielding members 59, 59,. As a result, the panels are reliably shielded from each other, and the fitted panels have the same electromagnetic shielding effect as a single plate against electromagnetic waves.

Here, the first electromagnetic shielding members 59, 5
As for 9,..., Rubber knitted with Monel is used.

The second electromagnetic shielding member 60 is embedded in the lower end portion of the seat panel 55 in contact with the lower frame 70 attached to the electromagnetic shield room 200 without any gap in the longitudinal direction of the seat panel 55, and is connected to the lower frame 70. Contact. This ensures that the seat panel 55 and the lower frame 70 are electromagnetically shielded. The lower member 72 is fastened by the lower frame 70, the bolts 61, 61,... And the nuts 62, 62,..., So that the electromagnetic shield door 51 and the lower member 22 also have an electromagnetic wave shielding structure.

Here, as the second electromagnetic shielding material 60, a material obtained by knitting rubber with Monel is used.

At the corner of the upper member 21 attached to the electromagnetic shield room 200, a metal plate 63 is provided with rivets 64, 64,
…. A second electromagnetic shield 65 is attached to the valley of the concave space formed by the upper member 71 and the metal plate 63 without any gap in the longitudinal direction of the panel 52. The outer surface of the top panel 52 is in contact with a wide surface. Accordingly, an electromagnetic wave shield structure in which the electromagnetic shield door 51 and the upper member 71 are electromagnetically contacted by the second electromagnetic shield member 65 is provided.

Here, as the second electromagnetic shield material 65, a material obtained by knitting rubber with Monel is used.

FIG. 8 is a plan view of the electromagnetic shield door when the slider type electromagnetic shield door according to the present invention is attached to an electromagnetic shield room or the like.

The left and right pulleys 56, 56,... Of the panels 52, 53, 54, 55 are fitted on the rails 80, 80, and the movement of the pulleys 56, 56,. , ..., and panel 52, 53,
54, 55 move up and down.

The rails 80, 80 are bolts 81, 8
, And nuts 82, 82, ..., metal plates 83, 8
3 The metal plates 83, 83 are welded and joined to L-shaped metal plates 87, 87 fastened to the vertical members 73, 73 by bolts 84, 84,... And nuts 85, 85,.

The bearings 88, 8 of the shafts 57, 57,.
Are provided with second shield members 90, 90 inside panel protection covers 89, 89,.
The panels 52, 53, 54, 55 come into contact with and slide on the side surfaces. Therefore, the panels 52, 53, 5
An electromagnetic wave shielding structure is provided between the vertical members 72, 72 and the vertical members 72, 72 in electromagnetic contact with the second electromagnetic shielding members 90, 90.

Here, the second electromagnetic shielding members 90, 90
, A metal plate is used.

Metal plates 91, 91 are fastened to the corners of the vertical members 73, 73 attached to the electromagnetic shield room 200 by rivets 92, 92,. In the valleys of the concave space formed by the vertical members 73, 73 and the metal plates 91, 91, second electromagnetic shielding members 93, 93 are provided.
The panels 52, 53, 54, and 55 are attached without any gaps in the vertical direction, and the second electromagnetic shield members 93, 93 come into contact with the wide surfaces on the outside of the panels 52, 53, 54, and 55. I have. Therefore, between the electromagnetic shield door 51 and the vertical members 73, 73, the second electromagnetic shield members 93, 93 are provided.
Thus, an electromagnetic wave shield structure electromagnetically contacted is obtained.

Here, the second electromagnetic shielding members 93, 93
A rubber knitted with Monel is used.

As described above, the electromagnetic shield door 51
, The electromagnetic contact between the panels is electromagnetically shielded by the first electromagnetic shielding members 59, 59,... Further, the electromagnetic shield door 51 is electromagnetically controlled by the entire periphery (the upper member 71, the lower member 72, the vertical members 73, 73) of the electromagnetic shield room 200 and the second electromagnetic shield members 60, 63, 90, 90, 93, 93. It becomes a shielded structure.

Next, the results obtained by investigating the shielding effect of the electromagnetic shield door according to the second embodiment of the present invention by the same method as in the example of the first embodiment will be described below.

FIG. 9 shows the results of the attenuation factor at each frequency of the electromagnetic shield door according to the second embodiment.

The horizontal axis of the graph shown in FIG. 9 is the frequency from 10 KHz to 1000 MHz, and the vertical axis is the attenuation rate (dB).

In the range between 10 KHz and 9 MHz, almost 80
An extremely high shielding effect of at least dB (attenuation rate of 1/10000) was obtained. Even between 9 MHz and 500 MHz, a high shielding effect of about 60 dB (attenuation rate of 1/1000) or more was obtained. 500 MHz to 1000
A shielding effect of 40 dB (attenuation rate of 1/100) was obtained even between MHz. Therefore, VLF (（30 KH)
From z) to VHF (30 to 300 MHz) level, sufficient electromagnetic shielding performance could be secured.

According to the electromagnetic shield door 51 according to the second embodiment of the present invention described above, each panel 52,5
The first electromagnetic shielding material 59,
59 are attached without any gap in the longitudinal direction so as to make reliable contact with the panel, so that the fitted plural panels have the same electromagnetic shielding effect as a single plate against electromagnetic waves. . Therefore, for example, when manufacturing a large electromagnetic shield door for carrying in and out a large device, it can be divided into several panels and transported without using a conventional single metal plate, or assembly can be done on site. And the operations of transporting, carrying in and out, and installing the door are facilitated.

Further, not only between the panels but also between the panels and the electromagnetic shield mounting frame (upper member 71, lower member 72, vertical members 73, 73) attached to the electromagnetic shield room 200.
Electromagnetic shielding materials 60, 63 and 90, 90 and 93, 93
Therefore, the electromagnetic shielding effect is further enhanced.

The height of each panel may be arbitrarily determined. However, when the height of each panel is low, the weight of each panel is reduced, and transport, loading and unloading of the panel, and installation of the panel are facilitated. However, on the other hand, since the number of panels increases and the fitting portion between the panels increases accordingly,
The electromagnetic shielding effect may be slightly inferior. Therefore, the height of each panel may be determined in consideration of the workability and the degree of the required electromagnetic shielding effect.

In the above embodiment, rubber woven with Monel was used as the electromagnetic shielding material between the bottom panel 55 and the lower frame 70. However, the electromagnetic shielding material was formed by using a metal spring to make electromagnetic contact with the weight of the panel. It may be something.

In the above embodiment, L
Although a character-shaped gap is formed, it may be fitted with almost no gap. Then, it is effective for magnetic field waves.

[0087]

According to the first aspect of the present invention, the first electromagnetic shield material attached without any gap in the longitudinal direction of the panel fitting portion can achieve electromagnetic contact between the panels at the fitting portion. A door composed of a plurality of conductive panels has the same electromagnetic shielding effect as a single-panel door. Therefore, it is possible to divide and convey the individual panels, to carry in and out, and to install the individual panels on site, which makes the operation extremely easy as compared with the conventional single-panel door.

According to the first aspect of the present invention, since the electromagnetic shield door is divided into a plurality of panels, the door can be opened and closed by manually moving each panel. It is not necessary to use a magnetic or electromagnetic shield door, and costs can be reduced.

According to the second aspect of the present invention, since the second electromagnetic shielding material can make electromagnetic contact between the entire upper, lower, left and right periphery of the electromagnetic shielding door and the room, the electromagnetic shielding effect is further enhanced.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of a panel of an electromagnetic shield door according to a first embodiment.

FIG. 2 is a front view when the electromagnetic shield door according to the first embodiment is attached to an electromagnetic shield room.

FIG. 3 is a plan view when the electromagnetic shield door according to the first embodiment is attached to an electromagnetic shield room.

FIG. 4 is a longitudinal sectional side view when the electromagnetic shield door according to the first embodiment is attached to an electromagnetic shield room.

FIG. 5 is a graph showing a result of an attenuation rate for each frequency in the electromagnetic shield door according to the first embodiment.

FIG. 6 is a front view when the electromagnetic shield door according to the second embodiment is attached to an electromagnetic shield room.

FIG. 7 is a side view when an electromagnetic shield door according to a second embodiment is attached to an electromagnetic shield room.

FIG. 8 is a plan view when an electromagnetic shield door according to a second embodiment is attached to an electromagnetic shield room.

FIG. 9 is a graph showing a result of an attenuation rate for each frequency in the electromagnetic shield door according to the second embodiment.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 electromagnetic shield door 2 top panel (panel) 3 intermediate panel (panel) 4 intermediate panel (panel) 5 bottom panel (panel) 9 second electromagnetic shield material (second electromagnetic shield member) 12 first electromagnetic shield material (1st electromagnetic shield member) 13 1st electromagnetic shield material (1st electromagnetic shield member) 14 2nd electromagnetic shield material (2nd electromagnetic shield member) 38 2nd electromagnetic shield material (2nd electromagnetic shield material) Shield member) 51 electromagnetic shield door 52 top panel (panel) 53 intermediate panel (panel) 54 intermediate panel (panel) 55 bottom plate (panel) 59 first electromagnetic shield material (first electromagnetic shield member) 60 second Electromagnetic shield material (second electromagnetic shield member) 65 Second electromagnetic shield material (second electromagnetic shield member) 90 Second electromagnetic shield Material (second electromagnetic shield member) 93 Second electromagnetic shield material (second electromagnetic shield member) 100 Electromagnetic shield room (room) 200 Electromagnetic shield room (room)

Claims (2)

[Claims] 1. An electromagnetic shield door for opening and closing a room having an electromagnetic shield function, comprising: a plurality of conductive panels that form a door by being continuously fitted; A first electromagnetic shield member attached without a gap in the longitudinal direction of at least one fitting portion of the panel and capable of uniformly contacting the fitting portion of the other panel. Shield door. 2. The electromagnetic shield door according to claim 1, further comprising a second electromagnetic shield member that electromagnetically contacts the room and the entire periphery of the electromagnetic shield door.