JPH0537177A - Electromagnetic shield room - Google Patents

Abstract

PURPOSE:To prevent a conductive sheet stretched on the floor from breakage. CONSTITUTION:The title room is provided with conductive shield walls 10, 60 and 65 to be formed so as to contain the conductive materials, a conductive sheet 74 that covers the upper section of the floor for installation and is also put into contact with the walls 10, 60 and 65, a floor panel 76 to be placed on the sheet 74, and an elastic material 79 to be placed between the panel 76 and the sheet 74.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetically shielded room for shielding electromagnetic fields, and more particularly to a structure of a corner portion between a wall and a floor.

[0002]

2. Description of the Related Art As a conventional electromagnetically shielded room, for example, there is one disclosed in Japanese Utility Model Publication No. 1-23396. In this electromagnetic shielded room, a wall panel made of a conductive material is installed on a floor made of concrete or the like, and the floor surface is covered with a conductive sheet such as copper foil.
The conductive sheet stands up at the corner between the floor and the wall and also covers the lower side surface of the wall panel made of a conductive material. Generally, the conductive sheet is not left exposed on the floor surface, and some panel or the like is further placed on the conductive sheet.

[0003]

Usually, since the panel itself placed on the conductive sheet has a slight warp and the floor also has a slight distortion, the floor and the panel covered with the conductive sheet are It is difficult to familiarize yourself with. Therefore, in the conventional technique, there is a problem that the panel may be violated and the conductive sheet may be broken, and electromagnetic waves may leak from the panel. The present invention has been made in view of such conventional problems, and an object thereof is to provide an electromagnetically shielded room capable of preventing the conductive sheet stretched on the floor from being broken.

[0004]

An electromagnetic shield room for achieving the above object is an electromagnetic shield wall formed of a conductive material and an upper part of an installation floor, and the conductive material of the electromagnetic shield wall. A conductive sheet in contact with the conductive sheet, a floor panel disposed on the conductive sheet, and an elastic material disposed between the floor panel and the conductive sheet. Is.

Here, the electromagnetic shield wall is formed of a conductive material, and has an electromagnetic shield wall panel having a main flat plate and a peripheral plate provided at the periphery of the main flat plate at a substantially right angle,
A first skirting board formed of a conductive material, having a groove shape in cross section, into which the peripheral edge portion of the electromagnetic shield wall panel can be inserted, and the groove shape in cross section; Formed by including a bottom plate of the groove of the first skirting board and a second skirting board arranged between the bottom edge plate of the electromagnetic shield panel, the second skirting board being insertable into the groove of the skirting board. It is preferable that the

[0006]

[Function] Since the elastic material is provided between the floor panel and the conductive sheet, even if the floor panel is violated, the elastic material acts as a cushioning material and prevents the conductive sheet from being broken. You can

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment according to the present invention will be described with reference to FIGS. In this embodiment, as shown in FIG.
It is an electromagnetically shielded room that prevents electromagnetic waves emitted from medical devices such as a magnetic resonance diagnostic apparatus (MRI) and electronic devices from leaking to the outside or entering electromagnetic waves from the outside. As shown in FIGS. 1 and 2, this electromagnetically shielded room has electromagnetically shielded panels 10 and 20.
And a first skirting board 60 and a second skirting board 65 for installing the electromagnetic shield wall panel 10 on the installation floor, and a first floor panel 72 and a second floor panel forming a floor of the electromagnetic shield room. 76, a conductive sheet 74 that is in contact with the indoor side plate 62 of the first skirting board 60 and is arranged between the first floor panel 72 and the second floor panel 76, a conductive sheet 74, and a second conductive sheet 74. And an elastic material 79 disposed between the floor panel 76 and the floor panel 76 of the above.

As shown in FIG. 4, the electromagnetic shield panels 10 and 20 include rectangular main flat plates 11 and 21 and a peripheral plate 1 which is provided on the periphery of the main flat plates 11 and 21 at a right angle to the main flat plates 11 and 21.
2, 22 and. Of the four peripheral plates 12 and 22 provided on the periphery of the rectangular main flat plates 11 and 21, one peripheral plate 1 provided on the short side of the main flat plates 11 and 21.
The other peripheral plates 12 and 22 except the peripheral plates 2 and 22 include the peripheral plate 1
Collar plates 13 and 23 are provided at right angles to 2, 22, that is, parallel to the main flat plates 11 and 21. Collar plates 13, 2
3 may be provided on all the peripheral plates 12 and 22 in order to increase the rigidity of the electromagnetic shield panels 10 and 20, but by not providing the flange plates 13 and 23 on one peripheral plate 12 and 22, The length of the electromagnetic shield panels 10 and 20 can be adjusted locally at this portion. It should be noted that the electromagnetic shield panels 10 and 20 are not ones in which the main flat plates 11 and 21, the peripheral plates 12 and 22 and the flange plates 13 and 23 are formed independently of each other, but are joined together to form one conductive sheet. It is manufactured by bending a stainless steel plate having the property of bending, and as a result, the main flat plates 11 and 21 and the peripheral plates 12 and 22 are manufactured.
And the collar plates 13 and 23.

Rivets 91, 91, ... For connecting the electromagnetic shield panels 10, 20 to the peripheral plates 12, 22 at intervals of 1/2 or less of the frequency of the electromagnetic waves to be shielded.
A plurality of rivet holes 18 and 28 that can be inserted therethrough are formed. Generally, if the length of the dipole antenna on the receiving side is set to 1/2 or less of the length of the dipole antenna on the transmitting side, the reception efficiency decreases. Therefore, the rivets 91, 91
The slight gap formed between them is regarded as a dipole antenna on the receiving side, and the distance between the rivets 99 and 91 is determined to shield the target electromagnetic wave. In addition, some of the plurality of electromagnetic shield panels 10 and 20 have wiring holes 19 formed in the peripheral plate 12 through which wiring and the like can be inserted.

As shown in FIG. 1, the first skirting board 60 has a groove-shaped cross section, and the electromagnetic shield wall panel 10 is provided in the groove.
The peripheral edge portion of the electromagnetic shield wall panel 10 can be inserted, that is, the groove width is substantially the same as the peripheral edge plate width of the electromagnetic shield wall panel 10. Further, the second skirting board 65 can be inserted into the groove of the first skirting board 60 and has a groove-shaped cross section. The first skirting board 60 and the second skirting board 65 are both formed of a conductive stainless material.

Next, the electromagnetic shield panel 1 described above.
0, 20, conductive sheet 74, elastic material 79, etc.,
The production of the electromagnetic shield room will be described. First, as shown in FIG. 1, an insulating sheet 71 is placed on the installation floor surface FL, a first skirting board 60 is placed at a desired position on the floor FL, and the bottom plate 61 is in contact with the insulating sheet 71. Secure with bolts 96. Next, the plate 6 for level adjustment
9 into the groove of the first skirting board 60 and then the second skirting board 6
5 is placed in the groove of the first skirting board 60 with its opening facing downwards. And a plurality of electromagnetic shield wall panels 1
, 0, 10, ... with their concave side, that is, the side having the collar plate 13 facing the indoor side, the electromagnetic shield wall panel 10
The peripheral portion of the first skirting board 60 is put in the groove of the first skirting board 60. At this time,
The lower peripheral plate 12 of the electromagnetic shield wall panel 10 and the bottom plate 66 of the second skirting board 65 are in contact with each other.

A plurality of electromagnetic shield wall panels 10, 10,
... is installed, and when the peripheral plates 12, 12 of the plurality of electromagnetic shield wall panels 10, 10 face each other, by awling,
The peripheral plates 12, 12 are clamped to each other so that the rivet holes 18, 18 are aligned with each other. On this occasion,
Since the rivet holes 18 are preliminarily drilled in the peripheral edge plate 12, unlike the on-site drilling, the deformation of the peripheral edge plate 12 at the time of drilling is small, and almost no cutting chips remain on the joint surface 12a. The peripheral plates 12, 12 can be brought into contact with each other in a state of high adhesion.

Next, with the peripheral plates 12, 12 in contact with each other, the rivets 91, 91, ... Are inserted into the rivet holes 18, 18 ,. To connect. Then, as shown in FIG. 4, the electromagnetic shield wall panel 10 in which the groove type channel material 30 formed of a conductive stainless material is connected so as to extend between the electromagnetic shield wall panels 10 and 10. , 10 and then remove the temporary fixing clamp. In this way, by mounting the groove type channel material 30 so as to extend between the electromagnetic shield wall panels 10, 10, the main flat plates 11, 11 of the plurality of electromagnetic shield panels 10, 10 are positioned on the same plane. The electromagnetic shield panels 10, 10 can be arranged linearly. Furthermore, by arranging the electromagnetic shield panels 10 and 10 in a straight line, the entire surfaces of the mutual connection surfaces 12a and 12a can be brought into contact with each other, and mutual adhesion can be enhanced.

Next, the electromagnetic shield ceiling panel 20 is provided with the groove side channel member 35 attached to the electromagnetic shield ceiling panel 20 with the recessed side facing the indoor side, and the groove attached to the electromagnetic shield ceiling panel 20. The side plate 37 of the mold channel member 35 and the bottom plate 33 of the channel member 30 mounted on the electromagnetic shield wall panel 10 are arranged so as to be in contact with each other. In this state, along the rivet hole 18 previously drilled in the peripheral edge plate 12 of the electromagnetic shield wall panel 10, from the indoor side,
The bottom plate 33 of the channel material 30 and the side plate 37 of the channel material 35 are each provided with a rivet hole 3 using a drill or the like.
1, 36 are bored, and rivets 91, 91, ... Are inserted therethrough, and the peripheral plate 12 of the electromagnetic shield wall panel 10, the groove-shaped channel member 30 attached to the peripheral plate 12, and the electromagnetic shield ceiling panel 20 are provided. Channel type channel material 35 installed
And are connected. In this way, the electromagnetic shield wall panel 10 and the electromagnetic shield ceiling panel 20 are connected.

As described above, when the plurality of electromagnetic shield panels 10 and 20 are connected to each other and all the walls and the ceiling of the electromagnetic shield room are attached, the first floor panel made of a plate material or the like. 72 is fixed to the installation floor surface on which the insulating sheet 71 is stretched with anchor bolts or the like. Then, as shown in FIG. 3, an insulating sheet 71 is stretched over the first floor panel 72, and a conductive sheet 74 is stretched over the insulating sheet 71. At this time, the conductive sheet 74 is stretched so that the outer peripheral side of the conductive sheet 74 also contacts the indoor side plate 62 of the first skirting board 60. The insulating sheet 7 is provided on the conductive sheet 74.
Stretch 5 Next, a copper foil tape 92 is attached so as to extend across the conductive sheet 74 that is in contact with the first skirting board 60 and the portion of the first skirting board 60 where the stainless material is exposed. Further, the copper foil tape 92 is also attached to the joint between the electromagnetic shield panels 10 and 20. An elastic material 79 made of resin is placed so as to come into contact with the first skirting board 60 to which the copper foil tape 92 is attached. Then, a second floor panel 76 is further placed on the insulating sheet 75, a primer 77 is applied on the second floor panel 76, and then a floor finish plate 78 is attached. An interior plate 93 is attached to the wall or ceiling.

As described above, the elastic material 79 is disposed between the side surface of the second floor panel 76 and the conductive sheet 74, and between the lower surface of the second floor panel 76 and the conductive sheet 74. Since the insulating sheet 75 having a slight elasticity is arranged, the elastic material 79 and the insulating sheet 75 act as a cushioning material to prevent the second floor panel 76 from being violated. Even if the second floor panel 76 is damaged due to an earthquake or the like, the conductive sheet 74 is prevented from being damaged. Therefore, the conductive sheet 74 is hardly broken and electromagnetic leakage can be prevented.

[0017]

According to the present invention, since the elastic material is arranged between the floor panel and the conductive sheet, the conductive sheet can be prevented from being damaged.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a corner portion between a wall and a floor of an electromagnetically shielded room according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part of an electromagnetically shielded room according to an embodiment of the present invention.

FIG. 3 is an explanatory view showing a state during floor construction of an electromagnetically shielded room according to an embodiment of the present invention.

FIG. 4 is an exploded perspective view of a main part of an electromagnetically shielded room according to an embodiment of the present invention.

FIG. 5 is an overall perspective view of an electromagnetically shielded room according to an embodiment of the present invention.

[Explanation of symbols]

10 ... Electromagnetic shield wall panel 11, 21, ... Main flat plate, 1
2, 22 ... peripheral plate, 13, 23 ... collar plate, 18, 31, 3
6 ... Rivet hole, 20 ... Electromagnetic shield ceiling panel, 3
0, 35 ... Channel-shaped channel material, 60 ... First skirting board, 61 ...
Bottom plate, 62 ... Indoor side plate, 65 ... Second skirting board, 72 ... First floor panel, 74 ... Conductive sheet, 76 ... Second floor panel, 79 ... Elastic material, 92 ... Copper foil tape, 93 … Interior plate.

Claims (2)

[Claims] 1. An electromagnetic shield wall formed of a conductive material, a conductive sheet that covers an upper part of an installation floor and is in contact with the conductive material of the electromagnetic shield wall, and a conductive sheet disposed on the conductive sheet. And a resilient material disposed on at least a part of the floor panel and the conductive sheet. 2. The electromagnetic shield wall is formed of a conductive material, and is formed of a conductive material, and an electromagnetic shield wall panel having a main flat plate and a peripheral plate provided at a periphery of the main flat plate at substantially right angles. A first skirting board having a groove-shaped cross section and capable of inserting the peripheral edge of the electromagnetic shield wall panel into the groove; and a groove having a groove-shaped cross section in the groove of the first skirting board. A bottom plate of the groove of the first skirting board and a second skirting board disposed between the lower peripheral edge plate of the electromagnetic shield panel, and the conductive board. The electromagnetically shielded room according to claim 1, wherein the seat is in contact with the indoor side plate of the first skirting board.