JPH0537176A - Electromagnetic shield panel - Google Patents

Abstract

PURPOSE:To easily joint panels each other so as to reduce the work steps. CONSTITUTION:The title panel is constituted of a main flat plate 11 and a peripheral plate 12 that is provided at about right angle against the plate 11 on its periphery. The plates 11 and 12 are made of conductive material, and the conductive material is exposed at least on the outer circumferential side of the plate 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic shield panel used for walls, ceilings, etc. which constitute an electromagnetic shield room.

[0002]

2. Description of the Related Art As a conventional electromagnetic shield panel, for example, there is one disclosed in Japanese Utility Model Publication No. 1-23396. In this electromagnetic shield panel, a conductive material is attached to both surfaces of a plate-shaped core material, that is, to the outer and inner surfaces of the electromagnetic shield room. When the electromagnetic shield panels are connected side by side, conductive connecting plates are attached to both sides of the panel so as to extend between the panels and are fixed with screws or the like.

[0003]

However, in such a conventional electromagnetic shield panel, when connecting the panels to each other, a connecting plate is required, and it is necessary to construct from both sides of the panel, which is very troublesome. There is a problem that it costs. Generally, the electromagnetic shield room is created in the building when it is completed to some extent, but it is necessary to construct it from the surface of the panel, that is, the outside of the electromagnetic shield room. Must be taken into consideration. Moreover, the construction from the outside of the electromagnetic shield room must be performed between the building interior wall and the electromagnetic shield panel, and the construction itself is troublesome.

The present invention has been made by paying attention to such conventional problems, and it is possible to easily connect the panels to each other and reduce the number of working steps, and an electromagnetic shield panel. The purpose is to provide an electromagnetically shielded room provided.

[0005]

SUMMARY OF THE INVENTION An electromagnetic shield panel for achieving the above object has a main flat plate and a peripheral plate provided at a peripheral edge of the main flat plate at substantially right angles to the main flat plate. The flat plate and the peripheral plate are formed of a conductive material, and the conductive material is exposed at least on the outer peripheral surface of the peripheral plate. Here, in the electromagnetic shield panel, it is preferable that a plurality of holes through which the connector can be inserted are formed in the peripheral plate at intervals of 1/2 or less of the wavelength of the electromagnetic wave to be shielded.

By the way, an electromagnetically shielded room using the above electromagnetically shielded panel can be manufactured by providing a plurality of the electromagnetically shielded panels such that the peripheral plates are in contact with each other. A conductive tape is preferably attached to the joint between the plurality of electromagnetic shield panels.

[0007]

[Function] A plurality of electromagnetic shield panels are arranged so that their recessed sides are directed toward the indoor side, and their peripheral plates are in contact with each other.
Place it in the desired position. Next, insert a drill or the like into the recessed portion (the portion surrounded by the main flat plate and the peripheral plate) of the electromagnetic shield panel from the indoor side, and the connector can be inserted into the peripheral plates that are in contact with each other. Make a hole. At this time, if the peripheral plate has a hole through which the connector can be inserted in advance, unlike the on-site drilling, the deformation of the peripheral plate at the time of drilling is small and chips are not formed on the joint surface. Because almost nothing remains,
The peripheral plates can be brought into contact with each other in a highly adherent state.

Next, in a state where the peripheral plates are in contact with each other, the coupling tool is inserted from the indoor side into the hole of the peripheral plates to join the electromagnetic shield panels to each other. In this way, the electromagnetic shield panels can be joined to each other only by the construction from the inside. Also, wiring or the like can be put in a recessed portion of the electromagnetic shield panel. That is, the wiring can be accommodated within the thickness of the electromagnetic shield panel. When multiple electromagnetic shield panels are joined together as described above, conductive tape is attached from the indoor side to the joint between the electromagnetic shield panels to reduce leakage of electromagnetic waves from the joint between the electromagnetic shield panels. .

[0009]

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.
The present invention relates to an electromagnetically shielded room for preventing electromagnetic waves emitted from medical equipment such as a magnetic resonance diagnostic apparatus (MRI) or electronic equipment from leaking to the outside, or preventing electromagnetic waves from entering from the outside. The electromagnetic shield panel 10 is concerned.

As shown in FIGS. 1 to 3, an electromagnetic shield panel 10 according to this embodiment includes a rectangular main flat plate 11 and a peripheral plate 1 around the main flat plate 11 at a right angle to the main flat plate 11.
2 and. When the electromagnetic shield panel 10 is installed, the peripheral plates 12, 12, 12 provided on the lower and side portions are provided with a collar plate 13, at a right angle to the peripheral plates 12, 12, 12, that is, parallel to the main flat plate 11. 13, 13 are provided. In addition, this electromagnetic shield panel 10 is a main flat plate 1
1. The peripheral plate 12 and the flange plate 13 are not formed by joining them independently, but are formed by bending a single stainless steel plate having conductivity. As a result, the main flat plate 11 The peripheral plate 12 and the collar plate 13 are provided. Further, the electromagnetic shield panel 10 is not coated with any coating material such as paint,
The stainless steel material is exposed on the entire surface.

On the peripheral plate 12, the electromagnetic shield panel 1 is arranged at intervals of 1/2 or less of the frequency of the electromagnetic wave to be shielded.
The rivet holes 18, 18, ... Through which the rivets 91, 91 ,. 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 slight gap created between the rivets 91, 91 is regarded as a dipole antenna on the receiving side, and the distance between the rivets 19, 91 is determined to shield the target electromagnetic waves.

Next, the electromagnetic shield panel 1 described above
The production of an electromagnetically shielded room using a plurality of 0s will be described. First, a plurality of electromagnetic shield panels 10, 10
Is arranged at a desired place with its concave side, that is, the side having the collar plate 13 facing the indoor side. At this time, the peripheral plates 12, 12 of the plurality of electromagnetic shield panels 10, 10 are made to face each other, and the rivet holes 18, 18 are aligned with each other, so that the peripheral plates 12, 12 are temporarily clamped together. At this time, since the rivet hole 18 is preliminarily drilled in the peripheral plate 12, unlike the on-site drilling, the deformation of the peripheral plate 12 at the time of drilling is small, and most of the chips remain on the bonding surface 12a. Therefore, the peripheral plates 12, 12 can be brought into contact with each other in a highly adherent state.

Next, with the peripheral plates 12, 12 in contact with each other, the rivets 91, 91, ... Are inserted into the rivet holes 18, 18 ,. Link. Then, as shown in FIG. 1, a groove-shaped channel material 30 having a groove-shaped cross section is fitted onto the joined electromagnetic shield panels 10 and 10 so as to extend between the electromagnetic shield panels 10 and 10. ,
Remove the temporary clamp. Here, the channel material 3
As shown in FIG. 4, it is necessary to fit 0 into the upper portions of the electromagnetic shield panels 10, 10.
0, 10 main flat plates 11, 11 are located on the same plane,
In order to arrange the electromagnetic shield panels 10 and 10 linearly, and to arrange the electromagnetic shield panels 10 and 10 linearly, the entire surfaces of the mutual joint surfaces 12a and 12a are brought into contact with each other to ensure mutual adhesion. This is to increase. Further, it is also for evenly aligning the joint surface with a ceiling panel (not shown).

In this manner, when the plurality of electromagnetic shield panels 10, 10, ... Are joined and all the walls and ceiling of the electromagnetic shield room are attached, the conductive copper foil tape 92 is electromagnetically shielded. Attach from the inside of the room to the joint between the panels 10 and 10. Finally, an interior plate is attached to the surface of the electromagnetic shield panel 10 on the indoor side to complete the process.

As described above, in this embodiment, the electromagnetic shield panels 10 and 10 can be joined to each other only from the indoor side, so that the construction can be simplified and the number of working steps can be reduced. Further, since the peripheral plates 12, 12 of the electromagnetic shield panels 10, 10 have very high adhesion to each other and the copper foil tape 92 is attached to the joint between the electromagnetic shield panels 10, 10, the electromagnetic shield panels 10, It is possible to reduce the leakage of electromagnetic waves from the joints of the ten members, and to enhance the electromagnetic shielding effect.

When it is necessary to pass a wire or the like through the electromagnetic shield panel 10, a wiring hole through which the wire or the like passes is provided in advance, and when the electromagnetic shield panel 10 is installed,
Pass the wiring through the wiring hole. Wiring is a main plate 11 and a peripheral plate 12
And it is accommodated in the space covered with the collar plate 13. Therefore, the wiring can be accommodated within the thickness of the electromagnetic shield panel 10, the wiring can be easily handled, and the interior board and the like can be easily attached.

By the way, the rigidity of the electromagnetic shield panel 10 decreases as the size of the main flat plate 11 increases. Therefore,
As shown in FIG. 5, when the main flat plate 11a becomes larger than a certain size, the reinforcing member 15 may be attached to the inside of the main flat plate 11a. Further, such an electromagnetic shield panel 10 is not only used as a wall or a ceiling as described above, but also a part of the main flat plate 10 is hollowed out and an electromagnetic shielded window or door is attached thereto. Therefore, it goes without saying that it is used as an electromagnetic shield window panel or an electromagnetic shield door panel. In this embodiment, a stainless steel material is used as the electromagnetic shield panel, but a steel material or a steel material plated may be used as long as it has conductivity.

[0018]

According to the present invention, the electromagnetic shield panels can be joined to each other only from the inside of the room, so that the construction is simple and the number of working steps can be reduced.

[Brief description of drawings]

FIG. 1 is an overall perspective view of an electromagnetic shield panel according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

3 is a sectional view taken along line III-III in FIG.

FIG. 4 is an explanatory diagram showing a connected state of the electromagnetic shield panel according to the embodiment of the present invention.

FIG. 5 is an overall front view of another electromagnetic shield panel according to an embodiment of the present invention.

FIG. 6 is an overall perspective view of an electromagnetically shielded room according to an embodiment of the present invention.

[Explanation of reference numerals] 10 ... Electromagnetic shield panel, 11, 11a ... Main flat plate, 1
2 ... Perimeter plate, 13 ... Collar plate, 18 ... Rivet hole, 30 ... Channel material, 91 ... Rivet, 92 ... Copper foil tape.

Claims (4)

[Claims] 1. A main flat plate and a peripheral plate provided at a peripheral edge thereof at a substantially right angle to the main flat plate, wherein the main flat plate and the peripheral plate are made of a conductive material, and at least the An electromagnetic shield panel, wherein a conductive material is exposed on the outer peripheral surface of the peripheral plate. 2. A plurality of holes through which a connector can be inserted are formed in the peripheral plate at intervals of 1/2 or less of the minimum wavelength of electromagnetic waves to be shielded.
The electromagnetic shield panel described. 3. A plurality of electromagnetic shield panels according to claim 1, wherein the peripheral plates are in contact with each other.
An electromagnetically shielded room characterized by being provided. 4. The electromagnetic shield room according to claim 3, wherein a conductive tape is attached to a joint between the plurality of electromagnetic shield panels so as to cross the electromagnetic shield panels.