JPH06876Y2 - Shield structure of electromagnetic shield panel - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] In this invention, a plurality of electromagnetic shield panels are joined so that joints formed by the two sides of these electromagnetic shield panels form a cross shape. The present invention relates to a shield structure of an electromagnetic shield panel.

[Conventional technology]

In recent years, the application of radio waves has advanced, and the number of devices equipped with semiconductors has increased. However, radio wave interference due to electromagnetic waves generated from these devices and malfunction of these devices due to strong electromagnetic fields have become a problem.

Therefore, it is desired to install an anechoic chamber or an electromagnetic shield chamber for testing the electromagnetic wave generation state of these devices and the malfunctioning characteristic due to the electromagnetic field of a strong electric field.

Moreover, there is an increasing tendency to provide an electromagnetically shielded room for the purpose of preventing malfunction of semiconductor devices, particularly computers and automatic control devices.

Conventionally, the ceiling, floor and wall of this type of electromagnetic shield room are constructed by sticking electromagnetic shield panels one by one, and the joints between the electromagnetic shield panels have various shapes that can completely shield electromagnetic waves. Shielding method is applied.

[Problems to be solved by the device]

However, a perfect shield method for the electromagnetic shield panel joint has not yet been developed, and soldering and other methods have been implemented more than ever before.

The soldering method has a very high electromagnetic wave shielding effect, but has a very poor workability.

In addition, in any of the methods generally used in the past, it is necessary to attach a shield member to the joint at the load, and in order to complete the electromagnetic shield, the joint has a complicated shape,
There was no choice but to make the structure, and the processing and construction of the joint was troublesome.

However, if the joint portion is distorted, it may result in a defective joint and the radio wave shielding effect may be significantly reduced or disappeared.

This invention has been proposed in order to solve the above-mentioned conventional problems. A plurality of electromagnetic shield panels are formed so that joints formed by the two sides of these electromagnetic shield panels form a cross shape. When joining, it is possible to easily and reliably join the panels without interfering with each other, and it is possible to shield electromagnetic waves in the electromagnetic shield panel joint almost completely, and to construct the panel joint. It is an object of the present invention to provide a shield structure for an electromagnetic shield panel, which can be easily manufactured, and whose shield effect does not deteriorate even if a slight distortion occurs in the panel joint portion due to an earthquake or the like.

[Means for solving the problem]

In this invention, a connecting piece is continuously provided on two sides of an arbitrary electromagnetic shield panel of a plurality of electromagnetic shield panels in the circumferential direction of the electromagnetic shield panel, and the electromagnetic shield adjacent to the electromagnetic shield panel in a diagonal direction. Connection pieces that overlap the upper side of the connection piece on two sides of the panel are continuously provided in the circumferential direction of the electromagnetic shield panel, and diagonally opposite one side of the remaining two electromagnetic shield panels, the upper side of the connection piece. A connecting piece that overlaps with the other side, a connecting piece that overlaps the lower side of the connecting piece is provided on the remaining side, and a conductive metal plate is wound around the connecting piece, and between the connecting piece and the connecting piece. The object is achieved by interposing elastic sealing materials.

〔Example〕

The present invention will be described below with reference to an illustrated embodiment.

In the electromagnetic shield panel 1, a panel 3 is attached to one side surface of a rectangular frame body 2, connecting pieces 4 and 5 are projectingly provided on the peripheral edge, and the entire surface of the panel 3 and the connecting pieces 4 and 5 is covered. It is configured by bonding a conductive metal plate 6.

The frame body 2 is formed of a shape steel such as lip channel steel into a rectangular frame shape, and a plurality of reinforcing members 7 are attached to the intermediate portion as necessary.

Shaped steel such as angle steel is attached to the four peripheral edges of the frame body 2 by welding, and horizontal portions of the angle steel are connected to the connection pieces 4 and 5.
It has become.

A plurality of electromagnetic shield panels 1 configured in this way
Are jointed so that the joints formed by the two sides of these electromagnetic shield panels 1 form a cross shape.

Further, of the connecting pieces 4 and 5, the connecting piece 4 formed on one of the two electromagnetically shielded panels 1 and 1 that are adjacent to each other in the diagonal direction.
From the slightly front side of the electromagnetic shield panel 1 (panel 3
(From the side) and is continuously projected in the circumferential direction of the electromagnetic shield panel 1.

Further, the connection portion 5 formed on the other electromagnetic shield panel 1 is provided to project slightly further than this, and similarly to the connection piece 4, it is continuously provided to project in the circumferential direction of the electromagnetic shield panel 1.

Therefore, the connection piece 4 and the connection piece 5 do not project in the same plane, but project with a slight step so as to be overlapped.

A plurality of holes 8, ... Are formed in the connecting portion 4 at regular intervals in the longitudinal direction.

The remaining two diagonally adjacent electromagnetic shield panels 1
On one side, the connection piece 4 is projected so as to be stacked on the upper side of the connection piece 5, and on the other side, the connection piece 5 is projected so as to be stacked on the lower side of the connection piece 4.

Although asbestos calcium silicate board, plywood, etc. are used for the panel 3, the present invention is not limited to this, and any material that is light and has some rigidity may be used.

An extremely thin aluminum plate or copper plate is used for the conductive metal plate 6,
The peripheral edge portion of the conductive metal plate 6 is fixed to the connection pieces 4 and 5 by completely winding them around the connection pieces 4 and 5, respectively.

Next, explaining the method of assembling the electromagnetic shield panel configured as described above, for example, in a wall portion, a plurality of electromagnetic shield panels 1 and 1 are installed side by side in the vertical and horizontal directions, and the vertical and horizontal directions are set. Next to the electromagnetic shield panel
1 and 1 are overlapped with these connecting pieces 4 and 5 with the connecting piece 4 having the hole 8 open upward, and between the upper and lower connecting pieces 4 and 5 in the longitudinal direction of the connecting pieces 4 and 5. A braided wire, a conductive rubber, a conductive sealing material, or other electromagnetic sealing material 9 having excellent conductivity and elasticity is interposed, and a tapping screw 10 is screwed into the connection piece 5 below the hole 8 for connection. Piece 4
And 5 are integrally connected to join.

Further, when four electromagnetic shield panels 1,1 adjacent to each other vertically and horizontally are joined at the same time, the connection pieces 4 and 5 of the adjacent electromagnetic shield panels 1,1 are connected to each other with the holes 8 ... The pieces 4 are stacked on top of each other, and the electromagnetic sealing material 9 is continuously interposed between the upper and lower connecting pieces 4 and 5 in the longitudinal direction of the connecting pieces 4 and 5, and the connecting portion 5 below the holes 8 ,. The tapping screw 10 is screwed in to integrally connect and join the connecting portions 4 and 5 (see FIGS. 4 and 5).

Assemble the electromagnetic shield panels on the ceiling and floor by joining them in a similar manner.

Further, work is performed by using a corner electromagnetic shield panel 11 having a substantially L-shaped cross section at a corner portion of a wall portion, a corner portion between a wall portion and a ceiling portion, or a corner portion between a wall portion and a floor portion. Improve sex.

When assembling the electromagnetic shield panels 1 and 1 of the ceiling part, the ceiling shield member 12 such as suspension bolts is screwed together with the connecting portions 4 and 5 by the tapping screw 10, and the ceiling material 13 is attached to the electromagnetic shield panel. 1 The ceiling hanging member 12 can be attached without damaging the conductive metal plate 6 on the surface, and the metal fitting for attaching the ceiling hanging member 12 can be omitted, which is extremely economical (see FIG. 10). ).

The braided wire is formed by twisting or braiding a number of extremely thin metal wires such as copper wires to form a long and narrow flat strip, and has extremely high plasticity. Even if there is a slight distortion in the parts 4 and 5, this can be absorbed without difficulty and the connecting parts 4 and 5 can be electrically connected completely.

[Effect of device]

Since the present invention is configured as described above, it has the following effects.

When a plurality of electromagnetic shield panels are joined so that the joints formed by the two sides of these electromagnetic shield panels form a cross shape, interference between the panels can be avoided, so each electromagnetic shield panel There is an effect that the connecting piece projecting on the can be electrically and surely joined.

In addition, the connecting pieces that are provided on the peripheral edge of the adjacent electromagnetic shield panel are provided so as to vertically overlap with each other, and
A conductive metal plate is wrapped around both connection pieces, and a sealing material rich in conductivity and elasticity is interposed between the stacked connection pieces, so that the connection pieces may have some distortion. Even if it does, it is completely absorbed, and there is an effect that the connecting pieces can be electrically and reliably joined.

Therefore, there is an effect that the electromagnetic shield of the joint portion of the electromagnetic shield panel can be perfectly performed.

[Brief description of drawings]

1 to 10 show an embodiment of the present invention. FIG. 1 is a front view of an electromagnetic shield panel, FIG. 2 is a cross sectional view thereof, and FIG. 3 shows an assembly direction of the electromagnetic shield panel. Sectional views of the wall portion and the ceiling portion shown, FIG. 4 is a front view of a joint portion similarly showing the method for assembling the electromagnetic shield panel, FIG. 5 is a longitudinal sectional view thereof, FIG. 6 is an exploded front view thereof, and FIG. And the eighth
The figure is a cross-sectional view, Fig. 9 is a cross-sectional view of the electromagnetic shield panel joint of the ceiling part, and Fig. 10 is a cross-sectional view of the electromagnetic shield panel joint of the ceiling part showing the mounting state of the ceiling suspension member and ceiling material. Is. DESCRIPTION OF SYMBOLS 1 ... Electromagnetic shield panel, 2 ... Frame body, 3 ... Panel, 4, 5 ... Connection piece, 6 ... Conductive metal plate, 7 ... Reinforcing member, 8 ... Hole, 9 ... Sealing material, 10 ... Tapping screw, 11 ... Electromagnetic shield panel for corner, 12 ... Ceiling suspension member, 13 ... Ceiling material.

Claims (1)

[Scope of utility model registration request] 1. A shield structure for an electromagnetic shield panel, comprising a plurality of electromagnetic shield panels 1 joined together so that joints formed by two sides of the electromagnetic shield panels 1 form a cross shape. Connect the connecting piece 5 to the two sides of any electromagnetic shield panel 1 of the shield panels.
Is provided continuously in the circumferential direction of the electromagnetic shield panel 1,
Connection pieces 4 that overlap the upper side of the connection piece 5 are continuously provided in the circumferential direction of the electromagnetic shield panel 1 on two sides of the electromagnetic shield panel 1 that are diagonally adjacent to the electromagnetic shield panel 1 and face each other in the diagonal direction. , A connecting piece 4 overlapping the upper side of the connecting piece 5 is provided on one side of the remaining two electromagnetic shield panels 1, and a connecting piece 5 overlapping the lower side of the connecting piece 4 is provided on the remaining other side, and A conductive metal plate 6 is wound around and attached to the connection pieces 4 and 5, respectively, and a sealing material 9 having elasticity is interposed between the connection pieces 4 and 5. Panel shield structure.