JPH0126149Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electromagnetic shielding panel connecting device for electrically connecting the connecting portions of a large number of electromagnetic shielding panels in series to effectively maintain the electromagnetic shielding effect.

When a magnetically shielded room is constructed from a large number of electromagnetic shielding panels in series, if the electromagnetic shielding materials of adjacent shielding panels are not electrically connected at their joints, the closed surface that shields the inside and outside of the magnetically shielded room will fail. Therefore, electromagnetic waves leak into the shielding chamber from the connecting gap, making it impossible to obtain a good shielding effect.

Conventionally, in order to electrically connect the shielding material at this connecting part, an extension of the shielding material is exposed on the connecting end surface of the shielding panel, and the end surfaces of the panels are brought into close contact with each other.
Although attempts were made to make contact with the shielding material, it was not always possible to make sure contact due to loose contact. There are also methods in which the shielding members are connected to each other using conductive connecting members, but due to the loosening of the connecting members, this method has not been able to completely eliminate the above-mentioned drawbacks.

The purpose of the present invention is to eliminate the above-mentioned drawbacks, and when a large number of electromagnetic shielding panels each having electromagnetic shielding material stretched thereon are connected in series, the electromagnetic shielding material of the electromagnetic shielding panels is extended and the connecting ends of the electromagnetic shielding panels are extended. A connecting piece is formed by supporting a connecting piece exposed on the inner surface of the section and made by covering the outer periphery of a long elastic material with a mesh conductor on a holding frame, and forming a connecting piece from the inside of the connecting end of the adjacent shielding panel. The connecting piece is fixed to the shielding panel by abutting the connecting piece along between the connecting parts, and the electromagnetic shielding material of the adjacent shielding panel is electrically connected via the mesh conductor, and due to the elasticity of the elastic body, The mesh conductor is pressed against the shielding plates of the panel.

An embodiment of the present invention will be described with reference to the accompanying drawings.

Reference numeral 1 denotes an electromagnetic shielding chamber, which is constructed by appropriately connecting a shielding wall 30 to the inside of a support frame 2 assembled in the shape of a rectangular parallelepiped.

The structure of the shielding wall 30 will be explained with reference to FIG. 2. Reference numeral 3 is an electromagnetic shielding panel, which is made by pasting an electromagnetic shielding material 5 such as copper foil on one side of a plywood 4. Electromagnetic shielding panels 3, 3 are connected with a minute gap between them, and vertically long L-shaped connecting spacers 8, 8 are placed inside the connected end portions, facing left and right, and with a gap equal to the minute gap. The electromagnetic shielding material 5, which is stretched over the surface of the electromagnetic shielding panel 3, is extended at its end and stretched over the opposing surface 9 and inner surface 10 of the connection spacer 8. The electromagnetic shielding panel 3,
Nails 1 are attached to the supporting frame material 2 that is in contact with the outside of the connecting portion of 3.
2 and 12 to join. Furthermore, in the concave surface 11 created by the right-angled corner surface of the connection spacer 8,
The connecting piece 15, which is the main part of the present invention, is fixed.

The connection piece 15 will be explained in detail as follows: 1
Reference numeral 6 denotes a vertically elongated holding frame having collar pieces 17, 17 protruding left and right, and a U-shaped fitting groove 18 formed on its inner surface. A connecting piece 21 covered with a mesh conductor 20 made of copper wire or the like is fitted onto the outer periphery of a long elastic material 19 such as a sponge, thereby forming the connecting piece 15. The material of the mesh conductor 20 is the copper wire,
The conductive metal wire is arbitrarily selected from conductive metal wires such as galvanized copper wire or tinned copper wire. The connecting piece 15 has its connecting piece 21 abutted between the inner surfaces 10, 10 of the connecting spacers 8, 8, and the collar pieces 17, 17 are fixed from the inner surfaces 10 of the connecting spacers 8, respectively, with screws 23 or the like. Installed by.

Since the mesh conductor 20 is a knitted material of metal wires, it naturally has flexibility, so the connection piece 21 makes effective use of the elasticity of the elastic material 19.
It presses against the inner surfaces 10, 10 and reliably contacts the electromagnetic shielding materials 5, 5 extending toward the inner surfaces, and the electrical connection is maintained via the mesh conductor 20.

A front panel 27 is formed by connecting a large number of electromagnetic shielding panels 3 on the front side of the connecting spacer 8, and furthermore, on the rear side of the connecting spacer 8,
The same electromagnetic shielding panel 3 as the electromagnetic shielding panel 3 made by stretching the electromagnetic shielding material 5 on the inner surface of the plywood 4 is joined in a continuous manner to form an inner panel 29 parallel to the front panel 27 with a constant gap. The panels 27 and 29 constitute a shielding wall 30.

As clarified from the above description, the present invention provides a connecting piece 21 in which a connecting piece 21, which is made of a long elastic material 19 and a mesh conductor 20 attached to the outer periphery, is supported on a holding frame.
5, the connecting piece 15 is fixed from the inside of the connecting end of each shielding panel 3 along between the connecting parts, and the electromagnetic shielding material 5 of each shielding panel 3 is connected to the mesh conductor 2.
Since the mesh conductor 20 is brought into pressure contact with the adjacent shielding panels 3, 3 by the elasticity of the elastic body 19, the mutual electrical connection between the electromagnetic shielding panels 3, 3 is ensured. This has the effect of preventing electromagnetic waves from passing through the connecting portion and increasing the electromagnetic shielding effect.

[Brief explanation of the drawing]

The accompanying drawings show an embodiment of the present invention, and FIG. 1 is a schematic perspective view of the electromagnetic shielding chamber 1, FIG. 2 is a cross-sectional plan view of the main parts, and FIG. 3 is an exploded perspective view of the connecting piece 15. 1; Electromagnetic shielding chamber; 3; Electromagnetic shielding panel; 5; Shielding material; 8; Spacer; 15; Connection piece; 18; Fitting groove; 19; Elastic material; 20; Mesh conductor;

Claims (1)

[Scope of utility model registration request] When connecting a large number of electromagnetic shielding panels made by stretching electromagnetic shielding material, the electromagnetic shielding material of the electromagnetic shielding panels is extended to expose the inner surface of the connecting end, and a mesh conductor is placed around the outer periphery of the long elastic material. The attached connecting piece is supported on a holding frame to form a connecting piece, and the connecting piece is abutted along between the connecting parts from the inside of the connecting end of the adjacent shielding panel to close the connecting piece. 1. A connecting device for electromagnetic shielding panels, which is fixed to a shielding panel and electrically connects electromagnetic shielding materials of adjacent shielding panels via a mesh conductor.