JPH07917B2 - Electromagnetic wave shield construction method - Google Patents

Description

The present invention relates to an electromagnetic wave shield construction method used in an electromagnetically shielded room, a casing for shielding electromagnetic waves, and the like.

(Prior art) In the electromagnetic shield method, the performance is greatly affected by the structure of the connecting part of the conductive material. I) Whether the connecting part of the conductive material is pressed to firmly and firmly contact, or ii) Welding or soldering is performed. , Iii) conductive caulking or conductive tape is used, or iv) a connecting part of a conductive material is bent and formed, and a path of a radio wave is formed like a maze.

As a method of the above iv), the present inventors have proposed to Japanese Patent Application No. 63-265.
In No. 45, a metal foil is layered on a base sheet, and a shield sheet that is adhered to the base sheet except for the outer peripheral edge of the foil is laid over the interior surface, and the outer peripheral edge of the metal foil on the adjacent shield sheet The loose piece is folded and folded between the base sheet and the scissor margin, and both side edges of the lower metal foil piece are inserted between the respective scissor margins of the adjacent shield sheets, and then the lower metal foil. While superimposing a wide upper metal foil piece on one piece, by embedding the folded portion of the metal foil of the adjacent shield sheet on both side edges of the upper metal foil piece, as a base sheet of each shield sheet We proposed an electromagnetic wave shield construction method that features continuous stitching.

(Problems to be solved by the invention) In the electromagnetic shield method, since the metal foil and between the metal foil and the base sheet are stapled by the stapler binding device via the fastener, the number of binding portions by the fastener is In many cases, there was a problem that the pressure bonding of the shield foil was not sufficient.

The present invention has been proposed in view of the above problems of the prior art, the purpose of which is simple and quick and surely performed, the labor saving of the panel assembly of the electromagnetic shield,
The point is to provide an electromagnetic wave shield construction method that ensures conductivity.

(Means for Solving the Problem) In order to achieve the above-mentioned object, the electromagnetic shield construction method according to the present invention provides a panel main body provided with a groove groove along a peripheral portion, and an electromagnetic shield thin piece around the peripheral overlap margin. A panel formed by adhering the loose pieces so as to project to the outside of the main body is installed at a predetermined position via an adhesive member, and then the electromagnetic shields for connection are provided between the electromagnetic shield thin pieces of adjacent panels. Along with laminating the thin piece, the both ends of the electromagnetic shielding thin piece for connection are polymerized with the overlapping margin free piece of each of the adjacent panels,
Next, an elastic joint bar is fitted into the groove from the outside of the overlapped portion, and the overlap margin free piece of the electromagnetic shield thin piece in the panel and the end edge of the connecting electromagnetic shield thin piece are crimped to the inner peripheral wall of the groove. It is characterized by doing.

As the electromagnetic shield thin piece, a foil such as a metal foil or a metal vapor deposition film, a metal fiber woven fabric, or a non-woven fabric is used.

(Operation) According to the present invention, as described above, the electromagnetic shield thin piece is attached to the panel main body having the concave groove in the peripheral portion so that the peripheral overlap margin free piece protrudes to the outside of the main body. The electromagnetic shield thin pieces for connection are superposed on each electromagnetic shield thin piece of the adjacent panel built in the position, and both end edges thereof are superposed on the overlapping margin free piece of the metal foil of each panel, from the inside of the superposed section. By fitting the elastic joint bar into the groove, the peripheral free piece of the electromagnetic shield thin piece of the panel body and both ends of the connecting electromagnetic shield thin piece are superposed tightly in the groove by one-touch. It will be crimped.

As described above, the joint portion formed by fitting the joint rod into the peripheral groove of the panel body is formed by superposing and pressure-bonding a plurality of electromagnetic shield thin pieces, and the space extending from the front surface to the rear surface of the joint portion in a labyrinth shape. Thus, the respective electromagnetic shield thin pieces are securely connected to each other without losing conductivity.

(Examples) The present invention will be described below with reference to illustrated examples.

The panel (A) is composed of a rear panel piece (A ₁ ) and a front panel piece (A ₂ ). The panel frame (1) arranged around the rear panel piece (A ₁ ) has a connecting projection. (2) together are protruded, the front surface of the semicircular cross-section concave groove (3) is provided, also arcuate concave groove on the front panel pieces (a ₂₎ panel frame (1 ') (3 ') is provided, and the concave groove (3) is provided.
A groove groove having a circular cross section is formed by and. The groove may be formed in a partially truncated polygonal or polygonal cross section.

For example, metal foil (4A) (4B) (4C) is used as an electromagnetic shield thin piece on each of the front and rear panel pieces (A ₁ ) (A ₂ ) and the free end portion of each panel piece (A ₁ ) (A ₂ ) is Groove (3)
The metal foils (4A) (4B) (4C) and the panel pieces (A ₁ ) (A ₂ ) are sandwiched so as to protrude beyond (3 ′), and are pre-bonded at the factory in the section L, thus A panel (A) is constructed. (See FIG. 9) As a thin piece of electromagnetic shield, a conductive foil such as a conductive film such as a metal deposition film, a metal fiber woven fabric or a non-woven fabric may be used in addition to the metal foil.

The panel frames (1) and (1 ') are made of aluminum mold material, hard plastic or wood, and the rear panel piece (A ₁ ) is made of glass wool, glass wool board,
Consists of glass wool paper, calcium silicate board, metal board, veneer board, etc. Front panel piece (A ₂ ) is composed of veneer board, plaster board, calcium silicate board, aluminum and other metal board, decorative board and other boards It

Then, the panel (A) is installed at a predetermined position through a joining member such as a panel joint fitting (B) and a stud.

In the figure, (5) is a connection recess provided in the panel joint fitting (B), and is configured so that the connection projection (2) of the panel (A) is engaged.

Thus, after the panel (A) is installed at a predetermined position, the connecting metal foil (4D) is inserted between the metal foils (4A) and (4B), and the metal foil (4A) on each panel (A) side is inserted. )(Four
The free end of B) and both edges of the connecting metal foil (4D) are bent and fitted into the groove (3). (See FIG. 1) At this time, as shown in FIG. 7, replace the metal foil (4C) with the metal foil (4C).
It may be extended from E) and wrapped around the same metal foil (4E), and may be folded and held by a joint rod described later.

Next, the connecting metal foil (4E) is inserted on the outer side of the metal foil (4B), and the joint bar (6) is inserted in the arrow X direction between the concave grooves (3) and (3 ') of the panel. It fits in the formed concave groove of the circular cross section. (See FIG. 3) The joint bar (6) is made of an elastic body such as hard rubber and is formed to have the same diameter as the diameter of the groove groove of the above-mentioned circular section, or a slightly larger diameter D ′. Engaging grooves (7) of a pressing plate, which will be described later, are provided on the facing surface of the joint bar (6) at required intervals.

By thus inserting the joint bar (6) into the groove of the circular section of the panel (A), the metal foils (4A) (4B) (4C) adhered to the panel (A). The free piece at the free end is crimped into the groove along with both side edges of the connecting metal foils (4D) and (4E) to obtain a gap-free conduction.

After the joint bar (6) is inserted into the groove, the metal foil is rolled up along with the joint bar (6) and, if necessary, is pressed onto the joint bar (6) by the retainer plate (8). (Refer to FIG. 4) The presser plate (8) has a role of preventing the joint rod (6) from rising, and is made of metal, plastic, or wood. Formed,
Of the joint rods (6) which are formed into a curved surface whose distance from the other end gradually decreases as the other end reaches downward, one of the joint rods (6) facing each other has an engagement groove (7). ) And rotate in the direction of the arrow to press the joint bar (6) of the metal foil and prevent the joint bar (6) from rising.

After that, the joint cover (9) is attached to the hook (8a) using the presser plate (8),
Install via. (See FIG. 4) In FIG. 1, (2 ') is a sealing material provided on the front surface of the panel frame (1).

Although the above-mentioned embodiment shows the case of the panel having the shield layer on one surface, the same method as the above-mentioned embodiment can be applied to the panel having the shield layer on the front surface as shown in FIG.

Instead of the metal foil, a metal vapor deposition film, a metal fiber woven fabric, a non-woven fabric or the like may be used.

(Effects of the Invention) According to the present invention, as described above, a panel obtained by attaching an electromagnetic shield thin piece to a panel body in which a groove is formed along the peripheral portion, leaving a peripheral overlapping margin free piece. After arranging in a predetermined position through the connecting member, the connecting electromagnetic shield thin pieces are arranged between the electromagnetic shield thin pieces of the adjacent panels, and both side edges thereof are superposed on the overlapping margin free piece. After that, by fitting an elastic joint bar to the groove groove from the inside of the overlapping portion, the overlap margin free piece of the electromagnetic shield thin piece and the edge of the connecting electromagnetic shield thin piece are superposed and pressure-bonded to each other. The electromagnetic shield thin piece of the panel is pressure-contacted and joined via the connecting electromagnetic shield thin piece by pressure-bonding to the inner peripheral wall of the groove, so that conduction without a gap can be obtained.

Further, according to the present invention, the electromagnetic shield thin piece of the panel can be joined by a one-touch operation of merely fitting the joint bar to the groove groove provided in the peripheral portion of the panel, and is accompanied by the panel assembly. The assembly error of the joint width can be cleared.

Further, according to the present invention, the construction is simple and reliable,
No special skill such as soldering work is required, shortening the construction period and reducing the construction cost.

Further, since the joint bar forms a parting edge, the finishing material can be easily attached.

Furthermore, according to the present invention, since the airtightness of the electromagnetic shield thin piece joint portion of the panel is maintained, it can be applied to a clean room.

The invention of claim 2 is a metal foil as the electromagnetic shield thin piece,
A metal vapor-deposited film, a metal fiber woven fabric or a non-woven fabric is used, and a simple and low-cost material is used so that the electromagnetic shield method can be performed.

[Brief description of drawings]

1 to 4 are cross-sectional plan views showing the steps of an embodiment of the electromagnetic shield construction method according to the present invention, but the metal foil is omitted in FIGS. 3 and 4. FIG. 5 is a cross-sectional plan view showing the relationship between each panel and the metal foil, FIGS. 6 and 7 are detailed views of portions VI and VII of FIG. 4, respectively, and FIG. 8 is another embodiment of the present invention. FIG. 9 is a cross-sectional plan view showing the panel joint portion constituted by FIG. 9, FIG. 9 is a cross-sectional plan view of the panel, and FIG. 10 is a plan view of the holding plate. (A) …… Panel, (B) …… Panel joint hardware,
(3) (3 ') ...... groove groove, (4A) (4B) (4C) ...... metal foil, (4D) (4E) ...... metal foil for connection, (6) ...... joint bar.

Claims (2)

[Claims] Claim: What is claimed is: 1. A panel formed by adhering an electromagnetic shield thin piece to a panel body provided with a groove in a groove along the peripheral portion such that a peripheral overlapping free piece protrudes to the outside of the main body. Built in a predetermined position through a member, then superimpose the connecting electromagnetic shield thin pieces across the respective electromagnetic shield thin pieces of adjacent panels, and each of the two adjacent edges of the connecting electromagnetic shield thin pieces The overlap margin free piece of the panel is superposed, and then the elastic joint bar is fitted into the groove from the outside of the overlapped portion, and the overlap margin free piece of the electromagnetic shield thin piece in the panel and the edge of the connecting electromagnetic shield thin piece An electromagnetic wave shield construction method characterized in that and are pressure-bonded to the inner circumferential wall of the groove. 2. The electromagnetic wave shield construction method according to claim 1, wherein the electromagnetic shield thin piece is composed of a metal foil, a metal vapor deposition film, a metal fiber woven fabric or a non-woven fabric.