JPH0247439A - Electromagnetic shielding method - Google Patents

Abstract

PURPOSE:To make continuity sure by erecting a panel on which electromagnetic shield laminas are stuck to the panel body provided with recessed thread grooves in the vicinity thereof, superposing the connecting electromagnetic shield laminas between the laminas and fitting elastic joint bars into the recessed thread grooves. CONSTITUTION:Connecting projections 2 and recessed thread grooves 3 are provided to panel frames 1 of the circumferential edges of rear panel pieces A1, and circular shaped recessed thread grooves 3' are provided to panel frames 1' of front panel pieces A2. Metal foils 4A, 4B and 4C are stuck on end edges. After that, panels A are erected to prescribed positions through joint metal fittings B and others, a connecting metal foil 4D is inserted between the foils 4A and 4B, and the 4D together with the foils 4A and 4B are bent and inserted into the grooves 3. A connecting metal foil 4E is inserted to the outside of the foil 4B, joint bars 6 of hard rubber are inserted into grooves 6, both end edges of the foils 4D and 4E are pressure welded together with the foil 4A etc. and the hold with a hold-down plate, and a joint cover is mounted.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an electromagnetic shielding method applied to ':rL magnetically shielded rooms, casings that shield electric Mi waves, and the like.

(Conventional technology) In the electromagnetic soldering method, the performance is greatly affected by the structure of the connection part of the conductive material, and it is difficult to determine whether i) pressurize the connection part of the conductive material f'l to make a firm pressure contact, or 1)) weld or hang it. iii) using conductive caulk or conductive tape; or iv) bending and forming the connecting portion of the conductive material to form a maze-like path for the radio waves.

As method iv), the present inventors have proposed a patent application for
- In No. 26545, a shield sheet made by layering metal foil on a base sheet and bonding it to the base sheet except for the outer peripheral edge of the Ministry of the Ministry of Health and Welfare is spread over the indoor surface, and the outer peripheral edge of the metal foil on the adjacent shield sheet. ζ-fold the MR piece leaving a scissor allowance between it and the base sheet, insert both side edges of the lower metal foil piece across the scissors of the adjacent shield sheets, and then fold the MR piece over the lower metal foil piece. At the same time, the wide upper gold B foil piece is superimposed, and the folded portions of the metal foils of the adjacent shield sheets are hugged by both sides of the upper metal foil piece, and the base sheet of each shield sheet is coated. We proposed an electromagnetic shielding method characterized by continuous binding.

(Problem to be Solved by the Invention) In the electromagnetic soldering method, each metal bar and gold B
Since the Wta and the base sheet are continuously stapled via a fastener by a stapler paper binding device, there is a problem that the number of consecutively bound portions by the fastener is large and the pressure bonding of the shield foil is not sufficient.

The present invention has been proposed in view of the problems of the prior art, and its objectives are to make the construction simple, quick and reliable, to save labor in assembling electromagnetic shielding panels, and to improve conductivity. The aim is to provide a TL electromagnetic wave shielding method that ensures safety.

(Means for Solving the Problem) In order to achieve the above-mentioned object, the electromagnetic shielding method according to the present invention includes a panel body in which grooves are provided along the periphery, and an electric θ shield thin piece is attached to the panel body along the periphery. A panel in which the overlapping allowance free piece is attached so as to protrude outside the main body is erected at a predetermined position via a connecting member, and then the panel is inserted between each of the electromagnetic shields PII'+ of adjacent panels. At the same time as overlapping the connecting electromagnetic shielding thin pieces, both ends of the connecting electromagnetic shielding thin pieces are overlapped with the overlapping allowance loose pieces of each of the adjacent panels, and then an elastic joint bar is inserted into the groove from the outside of the overlapping part. The electromagnetic shielding thin piece is inserted into the panel, and the overlapping free piece of the electromagnetic shielding thin piece in the panel and the end edge of the connecting electromagnetic shielding thin piece are press-bonded to the inner circumferential wall of the groove.

Note that as the electromagnetic shield thin piece 1r1, a foil-like material such as a metal foil, a metal-deposited film, a metal fiber fabric, or a nonwoven fabric is used.

(Function) According to the present invention, as described above, an electromagnetic shielding thin piece is attached to a panel body provided with grooves j& on the periphery in such a way that the loose pieces of overlap in the periphery protrude to the outside of the body. The connecting electromagnetic shielding thin pieces are superposed on each of the electromagnetic shielding thin pieces of the adjacent panels built in the same position, and both edges of the connecting electromagnetic shielding thin pieces are superimposed on the overlapped free pieces of the metal foil of each panel, and from the inside of the overlapping part. By fitting the elastic joint rod into the groove, the peripheral loose piece of the electromagnetic shielding thin piece of the panel body and both ends of the electromagnetic shielding thin piece for connection are tightly overlapped in the groove with one touch. It will be crimped.

As described above, the joint formed by fitting the joint rod into the peripheral concave groove of the panel body is composed of a plurality of electromagnetic shielding thin pieces overlapped and crimped, and the space extending from the front surface to the back surface of the joint is formed into a labyrinth shape. The electromagnetic shielding thin pieces are connected reliably without loss of conductivity.

(Example) The present invention will be described below with reference to the illustrated embodiments.

The panel (A) is composed of a rear panel piece (A1) and a front panel piece (A2), and the panel frame (1) arranged around the periphery of the rear panel piece (^, ) is provided protrudingly, and a four-striped groove (3) with a semicircular cross section is provided on the front surface, and a panel piece (1') of the front panel piece (A2) is provided.
) is provided with an arcuate groove (3'), and 1) and 1) the groove (3) form a groove with a truncated circular cross section. Note that the groove may have a partially cut-off rectangular shape or a polygonal cross section.

For example, metal foil (4A) (4B) (4C) is attached to the front and rear panel pieces (AI) (AX) as electromagnetic shielding thin pieces.
is sandwiched so that its free end protrudes beyond the grooves (3) (3') from each panel piece (AI) (At),
The respective metal fa (4A) (4B) (4C) and the panel pieces (AI) (Ax) are bonded in advance at the factory in sections, thus forming the panel (A). (See FIG. 9) In addition to metal foil, a conductive foil-like material such as a tetraelectric film such as a metal-deposited film, or other metal fiber fabric or non-woven fabric may be used as the electromagnetic shielding thin piece.

The panel frame (F) (1') is made of aluminum profile, hard plastic, wood, etc., and the rear panel piece (AI) is made of glass wool, glass wool board, glass wool, calcium silicate board, metal plate, plywood board, etc. The front panel piece (A2) is composed of a plywood board, a plaster board, a calcium silicate board, an aluminum or other metal board, a decorative board or other boards.

Then attach the panel (^) to the panel joint fitting (B).
, installed in a predetermined position via a connecting member such as a stud.

In the figure, (5) is a connection recess provided in the panel joint fitting (B), and is configured so that the connection protrusion (2) of the panel (A) described in 1) is engaged therein.

After the panel (^) is thus erected in a predetermined position, a connecting metal foil (4D) is placed between the metal foils (4A) and (4B).
At the same time, insert the metal foil (
4A) Free end of (4B) and metal foil for connection (4D)
Bend both end edges of and fit into the groove (3). (See Figure 1) At this time, as shown in Figure 1, the metal foil (4C) may be extended from the metal foil (4E) so as to wrap around the same metal foil (4D), folded, and pressed with a joint bar described later. good.

Next, a connecting metal foil (4E) is inserted outside the metal foil (4B), and a joint bar (6) is formed between the concave grooves (3H3') of the panel in the direction of arrow X (see Fig. 2). It fits into a four-strip groove with a cut-out circular cross section. (See Fig. 3) The joint rod (6) is made of an elastic material such as hard rubber, and is formed to have a diameter D' that is equal to or slightly larger than the diameter of the concave groove with the circular cross section, and - Engagement grooves (7) for presser plates, which will be described later, are provided at required intervals on the opposing surfaces of the twin joint bars (6).

In this way, by fitting the joint bar (6) into the concave groove of the cut-out circular cross section of the panel (^), the same panel (A
) The metal foils (4A) (4B) (4C
) The free end piece of the connecting metal foil (4D) (4E
) are crimped into the concave groove together with both side edges of the groove, thereby providing continuity without gaps.

After inserting the joint bar (6) into the groove, the metal foil is wound around the joint bar (6) and pressed against the joint bar (6) with a presser plate (8) if necessary. (See Figure 4) The holding plate (8) has the role of preventing the joint bar (6) from lifting up, and is made of metal, plastic, or wood, and one end has an arc shape as shown in Figure 10. The engagement of one of the joint rods (6) formed in a curved shape in which the distance from one end gradually decreases as the other end edge moves downward, and the one end of the joint rods (6) faces each other. By engaging with the groove (7) and rotating in the direction of arrow Y, the metal foil is pressed onto the joint bar (6) and the joint bar (6) is prevented from lifting up.

After that, the joint cover (9) is attached to the hook (9a) using the weight plate (8).
Install via. (See Figure 4) In the figure, (2') is a connecting protrusion that protrudes from the front of the panel frame (1), and is used to secure a base material for attaching metal foil if necessary. .

Although the above embodiment shows the case of a panel having a shield layer on one side, the same method as in the above embodiment can be applied to a panel having shield layers on both sides as shown in FIG.

Note that a metallized film, metal fiber fabric, nonwoven fabric, etc. may be used instead of the metal foil.

(Effects of the Invention) According to the present invention, as described above, a panel is formed by adhering an electromagnetic shielding thin piece to a panel body in which grooves are formed along the periphery, leaving loose pieces for overlap in the periphery. is installed in a predetermined position via a connecting member, and then a connecting electromagnetic shielding thin piece is arranged between the electromagnetic shielding thin pieces of adjacent panels, and the both sides of the connecting electromagnetic shielding thin pieces are placed in the overlapping width 'ifi separation pieces. Then, by fitting an elastic joint rod into the concave groove from the inside of the overlapping part, the loose piece of the overlap margin of the "I magnetic shield thin piece and the edge of the connecting T1 magnetic shield thin piece are overlapped." By press-fitting it to the inner circumferential wall of the concave groove in a press-contact state, the Ti electromagnetic shield plate of the panel is press-fitted and joined via the TL electromagnetic shield plate for connection, so that continuity without gaps can be obtained. .

Further, according to the present invention, the electromagnetic shielding thin pieces of the panel can be joined by a one-touch operation of simply fitting a joint bar into the concave groove provided at the periphery of the panel. Eliminates assembly errors in joint width.

Furthermore, according to the present invention, construction can be carried out easily and reliably,
No special skills such as soldering balls are required, shortening the construction period and reducing construction costs.

Furthermore, since the joint bar serves as a cut edge, the finishing material can be easily applied.

Furthermore, according to the present invention, the airtightness of the electromagnetic shield thin plate joints of the panel is maintained, so that it can be applied to clean rooms as well.

The invention of claim 2 provides the above T1. Metal foil, metal-deposited film, metal fiber fabric, or non-woven fabric is used as the Ta shield thin piece, so that the electromagnetic shielding method described above can be carried out using simple and low-cost materials.

[Brief Description of the Drawings] Figures 1 to 4 are cross-sectional plan views showing the steps of an embodiment of the electromagnetic shielding method according to the present invention, but the metal foil is omitted in Figures 3 and 4. It shows. 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 ■ and ■ in FIG. 4, respectively, and FIG. 8 is another embodiment of the present invention. FIG. 9 is a cross-sectional plan view showing a panel joint constructed according to an example;
Figure 0 is a plan view of the presser plate. (A) Panel, (B) - Panel joint hardware, (3) (3') - Concave groove, (4A) (4B)
(4C) - Metal foil, (4D) (4E) - Metal foil for connection, (6) - Joint bar. Agent: Patent attorney: Shige Okamoto (2 persons) Figure 1

Claims (2)

[Claims] (1) Connect a panel made by attaching an electromagnetic shielding thin piece to a panel body with a concave groove along its periphery in such a way that the free pieces of overlap around the periphery protrude to the outside of the body, and attach the connection member to the panel body. Then, the connecting electromagnetic shielding thin pieces are overlapped between the electromagnetic shielding thin pieces of the adjacent panels, and both ends of the connecting electromagnetic shielding thin pieces are overlapped between the electromagnetic shielding thin pieces of the adjacent panels. overlap the loose piece with overlap allowance, and then insert an elastic joint bar into the groove from the outside of the overlapping part to connect the loose piece with overlap allowance of the electromagnetic shielding thin piece in the panel and the edge of the connecting electromagnetic shielding thin piece. An electromagnetic shielding method characterized by crimping the inner circumferential wall of the groove. (2) The electromagnetic shielding method according to claim 1, wherein the electromagnetic shielding thin piece is made of metal foil, metallized film, metal fiber fabric, or nonwoven fabric.