JPH0745994Y2 - Joint of electromagnetic wave shield material - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a joint joint for the purpose of maintaining the shielding performance of a joint portion of an electromagnetic wave shield material for removing obstacles caused by various electromagnetic waves.

[0002]

2. Description of the Related Art It is known that electromagnetic wave shielding performance can be imparted by mounting a metal plate. However, there are restrictions in finishing and other practical aspects when it is used as an interior material. A method such as spraying a metal onto the metal, vapor deposition of a metal, sticking a metal foil, mixing a conductive filler, mixing a conductive fiber, or applying a conductive paint as another means is adopted. Of these, the joint of the sheet-shaped interior material has an incomplete electromagnetic wave shield,
A method of folding the edge pieces together, a method of sticking an adhesive-attached metal foil tape to the joint, a method of filling a conductive sealing material, and the like are adopted.

[0003]

However, in the method of folding the edge pieces together, if the joining is reliable, a preferable shield performance can be obtained, but since the thickness is more than double, it is difficult to finish the surface flatly. there is a drawback on the up specifications that. Further, in the method of sticking the adhesive-attached metal foil tape to the joint, the adhesive layer serves as a leakage path, and the performance is particularly deteriorated particularly in a high frequency band. The method of filling the conductive sealing material has low performance because the sealing material is mixed with the conductive filler.

The present invention takes the above-mentioned drawbacks into consideration,
An object of the present invention is to provide a structure of a joint portion of an electromagnetic wave shielding material, which can maintain the electromagnetic wave shielding performance of the joint in a high state, can be easily installed, and can finish the surface flat.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention arranges adjacent boards at a slight interval.
Together with the fixing material on the surface side so that it fits in this space.
The above-mentioned boards are made by interposing a joint material formed with a fitting groove.
A sheet having a conductive electromagnetic wave shield layer attached to the surface
Extending each edge of the electromagnetic wave shielding material into the fitting groove
Then, with the extended edge of this electromagnetic shield material
Fixing a fixing member in a form that fits in the fitting groove to the fitting groove,
Of the inner surface of the fitting groove of the joint material or the outer surface of the fixing material on the fitting groove side
One or both of them shall be a conductive surface and should be fixed.
The surface of the electromagnetic shield and the surface of the fixing material are almost
It is characterized in that the joint portion of the electromagnetic wave shielding material is configured so as to have a flat surface .

As a preferred configuration example, the joint material and the fixing material may be formed as concave and convex fitting materials, and the edge portions of both electromagnetic wave shield materials may be sandwiched between the concave and convex fitting portions to form joint joints. .

[0007]

[Operation] Since the joint material or the fixing material is a conductive material that contacts both edges of the electromagnetic wave shield material, and both shield materials are sandwiched between these two materials, the contact is secure and at the same time the both shield materials are spread. The conductivity is maintained, and the electromagnetic wave shielding performance of the joint can be maintained in a high state.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Electromagnetic wave shield material 1 applicable to the present invention
Is formed as a flexible sheet material such as wallpaper. For example, as shown in FIG. 3, a non-combustible material layer (which may be a flame-retardant material layer) lb is provided on the back surface of the electromagnetic wave shield layer 1a. The finishing material layer 1c is laminated. Further, as shown in FIG. 4, the waterproof insulating layers 1d, 1d are formed on both front and back surfaces of the electromagnetic wave shield layer 1a.
The non-combustible material layers 1b and 1b are laminated on both outer side surfaces thereof, and the finishing material layer 1c is further laminated on the outer side surfaces of the surface non-combustible material layer 1b.
Is formed as an appropriate laminate.

The electromagnetic wave shield layer 1a is a film in which a metal foil layer, a metal layer formed by spraying or vapor depositing a metal on a non-combustible material layer or a waterproof insulating layer, a metal foil is attached, a conductive filler, a conductive fiber or the like. Through the use of a sheet layer or any other conductive layer, a flexible material having a uniform thickness can be used.
The most preferable one is a metal foil layer, which has high conductivity and uniform shielding performance, is relatively lightweight, can be easily manufactured, and can be manufactured at relatively low cost, and has a thickness of about 6 to 60 μm. Is particularly preferable.

As the metal foil layer, electrolytic iron foil, electrolytic copper foil,
Rolled iron foil, copper foil, Ji Taniumu foil or stainless steel foil and other conductive metal foil can be used, what the various performances is the best is electrolytic iron foil. When the electrolytic iron foil is used, if the thickness is about 15 to 50 μm, it is possible to obtain an electromagnetic shielding performance of about 60 dB or more.

The non-combustible material layer 1b is, for example, calcium carbonate paper, asbestos paper, flame-retardant treated paper impregnated with a brominated or phosphoric acid-based flame retardant, and preferably has a thickness of about 40 to 500 μm, and solvent-type adhesive. It is laminated by an appropriate adhesive such as an agent.

The finishing material layer 1c is, for example, a polyvinyl fluoride resin or other flame-retardant synthetic resin film or sheet layer, and a colored or non-colored or a printed or non-printed film can be used.

The waterproof insulating layer 1d is formed by film, sheet lamination or primer coating. The film or sheet includes fluororesin, ionomer, nylon, polyethylene terephthalate, polycarbonate,
Polyester, polyethylene, polypropylene, polystyrene, polyeletane, polyvinyl alcohol, polyvinyl chloride, vinylidene chloride, various copolymers such as ABS, AES, EVA, other synthetic resin films, synthetic papers, etc., preferably flame-retardant materials, Electromagnetic wave shield layer 1 by co-extrusion molding, laminate molding such as dry laminating and wet laminating, pressure-bonding molding such as thermocompression bonding, and other appropriate methods.
It is laminated and integrated with a.

In FIGS. 1 and 2, 2 is a joint material and 3 is a fixing material. The joint material 2 is a rectangular column-shaped long material having substantially the same thickness as the electromagnetic wave shielding material sticking board 5 fixed to the beam or the base 4 on the side of the body, and the electromagnetic wave shielding material 1 is provided in the central portion on the surface side. A fixing material fitting groove 6 capable of winding the edge portion is formed, and the fixing material fitting groove 6 is disposed and fixed between adjacent bases 4 and the like.

The fixing member 3 has a corresponding shape to be fitted in the fixing member fitting groove 6, and in the fitted state, an electromagnetic wave shielding material which will be described later is provided between the longitudinal side surface of the fixing member and the inner side surface of the groove 6. A long material which has a shape with a slight gap allowing the ends to be sandwiched, and has a surface which is substantially flat (flush) with the surface of the joint material 2 in the fitted state, and along the length. The surface and the inner side surface of the groove 6 are provided with engaging portions 2a, 3a having concave-convex lines or concave-convex surfaces which are in an engaged state with each other.
Further, one or both of the joint material 2 and the fixing material 3 are formed of a conductive material such as iron, and in the case of a material which is not a conductive material, they are formed as, for example, a plastic extruded material.

Then, as shown in FIG. 1, the joint material 2 is preliminarily fixed between the boards 5 at positions corresponding to the joints of the electromagnetic wave shield material 1, and then, as shown in FIG. The electromagnetic wave shield material 1 is attached so as to extend over the surface portions of the board 5 and the joint material 2, and the laminated body on the front surface side of the extended edge portion of the electromagnetic wave shield layer 1a is cut off or the front and back surfaces side. By peeling off the laminated body, the front surface or front and back surfaces of the electromagnetic shield layer 1a having a slight width is exposed, and the fixing member 3 is fitted by inserting the exposed portion into the fixing material fitting groove 6. The joint of the electromagnetic wave shielding material of the present invention is constructed.

The electromagnetic wave shield material 1 is sandwiched by the electromagnetic wave shield layer 1a at the edge thereof being in surface contact with the joint material 2 of which at least one is made of a conductive material and the fixing material 3.
The adjacent electromagnetic wave shield members 1 and 1 are surely conducted, and the electromagnetic wave shield performance of the joint is sufficiently maintained.

In the above, the electromagnetic wave shielding material 1
May be pasted after exposing the electromagnetic wave shield layer 1a at the edge portion in advance. Also,
It may be inserted into the fixing material fitting groove 6 including the edge portion of the laminated portion along the exposed portion. In this case, since the exposed electromagnetic wave shield layer 1a portion adheres closely, the joint material 2 and the fixing material 3 are provided. It is also possible to form the gap between and with a narrowed shape in two steps or with an inclined shape in which the width is gradually narrowed.

The surface of the fixing material 3 is formed to have the same color as or a different color from the finishing material layer 1c so as to also serve as a finishing material, or even if a finishing material of the same kind as the finishing material layer 1c is attached to the surface. Good.

Unlike the above example, the electromagnetic wave shielding material 1
Can be formed by laminating a non-combustible material layer or waterproof insulating layer and the electromagnetic wave shield layer 1a, and the entire surface of the electromagnetic wave shield layer 1a is exposed, or only the electromagnetic wave shield layer 1a can be formed. In this case, the electromagnetic wave shield material 1 is attached to the board 5 and the edge portion thereof is joined with the joint material 2
And the fixing material 3, and the finishing material layer 1c can be attached to the entire surface including the surface of the electromagnetic wave shielding material 1 and the surface of the fixing material 3 or the finishing material layer 1c can be laminated by coating. .

FIG. 5 shows an example different from the above. The joint material 2 and the fixing material 3 are both extruded from plastic, and the inner surface of the fixing material fitting groove 6 and / or the fixing material 3 is formed. The conductive material 7 may be adhered or coated on the side surface and the back surface.

Although the joint material 2 and / or the fixing material 3 in each of the above-mentioned examples have been described as long materials, they have a short shape so that the edges of the electromagnetic wave shielding materials 1, 1 are intermittently conducted. The electromagnetic wave shielding performance can be maintained without impairing even such intermittent conduction.

When the electromagnetic wave shielding performance of about 40 to 60 dB is satisfactory, the board 5 formed integrally or separately with the connecting edge 8 whose surface is concave along the edge as shown in FIG. The electromagnetic wave shielding material 1 is adhered to the concave surface, the edge of the electromagnetic wave shielding material is brought into contact with the concave surface, and the sticking needle 10 is attached to the bottom surface of the rectangular body 9 straddling the connecting edges 8 of the adjacent boards 5 and 5.
The fixing material 3A formed by protruding 10 can be fixed across the edge portions of both electromagnetic wave shielding materials to form a joint portion. The same applies when a U-shaped needle body is used.

[0024]

As described above, in the joint portion of the electromagnetic wave shield material of the present invention, the joint material 2 is disposed between the adjacent electromagnetic wave shield materials 1 and 1, and the electromagnetic wave is formed by the joint material 2 and the fixing material 3. Since the shield layer 1a is directly in surface contact and is sandwiched, the electromagnetic wave shield materials 1 and 1 are surely conducted to each other, and the electromagnetic wave shield performance of the joint is high and stable. Further, the construction of the joint portion is simple, and stable construction is possible without requiring skill.
In addition, the joint portion and the other surface can be finished to be flat, and by sandwiching them with both materials, the edge portion of the electromagnetic wave shielding material 1 is well-fitted and the appearance can be finished neatly. Furthermore, the surface of the fixing material 3 serving as a joint can be the same color as or different from the surface of the electromagnetic wave shielding material 1, and a desired finish can be achieved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a joint material and a fixing material according to the present invention are separated from each other.

FIG. 2 is a perspective view showing a joint portion of the electromagnetic wave shielding material according to the present invention.

FIG. 3 is a partial sectional view showing an example of an electromagnetic wave shielding material used in the present invention.

FIG. 4 is a partial sectional view showing another example of the electromagnetic wave shield material used in the present invention.

FIG. 5 is a perspective view showing another example of a joint material and a fixing material according to the present invention.

FIG. 6 is a partial sectional view showing an example of a joint portion applicable to a simple shield.

[Explanation of symbols]

 1 Electromagnetic Wave Shielding Material 1a Electromagnetic Wave Shielding Layer 1b Incombustible Material Layer 1c Finishing Material Layer 1d Waterproof Insulating Layer 2 Joint Material 2a Engaging Part 3 Fixing Material 3a Engaging Part 4 Base 5 Board 6 Fixing Material Fitting Groove

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ryoichi Isoyama 4-6-15 Sendagaya, Shibuya-ku, Tokyo Fujita Co., Ltd. (72) Inventor, Morishige Hidagi No. 1 Tomiie-cho, Kanagawa-ku Yokohama Aluminum foil Co., Ltd. (72) Inventor Hiroo Ueno 1 Tomiiecho, Kanagawa-ku, Yokohama, Kanagawa Tokai Aluminum Foil Co., Ltd. (72) Inventor Kazumasa Onishi 2-12-14 Nagata-cho, Chiyoda-ku, Tokyo Ceremony Company ABC Company (72) Inventor Ryuzo Uchida 2-12-14 Nagata-cho, Chiyoda-ku, Tokyo Stock Company Inc. (72) Inventor Koji Ohta 2-12-14 Nagata-cho, Chiyoda-ku, Tokyo Ceremony Company ABC Company (56) Bibliography Shou 59-191792 (JP, U) Seki 60-130693 (JP, U)

Claims (2)

[Scope of utility model registration request] 1. Adjacent boards are arranged at a slight interval.
Together with the fixing material on the surface side so that it fits in this space.
The above-mentioned boards are made by interposing a joint material formed with a fitting groove.
A sheet having a conductive electromagnetic wave shield layer attached to the surface
Extending each edge of the electromagnetic wave shielding material into the fitting groove
Then, with the extended edge of this electromagnetic shield material
Fixing a fixing member in a form that fits in the fitting groove to the fitting groove,
Of the inner surface of the fitting groove of the joint material or the outer surface of the fixing material on the fitting groove side
One or both of them shall be a conductive surface and should be fixed.
The surface of the electromagnetic shield and the surface of the fixing material are almost
Electromagnetic wave shield material having a flat surface
Joints of. 2. The joint of the electromagnetic wave shield material according to claim 1, wherein the joint material and the fixing material are formed as a concave-convex fitting material, and the edges of both shield materials are sandwiched between the concave-convex fitting portions. Department.