JPH0685488A - Electromagnetic shielding material - Google Patents
Electromagnetic shielding materialInfo
- Publication number
- JPH0685488A JPH0685488A JP33051092A JP33051092A JPH0685488A JP H0685488 A JPH0685488 A JP H0685488A JP 33051092 A JP33051092 A JP 33051092A JP 33051092 A JP33051092 A JP 33051092A JP H0685488 A JPH0685488 A JP H0685488A
- Authority
- JP
- Japan
- Prior art keywords
- elastic material
- electromagnetic wave
- metal foil
- electromagnetic shielding
- wave shielding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 12
- 239000013013 elastic material Substances 0.000 claims abstract description 50
- 229910052751 metal Inorganic materials 0.000 abstract description 49
- 239000002184 metal Substances 0.000 abstract description 49
- 239000011888 foil Substances 0.000 abstract description 45
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 239000002390 adhesive tape Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電磁波シールド用ガス
ケット、フィルター、遮蔽材等の電磁波シールド材に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic wave shielding material such as an electromagnetic wave shielding gasket, a filter and a shielding material.
【０００２】[0002]
【従来の技術】従来、防塵防水電磁波遮蔽用の電磁波シ
ールド用ガスケット５１として、図８に示すような発泡
シリコン等の弾性材５３に、電磁波を遮断するために多
数の細い金属線５５を埋設させたものを用いてきた。2. Description of the Related Art Conventionally, as an electromagnetic wave shield gasket 51 for dustproof and waterproof electromagnetic wave shield, a large number of thin metal wires 55 are embedded in an elastic material 53 such as foamed silicon as shown in FIG. 8 to shield electromagnetic waves. I have used
【０００３】ところが、金属線５５を埋設させたもの
は、弾性材５３の端部５３ａから金属線５５が突出し、
これを扱う作業者の手等に刺さったりして危険であっ
た。また、電磁波遮断性の点においても金属線５５の配
置によってその間から電磁波が漏出される可能性もあ
り、この点においても満足した性能が得られていなかっ
た。However, in the case where the metal wire 55 is embedded, the metal wire 55 projects from the end portion 53a of the elastic material 53,
It was dangerous because it could get stuck in the hands of workers who handle it. Further, also in terms of electromagnetic wave shielding property, there is a possibility that electromagnetic waves may leak out between them due to the arrangement of the metal wire 55, and also in this respect, satisfactory performance was not obtained.
【０００４】特開昭５７ー１４５３９９号においては、
図９に示すように、傾斜した状態の導電性シート６５を
絶縁性エラストマーからなる成形体（弾性材）６３に一
体化させたシールドガスケット６１が開示されている。
このシールドガスケット６１によれば、平面状であるた
めに上記のような危険もなく、また電磁波を漏出させる
こともかなり減少され、うまく電磁波を遮蔽することが
できる。In JP-A-57-145399,
As shown in FIG. 9, a shield gasket 61 in which a conductive sheet 65 in an inclined state is integrated with a molded body (elastic material) 63 made of an insulating elastomer is disclosed.
According to this shield gasket 61, since it is flat, the above-mentioned danger does not occur, and the leakage of electromagnetic waves is considerably reduced, and electromagnetic waves can be shielded well.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記の
シールドガスケット６１は、導電性シート６５が平面状
であるため、弾性材６３との単位長さ当りの接触面積
（接着の有効面積）が少なかった。このため、弾性材６
３との接着が弱く、弾性材６３と剥離してしまうことが
多々あった。即ち、一部あるいは全ての導電性シート６
５が弾性材６３から抜けてしまうことがあり、電磁波を
確実には遮蔽することができなかった。However, in the above-mentioned shield gasket 61, since the conductive sheet 65 is flat, the area of contact with the elastic material 63 per unit length (effective area of adhesion) is small. . Therefore, the elastic material 6
The adhesion with 3 was weak, and the elastic material 63 was often peeled off. That is, a part or all of the conductive sheet 6
In some cases, the electromagnetic wave 5 could come out of the elastic material 63, and the electromagnetic wave could not be shielded reliably.
【０００６】従って、本発明は、上記課題を解決し、高
い電磁波遮蔽性を有するとともに、導電性シートが弾性
材との剥離を生じにくい電磁波シールド材を提供するこ
とを目的とする。Therefore, an object of the present invention is to solve the above problems and to provide an electromagnetic wave shielding material which has a high electromagnetic wave shielding property and is less likely to cause the conductive sheet from peeling off from the elastic material.
【０００７】[0007]
【課題を解決するための手段】本発明の電磁波シールド
材は、弾性材と凹凸を繰り返す導電性シートとを層状に
積層してなることを特徴とする。The electromagnetic wave shielding material of the present invention is characterized in that it is formed by laminating an elastic material and a conductive sheet in which unevenness is repeated in layers.
【０００８】[0008]
【作用】本発明の電磁波シールド材は、凹凸を繰り返す
導電性シートを用いている。ここで、「凹凸を繰り返
す」とは、たとえ凹凸が各１回ずつのみあるものでもよ
く、また、同じ形状の凹凸を同様に繰り返すものはもち
ろんのこと、必ずしもそうではなく、各々異なる任意な
形状が連続することによって不規則に凹凸が形成されて
いるものでもよい。このため、弾性材との単位長さ当り
の接触面積（接着の有効面積）が多く、弾性材との接着
が強い。しかも、凹凸によって、上下、左右または上下
左右の方向の移動に対しての抵抗が増大する。従って、
弾性材と剥離してしまうことが極めて減少される。この
結果、導電性シートが弾性材から抜けてしまうことが防
止され、電磁波遮蔽性を確実に保つことができる。The electromagnetic wave shielding material of the present invention uses a conductive sheet which repeats unevenness. Here, “repeating unevenness” may mean that unevenness is formed only once, and that it is not necessarily the case that unevenness of the same shape is repeated in the same manner. The irregularities may be formed irregularly by continuous lines. Therefore, the contact area per unit length with the elastic material (effective area of adhesion) is large, and the adhesion with the elastic material is strong. Moreover, the unevenness increases resistance to movement in the vertical and horizontal directions or the vertical and horizontal directions. Therefore,
The separation from the elastic material is greatly reduced. As a result, the conductive sheet is prevented from coming off from the elastic material, and the electromagnetic wave shielding property can be reliably maintained.
【０００９】また、本発明の電磁波シールド材は、導電
性シートが凹凸を有するために、平面状のシートに比べ
て単位長さ当りの面積が大きい。このため、いずれの方
向からきた電磁波もこの凹凸によって遮蔽することがで
き、高い電磁波遮蔽性を有する。Further, the electromagnetic wave shielding material of the present invention has a larger area per unit length than a flat sheet because the conductive sheet has irregularities. Therefore, the electromagnetic waves coming from any direction can be shielded by the unevenness, and the electromagnetic wave shielding property is high.
【００１０】[0010]
【実施例】以上説明した本発明の構成・作用を一層明ら
かにするために、以下に本発明の好適な実施例を説明す
る。 ［実施例１］図１に本第１実施例としての電磁波シール
ド用ガスケット１を示す。本第１実施例の電磁波シール
ド用ガスケット１は、弾性材３と金属箔５とからなる。
弾性材３は、ほぼ直方体の形状あるいは断面長方形の長
尺形状であるが、金属箔５と積層される側面３ａが上下
方向に波状に形成されている。金属箔５は、弾性材３の
側面３ａとほぼ同じように上下方向に波状に形成された
長方形の箔であり、互いに層状に積層されて形成されて
いる。Preferred embodiments of the present invention will be described below in order to further clarify the constitution and operation of the present invention described above. [Embodiment 1] FIG. 1 shows an electromagnetic wave shielding gasket 1 as the first embodiment. The electromagnetic wave shielding gasket 1 of the first embodiment comprises an elastic material 3 and a metal foil 5.
The elastic member 3 has a substantially rectangular parallelepiped shape or an elongated shape having a rectangular cross section, but the side surface 3a laminated with the metal foil 5 is formed in a wave shape in the vertical direction. The metal foil 5 is a rectangular foil that is formed in a wave shape in the up-and-down direction in the same manner as the side surface 3 a of the elastic material 3, and is formed by laminating each other in layers.
【００１１】従来のように金属線または平面状のシート
材を設けた場合には、金属線または平面状のシート材が
弾性材から剥離してしまうことがあった。しかし、本第
１実施例の電磁波シールド用ガスケット１によれば、波
状の金属箔５は、弾性材３との単位長さ当りの接触面積
（接着の有効面積）が多いために弾性材３に強く接着さ
れ、しかも、上下に対しては波状であることにより上下
の移動に対する抵抗が増大しているため、剥離してしま
うことがほとんどない。さらに、金属箔５が上下方向に
対して波状に曲折されているため、金属箔５が弾性材３
の上下の伸縮に応じて広がったり縮んだりすることがで
きる。従って、弾性材３の伸縮に伴い、弾性材３と剥離
してしまうことが防止され、かつ金属箔５が切れてしま
うことも防止される。この結果、金属箔５が弾性材３か
ら抜けてしまうことが防止され、電磁波遮蔽性を確実に
保つことができる。When a metal wire or a flat sheet material is provided as in the prior art, the metal wire or the flat sheet material may be separated from the elastic material. However, according to the electromagnetic wave shielding gasket 1 of the first embodiment, since the corrugated metal foil 5 has a large contact area (effective bonding area) per unit length with the elastic material 3, the elastic material 3 has a large contact area. Since it is strongly adhered and has a wavy shape on the upper and lower sides, resistance to movement in the upper and lower directions is increased, so that it is hardly peeled off. Furthermore, since the metal foil 5 is bent in the vertical direction in a wavy shape, the metal foil 5 is elastic.
It can expand and contract depending on the expansion and contraction of the top and bottom. Therefore, the elastic material 3 is prevented from being separated from the elastic material 3 as the elastic material 3 expands and contracts, and the metal foil 5 is also prevented from being broken. As a result, the metal foil 5 is prevented from coming off from the elastic material 3, and the electromagnetic wave shielding property can be reliably maintained.
【００１２】また、金属箔５は波状であるために、平面
状のシートに比べて単位長さ当りの面積が大きい。この
ため、上部材と下部材との間に接続させて電気的に導通
するように配置させれば、どの角度からどの電磁波Ｄ1
がきてもこの凹凸によって漏れなく遮断することがで
き、高い電磁波遮蔽性を有する。Further, since the metal foil 5 is corrugated, the area per unit length is larger than that of a flat sheet. Therefore, if it is arranged so as to be electrically connected by connecting the upper member and the lower member, which electromagnetic wave D 1
Even if it is scratched, it can be shielded without leakage due to the unevenness, and has a high electromagnetic wave shielding property.
【００１３】さらに、金属箔５はシート状であるため、
弾性材３の端部３ｂから金属箔５が突出しても作業者の
手等に刺さることがなく、安全である。 ［実施例２］図２に本第２実施例としての電磁波シール
ド用ガスケット１１を示す。本第２実施例の電磁波シー
ルド用ガスケット１１は、金属箔１５が左右に対しても
波状に曲折されていることを除き、本第１実施例と同様
に構成されている。Further, since the metal foil 5 has a sheet shape,
Even if the metal foil 5 projects from the end 3b of the elastic material 3, it is safe because it does not get stuck in the hand of the operator. [Embodiment 2] FIG. 2 shows an electromagnetic wave shielding gasket 11 as the second embodiment. The electromagnetic wave shielding gasket 11 of the second embodiment has the same configuration as that of the first embodiment except that the metal foil 15 is also bent in a wavy shape to the left and right.
【００１４】本第２実施例の電磁波シールド用ガスケッ
ト１１は、上記第１実施例と同様な効果を有するうえ
に、さらに、左右に対しても波状であるため、上面１７
及び下面１９から露出した金属箔１５の端辺１５ａの長
さが、弾性材１３の単位長さ当りに対して長く、接地面
積が多いため、上下部材、例えば、シャーシに安定して
接触し、極めて安定した電気的導通状態が得られる。従
って、グランディング効果が高く、インピーダンスも低
くなり、高い電磁波シールド性が得られる。また、弾性
材１５との接触面積がさらに増し、しかも、左右に対し
ても波状であることにより、左右の移動に対する抵抗が
増大するため、弾性材１５との接着も極めて高まる。か
つ、弾性材１３の左右の伸縮に応じても広がったり縮ん
だりすることができる。従って、弾性材１３の左右の伸
縮に伴い、弾性材１３と剥離してしまうことが防止さ
れ、かつ金属箔１５が切れてしまうことも防止される。
この結果、金属箔１５が弾性材１３から抜けてしまうこ
とがさらに防止され、電磁波遮蔽性をさらに確実に保つ
ことができる。The electromagnetic wave shielding gasket 11 of the second embodiment has the same effect as that of the first embodiment, and further, since it is corrugated to the left and right, the upper surface 17
Since the length of the edge 15a of the metal foil 15 exposed from the lower surface 19 is longer than the unit length of the elastic member 13 and the ground contact area is large, the upper and lower members, for example, the chassis, can be stably contacted. A very stable electrical conduction state can be obtained. Therefore, the grounding effect is high, the impedance is low, and a high electromagnetic wave shielding property is obtained. Further, since the contact area with the elastic material 15 is further increased and the corrugation is also left and right, the resistance to the left and right movement is increased, so that the adhesion with the elastic material 15 is extremely enhanced. Moreover, the elastic material 13 can expand and contract according to the lateral expansion and contraction. Therefore, it is prevented that the elastic material 13 is separated from the elastic material 13 due to the lateral expansion and contraction of the elastic material 13, and the metal foil 15 is also prevented from being broken.
As a result, the metal foil 15 is further prevented from coming off from the elastic material 13, and the electromagnetic wave shielding property can be more reliably maintained.
【００１５】また、金属箔５は左右に対しても波状であ
るために、上記第１実施例に比べてさらに単位長さ当り
の面積が大きい。このため、上部材と下部材との間に接
続させて電気的に導通するように配置させれば、どの角
度からどの電磁波Ｄ2がきてもこの凹凸によってさらに
漏れなく遮断することができ、極めて高い電磁波遮蔽性
を有する。Further, since the metal foil 5 is corrugated to the left and right, the area per unit length is larger than that of the first embodiment. For this reason, if the electromagnetic wave D 2 comes from any angle, it can be further shielded by this unevenness by connecting between the upper member and the lower member so that they are electrically conducted, and it is possible to extremely block them. It has high electromagnetic wave shielding properties.
【００１６】［実施例３］図３に本第３実施例としての
電磁波シールド用ガスケット２１を示す。本第３実施例
の電磁波シールド用ガスケット２１は、上記第１実施例
のような電磁波シールド用ガスケット２１ａに、さらに
一側面２７に接着用弾性材２９が設けられている。この
接着用弾性材２９の上下両面２９ａ，２９ｂには、両面
粘着テープＡが接着されている。接着用弾性材２９は、
両面粘着テープＡが配置された状態で、電磁波シールド
用ガスケット２１ａと同じ高さを有する。[Embodiment 3] FIG. 3 shows an electromagnetic wave shielding gasket 21 as a third embodiment of the present invention. In the electromagnetic wave shielding gasket 21 of the third embodiment, the electromagnetic wave shielding gasket 21a as in the first embodiment is further provided with an adhesive elastic material 29 on one side surface 27. Double-sided adhesive tape A is adhered to the upper and lower surfaces 29a and 29b of the adhesive elastic material 29. The adhesive elastic material 29 is
With the double-sided adhesive tape A arranged, it has the same height as the electromagnetic wave shielding gasket 21a.
【００１７】本第３実施例の電磁波シールド用ガスケッ
ト２１は、上記第１実施例と同様な効果を有するうえ
に、一部の上下両面２９ａ，２９ｂに両面粘着テープＡ
が設けられているので、電気的に導通しようとする上下
２つの部材に接着させることができる。従って、安定し
て電磁波シールド用ガスケット２１を部材間に設置させ
ることができる。The electromagnetic wave shielding gasket 21 of the third embodiment has the same effect as that of the first embodiment, and also has a double-sided adhesive tape A on some upper and lower surfaces 29a and 29b.
Since it is provided, it can be adhered to the upper and lower two members that are electrically conducting. Therefore, the electromagnetic wave shielding gasket 21 can be stably installed between the members.
【００１８】尚、上記第３実施例では、両面粘着テープ
Ａを設けた弾性材を一側面のみに設けているが、両側面
又は他方の側面に設けることもできる。 ［実施例４］図４に本第４実施例としての電磁波シール
ド用ガスケット３１を示す。本第４実施例の電磁波シー
ルド用ガスケット３１は、弾性材３３が連続気泡スポン
ジである。また、金属箔３５は、図５にその１枚を取り
出した状態を示すように、多数の円錐台状の凸部３５ａ
を有し、その先端に円形の通気孔３５ｂが設けられてい
る。通気孔３５ｂは、電磁波Ｄ3を漏らすことがないよ
うに、隣接して積層される金属箔３５の通気孔３５ｂ同
士が重ならないように配置される。Although the elastic material provided with the double-sided adhesive tape A is provided on only one side surface in the third embodiment, it may be provided on both side surfaces or the other side surface. [Embodiment 4] FIG. 4 shows an electromagnetic wave shielding gasket 31 as the fourth embodiment. In the electromagnetic wave shielding gasket 31 of the fourth embodiment, the elastic material 33 is an open cell sponge. Further, the metal foil 35 has a large number of truncated cone-shaped projections 35a as shown in FIG.
And a circular ventilation hole 35b is provided at the tip thereof. Vent 35b is so as not to leak the electromagnetic wave D 3, are arranged such vent 35b between the metal foil 35 laminated adjacently do not overlap.
【００１９】本第４実施例の電磁波シールド用ガスケッ
ト３１によれば、上記第１実施例と同様な効果を有する
うえに、弾性材３３が連続気泡スポンジであって、金属
箔３５も通気孔３５ｂを有するため、通気性を有する。
従って、電磁波Ｄ3をシールドするエアフィルターとし
て兼用することができる。According to the electromagnetic wave shielding gasket 31 of the fourth embodiment, in addition to having the same effect as that of the first embodiment, the elastic material 33 is an open-cell sponge, and the metal foil 35 is also the ventilation hole 35b. Therefore, it has breathability.
Therefore, it can also be used as an air filter that shields the electromagnetic wave D 3 .
【００２０】また、金属箔３５は断続する曲面を有する
ために、平面状のシートに比べて単位長さ当りの面積が
大きい。しかも、通気孔３５ｂ同士は、電磁波Ｄ3の方
向に対して重なり合わないように配置されている。この
ため、上部材と下部材との間に接続させて電気的に導通
するように配置させれば、どの角度からどの電磁波Ｄ 3
がきてもこの凹凸によって漏れなく遮断することがで
き、高い電磁波遮蔽性を有する。The metal foil 35 has an intermittent curved surface.
Therefore, the area per unit length is larger than that of a flat sheet.
large. Moreover, the vent holes 35b are connected to each other by the electromagnetic wave D.3Who
It is arranged so that it does not overlap with the direction. this
Therefore, it is electrically connected by connecting it between the upper and lower members.
Which electromagnetic wave D from which angle 3
Even if you wear it, you can shut off without leakage due to this unevenness.
Has a high electromagnetic wave shielding property.
【００２１】［実施例５］図６に本第５実施例としての
電磁波シールド用ガスケット４１を示す。上記各実施例
では、金属箔を上部材と下部材との間に接続させて電気
的に導通するように配置させ、どの角度からどの電磁波
がきても漏れなく遮断させているが、本第５実施例の電
磁波シールド用ガスケット４１は、上記実施例１と同様
な弾性材４３と上記第１実施例と同様な波状の金属箔４
５との積層方向を上下部材４７に対してほぼ平行に配置
させている。この場合には、上記各実施例と同様に金属
箔４５と弾性材４３との剥離がほとんどないうえに、図
６に示すように、Ｄ4方向からきた特に有害な高周波の
みを漏れなく遮蔽することができる。この効果は、金属
箔３５が波状で電磁波Ｄ4を遮蔽するのに一定の幅ｄが
あり、電磁波がぶつかりやすいため、一平面状の金属箔
と比べて極めて高い。[Embodiment 5] FIG. 6 shows an electromagnetic wave shielding gasket 41 as a fifth embodiment of the present invention. In each of the above-described embodiments, the metal foil is connected between the upper member and the lower member so as to be electrically connected, and the electromagnetic wave is shielded without leakage regardless of which electromagnetic wave comes from which angle. The electromagnetic wave shielding gasket 41 of the embodiment has an elastic material 43 similar to that of the first embodiment and a corrugated metal foil 4 similar to that of the first embodiment.
The stacking direction with 5 is arranged substantially parallel to the upper and lower members 47. In this case, the metal foil 45 and the elastic material 43 are hardly separated from each other as in the above-described embodiments, and as shown in FIG. 6, only particularly harmful high frequency waves coming from the direction D 4 are shielded without leakage. be able to. This effect is extremely high as compared with the one-plane metal foil because the metal foil 35 has a wavy shape and has a certain width d for shielding the electromagnetic wave D 4 , and the electromagnetic waves are easily hit.
【００２２】尚、この金属箔４５の配置方向は、適宜変
化させて種々の特定の高周波のみを遮断することができ
る。また、上記第５実施例では、第１実施例と同様な金
属箔と弾性材とを用いているが、目的に応じて他の第２
実施例、第３実施例または第４実施例のような金属箔と
弾性材とを用いても同様な効果が得られる。It should be noted that the arrangement direction of the metal foil 45 can be appropriately changed to block only various specific high frequencies. Further, in the fifth embodiment, the same metal foil and elastic material as in the first embodiment are used, but other second foils are used depending on the purpose.
The same effect can be obtained by using the metal foil and the elastic material as in the embodiment, the third embodiment or the fourth embodiment.
【００２３】上記各実施例によれば、電磁波シールド用
ガスケットを、弾性材と凹凸が繰り返される金属箔とを
積層させて形成させたことにより、その作業が安全にな
り、金属箔の剥離が防止され、しかも電磁波シールド性
が向上されている。尚、上記各実施例では、金属箔を波
状または円錐台状としたが、凹凸を繰り返す形状であれ
ば、これに限定されない。例えば、図７［（イ）にその
斜視図、（ロ）にそのＡ−Ａ端面図］にその１枚を取り
出した状態を示すように、半球状の凸部５０を多数有す
るものでもよく、種々の形状のものが適用できる。ま
た、凹凸は、たとえ凹凸が各１回ずつのみあるものでも
よい。さらに、上記各実施例のように、同じ形状の凹凸
を同様に繰り返すものはもちろんのこと、必ずしもそう
ではなく、各々異なる任意な形状が連続することによっ
て不規則に凹凸が形成されているものでもよい。According to each of the above-described embodiments, the electromagnetic wave shielding gasket is formed by laminating the elastic material and the metal foil having repeated irregularities, so that the work is safe and the peeling of the metal foil is prevented. In addition, the electromagnetic wave shielding property is improved. In each of the above-described embodiments, the metal foil has a wavy shape or a truncated cone shape, but the shape is not limited to this as long as it has a shape in which unevenness is repeated. For example, as shown in FIG. 7 [(a) its perspective view, (b) its AA end view] showing a state where one of them is taken out, it may have a large number of hemispherical projections 50, Various shapes can be applied. Further, the unevenness may be such that there is only one unevenness each. Furthermore, as in the above-mentioned embodiments, not only those in which irregularities of the same shape are similarly repeated, but not necessarily, even irregularities are irregularly formed by successive different arbitrary shapes Good.
【００２４】弾性材としては、ウレタンスポンジ、ネオ
プレンスポンジ、不織布、シリコーンエラストマー、Ｅ
ＰＤＭ等のエラストマー等を用いることができる。ある
いは、導電性不織布や特開昭６３ー２４６０００号公報
に記載されたもの、即ち、炭素繊維片と金属繊維片の両
方もしくはいずれか一方を混入した導電性を有する多数
本の合成樹脂製紡糸が相互に交差されるとともに該交差
点で相互に融着されて立体網状構造となったもの等を用
いて、さらにシールド性を向上させることもできる。As the elastic material, urethane sponge, neoprene sponge, non-woven fabric, silicone elastomer, E
An elastomer such as PDM can be used. Alternatively, a conductive non-woven fabric or one described in JP-A-63-246000, that is, a large number of synthetic resin spun yarns having conductivity in which both carbon fiber pieces and / or metal fiber pieces are mixed It is also possible to further improve the shielding property by using those which intersect each other and are fused together at the intersection to form a three-dimensional network structure.
【００２５】金属箔としては、銅、アルミ、鉄、又はそ
の合金等を用いることができる。また、上記各実施例で
は、金属箔を用いたが、金属箔に限定されず、種々の導
電性シートを用いることができる。さらに、電磁波シー
ルド用ガスケットは、金属箔に凹凸が存在する範囲内で
必要に応じて適当な大きさに切断して用いることもでき
る。この場合においても、同様な効果が得られる。As the metal foil, copper, aluminum, iron, or an alloy thereof can be used. Further, although the metal foil is used in each of the above-mentioned embodiments, the conductive foil is not limited to the metal foil, and various conductive sheets can be used. Furthermore, the electromagnetic wave shielding gasket can be used after being cut to an appropriate size as needed within the range where the metal foil has irregularities. Even in this case, the same effect can be obtained.
【００２６】以上本発明の実施例について説明したが、
本発明はこうした実施例に何等限定されるものではな
く、本発明の要旨を逸脱しない範囲において、種々なる
態様で実施し得ることは勿論である。The embodiment of the present invention has been described above.
The present invention is not limited to these examples, and it goes without saying that the present invention can be implemented in various modes without departing from the gist of the present invention.
【００２７】[0027]
【発明の効果】以上説明したように、本発明の電磁波シ
ールド材によれば、高い電磁波遮蔽性を有するととも
に、導電性シートが弾性材との剥離を生じにくいという
優れた効果を奏する。As described above, according to the electromagnetic wave shielding material of the present invention, it has an excellent effect that it has a high electromagnetic wave shielding property and that the conductive sheet hardly peels off from the elastic material.
【図１】上記第１実施例の電磁波シールド用ガスケット
を表す斜視図である。FIG. 1 is a perspective view showing an electromagnetic wave shielding gasket of the first embodiment.
【図２】上記第２実施例の電磁波シールド用ガスケット
を表す斜視図である。FIG. 2 is a perspective view showing an electromagnetic shield gasket of the second embodiment.
【図３】上記第３実施例の電磁波シールド用ガスケット
を表す斜視図である。FIG. 3 is a perspective view showing an electromagnetic wave shielding gasket of the third embodiment.
【図４】上記第４実施例の電磁波シールド用ガスケット
を表す斜視図である。FIG. 4 is a perspective view showing an electromagnetic wave shielding gasket of the fourth embodiment.
【図５】上記第４実施例の金属箔を表す斜視図である。FIG. 5 is a perspective view showing a metal foil of the fourth embodiment.
【図６】上記第５実施例の電磁波シールド用ガスケット
を表す斜視図である。FIG. 6 is a perspective view showing an electromagnetic wave shielding gasket of the fifth embodiment.
【図７】上記各実施例とは他の金属箔の形状を表す説明
図であり、（イ）はその斜視図、（ロ）はそのＡ−Ａ端
面図である。7A and 7B are explanatory views showing the shape of a metal foil different from those of the above respective embodiments, FIG. 7A is a perspective view thereof, and FIG. 7B is an AA end view thereof.
【図８】従来の電磁波シールド用ガスケットを表す斜視
図である。FIG. 8 is a perspective view showing a conventional electromagnetic shield gasket.
【図９】従来の他の電磁波シールド用ガスケットを表す
斜視図である。FIG. 9 is a perspective view showing another conventional electromagnetic shield gasket.
電磁波シールド用ガスケット……１，１１，２１，３
１，４１、弾性材……３，１３，２３，３３，４３、金
属箔……５，１５，２５，３５，４５。Electromagnetic wave shielding gasket …… 1, 11, 21, 3
1,41, elastic material ... 3,13,23,33,43, metal foil ... 5,15,25,35,45.
Claims (1)
を層状に積層してなることを特徴とする電磁波シールド
材。1. An electromagnetic wave shield material comprising an elastic material and a conductive sheet having irregularities repeatedly laminated in layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33051092A JPH0685488A (en) | 1992-07-15 | 1992-12-10 | Electromagnetic shielding material |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4969992 | 1992-07-15 | ||
| JP4-49699 | 1992-07-15 | ||
| JP33051092A JPH0685488A (en) | 1992-07-15 | 1992-12-10 | Electromagnetic shielding material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0685488A true JPH0685488A (en) | 1994-03-25 |
Family
ID=26390143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33051092A Pending JPH0685488A (en) | 1992-07-15 | 1992-12-10 | Electromagnetic shielding material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0685488A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6410846B1 (en) | 1998-12-15 | 2002-06-25 | Vanguard Products Corporation | Electromagnetic interference shielding device |
| JP2002329993A (en) * | 2001-05-07 | 2002-11-15 | Nippon Jitsupaa Chiyuubingu Kk | Method for manufacturing deformed shield gasket |
| US6613976B1 (en) | 1998-12-15 | 2003-09-02 | Vanguard Products Corporation | Electromagnetic interference shielding gasket |
| WO2008152934A1 (en) * | 2007-06-11 | 2008-12-18 | Fuji Polymer Industries Co., Ltd. | Metal-integral conductive rubber component |
| GB2474695A (en) * | 2009-10-23 | 2011-04-27 | Hesco Bastion Ltd | Auger |
| WO2016203825A1 (en) * | 2015-06-15 | 2016-12-22 | Ｊｘ金属株式会社 | Electromagnetic wave shielding member |
-
1992
- 1992-12-10 JP JP33051092A patent/JPH0685488A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6410846B1 (en) | 1998-12-15 | 2002-06-25 | Vanguard Products Corporation | Electromagnetic interference shielding device |
| WO2000036895A3 (en) * | 1998-12-15 | 2002-09-19 | Vanguard Products Corp | Electromagnetic interference shielding device |
| US6613976B1 (en) | 1998-12-15 | 2003-09-02 | Vanguard Products Corporation | Electromagnetic interference shielding gasket |
| JP2002329993A (en) * | 2001-05-07 | 2002-11-15 | Nippon Jitsupaa Chiyuubingu Kk | Method for manufacturing deformed shield gasket |
| WO2008152934A1 (en) * | 2007-06-11 | 2008-12-18 | Fuji Polymer Industries Co., Ltd. | Metal-integral conductive rubber component |
| US7976927B2 (en) | 2007-06-11 | 2011-07-12 | Fuji Polymer Industries Co., Ltd. | Metal-integral conductive rubber component |
| GB2474695A (en) * | 2009-10-23 | 2011-04-27 | Hesco Bastion Ltd | Auger |
| WO2016203825A1 (en) * | 2015-06-15 | 2016-12-22 | Ｊｘ金属株式会社 | Electromagnetic wave shielding member |
| JP2017005214A (en) * | 2015-06-15 | 2017-01-05 | Ｊｘ金属株式会社 | Electromagnetic shield material |
| US11259449B2 (en) | 2015-06-15 | 2022-02-22 | Jx Nippon Mining & Metals Corporation | Electromagnetic wave shielding material |
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