JPH027519Y2 - - Google Patents
Info
- Publication number
- JPH027519Y2 JPH027519Y2 JP1985017503U JP1750385U JPH027519Y2 JP H027519 Y2 JPH027519 Y2 JP H027519Y2 JP 1985017503 U JP1985017503 U JP 1985017503U JP 1750385 U JP1750385 U JP 1750385U JP H027519 Y2 JPH027519 Y2 JP H027519Y2
- Authority
- JP
- Japan
- Prior art keywords
- metal
- electromagnetic wave
- shielding
- woven fabric
- fibers
- 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.)
- Expired
Links
- 229910052751 metal Inorganic materials 0.000 claims description 48
- 239000002184 metal Substances 0.000 claims description 48
- 239000002759 woven fabric Substances 0.000 claims description 20
- 229920000914 Metallic fiber Polymers 0.000 claims description 8
- 239000004744 fabric Substances 0.000 description 19
- 239000000835 fiber Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 230000005684 electric field Effects 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 229920002994 synthetic fiber Polymers 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Aerials With Secondary Devices (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
本考案は、織布形式に構成され、可撓性を有す
る電磁波遮蔽用織布に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electromagnetic wave shielding fabric that is constructed in the form of a woven fabric and has flexibility.
［従来の技術］
近年、電磁波の反射および遮蔽を行なう材料と
して、可撓性を有して、多様な空間形態に対応し
て使用し得るものが要求されている。例えば、平
面は勿論、放物面、円柱面、球面等の種々の曲面
を覆うことのできる材料が要求されている。[Prior Art] In recent years, there has been a demand for materials that reflect and shield electromagnetic waves that are flexible and can be used in a variety of spatial configurations. For example, there is a demand for materials that can cover not only flat surfaces but also various curved surfaces such as paraboloids, cylindrical surfaces, and spherical surfaces.
従来、この種の材料として、金属そのものを繊
維として織つた織布がある。例えば、特開昭58−
173899号公報には、非晶質合金のワイヤと銅線と
を交互に織つた遮蔽材が開示されている。 Conventionally, as this type of material, there is a woven fabric made of metal itself as fibers. For example, JP-A-58-
Japanese Patent No. 173899 discloses a shielding material in which amorphous alloy wires and copper wires are alternately woven.
また、非金属繊維からなる織布の表面に、アル
ミニウム等の金属膜をコーテイングして形成され
る電磁波遮蔽用織布がある。これに類似するもの
として、例えば、実公昭44−18565号公報には、
合成繊維糸条に半導電性塗料を塗布した半導電性
線条を用いて織り上げた半導電性織布の適当位置
に、合成繊維糸条に導電性塗料を塗布した導電性
線条を配置した導電性織布が開示されている。 Further, there is a woven fabric for shielding electromagnetic waves that is formed by coating the surface of a woven fabric made of non-metallic fibers with a metal film such as aluminum. Similar to this, for example, Japanese Utility Model Publication No. 44-18565 states:
Conductive filaments made of synthetic fiber yarns coated with conductive paint are placed at appropriate positions on a semiconductive woven fabric woven using semiconductive filaments made of synthetic fiber yarns coated with semiconductive paint. A conductive woven fabric is disclosed.
さらに、金属繊維と非金属繊維とを織り混ぜて
構成される電磁波遮蔽用織布もある（実公昭42−
12489号公報参照）。 Furthermore, there are woven fabrics for shielding electromagnetic waves that are made by interweaving metal fibers and non-metallic fibers.
(See Publication No. 12489).
これらの電磁波遮蔽用織布は、いずれも電界に
作用を及ぼす性質を有し、しかも、可撓性を有し
ている。従つて、上述したような曲面空間等を覆
つて、電磁波を反射したり、遮蔽したりすること
ができる。 All of these electromagnetic wave shielding fabrics have the property of acting on an electric field and are flexible. Therefore, it is possible to cover the above-mentioned curved space and the like to reflect or shield electromagnetic waves.
しかし、これら従来の電磁波遮蔽用織布には、
実用上、次に示す問題点があつた。 However, these conventional electromagnetic wave shielding fabrics have
In practice, the following problems arose.
［考案が解決しようとする問題点］
上記従来の電磁波遮蔽用織布のうち、金属その
ものを繊維として織つた電磁波遮蔽用織布は、遮
蔽効果は大きいものの、織ることが必ずしも容易
ではないこと、重量がかさむこと、染色が容易で
ないことなどの問題がある。 [Problems to be solved by the invention] Among the conventional electromagnetic wave shielding fabrics mentioned above, electromagnetic wave shielding fabrics woven from metal itself as fibers have a great shielding effect, but are not necessarily easy to weave; There are problems such as being heavy and not easy to dye.
また、織布の表面に金属膜をコーテイングして
形成されるものは、折曲げを何回も繰返したり、
長期間折曲げた状態にしておくと、折曲げ箇所に
亀裂を生じ、その部分からコーテイング膜の剥離
が起こり、遮蔽特性が悪化するという欠点があ
る。 In addition, fabrics formed by coating the surface of woven fabric with a metal film may require repeated bending,
If left in a bent state for a long period of time, cracks will occur at the bent portion, and the coating film will peel off from the bent portion, resulting in deterioration of the shielding properties.
一方、一般の繊維と金属製の線条（以下、金属
線条という。）とを混織して構成される織布は、
重量の増加が少なく、また、一般の繊維の特性が
活されて、可撓性を十分高く保持できるという利
点がある。ところが、この場合は、対象とする電
磁界の周波数と、金属線条または金属繊維の径お
よび配設間隔とが規定されていないため、常に、
十分な電磁波遮蔽特性を得ることは困難であつ
た。 On the other hand, woven fabrics made of a mixture of ordinary fibers and metal filaments (hereinafter referred to as metal filaments) are
It has the advantage that there is little increase in weight, and the characteristics of ordinary fibers are utilized to maintain a sufficiently high level of flexibility. However, in this case, the frequency of the target electromagnetic field and the diameter and spacing of the metal wires or metal fibers are not specified, so
It has been difficult to obtain sufficient electromagnetic wave shielding properties.
本考案は、上記問題点を解決すべくなされたも
ので、その第１の目的は、金属線条を布地内に所
定間隔にて配置して織込み、任意の偏波電磁波に
対し、十分大きい遮蔽効果を有する電磁波遮蔽用
織布を提供することにある。 The present invention was made to solve the above problems, and its first purpose is to weave metal wires into the fabric by arranging them at predetermined intervals to provide a sufficiently large shield against arbitrary polarized electromagnetic waves. An object of the present invention is to provide a woven fabric for shielding electromagnetic waves that is effective.
また、本考案の第２の目的は、軽量かつ安価
で、しかも、染色が容易な電磁波遮蔽用織布を提
供することにある。 A second object of the present invention is to provide an electromagnetic shielding fabric that is lightweight, inexpensive, and easy to dye.
［問題点を解決するための手段］
本考案は、一般の非金属繊維からなる織布の経
および緯の両者に、適当な間隔で金属線条を配し
て構成される電磁波遮蔽用織布において、上記金
属線条の間隔ａおよび線径ｄを、対象電磁波の波
長λに対し、不等式
log10ａ／λ≦6.19ｄ／ａ−3.06 …(1)
および
0.05≦ｄ／ａ≦0.32 …(2)
を満足するよう設定して構成されることを特徴と
する。[Means for solving the problem] The present invention provides an electromagnetic wave shielding woven fabric which is constructed by arranging metal stripes at appropriate intervals in both the warp and weft of a woven fabric made of general non-metallic fibers. In this case, the spacing a and the wire diameter d of the metal wires are determined by the inequality log 10 a/λ≦6.19d/a−3.06 …(1) and 0.05≦d/a≦0.32 …( 2) is characterized by being configured to satisfy the following.
［作用］
本考案の電磁波遮蔽用織布は、一般の繊維と金
属線条とを混織して構成されるため、重量の増加
が少なく、染色も容易である。[Function] The woven fabric for shielding electromagnetic waves of the present invention is composed of a mixed weave of ordinary fibers and metal filaments, so that the increase in weight is small and dyeing is easy.
また、本考案の電磁波遮蔽用織布は、一般の繊
維の特性が活されて、可撓性を十分高く保持する
ことができるところから、曲率の大きい空間形態
に対する適用が可能となり、種々の用途に使用で
きる。 In addition, the electromagnetic wave shielding fabric of the present invention takes advantage of the characteristics of ordinary fibers and can maintain a sufficiently high level of flexibility, making it possible to apply it to spatial forms with large curvature, making it suitable for a variety of applications. Can be used for
さらに、本考案の電磁波遮蔽用織布は、金属線
条の線径および配置間隔を、上記問題点解決手段
において示した第１式および第２式を満足するよ
うに選定することにより、任意の電磁波に対し、
十分に高い遮蔽効果を得ることができる。この場
合、金属線条と一般の繊維とを混織しているの
で、金属線条のみで構成したものと異なり、各金
属線条が一般の繊維の経糸および緯糸により固定
され、それらの配置間隔が変化しにくく、いわゆ
る、目崩れを起こしにくいので、各金属線条の相
互間隔を正確に保持することができる。従つて、
織布全体の広い面積にわたつて、対象電磁波に対
して作用する。 Furthermore, the woven fabric for electromagnetic wave shielding of the present invention can be used in any desired manner by selecting the wire diameter and arrangement interval of the metal filaments so as to satisfy the first and second equations shown in the above-mentioned problem solving means. For electromagnetic waves,
A sufficiently high shielding effect can be obtained. In this case, since the metal filaments and general fibers are mixed, unlike a structure composed only of metal filaments, each metal filament is fixed by the warp and weft of the general fibers, and the arrangement interval between them is Since it is difficult to change and cause so-called eye collapse, the mutual spacing between the metal wires can be maintained accurately. Therefore,
It acts on target electromagnetic waves over a wide area of the entire woven fabric.
［実施例］
本考案の実施例について、図面を参照して説明
する。[Example] An example of the present invention will be described with reference to the drawings.
＜実施例の構成＞
第１図に本考案に係る電磁波遮蔽用織布の一実
施例の部分拡大図を示す。<Configuration of Example> FIG. 1 shows a partially enlarged view of an example of the electromagnetic wave shielding fabric according to the present invention.
同図に示す電磁波遮蔽用織布は、一般の布地に
用いられる非金属繊維糸からなる経糸１および緯
糸２と、金属線条からなる経糸３および緯糸４と
混織して形成される。 The woven fabric for shielding electromagnetic waves shown in the figure is formed by weaving warps 1 and wefts 2 made of non-metallic fiber yarns used in general fabrics, and warps 3 and wefts 4 made of metal filaments.
非金属繊維糸としては、電磁波遮蔽用織布の用
に合せて、天然繊維または人造繊維のいずれをも
使用することができる。例えば、綿、ナイロン、
ガラス繊維等を単独で、または、適宜組合せて使
用することができる。 As the non-metallic fiber thread, either natural fiber or artificial fiber can be used depending on the use of the electromagnetic wave shielding fabric. For example, cotton, nylon,
Glass fibers and the like can be used alone or in appropriate combinations.
金属線条としては、アルミニウム、銅等の金属
線、または、１種若しくは２種以上の金属線から
なる撚り線を用いることができる。この外、用途
によつては、金属線と非金属線とを撚り合せたも
のや、金属繊維または炭素繊維を使用することも
できる。従つて、本明細書における金属線条と
は、金属のみならず、炭素等の導体を含むもので
ある。 As the metal wire, a metal wire such as aluminum or copper, or a twisted wire made of one or more metal wires can be used. In addition, depending on the application, a combination of metal wires and non-metal wires, metal fibers, or carbon fibers may also be used. Therefore, the metal wire in this specification includes not only metal but also a conductor such as carbon.
上記金属線条からなる経糸３および緯糸４は、
各々の間隔ａおよび線径ｄが、対象電磁波の波長
λに対し、不等式
log10ａ／λ≦6.19ｄ／ａ−3.06
および
0.05≦ｄ／ａ≦0.32
を満足するように設定する。 The warp 3 and weft 4 made of the metal filaments are
Each interval a and wire diameter d are set so as to satisfy the inequality log 10 a/λ≦6.19d/a−3.06 and 0.05≦d/a≦0.32 with respect to the wavelength λ of the target electromagnetic wave.
なお、上記範囲であれば、経方向、緯方向にお
いて、各々線条の異なる金属線条を用い、異なる
間隔で織込んでもよい。 In addition, within the above range, metal filaments with different filaments may be used and woven at different intervals in the warp direction and the weft direction.
また、上記経糸１と３、緯糸２と４は、各々所
定の間隔にて織込まれている。即ち、本実施例で
は、経糸１と経糸３とは、前者２本、後者を１本
の割で等間隔にて並列配置し、経の基本格子を構
成している。一方、緯糸２と４とは、両者を交互
に等間隔にて並列配置し、緯の基本格子を構成し
ている。そして、これらの基本格子を、各々等間
隔にて配置するように、織つてある。 Further, the warps 1 and 3 and the wefts 2 and 4 are woven at predetermined intervals. That is, in this embodiment, the warp threads 1 and 3 are arranged in parallel at equal intervals, two of the former and one of the latter, to form a basic warp lattice. On the other hand, the weft yarns 2 and 4 are alternately arranged in parallel at equal intervals to form a basic weft lattice. These basic lattices are woven so as to be arranged at equal intervals.
金属線条にて構成される経糸３と、緯糸４の
各々の線径および間隔は、対象となる電磁波の波
長λにより決定される。 The diameter and interval of each of the warp threads 3 and the weft threads 4, which are made of metal filaments, are determined by the wavelength λ of the target electromagnetic wave.
例えば、緯糸４については、線径0.13mmの金属
線条を、0.7mmおきに並列配置すると、波長100mm
以上（周波数3GHz以下）の電磁波が入射した場
合、該金属線条に平行な偏波成分の透過量を、−
40dB以下に抑えることができる。この遮蔽特性
は、金属板のそれには及ばないものの、一般の使
用に対しては、何ら問題がなく、十分に効力を発
揮するものである。 For example, for weft thread 4, if metal wires with a wire diameter of 0.13 mm are arranged in parallel every 0.7 mm, the wavelength will be 100 mm.
When an electromagnetic wave with a frequency of 3 GHz or higher is incident, the amount of transmission of the polarized component parallel to the metal wire is -
It can be suppressed to 40dB or less. Although this shielding property is not as good as that of a metal plate, it is sufficiently effective for general use without any problems.
＜実施例の作用＞
上記のように構成される実施例の電磁波遮蔽用
織布の電磁波に対する作用について、図面を参照
して説明する。<Effect of the Example> The effect of the electromagnetic wave shielding fabric of the example configured as described above against electromagnetic waves will be described with reference to the drawings.
なお、上記実施例では、経緯の両者に金属線条
が織込まれているが、説明を簡単にするため、こ
こでは、本考案の理論モデルとして、第２Ａ，２
Ｂ図に示すような、無限本の金属線条５を経方向
に配置してなる格子に、これと平行な偏波成分の
みを持つ電界Ｅが入射する場合を想定する。 In addition, in the above-mentioned example, metal wires are woven into both the weaves, but in order to simplify the explanation, here, as a theoretical model of the present invention,
Assume that an electric field E having only polarization components parallel to the grating is incident on a grating made up of an infinite number of metal wires 5 arranged in the longitudinal direction, as shown in Figure B.
第２Ａ図において、格子の存在する媒質の特性
イピーダンスをZoとすると、該格子は、四端子
回路にて等価的に表わすことができる。この一例
を第３図に示す。 In FIG. 2A, if the characteristic impedance of the medium in which the grating exists is Zo, the grating can be equivalently represented by a four-terminal circuit. An example of this is shown in FIG.
第３図において、リアクタンスXa，Xbは、格
子間隔ａ、入射電界波長λ、金属線条の線径ｄ、
電界入射角θおよび媒質の比誘電率ε〓の関数とし
て、第３，４式のように求まる。これらの式は、
M.I.T.Radiation Laboratory Series vol10
“Waveguide hand book”Ｐ 286
McGRAW−HILL BOOK COMPANY，
INC，1951
に記載されており、公知である。 In Fig. 3, the reactances Xa and Xb are the grating spacing a, the incident electric field wavelength λ, the wire diameter d of the metal wire,
It is found as a function of the electric field incident angle θ and the relative dielectric constant ε of the medium as shown in Equations 3 and 4. These formulas are from MITRadiation Laboratory Series vol10 “Waveguide hand book” P 286 McGRAW−HILL BOOK COMPANY,
INC., 1951, and is publicly known.
ただし、λε＝λ・ε〓-1/2 ここで、上記第３式のＭは、 Ｍ＝｛m2＋2ma／λεsinθ− （ａ cosθ／λε）2｝-1/2−｜ｍ｜-1 である。 However, λε=λ・ε〓 -1/2 Here, M in the third equation above is, M={m 2 +2ma/λεsinθ− (a cosθ/λε) 2 } -1/2 −|m| -1 It is.
いま、Xa，Xbの正規化インピーダンスを各々
Ｚａ＝Za／Zo，ｂ＝Zb／Zoとすると、透過電力比Pt
は、第５式で与えられる。 Now, if the normalized impedances of Xa and Xb are respectively Za=Za/Zo and b=Zb/Zo, the transmitted power ratio Pt is given by the fifth equation.
上記第５式を用い、空気中において、金属線条
方向に電界成分Ｅを有する電磁波が、上記格子面
の法線方向から入射した場合の透過電力比Ptと
log10（ａ／λ）の関係を、ｄ／ａをパラメータとして
表
わすと、第４図に示す関係が得られる。 Using Equation 5 above, the transmitted power ratio Pt when an electromagnetic wave having an electric field component E in the direction of the metal wires is incident from the normal direction of the lattice plane in the air is
When the relationship of log 10 (a/λ) is expressed using d/a as a parameter, the relationship shown in FIG. 4 is obtained.
同図において、例えば、log10（ａ／λ）＝−２，
ｄ／ａ＝0.2とすると、Ptは、約−40dBの減衰を示
すことがわかる。これは、格子間隔ａ＝1.0mm、
金属線条の直径ｄ＝0.2mmである格子に、該格子
に平行な偏波成分のみを持つ周波数3GHzの電界
が、垂直入射した場合に表われる透過量である。 In the figure, it can be seen that, for example, if log 10 (a/λ)=-2 and d/a=0.2, Pt exhibits an attenuation of about -40 dB. This means that the grid spacing a=1.0mm,
This is the amount of transmission that appears when an electric field with a frequency of 3 GHz, which has only polarization components parallel to the grating, is perpendicularly incident on a grating having a diameter d = 0.2 mm of metal wires.
この第４図から、透過電力比が−40dB以下と
なる領域を求め、横軸にｄ／ａ、縦軸にlog10（ｄ／λ
）
をとつてそれを表わすと、第５図に示す斜線部分
となる。同図中の直線は、境界の最小２乗近似曲
線であり、第６式で表わされる。 From this Figure 4, find the region where the transmitted power ratio is -40 dB or less, and plot d/a on the horizontal axis and log 10 (d/λ
) is expressed as the shaded area shown in Figure 5. The straight line in the figure is a least squares approximation curve of the boundary, and is expressed by Equation 6.
log10ａ／λ＝6.19ｄ／ａ−3.06 ……(6)
従つて、本実施例では、織布の経および緯に、
遮蔽の対象となる電磁波の波長λに対して、各々
第１式および第２式を満足する線径および間隔に
て金属線条を織込んでいるため、任意の方向に偏
りを持つ電界に対し、上述したと同様の作用によ
る電磁波遮蔽特性を持たせることができる。 log 10 a/λ=6.19d/a-3.06...(6) Therefore, in this example, the warp and weft of the woven fabric are
Since the metal wires are incorporated with a wire diameter and spacing that satisfy the first and second equations for the wavelength λ of the electromagnetic waves to be shielded, they are effective against electric fields that are biased in any direction. , it is possible to provide electromagnetic wave shielding characteristics due to the same effect as described above.
ところで、上記した条件を満足して、所望の電
磁波周波数に対する所望の遮蔽性能を与える電磁
波遮蔽織布を、最も軽量になるように設計するに
は、金属線条の間隔が広くすればよい。例えば、
0.14mmφの銅線を用い、1GHzの周波数の電磁波
に対し、40dBの遮蔽性能を与える場合（1GHz以
下の周波数の電磁波に対し、40dB以上の遮蔽性
能となる。）、第４図の関係より、ａは、
log10＝ａ／π＝2.3
から、ａ≒1.5となる。すなわち、金属線条の間
隔は、1.5mmである。 By the way, in order to design an electromagnetic wave shielding fabric that satisfies the above conditions and provides the desired shielding performance against the desired electromagnetic wave frequency to be the lightest, the spacing between the metal filaments should be widened. for example,
When using 0.14mmφ copper wire and providing shielding performance of 40dB against electromagnetic waves with a frequency of 1GHz (shielding performance of 40dB or more against electromagnetic waves with a frequency of 1GHz or less), from the relationship shown in Figure 4, Since log 10 =a/π=2.3, a becomes a≈1.5. That is, the interval between the metal wires is 1.5 mm.
ここで、このような0.14mmφの銅線を用いて、
網目間隔1.5の金網を、前述した従来技術のよう
に製作することを考える。 Here, using such a 0.14mmφ copper wire,
Consider manufacturing a wire mesh with a mesh spacing of 1.5 as in the prior art described above.
この場合、金網は製作できたとしても、金属線
条は、互いの摩擦抵抗が小さいので、容易に変位
しやすく、金属線条の位置ずれによる目崩れを起
こさないようにすることは、容易ではない。 In this case, even if a wire mesh could be manufactured, the metal wires have little frictional resistance with each other, so they are easily displaced, and it is difficult to prevent the mesh from collapsing due to misalignment of the metal wires. do not have.
これに対して、本考案の遮蔽織布の場合は、一
般の非金属繊維からなる織布の経および緯の両者
に、前記の条件で金属線条を配置することにな
る。この場合には、金属線条の間に、経、緯に織
り込まれる一般の非金属繊維が大きな摩擦抵抗を
持つため、これによつて、金属線条のずれが阻止
される。 On the other hand, in the case of the shielding fabric of the present invention, metal filaments are arranged under the above conditions in both the warp and weft of the fabric made of general non-metallic fibers. In this case, the general non-metallic fibers woven in the warp and weft between the metal filaments have a large frictional resistance, thereby preventing the metal filaments from shifting.
＜本考案の応用例＞
上述した遮蔽効果を有する本考案の電磁波遮蔽
用織布は、可撓性を有するので、任意の形状の空
間を覆うことが可能である。これによつて、閉空
間を構成すれば、その部分は、電磁シールド空間
となる。<Application Example of the Present Invention> Since the electromagnetic wave shielding fabric of the present invention having the above-mentioned shielding effect has flexibility, it is possible to cover a space of any shape. If a closed space is formed by this, that part becomes an electromagnetic shield space.
［考案の効果］
以上説明したように本考案は、金属線条を布地内
に所定間隔にて配置して織込むことができて、軽
量で、製造が容易で、かつ、金属部分の剥離を生
ずることがなく、所望の電磁波遮蔽特性を得るこ
とができる効果がある。[Effects of the invention] As explained above, the present invention allows metal filaments to be woven into fabric by arranging them at predetermined intervals, is lightweight, easy to manufacture, and does not cause peeling of metal parts. There is an effect that desired electromagnetic wave shielding characteristics can be obtained without causing any problems.
第１図は本考案に係る電磁波遮蔽用織布の一実
施例の部分拡大図、第２Ａ図は上記実施例の作用
を説明するために理論モデルを示す正面図、第２
Ｂ図はその断面図、第３図は上記実施例の理論モ
デルによる格子の等価回路を示す回路図、第４図
は上記理論モデルの格子面に、電界Ｅが垂直入射
した場合の透過電力比を、log10（ａ／λ）の関数と
して表わしたグラフ、第５図は上記第４図から透
過電力比が−40dB以下となる領域を求め、横軸
はｄ／ａ、縦軸にlog10（ａ／λ）をとつてそれを表わ
し
たグラフである。
１，３……経糸、２，４……緯糸。
FIG. 1 is a partially enlarged view of one embodiment of the electromagnetic shielding fabric according to the present invention, FIG. 2A is a front view showing a theoretical model for explaining the operation of the above embodiment, and FIG.
Figure B is its cross-sectional view, Figure 3 is a circuit diagram showing the equivalent circuit of the lattice according to the theoretical model of the above example, and Figure 4 is the transmitted power ratio when the electric field E is perpendicularly incident on the lattice plane of the above theoretical model. Fig. 5 is a graph showing d/a as a function of log 10 (a/λ), and the region where the transmitted power ratio is -40 dB or less is determined from Fig. 4 above, the horizontal axis is d/a, and the vertical axis is log 10 This is a graph expressed by taking (a/λ). 1, 3... warp, 2, 4... weft.
Claims (1)
両者に、適当な間隔で金属製の線条を配して構成
される電磁波遮蔽用織布において、 上記金属製の線条の間隔ａおよび線径ｄを、対
象電磁波の波長λに対し、不等式 log10ａ／λ≦6.19ｄ／ａ−3.06 および 0.05≦ｄ／ａ≦0.32 を満足するよう設定して構成されることを特徴と
する電磁波遮蔽用織布。[Claims for Utility Model Registration] An electromagnetic wave shielding woven fabric consisting of a woven fabric made of general non-metallic fibers with metal stripes arranged at appropriate intervals in both the warp and weft, The spacing a and the wire diameter d of the manufactured filaments are set to satisfy the inequality log 10 a/λ≦6.19d/a−3.06 and 0.05≦d/a≦0.32 with respect to the wavelength λ of the target electromagnetic wave. A woven fabric for shielding electromagnetic waves characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985017503U JPH027519Y2 (en) | 1985-02-09 | 1985-02-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985017503U JPH027519Y2 (en) | 1985-02-09 | 1985-02-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61146996U JPS61146996U (en) | 1986-09-10 |
| JPH027519Y2 true JPH027519Y2 (en) | 1990-02-22 |
Family
ID=30505267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985017503U Expired JPH027519Y2 (en) | 1985-02-09 | 1985-02-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH027519Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2588667B2 (en) * | 1992-06-29 | 1997-03-05 | 株式会社宇宙通信基礎技術研究所 | Method for producing metal fiber knitted fabric for parabolic antenna |
| JP3519290B2 (en) * | 1998-11-05 | 2004-04-12 | カネボウ株式会社 | Electromagnetic shielding fabric |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4418565Y1 (en) * | 1965-11-24 | 1969-08-11 | ||
| JPS58173899A (en) * | 1982-04-07 | 1983-10-12 | ユニチカ株式会社 | Power and magnetic line force shielding material |
-
1985
- 1985-02-09 JP JP1985017503U patent/JPH027519Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4418565Y1 (en) * | 1965-11-24 | 1969-08-11 | ||
| JPS58173899A (en) * | 1982-04-07 | 1983-10-12 | ユニチカ株式会社 | Power and magnetic line force shielding material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61146996U (en) | 1986-09-10 |
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