JP2002358842A - External conductor layer structure of very fine coaxial cable, and very fine coaxial cable - Google Patents
External conductor layer structure of very fine coaxial cable, and very fine coaxial cableInfo
- Publication number
- JP2002358842A JP2002358842A JP2001165197A JP2001165197A JP2002358842A JP 2002358842 A JP2002358842 A JP 2002358842A JP 2001165197 A JP2001165197 A JP 2001165197A JP 2001165197 A JP2001165197 A JP 2001165197A JP 2002358842 A JP2002358842 A JP 2002358842A
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- Japan
- Prior art keywords
- coaxial cable
- conductor
- conductor layer
- micro coaxial
- wire
- 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.)
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Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、極細同軸ケーブル
の外部導体層構造及び極細同軸ケーブルに係り、特に、
内部導体の導体径が0.0799mm以下又は導体断面
積が0.005012mm2以下の極細同軸ケーブルの
外部導体層構造及び極細同軸ケーブルに関するものであ
る。The present invention relates to an outer conductor layer structure of a micro coaxial cable and a micro coaxial cable.
The present invention relates to an outer conductor layer structure of a micro coaxial cable having a conductor diameter of 0.0799 mm or less or a conductor cross-sectional area of 0.005012 mm 2 or less, and a micro coaxial cable.
【0002】[0002]
【従来の技術】極細同軸ケーブルとして、図3に示すよ
うに、内部導体11の外周に順に絶縁層12、外部導体
層33、シース層14を設けた極細同軸ケーブル30が
挙げられる。このケーブル30においては、絶縁層12
の外周に複数本の素線36を横巻きすることで、外部導
体層33を形成している。2. Description of the Related Art As a micro coaxial cable, as shown in FIG. 3, there is a micro coaxial cable 30 in which an insulating layer 12, an outer conductor layer 33 and a sheath layer 14 are sequentially provided on the outer periphery of an inner conductor 11. In this cable 30, the insulating layer 12
The outer conductor layer 33 is formed by horizontally winding a plurality of element wires 36 around the outer periphery of the outer conductor layer 33.
【0003】外部導体層33の素線36は、シールド特
性を満足するように導電性だけを考慮していること、即
ち導電率が高い線材で構成することが一般的である。[0003] In general, the strand 36 of the outer conductor layer 33 takes into account only the conductivity so as to satisfy the shielding characteristics, that is, is composed of a wire having a high conductivity.
【0004】近年、極細同軸ケーブルにおいては更なる
細径化が要求されており、これに伴って導体の更なるダ
ウンサイジングが図られている。導体径又は導体断面積
が小さい、例えば、内部導体の導体径が0.0799m
m以下又は導体断面積が0.005012mm2以下
(A.W.G.(American Wire Gauge)のゲージ値が
40以上)の極細同軸ケーブルの場合、内部導体の強度
だけでは屈曲特性を十分に満足することが困難となる。
このため、このケーブルにおける外部導体層の素線とし
ては、一定の導電率を有し、かつ、屈曲特性の向上を図
るべく素線36よりも高強度を有する素線が使用されて
いる。In recent years, there has been a demand for a finer coaxial cable to be further reduced in diameter, and accordingly, further downsizing of conductors has been attempted. Conductor diameter or conductor cross-sectional area is small, for example, the conductor diameter of the inner conductor is 0.0799 m
m or a conductor cross-sectional area of 0.005012 mm 2 or less (AWG (American Wire Gauge) gauge value of 40 or more), the bending characteristics are sufficiently satisfied only by the strength of the inner conductor. It will be difficult to do.
For this reason, as the strand of the outer conductor layer in this cable, an strand having a constant conductivity and a higher strength than the strand 36 is used in order to improve the bending characteristics.
【0005】[0005]
【発明が解決しようとする課題】ところが、導体は、一
般的に、高導電性を得ようとすると強度は低下し、ま
た、高強度を得ようとすると導電性が低下するものであ
るため、高導電性と高強度の相反する特性を両立するこ
とは困難である。However, since the strength of a conductor generally decreases when high conductivity is to be obtained, and the conductivity is low when high strength is to be obtained. It is difficult to achieve both high conductivity and high strength contradictory characteristics.
【0006】よって、内部導体の導体径が0.0799
mm以下又は導体断面積が0.005012mm2以下
の極細同軸ケーブルにおいては、外部導体層の素線とし
て高強度の素線を用いることで、極細同軸ケーブルの屈
曲特性を維持しているが、シールド特性は十分とはいえ
なかった。Therefore, the conductor diameter of the inner conductor is 0.0799.
In a micro coaxial cable with a conductor cross section of 0.005012 mm 2 or less, the bending characteristics of the micro coaxial cable are maintained by using a high-strength wire as a wire of the outer conductor layer. The properties were not satisfactory.
【0007】以上の事情を考慮して創案された本発明の
目的は、屈曲特性及びシールド特性が良好な極細同軸ケ
ーブルの外部導体層構造及び極細同軸ケーブルを提供す
ることにある。An object of the present invention, which has been made in view of the above circumstances, is to provide an outer conductor layer structure of a micro coaxial cable and a micro coaxial cable having good bending characteristics and shielding characteristics.
【0008】[0008]
【課題を解決するための手段】上記目的を達成すべく本
発明に係る極細同軸ケーブルの外部導体層構造は、導体
径が0.0799mm以下又は導体断面積が0.005
012mm2以下の内部導体を含んだ線材の外周に、導
電率及び引張強度がそれぞれ異なる2種類以上の素線
を、それぞれ線材の周方向に亘って均等に配置してなる
ものである。In order to achieve the above object, the outer conductor layer structure of the micro coaxial cable according to the present invention has a conductor diameter of 0.0799 mm or less or a conductor sectional area of 0.005 mm or less.
Two or more types of element wires having different conductivity and tensile strength are uniformly arranged on the outer periphery of a wire including an inner conductor of 012 mm 2 or less over the circumferential direction of the wire.
【0009】一方、本発明に係る極細同軸ケーブルは、
導体径が0.0799mm以下又は導体断面積が0.0
05012mm2以下の内部導体を含んだ線材の外周
に、上述した外部導体層構造を設けてなる導体の外周
に、シース層を設けたものである。On the other hand, the micro coaxial cable according to the present invention
Conductor diameter is 0.0799mm or less or conductor cross section is 0.0
A sheath layer is provided on the outer circumference of a conductor obtained by providing the above-described outer conductor layer structure on the outer circumference of a wire including an inner conductor of 05012 mm 2 or less.
【0010】極細同軸ケーブルの外部導体層構造を以上
のような構成とすることで、屈曲特性及びシールド特性
を高いレベルで達成可能な極細同軸ケーブルが得られ
る。By making the outer conductor layer structure of the micro coaxial cable as described above, it is possible to obtain a micro coaxial cable capable of achieving a high level of bending characteristics and shielding characteristics.
【0011】[0011]
【発明の実施の形態】以下、本発明の好適一実施の形態
を添付図面に基いて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.
【0012】本発明に係る極細同軸ケーブルの断面図を
図1に示す。尚、図3と同様の部材には同じ符号を付し
ている。FIG. 1 is a sectional view of a micro coaxial cable according to the present invention. The same members as those in FIG. 3 are denoted by the same reference numerals.
【0013】図1に示すように、本発明に係る極細同軸
ケーブルの外部導体層13の構造は、7本撚りした撚線
導体の断面積が0.005012mm2以下の内部導体
11の外周に絶縁層12を設けてなる絶縁線心(線材)
20の外周に、導電率及び引張強度がそれぞれ異なる2
種類以上の素線(図1中では2種類の素線17,18)
を、それぞれ絶縁線心20の周方向に亘って均等に、具
体的には交互に配置してなるものである。As shown in FIG. 1, the structure of the outer conductor layer 13 of the micro coaxial cable according to the present invention is such that a seven-stranded stranded conductor is insulated around the inner conductor 11 having a cross-sectional area of 0.005012 mm 2 or less. Insulated wire core (wire material) provided with layer 12
20 having different conductivity and tensile strength on the outer circumference of
More than types of wires (two types of wires 17 and 18 in FIG. 1)
Are arranged uniformly, specifically, alternately in the circumferential direction of the insulated wire core 20.
【0014】素線17,18の内、一方の素線17(又
は18)は高強度の素線であり、他方の素線18(又は
17)は高導電性の素線である。具体的には、素線17
(又は18)は、引張強度が1000〜1200MP
a、導電率が40〜60%IACS、好ましくは引張強
度が1100MPa前後、導電率が50%IACS前後
であり、例えばCu−Ag系合金などが挙げられる。ま
た、素線18(又は17)は、引張強度が600〜80
0MPa、導電率が80〜95%IACS、好ましくは
引張強度が700MPa前後、導電率が90%IACS
前後であり、例えばCu−Sn系合金などが挙げられ
る。Of the strands 17, 18, one strand 17 (or 18) is a high-strength strand, and the other strand 18 (or 17) is a highly conductive strand. Specifically, the strand 17
(Or 18) has a tensile strength of 1000 to 1200MP
a, the conductivity is 40 to 60% IACS, preferably the tensile strength is around 1100 MPa, and the conductivity is around 50% IACS, and examples thereof include a Cu-Ag alloy. The strand 18 (or 17) has a tensile strength of 600 to 80.
0 MPa, conductivity 80-95% IACS, preferably tensile strength around 700 MPa, conductivity 90% IACS
Before and after, for example, a Cu-Sn-based alloy or the like can be mentioned.
【0015】図1における外部導体層13の構造は、絶
縁線心20の外周に、素線17,18をそれぞれ絶縁線
心20の周方向に亘って交互に配置したものであるが、
必ずしも交互に配置する必要はない。例えば、図1に示
した構造のシールド特性よりも更なるシールド特性の向
上を図る場合、高強度の素線の数は、ある一定レベルの
屈曲特性を達成するのに必要な本数だけとし、残りの素
線は全て高導電性の素線とすることで達成可能である
が、この場合、各素線の本数が異なるため、各素線を交
互に配置することはできない。そこで、数が少ない方の
素線(この場合、高強度の素線)が周方向に亘って均等
に配置されるように、高強度の素線を、数本おきに配置
する。これによって、外部導体層13の周方向における
強度及び導電率のばらつきが無くなる。The structure of the outer conductor layer 13 shown in FIG. 1 is such that the wires 17 and 18 are alternately arranged on the outer periphery of the insulated wire 20 in the circumferential direction of the insulated wire 20.
It is not always necessary to arrange them alternately. For example, in order to further improve the shield characteristics from the shield characteristics of the structure shown in FIG. 1, the number of high-strength strands is limited to the number required to achieve a certain level of bending characteristics. Can be achieved by using high-conductivity strands, but in this case, the number of the strands is different, so that the strands cannot be alternately arranged. Therefore, every few high-strength strands are arranged so that the fewer strands (in this case, high-strength strands) are evenly arranged in the circumferential direction. This eliminates variations in the strength and conductivity of the outer conductor layer 13 in the circumferential direction.
【0016】また、図1においては、2種類の素線1
7,18を用いた場合について説明を行ったが、素線の
種類は2種類に限定するものでないことは言うまでもな
く、要求される屈曲特性及びシールド特性に応じて、適
宜3種類以上の素線を用いても良い。この場合において
も、各素線の本数が全て同じ場合は、絶縁線心20の外
周に各素線をそれぞれ周方向に亘って交互に配置可能で
あるが、各素線の本数にばらつきがある場合は、外部導
体層13の周方向における強度及び導電率のばらつきが
無くなるよう、数が少ない素線を数本おきに配置するこ
とが好ましい。In FIG. 1, two types of wires 1 are shown.
The case of using the wires 7 and 18 has been described. However, it is needless to say that the types of the wires are not limited to the two types, and three or more types of the wires may be appropriately used according to the required bending characteristics and shielding characteristics. May be used. Also in this case, when the number of the individual wires is the same, the individual wires can be alternately arranged on the outer periphery of the insulated wire core 20 in the circumferential direction, but the number of the individual wires varies. In this case, it is preferable to arrange a small number of strands every few wires so that variations in the strength and conductivity of the outer conductor layer 13 in the circumferential direction are eliminated.
【0017】次に、本発明に係る極細同軸ケーブル10
は、7本撚りした撚線導体の断面積が0.005012
mm2以下の内部導体11の外周に絶縁層12を設けて
絶縁線心20を形成し、その絶縁線心20の外周に、導
電率及び引張強度がそれぞれ異なる2種類の素線17,
18を、それぞれ絶縁線心20の周方向に亘って交互
に、かつ、絶縁線心20の外周に横巻きに巻き付けて外
部導体層13を形成し、その絶縁線心20に外部導体層
13を設けてなる導体21の外周にプラスチックテープ
を巻回してなるシース層14を設けたものである。ま
た、シース層14の外周にジャケット層(図示せず)を
設けてもよい。Next, the micro coaxial cable 10 according to the present invention will be described.
Means that the cross-sectional area of a seven-stranded stranded conductor is 0.005012
An insulating layer 12 is formed on the outer periphery of the inner conductor 11 having a diameter of 2 mm or less to form an insulated wire core 20.
18 are alternately wound around the circumference of the insulated wire core 20 in a horizontal winding around the outer circumference of the insulated wire core 20 to form the outer conductor layer 13. A sheath layer 14 formed by winding a plastic tape around the outer periphery of the provided conductor 21 is provided. Further, a jacket layer (not shown) may be provided on the outer periphery of the sheath layer 14.
【0018】内部導体11は、図1に示したように複数
本(図1中では7本)の素線20を撚り合わせてなるも
の、又は一本の素線からなるもののいずれであってもよ
い。内部導体11が撚線からなる場合は断面積が適用さ
れ、内部導体11が単線からなる場合は径が適用され
る。The inner conductor 11 may be formed by twisting a plurality of (seven in FIG. 1) wires 20 as shown in FIG. 1, or by a single wire. Good. When the inner conductor 11 is formed of a stranded wire, the cross-sectional area is applied, and when the inner conductor 11 is formed of a single wire, the diameter is applied.
【0019】絶縁層12は、樹脂の押出し被覆などによ
って設けられる。絶縁層12を構成する樹脂材として
は、PFA(テフロン(登録商標))樹脂、ポリエチレ
ン、ポリプロピレン、ETFE(エチレン四ふっ化エチ
レン共重合体)樹脂、FEP(ふっ化エチレンプロピレ
ン)樹脂などが挙げられる。The insulating layer 12 is provided by extrusion coating of a resin or the like. Examples of the resin material forming the insulating layer 12 include PFA (Teflon (registered trademark)) resin, polyethylene, polypropylene, ETFE (ethylene tetrafluoroethylene copolymer) resin, and FEP (ethylene fluoride propylene) resin. .
【0020】外部導体層13は、絶縁線心20の外周
に、金属導体の素線17,18をそれぞれ複数本(図1
中ではそれぞれ16本)横巻きに巻き付けることによっ
て設けられる。ここで、横巻きとは、複数本の素線1
7,18を同時、かつ、螺旋状に巻き付けることを示し
ている。The outer conductor layer 13 includes a plurality of metal conductor strands 17 and 18 on the outer periphery of the insulated wire core 20 (FIG. 1).
(16 in each) are provided by being wound in a horizontal winding. Here, the horizontal winding means a plurality of wires 1
7 and 18 are simultaneously and spirally wound.
【0021】シース層14を構成するプラスチックテー
プの材質としては、例えば、ポリエステル、ポリフェニ
レンサルファイドなどが挙げられる。Examples of the material of the plastic tape forming the sheath layer 14 include polyester and polyphenylene sulfide.
【0022】ジャケット層は、プラスチックテープを巻
回したり、溶融プラスチックを押出し被覆することなど
によって設けられる。また、ジャケット層を構成するプ
ラスチック材としては、例えば、ポリエステル、ポリフ
ェニレンサルファイド、PFA樹脂、ポリエチレン、ポ
リプロピレン、ETFE樹脂、FEP樹脂などが挙げら
れる。The jacket layer is provided by winding a plastic tape or extruding and coating a molten plastic. Examples of the plastic material forming the jacket layer include polyester, polyphenylene sulfide, PFA resin, polyethylene, polypropylene, ETFE resin, and FEP resin.
【0023】本発明に係る極細同軸ケーブル10によれ
ば、外部導体層13の構造を上述した構造とすること
で、ケーブルの細径化に伴う導体のダウンサイジングを
行っても、従来の極細同軸ケーブルと比較して、略同じ
屈曲特性を保持したままシールド特性の向上を図ること
ができる。According to the micro coaxial cable 10 according to the present invention, the outer conductor layer 13 has the above-described structure, so that the conventional micro coaxial cable can be used even if the conductor is downsized due to the reduction in the diameter of the cable. As compared with a cable, the shield characteristics can be improved while maintaining substantially the same bending characteristics.
【0024】また、本発明によれば、内部導体の径が
0.0799mm以下又は導体の断面積が0.0050
12mm2以下の極細同軸ケーブルであっても、良好な
耐屈曲性及びシールド特性を有する極細同軸ケーブル1
0が得られる。このため、このケーブル10は、医療機
器や電子機器、特に超音波診断装置、内視鏡装置、及び
液晶表示ディスプレー等のケーブルのように、屈曲特性
とシールド特性の両方が高いレベルで要求されるケーブ
ル用に適している。According to the present invention, the diameter of the inner conductor is 0.0799 mm or less or the cross-sectional area of the conductor is 0.0050 mm or less.
Micro coaxial cable 1 having good bending resistance and shielding characteristics even for micro coaxial cable of 12 mm 2 or less
0 is obtained. For this reason, this cable 10 is required to have both high bending characteristics and high shielding characteristics, such as cables for medical equipment and electronic equipment, particularly for ultrasonic diagnostic equipment, endoscope equipment, and liquid crystal display displays. Suitable for cables.
【0025】[0025]
【実施例】<試験1> (実施例)42AWG(断面積0.003151m
m2)のSnメッキ銅合金線からなる内部導体の外周に
PFA樹脂を押出被覆して絶縁層を形成し、外径が0.
2mmの絶縁線心を得る。次に、この絶縁線心の外周
に、素線径が0.025mm、引張強度1100MP
a、導電率50%IACSのCu−Ag合金線および素
線径が0.025mm、引張強度700MPa、導電率
90%IACSのCu−Sn合金線を、それぞれ絶縁線
心の周方向に亘って交互に、かつ、絶縁線心の外周に横
巻きに巻き付けて外部導体層を形成し、外径が0.25
mmの線心を得る。次に、この線心の外周に、プラスチ
ックテープを巻回してシース層を形成し、極細同軸ケー
ブルを作製する(本発明材)。Example <Test 1> (Example) 42 AWG (0.003151 m cross-sectional area)
m 2 ) An outer layer of an inner conductor made of a Sn-plated copper alloy wire is extrusion-coated with a PFA resin to form an insulating layer.
Obtain a 2 mm insulated core. Next, a wire diameter of 0.025 mm and a tensile strength of 1100MP were formed on the outer periphery of the insulated wire core.
a, a Cu-Ag alloy wire having a conductivity of 50% IACS and a Cu-Sn alloy wire having a wire diameter of 0.025 mm, a tensile strength of 700 MPa, and a conductivity of 90% IACS are alternately arranged in the circumferential direction of the insulated wire core. And an outer conductor layer formed by being wound horizontally around the outer periphery of the insulated wire core and having an outer diameter of 0.25
mm mm of core is obtained. Next, a plastic tape is wound around the outer periphery of the wire core to form a sheath layer, and a micro coaxial cable is manufactured (material of the present invention).
【0026】(比較例1)絶縁線心の外周に、素線径が
0.025mm、引張強度900MPa、導電率70%
IACSのCu−Sn合金線を横巻きに巻き付けて外部
導体層を形成する以外は、実施例1と同様にして極細同
軸ケーブルを作製する(従来材)。Comparative Example 1 A wire diameter of 0.025 mm, a tensile strength of 900 MPa, and a conductivity of 70% were formed on the outer periphery of an insulated wire core.
A micro coaxial cable is manufactured in the same manner as in Example 1 except that an IACS Cu-Sn alloy wire is wound horizontally to form an external conductor layer (conventional material).
【0027】実施例1及び比較例1の極細同軸ケーブル
に対してシールド特性の評価試験を行った。シールド特
性の評価は、周波数領域30MHz〜1GHzにおける
シールド効果(dB)について行った。その評価結果を
図2に示す。The micro coaxial cables of Example 1 and Comparative Example 1 were subjected to an evaluation test of the shield characteristics. The evaluation of the shielding characteristics was performed on the shielding effect (dB) in the frequency range of 30 MHz to 1 GHz. FIG. 2 shows the evaluation results.
【0028】図2に示すように、本発明材である実施例
1の極細同軸ケーブルのシールド効果は、比較例1のケ
ーブルとそれ比較して、全周波数領域で平均して10%
弱向上していることが確認できた。As shown in FIG. 2, the shielding effect of the microfine coaxial cable of Example 1, which is the material of the present invention, is 10% on average in the entire frequency range as compared with the cable of Comparative Example 1.
It was confirmed that it was slightly improved.
【0029】以上、本発明の実施の形態は、上述した実
施の形態に限定されるものではなく、他にも種々のもの
が想定されることは言うまでもない。As described above, the embodiment of the present invention is not limited to the above-described embodiment, and it goes without saying that various other embodiments can be envisaged.
【0030】[0030]
【発明の効果】以上要するに本発明によれば、極細同軸
ケーブルの外部導体層の構造を、極細径又は極小断面積
の内部導体を含んだ線材の外周に、導電率及び引張強度
がそれぞれ異なる2種類以上の素線を、それぞれ線材の
周方向に亘って均等に配置してなるものとすることで、
屈曲特性及びシールド特性を高いレベルで達成可能な極
細同軸ケーブルが得られるという優れた効果を発揮す
る。In summary, according to the present invention, the structure of the outer conductor layer of the micro coaxial cable is different from that of the outer conductor of the wire including the inner conductor having a very small diameter or a very small cross section, in that the conductivity and the tensile strength are different. By making more than kinds of strands evenly arranged in the circumferential direction of each wire,
An excellent effect that an ultrafine coaxial cable capable of achieving a bending characteristic and a shielding characteristic at a high level can be obtained.
【図1】本発明に係る極細同軸ケーブルの断面図であ
る。FIG. 1 is a sectional view of a micro coaxial cable according to the present invention.
【図2】実施例1及び比較例1の極細同軸ケーブルのシ
ールド特性を示す図である。FIG. 2 is a diagram illustrating shield characteristics of the micro coaxial cables of Example 1 and Comparative Example 1.
【図3】従来の極細同軸ケーブルの断面図である。FIG. 3 is a cross-sectional view of a conventional micro coaxial cable.
10 極細同軸ケーブル 11 内部導体(導体) 13 外部導体層 14 シース層 17,18 素線 20 絶縁線心(線材) 21 導体 DESCRIPTION OF SYMBOLS 10 Micro coaxial cable 11 Inner conductor (conductor) 13 Outer conductor layer 14 Sheath layer 17, 18 Elementary wire 20 Insulated wire core (Wire material) 21 Conductor
フロントページの続き (72)発明者 山本 勇揮 茨城県日立市日高町5丁目1番1号 日立 電線株式会社日高工場内 (72)発明者 松井 量 茨城県日立市日高町5丁目1番1号 日立 電線株式会社総合技術研究所内 Fターム(参考) 5G313 AB02 AB05 AC03 AD07 AE08 5G319 FA04 FA08 FC19 Continued on the front page (72) Inventor Yuki Yamamoto 5-1-1 Hidakacho, Hitachi City, Ibaraki Prefecture Hitachi Cable Co., Ltd. Hidaka Factory (72) Inventor Akira Matsui 5-1-1 Hidakacho, Hitachi City, Ibaraki Prefecture No. 1 F-term in Hitachi Cable, Ltd. General Research Laboratory 5G313 AB02 AB05 AC03 AD07 AE08 5G319 FA04 FA08 FC19
Claims (3)
断面積が0.005012mm2以下の内部導体を含ん
だ線材の外周に、外部導体層を有する極細同軸ケーブル
の外部導体層構造において、上記線材の外周に、導電率
及び引張強度がそれぞれ異なる2種類以上の素線を、そ
れぞれ線材の周方向に亘って均等に配置してなることを
特徴とする極細同軸ケーブルの外部導体層構造。1. The outer conductor layer structure of a micro coaxial cable having an outer conductor layer on the outer periphery of a wire including an inner conductor having a conductor diameter of 0.0799 mm or less or a conductor cross-sectional area of 0.005012 mm 2 or less. An outer conductor layer structure of a micro coaxial cable, characterized in that two or more types of strands having different electrical conductivity and tensile strength are uniformly arranged on the outer periphery of the wire in the circumferential direction of the wire.
て交互に、かつ、線材の外周に横巻きに配置した請求項
1記載の極細同軸ケーブルの外部導体層構造。2. The outer conductor layer structure of a micro coaxial cable according to claim 1, wherein the individual wires are arranged alternately in the circumferential direction of the wire and in a horizontal winding around the outer circumference of the wire.
有する導体の外周に、シース層を設けたことを特徴とす
る極細同軸ケーブル。3. A micro coaxial cable comprising a conductor having the outer conductor layer structure according to claim 1 and a sheath layer provided on an outer periphery of the conductor.
Priority Applications (1)
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JP2001165197A JP2002358842A (en) | 2001-05-31 | 2001-05-31 | External conductor layer structure of very fine coaxial cable, and very fine coaxial cable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001165197A JP2002358842A (en) | 2001-05-31 | 2001-05-31 | External conductor layer structure of very fine coaxial cable, and very fine coaxial cable |
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JP2002358842A true JP2002358842A (en) | 2002-12-13 |
Family
ID=19007901
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JP2001165197A Pending JP2002358842A (en) | 2001-05-31 | 2001-05-31 | External conductor layer structure of very fine coaxial cable, and very fine coaxial cable |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006025581A1 (en) * | 2004-09-03 | 2006-03-09 | Daikin Industries, Ltd. | Cable jacket material and cable jacket |
JP2008053073A (en) * | 2006-08-25 | 2008-03-06 | Fujikura Ltd | Insulation-coated extra fine wire and extra fine coaxial cable |
JP2012234763A (en) * | 2011-05-09 | 2012-11-29 | Sumitomo Electric Ind Ltd | Small-diameter cable |
JP2018129278A (en) * | 2017-02-10 | 2018-08-16 | 株式会社潤工社 | coaxial cable |
-
2001
- 2001-05-31 JP JP2001165197A patent/JP2002358842A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006025581A1 (en) * | 2004-09-03 | 2006-03-09 | Daikin Industries, Ltd. | Cable jacket material and cable jacket |
JP2008053073A (en) * | 2006-08-25 | 2008-03-06 | Fujikura Ltd | Insulation-coated extra fine wire and extra fine coaxial cable |
JP2012234763A (en) * | 2011-05-09 | 2012-11-29 | Sumitomo Electric Ind Ltd | Small-diameter cable |
JP2018129278A (en) * | 2017-02-10 | 2018-08-16 | 株式会社潤工社 | coaxial cable |
WO2018147293A1 (en) * | 2017-02-10 | 2018-08-16 | 株式会社 潤工社 | Coaxial cable |
CN110268483A (en) * | 2017-02-10 | 2019-09-20 | 株式会社润工社 | Coaxial cable |
US10825583B2 (en) | 2017-02-10 | 2020-11-03 | Junkosha Inc. | Coaxial cable |
EP3582236A4 (en) * | 2017-02-10 | 2020-11-18 | Junkosha Inc. | Coaxial cable |
CN110268483B (en) * | 2017-02-10 | 2021-03-30 | 株式会社润工社 | Coaxial cable |
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