JP2019061775A - Coaxial wire and multicore cable - Google Patents

Coaxial wire and multicore cable Download PDF

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JP2019061775A
JP2019061775A JP2017183473A JP2017183473A JP2019061775A JP 2019061775 A JP2019061775 A JP 2019061775A JP 2017183473 A JP2017183473 A JP 2017183473A JP 2017183473 A JP2017183473 A JP 2017183473A JP 2019061775 A JP2019061775 A JP 2019061775A
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coaxial
wire
cable
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JP6939324B2 (en
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盛治 田中
Seiji Tanaka
盛治 田中
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Sumitomo Electric Industries Ltd
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Abstract

To provide a coaxial wire and a multicore cable excellent in twisting resistance and electric conductivity.SOLUTION: A coaxial wire 1 includes, an insulation layer 20, an external conductor 30 and a sheath 40 sequentially laminated around a central conductor 10, in a coaxial manner. The external conductor 30 is composed of a plurality of strands 31. The strands 31 are each a copper alloy wire with a tensile strength of 320 MPa or more and breaking elongation of 10% or more. A multicore cable 50 includes a plurality of the coaxial wires 1. A cable sheath 53 is coated with a resin by an extrusion coating.SELECTED DRAWING: Figure 1

Description

本発明は、同軸電線および多心ケーブルに関する。   The present invention relates to coaxial wires and multicore cables.

特許文献1には、編組したシールド層の素線導体に銀メッキを施した素線を用いた多心ケーブルが開示されている。特許文献2には、医療機器用のケーブルの導体として、強度と導電性に優れた硬銅線が用いられていると記載されている。   Patent Document 1 discloses a multicore cable using a wire obtained by applying silver plating to a wire conductor of a braided shield layer. Patent Document 2 describes that a hard copper wire excellent in strength and conductivity is used as a conductor of a cable for a medical device.

特開2013−251257号公報JP, 2013-251257, A 特開2009−97033号公報JP, 2009-97033, A

細径の同軸電線(同軸ケーブル)や当該同軸電線が含まれる多心ケーブルに対して、さらなる耐捻回性および導電性に優れたものが要求されている。   What is more excellent in torsion resistance and conductivity is required of a thin coaxial cable (coaxial cable) and a multi-core cable including the coaxial cable.

本発明は、耐捻回性および導電性に優れた同軸電線および多心ケーブルを提供することを目的とする。   An object of the present invention is to provide a coaxial cable and a multicore cable excellent in torsion resistance and conductivity.

本発明の一態様に係る同軸電線は、
中心導体の周囲に、絶縁層、外部導体及び外被が同軸状に順次積層された同軸電線であって、
前記外部導体は複数の素線で構成されており、
前記素線は、引張強さが320MPa以上、かつ破断伸びが10%以上の銅合金線である。
The coaxial cable according to one aspect of the present invention is
A coaxial cable in which an insulating layer, an outer conductor, and a jacket are coaxially sequentially stacked around a center conductor,
The outer conductor is composed of a plurality of strands,
The strand is a copper alloy wire having a tensile strength of 320 MPa or more and a breaking elongation of 10% or more.

また、本発明の一態様に係る多心ケーブルは、上記の同軸電線を複数本と、
前記複数本の同軸電線を樹脂によって押出被覆したケーブル外被と、を備える。
Further, a multicore cable according to an aspect of the present invention comprises a plurality of the coaxial wires described above,
And a cable jacket obtained by extrusion-coating the plurality of coaxial wires with a resin.

上記発明によれば、耐捻回性および導電性に優れた同軸電線および多心ケーブルを提供することができる。   According to the above-mentioned invention, it is possible to provide a coaxial cable and a multi-core cable excellent in torsion resistance and conductivity.

本実施形態に係る同軸電線の構成を示す斜視図である。It is a perspective view which shows the structure of the coaxial wire which concerns on this embodiment. 本実施形態に係る多心ケーブルの構成を示す断面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows the structure of the multicore cable which concerns on this embodiment. 捻回試験の模式図である。It is a schematic diagram of a torsion test.

(本発明の実施形態の説明)
最初に本発明の実施態様を列記して説明する。
本発明の一態様に係る同軸電線は、
(1)中心導体の周囲に、絶縁層、外部導体及び外被が同軸状に順次積層された同軸電線であって、
前記外部導体は複数の素線で構成されており、
前記素線は、引張強さが320MPa以上、かつ破断伸びが10%以上の銅合金線である。
上記構成によれば、外部導体を構成する素線を、引張強さが320MPa以上、かつ破断伸びが10%以上の銅合金線とすることにより、耐捻回性および導電性に優れた同軸電線とすることができる。
Description of an embodiment of the present invention
First, the embodiments of the present invention will be listed and described.
The coaxial cable according to one aspect of the present invention is
(1) A coaxial cable in which an insulating layer, an outer conductor, and an outer sheath are coaxially sequentially laminated around a center conductor,
The outer conductor is composed of a plurality of strands,
The strand is a copper alloy wire having a tensile strength of 320 MPa or more and a breaking elongation of 10% or more.
According to the above configuration, a coaxial wire excellent in torsion resistance and conductivity by making the wire constituting the outer conductor a copper alloy wire having a tensile strength of 320 MPa or more and a breaking elongation of 10% or more. It can be done.

(2)前記中心導体は、0.01mm以上0.05mm以下の断面積を有してもよい。
上記構成によれば、同軸電線を細径にすることができる。
(2) The central conductor may have a cross-sectional area of 0.01 mm 2 or more and 0.05 mm 2 or less.
According to the above configuration, the coaxial cable can be reduced in diameter.

(3)前記素線の外径が0.03mm以上0.05mm以下であってもよい。
上記構成によれば、細径の同軸電線とすることができる。
(3) The outer diameter of the wire may be 0.03 mm or more and 0.05 mm or less.
According to the above configuration, a thin coaxial cable can be obtained.

また、本発明の一態様に係る多心ケーブルは、
(4)上記(1)から(3)に記載の同軸電線を複数本と、
前記複数本の同軸電線を樹脂によって押出被覆したケーブル外被と、を備える。
上記構成によれば、耐捻回性および導電性に優れた多心ケーブルとすることができる。
In addition, a multicore cable according to an aspect of the present invention is
(4) A plurality of coaxial electric wires described in (1) to (3) above,
And a cable jacket obtained by extrusion-coating the plurality of coaxial wires with a resin.
According to the above-mentioned configuration, it is possible to make a multicore cable excellent in torsion resistance and conductivity.

(本発明の実施形態の詳細)
本発明の実施形態に係る同軸電線および多心ケーブルの具体例を、以下に図面を参照しつつ説明する。
なお、本発明はこれらの例示に限定されるものではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。
(Details of the embodiment of the present invention)
Specific examples of the coaxial cable and the multicore cable according to the embodiment of the present invention will be described below with reference to the drawings.
The present invention is not limited to these exemplifications, but is shown by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

図1は、同軸電線の一例を示す斜視図であり、同軸電線の各部材を段階的に露出させた同軸電線の端部を示す。
図1に示すように、同軸電線1は、中央に配置された中心導体10と、中心導体10の周囲に配置された絶縁層20と、絶縁層20の周囲に配置された外部導体30と、外部導体30の周囲に配置された外被40とを備えている。中心導体10、絶縁層20、外部導体30、および外被40は、同軸状に順次積層されている。
FIG. 1 is a perspective view showing an example of a coaxial cable, showing an end of the coaxial cable in which each member of the coaxial cable is exposed stepwise.
As shown in FIG. 1, the coaxial cable 1 includes a central conductor 10 disposed at the center, an insulating layer 20 disposed around the central conductor 10, and an outer conductor 30 disposed around the insulating layer 20. And a jacket 40 disposed around the outer conductor 30. The central conductor 10, the insulating layer 20, the outer conductor 30, and the jacket 40 are sequentially laminated coaxially.

中心導体10は、例えば導電性金属の細径線材を複数(本例では7本)撚り合わせることによって形成されている。細径線材としては、硬銅線11を用いることが好ましい。中心導体10の断面積は、0.01mm以上0.05mm以下としてもよく、これはAWG(American Wire Gauge)規格の#37〜#30に相当する。なお、細径線材として、硬銅線の他に例えば銅合金線や軟銅線等を用いてもよい。 The central conductor 10 is formed, for example, by twisting a plurality of (in this example, seven) small diameter wires of a conductive metal. It is preferable to use hard copper wire 11 as the small diameter wire. The cross-sectional area of the center conductor 10 may be 0.01 mm 2 or more 0.05 mm 2 or less, which corresponds to # 37 to # 30 of AWG (American Wire Gauge) standard. In addition to a hard copper wire, for example, a copper alloy wire, a soft copper wire or the like may be used as the small diameter wire.

絶縁層20は、例えばFEP(テトラフルオロエチレン・ヘキサフルオロプロピレン共重合体)、PFA(テトラフルオロエチレン・パーフルオロアルキルビニルエーテル共重合体)等のフッ素系樹脂で形成されている。絶縁層20の外径は、0.07mm以上0.20mm以下程度である。   The insulating layer 20 is formed of, for example, a fluorine-based resin such as FEP (tetrafluoroethylene-hexafluoropropylene copolymer) or PFA (tetrafluoroethylene-perfluoroalkylvinylether copolymer). The outer diameter of the insulating layer 20 is about 0.07 mm or more and 0.20 mm or less.

外部導体30は、導電性を有する複数の金属素線31によって構成されている。金属素線31は、引張強さが320MPa以上である。かつ、金属素線31の破断伸びは10%以上である。金属素線31は、絶縁層20の周囲に複数本が横巻き(本例では螺旋巻き)されている。金属素線31の外径は、例えば0.03mm以上0.05mm以下である。   The outer conductor 30 is composed of a plurality of conductive metal wires 31. The metal wire 31 has a tensile strength of 320 MPa or more. And the breaking elongation of the metal wire 31 is 10% or more. A plurality of metal strands 31 are laterally wound (in this example, spirally wound) around the insulating layer 20. The outer diameter of the metal wire 31 is, for example, 0.03 mm or more and 0.05 mm or less.

外被40は、同軸電線1の最外層であり、例えばETFE(エチレン−テトラフルオロエチレン共重合体)、FEP、PFA等のフッ素系樹脂やPET(ポリエチレンテレフタレート)などのポリエステルテープ巻きで構成されている。外被40の厚さは、0.01mm〜0.03mm程度である。   The jacket 40 is the outermost layer of the coaxial wire 1, and is made of, for example, a fluorine resin such as ETFE (ethylene-tetrafluoroethylene copolymer), FEP, PFA, or a polyester tape wound such as PET (polyethylene terephthalate). There is. The thickness of the jacket 40 is about 0.01 mm to 0.03 mm.

同軸電線1は、例えば電子機器などに用いられ、筐体間を電気的に接続する通信用の同軸電線としても用いることができる。   The coaxial electric wire 1 is used, for example, in an electronic device or the like, and can also be used as a coaxial electric wire for communication that electrically connects the housings.

同軸電線1は、引張強さが320MPa以上で、破断伸びが10%以上の複数の金属素線31で形成された外部導体30を備えている。このため、外部導体30の引張強さと破断伸びとのバランスがよいので、細径であっても優れた耐捻回性と導電性とを得ることができる。また例えば、中心導体10の断面積を0.01mm以上0.05mm以下とすることにより、同軸電線1を細径とすることができる。さらに例えば金属素線31の外径を0.03mm以上0.05mm以下とすることにより同軸電線1を細径とすることができる。 The coaxial wire 1 includes an outer conductor 30 formed of a plurality of metal strands 31 having a tensile strength of 320 MPa or more and a breaking elongation of 10% or more. Therefore, since the balance between the tensile strength and the breaking elongation of the outer conductor 30 is good, excellent torsional resistance and conductivity can be obtained even with a small diameter. Further, for example, by the cross-sectional area of the central conductor 10 and the 0.01 mm 2 or more 0.05 mm 2 or less, can be a coaxial cable 1 with a small diameter. Furthermore, for example, by setting the outer diameter of the metal wire 31 to 0.03 mm or more and 0.05 mm or less, the coaxial electric wire 1 can be reduced in diameter.

図2は、複数の同軸電線を備える多心ケーブルの一例を示す断面図である。
図2に示すように、多心ケーブル50は、複数(本例では19本)の同軸電線1と、これらの同軸電線1の周囲を覆うように設けられた押え巻51とを備えている。また、多心ケーブル50は、押え巻51の周囲に設けられたシールド層52と、シールド層52の周囲に形成されたケーブル外被53とを備えている。
FIG. 2 is a cross-sectional view showing an example of a multicore cable provided with a plurality of coaxial wires.
As shown in FIG. 2, the multicore cable 50 includes a plurality (19 in this example) of coaxial wires 1 and a presser winding 51 provided so as to cover the periphery of the coaxial wires 1. The multicore cable 50 further includes a shield layer 52 provided around the press-fit winding 51 and a cable jacket 53 formed around the shield layer 52.

同軸電線1は、図1で説明した構成を有しており、例えば19本の同軸電線1が集められフッ素樹脂などの押え巻51で束ねられている。なお、19本の同軸電線1は、一括して撚り合わされていてもよい。   The coaxial cable 1 has the configuration described with reference to FIG. 1 and, for example, the 19 coaxial cables 1 are collected and bundled by a press-wrap 51 made of fluorine resin or the like. The nineteen coaxial wires 1 may be twisted together at one time.

シールド層52は、例えば外径数十μmの錫メッキされた銅線などを横巻きしてまたは編組して構成されている。ケーブル外被53は、例えばポリ塩化ビニル(PVC)やポリオレフィン系樹脂等を押出被覆することにより形成されている。   The shield layer 52 is formed, for example, by laterally winding or braiding a tin-plated copper wire having an outer diameter of several tens of μm. The cable jacket 53 is formed by extrusion-coating, for example, polyvinyl chloride (PVC) or a polyolefin resin.

このような多心ケーブル50によれば、多心ケーブル50を構成する電線として、上述した細径の同軸電線1が用いられており、同軸電線1の外部導体30を構成する金属素線31の引張強さが320MPa以上で、破断伸びが10%以上の銅合金線とされている。このため、耐捻回性、導電性に優れた多心ケーブルとすることができる。   According to such a multi-core cable 50, the above-described small diameter coaxial wire 1 is used as a wire constituting the multi-core cable 50, and the metal wire 31 constituting the outer conductor 30 of the coaxial wire 1 is used. The copper alloy wire has a tensile strength of 320 MPa or more and a breaking elongation of 10% or more. For this reason, it can be set as a multi-core cable excellent in torsion resistance and conductivity.

次に、多心ケーブルの捻回試験、および同軸電線の減衰量の評価について説明する。
上述したように中心導体の周囲に、絶縁体、外部導体及び外被を同軸状に順次積層して、表1に示すNo.1〜No.5の構成を満たす同軸電線を用意する。表1に示すNo.1〜No.5の同軸電線では、中心導体および外部導体の構成を変化させている。No.1〜No.5の同軸電線をそれぞれ19本ずつ用意し、No毎に用意した19本の同軸電線を備える多心ケーブルを作製する。そして、作製したそれぞれの多心ケーブルについて下記の条件で捻回試験を行った。また、それぞれの同軸電線について下記の条件で減衰量の評価を行った。なお、No.1は実施例1、No.5は実施例2を示し、No.2〜No.4は比較例1〜3を示す。
Next, the torsion test of the multicore cable and the evaluation of the amount of attenuation of the coaxial cable will be described.
As described above, the insulator, the outer conductor, and the jacket are coaxially sequentially laminated around the center conductor. 1 to No. Prepare a coaxial cable that meets the configuration of 5. No. shown in Table 1 1 to No. In the fifth coaxial cable, the configurations of the center conductor and the outer conductor are changed. No. 1 to No. Nineteen coaxial wires of 5 are prepared, and a multi-core cable comprising 19 coaxial wires prepared for each No is manufactured. And the twist test was done on the following conditions about each produced multicore cable. Moreover, the amount of attenuation was evaluated on the following conditions about each coaxial wire. No. 1 corresponds to Example 1, No. 1; No. 5 shows Example 2, No. 5 shows. 2-No. 4 shows comparative examples 1 to 3.

Figure 2019061775
Figure 2019061775

表1に示すように、No.1の同軸電線では、中心導体に硬銅線を用いた。また、外部導体を構成する素線に引張強さが320MPaで、破断伸びが14%の銅合金線を用いた。
No.2の同軸電線では、中心導体に銀メッキ軟銅線を用い、外部導体を構成する素線として、引張強さが250MPaで、破断伸びが15%の銀メッキ軟銅線を用いた。
No.3の同軸電線では、中心導体に銀メッキ軟銅線を用い、外部導体を構成する素線として、引張強さが500MPaで、破断伸びが4%の硬銅線を用いた。
No.4の同軸電線では、中心導体に銀メッキ軟銅線を用い、外部導体を構成する素線として、引張強さが750MPaで、破断伸びが3%の銅合金線を用いた。
No.5の同軸電線では、中心導体に銀メッキ銅合金線を用い、外部導体を構成する素線として、引張強さが450MPaで、破断伸びが10%の銅合金線を用いた。
なお、No.1〜No.5の全てにおいて、外部導体の素線の外径は0.04mm、中心導体の断面積は0.05mmとした。
As shown in Table 1, no. In the coaxial wire of No. 1, hard copper wire was used for the central conductor. In addition, a copper alloy wire having a tensile strength of 320 MPa and an elongation at break of 14% was used for the strands constituting the outer conductor.
No. In the coaxial wire of No. 2, a silver-plated soft copper wire was used as a central conductor, and a silver-plated soft copper wire having a tensile strength of 250 MPa and a breaking elongation of 15% was used as a wire constituting the outer conductor.
No. In the coaxial wire of No. 3, a silver-plated soft copper wire was used for the central conductor, and a hard copper wire having a tensile strength of 500 MPa and an elongation at break of 4% was used as a wire constituting the outer conductor.
No. In the coaxial wire of No. 4, a silver-plated soft copper wire was used as a central conductor, and a copper alloy wire having a tensile strength of 750 MPa and a breaking elongation of 3% was used as a wire constituting the outer conductor.
No. In the coaxial wire of No. 5, a silver-plated copper alloy wire was used for the central conductor, and a copper alloy wire having a tensile strength of 450 MPa and an elongation at break of 10% was used as a wire constituting the outer conductor.
No. 1 to No. In all of 5, the outer diameter of the strands of the outer conductor was 0.04 mm, and the cross-sectional area of the center conductor was 0.05 mm 2 .

(捻回試験)
図3に示すように、長さ2mの多心ケーブルCを鉛直に垂れ下がらせて、多心ケーブルCの上端と下端とをそれぞれチャック61で把持した。下端のチャック61を固定させた状態で、上端のチャック61をケーブルCの軸A回りに左右へ−360°から+360°まで30回転/分の速度で捻回させた。1万回捻じった後、ケーブルCを構成する同軸電線の断線の有無を調べ、中心導体および外部導体ともに断線がなければ合格、いずれかに断線があれば不合格とした。
(Twist test)
As shown in FIG. 3, the multicore cable C having a length of 2 m was vertically hung down, and the upper end and the lower end of the multicore cable C were gripped by the chucks 61, respectively. With the chuck 61 at the lower end fixed, the chuck 61 at the upper end was twisted around the axis A of the cable C at a speed of 30 rotations / minute from -360 ° to + 360 °. After twisting 10,000 times, the presence or absence of a break in the coaxial cable constituting the cable C was checked, and if neither the central conductor nor the outer conductor had a break, it passed, or if any break occurred, it was rejected.

(減衰量の評価)
各多心ケーブルを作製するために用意したNo.1〜No.5の各同軸電線について、高周波帯域(10GHz)の信号を伝送させた際のケーブル長2mあたりの減衰量(dB/2m)を測定した。減衰量が15dB/2m以下ならば合格、15dB/2mよりも大きければ不合格とした。
(Evaluation of attenuation)
No. 1 prepared for producing each multi-core cable. 1 to No. The amount of attenuation (dB / 2 m) per 2 m of cable length when transmitting a signal in the high frequency band (10 GHz) was measured for each of the five coaxial wires. If the attenuation was 15 dB / 2 m or less, it passed, and if it was larger than 15 dB / 2 m, it was rejected.

(捻回試験結果)
No.1,No.3〜No.5の各同軸電線によって構成される多心ケーブルでは、捻回試験後において中心導体および外部導体ともに断線が生じなかった。これに対して、No.2の同軸電線によって構成される多心ケーブルでは、捻回試験後において中心導体および外部導体に破断が生じた。これは、No.2の外部導体を構成する銀メッキ軟銅線の引張強さが弱い(250MPa)ためである。これにより、外部導体を構成する素線の引張強さを320MPa以上とすることで、捻回性について優れた耐性を実現できることが確認できた。
(Result of twisting test)
No. 1, No. 3-No. In the multi-core cable constituted by the five coaxial wires, no break occurred in both the center conductor and the outer conductor after the twisting test. On the other hand, no. In the multicore cable constituted by two coaxial wires, breakage occurred in the center conductor and the outer conductor after the twisting test. This is no. This is because the tensile strength of the silver-plated soft copper wire constituting the outer conductor of No. 2 is weak (250 MPa). Thereby, it was confirmed that excellent resistance to twistability can be realized by setting the tensile strength of the strands constituting the outer conductor to 320 MPa or more.

(減衰量の評価結果)
No.1,No.2,No.5の各同軸電線では、減衰量が15dB/2m以下となった。これに対して、No.3,No.4の同軸電線では、減衰量が15dB/2mよりも大きくなった。No.3,No.4の同軸電線で減衰量が大きくなったのは、同軸電線を構成する外部導体の伸びが小さい(素線の破断伸びが3〜4%である)ために、絶縁層の周囲全体に横巻きされていた外部導体の素線が同周囲の一部の領域に偏在してしまったためと考えられる。ボビンに巻き取られた同軸電線に対して巻重ねによる力が加わった時に、外部導体の素線の伸びが小さいために素線が絶縁層の一方に偏在したと考えられる。本発明では、外部導体を構成する素線の破断伸びを10%以上とすることで、外部導体が絶縁層の一方に偏在せず、同軸電線における減衰量の増加を抑制できることが確認できた。
(Evaluation result of attenuation)
No. 1, No. 2, No. The attenuation amount of each coaxial cable of No. 5 was 15 dB / 2 m or less. On the other hand, no. 3, No. In the coaxial cable of 4, the attenuation amount was larger than 15 dB / 2 m. No. 3, No. The reason why the amount of attenuation increased in the coaxial wire of 4 was that the elongation of the outer conductor that composes the coaxial wire is small (the elongation at break of the wire is 3 to 4%). It is considered that the strands of the outer conductor, which had been carried out, were unevenly distributed in a part of the area around the same. When a force due to winding is applied to the coaxial wire wound around the bobbin, it is considered that the wire is unevenly distributed to one of the insulating layers because the elongation of the wire of the outer conductor is small. In the present invention, it was confirmed that by setting the breaking elongation of the strands forming the outer conductor to 10% or more, the outer conductor is not unevenly distributed in one of the insulating layers, and an increase in the amount of attenuation in the coaxial cable can be suppressed.

以上の結果より、同軸電線の外部導体を構成する素線として銅合金線を使用し、その銅合金線の引張強さを320MPa以上、かつ破断伸びを10%以上とすることで、細径であっても優れた耐捻回性と導電性とを得られることが確認できた。   From the above results, a copper alloy wire is used as a wire constituting the outer conductor of the coaxial wire, and the tensile strength of the copper alloy wire is 320 MPa or more, and the breaking elongation is 10% or more, so with a small diameter. It has been confirmed that excellent torsional resistance and conductivity can be obtained.

以上、本発明を詳細にまた特定の実施態様を参照して説明したが、本発明の精神と範囲を逸脱することなく様々な変更や修正を加えることができることは当業者にとって明らかである。また、上記説明した構成部材の数、位置、形状等は上記実施の形態に限定されず、本発明を実施する上で好適な数、位置、形状等に変更することができる。   While the invention has been described in detail and with reference to specific embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. Further, the number, the position, the shape, and the like of the component members described above are not limited to the above embodiment, and can be changed to the number, the position, the shape, and the like suitable for practicing the present invention.

1:同軸電線
10:中心導体
20:絶縁層
30:外部導体
31:金属素線(素線)
40:外被
50:多心ケーブル
51:押え巻
52:シールド層
53:ケーブル外被
1: Coaxial wire 10: Center conductor 20: Insulating layer 30: Outer conductor 31: Metal wire (wire)
40: Outer sheath 50: Multi-core cable 51: Presser winding 52: Shield layer 53: Cable outer sheath

Claims (4)

中心導体の周囲に、絶縁層、外部導体及び外被が同軸状に順次積層された同軸電線であって、
前記外部導体は複数の素線で構成されており、
前記素線は、引張強さが320MPa以上、かつ破断伸びが10%以上の銅合金線である、
同軸電線。
A coaxial cable in which an insulating layer, an outer conductor, and a jacket are coaxially sequentially stacked around a center conductor,
The outer conductor is composed of a plurality of strands,
The strand is a copper alloy wire having a tensile strength of 320 MPa or more and a breaking elongation of 10% or more.
Coaxial wire.
前記中心導体は、0.01mm以上0.05mm以下の断面積を有する、
請求項1に記載の同軸電線。
It said center conductor has a cross-sectional area of 0.01 mm 2 or more 0.05 mm 2 or less,
The coaxial wire according to claim 1.
前記素線の外径が0.03mm以上0.05mm以下である、
請求項1または請求項2に記載の同軸電線。
The outer diameter of the strand is 0.03 mm or more and 0.05 mm or less.
The coaxial wire according to claim 1 or 2.
請求項1から請求項3のいずれか一項に記載の同軸電線を複数本と、
前記複数本の同軸電線を樹脂によって押出被覆したケーブル外被と、を備える多心ケーブル。
A plurality of coaxial wires according to any one of claims 1 to 3;
A cable jacket obtained by extrusion-coating the plurality of coaxial wires with a resin.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004014337A (en) * 2002-06-07 2004-01-15 Hitachi Cable Ltd Extrafine multicore coaxial cable
JP2007077505A (en) * 2006-10-20 2007-03-29 Hitachi Cable Ltd Cu-Ag ALLOY WIRE, AND Cu-Ag ALLOY WIRE FOR COAXIAL CABLE
JP2014156617A (en) * 2013-02-14 2014-08-28 Sumitomo Electric Ind Ltd Copper alloy wire, copper alloy twisted wire, coated electric wire, and coated electric wire having terminal

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004014337A (en) * 2002-06-07 2004-01-15 Hitachi Cable Ltd Extrafine multicore coaxial cable
JP2007077505A (en) * 2006-10-20 2007-03-29 Hitachi Cable Ltd Cu-Ag ALLOY WIRE, AND Cu-Ag ALLOY WIRE FOR COAXIAL CABLE
JP2014156617A (en) * 2013-02-14 2014-08-28 Sumitomo Electric Ind Ltd Copper alloy wire, copper alloy twisted wire, coated electric wire, and coated electric wire having terminal

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