JP2017204409A - Low air leak wire - Google Patents

Low air leak wire Download PDF

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JP2017204409A
JP2017204409A JP2016096353A JP2016096353A JP2017204409A JP 2017204409 A JP2017204409 A JP 2017204409A JP 2016096353 A JP2016096353 A JP 2016096353A JP 2016096353 A JP2016096353 A JP 2016096353A JP 2017204409 A JP2017204409 A JP 2017204409A
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conductor
insulated wire
insulating layer
diameter
wire
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JP6645350B2 (en
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堀　賢治
Kenji Hori
賢治 堀
康宏 高井
Yasuhiro Takai
康宏 高井
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Sumitomo Electric Industries Ltd
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Sumitomo Electric Industries Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/08—Several wires or the like stranded in the form of a rope
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H01B7/0258—Disposition of insulation comprising one or more longitudinal lapped layers of insulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/1875—Multi-layer sheaths

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Insulated Conductors (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an insulated wire with less air leak, excellent in productivity and easy to flex.SOLUTION: An insulated wire 1 includes an insulator layer 20 formed on an outer circumference of a conductor 10 with a plurality of conductor strands 11 twisted together. The insulator layer 20 includes a fluorine resin, a rubber containing a fluorine, or a mixture thereof. In the conductor 10, a twist pitch (mm)×conductor strand diameter (mm)×√ conductor strand number (pieces)/conductor diameter (mm) is 24-28.SELECTED DRAWING: Figure 1

Description

本発明は、導体素線が複数本撚り合わされた導体の外周に、絶縁層が形成された絶縁電線に関する。   The present invention relates to an insulated wire in which an insulating layer is formed on the outer periphery of a conductor in which a plurality of conductor strands are twisted together.

特許文献１には、細径の気密電線が開示されている。   Patent Document 1 discloses a small-diameter airtight electric wire.

特開２００５−１９３９２号公報JP 2005-19392 A

太い電線では、細い電線に比べて、導体間に又は導体と絶縁層との間に隙間が増えるため、エアリークがより大きな課題となる。また、絶縁層に耐熱性等に優れるフッ素樹脂又はフッ素を含むゴムを用いる場合、フッ素樹脂又はフッ素を含むゴムは充実押出による被覆成形ができないため、引き落としによる被覆成形が採用される。一方、引き落としによる被覆成形では、導体と絶縁層間との間に隙間ができ易く、エアリークの原因となる。   In a thick electric wire, since a gap increases between conductors or between a conductor and an insulating layer as compared with a thin electric wire, air leakage becomes a larger problem. In addition, when a fluororesin having excellent heat resistance or a rubber containing fluorine is used for the insulating layer, the fluororesin or the rubber containing fluorine cannot be coated by solid extrusion. On the other hand, in covering molding by pulling down, a gap is easily formed between the conductor and the insulating layer, which causes air leakage.

本発明は、エアリークが少なく、生産性が良く曲げやすい絶縁電線を提供することを目的とする。   An object of this invention is to provide the insulated wire with few air leaks, good productivity, and being easy to bend.

上記目的を達成するために、本発明の絶縁電線は、
導体素線が複数本撚り合わされた導体の外周に、絶縁層が形成された絶縁電線であって、
前記絶縁層が、フッ素樹脂、フッ素を含むゴムまたはそれらの混合物を含み、
前記導体の撚りピッチ（ｍｍ）×導体素線径（ｍｍ）×√導体素線数（本）／導体径（ｍｍ）が２４以上２８以下である。 In order to achieve the above object, the insulated wire of the present invention comprises:
An insulated wire in which an insulating layer is formed on the outer periphery of a conductor in which a plurality of conductor strands are stranded,
The insulating layer includes a fluororesin, a fluorine-containing rubber, or a mixture thereof;
The conductor twist pitch (mm) × conductor wire diameter (mm) × √number of conductor wires (lines) / conductor diameter (mm) is 24 or more and 28 or less.

本発明によれば、エアリークが少なく、生産性が良く曲げやすい絶縁電線を提供することができる。   According to the present invention, it is possible to provide an insulated wire that is less likely to be air leaked, has good productivity, and is easily bent.

本発明の実施形態に係る絶縁電線の一例を示す断面図である。It is sectional drawing which shows an example of the insulated wire which concerns on embodiment of this invention. 本発明の実施形態に係る導体が圧縮されている絶縁電線の一例を示す断面図である。It is sectional drawing which shows an example of the insulated wire with which the conductor which concerns on embodiment of this invention is compressed.

［本発明の実施形態の説明］
最初に本発明の実施形態の内容を列記して説明する。
本発明の実施形態に係る絶縁電線は、
（１）導体素線が複数本撚り合わされた導体の外周に、絶縁層が形成された絶縁電線であって、
前記絶縁層が、フッ素樹脂、フッ素を含むゴムまたはそれらの混合物を含み、
前記導体の撚りピッチ（ｍｍ）×導体素線径（ｍｍ）×√導体素線数（本）／導体径（ｍｍ）が２４以上２８以下である。
この構成によれば、エアリークが改善され生産性が良く曲げやすい絶縁電線を得ることができる。 [Description of Embodiment of the Present Invention]
First, the contents of the embodiment of the present invention will be listed and described.
The insulated wire according to the embodiment of the present invention is
(1) An insulated wire in which an insulating layer is formed on the outer periphery of a conductor in which a plurality of conductor strands are stranded,
The insulating layer includes a fluororesin, a fluorine-containing rubber, or a mixture thereof;
The conductor twist pitch (mm) × conductor wire diameter (mm) × √number of conductor wires (lines) / conductor diameter (mm) is 24 or more and 28 or less.
According to this configuration, it is possible to obtain an insulated wire that is improved in air leak and has good productivity and is easily bent.

（２）また、（１）の絶縁電線において、
前記導体の断面積が２ｍｍ２以上であることが好ましい。
この構成によれば、太い電線においてエアリーク抑制効果を顕著に得ることができる。 (2) In the insulated wire of (1),
The cross-sectional area of the conductor is preferably 2 mm 2 or more.
According to this configuration, the effect of suppressing air leak can be significantly obtained in a thick electric wire.

（３）また、（１）又は（２）の絶縁電線において、
前記導体が圧縮されていることが好ましい。
この構成によれば、絶縁電線の細径化が可能となり、また導体間の隙間が減りさらにエアリークを減少させることができる。 (3) In the insulated wire of (1) or (2),
The conductor is preferably compressed.
According to this configuration, it is possible to reduce the diameter of the insulated wire, reduce the gap between the conductors, and further reduce air leakage.

（４）また、（１）〜（３）のいずれか一項の絶縁電線において、
前記絶縁層がフッ素を含むゴムを含むことが好ましい。
この構成によれば、フッ素を含むゴムを電線の被覆材に使用することにより、耐熱性（１５０℃）、耐油性があり、かつ柔軟な電線を得ることができる。 (4) Moreover, in the insulated wire according to any one of (1) to (3),
It is preferable that the insulating layer includes a rubber containing fluorine.
According to this configuration, a flexible electric wire having heat resistance (150 ° C.) and oil resistance can be obtained by using a rubber containing fluorine as a covering material for the electric wire.

（５）また、（４）の絶縁電線において、
前記絶縁層がテトラフルオロエチレン・プロピレン共重合体を含むことが好ましい。
この構成によれば、テトラフルオロエチレン・プロピレン共重合体（ＴＦＥ−Ｐ）を使用することにより、絶縁抵抗の大きな電線を得ることができる。 (5) Also, in the insulated wire of (4),
The insulating layer preferably contains a tetrafluoroethylene / propylene copolymer.
According to this configuration, an electric wire having a large insulation resistance can be obtained by using a tetrafluoroethylene / propylene copolymer (TFE-P).

［本発明の実施形態の詳細］
以下、本発明に係る絶縁電線の実施の形態の例を、図面を参照して説明する。
図１に示されるように、本実施係形態に係る絶縁電線１は、導体１０の外周に、絶縁層２０が形成された構成である。 [Details of the embodiment of the present invention]
Hereinafter, an example of an embodiment of an insulated wire concerning the present invention is explained with reference to drawings.
As shown in FIG. 1, the insulated wire 1 according to the present embodiment has a configuration in which an insulating layer 20 is formed on the outer periphery of a conductor 10.

導体１０としては、導体素線１１が複数本撚り合わされた撚線が用いられる。導体素線１１は、電子信号を伝送できる程度に導電率の高いものであり、軟銅線や銅合金線が使用できる。これらが錫等によりメッキされた電線であってもよい。   As the conductor 10, a stranded wire in which a plurality of conductor strands 11 are twisted together is used. The conductor wire 11 has a conductivity high enough to transmit an electronic signal, and an annealed copper wire or a copper alloy wire can be used. These may be electric wires plated with tin or the like.

図１に示す絶縁電線１は、直径０．２６ｍｍの導体素線１１を３７本有している。なお、本発明において導体素線の直径及び本数はこれらに限られず、用途に応じて適宜変更が可能である。   The insulated wire 1 shown in FIG. 1 has 37 conductor strands 11 having a diameter of 0.26 mm. In the present invention, the diameter and number of the conductor wires are not limited to these, and can be appropriately changed according to the application.

絶縁電線１において、絶縁電線１の長手方向に直行する断面における導体１０の断面積は２．０ｍｍ２以上であることが好ましい。２．０ｍｍ２未満であると、許容電流が小さくなり好ましくない。 In the insulated wire 1, it is preferable that the cross-sectional area of the conductor 10 in the cross section orthogonal to the longitudinal direction of the insulated wire 1 is 2.0 mm < 2 > or more. If it is less than 2.0 mm 2 , the allowable current becomes small, which is not preferable.

複数本の導体素線１１は、一体に撚り合わされている。複数本の導体素線１１の全体の撚りピッチは、導体１０を構成する導体素線径と導体素線数及び導体径により求められる以下の値Ｐを考慮して定められる。
Ｐ＝撚りピッチ（ｍｍ）×導体素線径（ｍｍ）×√導体素線数（本）／導体径（ｍｍ）
導体素線１１は前記Ｐが２４以上２８以下となる撚りピッチで一体に撚り合わされている。Ｐが２４未満であると、生産性が悪い上に曲げにくくなる。また、Ｐが２８より大きいとエアリークが増加する。 The plurality of conductor wires 11 are twisted together. The overall twist pitch of the plurality of conductor strands 11 is determined in consideration of the following value P obtained from the conductor strand diameter, the number of conductor strands, and the conductor diameter constituting the conductor 10.
P = twisting pitch (mm) × conductor wire diameter (mm) × √number of conductor wires (pieces) / conductor diameter (mm)
The conductor strands 11 are twisted together at a twist pitch at which the P is 24 or more and 28 or less. When P is less than 24, productivity is poor and bending becomes difficult. On the other hand, if P is greater than 28, air leakage increases.

導体１０は圧縮して用いてもよい。例えば、図２に示すように７本の導体素線１１ａが一体に撚り合わされて圧縮された圧縮導体１１０であってもよい。なお、本発明において導体素線１１ａの本数はこれらに限られず、用途に応じて適宜変更が可能である。圧縮導体１１０は、複数本の導体素線１１ａが撚り合わされるとともに円形圧縮されてなる。この場合には、円形圧縮により圧縮導体１１０が細径化されやすく、また導体素線１１ａ間の隙間が減少するためエアリークが減少し、好ましい。   The conductor 10 may be used after being compressed. For example, as shown in FIG. 2, a compressed conductor 110 in which seven conductor strands 11 a are integrally twisted and compressed may be used. In addition, in this invention, the number of the conductor strands 11a is not restricted to these, It can change suitably according to a use. The compressed conductor 110 is formed by circular compression while a plurality of conductor strands 11a are twisted together. In this case, the compressed conductor 110 is easily reduced in diameter by circular compression, and the gap between the conductor strands 11a is reduced.

絶縁層２０には、フッ素樹脂、フッ素を含むゴムまたはそれらの混合物が使用される。
フッ素樹脂としては、例えばポリフッ化ビニリデン（ＰＶｄＦ）及びテトラフルオロエチレン・エチレン共重合体（ＥＴＦＥ）等、フッ素を含むゴムとしては、例えばフッ素ゴム及びフロロシリコーンゴム等があげられる。フッ素ゴムの例としては、テトラフルオロエチレン・プロピレン共重合体（ＴＦＥ−Ｐ）、１，１−ジフルオロエチレン・テトラフルオロエチレン・プロピレン共重合体（ＴＦＥ−Ｐ−ＶｄＦ）、クロロスルフォン化ポリエチレン・テトラフルオロエチレン・プロピレン共重合体（ＴＦＥ−Ｐ−ＣＳＭ）及びフッ化ビニリデン系フッ素ゴム（ＦＫＭ）等が挙げられる。 For the insulating layer 20, a fluororesin, a rubber containing fluorine, or a mixture thereof is used.
Examples of the fluororesin include polyvinylidene fluoride (PVdF) and tetrafluoroethylene / ethylene copolymer (ETFE). Examples of the rubber containing fluorine include fluororubber and fluorosilicone rubber. Examples of fluororubber include tetrafluoroethylene / propylene copolymer (TFE-P), 1,1-difluoroethylene / tetrafluoroethylene / propylene copolymer (TFE-P-VdF), chlorosulfonated polyethylene / tetra Examples thereof include fluoroethylene / propylene copolymer (TFE-P-CSM) and vinylidene fluoride fluororubber (FKM).

絶縁層２０に用いられるフッ素樹脂、フッ素を含むゴムまたはそれらの混合物は、引き落とし成形によって、導体１０に被覆される。充実押出成形によらず、引き落とし成形によるため、導体１０と絶縁層２０の間に凹型の空隙部が形成される。   The fluororesin, fluorine-containing rubber, or mixture thereof used for the insulating layer 20 is coated on the conductor 10 by drop molding. A concave cavity is formed between the conductor 10 and the insulating layer 20 because it is based on drop molding rather than full extrusion molding.

以上において実施形態を説明したが、本発明は上記実施形態に限定されるものでなく、必要に応じて他の構成を採用することが可能である。   Although the embodiment has been described above, the present invention is not limited to the above-described embodiment, and other configurations can be adopted as necessary.

次に、本発明の実施例について説明する。実施例は本発明の範囲を限定するものではない。   Next, examples of the present invention will be described. The examples are not intended to limit the scope of the invention.

＜例１＞
直径０．２６ｍｍの錫メッキ軟銅線を撚りピッチ３２ｍｍで３７本撚り合わせ、断面積２．０ｍｍ２で外径１．８２ｍｍの導体を得た。この導体に、厚み０．３９ｍｍの架橋フッ素ゴム（ＴＦＥ−Ｐ）からなる絶縁層を引き落としにより被覆し、外径２．６ｍｍの絶縁電線を得た。 <Example 1>
Thirty-seven tin-plated annealed copper wires having a diameter of 0.26 mm were twisted and twisted at a pitch of 32 mm to obtain a conductor having a cross-sectional area of 2.0 mm 2 and an outer diameter of 1.82 mm. This conductor was covered with an insulating layer made of cross-linked fluororubber (TFE-P) having a thickness of 0.39 mm to obtain an insulated wire having an outer diameter of 2.6 mm.

＜例２＞
直径０．２６ｍｍの錫メッキ軟銅線を撚りピッチ２８ｍｍで３７本撚り合わせ、断面積が２．０ｍｍ２で外径１．８２ｍｍの導体を得た。この導体に、厚み０．３９ｍｍの架橋フッ素ゴム（ＴＦＥ−Ｐ−ＶｄＦ）からなる絶縁層を引き落としにより被覆し、外径２．６ｍｍの絶縁電線を得た。 <Example 2>
Thirty-seven tin-plated annealed copper wires having a diameter of 0.26 mm were twisted and twisted at a pitch of 28 mm to obtain a conductor having a cross-sectional area of 2.0 mm 2 and an outer diameter of 1.82 mm. The conductor was covered with an insulating layer made of cross-linked fluororubber (TFE-P-VdF) having a thickness of 0.39 mm to obtain an insulated wire having an outer diameter of 2.6 mm.

＜例３＞
直径０．２６ｍｍの錫メッキ軟銅線を撚りピッチ３０ｍｍで３７本撚り合わせ、断面積が２．０ｍｍ２で外径１．８２ｍｍの導体を得た。この導体に、厚み０．３９ｍｍの架橋フッ素ゴム（ＴＦＥ−Ｐ−ＣＳＭ）からなる絶縁層を引き落としにより被覆し、外径２．６ｍｍの絶縁電線を得た。 <Example 3>
Thirty-seven tin-plated annealed copper wires having a diameter of 0.26 mm were twisted and twisted at a pitch of 30 mm to obtain a conductor having a cross-sectional area of 2.0 mm 2 and an outer diameter of 1.82 mm. The conductor was covered with an insulating layer made of cross-linked fluororubber (TFE-P-CSM) having a thickness of 0.39 mm to obtain an insulated wire having an outer diameter of 2.6 mm.

＜例４＞
直径０．２６ｍｍの錫メッキ軟銅線を撚りピッチ４０ｍｍで３７本撚り合わせ、断面積が２．０ｍｍ２で外径１．８２ｍｍの導体を得た。この導体に、厚み０．３９ｍｍの架橋フッ素ゴム（ＴＦＥ−Ｐ）からなる絶縁層を引き落としにより被覆し、外径２．６ｍｍの絶縁電線を得た。 <Example 4>
A tin-plated annealed copper wire having a diameter of 0.26 mm was twisted and twisted at a twist pitch of 40 mm to obtain a conductor having a cross-sectional area of 2.0 mm 2 and an outer diameter of 1.82 mm. This conductor was covered with an insulating layer made of cross-linked fluororubber (TFE-P) having a thickness of 0.39 mm to obtain an insulated wire having an outer diameter of 2.6 mm.

＜例５＞
直径０．３２ｍｍの錫メッキ軟銅線を撚りピッチ３３ｍｍで４１本撚り合わせ、断面積が３．０ｍｍ２で外径１．８２ｍｍの導体を得た。この導体に、厚み０．４２ｍｍの架橋フッ素ゴム（ＴＦＥ−Ｐ）からなる絶縁層を引き落としにより被覆し、外径３．４ｍｍの絶縁電線を得た。 <Example 5>
Forty-one tin plated annealed copper wires with a diameter of 0.32 mm were twisted and twisted at a pitch of 33 mm to obtain a conductor having a cross-sectional area of 3.0 mm 2 and an outer diameter of 1.82 mm. This conductor was covered with an insulating layer made of cross-linked fluororubber (TFE-P) having a thickness of 0.42 mm to obtain an insulated wire having an outer diameter of 3.4 mm.

＜例６＞
直径０．３２ｍｍの錫メッキ軟銅線を撚りピッチ３４ｍｍで４１本撚り合わせ、断面積が３．０ｍｍ２で外径１．８２ｍｍの導体を得た。この導体に、厚み０．４２ｍｍの架橋フッ素ゴム（ＦＫＭ）からなる絶縁層を引き落としにより被覆し、外径３．４ｍｍの絶縁電線を得た。 <Example 6>
A tin-plated annealed copper wire having a diameter of 0.32 mm was twisted and twisted at a twist pitch of 34 mm to obtain a conductor having a cross-sectional area of 3.0 mm 2 and an outer diameter of 1.82 mm. This conductor was covered with an insulating layer made of cross-linked fluororubber (FKM) having a thickness of 0.42 mm to obtain an insulated wire having an outer diameter of 3.4 mm.

＜例７＞
直径０．３２ｍｍの錫メッキ軟銅線を撚りピッチ４５ｍｍで４１本撚り合わせ、断面積が３．０ｍｍ２で外径１．８２ｍｍの導体を得た。この導体に、厚み０．４２ｍｍの架橋フッ素ゴム（ＴＦＥ−Ｐ）からなる絶縁層を引き落としにより被覆し、外径３．４ｍｍの絶縁電線を得た。 <Example 7>
Forty-one tin plated annealed copper wires having a diameter of 0.32 mm were twisted and twisted at a pitch of 45 mm to obtain a conductor having a cross-sectional area of 3.0 mm 2 and an outer diameter of 1.82 mm. This conductor was covered with an insulating layer made of cross-linked fluororubber (TFE-P) having a thickness of 0.42 mm to obtain an insulated wire having an outer diameter of 3.4 mm.

（エアリーク試験）
上記絶縁電線を長さ２００ｍｍに切断した試料の片端末に０．０４９ＭＰａの空気圧をかけ、１０分間で試料の他端末から漏出した空気の量（エアリーク量）を測定した。測定されたエアリーク量を２０で除して得られた結果を下記表１に示す。 (Air leak test)
An air pressure of 0.049 MPa was applied to one end of a sample obtained by cutting the insulated wire into a length of 200 mm, and the amount of air leaked from the other end of the sample in 10 minutes (air leak amount) was measured. The results obtained by dividing the measured air leak amount by 20 are shown in Table 1 below.

Figure 2017204409
Figure 2017204409

＜例１〜例７の比較＞
断面積が２．０ｍｍ２の絶縁電線において、Ｐが２４〜２８の範囲にある例１，２，３は、例４と比較してエアリークが少ないことが確認された。
また、断面積が３．０ｍｍ２の絶縁電線において、Ｐが２４〜２８の範囲にある例５，６は、例７と比較してエアリークが少ないことが確認された。 <Comparison of Examples 1 to 7>
In the insulated wire having a cross-sectional area of 2.0 mm 2 , Examples 1, 2, and 3 having P in the range of 24 to 28 were confirmed to have less air leak than Example 4.
In addition, it was confirmed that Examples 5 and 6 in which P is in the range of 24 to 28 in the insulated wire having a cross-sectional area of 3.0 mm 2 have less air leak than Example 7.

１，１０１ 絶縁電線
１０，１１０ 導体
１１，１１ａ 導体素線
２０ 絶縁層 1,101 Insulated wire 10,110 Conductor 11, 11a Conductor wire 20 Insulating layer

Claims (5)

導体素線が複数本撚り合わされた導体の外周に、絶縁層が形成された絶縁電線であって、
前記絶縁層が、フッ素樹脂、フッ素を含むゴムまたはそれらの混合物を含み、
前記導体の撚りピッチ（ｍｍ）×導体素線径（ｍｍ）×√導体素線数（本）／導体径（ｍｍ）が２４以上２８以下である、
絶縁電線。 An insulated wire in which an insulating layer is formed on the outer periphery of a conductor in which a plurality of conductor strands are stranded,
The insulating layer includes a fluororesin, a fluorine-containing rubber, or a mixture thereof;
The conductor twist pitch (mm) × conductor wire diameter (mm) × √number of conductor wires (lines) / conductor diameter (mm) is from 24 to 28,
Insulated wire. 前記導体の断面積が２ｍｍ２以上である、請求項１に記載の絶縁電線。 The insulated wire according to claim 1, wherein a cross-sectional area of the conductor is 2 mm 2 or more. 前記導体が圧縮されている、請求項１又は請求項２に記載の絶縁電線。   The insulated wire according to claim 1 or 2, wherein the conductor is compressed. 前記絶縁層がフッ素を含むゴムを含む請求項１〜請求項３のいずれか一項に記載の絶縁電線。   The insulated wire according to any one of claims 1 to 3, wherein the insulating layer includes rubber containing fluorine. 前記絶縁層がテトラフルオロエチレン・プロピレン共重合体を含む、請求項４に記載の絶縁電線。   The insulated wire according to claim 4, wherein the insulating layer contains a tetrafluoroethylene / propylene copolymer.
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