WO2022208691A1 - Lead wire - Google Patents

Lead wire Download PDF

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Publication number
WO2022208691A1
WO2022208691A1 PCT/JP2021/013673 JP2021013673W WO2022208691A1 WO 2022208691 A1 WO2022208691 A1 WO 2022208691A1 JP 2021013673 W JP2021013673 W JP 2021013673W WO 2022208691 A1 WO2022208691 A1 WO 2022208691A1
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WO
WIPO (PCT)
Prior art keywords
lead wire
flexible member
conductor
lead
insulating paper
Prior art date
Application number
PCT/JP2021/013673
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French (fr)
Japanese (ja)
Inventor
啓介 鈴木
隆彦 石倉
Original Assignee
三菱電機株式会社
Priority date (The priority date 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 date listed.)
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2021550262A priority Critical patent/JP7284282B2/en
Priority to PCT/JP2021/013673 priority patent/WO2022208691A1/en
Publication of WO2022208691A1 publication Critical patent/WO2022208691A1/en

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    • 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
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables

Definitions

  • This disclosure relates to lead wires.
  • a lead wire is described in Japanese Utility Model Laid-Open No. 59-3507 (Patent Document 1).
  • the lead wire described in Patent Document 1 has a plurality of copper wires and insulating paper. Each of the plurality of copper strands extends along the extending direction of the lead wire. An insulating paper is wound around the plurality of copper strands. As a result, the plurality of copper strands are bundled and the insulation of the plurality of copper strands is ensured.
  • the present disclosure is made in view of the problems of the prior art as described above. More specifically, the present disclosure provides a lead wire capable of suppressing deterioration in dielectric strength when bending is applied.
  • the lead wire of the present disclosure bundles the plurality of conductor strands by covering the plurality of conductor strands extending along the extension direction of the lead wire and the plurality of conductor strands by covering the periphery of the plurality of conductor strands. It comprises a flexible member and insulating paper surrounding the flexible member.
  • the lead wire of the present disclosure it is possible to suppress a decrease in dielectric strength when bending is applied.
  • FIG. 1 is a perspective view of a lead wire 100;
  • FIG. 2 is a perspective view of the lead wire 100 with insulation paper 30 omitted.
  • FIG. 2 is a cross-sectional view of lead wire 100.
  • FIG. 3 is a partially enlarged view of FIG. 2;
  • FIG. It is a perspective view of lead wire 200A.
  • It is a sectional view of lead wire 200A.
  • FIG. 4 is a cross-sectional view of the lead wire 200A when bending is applied;
  • FIG. 10 is a perspective view of a lead wire 200B; It is a sectional view of lead wire 200B.
  • 3 is a cross-sectional view of lead wire 300.
  • FIG. 4 is a cross-sectional view of lead wire 400.
  • FIG. 3 is a perspective view of a lead wire 500 with insulating paper 30 omitted.
  • FIG. 5 is a cross-sectional view of lead wire 500.
  • FIG. 3 is a perspective view of a lead wire 500
  • Embodiment 1 A lead wire according to Embodiment 1 (hereinafter, the lead wire according to Embodiment 1 is referred to as “lead wire 100”) will be described.
  • FIG. 1 is a perspective view of the lead wire 100.
  • FIG. FIG. 2 is a perspective view of the lead wire 100 with the insulating paper 30 omitted.
  • FIG. 3 is a cross-sectional view of the lead wire 100. As shown in FIG. FIG. 3 shows a cross section of the lead wire 100 orthogonal to the extending direction of the lead wire 100.
  • FIG. 4 is a partially enlarged view of FIG. 2; As shown in FIGS. 1 to 4, lead wire 100 includes a plurality of conductor wires 10, flexible member 20, and insulating paper 30.
  • FIG. 1 is a perspective view of the lead wire 100.
  • FIG. FIG. 2 is a perspective view of the lead wire 100 with the insulating paper 30 omitted.
  • FIG. 3 is a cross-sectional view of the lead wire 100. As shown in FIG. FIG. 3 shows a cross section of the lead wire 100 orthogonal to the extending direction of the lead wire 100.
  • FIG. 4 is a partially enlarged view of FIG. 2
  • the lead wire 100 is used, for example, to connect coils of an oil-filled transformer or to connect a coil of an oil-filled transformer and a bushing. That is, the lead wire 100 is used while being impregnated with oil.
  • the conductor wire 10 extends along the extending direction of the lead wire 100 .
  • the conductor wire 10 has, for example, a circular shape in a cross-sectional view perpendicular to the extending direction of the lead wire 100 .
  • the conductor wire 10 is made of a conductive material.
  • a conductive material is, for example, a metal material.
  • a specific example of the metal material forming the conductor wire 10 is copper or a copper alloy.
  • the flexible member 20 is a member made of a flexible (elastic) material.
  • the flexible member 20 is arranged around the plurality of conductor strands 10 . Thereby, the plurality of conductor strands 10 are bundled by the flexible member 20 .
  • the flexible member 20 is a sheet-like member. More specifically, the flexible member 20 is strip-shaped with a length greater than its width.
  • the flexible member 20 is wound around the plurality of conductor wires 10, for example. More specifically, the flexible member 20 is wound such that the winding position of the flexible member 20 shifts along the extending direction of the lead wire 100 for each turn. From another point of view, the flexible member 20 is spirally wound around the plurality of conductor strands 10 .
  • a portion of the flexible member 20 is called a first portion 21 .
  • Another portion of the flexible member 20 is referred to as a second portion 22 .
  • the first portion 21 and the second portion 22 are adjacent to each other in the extending direction of the lead wire 100 while the flexible member 20 is wound around the plurality of conductor wires 10 .
  • the flexible member 20 is preferably wound around the plurality of conductor wires 10 so that there is a space between the first portion 21 and the second portion 22 in the extending direction of the lead wire 100 .
  • the flexible member 20 is wound around the plurality of conductor strands 10 so that the first portion 21 and the second portion 22 do not overlap each other in the extending direction of the lead wire 100. It is preferable that However, the flexible member 20 may be wound around the plurality of conductor wires 10 so that the first portion 21 and the second portion 22 partially overlap each other in the extending direction of the lead wire 100 .
  • the flexible member 20 is made of rubber, for example. However, the material forming the flexible member 20 is not limited to this.
  • the insulating paper 30 covers the periphery of the flexible member 20 . More specifically, the insulating paper 30 is strip-shaped, and is wound around the flexible member 20 so that the position where the insulating paper 30 is wound is shifted along the extending direction of the lead wire 100 for each turn. It is The insulating paper 30 is, for example, crepe paper. The insulating paper 30 may be kraft paper. By covering the periphery of the flexible member 20 with the insulating paper 30, insulation for the plurality of conductor wires 10 is ensured.
  • FIG. 5 is a perspective view of the lead wire 200A.
  • FIG. 6 is a cross-sectional view of lead wire 200A.
  • FIG. 6 shows a cross section of the lead wire 200A orthogonal to the extending direction of the lead wire 200A.
  • the lead wire 200A has a plurality of conductor wires 10 and insulating paper 30.
  • Insulating paper 30 is wound around a plurality of conductor wires 10 in lead wire 200A. That is, in the lead wire 200 ⁇ /b>A, the plurality of conductor wires 10 are bundled by the insulating paper 30 wound around the plurality of conductor wires 10 .
  • FIG. 7 is a cross-sectional view of the lead wire 200A when bending is applied.
  • the binding force for the plurality of conductor wires 10 is low. Therefore, as shown in FIG. 7, in the lead wire 200A, a part of the plurality of conductor strands 10 protrudes from the rest of the plurality of conductor strands 10 when bending is applied. Since an electric field is concentrated on the projecting portion, the dielectric strength of the lead wire 200A is lowered when the lead wire 200A is bent.
  • FIG. 8 is a perspective view of the lead wire 200B.
  • FIG. 9 is a cross-sectional view of lead wire 200B.
  • FIG. 9 shows a cross section of the lead wire 200B orthogonal to the extending direction of the lead wire 200B.
  • the lead wire 200B has a plurality of conductor wires 10, insulating paper 30, and insulating paper 40.
  • a plurality of conductor wires 10 are bundled by winding insulating paper 40 around the plurality of conductor wires 10 .
  • a high tension is applied to the insulating paper 40 when it is wound around the plurality of conductor strands 10 .
  • the insulating paper 40 is covered with the insulating paper 30 .
  • the insulating paper 40 is wound around the plurality of conductor wires 10 with high tension, so the binding force for the plurality of conductor wires 10 is high. Therefore, in the lead wire 200B, it is difficult for some of the plurality of conductor strands 10 to protrude from the remaining portions of the plurality of conductor strands 10 when bending is applied. However, in the lead wire 200B, the insulating paper 40 is wound around the plurality of conductor wires 10 with high tension, so that the insulating paper 40 is likely to break when bending is applied. When the insulating paper 40 breaks, the dielectric strength of the lead wire 200B is lowered.
  • the dielectric strength of both the lead wire 200A and the lead wire 200B is lowered when bending is applied.
  • the binding force for the plurality of conductor wires 10 is high. Therefore, in the lead wire 100, it is difficult for a part of the plurality of conductor strands 10 to protrude from the rest of the plurality of conductor strands 10 when bending is applied. In addition, when the lead wire 100 is bent, the flexible member 20 is deformable so as to follow the bending of the lead wire 100, so the flexible member 20 is less likely to break. Therefore, according to the lead wire 100, compared with the lead wire 200A and the lead wire 200B, it is possible to suppress a decrease in dielectric strength when bending is applied.
  • the oil is It easily permeates to the periphery of the conductor wire 10 through the gap between the first portion 21 and the second portion 22 .
  • the conductor strands 10 are easily cooled, and the diameter of the conductor strands 10 is increased and the number of the plurality of conductor strands 10 is increased in order to reduce the electrical resistance value and the heat generation amount. It is no longer necessary to
  • Embodiment 2 A lead wire according to Embodiment 2 (hereinafter, the lead wire according to Embodiment 2 is referred to as “lead wire 300”) will be described. Here, points different from the lead wire 100 will be mainly described, and redundant description will not be repeated.
  • FIG. 10 is a cross-sectional view of the lead wire 300.
  • FIG. FIG. 10 shows a cross section of lead wire 300 perpendicular to the extending direction of lead wire 300 .
  • lead wire 300 has a plurality of conductor wires 10 , flexible member 20 and insulating paper 30 .
  • the flexible member 20 is wound around the plurality of conductor strands 10 .
  • the configuration of lead wire 300 is common to the configuration of lead wire 100 .
  • the flexible member 20 is mesh-like. That is, in the lead wire 300 , the flexible member 20 is formed with a plurality of through holes 23 passing through the flexible member 20 along the thickness direction. In this regard, the configuration of lead 300 differs from that of lead 100 .
  • the flexible member 20 has a mesh shape (through holes 23 are formed in the flexible member 20). Therefore, in the lead wire 300 , oil easily permeates to the periphery of the conductor wire 10 through the through hole 23 . As a result, in the lead wire 300, the conductor strand 10 is easily cooled, and in order to reduce the electrical resistance value and the heat generation amount, the diameter of the conductor strand 10 is increased and the number of the plurality of conductor strands 10 is increased. It is no longer necessary to
  • Embodiment 3 A lead wire according to Embodiment 3 (hereinafter, the lead wire according to Embodiment 3 is referred to as “lead wire 400”) will be described. Here, points different from the lead wire 100 will be mainly described, and redundant description will not be repeated.
  • FIG. 11 is a cross-sectional view of the lead wire 400.
  • FIG. FIG. 11 shows a cross section of lead wire 400 perpendicular to the extending direction of lead wire 400 .
  • lead wire 400 has a plurality of conductor wires 10 , flexible member 20 and insulating paper 30 .
  • the flexible member 20 is wound around the plurality of conductor strands 10 .
  • the configuration of lead wire 400 is common to the configuration of lead wire 100 .
  • the lead wire 400 further has a plurality of conductive particles 50.
  • a plurality of conductive particles 50 are disposed within the flexible member 20 .
  • the conductive particles 50 are, for example, powder or filler made of metal material. In these respects, the configuration of lead 400 differs from that of lead 100 .
  • the lead wire 400 since the conductive particles 50 are arranged inside the flexible member 20 , the flexible member 20 covering the plurality of conductor wires 10 is imparted with conductivity. As a result, according to the lead wire 400 , the plurality of conductor wires 10 and the flexible member 20 are electrically connected, so that the electric field on the surface of the conductor wires 10 can be alleviated.
  • Embodiment 4 A lead wire according to Embodiment 4 (hereinafter, the lead wire according to Embodiment 4 is referred to as "lead wire 500") will be described. Here, points different from the lead wire 100 will be mainly described, and redundant description will not be repeated.
  • FIG. 12 is a perspective view of the lead wire 500 with the insulating paper 30 omitted. In FIG. 12, illustration of the through hole 23 is omitted.
  • FIG. 13 is a cross-sectional view of lead wire 500 .
  • FIG. 13 shows a cross section of lead wire 500 perpendicular to the extending direction of lead wire 500 .
  • the lead wire 500 has a plurality of conductor wires 10, flexible members 20, and insulating paper 30.
  • the flexible member 20 surrounds the plurality of conductor strands 10 .
  • the configuration of lead 500 is common to the configuration of lead 100 .
  • the flexible member 20 is a tubular member extending along the extending direction of the lead wire 500 .
  • the plurality of conductor strands 10 are bundled by being arranged inside the flexible member 20 .
  • the flexible member 20 is formed with a plurality of through holes 23 passing through the flexible member 20 along the thickness direction. In these respects, the configuration of lead 500 differs from that of lead 100 .
  • the binding force for the plurality of conductor wires 10 is high.
  • the flexible member 20 is deformable so as to follow the bending of the lead wire 500, so the flexible member 20 is unlikely to break. Therefore, according to the lead wire 500, similarly to the lead wire 100, it is possible to suppress a decrease in dielectric strength when bending is applied.

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  • Coils Of Transformers For General Uses (AREA)

Abstract

This lead wire (100) is provided with a plurality of conductor strands (10) extending along an extension direction of the lead wire, a flexible member (20) that bundles the plurality of conductor strands together by surrounding the plurality of conductor strands, and an insulating paper (30) surrounding the flexible member. This lead wire enables suppression of a decrease in dielectric strength when the wire is bent.

Description

リード線Lead
　本開示は、リード線に関する。 This disclosure relates to lead wires.
　実開昭５９－３５０７号公報（特許文献１）には、リード線が記載されている。特許文献１に記載のリード線は、複数の銅素線と、絶縁紙とを有している。複数の銅素線の各々は、リード線の延在方向に沿って延在している。絶縁紙は、複数の銅素線の周囲に巻回されている。これにより、複数の銅素線が束ねられるとともに、複数の銅素線に対する絶縁が確保されている。 A lead wire is described in Japanese Utility Model Laid-Open No. 59-3507 (Patent Document 1). The lead wire described in Patent Document 1 has a plurality of copper wires and insulating paper. Each of the plurality of copper strands extends along the extending direction of the lead wire. An insulating paper is wound around the plurality of copper strands. As a result, the plurality of copper strands are bundled and the insulation of the plurality of copper strands is ensured.
実開昭５９－３５０７号公報Japanese Utility Model Laid-Open No. 59-3507
　特許文献１のリード線では、曲げが加わった際に、断面形状が楕円形状になる又は複数の銅素線の一部が複数の銅素線の残部から突出する等により、リード線の絶縁耐力が低下するおそれがある。 In the lead wire of Patent Document 1, when bending is applied, the cross-sectional shape becomes elliptical, or a part of the plurality of copper strands protrudes from the rest of the plurality of copper strands. may decrease.
　本開示は、上記のような従来技術の問題点に鑑みたものである。より具体的には、本開示は、曲げが加わった際に絶縁耐力が低下することを抑制可能なリード線を提供する。 The present disclosure is made in view of the problems of the prior art as described above. More specifically, the present disclosure provides a lead wire capable of suppressing deterioration in dielectric strength when bending is applied.
　本開示のリード線は、リード線の延在方向に沿って延在している複数の導体素線と、複数の導体素線の周囲を覆っていることにより複数の導体素線を束ねている可撓部材と、可撓部材の周囲を覆っている絶縁紙とを備えている。 The lead wire of the present disclosure bundles the plurality of conductor strands by covering the plurality of conductor strands extending along the extension direction of the lead wire and the plurality of conductor strands by covering the periphery of the plurality of conductor strands. It comprises a flexible member and insulating paper surrounding the flexible member.
　本開示のリード線によると、曲げが加わった際に絶縁耐力が低下することを抑制可能である。 According to the lead wire of the present disclosure, it is possible to suppress a decrease in dielectric strength when bending is applied.
リード線１００の斜視図である。1 is a perspective view of a lead wire 100; FIG. 絶縁紙３０の図示が省略されたリード線１００の斜視図である。2 is a perspective view of the lead wire 100 with insulation paper 30 omitted. FIG. リード線１００の断面図である。2 is a cross-sectional view of lead wire 100. FIG. 図２の部分的な拡大図である。3 is a partially enlarged view of FIG. 2; FIG. リード線２００Ａの斜視図である。It is a perspective view of lead wire 200A. リード線２００Ａの断面図である。It is a sectional view of lead wire 200A. 曲げが加わった際のリード線２００Ａの断面図である。FIG. 4 is a cross-sectional view of the lead wire 200A when bending is applied; リード線２００Ｂの斜視図である。FIG. 10 is a perspective view of a lead wire 200B; リード線２００Ｂの断面図である。It is a sectional view of lead wire 200B. リード線３００の断面図である。3 is a cross-sectional view of lead wire 300. FIG. リード線４００の断面図である。4 is a cross-sectional view of lead wire 400. FIG. 絶縁紙３０の図示が省略されたリード線５００の斜視図である。3 is a perspective view of a lead wire 500 with insulating paper 30 omitted. FIG. リード線５００の断面図である。5 is a cross-sectional view of lead wire 500. FIG.
　本開示の実施形態の詳細を、図面を参照しながら説明する。以下の図面では、同一又は相当する部分に同一の参照符号を付し、重複する説明は繰り返さないものとする。 Details of embodiments of the present disclosure will be described with reference to the drawings. In the drawings below, the same or corresponding parts are denoted by the same reference numerals, and redundant description will not be repeated.
　実施の形態１．
　実施の形態１に係るリード線（以下においては、実施の形態１に係るリード線を「リード線１００」とする）を説明する。 Embodiment 1.
A lead wire according to Embodiment 1 (hereinafter, the lead wire according to Embodiment 1 is referred to as “lead wire 100”) will be described.
　（リード線１００の構成）
　以下に、リード線１００の構成を説明する。 (Configuration of lead wire 100)
The configuration of the lead wire 100 will be described below.
　図１は、リード線１００の斜視図である。図２は、絶縁紙３０の図示が省略されたリード線１００の斜視図である。図３は、リード線１００の断面図である。図３には、リード線１００の延在方向に直交するリード線１００の断面が示されている。図４は、図２の部分的な拡大図である。図１～図４に示されるように、リード線１００は、複数の導体素線１０と、可撓部材２０と、絶縁紙３０とを有している。 FIG. 1 is a perspective view of the lead wire 100. FIG. FIG. 2 is a perspective view of the lead wire 100 with the insulating paper 30 omitted. FIG. 3 is a cross-sectional view of the lead wire 100. As shown in FIG. FIG. 3 shows a cross section of the lead wire 100 orthogonal to the extending direction of the lead wire 100. As shown in FIG. FIG. 4 is a partially enlarged view of FIG. 2; As shown in FIGS. 1 to 4, lead wire 100 includes a plurality of conductor wires 10, flexible member 20, and insulating paper 30. FIG.
　リード線１００は、例えば、油入変圧器のコイル同士を接続するため又は油入変圧器のコイルとブッシングとを接続するために使用される。すなわち、リード線１００は、油が含浸された状態で使用される。 The lead wire 100 is used, for example, to connect coils of an oil-filled transformer or to connect a coil of an oil-filled transformer and a bushing. That is, the lead wire 100 is used while being impregnated with oil.
　導体素線１０は、リード線１００の延在方向に沿って延在している。導体素線１０は、リード線１００の延在方向に直交する断面視において、例えば円形である。導体素線１０は、導電材料により形成されている。導電材料は、例えば金属材料である。導体素線１０を構成している金属材料の具体例としては、銅又は銅合金が挙げられる。 The conductor wire 10 extends along the extending direction of the lead wire 100 . The conductor wire 10 has, for example, a circular shape in a cross-sectional view perpendicular to the extending direction of the lead wire 100 . The conductor wire 10 is made of a conductive material. A conductive material is, for example, a metal material. A specific example of the metal material forming the conductor wire 10 is copper or a copper alloy.
　可撓部材２０は、可撓性（伸縮性）のある材料で形成された部材である。可撓部材２０は、複数の導体素線１０の周囲に配置されている。これにより、複数の導体素線１０が、可撓部材２０により束ねられている。 The flexible member 20 is a member made of a flexible (elastic) material. The flexible member 20 is arranged around the plurality of conductor strands 10 . Thereby, the plurality of conductor strands 10 are bundled by the flexible member 20 .
　可撓部材２０は、シート状の部材である。より具体的には、可撓部材２０は、幅に対して長さが大きい帯状である。可撓部材２０は、例えば、複数の導体素線１０の周囲に巻回されている。より具体的には、可撓部材２０は、周回ごとに可撓部材２０の巻回される位置がリード線１００の延在方向に沿ってずれるように巻回されている。このことを別の観点から言えば、可撓部材２０は、複数の導体素線１０の周囲に螺旋状に巻回されている。 The flexible member 20 is a sheet-like member. More specifically, the flexible member 20 is strip-shaped with a length greater than its width. The flexible member 20 is wound around the plurality of conductor wires 10, for example. More specifically, the flexible member 20 is wound such that the winding position of the flexible member 20 shifts along the extending direction of the lead wire 100 for each turn. From another point of view, the flexible member 20 is spirally wound around the plurality of conductor strands 10 .
　可撓部材２０の一部を、第１部分２１とする。可撓部材２０の他の一部を、第２部分２２とする。第１部分２１及び第２部分２２は、可撓部材２０が複数の導体素線１０の周囲に巻回されている状態で、リード線１００の延在方向において、互いに隣り合っている。可撓部材２０は、リード線１００の延在方向において第１部分２１と第２部分２２との間に間隔が空くように複数の導体素線１０の周囲に巻回されていることが好ましい。このことを別の観点から言えば、可撓部材２０は、リード線１００の延在方向において第１部分２１及び第２部分２２が互いに重ならないように複数の導体素線１０の周囲に巻回されていることが好ましい。但し、可撓部材２０は、リード線１００の延在方向において第１部分２１及び第２部分２２が互いに部分的に重なるように複数の導体素線１０の周囲に巻回されていてもよい。 A portion of the flexible member 20 is called a first portion 21 . Another portion of the flexible member 20 is referred to as a second portion 22 . The first portion 21 and the second portion 22 are adjacent to each other in the extending direction of the lead wire 100 while the flexible member 20 is wound around the plurality of conductor wires 10 . The flexible member 20 is preferably wound around the plurality of conductor wires 10 so that there is a space between the first portion 21 and the second portion 22 in the extending direction of the lead wire 100 . From another point of view, the flexible member 20 is wound around the plurality of conductor strands 10 so that the first portion 21 and the second portion 22 do not overlap each other in the extending direction of the lead wire 100. It is preferable that However, the flexible member 20 may be wound around the plurality of conductor wires 10 so that the first portion 21 and the second portion 22 partially overlap each other in the extending direction of the lead wire 100 .
　可撓部材２０は、例えば、ゴムにより形成されている。但し、可撓部材２０を構成している材料は、これに限られない。 The flexible member 20 is made of rubber, for example. However, the material forming the flexible member 20 is not limited to this.
　絶縁紙３０は、可撓部材２０の周囲を覆っている。より具体的には、絶縁紙３０は、帯状であり、周回ごとに絶縁紙３０が巻回される位置がリード線１００の延在方向に沿ってずれるように可撓部材２０の周囲に巻回されている。絶縁紙３０は、例えば、クレープ紙である。絶縁紙３０は、クラフト紙であってもよい。絶縁紙３０が可撓部材２０の周囲を覆っていることにより、複数の導体素線１０に対する絶縁が確保されている。 The insulating paper 30 covers the periphery of the flexible member 20 . More specifically, the insulating paper 30 is strip-shaped, and is wound around the flexible member 20 so that the position where the insulating paper 30 is wound is shifted along the extending direction of the lead wire 100 for each turn. It is The insulating paper 30 is, for example, crepe paper. The insulating paper 30 may be kraft paper. By covering the periphery of the flexible member 20 with the insulating paper 30, insulation for the plurality of conductor wires 10 is ensured.
　（リード線１００の効果）
　以下に、リード線１００の効果を、比較例に係るリード線と対比しながら説明する。 (Effect of lead wire 100)
The effect of the lead wire 100 will be described below in comparison with the lead wire according to the comparative example.
　第１比較例に係るリード線を、「リード線２００Ａ」とする。図５は、リード線２００Ａの斜視図である。図６は、リード線２００Ａの断面図である。図６には、リード線２００Ａの延在方向に直交するリード線２００Ａの断面が示されている。図５及び図６に示されるように、リード線２００Ａは、複数の導体素線１０と、絶縁紙３０とを有している。リード線２００Ａでは、絶縁紙３０が、複数の導体素線１０の周囲に巻回されている。すなわち、リード線２００Ａでは、複数の導体素線１０が、複数の導体素線１０の周囲に巻回されている絶縁紙３０により束ねられている。 The lead wire according to the first comparative example is referred to as "lead wire 200A". FIG. 5 is a perspective view of the lead wire 200A. FIG. 6 is a cross-sectional view of lead wire 200A. FIG. 6 shows a cross section of the lead wire 200A orthogonal to the extending direction of the lead wire 200A. As shown in FIGS. 5 and 6, the lead wire 200A has a plurality of conductor wires 10 and insulating paper 30. As shown in FIGS. Insulating paper 30 is wound around a plurality of conductor wires 10 in lead wire 200A. That is, in the lead wire 200</b>A, the plurality of conductor wires 10 are bundled by the insulating paper 30 wound around the plurality of conductor wires 10 .
　図７は、曲げが加わった際のリード線２００Ａの断面図である。リード線２００Ａでは複数の導体素線１０が絶縁紙３０により束ねられているため、複数の導体素線１０に対する結束力が低い。そのため、図７に示されるように、リード線２００Ａでは、曲げが加わった際に、複数の導体素線１０の一部が複数の導体素線１０の残部から突出する。この突出部には電界集中が生じるため、リード線２００Ａは、曲げが加わった際に絶縁耐力が低下することになる。 FIG. 7 is a cross-sectional view of the lead wire 200A when bending is applied. In the lead wire 200A, since the plurality of conductor wires 10 are bundled with the insulating paper 30, the binding force for the plurality of conductor wires 10 is low. Therefore, as shown in FIG. 7, in the lead wire 200A, a part of the plurality of conductor strands 10 protrudes from the rest of the plurality of conductor strands 10 when bending is applied. Since an electric field is concentrated on the projecting portion, the dielectric strength of the lead wire 200A is lowered when the lead wire 200A is bent.
　第２比較例に係るリード線を、「リード線２００Ｂ」とする。図８は、リード線２００Ｂの斜視図である。図９は、リード線２００Ｂの断面図である。図９には、リード線２００Ｂの延在方向に直交するリード線２００Ｂの断面が示されている。図８及び図９に示されるように、リード線２００Ｂは、複数の導体素線１０と、絶縁紙３０と、絶縁紙４０とを有している。リード線２００Ｂでは、複数の導体素線１０が、複数の導体素線１０の周囲に絶縁紙４０が巻回されることにより束ねられている。絶縁紙４０には、複数の導体素線１０の周囲に巻回される際に、高い張力が加えられている。リード線２００Ｂでは、絶縁紙４０の周囲が、絶縁紙３０により覆われている。 The lead wire according to the second comparative example is referred to as "lead wire 200B". FIG. 8 is a perspective view of the lead wire 200B. FIG. 9 is a cross-sectional view of lead wire 200B. FIG. 9 shows a cross section of the lead wire 200B orthogonal to the extending direction of the lead wire 200B. As shown in FIGS. 8 and 9, the lead wire 200B has a plurality of conductor wires 10, insulating paper 30, and insulating paper 40. As shown in FIGS. In the lead wire 200</b>B, a plurality of conductor wires 10 are bundled by winding insulating paper 40 around the plurality of conductor wires 10 . A high tension is applied to the insulating paper 40 when it is wound around the plurality of conductor strands 10 . In the lead wire 200</b>B, the insulating paper 40 is covered with the insulating paper 30 .
　リード線２００Ｂでは、高い張力で絶縁紙４０が複数の導体素線１０の周囲に巻回されているため、複数の導体素線１０に対する結束力が高くなっている。そのため、リード線２００Ｂでは、曲げが加わった際に、複数の導体素線１０の一部が複数の導体素線１０の残部から突出しがたい。しかしながら、リード線２００Ｂでは、高い張力で絶縁紙４０が複数の導体素線１０の周囲に巻回されているため、曲げが加わった際に、絶縁紙４０が破断しやすい。絶縁紙４０が破断すると、リード線２００Ｂの絶縁耐力が低下する。 In the lead wire 200B, the insulating paper 40 is wound around the plurality of conductor wires 10 with high tension, so the binding force for the plurality of conductor wires 10 is high. Therefore, in the lead wire 200B, it is difficult for some of the plurality of conductor strands 10 to protrude from the remaining portions of the plurality of conductor strands 10 when bending is applied. However, in the lead wire 200B, the insulating paper 40 is wound around the plurality of conductor wires 10 with high tension, so that the insulating paper 40 is likely to break when bending is applied. When the insulating paper 40 breaks, the dielectric strength of the lead wire 200B is lowered.
　以上のように、リード線２００Ａ及びリード線２００Ｂのいずれも、曲げが加わった際に絶縁耐力が低下してしまう。 As described above, the dielectric strength of both the lead wire 200A and the lead wire 200B is lowered when bending is applied.
　他方で、リード線１００では、複数の導体素線１０が可撓部材２０を巻回することにより束ねられているため、複数の導体素線１０に対する結束力が高い。そのため、リード線１００では、曲げが加わった際に複数の導体素線１０の一部が複数の導体素線１０の残部から突出しがたい。また、リード線１００では、曲げが加わった際に可撓部材２０がリード線１００の曲がりに追従するように変形可能であるため、可撓部材２０に破断が生じがたい。そのため、リード線１００によると、リード線２００Ａ及びリード線２００Ｂと比較して、曲げが加わった際の絶縁耐力の低下を抑制可能である。 On the other hand, in the lead wire 100, since the plurality of conductor wires 10 are bundled by winding the flexible member 20, the binding force for the plurality of conductor wires 10 is high. Therefore, in the lead wire 100, it is difficult for a part of the plurality of conductor strands 10 to protrude from the rest of the plurality of conductor strands 10 when bending is applied. In addition, when the lead wire 100 is bent, the flexible member 20 is deformable so as to follow the bending of the lead wire 100, so the flexible member 20 is less likely to break. Therefore, according to the lead wire 100, compared with the lead wire 200A and the lead wire 200B, it is possible to suppress a decrease in dielectric strength when bending is applied.
　可撓部材２０が複数の導体素線１０の周囲に巻回されることにより複数の導体素線１０の周囲を覆っている場合、長さの異なるリード線１００に容易に対応することができる。 When the flexible member 20 is wound around the plurality of conductor strands 10 to cover the plurality of conductor strands 10, lead wires 100 having different lengths can be easily accommodated.
　リード線１００の延在方向において第１部分２１と第２部分２２との間に間隔が空くように可撓部材２０が複数の導体素線１０の周囲に巻回されている場合、油が第１部分２１と第２部分２２との間の隙間を通って導体素線１０の周囲まで浸透しやすい。その結果、この場合には、導体素線１０が冷却されやすく、電気抵抗値を減らして発熱量を下げるために導体素線１０の径を大きくすること及び複数の導体素線１０の数を増加させることが不要となる。 When the flexible member 20 is wound around the plurality of conductor wires 10 so that there is a space between the first portion 21 and the second portion 22 in the extending direction of the lead wire 100, the oil is It easily permeates to the periphery of the conductor wire 10 through the gap between the first portion 21 and the second portion 22 . As a result, in this case, the conductor strands 10 are easily cooled, and the diameter of the conductor strands 10 is increased and the number of the plurality of conductor strands 10 is increased in order to reduce the electrical resistance value and the heat generation amount. It is no longer necessary to
　実施の形態２．
　実施の形態２に係るリード線（以下においては、実施の形態２に係るリード線を「リード線３００」とする）を説明する。ここでは、リード線１００と異なる点を主に説明し、重複する説明は繰り返さないものとする。 Embodiment 2.
A lead wire according to Embodiment 2 (hereinafter, the lead wire according to Embodiment 2 is referred to as “lead wire 300”) will be described. Here, points different from the lead wire 100 will be mainly described, and redundant description will not be repeated.
　（リード線３００の構成）
　以下に、リード線３００の構成を説明する。 (Configuration of lead wire 300)
The configuration of the lead wire 300 will be described below.
　図１０は、リード線３００の断面図である。図１０には、リード線３００の延在方向に直交するリード線３００の断面が示されている。図１０に示されるように、リード線３００は、複数の導体素線１０と、可撓部材２０と、絶縁紙３０とを有している。可撓部材２０は、複数の導体素線１０の周囲に巻回されている。これらの点に関して、リード線３００の構成は、リード線１００の構成と共通している。 10 is a cross-sectional view of the lead wire 300. FIG. FIG. 10 shows a cross section of lead wire 300 perpendicular to the extending direction of lead wire 300 . As shown in FIG. 10 , lead wire 300 has a plurality of conductor wires 10 , flexible member 20 and insulating paper 30 . The flexible member 20 is wound around the plurality of conductor strands 10 . With respect to these points, the configuration of lead wire 300 is common to the configuration of lead wire 100 .
　しかしながら、リード線３００では、可撓部材２０がメッシュ状である。すなわち、リード線３００では、可撓部材２０に、可撓部材２０を厚さ方向に沿って貫通している複数の貫通穴２３が形成されている。この点に関して、リード線３００の構成は、リード線１００の構成と異なっている。 However, in the lead wire 300, the flexible member 20 is mesh-like. That is, in the lead wire 300 , the flexible member 20 is formed with a plurality of through holes 23 passing through the flexible member 20 along the thickness direction. In this regard, the configuration of lead 300 differs from that of lead 100 .
　（リード線３００の効果）
　以下に、リード線３００の効果を説明する。 (Effect of lead wire 300)
The effect of the lead wire 300 will be described below.
　リード線３００では、可撓部材２０がメッシュ状になっている（可撓部材２０に貫通穴２３が形成されている）。そのため、リード線３００では、油が貫通穴２３を通って導体素線１０の周囲まで浸透しやすい。その結果、リード線３００では、導体素線１０が冷却されやすく、電気抵抗値を減らして発熱量を下げるために導体素線１０の径を大きくすること及び複数の導体素線１０の数を増加させることが不要となる。 In the lead wire 300, the flexible member 20 has a mesh shape (through holes 23 are formed in the flexible member 20). Therefore, in the lead wire 300 , oil easily permeates to the periphery of the conductor wire 10 through the through hole 23 . As a result, in the lead wire 300, the conductor strand 10 is easily cooled, and in order to reduce the electrical resistance value and the heat generation amount, the diameter of the conductor strand 10 is increased and the number of the plurality of conductor strands 10 is increased. It is no longer necessary to
　実施の形態３．
　実施の形態３に係るリード線（以下においては、実施の形態３に係るリード線を「リード線４００」とする）を説明する。ここでは、リード線１００と異なる点を主に説明し、重複する説明は繰り返さないものとする。 Embodiment 3.
A lead wire according to Embodiment 3 (hereinafter, the lead wire according to Embodiment 3 is referred to as “lead wire 400”) will be described. Here, points different from the lead wire 100 will be mainly described, and redundant description will not be repeated.
　（リード線４００の構成）
　以下に、リード線４００の構成を説明する。 (Configuration of lead wire 400)
The configuration of the lead wire 400 will be described below.
　図１１は、リード線４００の断面図である。図１１には、リード線４００の延在方向に直交するリード線４００の断面が示されている。図１１に示されるように、リード線４００は、複数の導体素線１０と、可撓部材２０と、絶縁紙３０とを有している。可撓部材２０は、複数の導体素線１０の周囲に巻回されている。これらの点に関して、リード線４００の構成は、リード線１００の構成と共通している。 11 is a cross-sectional view of the lead wire 400. FIG. FIG. 11 shows a cross section of lead wire 400 perpendicular to the extending direction of lead wire 400 . As shown in FIG. 11 , lead wire 400 has a plurality of conductor wires 10 , flexible member 20 and insulating paper 30 . The flexible member 20 is wound around the plurality of conductor strands 10 . With respect to these points, the configuration of lead wire 400 is common to the configuration of lead wire 100 .
　しかしながら、リード線４００は、複数の導電粒子５０をさらに有している。複数の導電粒子５０は、可撓部材２０内に配置されている。導電粒子５０は、例えば、金属材料製の粉末又はフィラーである。これらの点に関して、リード線４００の構成は、リード線１００の構成と異なっている。 However, the lead wire 400 further has a plurality of conductive particles 50. A plurality of conductive particles 50 are disposed within the flexible member 20 . The conductive particles 50 are, for example, powder or filler made of metal material. In these respects, the configuration of lead 400 differs from that of lead 100 .
　（リード線４００の効果）
　以下に、リード線４００の効果を説明する。 (Effect of lead wire 400)
The effect of the lead wire 400 will be described below.
　リード線４００では、可撓部材２０内に導電粒子５０が配置されているため、複数の導体素線１０の周囲を覆っている可撓部材２０に導電性が付与されている。その結果、リード線４００によると、複数の導体素線１０と可撓部材２０とが導通することにより、導体素線１０の表面における電界を緩和することができる。 In the lead wire 400 , since the conductive particles 50 are arranged inside the flexible member 20 , the flexible member 20 covering the plurality of conductor wires 10 is imparted with conductivity. As a result, according to the lead wire 400 , the plurality of conductor wires 10 and the flexible member 20 are electrically connected, so that the electric field on the surface of the conductor wires 10 can be alleviated.
　実施の形態４．
　実施の形態４に係るリード線（以下においては、実施の形態４に係るリード線を「リード線５００」とする）を説明する。ここでは、リード線１００と異なる点を主に説明し、重複する説明は繰り返さないものとする。 Embodiment 4.
A lead wire according to Embodiment 4 (hereinafter, the lead wire according to Embodiment 4 is referred to as "lead wire 500") will be described. Here, points different from the lead wire 100 will be mainly described, and redundant description will not be repeated.
　（リード線５００の構成）
　以下に、リード線５００の構成を説明する。 (Configuration of lead wire 500)
The configuration of the lead wire 500 will be described below.
　図１２は、絶縁紙３０の図示が省略されたリード線５００の斜視図である。図１２中では、貫通穴２３の図示が省略されている。図１３は、リード線５００の断面図である。図１３には、リード線５００の延在方向に直交するリード線５００の断面が示されている。図１２及び図１３に示されるように、リード線５００は、複数の導体素線１０と、可撓部材２０と、絶縁紙３０とを有している。可撓部材２０は、複数の導体素線１０の周囲を覆っている。これらの点に関して、リード線５００の構成は、リード線１００の構成と共通している。 FIG. 12 is a perspective view of the lead wire 500 with the insulating paper 30 omitted. In FIG. 12, illustration of the through hole 23 is omitted. FIG. 13 is a cross-sectional view of lead wire 500 . FIG. 13 shows a cross section of lead wire 500 perpendicular to the extending direction of lead wire 500 . As shown in FIGS. 12 and 13, the lead wire 500 has a plurality of conductor wires 10, flexible members 20, and insulating paper 30. As shown in FIGS. The flexible member 20 surrounds the plurality of conductor strands 10 . Regarding these points, the configuration of lead 500 is common to the configuration of lead 100 .
　しかしながら、リード線５００では、可撓部材２０が、リード線５００の延在方向に沿って延在している筒状の部材である。複数の導体素線１０は、可撓部材２０の内側に配置されることにより束ねられている。可撓部材２０には、可撓部材２０を厚さ方向に沿って貫通されている複数の貫通穴２３が形成されている。これらの点に関して、リード線５００の構成は、リード線１００の構成と異なっている。 However, in the lead wire 500 , the flexible member 20 is a tubular member extending along the extending direction of the lead wire 500 . The plurality of conductor strands 10 are bundled by being arranged inside the flexible member 20 . The flexible member 20 is formed with a plurality of through holes 23 passing through the flexible member 20 along the thickness direction. In these respects, the configuration of lead 500 differs from that of lead 100 .
　（リード線５００の効果）
　以下に、リード線５００の効果を説明する。 (Effect of lead wire 500)
The effect of the lead wire 500 will be described below.
　リード線５００では、複数の導体素線１０が可撓部材２０の内側に配置されることにより束ねられているため、複数の導体素線１０に対する結束力が高い。また、リード線５００では、曲げが加わった際に可撓部材２０がリード線５００の曲がりに追従するように変形可能であるため、可撓部材２０に破断が生じがたい。そのため、リード線５００によると、リード線１００と同様に、曲げが加わった際の絶縁耐力の低下を抑制可能である。 In the lead wire 500, since the plurality of conductor wires 10 are arranged inside the flexible member 20 and bundled, the binding force for the plurality of conductor wires 10 is high. In addition, when the lead wire 500 is bent, the flexible member 20 is deformable so as to follow the bending of the lead wire 500, so the flexible member 20 is unlikely to break. Therefore, according to the lead wire 500, similarly to the lead wire 100, it is possible to suppress a decrease in dielectric strength when bending is applied.
　今回開示された実施の形態は全ての点で例示であり、制限的なものではないと考えられるべきである。本開示の基本的な範囲は、上記の実施の形態ではなく、請求の範囲によって示され、請求の範囲と均等の意味及び範囲内での全ての変更が含まれることが意図される。 The embodiments disclosed this time are illustrative in all respects and should be considered not restrictive. The basic scope of the present disclosure is indicated by the scope of claims rather than the above embodiments, and is intended to include all modifications within the meaning and scope of equivalence to the scope of claims.
　１００　リード線、１０　導体素線、２０　可撓部材、２１　第１部分、２２　第２部分、２３　貫通穴、３０　絶縁紙、４０　絶縁紙、５０　導電粒子、２００Ａ，２００Ｂ，３００，４００，５００　リード線。 100 lead wire, 10 conductor element wire, 20 flexible member, 21 first part, 22 second part, 23 through hole, 30 insulating paper, 40 insulating paper, 50 conductive particles, 200A, 200B, 300, 400, 500 leads line.

Claims (7)

  1. 　リード線であって、
    　前記リード線の延在方向に沿って延在している複数の導体素線と、
    　前記複数の導体素線の周囲を覆っていることにより前記複数の導体素線を束ねている可撓部材と、
    　前記可撓部材の周囲を覆っている絶縁紙とを備える、リード線。     a lead wire,
    a plurality of conductor strands extending along the extension direction of the lead;
    a flexible member that bundles the plurality of conductor strands by covering the periphery of the plurality of conductor strands;
    and insulating paper surrounding the flexible member.
  2. 　前記可撓部材は、シート状の部材であり、
    　前記可撓部材は、周回ごとに前記可撓部材の巻回される位置が前記リード線の延在方向に沿ってずれるように前記複数の導体素線の周囲に巻回されている、請求項１に記載のリード線。     The flexible member is a sheet-like member,
    3. The flexible member is wound around the plurality of conductor wires such that the position where the flexible member is wound shifts along the extending direction of the lead wire for each turn. 1. The lead wire according to 1.
  3. 　前記可撓部材は、前記複数の導体素線の周囲に巻回された状態で前記リード線の延在方向において隣り合っている第１部分及び第２部分を有し、
    　前記リード線の延在方向において、前記第１部分及び前記第２部分との間には、間隔が空いている、請求項２に記載のリード線。     The flexible member has a first portion and a second portion which are wound around the plurality of conductor strands and are adjacent to each other in the extending direction of the lead wire,
    3. The lead wire according to claim 2, wherein there is a space between said first portion and said second portion in the extending direction of said lead wire.
  4. 　前記可撓部材には、前記可撓部材を厚さ方向に沿って貫通している貫通穴が形成されている、請求項２又は請求項３に記載のリード線。 The lead wire according to claim 2 or 3, wherein the flexible member is formed with a through hole passing through the flexible member along the thickness direction.
  5. 　前記可撓部材は、前記リード線の延在方向に沿って延在している筒状の部材であり、
    　前記可撓部材には、前記可撓部材を厚さ方向に沿って貫通している貫通穴が形成されている、請求項１に記載のリード線。     The flexible member is a tubular member extending along the extending direction of the lead wire,
    2. The lead wire according to claim 1, wherein the flexible member has a through hole extending through the flexible member in the thickness direction.
  6. 　前記可撓部材は、ゴムにより形成されている、請求項１～請求項５のいずれか１項に記載のリード線。 The lead wire according to any one of claims 1 to 5, wherein the flexible member is made of rubber.
  7. 　導電粒子をさらに備え、
    　前記導電粒子は、前記可撓部材内に配置されている、請求項１～請求項６のいずれか１項に記載のリード線。     further comprising conductive particles,
    A lead according to any preceding claim, wherein the conductive particles are disposed within the flexible member.
PCT/JP2021/013673 2021-03-30 2021-03-30 Lead wire WO2022208691A1 (en)

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Citations (4)

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JPS5123905Y1 (en) * 1974-03-27 1976-06-18
JPS5819423U (en) * 1981-07-31 1983-02-05 日本電信電話株式会社 Creep resistant coaxial cable
JPS58173115U (en) * 1982-05-14 1983-11-19 古河電気工業株式会社 Transposed wire
JP2010108843A (en) * 2008-10-31 2010-05-13 Hitachi Cable Ltd Insulation-coated electric wire

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JPS5126778Y2 (en) * 1971-04-21 1976-07-07
JPS5542308U (en) * 1978-09-11 1980-03-18
JPS61142603A (en) * 1984-12-15 1986-06-30 株式会社フジクラ Electric insulation oil and power cable using the same
JPH0565017U (en) * 1992-02-06 1993-08-27 昭和電線電纜株式会社 Water cooling cable conductor entry jig
JP4725972B2 (en) 2006-08-10 2011-07-13 サミー株式会社 Bullet ball machine
JP5542308B2 (en) 2008-02-29 2014-07-09 三洋電機株式会社 Hydrogen storage alloy electrode, method for producing hydrogen storage alloy electrode, and alkaline storage battery
ITPD20100221A1 (en) 2010-07-15 2012-01-16 Meccanica Breganzese S P A SCREENING BUCKET
JP6901946B2 (en) * 2017-09-25 2021-07-14 矢崎総業株式会社 Water-stop connection structure for electric wires and water-stop connection method for electric wires

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5123905Y1 (en) * 1974-03-27 1976-06-18
JPS5819423U (en) * 1981-07-31 1983-02-05 日本電信電話株式会社 Creep resistant coaxial cable
JPS58173115U (en) * 1982-05-14 1983-11-19 古河電気工業株式会社 Transposed wire
JP2010108843A (en) * 2008-10-31 2010-05-13 Hitachi Cable Ltd Insulation-coated electric wire

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JPWO2022208691A1 (en) 2022-10-06

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