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WO2011024262A1 - Electric cable - Google Patents

Electric cable Download PDF

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Publication number
WO2011024262A1
WO2011024262A1 PCT/JP2009/064840 JP2009064840W WO2011024262A1 WO 2011024262 A1 WO2011024262 A1 WO 2011024262A1 JP 2009064840 W JP2009064840 W JP 2009064840W WO 2011024262 A1 WO2011024262 A1 WO 2011024262A1
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WO
WIPO (PCT)
Prior art keywords
return
conductor
electric cable
outer periphery
conductors
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.)
Ceased
Application number
PCT/JP2009/064840
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French (fr)
Japanese (ja)
Inventor
直毅 谷口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taiyo Cabletec Corp
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Taiyo Cabletec Corp
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Filing date
Publication date
Application filed by Taiyo Cabletec Corp filed Critical Taiyo Cabletec Corp
Priority to PCT/JP2009/064840 priority Critical patent/WO2011024262A1/en
Publication of WO2011024262A1 publication Critical patent/WO2011024262A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/006—Constructional features relating to the conductors
    • 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
    • H01B7/1895—Internal space filling-up means

Definitions

  • the present invention relates to an electric cable for transmitting DC or single-phase AC power or an electric signal.
  • FIG. 5 (a) is a perspective view of a section of a conventional electric cable, (b) is a front view of (a), and (c). These are explanatory drawings at the time of observing the magnetic flux density at a position away from the conventional electric cable by the distance R.
  • An electric cable 100 shown in FIG. 5 has a pair of core wires 101 and 102 having a substantially circular cross section arranged in parallel and twisted at an appropriate pitch, and the entire outer sides of the pair of core wires 101 and 102 are made of PVC (polyvinyl chloride). ) Wrapped and covered with a jacket 103 made of resin, fluorine resin or the like.
  • the core wire 101 is configured such that the forward conductor 101a made of metal or the like and the outer periphery of the forward conductor 101a are covered with a forward insulating layer 101b made of a rubber-based material.
  • the core wire 102 is configured such that a return conductor 102a made of metal or the like and an outer periphery of the return conductor 102a are covered with a return insulating layer 102b made of a rubber-based material.
  • a forward current (positive or negative current) flows through the forward conductor 101a in the direction of the left arrow shown in FIG. 5A, and the return conductor 102a passes through FIG. ) In the direction of the right arrow shown in FIG. Then, a magnetic flux is generated in the electric cable 100, and the magnetic flux leaks to the outside.
  • the distance from the center position of the electrical cable 100 to the observation point TP is R
  • the distance from the center position of the electrical cable 100 to the center position of the forward conductor 101a is a
  • the return conductor 102a from the center position of the electrical cable 100 is further defined.
  • a be the distance to the center position.
  • the magnetic flux density B shown in Formula (1) is generated at the observation point TP.
  • ⁇ represents magnetic permeability
  • ⁇ represents circumferential ratio.
  • an object of the present invention is to efficiently suppress magnetic flux leaking from an electric cable to the outside.
  • the electric cables 1 and 20 of the invention according to claim 1 have a forward conductor 2 at the center, and the forward conductor. 2 is provided with a plurality of return conductors 3 on concentric circles so as to be in contact with the outer periphery of the forward insulation layer 2a, and a non-magnetic material is provided at every required interval between the return conductors 3.
  • the flexible inclusion 4 is arrange
  • the electric cables 10 and 20 according to claim 2 have a forward conductor 2 in the center, an outer insulating layer 2a on the outer periphery of the outer conductor 2, and at least two concentric circles on the outer periphery of the outer insulating layer 2a.
  • EN1 and EN2 are provided with a plurality of return conductors 3, and nonmagnetic and flexible inclusions 4 are provided in the plurality of gaps S1 and S2 provided between the return conductors 3. It is characterized by.
  • the electric cable 30 according to claim 3 has a nonmagnetic and flexible inclusion 4 in the center, a concentric circle on the outer periphery of the inclusion 4, and a forward insulating layer 31a on the outer periphery. And a plurality of return conductors 32 each having a return insulation layer 32a on the outer periphery.
  • the electrical cable according to claim 4 is the electrical cable according to claim 1 or 2, wherein each of the return conductors 3 has a return insulating layer 3a on the outer periphery thereof.
  • the electrical cable according to claim 5 is the electrical cable according to claim 1 or 2, wherein the cross-sectional area of each return conductor 3 is obtained by dividing the cross-sectional area of the forward conductor 2 by the total number of the return conductors 3, respectively. It is characterized by the above.
  • the electrical cable according to claim 6 is the electrical cable according to claim 1 or 2, wherein each of the return conductors 3 is provided so as to be movable along the outer periphery of the outward insulation layer 2a.
  • the electrical cable according to claim 7 is the electrical cable according to claim 6, wherein each of the return conductors 3 is formed with a diameter smaller than that of the forward conductor 2.
  • the electrical cable according to an eighth aspect is the electrical cable according to the third aspect, wherein each of the forward conductors 31 and each of the return conductors 32 is provided so as to be movable along the outer periphery of the inclusion 4. It is characterized by becoming.
  • the electrical cable according to claim 9 is the electrical cable according to claim 8, wherein each of the forward conductors 31 and each of the return conductors 32 is formed to have a diameter smaller than that of the inclusion 4.
  • An electrical cable according to a tenth aspect is the electrical cable according to any one of the first to third aspects, wherein the inclusion 4 is made of at least one material selected from a cotton blend and a PP yarn (PP: polypropylene). It is formed.
  • the inclusion 4 is made of at least one material selected from a cotton blend and a PP yarn (PP: polypropylene). It is formed.
  • the forward conductor 2 is provided at the center, and a plurality of circular return conductors 3 are concentrically arranged so as to be in contact with the outer periphery of the forward conductor 2.
  • the magnetic flux generated by the current flowing through the return conductor 3 virtually generates a magnetic flux close to the magnetic flux generated by the current flowing through the forward conductor 2, and the magnetic fluxes cancel each other efficiently. Therefore, the magnetic flux leaking from the electric cable to the outside can be efficiently suppressed.
  • the inclusions 4 are arranged at required intervals between the return conductors 3, the relative positions of the return conductors 3 can be held. For this reason, even if the entire electric cable is bent, the relative position remains slightly changed. Therefore, even if the entire electric cable is bent, the loss of the effect of reducing the magnetic flux leaking from the electric cable to the outside due to the bending can be minimized.
  • the forward conductor 2 is provided at the center, and the outward insulation layer 2a is provided on the outer periphery of the forward conductor 2, Since a plurality of return conductors 3 are arranged on at least two concentric circles on the outer periphery of the outward insulation layer 2a, each of the plurality of return conductors 3 arranged on a concentric circle closest to the outer circumference of the outward insulation layer 2a is provided. Even if the magnetic flux generated by the flowing return current leaks slightly from between the return conductors 3, the return current that flows in each of the plurality of return conductors 3 arranged on the outer concentric circle on the nearest concentric circle. Is suppressed by the magnetic flux generated by.
  • the magnetic fluxes generated by the currents flowing in the forward conductor 2 and the return conductor 3 can be canceled with higher accuracy than in the first aspect of the invention, the magnetic flux leaks from the electric cable to the outside. Can be suppressed more efficiently.
  • the magnetic fluxes generated from the adjacent forward conductors 31 and the return conductors 32 cancel each other. It becomes. Therefore, the magnetic flux leaking from the electric cable to the outside can be efficiently suppressed.
  • the flexible inclusion 4 is provided at the center, the relative positions of the forward conductors 31 and the return conductors 32 can be maintained. Therefore, the same effect as that of the first aspect of the invention can be obtained.
  • the return conductor 3 since the return conductor 3 has the return insulating layer 3a on the outer periphery, the electric cable is used in a place where there is no ground potential, and a high voltage is applied to the return conductor 3. It is possible to prevent the electric cable from being damaged.
  • the cross-sectional area of each return conductor 3 is a value obtained by dividing the cross-sectional area of each forward conductor 2 by the total number of each return conductor 3.
  • the amount of the return conductor 3 can be designed to a minimum.
  • each return conductor 3 is provided so as to be movable along the outer periphery of the outward insulation layer 2a, each return conductor 3 is twisted. Thus, the magnetic flux leaking from the electric cable to the outside can be reduced.
  • each return conductor 3 is formed with a diameter smaller than that of the forward conductor 2, the twist pitch of the return conductor 3 can be narrowed. It becomes possible, and the effect which reduces the magnetic flux which leaks from the electric cable by twist to the exterior can be exhibited more.
  • each of the outward conductors 31 and each of the return conductors 32 is provided so as to be movable along the outer periphery of the inclusion 4.
  • the conductor 31 and the return conductor 32 can be twisted together, and the magnetic flux leaking from the electric cable to the outside can be reduced.
  • each of the forward conductors 31 and each of the return conductors 32 is formed with a diameter smaller than that of the inclusion 4, the twist pitch can be narrowed. The effect of reducing the magnetic flux leaking from the electric cable due to twisting to the outside can be further exhibited.
  • the inclusion 4 is made of at least one material of cotton blend and PP yarn (PP: polypropylene). Since it has resilience, the effect of maintaining the relative position of each return conductor 3 can be maintained even if the entire electric cable is bent many times.
  • FIG. 1 is a cross-sectional view of an electric cable according to the first embodiment of the present invention.
  • the electric cable 1 has a circular outward path conductor 2 at the center, and a plurality of circular return conductors 3 (four in the figure) and inclusions 4 on a concentric circle so as to be in contact with the outer periphery of the outward path conductor 2. (4 in the figure) are alternately arranged, and the entire outer periphery of the return conductor 3 and the inclusion 4 is wrapped and covered with a jacket 5 made of PVC (polyvinyl chloride) resin, fluorine resin, or the like. .
  • PVC polyvinyl chloride
  • the forward conductor 2 is made of metal or the like, and has an outer periphery covered with an outward insulating layer 2a made of a rubber-based material.
  • the return conductor 3 is made of a metal or the like, and has an outer periphery covered with a return insulating layer 3a made of a rubber-based material. Thus, if the outer periphery of the return conductor 3 is covered with the return insulation layer 3a, the electric cable 1 is used in a place where there is no ground potential, and the electric cable 1 is damaged even if a high voltage is applied to the return conductor 3. There is no such thing.
  • the return conductor 3 is provided so as to be movable along the outer periphery of the outward insulation layer 2 a and is formed with a diameter smaller than that of the outward conductor 2.
  • the cross-sectional area of the return conductor 3 is preferably set to a value obtained by dividing the cross-sectional area of the outward conductor 2 by the number of return conductors (four in the drawing). This is because the required amount of the return conductor 3 can be designed to a minimum.
  • the inclusion 4 is made of a cotton blend, PP yarn (PP: polypropylene), etc., and may be any material as long as it is flexible and non-magnetic. Furthermore, it is more preferable if the material has self-restoring properties.
  • the circular outward path conductor 2 is provided at the center, and a plurality of circular return conductors 3 are provided concentrically on the outer periphery of the outward path conductor 2.
  • the magnetic flux generated by the current flowing in each return conductor 3 virtually generates a magnetic flux close to the magnetic flux generated by the current flowing in the forward conductor 2, and the magnetic fluxes cancel each other efficiently. Therefore, the magnetic flux leaking from the electric cable 1 to the outside can be efficiently suppressed.
  • each return conductor 3 can be moved along the outer circumference of the outward insulation layer 2a, each return conductor 3 can be twisted. Magnetic flux leaking from the electric cable 1 to the outside can be reduced. Furthermore, since each return conductor 3 is formed with a diameter smaller than that of the outward conductor 2, the twist pitch of each return conductor 3 can be reduced, and the electric cable 1 by twisting is externally connected. The effect of reducing the magnetic flux leaking into the can be further exhibited.
  • each return conductor 3 was formed in diameter smaller than the outward conductor 2 respectively. Even if the entire electric cable 1 is bent in order to further exhibit the above-described effect, the relative positions of the return conductors 3 can be maintained. For this reason, even if the entire electric cable 1 is bent, the relative position remains slightly changed, and the magnetic flux leaking from the electric cable 1 to the outside due to the bending of the entire electric cable 1 is reduced. The loss of the effect to make can be suppressed to the minimum.
  • the inclusion 4 is formed of at least one material of cotton blend and PP yarn (PP: polypropylene), the inclusion 4 has self-restoring property, so that the entire electric cable 1 is bent several times. Even if added, the effect of maintaining the relative position of each return conductor 3 can be maintained.
  • a plurality of circular return conductors 3 and inclusions 4 are alternately arranged on a concentric circle so as to contact the outer circumference of the forward conductor 2.
  • the inclusion 4 may be included, or after three consecutive return conductors 3, the inclusion 4 may be included. That is, the return conductor 3 and the inclusion 4 may be arranged in any manner as long as the flexible inclusion 4 is arranged at every required interval between the return conductors 3 and 3.
  • FIG. 2 is a cross-sectional view of an electric cable according to the second embodiment of the present invention.
  • symbol is attached
  • the electric cable 10 has a forward conductor 2 in the center, and has an outward insulation layer 2a on the outer periphery of the outward conductor 2, at least two concentric circles on the outer periphery of the outward insulation layer 2a, and a return insulation layer on the outer periphery.
  • a plurality of return conductors 3 covering 3a are provided, and the entire outer periphery of each return insulation layer 3a is covered and covered with a jacket 5.
  • the electric cable 10 is a concentric circle (hereinafter referred to as first concentric circle EN1) so as to be in contact with the outer periphery of the outward insulation layer 2a, and the return conductor formed by covering the outer periphery with the return insulation layer 3a.
  • 3 (eight in the figure) are arranged, and the outer periphery of the return insulating layer 3a is concentrically (hereinafter referred to as the second concentric circle EN2) and the outer periphery of the return insulating layer 3a is covered.
  • a plurality of return conductors 3 are arranged.
  • the inclusions 4 are respectively disposed in a plurality of gaps S ⁇ b> 1 provided between the return conductors 3 that are provided on the second concentric circle EN ⁇ b> 2 and have the outer periphery covered with the return insulating layer 3 a.
  • the magnetic flux generated by the return current flowing in each of the plurality of return conductors 3 arranged on the first concentric circle EN1 is each return path. Even a slight leakage from between the conductors 3 is suppressed by the magnetic flux generated by the return current flowing in each of the plurality of return conductors 3 arranged on the second concentric circle EN2. For this reason, the magnetic flux generated by the current flowing in the forward conductor 2 is generated by the current flowing in each of the plurality of return conductors 3 arranged on the first concentric circle EN1 and the second concentric circle EN2. It is canceled with high accuracy by the magnetic flux.
  • the electric cable 10 can suppress the magnetic flux leaking to the outside more efficiently than the electric cable 1 according to the first embodiment of the present invention.
  • the inclusions 4 are provided in all the plurality of gaps S1 provided between the return conductors 3 that are arranged on the second concentric circle EN2 and whose outer periphery is covered with the return insulating layer 3a.
  • the inclusion 4 may be provided in a part of the gap S1.
  • the inclusions 4 are not provided in the plurality of gaps S2 provided between the return conductors 3 that are provided on the first concentric circle EN1 and whose outer periphery covers the return insulating layer 3a. Of course, it may be provided.
  • FIG. 3 is a cross-sectional view of an electric cable according to the third embodiment of the present invention.
  • symbol is attached
  • each of the outer circumferences of the plurality of return conductors 3 has a return insulating layer 3a. Since there is only a difference in whether or not there is a description, the description of the configuration is also omitted.
  • the return insulating layer 3a is not provided on each of the outer circumferences of the plurality of return conductors 3, the cost can be kept low.
  • the entire electric cable 20 can be made to have a small diameter.
  • the electric cable 20 can be used when the potential of the return conductor 3 is the same as the ground potential.
  • the electric cable 20 which concerns on this embodiment illustrated what does not have the return insulation layer 3a in the outer periphery of the return conductor 3 regarding the electric cable 1 which concerns on 1st Embodiment, of course, it is 2nd Embodiment.
  • the present invention can also be applied to the case where the return conductor 3 relating to the electric cable 10 does not have the return insulating layer 3a on the outer periphery.
  • FIG. 4 is a cross-sectional view of an electric cable according to the fourth embodiment of the present invention.
  • symbol is attached
  • the electric cable 30 has a flexible inclusion 4 in the center, and concentric circles so as to be in contact with the outer periphery of the inclusion 4, and a forward conductor 31 having a forward insulating layer 31a on the outer periphery, A plurality of return conductors 32 having return insulating layers 32a on the outer periphery are alternately arranged, and the entire outer periphery of each of the forward insulating layers 31a and each of the return insulating layers 32a is covered with a jacket 5 and configured.
  • the inclusions 4 are disposed in a plurality of gaps S3 provided between the forward insulation layers 31a and the return insulation layers 32a.
  • the forward conductor 31 is made of metal or the like, is provided so as to be movable along the outer periphery of the inclusion 4, and is smaller than the inclusion 4 (for example, if the outer diameter of the inclusion 4 is 8.1 mm, it is insulated). It is formed in about 5 mm including the layer. And the outer periphery of the outward path conductor 31 is coat
  • the return conductor 32 is made of metal or the like, is provided so as to be movable along the outer periphery of the inclusion 4, and has a smaller diameter than the inclusion 4 (for example, the outer diameter of the inclusion 4 is 8.1 mm, for example). (Including the insulating layer).
  • the outer periphery of the return conductor 32 is covered with a return insulating layer 32a made of, for example, a rubber-based material.
  • a plurality of the forward conductors 31 and the return conductors 32 are alternately arranged, and therefore, generated from the adjacent forward conductors 31 and the return conductors 32. Magnetic flux will cancel each other. Therefore, the magnetic flux leaking from the electric cable 30 to the outside can be efficiently suppressed.
  • each forward conductor 31 and each return conductor 32 are movably provided along the outer periphery of the inclusion 4, the pair of forward conductors 31 and the return conductors 32 can be twisted together. Thus, the magnetic flux leaking from the electric cable to the outside can be reduced.
  • each forward conductor 31 and each return conductor 32 are formed with a diameter smaller than that of the inclusion 4, the twist pitch can be narrowed, and leakage from the electric cable 30 due to twisting to the outside can be achieved. The effect which reduces the magnetic flux to perform can be exhibited more.
  • the electric cable 30 uses the flexible forward path conductor 31 and the return path conductor 32 with a small diameter, it has a high bending performance as a moving cable.
  • all of the inclusions 4 are disposed in the plurality of gaps S3 provided between each forward path insulating layer 31a and each return path insulating layer 32a, but intervened in some gaps S3.
  • the object 4 may be disposed or may not be disposed. However, it is preferable to arrange all the inclusions 4 in the plurality of gaps S3.
  • the conductor 31 and the return conductor 32 having a return insulating layer 32a on the outer periphery are shown as being alternately arranged, but outside each forward insulating layer 31a and each return insulating layer 32a, Further, a plurality of forward conductors 31 having the outward insulation layer 31a on the outer periphery and return conductors 32 having the return insulation layer 32a on the outer periphery may be alternately arranged.
  • the electric cables according to the first to fourth embodiments of the present invention described above are circular, but the shape is not limited to a circle, and the design can be changed to various shapes.
  • the electric cable according to the first to fourth embodiments of the present invention has flexibility, a cord, an elevator, a construction machine, a factory facility, It can be applied to cables used for charging electric vehicles.

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  • Insulated Conductors (AREA)

Abstract

An electric cable wherein leakage of magnetic flux to the outside is efficiently suppressed. An electric cable (1) is characterized by comprising an outward conductor (2) which is arranged in the center of the cable, an outward insulating layer (2a) formed around the outward conductor (2), a plurality of homeward conductors (3) which are concentrically arranged so as to be in contact with the outer circumferential periphery of the outward insulating layer (2a), and flexible intervening members (4) which are arranged among the homeward conductors (3) at necessary intervals.

Description

電気ケーブルElectric cable

　本発明は、直流もしくは単相の交流電力あるいは電気信号を伝送する電気ケーブルに関する。 The present invention relates to an electric cable for transmitting DC or single-phase AC power or an electric signal.

　従来、この種の電気ケーブルとしては、図５に示すものが知られている。この従来の電気ケーブルを図５に基づいて説明すると、図５の（ａ）は、従来の電気ケーブルの一部を断面にした斜視図、（ｂ）は（ａ）の正面図、（ｃ）は、従来の電気ケーブルから距離Ｒ離れた位置での磁束密度を観測した場合の説明図である。 Conventionally, as this type of electric cable, the one shown in FIG. 5 is known. This conventional electric cable will be described with reference to FIG. 5. FIG. 5 (a) is a perspective view of a section of a conventional electric cable, (b) is a front view of (a), and (c). These are explanatory drawings at the time of observing the magnetic flux density at a position away from the conventional electric cable by the distance R.

　図５に示す電気ケーブル１００は、一対の略円形断面の心線１０１，１０２を平行に並べ、適当なピッチで撚り合わせ、その一対の心線１０１，１０２の外側全体を、ＰＶＣ（ポリ塩化ビニル）樹脂、フッ素系樹脂等からなる外被１０３で包み覆って構成されている。 An electric cable 100 shown in FIG. 5 has a pair of core wires 101 and 102 having a substantially circular cross section arranged in parallel and twisted at an appropriate pitch, and the entire outer sides of the pair of core wires 101 and 102 are made of PVC (polyvinyl chloride). ) Wrapped and covered with a jacket 103 made of resin, fluorine resin or the like.

　心線１０１は、金属等からなる往路導体１０１ａと、その往路導体１０１ａの外周がゴム系材料からなる往路絶縁層１０１ｂで被覆されて構成されている。そして、心線１０２は、金属等からなる帰路導体１０２ａと、その帰路導体１０２ａの外周がゴム系材料からなる帰路絶縁層１０２ｂで被覆されて構成されている。 The core wire 101 is configured such that the forward conductor 101a made of metal or the like and the outer periphery of the forward conductor 101a are covered with a forward insulating layer 101b made of a rubber-based material. The core wire 102 is configured such that a return conductor 102a made of metal or the like and an outer periphery of the return conductor 102a are covered with a return insulating layer 102b made of a rubber-based material.

　このように構成された電気ケーブル１００は、往路導体１０１ａに、図５（ａ）に示す左矢印の向きに往路電流（正極又は負極の電流）が流され、帰路導体１０２ａに、図５（ａ）に示す右矢印の向きに帰路電流（往路電流と反極の電流）が流される。すると、電気ケーブル１００には、磁束が発生し、その磁束が外部へ漏洩する。 In the electric cable 100 configured in this manner, a forward current (positive or negative current) flows through the forward conductor 101a in the direction of the left arrow shown in FIG. 5A, and the return conductor 102a passes through FIG. ) In the direction of the right arrow shown in FIG. Then, a magnetic flux is generated in the electric cable 100, and the magnetic flux leaks to the outside.

　ここで、図５（ｃ）を用いて観測点ＴＰの磁束密度を説明する。 Here, the magnetic flux density at the observation point TP will be described with reference to FIG.

　電気ケーブル１００の中心位置から、観測点ＴＰまでの距離をＲとし、電気ケーブル１００の中心位置から往路導体１０１ａの中心位置までの距離をａとし、さらに、電気ケーブル１００の中心位置から帰路導体１０２ａの中心位置までの距離をａとする。そして、往路導体１０１ａに流れる往路電流を＋Ｉとし、帰路導体１０２ａに流れる帰路電流を－Ｉとすると、観測点ＴＰには、数式（１）に示す磁束密度Ｂが発生する。なお、μは透磁率を示し、πは円周率を示す。
（数１）
Ｂ＝Ｉ×μ×１／（２π×（Ｒ－ａ））－Ｉ×μ×１／（２π×（Ｒ＋ａ）） The distance from the center position of the electrical cable 100 to the observation point TP is R, the distance from the center position of the electrical cable 100 to the center position of the forward conductor 101a is a, and the return conductor 102a from the center position of the electrical cable 100 is further defined. Let a be the distance to the center position. When the forward current flowing in the forward conductor 101a is + I and the return current flowing in the return conductor 102a is -I, the magnetic flux density B shown in Formula (1) is generated at the observation point TP. Note that μ represents magnetic permeability, and π represents circumferential ratio.
(Equation 1)
B = I × μ × 1 / (2π × (R−a)) − I × μ × 1 / (2π × (R + a))

　数式（１）を簡略化するためＩを固定すると、μ，πは定数であるので、数式（１）は、数式（２）のように表わされる。
（数２）
Ｂ　∝　１／（Ｒ－ａ）－１／（Ｒ＋ａ） When I is fixed in order to simplify the formula (1), μ and π are constants, so the formula (1) is expressed as the formula (2).
(Equation 2)
B ∝ 1 / (R−a) −1 / (R + a)

　ここで、距離Ｒが長い場合として、数式（２）のＲを１００ａとすると、磁束密度Ｂは数式（３）のように表わされる。
（数３）
Ｂ　∝　１／９９ａ－１／１０１ａ＝１／９９９９ａ Here, assuming that the distance R is long and R in Equation (2) is 100a, the magnetic flux density B is expressed as Equation (3).
(Equation 3)
B １ ／ 1 / 99a-1 / 101a = 1 / 9999a

　また、距離Ｒが短い場合として、数式（２）のＲを２ａとすると、磁束密度Ｂは数式（４）のように表わされる。
（数４）
Ｂ　∝　１／ａ－１／３ａ＝２／３ａ Further, assuming that the distance R is short and R in Equation (2) is 2a, the magnetic flux density B is expressed as Equation (4).
(Equation 4)
B ∝ 1 / a-1 / 3a = 2 / 3a

　以上のことから、距離Ｒが長い場合は、数式（３）から分かるように、第１項（１／９９ａ）と第２項（１／１０１ａ）との差が小さいことから、往路導体１０１ａ，帰路導体１０２ａから発生する磁束同士が打ち消し合い、ごく僅かな磁束が外部へ漏洩していることが分かる。 From the above, when the distance R is long, as can be seen from Equation (3), the difference between the first term (1 / 99a) and the second term (1 / 101a) is small. It can be seen that the magnetic fluxes generated from the return conductor 102a cancel each other, and very little magnetic flux leaks to the outside.

　一方で、距離Ｒが短い場合は、数式（４）から分かるように、第１項（１／ａ）と第２項（１／３ａ）との差が大きいことから、強い磁束が外部へ漏洩していることが分かる。 On the other hand, when the distance R is short, as can be seen from the equation (4), the strong magnetic flux leaks to the outside because the difference between the first term (1 / a) and the second term (1 / 3a) is large. You can see that

　そのため、電気ケーブル１００の近傍に電子装置がある場合には、その電子装置の内部のプリントパターンと、電気ケーブル１００の近傍で発生する強い磁束とが錯交することにより、電子装置内に誘導電圧が混入して、電子装置の誤動作を誘発させるという問題があった。また、その近傍に通信制御ケーブルがある場合には、その近傍に発生する強い磁束により誘導電圧が発生し、通信に妨害を与えるという問題もあった。 Therefore, when there is an electronic device in the vicinity of the electric cable 100, an induced voltage is generated in the electronic device by interlacing a printed pattern inside the electronic device and a strong magnetic flux generated in the vicinity of the electric cable 100. There is a problem that the electronic device causes a malfunction of the electronic device. In addition, when there is a communication control cable in the vicinity, an induced voltage is generated by a strong magnetic flux generated in the vicinity of the communication control cable, and there is a problem that the communication is disturbed.

　また、大電流を要する機器を使用する場合（例えば、電気自動車の充電等）、強い磁束が発生すると、人体への影響が少なからずあるのではないかという問題もあった。 In addition, when using a device that requires a large current (for example, charging an electric vehicle), there is a problem that there is a considerable influence on the human body when a strong magnetic flux is generated.

　そこで、上記問題を解決すべく、電気ケーブル１００に磁性体を巻きつけて磁束の漏洩を磁性体内に閉じ込める電気ケーブルとすることが考えられる。しかしながら、上記問題を解決するような磁束に収束させようとすると透磁率が大きく非常に高価な磁性体を用いなければならず、さらには、電気ケーブル自体の可撓性を損なってしまうという問題があった。また、低周波もしくは直流に近い領域で十分な効果を得ようとした場合には、磁性体そのものを巨大にする必要があり、実用的ではないという問題もあった。 Therefore, in order to solve the above problem, it is conceivable to wrap a magnetic body around the electric cable 100 to make the electric cable confine the leakage of magnetic flux in the magnetic body. However, when trying to converge the magnetic flux so as to solve the above problem, it is necessary to use a very expensive magnetic material having a large magnetic permeability, and further, the flexibility of the electric cable itself is impaired. there were. In addition, when trying to obtain a sufficient effect in a low frequency or near DC region, it is necessary to make the magnetic material itself huge, which is not practical.

　一方、図５（ａ）に示す撚りピッチＰを幅狭にすることにより、電気ケーブル１００の磁束を減少させることも考えられるが、往路導体１０１ａ，帰路導体１０２ａの可撓性の制約から電気ケーブル１００の直径の十倍程度が限度となり、撚りの効果はおのずと限界がある。そのため、撚りピッチＰを幅狭にしただけでは、上述した問題を解決する磁束に収束させる効果はほとんどないという問題があった。 On the other hand, it is conceivable to reduce the magnetic flux of the electric cable 100 by narrowing the twist pitch P shown in FIG. 5A. However, the electric cable is limited by the flexibility of the forward conductor 101a and the return conductor 102a. The limit is about 10 times the diameter of 100, and the effect of twisting is naturally limited. For this reason, there is a problem that there is almost no effect of converging on the magnetic flux that solves the above-described problem by simply reducing the twist pitch P.

　本発明は、上記の問題点に鑑み、電気ケーブルから外部へ漏洩する磁束を効率的に抑制することを目的とする。 In view of the above problems, an object of the present invention is to efficiently suppress magnetic flux leaking from an electric cable to the outside.

　上記課題を解決するための手段を、後述する実施形態の参照符号を付して説明すると、請求項１に係る発明の電気ケーブル１，２０は、中心に往路導体２を有し、その往路導体２の外周に往路絶縁層２ａを有し、その往路絶縁層２ａの外周に接するように、同心円上に帰路導体３を複数有し、その各帰路導体３間の所要間隔おきに、非磁性体で且つ可撓性のある介在物４を配設してなることを特徴とする。 Means for solving the above problems will be described with reference numerals of the embodiments described later. The electric cables 1 and 20 of the invention according to claim 1 have a forward conductor 2 at the center, and the forward conductor. 2 is provided with a plurality of return conductors 3 on concentric circles so as to be in contact with the outer periphery of the forward insulation layer 2a, and a non-magnetic material is provided at every required interval between the return conductors 3. And the flexible inclusion 4 is arrange | positioned, It is characterized by the above-mentioned.

　請求項２に係る電気ケーブル１０，２０は、中心に往路導体２を有し、その往路導体２の外周に往路絶縁層２ａを有し、その往路絶縁層２ａの外周に、少なくとも２つの同心円上ＥＮ１，ＥＮ２に帰路導体３を複数配設してなり、前記各帰路導体３間に設けられる複数の隙間Ｓ１，Ｓ２には、非磁性体で且つ可撓性のある介在物４を配設してなることを特徴とする。 The electric cables 10 and 20 according to claim 2 have a forward conductor 2 in the center, an outer insulating layer 2a on the outer periphery of the outer conductor 2, and at least two concentric circles on the outer periphery of the outer insulating layer 2a. EN1 and EN2 are provided with a plurality of return conductors 3, and nonmagnetic and flexible inclusions 4 are provided in the plurality of gaps S1 and S2 provided between the return conductors 3. It is characterized by.

　請求項３に係る電気ケーブル３０は、中心に非磁性体で且つ可撓性のある介在物４を有し、その介在物４の外周に、同心円上に、外周に往路絶縁層３１ａを有してなる往路導体３１と、外周に帰路絶縁層３２ａを有してなる帰路導体３２とを、交互に複数配設してなることを特徴とする。 The electric cable 30 according to claim 3 has a nonmagnetic and flexible inclusion 4 in the center, a concentric circle on the outer periphery of the inclusion 4, and a forward insulating layer 31a on the outer periphery. And a plurality of return conductors 32 each having a return insulation layer 32a on the outer periphery.

　請求項４に係る電気ケーブルは、請求項１又は２に記載の電気ケーブルにおいて、前記各帰路導体３は、夫々、その外周に帰路絶縁層３ａを有してなることを特徴とする。 The electrical cable according to claim 4 is the electrical cable according to claim 1 or 2, wherein each of the return conductors 3 has a return insulating layer 3a on the outer periphery thereof.

　請求項５に係る電気ケーブルは、請求項１又は２に記載の電気ケーブルにおいて、前記各帰路導体３の断面積は、夫々、前記往路導体２の断面積を前記各帰路導体３の総数で除した値であることを特徴とする。 The electrical cable according to claim 5 is the electrical cable according to claim 1 or 2, wherein the cross-sectional area of each return conductor 3 is obtained by dividing the cross-sectional area of the forward conductor 2 by the total number of the return conductors 3, respectively. It is characterized by the above.

　請求項６に係る電気ケーブルは、請求項１又は２に記載の電気ケーブルにおいて、前記各帰路導体３は、夫々、前記往路絶縁層２ａの外周を沿うように移動可能に設けられてなることを特徴とする。 The electrical cable according to claim 6 is the electrical cable according to claim 1 or 2, wherein each of the return conductors 3 is provided so as to be movable along the outer periphery of the outward insulation layer 2a. Features.

　請求項７に係る電気ケーブルは、請求項６に記載の電気ケーブルにおいて、前記各帰路導体３は、夫々、前記往路導体２よりも細径に形成されてなることを特徴とする。 The electrical cable according to claim 7 is the electrical cable according to claim 6, wherein each of the return conductors 3 is formed with a diameter smaller than that of the forward conductor 2.

　請求項８に係る電気ケーブルは、請求項３に記載の電気ケーブルにおいて、前記各往路導体３１と前記各帰路導体３２は、夫々、前記介在物４の外周を沿うように移動可能に設けられてなることを特徴とする。 The electrical cable according to an eighth aspect is the electrical cable according to the third aspect, wherein each of the forward conductors 31 and each of the return conductors 32 is provided so as to be movable along the outer periphery of the inclusion 4. It is characterized by becoming.

　請求項９に係る電気ケーブルは、請求項８に記載の電気ケーブルにおいて、前記各往路導体３１と前記各帰路導体３２は、夫々、前記介在物４よりも細径に形成されてなることを特徴とする。 The electrical cable according to claim 9 is the electrical cable according to claim 8, wherein each of the forward conductors 31 and each of the return conductors 32 is formed to have a diameter smaller than that of the inclusion 4. And

　請求項１０に係る電気ケーブルは、請求項１～３のいずれかに記載の電気ケーブルにおいて、前記介在物４は、綿混紡物、ＰＰヤーン（ＰＰ：ポリプロピレン）のうち少なくともいずれか１つの材質で形成されてなることを特徴とする。 An electrical cable according to a tenth aspect is the electrical cable according to any one of the first to third aspects, wherein the inclusion 4 is made of at least one material selected from a cotton blend and a PP yarn (PP: polypropylene). It is formed.

　請求項１に係る発明の電気ケーブルによれば、中心に往路導体２を有し、その往路導体２の外周に接するように、同心円上に円形状の帰路導体３を複数有しているから、帰路導体３を流れる電流によって発生する磁束は、仮想的に、往路導体２に流れる電流によって発生する磁束に近い磁束を発生することとなり、磁束同士が効率的に打ち消し合うこととなる。それがために、電気ケーブルから外部へ漏洩する磁束を効率的に抑制することができる。 According to the electric cable of the invention of claim 1, the forward conductor 2 is provided at the center, and a plurality of circular return conductors 3 are concentrically arranged so as to be in contact with the outer periphery of the forward conductor 2. The magnetic flux generated by the current flowing through the return conductor 3 virtually generates a magnetic flux close to the magnetic flux generated by the current flowing through the forward conductor 2, and the magnetic fluxes cancel each other efficiently. Therefore, the magnetic flux leaking from the electric cable to the outside can be efficiently suppressed.

　また、本発明によれば、各帰路導体３間の所要間隔置きに、介在物４を配設しているから、各帰路導体３の相対的位置を保持させることができる。それがために、電気ケーブル全体に曲げが加わっても、相対的位置は、僅少な変化にとどまる。そのため、電気ケーブル全体に曲げが加わったとしても、その曲げによる、電気ケーブルから外部へ漏洩する磁束を軽減させる効果の損失を、最小限度に抑えることができる。 Further, according to the present invention, since the inclusions 4 are arranged at required intervals between the return conductors 3, the relative positions of the return conductors 3 can be held. For this reason, even if the entire electric cable is bent, the relative position remains slightly changed. Therefore, even if the entire electric cable is bent, the loss of the effect of reducing the magnetic flux leaking from the electric cable to the outside due to the bending can be minimized.

　請求項２に係る発明の電気ケーブルによれば、請求項１に記載の発明の効果に加え、中心に往路導体２を有し、その往路導体２の外周に往路絶縁層２ａを有し、その往路絶縁層２ａの外周に、少なくとも２つの同心円上に帰路導体３を複数配設してなるから、往路絶縁層２ａの外周に最も近い同心円上に配設されてなる複数の帰路導体３夫々に流れる帰路電流によって発生する磁束が、その各帰路導体３間から僅かに漏れ出したとしても、その最も近い同心円上の外側の同心円上に配設されてなる複数の帰路導体３夫々に流れる帰路電流によって発生する磁束によって抑止される。 According to the electric cable of the invention according to claim 2, in addition to the effect of the invention according to claim 1, the forward conductor 2 is provided at the center, and the outward insulation layer 2a is provided on the outer periphery of the forward conductor 2, Since a plurality of return conductors 3 are arranged on at least two concentric circles on the outer periphery of the outward insulation layer 2a, each of the plurality of return conductors 3 arranged on a concentric circle closest to the outer circumference of the outward insulation layer 2a is provided. Even if the magnetic flux generated by the flowing return current leaks slightly from between the return conductors 3, the return current that flows in each of the plurality of return conductors 3 arranged on the outer concentric circle on the nearest concentric circle. Is suppressed by the magnetic flux generated by.

　それがために、請求項１に記載の発明よりも、往路導体２，帰路導体３に流れる電流によって発生する磁束同士をより高い精度で打ち消し合うことができるため、電気ケーブルから外部へ漏洩する磁束をより効率的に抑制することができる。 Therefore, since the magnetic fluxes generated by the currents flowing in the forward conductor 2 and the return conductor 3 can be canceled with higher accuracy than in the first aspect of the invention, the magnetic flux leaks from the electric cable to the outside. Can be suppressed more efficiently.

　請求項３に係る発明の電気ケーブルによれば、往路導体３１と帰路導体３２とを交互に複数配設してなるから、隣接する往路導体３１，帰路導体３２から発生する磁束が夫々打ち消し合うこととなる。それがために、電気ケーブルから外部へ漏洩する磁束を効率的に抑制することができる。 According to the electric cable of the invention of claim 3, since the plurality of forward conductors 31 and the return conductors 32 are alternately arranged, the magnetic fluxes generated from the adjacent forward conductors 31 and the return conductors 32 cancel each other. It becomes. Therefore, the magnetic flux leaking from the electric cable to the outside can be efficiently suppressed.

　また、本発明によれば、中心に可撓性のある介在物４を有してなるから、各往路導体３１と各帰路導体３２の相対的位置を保持させることができる。それがために、請求項１に記載の発明と同様の効果を得ることができる。 Further, according to the present invention, since the flexible inclusion 4 is provided at the center, the relative positions of the forward conductors 31 and the return conductors 32 can be maintained. Therefore, the same effect as that of the first aspect of the invention can be obtained.

　請求項４に係る発明の電気ケーブルによれば、帰路導体３の外周に帰路絶縁層３ａを有してなるから、大地電位がない場所で電気ケーブルが使用され、帰路導体３に高電圧が印加されたことによる電気ケーブルの破損を防止することができる。 According to the electric cable of the invention of claim 4, since the return conductor 3 has the return insulating layer 3a on the outer periphery, the electric cable is used in a place where there is no ground potential, and a high voltage is applied to the return conductor 3. It is possible to prevent the electric cable from being damaged.

　請求項５に係る発明の電気ケーブルによれば、前記各帰路導体３の断面積は、夫々、前記往路導体２の断面積を前記各帰路導体３の総数で除した値であるから、必要な帰路導体３の量を最小に設計することができる。 According to the electric cable of the invention according to claim 5, the cross-sectional area of each return conductor 3 is a value obtained by dividing the cross-sectional area of each forward conductor 2 by the total number of each return conductor 3. The amount of the return conductor 3 can be designed to a minimum.

　請求項６に係る発明の電気ケーブルによれば、前記各帰路導体３は、夫々、前記往路絶縁層２ａの外周を沿うように移動可能に設けられてなるから、各帰路導体３を夫々撚ることが可能となり、電気ケーブルから外部へ漏洩する磁束を軽減させることができる。 According to the electric cable of the invention of claim 6, since each return conductor 3 is provided so as to be movable along the outer periphery of the outward insulation layer 2a, each return conductor 3 is twisted. Thus, the magnetic flux leaking from the electric cable to the outside can be reduced.

　請求項７に係る発明の電気ケーブルによれば、前記各帰路導体３は、夫々、前記往路導体２よりも細径に形成されてなるから、帰路導体３の撚りピッチを幅狭にすることが可能となり、撚りによる電気ケーブルから外部へ漏洩する磁束を軽減させる効果をより発揮させることができる。 According to the electric cable of the invention of claim 7, since each return conductor 3 is formed with a diameter smaller than that of the forward conductor 2, the twist pitch of the return conductor 3 can be narrowed. It becomes possible, and the effect which reduces the magnetic flux which leaks from the electric cable by twist to the exterior can be exhibited more.

　請求項８に係る発明の電気ケーブルによれば、前記各往路導体３１と前記各帰路導体３２は、夫々、前記介在物４の外周を沿うように移動可能に設けられてなるから、一対の往路導体３１と帰路導体３２を夫々撚り合わせることが可能となり、電気ケーブルから外部へ漏洩する磁束を軽減させることができる。 According to the electric cable of the invention according to claim 8, each of the outward conductors 31 and each of the return conductors 32 is provided so as to be movable along the outer periphery of the inclusion 4. The conductor 31 and the return conductor 32 can be twisted together, and the magnetic flux leaking from the electric cable to the outside can be reduced.

　請求項９に係る発明の電気ケーブルによれば、前記各往路導体３１と前記各帰路導体３２は介在物４よりも細径に形成されてなるから、撚りピッチを幅狭にすることが可能となり、撚りによる電気ケーブルから外部へ漏洩する磁束を軽減させる効果をより発揮させることができる。 According to the electric cable of the invention according to claim 9, since each of the forward conductors 31 and each of the return conductors 32 is formed with a diameter smaller than that of the inclusion 4, the twist pitch can be narrowed. The effect of reducing the magnetic flux leaking from the electric cable due to twisting to the outside can be further exhibited.

　請求項１０に係る発明の電気ケーブルによれば、前記介在物４は、綿混紡物、ＰＰヤーン（ＰＰ：ポリプロピレン）のうち少なくともいずれか１つの材質で形成されてなるから、介在物４は自己復元性を有するため、電気ケーブル全体に曲げが何度加わったとしても、各帰路導体３の相対的位置を保持させるという効果を持続させることができる。 According to the electric cable of the invention of claim 10, the inclusion 4 is made of at least one material of cotton blend and PP yarn (PP: polypropylene). Since it has resilience, the effect of maintaining the relative position of each return conductor 3 can be maintained even if the entire electric cable is bent many times.

本発明の第１実施形態に係る電気ケーブルの断面図である。It is sectional drawing of the electric cable which concerns on 1st Embodiment of this invention. 本発明の第２実施形態に係る電気ケーブルの断面図である。It is sectional drawing of the electric cable which concerns on 2nd Embodiment of this invention. 本発明の第３実施形態に係る電気ケーブルの断面図である。It is sectional drawing of the electric cable which concerns on 3rd Embodiment of this invention. 本発明の第４実施形態に係る電気ケーブルの断面図である。It is sectional drawing of the electric cable which concerns on 4th Embodiment of this invention. （ａ）従来の電気ケーブルの一部を断面にした斜視図、（ｂ）（ａ）の正面図、（ｃ）は、従来の電気ケーブルから距離Ｒ離れた位置での磁束密度を観測した場合の説明図である。(A) The perspective view which made a part of the conventional electric cable a cross section, (b) The front view of (a), (c) is the case where the magnetic flux density in the position away from the conventional electric cable by the distance R is observed It is explanatory drawing of.

１，１０，２０，３０　　　　電気ケーブル
２，３１　　　　　　　　　　往路導体
２ａ，３１ａ　　　　　　　　往路絶縁層
３，３２　　　　　　　　　　帰路導体
３ａ，３２ａ　　　　　　　　帰路絶縁層
４　　　　　　　　　　　　　介在物
ＥＮ１　　　　　　　　　　　第１の同心円上
ＥＮ２　　　　　　　　　　　第２の同心円上
Ｓ１，Ｓ２　　　　　　　　　隙間 1, 10, 20, 30 Electric cable 2, 31 Outward conductor 2a, 31a Outbound insulation layer 3, 32 Return conductor 3a, 32a Return insulation layer 4 Inclusion EN1 First concentric circle EN2 Second concentric circle S1, S2 Gap

　＜第１実施形態＞
　以下に本発明の第１実施形態を図面に基づいて説明すると、図１は本発明の第１実施形態に係る電気ケーブルの断面図である。この電気ケーブル１は、中心に円形状の往路導体２を有し、その往路導体２の外周に接するように、同心円上に複数の円形状の帰路導体３（図示では４つ）と介在物４（図示では４つ）を交互に有し、その帰路導体３と介在物４の外周全体を、ＰＶＣ（ポリ塩化ビニル）樹脂、フッ素系樹脂等からなる外被５で包み覆って構成されている。 <First Embodiment>
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of an electric cable according to the first embodiment of the present invention. The electric cable 1 has a circular outward path conductor 2 at the center, and a plurality of circular return conductors 3 (four in the figure) and inclusions 4 on a concentric circle so as to be in contact with the outer periphery of the outward path conductor 2. (4 in the figure) are alternately arranged, and the entire outer periphery of the return conductor 3 and the inclusion 4 is wrapped and covered with a jacket 5 made of PVC (polyvinyl chloride) resin, fluorine resin, or the like. .

　往路導体２は、金属等からなるもので、外周がゴム系材料からなる往路絶縁層２ａで被覆されて構成されている。 The forward conductor 2 is made of metal or the like, and has an outer periphery covered with an outward insulating layer 2a made of a rubber-based material.

　帰路導体３は、金属等からなるもので、外周がゴム系材料からなる帰路絶縁層３ａで被覆されて構成されている。このように、帰路導体３の外周を帰路絶縁層３ａで被覆すれば、大地電位がない場所で電気ケーブル１が使用され、帰路導体３に高電圧がかかったとしても、電気ケーブル１が破損するようなことがない。 The return conductor 3 is made of a metal or the like, and has an outer periphery covered with a return insulating layer 3a made of a rubber-based material. Thus, if the outer periphery of the return conductor 3 is covered with the return insulation layer 3a, the electric cable 1 is used in a place where there is no ground potential, and the electric cable 1 is damaged even if a high voltage is applied to the return conductor 3. There is no such thing.

　また、帰路導体３は、前記往路絶縁層２ａの外周を沿うように移動可能に設けられ、往路導体２よりも細径に形成されている。なお、帰路導体３の断面積は、往路導体２の断面積を帰路導体数（図示では４つ）で除した値に設定するのが好ましい。必要な帰路導体３の量を最小に設計することができるからである。 Further, the return conductor 3 is provided so as to be movable along the outer periphery of the outward insulation layer 2 a and is formed with a diameter smaller than that of the outward conductor 2. The cross-sectional area of the return conductor 3 is preferably set to a value obtained by dividing the cross-sectional area of the outward conductor 2 by the number of return conductors (four in the drawing). This is because the required amount of the return conductor 3 can be designed to a minimum.

　介在物４は、綿混紡物、ＰＰヤーン（ＰＰ：ポリプロピレン）等からなるもので、可撓性があり、非磁性体であればどのようなものであってもよい。さらに、自己復元性を有する材質であればより好ましい。 The inclusion 4 is made of a cotton blend, PP yarn (PP: polypropylene), etc., and may be any material as long as it is flexible and non-magnetic. Furthermore, it is more preferable if the material has self-restoring properties.

　このように構成された電気ケーブル１の往路導体２に往路電流を流し、各帰路導体３に夫々帰路電流を流すと、電気ケーブル１には磁束が発生し、その磁束が外部へ漏洩する。しかしながら、本発明の第１実施形態では、中心に円形状の往路導体２を有し、その往路導体２の外周に接するように、同心円上に円形状の帰路導体３を複数有しているから、各帰路導体３を夫々流れる電流によって発生する磁束は、仮想的に、往路導体２に流れる電流によって発生する磁束に近い磁束を発生することとなり、磁束同士が効率的に打ち消し合うこととなる。それがために、電気ケーブル１から外部へ漏洩する磁束を効率的に抑制することができる。 When a forward current is passed through the forward conductor 2 of the electrical cable 1 configured as described above and a return current is passed through each return conductor 3, a magnetic flux is generated in the electrical cable 1, and the magnetic flux leaks to the outside. However, in the first embodiment of the present invention, the circular outward path conductor 2 is provided at the center, and a plurality of circular return conductors 3 are provided concentrically on the outer periphery of the outward path conductor 2. The magnetic flux generated by the current flowing in each return conductor 3 virtually generates a magnetic flux close to the magnetic flux generated by the current flowing in the forward conductor 2, and the magnetic fluxes cancel each other efficiently. Therefore, the magnetic flux leaking from the electric cable 1 to the outside can be efficiently suppressed.

　また、本実施形態に係る電気ケーブル１は、各帰路導体３を夫々、往路絶縁層２ａの外周に沿うように移動可能に設けているから、各帰路導体３を夫々撚ることが可能となり、電気ケーブル１から外部へ漏洩する磁束を軽減させることができる。さらには、各帰路導体３は、夫々、往路導体２よりも細径に形成されているから、各帰路導体３夫々の撚りピッチを幅狭にすることが可能となり、撚りによる電気ケーブル１から外部へ漏洩する磁束を軽減させる効果をより発揮させることができる。 Moreover, since the electric cable 1 according to the present embodiment is provided so that each return conductor 3 can be moved along the outer circumference of the outward insulation layer 2a, each return conductor 3 can be twisted. Magnetic flux leaking from the electric cable 1 to the outside can be reduced. Furthermore, since each return conductor 3 is formed with a diameter smaller than that of the outward conductor 2, the twist pitch of each return conductor 3 can be reduced, and the electric cable 1 by twisting is externally connected. The effect of reducing the magnetic flux leaking into the can be further exhibited.

　そして、本実施形態に係る電気ケーブル１は、各帰路導体３，３間に夫々介在物４を配設しているから、各帰路導体３を夫々、往路導体２よりも細径に形成したことによる上述の効果をさらに発揮させるために電気ケーブル１全体に曲げが加わったとしても、各帰路導体３の相対的位置を保持させることができる。それがために、電気ケーブル１全体に曲げが加わっても、相対的位置は、僅少な変化にとどまり、電気ケーブル１全体に曲げが加わったことによる、電気ケーブル１から外部へ漏洩する磁束を軽減させる効果の損失を、最小限度に抑えることができる。 And since the electrical cable 1 which concerns on this embodiment has arrange | positioned the inclusion 4 between each return conductor 3 and 3, respectively, each return conductor 3 was formed in diameter smaller than the outward conductor 2 respectively. Even if the entire electric cable 1 is bent in order to further exhibit the above-described effect, the relative positions of the return conductors 3 can be maintained. For this reason, even if the entire electric cable 1 is bent, the relative position remains slightly changed, and the magnetic flux leaking from the electric cable 1 to the outside due to the bending of the entire electric cable 1 is reduced. The loss of the effect to make can be suppressed to the minimum.

　また、介在物４を綿混紡物、ＰＰヤーン（ＰＰ：ポリプロピレン）の少なくともいずれか１つの材質で形成すれば、介在物４は自己復元性を有するため、電気ケーブル１全体に曲げが、何度加わっても、各帰路導体３の相対的位置を保持させるという効果を持続させることができる。 In addition, if the inclusion 4 is formed of at least one material of cotton blend and PP yarn (PP: polypropylene), the inclusion 4 has self-restoring property, so that the entire electric cable 1 is bent several times. Even if added, the effect of maintaining the relative position of each return conductor 3 can be maintained.

　なお、本実施形態では、往路導体２の外周に接するように、同心円上に複数の円形状の帰路導体３と介在物４を交互に有したが、交互でなくとも、２つ連続して帰路導体３を有した後、介在物４を有しても良いし、３つ連続して帰路導体３を有した後、介在物４を有しても良い。すなわち、各帰路導体３，３間の所要間隔おきに、可撓性のある介在物４を配置するのであれば、帰路導体３と介在物４をどのような配置にしてもよい。 In the present embodiment, a plurality of circular return conductors 3 and inclusions 4 are alternately arranged on a concentric circle so as to contact the outer circumference of the forward conductor 2. After having the conductor 3, the inclusion 4 may be included, or after three consecutive return conductors 3, the inclusion 4 may be included. That is, the return conductor 3 and the inclusion 4 may be arranged in any manner as long as the flexible inclusion 4 is arranged at every required interval between the return conductors 3 and 3.

　＜第２実施形態＞
　次に本発明の第２実施形態を図面に基づいて説明すると、図２は、本発明の第２実施形態に係る電気ケーブルの断面図である。なお、第１実施形態と同一構成については、同一の符号を付し、説明は省略する。 Second Embodiment
Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a cross-sectional view of an electric cable according to the second embodiment of the present invention. In addition, about the same structure as 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

　電気ケーブル１０は、中心に往路導体２を有し、その往路導体２の外周に往路絶縁層２ａを有し、その往路絶縁層２ａの外周に、少なくとも２つの同心円上に、外周に帰路絶縁層３ａを被覆してなる帰路導体３を複数配設してなり、その各帰路絶縁層３ａ夫々の外周全体を外被５で包み覆って構成されている。 The electric cable 10 has a forward conductor 2 in the center, and has an outward insulation layer 2a on the outer periphery of the outward conductor 2, at least two concentric circles on the outer periphery of the outward insulation layer 2a, and a return insulation layer on the outer periphery. A plurality of return conductors 3 covering 3a are provided, and the entire outer periphery of each return insulation layer 3a is covered and covered with a jacket 5.

　より詳しく説明すると、電気ケーブル１０は、前記往路絶縁層２ａの外周に接するように、同心円上（以下、第１の同心円上ＥＮ１という）に、外周に帰路絶縁層３ａを被覆してなる帰路導体３が複数（図示では８つ）配設され、その各帰路絶縁層３ａの外周に接するように、同心円上（以下、第２の同心円上ＥＮ２という）に、外周に帰路絶縁層３ａを被覆してなる帰路導体３が複数（図示では８つ）配設されている。そして、第２の同心円上ＥＮ２に配設されてなる、外周に帰路絶縁層３ａを被覆してなる各帰路導体３間に設けられる複数の隙間Ｓ１に夫々介在物４が配設されている。 More specifically, the electric cable 10 is a concentric circle (hereinafter referred to as first concentric circle EN1) so as to be in contact with the outer periphery of the outward insulation layer 2a, and the return conductor formed by covering the outer periphery with the return insulation layer 3a. 3 (eight in the figure) are arranged, and the outer periphery of the return insulating layer 3a is concentrically (hereinafter referred to as the second concentric circle EN2) and the outer periphery of the return insulating layer 3a is covered. A plurality of return conductors 3 (eight in the figure) are arranged. The inclusions 4 are respectively disposed in a plurality of gaps S <b> 1 provided between the return conductors 3 that are provided on the second concentric circle EN <b> 2 and have the outer periphery covered with the return insulating layer 3 a.

　以上説明した本発明の第２実施形態に係る電気ケーブル１０によれば、第１の同心円上ＥＮ１に配設されてなる複数の帰路導体３夫々に流れる帰路電流によって発生する磁束が、その各帰路導体３間から僅かに漏れ出したとしても、第２の同心円上ＥＮ２に配設されてなる複数の帰路導体３夫々に流れる帰路電流によって発生する磁束によって抑止される。それがために、往路導体２に流れる電流によって発生する磁束は、上記、第１の同心円上ＥＮ１及び第２の同心円上ＥＮ２に配設されてなる複数の帰路導体３夫々に流れる電流によって発生する磁束によって高い精度で打ち消される。 According to the electric cable 10 according to the second embodiment of the present invention described above, the magnetic flux generated by the return current flowing in each of the plurality of return conductors 3 arranged on the first concentric circle EN1 is each return path. Even a slight leakage from between the conductors 3 is suppressed by the magnetic flux generated by the return current flowing in each of the plurality of return conductors 3 arranged on the second concentric circle EN2. For this reason, the magnetic flux generated by the current flowing in the forward conductor 2 is generated by the current flowing in each of the plurality of return conductors 3 arranged on the first concentric circle EN1 and the second concentric circle EN2. It is canceled with high accuracy by the magnetic flux.

　しかして、電気ケーブル１０は、外部へ漏洩する磁束を、本発明の第１実施形態に係る電気ケーブル１に比べて、より効率的に抑制することができる。 However, the electric cable 10 can suppress the magnetic flux leaking to the outside more efficiently than the electric cable 1 according to the first embodiment of the present invention.

　なお、本実施形態では、第２の同心円上ＥＮ２に配設されてなる、外周に帰路絶縁層３ａを被覆してなる各帰路導体３間に設けられる複数の隙間Ｓ１全てに介在物４を設けたが、一部の隙間Ｓ１に介在物４を設けても良い。ただし、複数の隙間Ｓ１全てに介在物４を設けた方が好ましい。 In the present embodiment, the inclusions 4 are provided in all the plurality of gaps S1 provided between the return conductors 3 that are arranged on the second concentric circle EN2 and whose outer periphery is covered with the return insulating layer 3a. However, the inclusion 4 may be provided in a part of the gap S1. However, it is preferable to provide the inclusions 4 in all the plurality of gaps S1.

　また、第１の同心円上ＥＮ１に配設されてなる、外周に帰路絶縁層３ａを被覆してなる各帰路導体３間に設けられる複数の隙間Ｓ２には、介在物４を設けていないが、勿論、設けてもよい。 In addition, the inclusions 4 are not provided in the plurality of gaps S2 provided between the return conductors 3 that are provided on the first concentric circle EN1 and whose outer periphery covers the return insulating layer 3a. Of course, it may be provided.

　さらには、本実施形態では、２つの同心円上しか設けていないが、それ以上設けてもよい。 Furthermore, in the present embodiment, only two concentric circles are provided, but more may be provided.

　＜第３実施形態＞
　次に本発明の第３実施形態を図面に基づいて説明すると、図３は、本発明の第３実施形態に係る電気ケーブルの断面図である。なお、第１実施形態と同一構成については、同一の符号を付し、説明は省略する。 <Third Embodiment>
Next, a third embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a cross-sectional view of an electric cable according to the third embodiment of the present invention. In addition, about the same structure as 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

　また、本発明の第３実施形態に係る電気ケーブル２０と本発明の第１実施形態に係る電気ケーブル１との差異は、複数の帰路導体３の外周夫々に、帰路絶縁層３ａを有しているか否かの違いのみであるので、構成の説明も省略する。 Further, the difference between the electric cable 20 according to the third embodiment of the present invention and the electric cable 1 according to the first embodiment of the present invention is that each of the outer circumferences of the plurality of return conductors 3 has a return insulating layer 3a. Since there is only a difference in whether or not there is a description, the description of the configuration is also omitted.

　以上説明した本発明の第３実施形態に係る電気ケーブル２０によれば、複数の帰路導体３の外周夫々に、帰路絶縁層３ａを有していないため、コストを低く抑えることができ、さらには、電気ケーブル２０全体を小径とすることができる。ただし、電気ケーブル２０は、帰路導体３の電位が大地電位と同一の場合に使用可能なものである。 According to the electric cable 20 according to the third embodiment of the present invention described above, since the return insulating layer 3a is not provided on each of the outer circumferences of the plurality of return conductors 3, the cost can be kept low. The entire electric cable 20 can be made to have a small diameter. However, the electric cable 20 can be used when the potential of the return conductor 3 is the same as the ground potential.

　なお、本実施形態に係る電気ケーブル２０は、第１実施形態に係る電気ケーブル１に関する帰路導体３の外周に帰路絶縁層３ａを有してないものを図示したが、勿論、第２実施形態に係る電気ケーブル１０に関する帰路導体３の外周に帰路絶縁層３ａを有していないものにも適用可能である。 In addition, although the electric cable 20 which concerns on this embodiment illustrated what does not have the return insulation layer 3a in the outer periphery of the return conductor 3 regarding the electric cable 1 which concerns on 1st Embodiment, of course, it is 2nd Embodiment. The present invention can also be applied to the case where the return conductor 3 relating to the electric cable 10 does not have the return insulating layer 3a on the outer periphery.

　＜第４実施形態＞
　次に本発明の第４実施形態を図面に基づいて説明すると、図４は、本発明の第４実施形態に係る電気ケーブルの断面図である。なお、第１実施形態と同一構成については、同一の符号を付し、説明は省略する。 <Fourth embodiment>
Next, a fourth embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a cross-sectional view of an electric cable according to the fourth embodiment of the present invention. In addition, about the same structure as 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

　電気ケーブル３０は、中心に可撓性のある介在物４を有し、その介在物４の外周に接するように、同心円上に、外周に往路絶縁層３１ａを有してなる往路導体３１と、外周に帰路絶縁層３２ａを有してなる帰路導体３２とを、交互に複数配設してなり、その各往路絶縁層３１ａと各帰路絶縁層３２ａの外周全体を外被５で包み覆って構成されている。そして、さらに、前記各往路絶縁層３１ａと各帰路絶縁層３２ａ間に設けられている複数の隙間Ｓ３に夫々介在物４が配設されている。 The electric cable 30 has a flexible inclusion 4 in the center, and concentric circles so as to be in contact with the outer periphery of the inclusion 4, and a forward conductor 31 having a forward insulating layer 31a on the outer periphery, A plurality of return conductors 32 having return insulating layers 32a on the outer periphery are alternately arranged, and the entire outer periphery of each of the forward insulating layers 31a and each of the return insulating layers 32a is covered with a jacket 5 and configured. Has been. Further, the inclusions 4 are disposed in a plurality of gaps S3 provided between the forward insulation layers 31a and the return insulation layers 32a.

　往路導体３１は、金属等からなるもので、前記介在物４の外周を沿うように移動可能に設けられ、介在物４よりも細径（例えば、介在物４の外径が８．１ｍｍだとすると絶縁層を含めて５ｍｍ程度）に形成されている。そして、往路導体３１の外周は、例えば、ゴム系材料からなる往路絶縁層３１ａで被覆されている。 The forward conductor 31 is made of metal or the like, is provided so as to be movable along the outer periphery of the inclusion 4, and is smaller than the inclusion 4 (for example, if the outer diameter of the inclusion 4 is 8.1 mm, it is insulated). It is formed in about 5 mm including the layer. And the outer periphery of the outward path conductor 31 is coat | covered with the outward path insulation layer 31a which consists of rubber materials, for example.

　帰路導体３２は、金属等からなるもので、前記介在物４の外周を沿うように移動可能に設けられ、介在物４よりも細径（例えば、例えば介在物４の外径を８．１ｍｍだとすると絶縁層を含めて５ｍｍ程度）に形成されている。そして、帰路導体３２の外周は、例えば、ゴム系材料からなる帰路絶縁層３２ａで被覆されている。 The return conductor 32 is made of metal or the like, is provided so as to be movable along the outer periphery of the inclusion 4, and has a smaller diameter than the inclusion 4 (for example, the outer diameter of the inclusion 4 is 8.1 mm, for example). (Including the insulating layer). The outer periphery of the return conductor 32 is covered with a return insulating layer 32a made of, for example, a rubber-based material.

　以上説明した本発明の第４実施形態に係る電気ケーブル３０によれば、往路導体３１と帰路導体３２とを交互に複数配設してなるから、隣接する往路導体３１，帰路導体３２から発生する磁束が夫々打ち消し合うこととなる。しかして、電気ケーブル３０から外部へ漏洩する磁束を効率的に抑制することができる。 According to the electric cable 30 according to the fourth embodiment of the present invention described above, a plurality of the forward conductors 31 and the return conductors 32 are alternately arranged, and therefore, generated from the adjacent forward conductors 31 and the return conductors 32. Magnetic flux will cancel each other. Therefore, the magnetic flux leaking from the electric cable 30 to the outside can be efficiently suppressed.

　また、各往路導体３１と各帰路導体３２は、夫々、前記介在物４の外周を沿うように移動可能に設けられてなるから、一対の往路導体３１と帰路導体３２を夫々撚り合わせることが可能となり、電気ケーブルから外部へ漏洩する磁束を軽減させることができる。 In addition, since each forward conductor 31 and each return conductor 32 are movably provided along the outer periphery of the inclusion 4, the pair of forward conductors 31 and the return conductors 32 can be twisted together. Thus, the magnetic flux leaking from the electric cable to the outside can be reduced.

　さらに、各往路導体３１と各帰路導体３２は、夫々、介在物４よりも細径に形成されているから、撚りピッチを幅狭にすることが可能となり、撚りによる電気ケーブル３０から外部へ漏洩する磁束を軽減させる効果をより発揮させることができる。 Furthermore, since each forward conductor 31 and each return conductor 32 are formed with a diameter smaller than that of the inclusion 4, the twist pitch can be narrowed, and leakage from the electric cable 30 due to twisting to the outside can be achieved. The effect which reduces the magnetic flux to perform can be exhibited more.

　そして、電気ケーブル３０は、細径で可撓性のある往路導体３１と帰路導体３２を使用しているから、移動用ケーブルとして高い曲げ性能を有する。 And since the electric cable 30 uses the flexible forward path conductor 31 and the return path conductor 32 with a small diameter, it has a high bending performance as a moving cable.

　なお、本発明の実施形態では、各往路絶縁層３１ａと各帰路絶縁層３２ａ間に設けられている複数の隙間Ｓ３に介在物４を全て配設しているが、一部の隙間Ｓ３に介在物４を配設してもよいし、配設しなくてもよい。ただし、複数の隙間Ｓ３に介在物４を全て配設した方が好ましい。 In the embodiment of the present invention, all of the inclusions 4 are disposed in the plurality of gaps S3 provided between each forward path insulating layer 31a and each return path insulating layer 32a, but intervened in some gaps S3. The object 4 may be disposed or may not be disposed. However, it is preferable to arrange all the inclusions 4 in the plurality of gaps S3.

　また、本発明の実施形態では、中心に可撓性のある介在物４を有し、その介在物４の外周に接するように、同心円上に、外周に往路絶縁層３１ａを有してなる往路導体３１と、外周に帰路絶縁層３２ａを有してなる帰路導体３２とを、交互に複数配設してなるものを示したが、各往路絶縁層３１ａと各帰路絶縁層３２ａの外側に、さらに、外周に往路絶縁層３１ａを有してなる往路導体３１と、外周に帰路絶縁層３２ａを有してなる帰路導体３２とを、交互に複数配設してもよい。 Further, in the embodiment of the present invention, the forward path having the flexible inclusion 4 at the center and having the forward insulating layer 31a on the outer periphery concentrically so as to contact the outer periphery of the inclusion 4 The conductor 31 and the return conductor 32 having a return insulating layer 32a on the outer periphery are shown as being alternately arranged, but outside each forward insulating layer 31a and each return insulating layer 32a, Further, a plurality of forward conductors 31 having the outward insulation layer 31a on the outer periphery and return conductors 32 having the return insulation layer 32a on the outer periphery may be alternately arranged.

　以上説明した本発明の第１実施形態～第４実施形態に係る電気ケーブルは、円形状のものを示したが、形状は円形に限らず、様々な形状に設計変更可能である。 The electric cables according to the first to fourth embodiments of the present invention described above are circular, but the shape is not limited to a circle, and the design can be changed to various shapes.

　また、本発明の第１実施形態～第４実施形態に係る電気ケーブルは、可撓性を有しているため、屋内外の電気機器に用いられるコード、エレベータ、建設機械、工場内の設備、電気自動車を充電する際に使用するケーブルなどに適用可能である。 In addition, since the electric cable according to the first to fourth embodiments of the present invention has flexibility, a cord, an elevator, a construction machine, a factory facility, It can be applied to cables used for charging electric vehicles.

Claims (10)

　中心に往路導体を有し、その往路導体の外周に往路絶縁層を有し、その往路絶縁層の外周に接するように、同心円上に帰路導体を複数有し、その各帰路導体間の所要間隔おきに、非磁性体で且つ可撓性のある介在物を配設してなることを特徴とする電気ケーブル。 There is a forward conductor at the center, an outer insulating layer is provided on the outer periphery of the outgoing conductor, and there are a plurality of return conductors on concentric circles so as to contact the outer periphery of the outgoing insulating layer, and a required interval between the return conductors. An electrical cable comprising a nonmagnetic material and a flexible inclusion. 　中心に往路導体を有し、その往路導体の外周に往路絶縁層を有し、その往路絶縁層の外周に、少なくとも２つの同心円上に帰路導体を複数配設してなり、前記各帰路導体間に設けられる複数の隙間には、非磁性体で且つ可撓性のある介在物を配設してなることを特徴とする電気ケーブル。 It has a forward conductor at the center, and has an outward insulation layer on the outer periphery of the outward conductor, and a plurality of return conductors are arranged on at least two concentric circles on the outer periphery of the outward insulation layer. An electrical cable comprising a plurality of gaps provided in a nonmagnetic material and flexible inclusions. 　中心に非磁性体で且つ可撓性のある介在物を有し、その介在物の外周に、同心円上に、外周に往路絶縁層を有してなる往路導体と、外周に帰路絶縁層を有してなる帰路導体とを、交互に複数配設してなることを特徴とする電気ケーブル。 It has a non-magnetic and flexible inclusion in the center, a concentric circle on the outer periphery of the inclusion, a forward conductor having a forward insulating layer on the outer periphery, and a return insulating layer on the outer periphery. An electrical cable comprising a plurality of return conductors alternately arranged. 　前記各帰路導体は、夫々、その外周に帰路絶縁層を有してなることを特徴とする請求項１又は２に記載の電気ケーブル。 3. The electric cable according to claim 1, wherein each of the return conductors has a return insulating layer on an outer periphery thereof. 　前記各帰路導体の断面積は、夫々、前記往路導体の断面積を前記各帰路導体の総数で除した値であることを特徴とする請求項１又は２に記載の電気ケーブル。 3. The electric cable according to claim 1, wherein the cross-sectional area of each return conductor is a value obtained by dividing the cross-sectional area of the forward conductor by the total number of the return conductors. 　前記各帰路導体は、夫々、前記往路絶縁層の外周を沿うように移動可能に設けられてなることを特徴とする請求項１又は２に記載の電気ケーブル。 3. The electric cable according to claim 1, wherein each of the return conductors is provided so as to be movable along the outer periphery of the outward insulation layer. 　前記各帰路導体は、夫々、前記往路導体よりも細径に形成されてなることを特徴とする請求項６に記載の電気ケーブル。 The electric cable according to claim 6, wherein each of the return conductors has a diameter smaller than that of the outward conductor. 　前記各往路導体と前記各帰路導体は、夫々、前記介在物の外周を沿うように移動可能に設けられてなることを特徴とする請求項３に記載の電気ケーブル。 4. The electric cable according to claim 3, wherein each of the forward conductors and each of the return conductors is movably provided along the outer periphery of the inclusion. 　前記各往路導体と前記各帰路導体は、夫々、前記介在物よりも細径に形成されてなることを特徴とする請求項８に記載の電気ケーブル。 The electric cable according to claim 8, wherein each of the forward conductors and each of the return conductors is formed with a diameter smaller than that of the inclusion. 　前記介在物は、綿混紡物、ＰＰヤーン（ＰＰ：ポリプロピレン）のうち少なくともいずれか１つの材質で形成されてなることを特徴とする請求項１～３のいずれかに記載の電気ケーブル。 The electric cable according to any one of claims 1 to 3, wherein the inclusion is made of at least one material selected from a cotton blend and a PP yarn (PP: polypropylene).
PCT/JP2009/064840 2009-08-26 2009-08-26 Electric cable Ceased WO2011024262A1 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013015333A1 (en) * 2011-07-25 2013-01-31 矢崎総業株式会社 High-voltage conduction path and wiring harness
WO2013027418A1 (en) * 2011-08-24 2013-02-28 パナソニック株式会社 Cable
WO2014104024A1 (en) * 2012-12-27 2014-07-03 矢崎総業株式会社 Cable
JP2015099652A (en) * 2013-11-18 2015-05-28 昭和電線ケーブルシステム株式会社 Composite cable
CN110459359A (en) * 2019-09-10 2019-11-15 远东电缆有限公司 Wind-powered electricity generation big section EPR isolated dc flexible cable and its production technology
EP4174881A1 (en) * 2021-10-26 2023-05-03 Ezone Green Energy AS Improved low-emi electric cable and electric circuit comprising such cable

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676576A (en) * 1969-07-07 1972-07-11 Aerospatiale Multiconductor stranded remote-control cable
US3815054A (en) * 1973-07-27 1974-06-04 Rca Corp Balanced, low impedance, high frequency transmission line
JPS5270825A (en) * 1975-12-10 1977-06-13 Pioneer Electronic Corp Speaker feeder wire
JPS5652809A (en) * 1979-10-05 1981-05-12 Sumitomo Electric Industries Singleecore submarine power cable
JPS6328209U (en) * 1986-08-11 1988-02-24
JPH06215638A (en) * 1993-01-18 1994-08-05 Sumitomo Electric Ind Ltd Direct-current water bottom power cable line
JPH08315640A (en) * 1995-05-22 1996-11-29 Hitachi Cable Ltd Power supply system for overhead ground wire with built-in power supply line
JPH11120833A (en) * 1997-10-09 1999-04-30 Fujikura Ltd Neutral composite DC power cable
JPH11120836A (en) * 1997-10-09 1999-04-30 Fujikura Ltd DC power coaxial cable
JPH11120837A (en) * 1997-10-09 1999-04-30 Fujikura Ltd Neutral composite DC power cable and DC power cable line
JP2000268648A (en) * 1999-03-15 2000-09-29 Sumitomo Electric Ind Ltd DC solid power cable, DC solid power cable line, and method of monitoring DC solid power cable line
JP2002222617A (en) * 2001-01-26 2002-08-09 Kansai Tsushin Densen Co Ltd Communication cable
JP2003051216A (en) * 2001-08-07 2003-02-21 Furukawa Electric Co Ltd:The Submarine laid long body
JP2005044765A (en) * 2003-07-21 2005-02-17 Susumu Kiyokawa Electric wire, power-transmission method and electrical equipment
JP2007059085A (en) * 2005-08-22 2007-03-08 Viscas Corp Coaxial cable for bipolar DC power transmission

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676576A (en) * 1969-07-07 1972-07-11 Aerospatiale Multiconductor stranded remote-control cable
US3815054A (en) * 1973-07-27 1974-06-04 Rca Corp Balanced, low impedance, high frequency transmission line
JPS5270825A (en) * 1975-12-10 1977-06-13 Pioneer Electronic Corp Speaker feeder wire
JPS5652809A (en) * 1979-10-05 1981-05-12 Sumitomo Electric Industries Singleecore submarine power cable
JPS6328209U (en) * 1986-08-11 1988-02-24
JPH06215638A (en) * 1993-01-18 1994-08-05 Sumitomo Electric Ind Ltd Direct-current water bottom power cable line
JPH08315640A (en) * 1995-05-22 1996-11-29 Hitachi Cable Ltd Power supply system for overhead ground wire with built-in power supply line
JPH11120833A (en) * 1997-10-09 1999-04-30 Fujikura Ltd Neutral composite DC power cable
JPH11120836A (en) * 1997-10-09 1999-04-30 Fujikura Ltd DC power coaxial cable
JPH11120837A (en) * 1997-10-09 1999-04-30 Fujikura Ltd Neutral composite DC power cable and DC power cable line
JP2000268648A (en) * 1999-03-15 2000-09-29 Sumitomo Electric Ind Ltd DC solid power cable, DC solid power cable line, and method of monitoring DC solid power cable line
JP2002222617A (en) * 2001-01-26 2002-08-09 Kansai Tsushin Densen Co Ltd Communication cable
JP2003051216A (en) * 2001-08-07 2003-02-21 Furukawa Electric Co Ltd:The Submarine laid long body
JP2005044765A (en) * 2003-07-21 2005-02-17 Susumu Kiyokawa Electric wire, power-transmission method and electrical equipment
JP2007059085A (en) * 2005-08-22 2007-03-08 Viscas Corp Coaxial cable for bipolar DC power transmission

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SEIICHI HONMA, PLASTIC POCKET BOOK, ENTIRELY REVISED EDITION, 15 March 2003 (2003-03-15), pages 122 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013015333A1 (en) * 2011-07-25 2013-01-31 矢崎総業株式会社 High-voltage conduction path and wiring harness
US9252575B2 (en) 2011-07-25 2016-02-02 Yazaki Corporation High-voltage conduction path and wiring harness
WO2013027418A1 (en) * 2011-08-24 2013-02-28 パナソニック株式会社 Cable
WO2014104024A1 (en) * 2012-12-27 2014-07-03 矢崎総業株式会社 Cable
US9633762B2 (en) 2012-12-27 2017-04-25 Yazaki Corporation Cable
JP2015099652A (en) * 2013-11-18 2015-05-28 昭和電線ケーブルシステム株式会社 Composite cable
CN110459359A (en) * 2019-09-10 2019-11-15 远东电缆有限公司 Wind-powered electricity generation big section EPR isolated dc flexible cable and its production technology
EP4174881A1 (en) * 2021-10-26 2023-05-03 Ezone Green Energy AS Improved low-emi electric cable and electric circuit comprising such cable

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