WO2014103674A1 - Wire harness - Google Patents

Wire harness Download PDF

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Publication number
WO2014103674A1
WO2014103674A1 PCT/JP2013/082916 JP2013082916W WO2014103674A1 WO 2014103674 A1 WO2014103674 A1 WO 2014103674A1 JP 2013082916 W JP2013082916 W JP 2013082916W WO 2014103674 A1 WO2014103674 A1 WO 2014103674A1
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WO
WIPO (PCT)
Prior art keywords
wire harness
wire
voltage
phase
wires
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Application number
PCT/JP2013/082916
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French (fr)
Japanese (ja)
Inventor
昭宏 林
啓二 平田
Original Assignee
株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
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Application filed by 株式会社オートネットワーク技術研究所, 住友電装株式会社, 住友電気工業株式会社 filed Critical 株式会社オートネットワーク技術研究所
Publication of WO2014103674A1 publication Critical patent/WO2014103674A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/0207—Wire harnesses
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
    • H02G3/0462—Tubings, i.e. having a closed section
    • H02G3/0481—Tubings, i.e. having a closed section with a circular cross-section
    • 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
    • H01B7/26—Reduction of losses in sheaths or armouring

Definitions

  • the present invention relates to a wire harness.
  • a vehicle such as an electric vehicle or a hybrid vehicle converts a direct current output from a power source such as a battery into an alternating current using an inverter and supplies the alternating current to a motor.
  • a power source such as a battery
  • an inverter surge voltage is generated by control such as inverter switching, and when this inverter surge voltage enters the motor, a partial discharge is generated between the motor coils. If partial discharge continues to occur, the insulation coating of the motor coil is eroded, eventually resulting in dielectric breakdown and shorting between the motor coils.
  • Patent Document 1 a method of preventing the insulation coating by increasing the insulation coating of the motor coil or reducing the dielectric constant of the insulation coating of the motor coil is known.
  • the method of suppressing an inverter surge voltage is provided by providing a surge voltage suppression circuit in the three-phase harness which connects an inverter and a motor (patent document 2).
  • JP 2010-189510 A Japanese Unexamined Patent Publication No. 2009-71982
  • the processing cost and processing steps increase, such as processing the insulation coating of the motor coil and providing a surge voltage suppression circuit.
  • a method of suppressing the surge voltage by moving the resonance frequency of the wire harness to the high frequency side where the noise intensity is small among the inverter outputs to avoid the frequency component of the switching waveform from being amplified by resonance has been studied.
  • the resonance frequency of the wire harness is f (MHz)
  • the inductance of the wire harness is L ( ⁇ H)
  • the capacitance of the harness is C (pF)
  • the resonance frequency f of the wire harness is 1 / (2 ⁇ ( LC) 0.5 ).
  • the resonance frequency of the wire harness can be moved to the high frequency side by reducing the length of the wire harness and reducing the inductance (L) and the capacitance (C).
  • the resonance frequency of the wire harness cannot be changed by shortening the length of the wire harness, and a countermeasure for this is desired.
  • the present invention has been completed based on the above situation, and an object thereof is to move the resonance frequency of the wire harness to the high frequency side without shortening the length of the wire harness.
  • the present invention provides a wire harness that collectively covers a plurality of electric wires with a cylindrical shield portion, wherein the shield is provided between the plurality of electric wires and the shield portion. It is characterized in that a synthetic resin separating portion is interposed to separate the plurality of electric wires from the portion.
  • both members can be moved away from each other by separating the plurality of electric wires and the shield portion.
  • the capacitance between an electric wire and a shield part can be made small, and the resonant frequency of a wire harness can be moved to the high frequency side. That is, without depending on the length of the wire harness, the frequency component of the switching waveform can be avoided from being amplified by resonance, and the surge voltage can be suppressed.
  • the separation part is good also as a structure which has comprised the cylindrical shape which covers the said some electric wire over a perimeter.
  • a separation part that covers a part of the electric wire
  • the distance between the electric wire and the shield part becomes short in a part that is not covered by the separation part.
  • the separation part since the separation part has comprised the cylindrical shape which covers an electric wire over a perimeter, the distance of an electric wire and a shield part can be ensured reliably.
  • the electric wire may be a bundled electric wire composed of a plurality of small-diameter electric wires. If the cross-sectional area of the large-diameter bundled wire bundled with the large-diameter wire and the small-diameter bundled wire bundled with the small-diameter wire are the same, the small-diameter bundled wire is located between the wires than the large-diameter bundled wire.
  • the wires can be bundled together so as to fill the gap, and the maximum outer diameter of the bundled wires of small diameter can be made smaller than that of the bundled wires of large diameter.
  • the distance between the wire and the shield portion is increased compared to the case of bundling large-diameter wires, and the wire harness The capacitance between the electric wire and the shield part can be reduced. Thereby, the resonant frequency of a wire harness can be moved to the high frequency side further.
  • the said separation part is good also as a structure which is a foaming resin which foams by heating.
  • the shield portion is expanded and the electric wire and the shielding portion are separated.
  • the electric wires can be concentrated toward the axial center of the wire harness so that a plurality of electric wires can be made smaller. That is, by separating the electric wire and the shield part, the capacitance between the electric wire and the shield part is reduced, and by concentrating the electric wire and bundling a plurality of electric wires, the inductance of the wire harness can be reduced. Thereby, the resonant frequency of a wire harness can be moved to the high frequency side further.
  • the resonance frequency of the wire harness can be moved to the high frequency side without shortening the length of the wire harness.
  • Sectional drawing of the wire harness in Embodiment 1 Sectional drawing of the wire harness in Embodiment 2. Sectional drawing of the wire harness in Embodiment 3.
  • a first embodiment of the present invention will be described with reference to FIG.
  • This embodiment is arranged between an inverter (not shown) mounted on a vehicle and a three-phase AC motor (not shown), and is output from the inverter in three phases of U phase, V phase, and W phase.
  • the wire harness 10 which supplies an alternating current to a three-phase alternating current motor is illustrated.
  • the wire harness 10 includes a plurality of high-voltage wires 20 through which currents of U-phase, V-phase, and W-phase respectively flow, and an inner corrugate (an example of a “separation part”) that collectively covers the plurality of high-voltage wires 20. ) 30, a shield part 40 that covers the outer surface of the inner corrugate 30, and an outer corrugate 50 that covers the outer periphery of the shield part 40.
  • the high-voltage electric wire 20 is a small-diameter high-voltage electric wire in which an insulating coating is coated around the core wire.
  • the plurality of high-voltage wires 20 are one-third (four in this embodiment) as U-phase wires 20A, one-third as V-phase wires 20B, and the remaining one-third as W.
  • the phase wire 20C is used.
  • each phase of the U phase, the V phase, and the W phase is configured as a bundled electric wire that is divided into a plurality of pieces by the small-diameter high-voltage electric wire 20.
  • the high-voltage electric wires 20 are irregularly arranged.
  • the inner corrugate 30 is made of a synthetic resin and has a substantially cylindrical shape with a substantially uniform thickness, and has a configuration in which a plurality of high-voltage wires 20 are covered over the entire length. In addition, a plurality of high-voltage wires 20 are inserted into the inner corrugate 30 with a clearance CL ⁇ b> 1 between the high-voltage wires 20.
  • the shield part 40 is a braided wire formed in a cylindrical shape by knitting conductive metal strands in a mesh shape, and covers the entire outer periphery of the inner corrug 30 over the entire length of the inner corrug 30. It is covered. That is, the inner corrugation 30 is interposed between each high-voltage electric wire 20 and the shield portion 40, and the shield portion 40 is at least as thick as the inner corrugate 30 from the high-voltage electric wire 20. It is in a state where the distance is increased (a state in which a distance equal to or greater than the thickness of the inner corrugate 30 is ensured between the high-voltage wire 20 and the shield part 40).
  • the shield part 40 is constituted by a braided wire, but the shield part may be constituted by a conductive metal thin film or the like.
  • the outer corrugate 50 is made of a synthetic resin and is formed in a substantially cylindrical shape having substantially the same thickness as the inner corrug 30, and prevents damage to the shield part 40 and the like due to contact with other members. Yes. Further, the inner diameter of the outer corrugated 50 is formed in a substantially cylindrical shape larger than the outer diameter of the inner corrugated 30. When the outer corrugated 50 covers the outer periphery of the shield part 40, the outer corrugated 50 is located between the inner corrugated 30 and the outer corrugated 50. The shield part 40 is arranged in a state having a clearance CL2.
  • the wire harness 10 of the present embodiment is configured as described above, and a method for manufacturing the wire harness 10 will be briefly described, and the operation thereof will be described subsequently.
  • the same number of U-phase electric wires 20A, V-phase electric wires 20B, and W-phase electric wires 20C are prepared, and these high-voltage electric wires 20 are inserted into the inner corrugate 30.
  • each high-voltage electric wire 20 is inserted with a clearance CL1 around it.
  • the shield part 40 is put on the inner corrugate 30 through which the plurality of high-voltage electric wires 20 are inserted, whereby the high-voltage electric wires 20 are shielded by the shield part 40. Moreover, each high voltage electric wire 20 and the shield part 40 are reliably pulled apart by the inner corrugate 30, and at least a distance corresponding to the thickness of the inner corrugated 30 is secured between each high voltage electric wire 20 and the shield part 40. It becomes the state. Finally, the inner corrug 30 covered with the shield part 40 is inserted into the outer corrugate 50, thereby completing the wire harness 10 in which the high-voltage wire 20 and the shield part 40 are protected from other members. As described above, according to the present embodiment, the wire harness 10 can be easily manufactured simply by inserting the high-voltage wire 20 through the inner corrug 30 and covering the inner corrug 30 with the shield portion 40 and the outer corrug 50.
  • the inner corrugation 30 is interposed between the high-voltage electric wires 20 and the shield portions 40 so as to separate the both members 20, 40. Are separated by at least a distance corresponding to the wall thickness of the inner corrugate 30.
  • the resonance frequency of the wire harness can be moved to the high frequency side by reducing the capacitance of the wire harness. Thereby, without shortening the length of a wire harness, it can avoid that the frequency component of a switching waveform amplifies by resonance, and can suppress a surge voltage.
  • the inner corrugate is a wire harness that covers a part of the high-voltage electric wire
  • the high-voltage electric wire and the shield part may come into direct contact when the wire harness is routed.
  • the high-voltage electric wires 20 are collectively covered by the cylindrical inner corrug 30 over the entire circumference, the high-voltage electric wires 20 and the shield part 40 are reliably moved away, The distance between both members 20 and 40 can be secured.
  • the U-phase, V-phase, and W-phase are each composed of a large-diameter bundled wire composed of one large-diameter high-voltage wire, and the U-phase, V-phase, and W-phase are each composed of a plurality of high-voltage wires. If the cross-sectional area of the bundled small-diameter wire is the same, the bundled high-voltage wires can be bundled so that the small-diameter bundled wires fill the gaps between the high-voltage wires rather than the large-diameter bundled wires. .
  • the U phase, the V phase, and the W phase are each composed of a plurality of high-voltage wires 20, and therefore each phase is composed of a single high-voltage wire having a large diameter.
  • the high-voltage electric wires 20 can be arranged so as to reduce the maximum outer diameter, and a large distance between each high-voltage electric wire 20 and the shield part 40 can be ensured. Thereby, the capacitance between the high voltage electric wire 20 and the shield part 40 in the wire harness 10 can be further reduced, and the resonance frequency of the wire harness 10 can be reliably moved to the high frequency side.
  • the wire harness 10 can be easily completed by inserting the high-voltage electric wire 20 into the inner corrug 30 and covering the inner corrug 30 with the shield portion 40 and the outer corrug 50. As compared with the case where the insulation coating of the motor coil is processed or a surge voltage suppression circuit is provided, it is possible to suppress an increase in processing cost.
  • the wire harness 110 according to the second embodiment is a modification of the inner corrugated body 30 according to the first embodiment, and the configuration, operation, and effects common to those in the first embodiment are duplicated, and thus the description thereof is omitted.
  • the same reference numerals are used for the same configurations as those in the first embodiment.
  • the inner corrugated body 130 of the second embodiment includes a substantially cylindrical inner tube 131, an outer tube 132 formed in a substantially cylindrical shape so as to cover the outer peripheral surface of the inner tube 131, and between the inner tube 131 and the outer tube 132. And a foamed resin 133 filled in the container.
  • the inner tube 131 and the outer tube 132 can be flexibly deformed, and the foamed resin 133 is a resin that foams when heated. Therefore, when the foamed resin 133 is heated and foamed after covering the inner corrug 130 through which the plurality of high voltage electric wires 20 are inserted with the shield part 40 and the outer corrugated 50, the gap between the high voltage electric wire 20 and the shield part 40 is obtained.
  • each high-voltage electric wire 20 is pressed toward the axis of the wire harness 110 by the inner tube 131.
  • the inner corrugate 130 is expanded to separate the high-voltage electric wire 20 and the shield portion 40, and the high-voltage electric wires 20 are concentrated toward the axis of the wire harness 110.
  • the high-voltage electric wire 20 can be bundled small. That is, by separating the high-voltage electric wire 20 and the shield part 40, the capacitance between the high-voltage electric wire 20 and the shield part 40 is reduced, and the plurality of high-voltage electric wires 20 are reduced toward the axis of the wire harness 110. By bundling, the inductance of the wire harness 110 can be reduced. Thereby, the resonance frequency of the wire harness 110 can be moved further to the high frequency side.
  • Embodiment 3 of the present invention will be described with reference to FIG.
  • the wire harness 210 of the third embodiment is obtained by changing the shape of the high-voltage electric wire in the first embodiment, and the configuration, operation, and effect common to the first embodiment are duplicated, and thus the description thereof is omitted.
  • the same reference numerals are used for the same configurations as those in the first embodiment.
  • the high-voltage electric wire of the third embodiment is configured by a flat flat cable 220 for each of the U phase, the V phase, and the W phase.
  • Each flat cable 220 has a configuration in which a plurality of core wires 221 are arranged in the horizontal direction and these core wires 221 are covered with an insulating coating 222, and U-phase, V-phase, and W-phase flat cables 220 are stacked in the vertical direction. And is inserted into the inner corrugate 30. Accordingly, the core wires 221 of the flat cable 220 are inserted into the inner corrugated 30 in a state of being aligned vertically and horizontally.
  • the present invention is not limited to the embodiments described with reference to the above description and drawings.
  • the following embodiments are also included in the technical scope of the present invention.
  • (1) In Embodiment 1 and Embodiment 2 described above, the U-phase, V-phase, and W-phase are each divided by the small-diameter high-voltage electric wire 20, but the present invention is limited to such an embodiment.
  • each phase may be constituted by a single high-voltage wire.
  • the high-voltage electric wire 20 is inserted into the inner corrugate 30 with the clearance CL1 around it.
  • the present invention is not limited to such an embodiment.
  • the inner corrugated body 30 and the outer corrugated body 50 are configured to have substantially the same thickness, but the present invention is not limited to such an embodiment.
  • the inner corrugate may be configured to be thicker than the outer corrugate.

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  • Engineering & Computer Science (AREA)
  • Insulated Conductors (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Indoor Wiring (AREA)

Abstract

A wire harness (10) is configured by collectively covering high-voltage electric wires (20) with a cylindrical shield section (40) and then covering the high-voltage electric wires (20) and the shield section (40) with an outer corrugated member (50). The wire harness (10) is characterized in that a synthetic resin inner corrugated member (30) is provided between each of the high-voltage electric wires (20) and the shield section (40) so as to separate the high-voltage electric wire (20) from the shield section (40), and in that the shield section (40) is separated from the individual high-voltage electric wires (20) by a distance corresponding to the wall thickness of at least the inner corrugated member (30).

Description

ワイヤハーネスWire harness
　本発明は、ワイヤハーネスに関する。 The present invention relates to a wire harness.
　電気自動車やハイブリッド車などの車両は、バッテリなどの電源から出力される直流電流を、インバータを用いて交流電流に変換してモータに供給している。
　ところで、インバータ制御する場合、インバータスイッチングなどの制御により、インバータサージ電圧が発生し、このインバータサージ電圧がモータに侵入することで、モータコイル間に部分放電が発生する。そして、部分放電が発生し続けると、モータコイルの絶縁被覆が侵食され、やがて絶縁破壊に至りモータコイル間が短絡してしまう。このため、モータコイルの絶縁被覆を厚くしたり、モータコイルの絶縁被覆の誘電率を低くしたりするなどして、絶縁被覆を防ぐ方法が知られている(特許文献１)。
　また、インバータとモータとを繋ぐ三相ハーネスにサージ電圧抑制回路を設けることで、インバータサージ電圧を抑制する方法が知られている（特許文献２）。 A vehicle such as an electric vehicle or a hybrid vehicle converts a direct current output from a power source such as a battery into an alternating current using an inverter and supplies the alternating current to a motor.
By the way, when inverter control is performed, an inverter surge voltage is generated by control such as inverter switching, and when this inverter surge voltage enters the motor, a partial discharge is generated between the motor coils. If partial discharge continues to occur, the insulation coating of the motor coil is eroded, eventually resulting in dielectric breakdown and shorting between the motor coils. For this reason, a method of preventing the insulation coating by increasing the insulation coating of the motor coil or reducing the dielectric constant of the insulation coating of the motor coil is known (Patent Document 1).
Moreover, the method of suppressing an inverter surge voltage is provided by providing a surge voltage suppression circuit in the three-phase harness which connects an inverter and a motor (patent document 2).
特開２０１０－１８９５１０号公報JP 2010-189510 A 特開２００９－７１９８２号公報Japanese Unexamined Patent Publication No. 2009-71982
　ところが、上記のような構成によると、モータコイルの絶縁被覆を加工したり、サージ電圧抑制回路を設けたりするなど、加工費や加工工程が増加してしまう。このため、インバータ出力の中でもノイズ強度が小さい高周波側にワイヤハーネスの共振周波数を移動させ、スイッチング波形の周波数成分が共振によって増幅することを回避し、サージ電圧を抑制する方法が検討されている。
　ここで、ワイヤハーネスの共振周波数をｆ（ＭＨｚ）とし、ワイヤハーネスのインダクタンスをＬ（μＨ）、ハーネスのキャパシタンスをＣ（ｐＦ）とした場合、ワイヤハーネスの共振周波数ｆは、１／（２π（ＬＣ）０．５）で表される。したがって、ワイヤハーネスの長さを短くして、インダクタンス（Ｌ）とキャパシタンス（Ｃ）を小さくすることで、ワイヤハーネスの共振周波数を高周波側に移動させることができる。
　しかしながら、ワイヤハーネスの長さを短くすることが困難な場合は、ワイヤハーネスの短尺化によるワイヤハーネスの共振周波数の変更ができず、その対策が切望されていた。 However, according to the above configuration, the processing cost and processing steps increase, such as processing the insulation coating of the motor coil and providing a surge voltage suppression circuit. For this reason, a method of suppressing the surge voltage by moving the resonance frequency of the wire harness to the high frequency side where the noise intensity is small among the inverter outputs to avoid the frequency component of the switching waveform from being amplified by resonance has been studied.
Here, when the resonance frequency of the wire harness is f (MHz), the inductance of the wire harness is L (μH), and the capacitance of the harness is C (pF), the resonance frequency f of the wire harness is 1 / (2π ( LC) 0.5 ). Therefore, the resonance frequency of the wire harness can be moved to the high frequency side by reducing the length of the wire harness and reducing the inductance (L) and the capacitance (C).
However, when it is difficult to shorten the length of the wire harness, the resonance frequency of the wire harness cannot be changed by shortening the length of the wire harness, and a countermeasure for this is desired.
　本発明は上記のような事情に基づいて完成されたものであって、ワイヤハーネスの長さを短くすることなく、ワイヤハーネスの共振周波数を高周波側に移動させることを目的とする。 The present invention has been completed based on the above situation, and an object thereof is to move the resonance frequency of the wire harness to the high frequency side without shortening the length of the wire harness.
　上記の目的を達成するための手段として本発明は、筒状のシールド部によって複数の電線を一括して覆うワイヤハーネスであって、複数の前記電線と前記シールド部との間には、前記シールド部から複数の前記電線を引き離すべく合成樹脂製の引離部が介設されているところに特徴を有する。
　このような構成のワイヤハーネスによると、複数の電線とシールド部とを引き離して両部材を遠ざけることができる。これにより、電線とシールド部との間のキャパシタンスを小さくし、ワイヤハーネスの共振周波数を高周波側に移動させることができる。すなわち、ワイヤハーネスの長さに依存することなく、スイッチング波形の周波数成分が共振によって増幅することを回避し、サージ電圧を抑制することができる。 As a means for achieving the above object, the present invention provides a wire harness that collectively covers a plurality of electric wires with a cylindrical shield portion, wherein the shield is provided between the plurality of electric wires and the shield portion. It is characterized in that a synthetic resin separating portion is interposed to separate the plurality of electric wires from the portion.
According to the wire harness having such a configuration, both members can be moved away from each other by separating the plurality of electric wires and the shield portion. Thereby, the capacitance between an electric wire and a shield part can be made small, and the resonant frequency of a wire harness can be moved to the high frequency side. That is, without depending on the length of the wire harness, the frequency component of the switching waveform can be avoided from being amplified by resonance, and the surge voltage can be suppressed.
　本発明の実施の態様として、以下の構成が好ましい。
　前記引離部は、複数の前記電線を全周に亘って覆う筒状をなしている構成としてもよい。
　例えば、電線の一部を覆う引離部の場合、ワイヤハーネスが配索される際に、電線が引離部によって覆われていない部分において、電線とシールド部との距離が近くなる虞がある。ところが、上記の構成によると、引離部が電線を全周に亘って覆う筒状をなしているので、電線とシールド部との距離を確実に確保することができる。 The following configuration is preferable as an embodiment of the present invention.
The said separation part is good also as a structure which has comprised the cylindrical shape which covers the said some electric wire over a perimeter.
For example, in the case of a separation part that covers a part of the electric wire, when the wire harness is routed, there is a possibility that the distance between the electric wire and the shield part becomes short in a part that is not covered by the separation part. . However, according to said structure, since the separation part has comprised the cylindrical shape which covers an electric wire over a perimeter, the distance of an electric wire and a shield part can be ensured reliably.
　前記電線は、複数の小径電線からなる束電線である構成としてもよい。
　大径電線を束ねた大径の束電線と、小径電線を束ねた小径の束電線とでは、断面積が同一の場合、小径の束電線の方が大径の束電線よりも電線の間の隙間を埋めるようにして電線をまとめることができ、小径の束電線の方が大径の束電線よりも最大外径を小さくすることができる。したがって、上記のような構成によると、ワイヤハーネスの軸心からシールド部の距離が同一の場合、大径電線を束ねる場合に比べて、電線とシールド部との間の距離を大きくし、ワイヤハーネスにおける電線とシールド部との間のキャパシタンスを小さくすることができる。これにより、ワイヤハーネスの共振周波数をさらに高周波側に移動させることができる。 The electric wire may be a bundled electric wire composed of a plurality of small-diameter electric wires.
If the cross-sectional area of the large-diameter bundled wire bundled with the large-diameter wire and the small-diameter bundled wire bundled with the small-diameter wire are the same, the small-diameter bundled wire is located between the wires than the large-diameter bundled wire. The wires can be bundled together so as to fill the gap, and the maximum outer diameter of the bundled wires of small diameter can be made smaller than that of the bundled wires of large diameter. Therefore, according to the above configuration, when the distance from the axis of the wire harness to the shield portion is the same, the distance between the wire and the shield portion is increased compared to the case of bundling large-diameter wires, and the wire harness The capacitance between the electric wire and the shield part can be reduced. Thereby, the resonant frequency of a wire harness can be moved to the high frequency side further.
　前記引離部は、加熱することにより発泡する発泡樹脂である構成としてもよい。
　このような構成によると、電線とシールド部との間に引離部を配した後、加熱して引離部を発泡させて膨張させることにより、シールド部を広げて電線とシールド部とを引き離すと共に、ワイヤハーネスの軸心に向かって各電線を集中させて複数の電線を小さくまとめることができる。すなわち、電線とシールド部とを引き離すことで電線とシールド部との間のキャパシタンスを小さくし、電線を集中させて複数の電線を小さく束ねることでワイヤハーネスのインダクタンスを小さくすることができる。これにより、ワイヤハーネスの共振周波数をさらに高周波側に移動させることができる。 The said separation part is good also as a structure which is a foaming resin which foams by heating.
According to such a configuration, after the separating portion is arranged between the electric wire and the shield portion, by heating and expanding the separating portion to expand, the shield portion is expanded and the electric wire and the shielding portion are separated. At the same time, the electric wires can be concentrated toward the axial center of the wire harness so that a plurality of electric wires can be made smaller. That is, by separating the electric wire and the shield part, the capacitance between the electric wire and the shield part is reduced, and by concentrating the electric wire and bundling a plurality of electric wires, the inductance of the wire harness can be reduced. Thereby, the resonant frequency of a wire harness can be moved to the high frequency side further.
　本発明によれば、ワイヤハーネスの長さを短くすることなく、ワイヤハーネスの共振周波数を高周波側に移動させることができる。 According to the present invention, the resonance frequency of the wire harness can be moved to the high frequency side without shortening the length of the wire harness.
実施形態１におけるワイヤハーネスの断面図Sectional drawing of the wire harness in Embodiment 1. 実施形態２におけるワイヤハーネスの断面図Sectional drawing of the wire harness in Embodiment 2. 実施形態３におけるワイヤハーネスの断面図Sectional drawing of the wire harness in Embodiment 3.
　＜実施形態１＞
　本発明の実施形態１について図１を参照して説明する。
　本実施形態は、車両に搭載されるインバータ（図示せず）と三相交流モータ（図示せず）との間に配索され、インバータから出力されるＵ相、Ｖ相、Ｗ相の三相交流電流を三相交流モータに供給するワイヤハーネス１０を例示している。
　ワイヤハーネス１０は、Ｕ相、Ｖ相、Ｗ相の各相の電流がそれぞれ流れる複数の高圧用電線２０と、複数の高圧用電線２０を一括して覆う内コルゲート（「引離部」の一例）３０と、内コルゲート３０の外面を覆うシールド部４０と、シールド部４０の外周を覆う外コルゲート５０とを備えて構成されている。 <Embodiment 1>
A first embodiment of the present invention will be described with reference to FIG.
This embodiment is arranged between an inverter (not shown) mounted on a vehicle and a three-phase AC motor (not shown), and is output from the inverter in three phases of U phase, V phase, and W phase. The wire harness 10 which supplies an alternating current to a three-phase alternating current motor is illustrated.
The wire harness 10 includes a plurality of high-voltage wires 20 through which currents of U-phase, V-phase, and W-phase respectively flow, and an inner corrugate (an example of a “separation part”) that collectively covers the plurality of high-voltage wires 20. ) 30, a shield part 40 that covers the outer surface of the inner corrugate 30, and an outer corrugate 50 that covers the outer periphery of the shield part 40.
　高圧用電線２０は、芯線の回りに絶縁被覆を被覆した小径の高圧用電線とされている。また、複数の高圧用電線２０は、全体の１／３（本実施形態では４本）がＵ相用電線２０Ａとされ、もう１／３がＶ相用電線２０Ｂ、残りの１／３がＷ相用電線２０Ｃとされている。
　言い換えると、Ｕ相、Ｖ相、Ｗ相の各相は小径の高圧用電線２０によって複数に分割された束電線として構成とされており、それぞれの束電線を１つにまとめることで、各相の高圧用電線２０が不規則に配置されている。 The high-voltage electric wire 20 is a small-diameter high-voltage electric wire in which an insulating coating is coated around the core wire. The plurality of high-voltage wires 20 are one-third (four in this embodiment) as U-phase wires 20A, one-third as V-phase wires 20B, and the remaining one-third as W. The phase wire 20C is used.
In other words, each phase of the U phase, the V phase, and the W phase is configured as a bundled electric wire that is divided into a plurality of pieces by the small-diameter high-voltage electric wire 20. The high-voltage electric wires 20 are irregularly arranged.
　内コルゲート３０は合成樹脂製であって、肉厚がほぼ均一な略円筒状をなしており、複数の高圧用電線２０を全長に亘って覆った形態をなしている。また、内コルゲート３０の内部には、高圧用電線２０の間にクリアランスＣＬ１を有した状態で複数の高圧用電線２０が挿通されている。 The inner corrugate 30 is made of a synthetic resin and has a substantially cylindrical shape with a substantially uniform thickness, and has a configuration in which a plurality of high-voltage wires 20 are covered over the entire length. In addition, a plurality of high-voltage wires 20 are inserted into the inner corrugate 30 with a clearance CL <b> 1 between the high-voltage wires 20.
　シールド部４０は、導電性を有する金属素線をメッシュ状に編み込んで筒状に形成した編組線であり、内コルゲート３０の外周面を全周に亘って覆うようにして内コルゲート３０の全長に亘って被せられている。
　すなわち、各高圧用電線２０とシールド部４０との間には、内コルゲート３０が介設された状態となっており、シールド部４０は、高圧用電線２０から少なくとも内コルゲート３０の肉厚分の距離だけ遠ざけられた状態（高圧用電線２０とシールド部４０との間に内コルゲート３０の肉厚分以上の距離が確保された状態）となっている。なお、本実施形態では、シールド部４０を編組線によって構成しているが、これに限らず、導電性を有する金属薄膜などによってシールド部を構成してもよい。 The shield part 40 is a braided wire formed in a cylindrical shape by knitting conductive metal strands in a mesh shape, and covers the entire outer periphery of the inner corrug 30 over the entire length of the inner corrug 30. It is covered.
That is, the inner corrugation 30 is interposed between each high-voltage electric wire 20 and the shield portion 40, and the shield portion 40 is at least as thick as the inner corrugate 30 from the high-voltage electric wire 20. It is in a state where the distance is increased (a state in which a distance equal to or greater than the thickness of the inner corrugate 30 is ensured between the high-voltage wire 20 and the shield part 40). In the present embodiment, the shield part 40 is constituted by a braided wire, but the shield part may be constituted by a conductive metal thin film or the like.
　外コルゲート５０は合成樹脂製であって、内コルゲート３０とほぼ同じ肉厚の略円筒状に形成されており、他の部材が接触するなどして、シールド部４０などが損傷することを防いでいる。また、外コルゲート５０の内径は、内コルゲート３０の外径よりも大きい略円筒状に形成されており、シールド部４０の外周を外コルゲート５０が覆うと、内コルゲート３０と外コルゲート５０との間にシールド部４０がクリアランスＣＬ２を有した状態で配されている。 The outer corrugate 50 is made of a synthetic resin and is formed in a substantially cylindrical shape having substantially the same thickness as the inner corrug 30, and prevents damage to the shield part 40 and the like due to contact with other members. Yes. Further, the inner diameter of the outer corrugated 50 is formed in a substantially cylindrical shape larger than the outer diameter of the inner corrugated 30. When the outer corrugated 50 covers the outer periphery of the shield part 40, the outer corrugated 50 is located between the inner corrugated 30 and the outer corrugated 50. The shield part 40 is arranged in a state having a clearance CL2.
　本実施形態のワイヤハーネス１０は、以上のような構成であって、ワイヤハーネス１０の製造方法を簡単に説明し、続いてその作用を説明する。
　まず、Ｕ相用電線２０Ａ、Ｖ相用電線２０Ｂ、Ｗ相用電線２０Ｃがそれぞれ同数本となる数の高圧用電線２０を準備し、これらの高圧用電線２０を内コルゲート３０内に挿通させる。このとき、内コルゲート３０の内部では、それぞれの高圧用電線２０が周囲にクリアランスＣＬ１を有した状態で挿通されている。 The wire harness 10 of the present embodiment is configured as described above, and a method for manufacturing the wire harness 10 will be briefly described, and the operation thereof will be described subsequently.
First, the same number of U-phase electric wires 20A, V-phase electric wires 20B, and W-phase electric wires 20C are prepared, and these high-voltage electric wires 20 are inserted into the inner corrugate 30. At this time, inside the inner corrugate 30, each high-voltage electric wire 20 is inserted with a clearance CL1 around it.
　次に、複数の高圧用電線２０が挿通された内コルゲート３０にシールド部４０を被せることにより、各高圧用電線２０がシールド部４０によってシールドされた状態となる。また、各高圧用電線２０とシールド部４０とが内コルゲート３０によって確実に引き離され、各高圧用電線２０とシールド部４０との間には、少なくとも内コルゲート３０の肉厚分の距離が確保された状態となる。
　最後に、シールド部４０に覆われた内コルゲート３０を外コルゲート５０内に挿通させることで、他の部材から高圧用電線２０やシールド部４０が保護されたワイヤハーネス１０が完成する。
　このように本実施形態によると、内コルゲート３０に高圧用電線２０を挿通させ、内コルゲート３０をシールド部４０および外コルゲート５０によって覆うだけで、容易にワイヤハーネス１０を製造することができる。 Next, the shield part 40 is put on the inner corrugate 30 through which the plurality of high-voltage electric wires 20 are inserted, whereby the high-voltage electric wires 20 are shielded by the shield part 40. Moreover, each high voltage electric wire 20 and the shield part 40 are reliably pulled apart by the inner corrugate 30, and at least a distance corresponding to the thickness of the inner corrugated 30 is secured between each high voltage electric wire 20 and the shield part 40. It becomes the state.
Finally, the inner corrug 30 covered with the shield part 40 is inserted into the outer corrugate 50, thereby completing the wire harness 10 in which the high-voltage wire 20 and the shield part 40 are protected from other members.
As described above, according to the present embodiment, the wire harness 10 can be easily manufactured simply by inserting the high-voltage wire 20 through the inner corrug 30 and covering the inner corrug 30 with the shield portion 40 and the outer corrug 50.
　以上のように、本実施形態によると、各高圧用電線２０とシールド部４０との間に両部材２０，４０を引き離すべく内コルゲート３０が介設され、各高圧用電線２０とシールド部４０とが少なくとも内コルゲート３０の肉厚分の距離だけ引き離されている。これにより、高圧用電線をシールド部によって直接覆った場合に比べて、高圧用電線２０とシールド部４０との間のキャパシタンスを小さくすることができる。 As described above, according to the present embodiment, the inner corrugation 30 is interposed between the high-voltage electric wires 20 and the shield portions 40 so as to separate the both members 20, 40. Are separated by at least a distance corresponding to the wall thickness of the inner corrugate 30. Thereby, compared with the case where the high voltage | pressure electric wire is directly covered by the shield part, the capacitance between the high voltage electric wire 20 and the shield part 40 can be made small.
　すなわち、ワイヤハーネスのインダクタンスをＬ（μＨ）、ワイヤハーネスのキャパシタンスをＣ（ｐＦ）とした場合、ハーネスの共振周波数ｆ（ＭＨｚ）は、１／（２π（ＬＣ）０．５）で表されるから、本実施形態によるとワイヤハーネスのキャパシタンスを小さくすることで、ワイヤハーネスの共振周波数を高周波側に移動させることができる。これにより、ワイヤハーネスの長さを短くすることなく、スイッチング波形の周波数成分が共振によって増幅することを回避し、サージ電圧を抑制することができる。 That is, when the inductance of the wire harness is L (μH) and the capacitance of the wire harness is C (pF), the resonance frequency f (MHz) of the harness is represented by 1 / (2π (LC) 0.5 ). Thus, according to the present embodiment, the resonance frequency of the wire harness can be moved to the high frequency side by reducing the capacitance of the wire harness. Thereby, without shortening the length of a wire harness, it can avoid that the frequency component of a switching waveform amplifies by resonance, and can suppress a surge voltage.
　また、例えば、内コルゲートが高圧用電線の一部を覆うワイヤハーネスの場合、ワイヤハーネスが配索される際に、高圧用電線とシールド部とが直接接触する虞がある。ところが、本実施形態によると、各高圧用電線２０が円筒状の内コルゲート３０によって全周に亘って一括して覆われているから、高圧用電線２０とシールド部４０とを確実に遠ざけて、両部材２０，４０間の距離を確保することができる。 Also, for example, in the case where the inner corrugate is a wire harness that covers a part of the high-voltage electric wire, there is a possibility that the high-voltage electric wire and the shield part may come into direct contact when the wire harness is routed. However, according to the present embodiment, since the high-voltage electric wires 20 are collectively covered by the cylindrical inner corrug 30 over the entire circumference, the high-voltage electric wires 20 and the shield part 40 are reliably moved away, The distance between both members 20 and 40 can be secured.
　ところで、Ｕ相、Ｖ相、Ｗ相がそれぞれ大径の一本の高圧用電線で構成される大径の束電線と、Ｕ相、Ｖ相、Ｗ相がそれぞれ複数本の高圧用電線で構成される小径の束電線とでは、断面積が同一の場合、小径の束電線の方が大径の束電線よりも高圧用電線の間の隙間を埋めるようにして高圧用電線をまとめることができる。
　すなわち、本実施形態によると、Ｕ相、Ｖ相、Ｗ相がそれぞれ複数本の高圧用電線２０で構成されているから、各相がそれぞれ大径の一本の高圧用電線で構成される場合に比べて、最大外径を小さくなるように高圧用電線２０を配置することができ、各高圧用電線２０とシールド部４０との間の距離を大きく確保することができる。これにより、ワイヤハーネス１０における高圧用電線２０とシールド部４０との間のキャパシタンスをさらに小さくし、ワイヤハーネス１０の共振周波数を確実に高周波側に移動させることができる。 By the way, the U-phase, V-phase, and W-phase are each composed of a large-diameter bundled wire composed of one large-diameter high-voltage wire, and the U-phase, V-phase, and W-phase are each composed of a plurality of high-voltage wires. If the cross-sectional area of the bundled small-diameter wire is the same, the bundled high-voltage wires can be bundled so that the small-diameter bundled wires fill the gaps between the high-voltage wires rather than the large-diameter bundled wires. .
That is, according to the present embodiment, the U phase, the V phase, and the W phase are each composed of a plurality of high-voltage wires 20, and therefore each phase is composed of a single high-voltage wire having a large diameter. As compared with the above, the high-voltage electric wires 20 can be arranged so as to reduce the maximum outer diameter, and a large distance between each high-voltage electric wire 20 and the shield part 40 can be ensured. Thereby, the capacitance between the high voltage electric wire 20 and the shield part 40 in the wire harness 10 can be further reduced, and the resonance frequency of the wire harness 10 can be reliably moved to the high frequency side.
　さらに、本実施形態によると、高圧用電線２０を内コルゲート３０内に挿通させ、この内コルゲート３０をシールド部４０と外コルゲート５０によって覆うことで、容易にワイヤハーネス１０を完成させることができるので、モータコイルの絶縁被覆を加工したり、サージ電圧抑制回路を設けたりする場合に比べて、加工費が増加することを抑制することができる。 Further, according to the present embodiment, the wire harness 10 can be easily completed by inserting the high-voltage electric wire 20 into the inner corrug 30 and covering the inner corrug 30 with the shield portion 40 and the outer corrug 50. As compared with the case where the insulation coating of the motor coil is processed or a surge voltage suppression circuit is provided, it is possible to suppress an increase in processing cost.
　＜実施形態２＞
　次に、本発明の実施形態２について図２を参照して説明する。
　実施形態２のワイヤハーネス１１０は、実施形態１における内コルゲート３０を変更したものであって、実施形態１と共通する構成、作用、および効果については重複するため、その説明を省略する。また、実施形態１と同じ構成については同一の符号を用いるものとする。 <Embodiment 2>
Next, Embodiment 2 of the present invention will be described with reference to FIG.
The wire harness 110 according to the second embodiment is a modification of the inner corrugated body 30 according to the first embodiment, and the configuration, operation, and effects common to those in the first embodiment are duplicated, and thus the description thereof is omitted. The same reference numerals are used for the same configurations as those in the first embodiment.
　実施形態２の内コルゲート１３０は、略円筒状の内側チューブ１３１と、内側チューブ１３１の外周面を覆うように略円筒状に形成された外側チューブ１３２と、内側チューブ１３１と外側チューブ１３２との間に充填された発泡樹脂１３３とから構成されている。
　内側チューブ１３１および外側チューブ１３２は、柔軟に変形可能とされており、発泡樹脂１３３は、加熱されることで発泡する樹脂とされている。
　したがって、複数の高圧用電線２０が挿通された内コルゲート１３０をシールド部４０および外コルゲート５０によって覆った後、発泡樹脂１３３を加熱して発泡させると、高圧用電線２０とシールド部４０との間で内コルゲート１３０が膨張し、シールド部４０が外側チューブ１３２によって押し広げられて外コルゲート５０の内周面に押しつけられる。また、各高圧用電線２０が内側チューブ１３１によってワイヤハーネス１１０の軸心に向かって押圧される。 The inner corrugated body 130 of the second embodiment includes a substantially cylindrical inner tube 131, an outer tube 132 formed in a substantially cylindrical shape so as to cover the outer peripheral surface of the inner tube 131, and between the inner tube 131 and the outer tube 132. And a foamed resin 133 filled in the container.
The inner tube 131 and the outer tube 132 can be flexibly deformed, and the foamed resin 133 is a resin that foams when heated.
Therefore, when the foamed resin 133 is heated and foamed after covering the inner corrug 130 through which the plurality of high voltage electric wires 20 are inserted with the shield part 40 and the outer corrugated 50, the gap between the high voltage electric wire 20 and the shield part 40 is obtained. Thus, the inner corrugated 130 is expanded, and the shield portion 40 is pushed and spread by the outer tube 132 and is pressed against the inner peripheral surface of the outer corrugated 50. Further, each high-voltage electric wire 20 is pressed toward the axis of the wire harness 110 by the inner tube 131.
　つまり、本実施形態によると、内コルゲート１３０を膨張させることで高圧用電線２０とシールド部４０とを引き離すと共に、各高圧用電線２０をワイヤハーネス１１０の軸心に向かって集中させて、複数の高圧用電線２０を小さく束ねることができる。すなわち、高圧用電線２０とシールド部４０とを引き離すことで高圧用電線２０とシールド部４０との間のキャパシタンスを小さくすると共に、複数の高圧用電線２０をワイヤハーネス１１０の軸心に向かって小さく束ねることでワイヤハーネス１１０のインダクタンスを小さくすることができる。これにより、ワイヤハーネス１１０の共振周波数をさらに高周波側に移動させることができる。 That is, according to the present embodiment, the inner corrugate 130 is expanded to separate the high-voltage electric wire 20 and the shield portion 40, and the high-voltage electric wires 20 are concentrated toward the axis of the wire harness 110. The high-voltage electric wire 20 can be bundled small. That is, by separating the high-voltage electric wire 20 and the shield part 40, the capacitance between the high-voltage electric wire 20 and the shield part 40 is reduced, and the plurality of high-voltage electric wires 20 are reduced toward the axis of the wire harness 110. By bundling, the inductance of the wire harness 110 can be reduced. Thereby, the resonance frequency of the wire harness 110 can be moved further to the high frequency side.
　＜実施形態３＞
　次に、本発明の実施形態３について図３を参照して説明する。
　実施形態３のワイヤハーネス２１０は、実施形態１における高圧用電線の形状を変更したものであって、実施形態１と共通する構成、作用、および効果については重複するため、その説明を省略する。また、実施形態１と同じ構成については同一の符号を用いるものとする。 <Embodiment 3>
Next, Embodiment 3 of the present invention will be described with reference to FIG.
The wire harness 210 of the third embodiment is obtained by changing the shape of the high-voltage electric wire in the first embodiment, and the configuration, operation, and effect common to the first embodiment are duplicated, and thus the description thereof is omitted. The same reference numerals are used for the same configurations as those in the first embodiment.
　実施形態３の高圧用電線は、Ｕ相、Ｖ相、Ｗ相の相毎に平板状のフラットケーブル２２０によって構成されている。
　各フラットケーブル２２０は、芯線２２１を横方向に複数並べて、これらの芯線２２１が絶縁被覆２２２によって覆われた形態をなしており、Ｕ相、Ｖ相、Ｗ相のフラットケーブル２２０が上下方向に積層されて内コルゲート３０内に挿通されている。したがって、フラットケーブル２２０の各芯線２２１は、上下左右に整列された状態で内コルゲート３０内に挿通されている。 The high-voltage electric wire of the third embodiment is configured by a flat flat cable 220 for each of the U phase, the V phase, and the W phase.
Each flat cable 220 has a configuration in which a plurality of core wires 221 are arranged in the horizontal direction and these core wires 221 are covered with an insulating coating 222, and U-phase, V-phase, and W-phase flat cables 220 are stacked in the vertical direction. And is inserted into the inner corrugate 30. Accordingly, the core wires 221 of the flat cable 220 are inserted into the inner corrugated 30 in a state of being aligned vertically and horizontally.
　＜他の実施形態＞
　本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれる。
　（１）上記実施形態１および実施形態２では、Ｕ相、Ｖ相、Ｗ相の各相を小径の高圧用電線２０によってそれぞれ分割した構成としたが、本発明はこのような態様に限定されるものではなく、例えば、各相を一本の高圧用電線によって構成してもよい。
　（２）上記実施形態１では、高圧用電線２０が周囲にクリアランスＣＬ１を有した状態で内コルゲート３０内に挿通された構成としたが、本発明はこのような態様に限定されるものではなく、例えば、高圧用電線が結束バンドなどによって束ねられて内コルゲート内に挿通される構成にしてもよい。
　（３）上記実施形態１および実施形態３では、内コルゲート３０と外コルゲート５０の厚さ寸法をほぼ同じ寸法に構成したが、本発明はこのような態様に限定されるものではなく、例えば、内コルゲートが外コルゲートよりも肉厚に構成されてもよい。 <Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In Embodiment 1 and Embodiment 2 described above, the U-phase, V-phase, and W-phase are each divided by the small-diameter high-voltage electric wire 20, but the present invention is limited to such an embodiment. For example, each phase may be constituted by a single high-voltage wire.
(2) In the first embodiment, the high-voltage electric wire 20 is inserted into the inner corrugate 30 with the clearance CL1 around it. However, the present invention is not limited to such an embodiment. For example, a configuration may be adopted in which high-voltage electric wires are bundled by a binding band or the like and inserted into the inner corrugation.
(3) In Embodiment 1 and Embodiment 3 described above, the inner corrugated body 30 and the outer corrugated body 50 are configured to have substantially the same thickness, but the present invention is not limited to such an embodiment. The inner corrugate may be configured to be thicker than the outer corrugate.
１０，１１０，２１０：ワイヤハーネス
２０，２２０：高圧用電線(小径電線、電線)
３０，１３０：内コルゲート(引離部)
４０：シールド部
１３３：発泡樹脂 10, 110, 210: Wire harness 20, 220: High-voltage wire (small-diameter wire, wire)
30, 130: inner corrugation (separating part)
40: Shield part 133: Foamed resin

Claims (4)

  1. 　筒状のシールド部によって複数の電線を一括して覆うワイヤハーネスであって、
    　複数の前記電線と前記シールド部との間には、前記シールド部から複数の前記電線を引き離すべく合成樹脂製の引離部が介設されているワイヤハーネス。     A wire harness that covers a plurality of electric wires together by a cylindrical shield part,
    A wire harness in which a synthetic resin separating portion is interposed between the plurality of electric wires and the shield portion so as to separate the plurality of electric wires from the shield portion.
  2. 　前記引離部は、複数の前記電線を全周に亘って覆う筒状をなしている請求項１記載のワイヤハーネス。 The wire harness according to claim 1, wherein the separating portion has a cylindrical shape covering the plurality of electric wires over the entire circumference.
  3. 　前記電線は、複数の小径電線からなる束電線である請求項１または請求項２記載のワイヤハーネス。 The wire harness according to claim 1 or 2, wherein the electric wire is a bundled electric wire composed of a plurality of small-diameter electric wires.
  4. 　前記引離部は、加熱することにより発泡する発泡樹脂である請求項１乃至請求項３の何れか一項に記載のワイヤハーネス。 The wire harness according to any one of claims 1 to 3, wherein the separation portion is a foamed resin that foams when heated.
PCT/JP2013/082916 2012-12-27 2013-12-09 Wire harness WO2014103674A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-283812 2012-12-27
JP2012283812A JP2014128130A (en) 2012-12-27 2012-12-27 Wire harness

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Publication number Priority date Publication date Assignee Title
JP6727823B2 (en) * 2016-02-01 2020-07-22 三菱航空機株式会社 Wire protector

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02215013A (en) * 1989-02-15 1990-08-28 Sumitomo Electric Ind Ltd Shielded electric wire
JPH05225839A (en) * 1992-02-18 1993-09-03 Yazaki Corp Manufacture of foam insulated coaxial cable
JP2000040423A (en) * 1998-07-21 2000-02-08 Hirakawa Hewtech Corp Shield wire for signal transmission

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02215013A (en) * 1989-02-15 1990-08-28 Sumitomo Electric Ind Ltd Shielded electric wire
JPH05225839A (en) * 1992-02-18 1993-09-03 Yazaki Corp Manufacture of foam insulated coaxial cable
JP2000040423A (en) * 1998-07-21 2000-02-08 Hirakawa Hewtech Corp Shield wire for signal transmission

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