WO2013168632A1 - Faisceau de câbles - Google Patents

Faisceau de câbles Download PDF

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Publication number
WO2013168632A1
WO2013168632A1 PCT/JP2013/062577 JP2013062577W WO2013168632A1 WO 2013168632 A1 WO2013168632 A1 WO 2013168632A1 JP 2013062577 W JP2013062577 W JP 2013062577W WO 2013168632 A1 WO2013168632 A1 WO 2013168632A1
Authority
WO
WIPO (PCT)
Prior art keywords
shield
shield member
wire harness
members
wire
Prior art date
Application number
PCT/JP2013/062577
Other languages
English (en)
Japanese (ja)
Inventor
康志 井谷
不二夫 薗田
青山　直樹
裕一 木本
佳典 杉本
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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 WO2013168632A1 publication Critical patent/WO2013168632A1/fr

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Classifications

    • 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
    • H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings
    • 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
    • H02G3/0487—Tubings, i.e. having a closed section with a non-circular cross-section
    • 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

Definitions

  • the present invention relates to a wire harness including a conductive shield member surrounding a power cable.
  • a wire harness installed in a vehicle typified by a car may include a conductive shield member that surrounds the periphery of a wire and shields noise electromagnetic waves.
  • the wire passed through the hollow portion of the shield member is usually a non-shielded wire.
  • An unshielded electric wire is an insulated wire which is not covered by shield members, such as a braided wire.
  • a wire harness of a vehicle may be provided with a braided wire formed of a cylindrically woven metal wire as a shield member.
  • the braided wire is a cylindrical shield member having flexibility which can be deformed according to the deformation of the electric wire.
  • a wire harness laid in a place exposed to the outside such as a lower surface (under floor) of a bottom plate in an automobile includes a metal pipe which is a cylindrical protective member surrounding the periphery of an electric wire.
  • the metal pipe is a member that protects the electric wire from foreign matter such as gravel that splashes from the road, and is also a shield member that shields noise electromagnetic waves.
  • both end portions of the electric wire are wired into the housing from the opening of a metal housing that accommodates a device to be connected.
  • the shield member is usually electrically connected to the metal casing at both ends.
  • the metal casing is electrically connected to a reference potential body such as a car body, so the shield member is grounded via the casing.
  • the shield member and the reference potential body form a closed loop with another conductive member such as a housing.
  • the electric wire which a shield member encloses is a power cable which transmits alternating current
  • an induction current flows into the closed loop formed by a shield member and a reference electric potential object.
  • the induced current flowing through the shield member increases as the current value and frequency of the alternating current flowing through the power cable increase.
  • a three-phase motor is adopted, and a wire harness connected to the three-phase motor is provided with three power cables for conducting symmetrical three-phase alternating current.
  • the phase shift of electricity due to electromagnetic induction generated for each alternating current electricity of each phase is the same.
  • the term “three-phase alternating current” when used without particular explanation, it means “symmetrical three-phase alternating current”, that is, three-phase alternating current whose phase shift (120 degrees) is the same.
  • a shield member that is grounded at both ends and collectively surrounds three power cables that conduct three-phase alternating current is referred to as a collectively enclosed shield member.
  • a shield member which is grounded at both ends and individually surrounds each of the three power cables conducting three-phase alternating current is referred to as a separate surrounding shield member.
  • the encircling shield type shielding member when adopted, the three-phase induction currents mutually cancel each other, so that the problem of an excess current flowing in the shielding member does not occur, but a heavy and large shielding member is required. Because it is inconvenient to handle heavy and large shield members, it is desirable that no such shield members be employed. In addition, if a collective surrounding shield member made of a thin and coarse conductive member is adopted to reduce the weight of the shield member, the shielding performance of high frequency noise is mainly deteriorated.
  • the object of the present invention is to effectively shield noise electromagnetic waves generated in a power cable conducting symmetrical three-phase alternating current, and to allow excessive induced current to flow in the shield member without adopting a heavy and large shield member. It is to prevent.
  • a wire harness includes the components shown below.
  • the first component is three power cables that conduct symmetrical three-phase alternating current electricity.
  • the second component is three conductive first shield members arranged in parallel at intervals and individually surrounding the periphery of each of the three power cables.
  • the third component is a conductive member that is coarser than the first shield member, and has grounded portions electrically connected to the reference potential body at both ends, It is a second shield member that collectively surrounds the three first shield members in a state of being electrically insulated from the first shield member.
  • a wire harness according to a second aspect of the present invention is an aspect of the wire harness according to the first aspect.
  • the first shield member is made of a material having higher electric conductivity than the second shield member
  • the second shield member is made of a magnetic material.
  • a wire harness according to a third aspect of the present invention is an aspect of the wire harness according to the first or second aspect.
  • the first shield member is a metal pipe.
  • first shield members are members which are not electrically connected to the second shield member and the reference potential body, and are fine conductive members such as metal pipes. Therefore, the first shield member does not function as an electrostatic shield but shields high frequency electromagnetic waves. Also, although the first shield member generates a little heat because it consumes high frequency electromagnetic waves as an eddy current, it does not cause excessive heat generation due to electromagnetic induction because it is not grounded.
  • the second shield member grounded at both ends performs the functions of an electrostatic shield and a magnetic shield.
  • the second shield member which is a coarse conductive member, can not shield electromagnetic waves of short wavelength, that is, high frequency.
  • high frequency electromagnetic waves are shielded by the first shield member.
  • the second shield member that collectively encloses the three power cables conducting the symmetrical three-phase alternating current the three-phase electricitys of different phases generated by the electromagnetic induction are mixed and mutually cancel each other. Therefore, the flow of an excessive induced current to the second shield member is prevented.
  • each first shield member is relatively thin and light
  • the second shield member which is a coarse conductive member, is also relatively light. Therefore, the inconvenience of having to handle a heavy and large shield member does not occur.
  • noise electromagnetic waves generated in the power cable for conducting symmetrical three-phase alternating current are effectively shielded, and a heavy and large shield member is adopted. It is possible to prevent an excessive induced current from flowing in the shield member without doing so.
  • the first shield member having high electrical conductivity is likely to cause eddy current due to high frequency electromagnetic waves, high frequency noise can be shielded more effectively.
  • the performance of the magnetic shield by the second shield member is enhanced by adopting the second shield member made of a magnetic material.
  • the first shield member is a metal pipe with a high density of conductors, high frequency noise can be shielded more effectively.
  • FIG. 8 is an exploded perspective view of a portion of the holding member in the wire harness 10; It is a sectional view of the 2nd shield member with which wire harness 10 is provided. It is a top view of the wire harness 10 laid by the vehicle.
  • FIG. 7 is a rear view of an end of the wire harness 10 fixed to a housing.
  • FIG. 2 is a schematic view of a basic structure of a wire harness 10;
  • the wire harness 10 includes at least three power cables 9, at least three first shield members 1 and one second shield member 2. Furthermore, the wire harness 10 also includes at least one clamping member 3.
  • the power cable 9 is an insulated wire constituted of a core wire 91 made of a conductive material and an insulation coating 92 made of an insulating material covering the periphery of the core wire 91.
  • the terminal fitting 8 is connected to the core wire 91 at the end of the power cable 9.
  • the wire harness 10 includes three power cables 9 arranged in parallel. However, it is also conceivable that the wire harness 10 includes two or more sets of three power cables 9.
  • the wire harness 10 further includes a cable holding member for holding the ends of the three power cables 9 in a fixed positional relationship.
  • the cable holding member holds the ends of the three power cables 9 arranged in parallel in a fixed positional relationship, and electrically insulates the three power cables 9 from each other.
  • the cable holding member is a nonconductive synthetic resin member.
  • the cable holding member is a member formed by insert molding using the plurality of power cables 9 as insert members.
  • the first shield members 1 are conductive members arranged in parallel at intervals, and individually surrounding the power cables 9. Accordingly, the wire harness 10 includes the same number of first shield members 1 as the number of power cables 9. In the example shown in FIGS. 1 and 2, the wire harness 10 includes three first shield members 1 arranged in parallel. However, it is also conceivable that the wire harness 10 includes two or more sets of three first shield members 1 according to the number of power cables 9.
  • the first shield member 1 is a conductive member finer in diameter than the second shield member 2 described later, that is, a member having a high ratio of the volume of the conductor to the entire volume including the gap between the conductors.
  • the first shield member 1 is a member in which the ratio of the volume of the gap between the conductors to the entire volume is smaller than that of the second shield member 2.
  • that the ratio of the volume of the clearance gap between conductors is small also includes that the ratio of the volume of the clearance gap between conductors is zero.
  • the first shield member 1 is a metal pipe member surrounding the power cable 9.
  • the pipe member is made of, for example, a metal-based material such as copper, stainless steel, or aluminum. It is conceivable that a plated layer or a layer of paint is formed on the surface of the pipe member as required.
  • the first shield member 1 is a braided wire formed of a cylindrically woven metal wire.
  • the braided wire is made of a wire mainly composed of a metal such as copper, stainless steel or aluminum.
  • the metal wire forming the braided wire is braided with as fine an eye as possible, that is, it is braided such that the gap is as small as possible. desirable.
  • the 1st shield member 1 is electrically insulated with respect to the 2nd shield member 2 so that it may mention later. Furthermore, in a state in which the wire harness 10 is laid in the vehicle, the first shield member 1 is not electrically connected to the reference potential body such as the body of the vehicle.
  • the holding member 3 holds the three first shield members 1 collectively and holds the three first shield members 1 in a state of being electrically insulated and arranged in parallel at intervals.
  • the holding members 3 are attached to at least one intermediate portion between both ends in the longitudinal direction of the three first shield members 1.
  • the holding member 3 is a non-conductive member, and is, for example, a molded member of synthetic resin.
  • the holding member 3 is made of a material such as polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polyethylene terephthalate (PET), or polyamide (PA).
  • the holding member 3 is configured of a first holding member 3 a and a second holding member 3 b which are combined with the three first shield members 1 interposed therebetween. Further, three grooves 31 are formed in each of the first holding member 3a and the second holding member 3b.
  • the groove portion 31 is a groove-shaped portion in which each of the three first shield members 1 surrounding the periphery of each of the three power cables 9 is fitted.
  • Each of the first shield members 1 is sandwiched between the groove 31 of the first holding member 3a and the groove 31 of the second holding member 3b facing each other. As a result, the three first shield members 1 through which the power cables 9 pass are held spaced apart and arranged in parallel and electrically isolated from each other.
  • the 1st clamping member 3a and the 2nd clamping member 3b are connected by the coupler in the state which pinched
  • the connector is a screw 51 and a nut 52. Therefore, in the first holding member 3a and the second holding member 3b shown in FIG. 2, screw holes 32 through which connection screws 51 are formed are formed.
  • the holding members 3 are attached to both ends of the three first shield members 1 arranged in parallel and at least one intermediate portion between the ends.
  • the second shield member 2 is a conductive member that collectively surrounds the three first shield members 1 in a state of being electrically insulated from the three first shield members 1. Further, the second shield member 2 is a conductive member that is coarser than the first shield member 1, that is, a member having a low ratio of the volume of the conductor to the entire volume including the gap between the conductors. In other words, the second shield member 2 is a member in which the ratio of the volume of the gap between the conductors to the entire volume is larger than that of the first shield member 1.
  • the second shield member 2 is a metal cloth which is a woven fabric of metal threads.
  • the metal cloth is formed in a tubular shape by being wound around the three first shield members 1 individually surrounding each of the three power cables 9.
  • the metal cloth is, for example, a cloth having a mesh structure in which yarns of a metal containing copper as a main component cross in a longitudinal direction and a transverse direction. Moreover, the metal cloth may have a structure in which a flexible film made of a resin material is attached to a metal yarn cloth. A gap is formed between metal threads (conductors) in the metal cloth.
  • the metal thread forming the metal cloth is, for example, mainly composed of a metal such as iron, copper, stainless steel or aluminum.
  • the 2nd shield member 2 is a braided wire comprised with the wire of the metal braided cylindrically.
  • the braided wire is made of a wire mainly composed of a metal such as iron, copper, stainless steel or aluminum.
  • the metal wire forming the braided wire is braided with a relatively coarse mesh, that is, braided so as to increase the gap.
  • the second shield member 2 made of a braided wire or metal cloth has conductivity and flexibility.
  • the second shield member 2 is formed of a thin metal plate which is formed into a tubular shape, in which a plurality of holes or a plurality of slits are formed.
  • the second shield member 2 is integrally formed with the insulating sheet 20 which electrically insulates the second shield member 2 from the first shield member 1. .
  • an insulating sheet 20 made of a conductive material is adhered to the inner side surface of the second shield member 2.
  • the insulating sheet 20 is, for example, a sheet-like member made of a nonconductive synthetic resin mainly composed of polyethylene terephthalate (PET) or polycarbonate (PC). It is also conceivable that the insulating sheet 20 is not adhered to the second shield member 2.
  • the second shield member 2 has grounded portions 21 electrically connected to the reference potential body 70 at both ends in the longitudinal direction.
  • the reference potential body 70 is, for example, a body of a metal vehicle.
  • the first shield member 1 is preferably made of a material having a higher electrical conductivity than the second shield member 2.
  • the first shield member 1 is a metal whose main component is copper or the like having a high electrical conductivity.
  • the second shield member 2 is made of a magnetic material such as iron.
  • the two grounded portions 21 in the second shield member 2 are electrically connected to the reference potential body 70 via, for example, the metal bracket member 4 and the metal housing 7.
  • the grounded portion 21 of the second shield member 2 is placed on the outside of the sandwiching members 3 provided at the end portions of the three first shield members 1.
  • the bracket member 4 also has a frame portion 41 and a flange portion 42.
  • the frame portion 41 of the bracket member 4 is a portion which is further covered on the outside of the grounded portion 21 which is covered on the holding member 3.
  • the frame portion 41 is fixed to the frame portion 41 of the bracket member 4 in a state of being in close contact with the grounded portion 21 of the second shield member 2 placed on the holding member 3 by being tightened by, for example, the caulking metal fitting 40 .
  • the flange portion 42 of the bracket member 4 is a portion fixed to the edge of the opening for introducing the power cable 9 in the housing 7 by a screw or the like.
  • the grounded portion 21 of the second shield member 2 is sandwiched between the holding member 3 on the inner side and the frame portion 41 of the bracket member 4 on the outer side by the structure shown in FIGS. Connected. Further, the bracket member 4 is electrically connected to the housing 7 by fixing its flange portion 42 to the housing 7. Further, the housing 7 is electrically connected to a reference potential body 70 such as a vehicle body.
  • the grounded portion 21 of the second shield member 2 is electrically connected to the reference potential body 70 via the bracket member 4 and the housing 7. Therefore, the second shield member 2 and the reference potential body 70 form an electrical closed loop with other conductive members such as the housing 7.
  • the grounded portion 21 of the second shield member 2 and the housing 7 are connected by the bracket member 4 and the caulking metal fitting 40.
  • the grounded portion 21 and the housing 7 are connected by a structure different from the example shown in FIGS.
  • FIG. 6 is a schematic view of the basic structure of the wire harness 10.
  • the three power cables 9 for conducting symmetrical three-phase alternating current are individually surrounded by three first shield members 1 arranged in parallel at intervals.
  • the three first shield members 1 are not grounded.
  • one second shield member 2 is a conductive member that is coarser than the first shield member 1.
  • the second shield members 2 collectively surround the three first shield members 1 in a state of being electrically insulated from the three first shield members 1.
  • the second shield member 2 has grounded portions 21 electrically connected to the reference potential body 70 at both ends thereof. Therefore, the second shield member 2 and the reference potential body 70 form an electrical closed loop together with the bracket member 4 and the housing 7.
  • first shield members 1 are members which are not electrically connected to the second shield member 2 and the reference potential body 70, and are fine conductive members such as metal pipes. Therefore, the first shield member 1 does not function as an electrostatic shield, but shields high frequency electromagnetic waves. Also, although the first shield member 1 generates a little heat because it consumes high frequency electromagnetic waves as an eddy current, it does not cause excessive heat generation due to electromagnetic induction because it is not grounded.
  • the second shield member 2 grounded at both ends performs the functions of an electrostatic shield and a magnetic shield.
  • the second shield member 2 which is a coarse conductive member can not shield an electromagnetic wave having a short wavelength, that is, an electromagnetic wave having a high frequency.
  • high frequency electromagnetic waves are shielded by the first shield member 1.
  • the second shield member 2 which collectively surrounds the three power cables 9 conducting the symmetrical three-phase alternating current the three-phase electricitys of different phases generated by the electromagnetic induction are mixed and mutually cancel each other. . Therefore, the flow of an excessive induced current to the second shield member 2 is prevented.
  • each of the first shield members 1 is relatively thin and light, and the second shield member 2 which is a coarse conductive member is also relatively light. Therefore, the inconvenience of having to handle a heavy and large shield member does not occur.
  • the first shield member 1 is a member having a high electric conductivity such as copper, an eddy current is easily generated in the first shield member 1 due to the high frequency electromagnetic wave. Therefore, high frequency noise can be shielded more effectively by the first shield member 1.
  • the second shield member 2 made of a magnetic material is adopted, the performance of the magnetic shield by the second shield member 2 is enhanced.
  • the first shield member 1 is a metal pipe with a high density of conductors, high frequency noise can be shielded more effectively.
  • the holding member 3 is configured by a first holding member 3a and a second holding member 3b connected by a screw 51 and a nut 52.
  • the first holding member 3a and the second holding member 3b have a structure that can be connected without using a connecting tool such as the screw 51.
  • the first holding member 3a and the second holding member 3b are connected by a welding or locking mechanism or the like.
  • first holding member 3a and the second holding member 3b are integrally formed by having a structure in which they are connected at one end of each.
  • the three first shield members 1 are arranged side by side, that is, arranged in three dimensions rather than arranged in two dimensions.
  • the three first shield members 1 are arranged in parallel at the position at the apex of an equilateral triangle when viewed from their longitudinal direction.

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

Abstract

L'invention permet de faire efficacement écran à des ondes électromagnétiques de bruit qui se produisent sur un câble d'alimentation, et d'empêcher le passage d'une quantité excessive de courant d'induction à travers l'élément de blindage. Un faisceau de câbles comprend trois câbles d'alimentation pour conduire un courant électrique symétrique triphasé en CA, trois premiers éléments de blindage entourant individuellement la périphérie des trois câbles électriques, et un second élément de blindage pour entourer collectivement la périphérie des trois premiers éléments de blindage tandis que le second élément de blindage est isolé électriquement des trois premiers éléments de blindage. Le second élément de blindage comprend un grain qui est plus grossier que celui des premiers éléments blindage et comprend une partie de mise à la terre sur les deux extrémités.
PCT/JP2013/062577 2012-05-10 2013-04-30 Faisceau de câbles WO2013168632A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012108182A JP2013235749A (ja) 2012-05-10 2012-05-10 ワイヤハーネス
JP2012-108182 2012-05-10

Publications (1)

Publication Number Publication Date
WO2013168632A1 true WO2013168632A1 (fr) 2013-11-14

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PCT/JP2013/062577 WO2013168632A1 (fr) 2012-05-10 2013-04-30 Faisceau de câbles

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JP (1) JP2013235749A (fr)
WO (1) WO2013168632A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3373395A1 (fr) * 2017-03-07 2018-09-12 Yazaki Corporation Unité conductrice

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6149800B2 (ja) * 2014-05-15 2017-06-21 住友電装株式会社 シールド導電路

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6489108A (en) * 1987-07-31 1989-04-03 Gen Electric Cable assembly for ellectrical signal transmitting system
JPH0412214U (fr) * 1990-05-18 1992-01-31
JPH05325658A (ja) * 1992-05-26 1993-12-10 Showa Electric Wire & Cable Co Ltd 電磁遮蔽ケーブル
US20080135275A1 (en) * 2006-11-10 2008-06-12 Peter Zamzow Electrical connection line for an electrical unit of a motor vehicle
JP2009135240A (ja) * 2007-11-29 2009-06-18 Furukawa Electric Co Ltd:The 電線のシールド構造
JP2011178324A (ja) * 2010-03-02 2011-09-15 Sumitomo Wiring Syst Ltd ワイヤハーネスの配索構造

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6489108A (en) * 1987-07-31 1989-04-03 Gen Electric Cable assembly for ellectrical signal transmitting system
JPH0412214U (fr) * 1990-05-18 1992-01-31
JPH05325658A (ja) * 1992-05-26 1993-12-10 Showa Electric Wire & Cable Co Ltd 電磁遮蔽ケーブル
US20080135275A1 (en) * 2006-11-10 2008-06-12 Peter Zamzow Electrical connection line for an electrical unit of a motor vehicle
JP2009135240A (ja) * 2007-11-29 2009-06-18 Furukawa Electric Co Ltd:The 電線のシールド構造
JP2011178324A (ja) * 2010-03-02 2011-09-15 Sumitomo Wiring Syst Ltd ワイヤハーネスの配索構造

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3373395A1 (fr) * 2017-03-07 2018-09-12 Yazaki Corporation Unité conductrice
US10355372B2 (en) 2017-03-07 2019-07-16 Yazaki Corporation Conductor unit

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