JP2013240204A - Wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shield noise electromagnetic waves generated in a power cable conducting symmetrical three-phase AC electricity effectively, and to prevent an excessive induction current from flowing through a shield member without employing a heavy and large shield member.SOLUTION: A wire harness 10 includes three power cables 9 conducting symmetrical three-phase AC electricity, three conductive first shield members 1 surrounding the periphery of the three power cables 9 individually, and a second shield member 2 surrounding the periphery of the three first shield members 1 collectively in contact therewith. The second shield member 2 is a conductive member rougher than the first shield member 1.

Description

  The present invention relates to a wire harness including a conductive shield member surrounding a power cable.

  2. Description of the Related Art Conventionally, a wire harness laid on a vehicle typified by an automobile may include a conductive shield member that surrounds an electric wire and shields noise electromagnetic waves. The electric wire passed through the hollow portion of the shield member is usually a non-shielded electric wire. An unshielded electric wire is an insulated wire that is not covered with a shield member such as a braided wire.

  For example, as shown in Patent Document 1, a vehicle wire harness may include a braided wire made of a metal wire knitted in a cylindrical shape as a shield member. The braided wire is a cylindrical shield member having flexibility that can be deformed according to the deformation of the electric wire.

  Moreover, as shown in Patent Document 2, a wire harness laid in a place exposed to the outside, such as the lower surface (under the floor) of a bottom plate in an automobile, includes a metal pipe that is a cylindrical protective member that surrounds the periphery of the electric wire. There is a case. The metal pipe is a member that protects the electric wire from foreign matters such as gravel scattered from the road, and at the same time, a shield member that shields noise electromagnetic waves.

  In a wire harness provided with a shield member, both ends of an electric wire are wired into an inside of the case from an opening of a metal case that accommodates a device to be connected. Further, in order to obtain the effect of electrostatic shielding, the both ends of the shielding member are usually electrically connected to a metal casing. Since the metal casing is electrically connected to a reference potential body such as an automobile body, the shield member is grounded via the casing. In this case, the shield member and the reference potential body form a closed loop together with other conductive members such as a casing.

  When the electric wire surrounded by the shield member is a power cable that transmits an alternating current, an induced current flows in a closed loop formed by the shield member and the reference potential body. Moreover, 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.

  Further, in an electric vehicle such as an electric vehicle and a hybrid vehicle, a three-phase motor is adopted, and a wire harness connected to the three-phase motor includes three power cables that conduct electricity of symmetrical three-phase AC. In this case, the phase shift of electricity due to electromagnetic induction generated for each phase of AC electricity is the same. In the following explanation, when the term three-phase alternating current is used without any special explanation, it means a symmetrical three-phase alternating current, that is, a three-phase alternating current in which the respective phase shifts (120 degrees) are the same. Means.

  When three power cables that conduct three-phase AC electricity are collectively surrounded by one shield member grounded at both ends, the electromagnetic waves generated by the AC currents of the respective phases flowing through the three power cables. Induction occurs at one shield member. Therefore, the three-phase electricity with different phases generated by electromagnetic induction is mixed in one shield member and cancel each other.

  On the other hand, when three power cables conducting three-phase AC electricity are individually surrounded by three shield members and both ends of the shield members are grounded, each phase flowing through each of the three power cables Electromagnetic induction due to the alternating current is generated individually for each shield member.

  In the following description, a shield member that collectively surrounds three power cables that are grounded at both ends and conduct three-phase alternating current electricity is referred to as a collective surrounding shield member. Further, a shield member that individually surrounds each of the three power cables that are grounded at both ends and conduct three-phase AC electricity is referred to as an individual surrounding shield member.

JP 2006-344398 A JP 2011-196367 A

  In recent years, in electric vehicles such as electric vehicles and hybrid vehicles, higher power and higher frequency of alternating current electricity supplied from an inverter circuit to a three-phase motor have been advanced. Therefore, when an individual go-type shield member is employed, an excessive induced current tends to flow through each shield member. Further, even when the power cable and the shield member are long, an excessive induced current tends to flow through each shield member.

  When an excessive induced current flows through the shield member, there is a problem that peripheral members are damaged by heat generated in the shield member.

  On the other hand, when the collective go shield type member is employed, the three-phase induced currents cancel each other, so there is no problem of excessive current flowing through the shield member, but a heavy and large shield member is required. Since it is inconvenient to handle a heavy and large shield member, it is desirable not to employ such a shield member. Moreover, when a collective surrounding shield member made of a thin and coarse conductive member is employed to reduce the weight of the shield member, the shielding performance of high-frequency noise mainly deteriorates.

  An object of the present invention is to effectively shield noise electromagnetic waves generated in a power cable that conducts symmetrical three-phase AC electricity, and that an excessive induced current flows through the shield member without adopting a heavy and large shield member. Is to prevent.

The wire harness which concerns on the 1st aspect of this invention is provided with each component shown below.
(1) The first component is three power cables that conduct symmetrical three-phase alternating current electricity.
(2) The second constituent elements are three conductive first shield members that are arranged in parallel at intervals and individually surround the periphery of each of the three power cables.
(3) The third component is a conductive member having a coarser mesh than the first shield member, and collectively surrounds the three first shield members in contact with the three first shield members. It is the 2nd shield member enclosed.

  The wire harness according to the second aspect of the present invention is an aspect of the wire harness according to the first aspect. In the wire harness according to the second aspect, the three first shield members and the flexible second shield member are collectively held, and the three first shield members are held in parallel. In addition, a holding member that holds the second shield member in contact with the three first shield members is further provided.

  The wire harness according to the third aspect of the present invention is an aspect of the wire harness according to the second aspect. The wire harness which concerns on a 3rd aspect is connected with the said clamping member, and is further provided with the nonelectroconductive fastener fastened to the edge part of the through-hole of a plate-shaped support body.

  In the wire harnesses according to the first to third aspects, three power cables that conduct electricity of symmetrical three-phase alternating current are individually surrounded by three first shield members. Therefore, when both ends of the first shield member are grounded, electromagnetic induction due to the alternating current of each phase flowing through each of the three power cables occurs individually for each first shield member. However, the three first shield members are electrically connected to each other by the second shield member that contacts them. Therefore, in each of the first shield members, the three-phase electromagnetic induction electricity having different phases are mixed and cancel each other. As a result, an excessive electromagnetic induction current is prevented from flowing through the first shield member.

  The first shield member is a fine conductive member such as a metal pipe and surrounds the power cable in the vicinity thereof. Therefore, the first shield member exhibits excellent electromagnetic shielding performance by being grounded at both ends.

  On the other hand, the second shield member also functions as an electromagnetic shield by grounding both ends. Here, the second shield member, which is a coarse conductive member, cannot shield an electromagnetic wave having a short wavelength, that is, a high-frequency electromagnetic wave, but the high-frequency electromagnetic wave is shielded by the first shield member. Further, in the second shield member that collectively surrounds three power cables that conduct electricity of symmetrical three-phase alternating current, the three-phase electricity generated by electromagnetic induction and having different phases is mixed and cancel each other. Therefore, an excessive induced current is prevented from flowing through the second shield member.

  In addition, each of the first shield members is relatively thin and lightweight, and the second shield member, which is a conductive member having a coarse mesh, is also relatively lightweight. Therefore, there is no inconvenience that a heavy and large shield member must be handled.

  From the above, according to the wire harness according to the first to third aspects, it effectively shields noise electromagnetic waves generated in a power cable that conducts electricity of symmetrical three-phase alternating current, and further adopts a heavy and large shield member Thus, it is possible to prevent an excessive induced current from flowing through the shield member.

  In the second aspect, the three first shield members and the second shield member surrounding the first shield member are held in a state of being reliably in contact with each other by the clamping member. Thereby, poor contact between the first shield member and the second shield member is avoided. Further, unlike the case where each shield member is passed through the cylindrical member from the end portion thereof, the clamping member can be easily attached to an intermediate portion of the shield member.

  Moreover, the wire harness which concerns on a 3rd aspect is provided with the nonelectroconductive fastener connected with the clamping member. Therefore, in the process of laying the wire harness on the vehicle, it is easy to fix the wire harness to a support body such as the body of the vehicle.

It is a top view of wire harness 10 concerning a 1st embodiment of the present invention. 3 is an exploded perspective view of a portion of a clamping member in the wire harness 10. FIG. 3 is a cross-sectional view of a portion of a clamping member in the wire harness 10. FIG. 2 is an exploded perspective view of a bracket member portion in the wire harness 10. FIG. It is a top view of the wire harness 10 laid in the vehicle. It is a disassembled perspective view of the part of the clamping member in the wire harness 10A which concerns on 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following embodiment is an example embodying the present invention, and is not an example of limiting the technical scope of the present invention.

<First Embodiment>
<Outline configuration>
First, the wire harness 10 according to the first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, 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 and two bracket members 4.

<Power cable>
The power cable 9 is an insulated wire composed of a core wire 91 made of a conductive material and an insulating coating 92 made of an insulating material covering the periphery of the core wire 91. For example, the terminal fitting 8 is connected to the core wire 91 at the end of the power cable 9. In the example shown in FIGS. 1 and 2, 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.

  It is also conceivable that the wire harness 10 further includes a cable holding member that holds the end portions of the three power cables 9 in a certain positional relationship. In this case, the cable holding member holds the end portions 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. For example, it is conceivable that the cable holding member is a non-conductive synthetic resin member. In this case, it is conceivable that the cable holding member is a member formed by insert molding using the plurality of power cables 9 as insert members.

<First shield member>
The first shield member 1 is a conductive member that is arranged in parallel at intervals and that individually surrounds the periphery of each power cable 9. Therefore, 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 to 5, 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.

  Further, the first shield member 1 is a conductive member that is finer than the second shield member 2 described later, that is, a member having a high volume ratio of the conductor in the entire volume including the gap between the conductors. In other words, the first shield member 1 is a member having a smaller volume ratio of the gap between the conductors in the entire volume than the second shield member 2. Note that the small volume ratio of the gap between the conductors includes that the volume ratio of the gap between the conductors is zero.

  For example, it is conceivable that the first shield member 1 is a metal pipe member surrounding the power cable 9. In this case, it is conceivable that the pipe member is made of a material whose main component is a metal such as copper, stainless steel, or aluminum. It is conceivable that a plated layer or a paint layer is formed on the surface of the pipe member as necessary.

  It is also conceivable that the first shield member 1 is a braided wire made of a metal wire knitted in a cylindrical shape. In this case, it is conceivable that the braided wire is composed of a wire material mainly composed of a metal such as copper, stainless steel, or aluminum. However, when the first shield member 1 is a braided wire, the metal wire constituting the braided wire is knitted with as fine an eye as possible, that is, knitted so that the gap is as small as possible. desirable.

  As will be described later, the first shield member 1 is electrically connected to the second shield member 2 by contacting the second shield member 2. Further, in a state where the wire harness 10 is laid on the vehicle, the first shield member 1 is electrically connected to a reference potential body such as a vehicle body via the second shield member 2.

<Second shield member>
The second shield member 2 is a conductive member that collectively surrounds the periphery of the three first shield members 1 while being in contact with the three first shield members 1. The second shield member 2 is a conductive member having a coarser mesh than the first shield member 1, that is, a member having a low volume ratio of the conductor in the entire volume including the gap between the conductors. In other words, the second shield member 2 is a member having a larger volume ratio of the gap between conductors in the entire volume than the first shield member 1.

  For example, it is conceivable that the second shield member 2 is a metal cloth that is a woven fabric of metal yarn. In this case, the metal cloth is wound around the three first shield members 1 that individually surround each of the three power cables 9, and is formed into a cylindrical shape.

  The metal cloth is, for example, a cloth having a network structure in which metal threads mainly composed of copper are woven so as to intersect each other in the vertical and horizontal directions. In addition, 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 mainly composed of a metal such as iron, copper, stainless steel or aluminum.

  It is also conceivable that the second shield member 2 is a braided wire made of a metal wire knitted in a cylindrical shape. In this case, it is conceivable that the braided wire is composed of a wire material whose main component is a metal such as iron, copper, stainless steel, or aluminum. When the second shield member 2 is a braided wire, it is conceivable that the metal wire constituting the braided wire is knitted with relatively coarse eyes, that is, knitted so as to increase the gap. . The second shield member 2 made of a braided wire or a metal cloth has conductivity and flexibility.

  It is also conceivable that the second shield member 2 is formed of a thin metal plate formed with a plurality of holes or a plurality of slits and formed into a cylindrical shape.

  As shown in FIGS. 1, 3, and 5, the second shield member 2 has grounded portions 21 that are electrically connected to the reference potential body 70 at both ends in the longitudinal direction. . The reference potential body 70 is, for example, a metal vehicle body.

<Clamping member>
The clamping member 3 is a member that collectively clamps the three first shield members 1 and the second shield member 2 surrounding them. The clamping member 3 holds the three first shield members 1 in a state of being arranged in parallel and holds the second shield member 2 in a state of contacting the three first shield members 1. The sandwiching member 3 is attached to at least one intermediate portion between both end portions in the longitudinal direction of the three first shield members 1 and the second shield member 2 surrounding them. In the example shown in FIG. 1, two clamping members 3 are attached to each of two intermediate portions.

  It is conceivable that the clamping member 3 is a non-conductive member. In this case, the clamping member 3 is, for example, a synthetic resin molded member, and is made of a material such as polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polyethylene terephthalate (PET), or polyamide (PA). It is configured.

  In addition, when there is no conductive member that is not preferably electrically connected to the second shield member 2 in the portion where the sandwiching member 3 is disposed in the vehicle, the sandwiching member 3 is a metal member or the like. It is also possible to use a conductive member.

  As shown in FIGS. 2 and 3, the sandwiching member 3 includes a first sandwiching member 3 x and a second sandwiching member 3 y that are combined with the three first shield members 1 and the second shield member 2 sandwiched therebetween. Yes. Further, three groove portions 31 are formed in each of the first clamping member 3x and the second clamping member 3y.

  The groove portion 31 is a groove-like portion into which each of the three first shield members 1 surrounding each of the three power cables 9 is fitted via the flexible second shield member 2. Each of the first shield members 1 is sandwiched between the groove portion 31 of the first sandwiching member 3x and the groove portion 31 of the second sandwiching member 3y facing each other via the second shield member 2.

  Further, the flexible second shield member 2 is sandwiched between the groove portion 31 of the first clamping member 3x and the groove portion 31 of the second clamping member 3y, whereby the outer peripheral surface of each of the three first shield members 1 Deform along.

  When the three first shield members 1 and one second shield member 2 are sandwiched between the first sandwiching member 3x and the second sandwiching member 3y, the three first shield members 1 through which the power cables 9 pass are respectively They are held in parallel and spaced apart. Further, the second shield member 2 is in close contact with the three first shield members 1.

  Further, the first clamping member 3x and the second clamping member 3y are connected by a connector in a state where the first shield member 1 and the second shield member 2 are sandwiched. Thereby, the 1st clamping member 3x and the 2nd clamping member 3y are hold | maintained in the combined state. Further, the second shield member 2 is held in close contact with the three first shield members 1.

  In the example shown in FIGS. 2 and 3, the coupling tool is a screw 51 and a nut 52. Therefore, the first clamping member 3x and the second clamping member 3y shown in FIG. 2 are formed with screw holes 32 through which the connecting screws 51 are passed.

<Bracket member>
The bracket member 4 is a conductive member that is interposed between the grounded portion 21 at each end of the second shield member 2 and the reference potential body 70 and grounds the grounded portion 21. For example, as shown in FIG. 5, in a state where the wire harness 10 is laid on the vehicle, both ends of the power cable 9 enter the housing 7 from the opening of the metal housing 7 that accommodates the device to be connected. Wired.

  Further, the two grounded portions 21 that are both ends of the second shield member 2 are electrically connected to the reference potential body 70 via the conductive bracket member 4 and the metal housing 7. Is done. It is conceivable that the bracket member 4 is made of a material whose main component is a metal such as copper, stainless steel, or aluminum.

  In the example shown in FIG. 4, the bracket member 4 collectively holds the end portions of the three first shield members 1 and the grounded portion 21 (end portion) of the second shield member 2 surrounding them. It is a member.

  Also, the bracket member 4 shown in FIG. 4 includes a first bracket member 4x and a second bracket member that are combined with the end portions of the three first shield members 1 and the grounded portion 21 of the second shield member 2 interposed therebetween. 4y. Each of the first bracket member 4x and the second bracket member 4y has a clamping part 41 and a flange part 42.

  The clamping portion 41 of the bracket member 4 is a portion that sandwiches the end portions of the three first shield members 1 and the grounded portion 21 of the one second shield member 2. Three groove portions 411 are formed in the clamping portion 41 of the bracket member 4.

  The groove portion 411 of the sandwiching portion 41 is a groove-like portion into which each of the three first shield members 1 surrounding each of the three power cables 9 is fitted via the flexible second shield member 2. . Each of the first shield members 1 is sandwiched between the groove portion 411 of the first bracket member 4x and the groove portion 411 of the second bracket member 4y facing each other via the second shield member 2.

  When the three first shield members 1 and one second shield member 2 are sandwiched between the sandwiching portion 41 of the first bracket member 4x and the sandwiching portion 41 of the second bracket member 4y, the power cable 9 passes through each 3 The two first shield members 1 are held in a state of being arranged in parallel at intervals.

  Further, the first bracket member 4x and the second bracket member 4y are connected by a connector in a state where the first shield member 1 and the second shield member 2 are sandwiched. Thereby, the 1st bracket member 4x and the 2nd bracket member 4y are hold | maintained in the combined state. Further, the second shield member 2 is held in close contact with the three first shield members 1.

  In the example shown in FIG. 4, the connector is a screw 5. Therefore, a screw hole 412 into which the connecting screw 5 is tightened is formed in the holding portion 41 of the first bracket member 4x and the holding portion 41 of the second bracket member 4y shown in FIG.

  On the other hand, the flange portion 42 of the bracket member 4 is a portion fixed to the edge portion of the opening for introducing the power cable 9 in the housing 7 by screws or the like.

  The grounded portion 21 of the second shield member 2 is electrically connected to the bracket member 4 by the structure shown in FIG. The bracket member 4 is electrically connected to the housing 7 by fixing the flange portion 42 to the housing 7. The housing 7 is electrically connected to a reference potential body 70 such as a vehicle body.

  4, 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. The second shield member 2 and the reference potential body 70 form an electrical closed loop together with other conductive members such as the housing 7.

  In addition, since the three first shield members 1 are in contact with the second shield member 2, each of the three first shield members 1 and the reference potential body 70 is not limited to the second shield member 2 or the housing 7. An electrically closed loop is formed with the conductive member.

<Effect>
In the wire harness 10, three power cables 9 that conduct symmetric three-phase AC electricity are individually surrounded by the three first shield members 1. Therefore, when both ends of the first shield member 1 are grounded, electromagnetic induction due to the alternating current of each phase flowing through each of the three power cables 9 occurs individually for each first shield member 1. However, the three first shield members 1 are electrically connected to each other by the second shield member 2 that contacts them. Therefore, in each of the first shield members 1, the three-phase electromagnetic induction electricity having different phases are mixed and cancel each other. As a result, an excessive electromagnetic induction current is prevented from flowing through the first shield member 1.

  The first shield member 1 is a fine conductive member such as a metal pipe and surrounds the power cable 9 in the vicinity thereof. Therefore, the first shield member 1 exhibits excellent electromagnetic shielding performance by being grounded at both ends.

  On the other hand, the second shield member 2 also functions as an electromagnetic shield when both ends thereof are grounded. Here, the second shield member 2, which is a coarse conductive member, has a short wavelength, that is, cannot shield high-frequency electromagnetic waves, but the high-frequency electromagnetic waves are shielded by the first shield member 1. Further, in the second shield member 2 that collectively surrounds the three power cables 9 that conduct electricity of symmetrical three-phase alternating current, the three-phase electricity having different phases generated by electromagnetic induction is mixed and cancel each other. . Therefore, an excessive induced current is prevented from flowing through the second shield member 2.

  Each of the first shield members 1 is relatively thin and lightweight, and the second shield member 2 that is a conductive member having a coarse mesh is also relatively lightweight. Therefore, there is no inconvenience that a heavy and large shield member must be handled.

  From the above, if the wire harness 10 is adopted, the noise electromagnetic wave generated in the power cable 9 conducting symmetric three-phase alternating current is effectively shielded, and further, the shield member without adopting a heavy and large shield member It is possible to prevent an excessive induced current from flowing in

  Further, in the wire harness 10, the three first shield members 1 and the second shield member 2 surrounding the periphery thereof are held in a state of being reliably in contact with each other by the sandwiching member 3. Thereby, the poor contact between the first shield member 1 and the second shield member 2 is avoided. Further, unlike the case where each shield member 1, 2 is passed through the cylindrical member from the end thereof, the clamping member 3 is easily attached to the intermediate portion of the first shield member 1 and the second shield member 2. Is possible.

Second Embodiment
Next, with reference to FIG. 6, a wire harness 10A according to a second embodiment of the present invention and a holding member 3A provided therein will be described. FIG. 6 is an exploded perspective view of a portion of the clamping member 3A in the wire harness 10A. 6, the same components as those shown in FIGS. 1 to 5 are given the same reference numerals. Hereinafter, only the differences of the wire harness 10A from the wire harness 10 will be described.

  Similar to the wire harness 10, the wire harness 10 </ b> A collectively includes the three power cables 9, the three first shield members 1 that individually surround the power cables 9, and the three first shield members 1. The surrounding second shield member 2, one or more clamping members 3 </ b> A, and two bracket members 4 are provided.

  3 A of clamping members have the structure to which the fastener 6 was added compared with the clamping member 3 of the wire harness 10. FIG. The fastener 6 is a well-known tool that is fastened to an edge of a through hole of a plate-like support such as a vehicle body panel. The fastener 6 is made of a non-conductive material that is integrally connected to the clamping member 3.

  The fastener 6 is, for example, a synthetic resin molded member. In this case, the fastener 6 is made of a material such as polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polyethylene terephthalate (PET), or polyamide (PA).

  The fastener 6 includes an insertion portion 61 that is inserted into an attachment hole that is a through-hole of a plate material, and a flange portion 62 to which the main body portion of the clamping member 3A is fixed. The fastener 6 sandwiches the edge portion of the attachment hole by the insertion portion 61 and the flange portion 62.

  One of the first clamping member 3x and the second clamping member 3y is fixed to one surface of the flange portion 62, and the insertion portion 61 is erected on the other surface. The flange portion 62 is formed in a dish shape having an area larger than the area of the mounting hole so as to close the mounting hole.

  When the insertion portion 61 is inserted into the mounting hole, the portions protruding on both sides are pressed against the edge of the mounting hole and contract to the width of the mounting hole. When the insertion portion 61 is further pushed into the inside of the mounting hole, the shape of the portion protruding to both sides is restored until the width of the back side of the edge of the mounting hole becomes larger than the width of the mounting hole. As a result, the protruding portion on both sides of the insertion portion 61 and the flange portion 62 sandwich the edge of the mounting hole from both the front and back sides. As a result, the fastener 6 is fixed to the mounting hole portion of the plate material.

  10A of wire harnesses are provided with the nonelectroconductive fastener 6 connected with 3 A of clamping members. Therefore, in the process of laying the wire harness 10A on the vehicle, the operation of fixing the intermediate portion of the wire harness 10A to a support body such as the body of the vehicle is facilitated.

<Others>
In the wire harness 10, the holding member 3 includes a first holding member 3 x and a second holding member 3 y that are connected by a screw 51 and a nut 52. However, it is also conceivable that the first clamping member 3x and the second clamping member 3y have a structure that can be connected without using a connector such as the screw 51. For example, it is conceivable that the first clamping member 3x and the second clamping member 3y are connected by a welding or anchoring mechanism or the like.

  It is also conceivable that the first clamping member 3x and the second clamping member 3y are integrally formed by having a structure that is continuous at one end of each.

  It is also conceivable that the three first shield members 1 are arranged side by side, that is, not arranged in two dimensions but in three dimensions. For example, it is also conceivable that the three first shield members 1 are arranged in parallel at positions that form vertices of an equilateral triangle when viewed from the longitudinal direction thereof.

DESCRIPTION OF SYMBOLS 1 1st shield member 2 2nd shield member 3,3A Clamping member 4 Bracket member 6 Fastener 7 Housing | casing 8 Terminal metal fitting 9 Electric power cable 10, 10A Wire harness 21 Grounded part 31 Groove part of a holding member 32 Screw hole of a holding member 41 Bracket member clamping portion 42 Bracket member flange portion 5, 51 Screw 52 Nut 61 Fastener insertion portion 62 Fastener flange portion 70 Reference potential body 91 Core wire 92 Insulation coating 411 Bracket member groove 412 Bracket member screw hole 3x 1st clamping member 3y 2nd clamping member 4x 1st bracket member 4y 2nd bracket member

Claims (3)

Three power cables that conduct symmetrical three-phase AC electricity;
Three conductive first shield members arranged in parallel at intervals and individually surrounding each of the three power cables;
A conductive member that is coarser than the first shield member, and includes a second shield member that collectively surrounds the three first shield members in a state of contact with the three first shield members. Wire harness. The wire harness according to claim 1,
The three first shield members and the flexible second shield member are collectively sandwiched, the three first shield members are held in a state of being arranged in parallel, and the second shield member is The wire harness further provided with the clamping member hold | maintained in the state which contacts said 1st shield member. The wire harness according to claim 2,
The wire harness further provided with the nonelectroconductive fastener connected with the said clamping member and fastened by the edge of the through-hole of a plate-shaped support body.

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