JP6519898B2 - Wire harness and electromagnetic wave suppression member - Google Patents

Description

  The present invention relates to a wire harness and an electromagnetic wave suppression member.

  Conventionally, for example, a wire harness provided in a vehicle using an electric motor as a drive source and connecting an inverter and the electric motor is known. One known wire harness of this type is provided with a braided shield for reducing electromagnetic noise radiated from the wire of the wire harness.

  Patent Document 1 discloses a wire harness in which an electromagnetic noise radiated from the wire harness by the magnetic core is further reduced by providing a magnetic core made of a ferrite core or the like in addition to a braided shield.

  Patent Document 1: Japanese Patent Application Laid-Open No. 2014-130708

  However, the ferrite core used as the magnetic core in Patent Document 1 has a large size and a large mass. Therefore, in the case of a wire harness using a ferrite core as a magnetic core, the degree of freedom of layout is reduced due to the large size ferrite core, and the handling of the wire harness is reduced due to an increase in mass. There is.

  Then, an object of this invention is to provide the wire harness and electromagnetic wave suppression member which can improve the freedom degree of wiring layout, and can suppress increase of mass, reducing electromagnetic noise.

  The present invention has an electric wire and an electromagnetic wave suppression member provided around the electric wire for the purpose of solving the above problems, and the electromagnetic wave suppression member includes a magnetic core made of a nanocrystalline soft magnetic material and And an inner wall portion that suppresses a change in magnetic characteristics of the magnetic core when the wire is bent, and the magnetic core is provided to cover the outer periphery of the wire via the inner wall portion. Provide a wire harness that is

  Further, the present invention is an electromagnetic wave suppression member provided around a wire for the purpose of solving the above-mentioned problem, wherein a magnetic core made of nanocrystalline soft magnetic material and the magnetism when the wire is bent. And an inner wall portion for suppressing a change in magnetic properties of a body core, wherein the magnetic core is provided to cover an outer periphery of the electric wire via the inner wall portion. .

  According to the present invention, it is possible to provide a wire harness and an electromagnetic wave suppression member capable of improving the degree of freedom of layout arrangement and suppressing an increase in mass while reducing electromagnetic noise.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the external appearance of the electric wire (wire harness) which concerns on one embodiment of this invention. It is the perspective view which abbreviate | omitted the braided shield in FIG. 1A. It is a perspective view of a connector. It is the sectional view on the AA line of FIG. It is an exploded perspective view of a housing. It is a perspective view of a seal holding member. It is a perspective view of an electromagnetic wave control member. It is a torn surface view of an electromagnetic wave control member. It is a disassembled perspective view of an electromagnetic wave suppression member.

Embodiment
Hereinafter, embodiments of the present invention will be described with reference to the attached drawings.

(Description of the overall structure of the wire harness)
FIG. 1A is a perspective view showing the appearance of a wire harness according to the present embodiment, and FIG. 1B is a perspective view in which the braided shield is omitted.

  As shown to FIG. 1A and FIG. 1B, the wire harness 1 is provided with the electric wire 2 and the connector 3 provided in the edge part of the electric wire 2. As shown in FIG.

  The wire harness 1 is mounted, for example, on a vehicle such as an electric vehicle or a hybrid vehicle having an electric motor as a drive source, and is used to supply a PWM (Pulse Width Modulation) controlled current output from an inverter to the electric motor. Be The current includes a high frequency component due to switching of a switching element such as a power transistor.

  In the present embodiment, the wire harness 1 is configured to supply three-phase alternating current of U phase, V phase and W phase to the electric motor using three electric wires 2.

  Each electric wire 2 is provided with a conductor 2a in which a plurality of strands of good electric conductor are twisted and an insulator 2b made of insulating resin provided on the outer periphery of the conductor 2a.

  A connection terminal 21 is connected to an end of each wire 2. The connection terminal 21 integrally includes a caulking portion 21a caulked and fixed to an end portion of the conductor 2a, and a plate-like connection portion 21b extended from the caulking portion 21a. The connection portion 21 b is formed with a connection hole 21 c for bolt fixing which penetrates the connection portion 21 b in the thickness direction. The connection terminal 21 is fixed to the device-side connection terminal by fixing the connection portion 21 b to the corresponding device-side connection terminal provided on the terminal block in the mounting target member (for example, in the inverter) to be connected. Electrically connected.

  A braided shield 4 is provided around the three wires 2 so as to collectively cover the three wires 2. The braided shield 4 is formed, for example, by braiding a plurality of shield wires formed by tin plating copper. Here, the braided shield 4 is formed by using six shield strands as one strand bundle and crossing the strand bundles in an X-shape and knitting them together. The braided shield 4 can expand and contract the inner diameter by, for example, manually changing the size of the stitches.

  An electromagnetic wave suppression member 8 according to the present embodiment is provided around the braided shield 4. Details of the electromagnetic wave suppression member 8 will be described later.

  Although not shown, a corrugated tube for protection of the electric wire 2 may be provided on the outer periphery of the braided shield 4 (the portion where the electromagnetic wave suppression member 8 is not provided). The corrugated tube is a cylindrical member made of resin, and has a bellows shape in which large diameter portions and small diameter portions are alternately formed.

(Description of connector 3)
FIG. 2 is a perspective view of the connector 3 and FIG. 3 is a cross-sectional view taken along the line A-A.

  As shown in FIGS. 2 and 3, the connector 3 includes an accommodated member 31 accommodated in an attachment hole (not shown) formed in an attached member (for example, an inverter), and an accommodated member 31 along the electric wire 2. And an electric wire holding member 32 disposed in line with the electric wire.

  The wire holding member 32 holds the wire 2 and fixes the wire 2 to a mounted member (for example, an inverter). The wire holding member 32 includes a housing (wire holder) 5 made of an insulating resin and a shield shell (shield case) 6 made of a conductive metal.

  As shown in FIGS. 2 to 4, the housing 5 includes a wire support portion 52 for supporting the wire 2, an outer wall portion 53 covering the wire support portion 52, and a connection portion 54 for connecting the wire support portion 52 and the outer wall portion 53. And are integrated. The housing 5 is made of, for example, an insulating resin such as PBT (polybutylene terephthalate), PA (polyamide), or PPS (polyphenylene sulfide), and is formed by, for example, injection molding.

  The wire support portion 52 is formed in a cylindrical shape having an insertion hole 51 through which the electric wire 2 is inserted, and is configured to hold the electric wire 2 inserted into the insertion hole 51. Here, three wire support portions 52 are provided corresponding to the three wires 2. In addition, you may make it provide the electric wire support part of not only this but the integral structure which has the three penetration holes 51, for example. The three wire support portions 52 are aligned at regular intervals in the direction perpendicular to the longitudinal direction of the wire 2 and configured to hold the three wires 2 in an aligned state. Hereinafter, the longitudinal direction of the electric wire 2 in the connector 3 will be referred to as a length direction, the alignment direction of the electric wires 2 as a width direction, and a direction perpendicular to the length direction and the width direction as a height direction.

  The outer wall portion 53 is formed in a tubular shape, and is provided to be separated from each wire support portion 52 and to collectively cover each wire support portion 52. The connecting portion 54 is a rib-like connecting piece 54 a connecting the central portion and both side portions in the width direction of the wire support portion 52 to the outer wall portion 53, and the wire support portion 52 and the outer wall portion 53 at the tip end of the wire 2. And a front wall portion 54b provided to close the space between them.

  In the present embodiment, the housing 5 is divided up and down at the central portion in the height direction, and both divided housings 5 are fixed and integrated by fixing means including the lance 55.

  The shield shell 6 is provided on the outer periphery of the outer wall portion 53 by press fitting. The shield shell 6 is made of, for example, a conductive metal such as iron, brass, or aluminum, and is configured to accommodate at least a part of the housing 5. A plurality of rib-like protruding portions 53a formed along the longitudinal direction are formed in a circumferentially separated manner at an end portion of the outer periphery of the outer wall portion 53 on the wire insertion side, and press-fitting is performed by the protruding portions 53a. The shield shell 6 can be firmly fixed to the housing 5.

  The shield shell 6 is provided so as to protrude outward from a cylindrical portion 61 provided so as to cover the periphery of the outer wall portion 53 of the housing 5 and an end portion on the tip end side of the cylindrical portion 61 And a flange portion 62 as a fixing portion fixed to a housing (for example, an inverter). A band-shaped tightening member 64 is provided on the outer periphery of the shield shell 6, and the braided shield 4 is fixed to the outer periphery of the shield shell 6 by the tightening member 64, and the cylindrical portion 61 is tightened. It is fixed to five.

  As shown in FIGS. 3 and 5, the receiving member 31 is a member accommodated in a mounting hole (not shown) formed in a mounting member (for example, an inverter), and is more than the flange portion 62 of the shield shell 6. It is arranged on the tip side.

  The housed member 31 is a seal holding member 72 having three insertion holes 71 through which the electric wire 2 is inserted, and is held by the outer peripheral surface of the seal holding member 72, and the inner surface of the mounting hole of the mounted member and the seal holding member 72 An outer peripheral seal member 76 for sealing the space, and an inner peripheral seal member (wire seal) 74 held on the inner peripheral surface of the insertion hole 71 and sealing between the insertion hole 71 and the electric wire 2 are provided. In FIG. 5, the outer peripheral seal member 76 and the inner peripheral seal member 74 are omitted.

  The seal holding member 72 is made of, for example, an insulating resin such as PBT (polybutylene terephthalate), PA (polyamide), or PPS (polyphenylene sulfide).

  The outer peripheral seal member 76 is formed in an annular shape, and is disposed in the outer peripheral seal member groove 75 formed along the circumferential direction on the outer periphery of the seal holding member 72. The outer peripheral seal member 76 is interposed between the seal holding member 72 and the inner surface of the mounting hole of the mounting member (for example, inverter), and moisture intrudes into the mounting member (for example, inverter) from the outside of the seal holding member 72 Suppress that.

  The inner peripheral seal member 74 is formed in an annular shape, and is disposed in the inner peripheral seal member groove 73 formed along the circumferential direction at the end of the seal holding member 72 on the housing 5 side of the insertion hole 71. The inner peripheral seal member 74 is interposed between the insulator 2 b of the electric wire 2 and the seal holding member 72, and suppresses the penetration of moisture into the mounting member (for example, an inverter) along the electric wire 2.

  At the proximal end of the seal holding member 72, a locking projection 77 projecting to the proximal side is integrally formed. The locking projection 77 connects the head 77a having a rectangular parallelepiped shape, the head 77a and the seal holding member 72, and is a shaft portion formed in a rectangular parallelepiped shape (square column) having a smaller width and height than the head 77a. (Cervical part) 77b, and has integrally.

  A locking groove 56 for locking the locking projection 77 is formed in the front wall portion 54 b of the housing 5. The locking groove 56 is smaller in width and height than the head 77 a and the head housing portion 56 a which is larger in width, height and length than the head 77 a that houses the head 77 a of the locking projection 77. And a shaft housing portion 56b which is larger in width and height than the shaft 77b and shorter in length than the shaft 77b, and the head housing 56a is opened forward via the shaft housing 56b. Is configured as.

  The shield shell 6 is attached to the mounting member (for example, an inverter) by housing the head 77a in the head housing portion 56a and the shaft 77b in the shaft housing portion 56b and locking the locking projection 77 in the locking groove 56. The seal holding member 72 can be moved relative to the wire holding member 32 when fixed to the case of FIG. In the present embodiment, the seal holding member 72 is movable with respect to the housing 5 in the length direction, the width direction, and the height direction.

  With this configuration, even if the wire holding member 32 (the shield shell 6 or the housing 5) is rotated or inclined by the bending of the electric wire 2 or the torque at the time of bolting the shield shell 6, the seal is rotated or inclined. It becomes difficult for the holding member 72 to follow, and it is possible to suppress the loss of the waterproof function, for example, because only a part of the outer peripheral seal member 76 is crushed excessively.

  Although the case where the head 77a and the shaft 77b of the locking projection 77 are formed in a rectangular parallelepiped shape (or prismatic shape) has been described here, the shapes of the head 77a and the shaft 77b are not limited thereto. For example, the head 77a and the shaft 77b may be cylindrical, or the head 77a may be spherical.

  Further, the means for relatively movably connecting the seal holding member 72 and the electric wire holding member 32 (housing 5) is not limited to the locking projection 77 and the locking groove 56. For example, a hook (lance) having elasticity is extended from one of the seal holding member 72 and the housing 5, and a locking portion for locking the hook to the other of the seal holding member 72 and the housing 5 is provided to lock the hook. Even in a state in which the seal holding member 72 and the housing 5 are engaged by being locked to the portion, the seal holding member 72 and the electric wire holding member 32 (housing 5) can be configured to be relatively movable by elasticity of the hook. It is.

(Description of the electromagnetic wave suppression member 8)
FIG. 6A is a perspective view of the electromagnetic wave suppression member 8, and FIG. 6B is a cutaway view thereof.

  As shown in FIGS. 1, 6A, and 6B, the electromagnetic wave suppression member 8 is provided so as to cover the outer periphery of the electric wire 2, and has a restriction member 81 having an inner wall 81a harder than the electric wire 2; And an annular magnetic core 82 made of nanocrystalline soft magnetic material provided around the periphery. In addition, "hard" said here means that it is harder to bend when trying to make it bend with both ends with respect to the thing of the same length (for example, unit length).

  In the present embodiment, the magnetic core 82 is made of nanocrystalline soft magnetic material. The nanocrystalline soft magnetic material is a material in which nanocrystalline particles of the ferromagnetic phase are dispersed in the remaining amorphous phase by crystallizing an amorphous alloy.

  Here, FINEMET (registered trademark) was used as the nanocrystalline soft magnetic material. The magnetic core 82 made of FINEMET (registered trademark) is, for example, a single alloy melt containing Fe (-Si) -B as a basic component and a trace amount of elements such as Cu and Nb, Ta, Mo, or Zr added thereto. Amorphous metal ribbon of about 20 μm in thickness is formed into a core of about 20 μm by an ultra-quenching method such as rolling, and formed into a core shape (in this case, an annular shape covering all three wire support portions 52). It is formed by heat treatment and crystallization. The grain size of the magnetic core 82 is about 10 nm. As the magnetic core 82, a nanocrystalline soft magnetic material other than FINEMET (registered trademark), for example, NANOMET (registered trademark) may be used.

  The nanocrystalline soft magnetic material has high saturation magnetic flux density and excellent soft magnetic characteristics (high magnetic permeability and low core loss characteristics) as compared with soft magnetic materials such as soft ferrite which have been conventionally used. Therefore, by using a nanocrystalline soft magnetic material as the magnetic core 82, the magnetic core 82 can be miniaturized. As a result, it is possible to suppress the increase in size and mass of the electromagnetic wave suppression member 8 and to keep the entire wire harness 1 compact and lightweight even when the electromagnetic wave suppression member 8 is attached. The size (thickness and length) of the magnetic core 82 may be appropriately set so as to obtain desired characteristics in consideration of the characteristics and the like of the nanocrystalline soft magnetic material to be used.

  In addition, the nanocrystalline soft magnetic material has a characteristic that it can suppress electromagnetic wave noise in a frequency band used for radio such as AM radio, as compared with soft magnetic material such as soft ferrite which has been conventionally used. In a vehicle, road information and the like are provided by an AM radio. Therefore, when the wire harness 1 is applied to a vehicle, it can be said that the effect of suppressing electromagnetic wave noise in a frequency band used for radio is great.

  However, the nanocrystalline soft magnetic material has a characteristic that the magnetic characteristics change when external stress is applied. Therefore, in the case of using the magnetic core 82 made of a nanocrystalline soft magnetic material, it is necessary to configure the magnetic core 82 so that no stress is applied from the outside.

  Therefore, in the present embodiment, the electromagnetic wave suppression member 8 is configured such that the inner wall 81a harder than the electric wire 2 is provided, and the annular magnetic core 82 made of nanocrystal soft magnetic material is provided around the inner wall 81a. did. As a result, no stress is applied to the magnetic core 82 even when the electric wire 2 is bent or the like, and it becomes possible to suppress a change in the magnetic characteristics of the magnetic core 82.

  In the present embodiment, the entire regulation member 81 is made of a material harder than the electric wire 2. However, the invention is not limited thereto, and at least the inner wall 81 a may be made of a material harder than the electric wire 2. The regulating member 81 is made of, for example, an insulating resin such as PBT (polybutylene terephthalate), PA (polyamide), or PPS (polyphenylene sulfide).

  When the magnetic core 82 protrudes in the longitudinal direction (longitudinal direction of the electric wire 2) relative to the inner wall portion 81a, the magnetic core 82 in the protruding portion interferes with the bent electric wire 2 and the magnetic core 82 It is desirable that the magnetic core 82 be provided so as not to protrude in the longitudinal direction of the electric wire 2 more than the inner wall portion 81 a because the magnetic characteristics may change.

  When the inner wall 81a is formed thick, the distance between the magnetic core 82 and the electric wire 2 is increased, so the magnetic core 82 is slightly longer in the length direction (longitudinal direction of the electric wire 2) than the inner wall 81a. Even if it protrudes, there is no possibility that the electric wire 2 may interfere with the magnetic core 82. However, as the distance between the electric wire 2 and the magnetic core 82 increases, the circumferential length of the stacked magnetic cores 8 becomes longer, and the effect of electromagnetic wave suppression decreases. That is, as in the present embodiment, the magnetic core 82 is provided so as not to protrude in the longitudinal direction of the electric wire 2 relative to the inner wall 81a, whereby the thickness of the inner wall 81a is smaller (the magnetic core 82 and the electric wire It is possible to suppress the change of the magnetic characteristics of the magnetic core 82 while reducing the distance to 2 and further enhancing the effect of suppressing the electromagnetic wave.

  In the present embodiment, the regulating member 81 is provided with a cylindrical outer wall 81b provided so as to cover the inner wall 81a and the magnetic core 82 so as to sandwich the magnetic core 82 with the inner wall 81a. It further has a front wall 81c and a rear wall 81d as a restricting portion that suppresses the magnetic substance core 82 from falling off between the inner wall 81a and the outer wall 81b.

  The outer wall portion 81 b plays a role of suppressing the change of the magnetic characteristics of the magnetic core 82 due to the interference of surrounding members (such as the vehicle body) with the magnetic core 82, and the outer periphery of the magnetic core 82 It is formed to cover the

  The front wall 81 c connects ends of the inner wall 81 a and the outer wall 81 b on the connector 3 side, and closes a gap between the inner wall 81 a and the outer wall 81 b. The rear wall 81 d connects the ends of the inner wall 81 a and the outer wall 81 b opposite to the connector 3 and closes the gap between the inner wall 81 a and the outer wall 81 b. That is, the restriction member 81 is formed in an annular shape as a whole, and a cross section perpendicular to the circumferential direction is formed in a rectangular shape.

  In the present embodiment, the inner wall portion 81a is formed in a tubular shape that collectively covers the three electric wires 2 and the braided shield 4 and is configured to hold the three electric wires 2 in an aligned state. ing. In order to fix the electromagnetic wave suppression member 8 to a vehicle body etc. so that it may protrude outward in the alignment direction (long-axis direction) of the electric wire 2 in the both ends in the alignment direction (long-axis direction) of the electric wire 2 of the outer wall part 81b. Flanges 83 are formed respectively. The flange portion 83 is formed with a bolt hole 83a for passing a bolt for bolt fixing, and a hollow cylinder made of metal for suppressing deformation of the regulating member 81 at the time of bolt tightening on the periphery of the bolt hole 83a. The collar 83b is provided.

  In the present embodiment, the inner wall 81a is formed to cover all the three electric wires 2 at one time, and the magnetic core is formed to cover the three electric wires 2 at one time around the inner wall 81a. 82 is provided. In addition, an inner wall part may be formed so that each electric wire 2 may be covered separately, and the magnetic body core 82 may be provided so that each electric wire 2 may be covered separately. However, in this case, it is necessary to increase the distance between the electric wires 2 (the distance between the inner walls individually provided around the electric wires 2) to such an extent that the magnetic core 82 can be accommodated. There is a case. That is, by providing the magnetic core 82 so as to cover the plurality of electric wires 2 collectively, the electromagnetic wave suppression member 8 can be miniaturized.

  Furthermore, in the present embodiment, the inner wall portion 81a is configured to accommodate the wire 2 and the braided shield 4 with a predetermined clearance, and the regulating member 81 is movable along the longitudinal direction of the wire 2 It is provided. Thereby, the position of the electromagnetic wave suppression member 8 is finely adjusted according to the fixed position on the vehicle body side, or the electromagnetic wave suppression member 8 is appropriately positioned (for example, the electric wire 2 is bent) according to the desired layout of the wire harness 1 And the wiring layout of the wire harness 1 can be further improved. In the present embodiment, the connector 3 provided at the end of the electric wire 2 is formed to be larger than the space surrounded by the inner wall 81a, and the connector 3 also serves to prevent the electromagnetic wave suppression member 8 from coming off. .

  When it is desired to fix the electromagnetic wave suppression member 8 at a predetermined position in the longitudinal direction of the electric wire 2, an adhesive tape is wound to fix the electromagnetic wave suppression member 8 to the electric wire 2, or the electric wire 2 is sandwiched by the electric wire 2. The electromagnetic wave suppression member 8 can be fixed to the electric wire 2 by providing a clip member and suppressing the movement of the electromagnetic wave suppression member 8 along the longitudinal direction of the electric wire 2 by the interference of the clip member.

  Although the electromagnetic wave suppression member 8 is provided around the braided shield 4 in the present embodiment, the present invention is not limited to this. The electromagnetic wave suppression member 8 is provided inside the braided shield 4, that is, between the electric wire 2 and the braided shield 4. You may configure it. In this case, since it becomes difficult to fix the electromagnetic wave suppression member 8 to the vehicle body etc. by bolting the flange portion 83, the flange portion 83 is omitted, and the braided shield 4 and the electromagnetic wave suppression member 8 are fixed by a dedicated fixing member. Are held together and fixed to a vehicle body or the like. By providing the electromagnetic wave suppression member 8 around the braided shield 4 as in the present embodiment, it is not necessary to prepare a separate fixing member, and the number of parts can be reduced.

  As shown in FIG. 7, the restriction member 81 may be divided. Here, a first member 84 consisting of a front wall 81c and a second member 85 consisting of an inner wall 81a, an outer wall 81b and a rear wall 81d are provided, and the inner wall 81a and the outer wall 81b of the second member 85 are provided. The electromagnetic wave suppressing member 8 is configured by fixing and integrating the first member 84 and the second member 85 after the magnetic core 82 is accommodated in the space 86 surrounded by the rear wall portion 81 d and the rear wall portion 81 d. . The method of fixing the first member 84 and the second member 85 is not particularly limited, and, for example, the first method is adhesive fixing using an adhesive, or mechanical fixing using a locking mechanism using a lance or the like. The one member 84 and the second member 85 can be fixed and integrated.

(Operation and effect of the embodiment)
As described above, the wire harness 1 according to the present embodiment includes the electromagnetic wave suppression member 8 provided around the electric wire 2, and the electromagnetic wave suppression member 8 is provided to cover the outer periphery of the electric wire 2, A regulating member 81 having an inner wall 81a harder than 2 and an annular magnetic core 82 made of a nanocrystalline soft magnetic material provided around the inner wall 81a.

  By using the magnetic core 82 made of the nanocrystalline soft magnetic material, the magnetic core 82 can be miniaturized as compared with the ferrite core and the like conventionally used, and the small and lightweight electromagnetic wave suppression member 8 can be realized. By miniaturizing the electromagnetic wave suppression member 8, it becomes easy to arrange the wire harness 1 in a narrow place, and the degree of freedom of the layout of the wire harness 1 is improved. Moreover, by making the electromagnetic wave suppression member 8 lightweight, the increase in the mass of the wire harness 1 at the time of attaching the electromagnetic wave suppression member 8 can be suppressed, and the handleability of the wire harness 1 can be improved.

  Further, by providing the magnetic core 82 around the inner wall 81a harder than the electric wire 2, no load is applied to the magnetic core 82 due to bending of the electric wire 2, vibration of the electric wire 2, etc. It is possible to suppress the change in the magnetic properties of the magnetic core 82.

  That is, according to the present embodiment, it is possible to realize the wire harness 1 capable of improving the degree of freedom of the layout and suppressing the increase of the mass while reducing the electromagnetic noise.

(Summary of the embodiment)
Next, technical ideas to be understood from the embodiments described above will be described by using the reference numerals and the like in the embodiments. However, each reference numeral or the like in the following description does not limit the constituent elements in the claims to the members or the like specifically shown in the embodiments.

  [1] A magnetic core comprising an electric wire (2) and an electromagnetic wave suppression member (8) provided around the electric wire (2), wherein the electromagnetic wave suppression member (8) is made of a nanocrystalline soft magnetic material (82) and an inner wall portion (81a) which suppresses change in magnetic properties of the magnetic core (82) when the electric wire (2) is bent, the magnetic core (82) comprising The wire harness provided so that the outer periphery of the said electric wire (2) may be covered via the said inner wall part (81a).

  [2] The wire harness according to [1], wherein the magnetic core (82) is provided so as not to protrude in the longitudinal direction of the electric wire (2) with respect to the inner wall portion (81a).

  [3] The wire harness according to [1] or [2], wherein the electromagnetic wave suppression member (8) further has an outer wall portion (81b) formed to cover the outer periphery of the magnetic substance core (82). .

  [4] Any one of [1] to [3], wherein the electromagnetic wave suppressing member (8) is restrained from moving along the longitudinal direction of the electric wire (2) by winding an adhesive tape. Wire harness as described in.

  [5] The wire harness according to any one of [1] to [4], wherein the inner wall portion (81a) is made of an insulating resin of polybutylene terephthalate, polyamide or polyphenylene sulfide.

  [6] An electromagnetic wave suppression member (8) provided around a wire (2), wherein a magnetic core (82) made of a nanocrystal soft magnetic material and the magnetic body when the wire (2) is bent And an inner wall portion (81a) for suppressing a change in magnetic properties of the core (82), the magnetic core (82) having an outer periphery of the electric wire (2) through the inner wall portion (81a). An electromagnetic wave suppression member provided so as to cover.

  As mentioned above, although embodiment of this invention was described, embodiment described above does not limit the invention which concerns on a claim. In addition, it should be noted that not all combinations of features described in the embodiments are essential to the means for solving the problems of the invention.

  The present invention can be appropriately modified and implemented without departing from the scope of the invention.

  For example, although the case where the number of the electric wires 2 is three was explained in the above-mentioned embodiment, the number of electric wires 2 is not limited, for example, one, two, or four or more electric wires 2 may be sufficient. .

DESCRIPTION OF SYMBOLS 1 ... Wire harness 2 ... Electric wire 3 ... Connector 8 ... Electromagnetic wave suppression member 81 ... Regulation member 81a ... Inner wall part 81b ... Outer wall part 81c ... Front wall part (regulation part)
81 d ... back wall (regulatory part)
82 ... magnetic core

Claims (6)

With the electric wire,
An electromagnetic wave suppression member provided around the wire;
The electromagnetic wave suppression member is
A magnetic core made of nanocrystalline soft magnetic material,
And an inner wall portion that suppresses a change in magnetic characteristics of the magnetic core when the wire is bent,
The magnetic core is provided to cover the outer periphery of the wire via the inner wall portion.
Wire harness. The magnetic core is provided so as not to protrude in the longitudinal direction of the electric wire than the inner wall portion.
The wire harness according to claim 1. The electromagnetic wave suppression member further includes an outer wall portion formed to cover an outer periphery of the magnetic core.
The wire harness according to claim 1 or 2. In the electromagnetic wave suppression member, movement of the electric wire along the longitudinal direction is suppressed by winding the adhesive tape.
The wire harness according to any one of claims 1 to 3. The inner wall portion is made of an insulating resin of polybutylene terephthalate, polyamide or polyphenylene sulfide.
The wire harness according to any one of claims 1 to 4. An electromagnetic wave suppression member provided around a wire,
A magnetic core made of nanocrystalline soft magnetic material,
And an inner wall portion that suppresses a change in magnetic characteristics of the magnetic core when the wire is bent,
The magnetic core is provided to cover the outer periphery of the wire via the inner wall portion.
Electromagnetic wave suppression member.

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