Wire harness

Abstract

To provide a wire harness that can suppress the deterioration of the case of the electromagnetic wave absorbing component. [Solution] The wire harness 10 includes a wire member 20, an annular electromagnetic wave absorbing member 40 provided on the outer circumference of the wire member 20, and a protective member 70 that protects the electromagnetic wave absorbing member 40. The electromagnetic wave absorbing member 40 includes an annular magnetic core 50 and an annular synthetic resin case 60 that houses the magnetic core 50. The protective member 70 is a sheet material. The protective member 70 is formed into a cylindrical shape that surrounds the outer circumference of the case 60 over its entire circumference by winding it so that the second end 72 at the end of the winding overlaps the outer surface of the first end 71 at the beginning of the winding. The protective member 70 is provided in a position where it may be exposed to liquids such as water from above. The protective member 70 is wound so that the gap between the outer surface of the first end 71 and the inner surface of the second end 72 opens downward.

Description

Technical Field

[0001] The present disclosure relates to a wire harness.

Background Art

[0002] Conventionally, as a wire harness mounted on a vehicle such as a hybrid vehicle or an electric vehicle, there is known one including an electric wire that electrically connects a plurality of electric devices and an electromagnetic wave absorbing member that absorbs electromagnetic waves (electromagnetic noise) radiated from the electric wire. In this type of wire harness, the electromagnetic wave absorbing member is provided on the outer periphery of the electric wire by passing the electric wire through a through hole of the electromagnetic wave absorbing member (see, for example, Patent Document 1). The electromagnetic wave absorbing member has a ferrite core and a case that houses the ferrite core inside.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in the above wire harness, it is desired to suppress deterioration of the case of the electromagnetic wave absorbing member. An object of the present disclosure is to provide a wire harness capable of suppressing deterioration of the case of the electromagnetic wave absorbing member.

Means for Solving the Problems

[0005] The wire harness of this disclosure comprises a wire member, an annular electromagnetic wave absorbing member provided on the outer circumference of the wire member, and a protective member for protecting the electromagnetic wave absorbing member. The electromagnetic wave absorbing member comprises an annular magnetic core and an annular synthetic resin case housing the magnetic core. The protective member is a sheet material and is formed into a cylindrical shape that surrounds the outer circumference of the case over its entire circumference by winding the protective member so that the second end of the winding overlaps the outer surface of the first end of the winding where the winding begins. The protective member is positioned where liquid may splash onto it from above, and the protective member is wound such that the gap between the outer surface of the first end and the inner surface of the second end opens downward. [Effects of the Invention]

[0006] The wire harness of this disclosure has the effect of suppressing the deterioration of the case of the electromagnetic wave absorbing member. [Brief explanation of the drawing]

[0007] [Figure 1] Figure 1 is a diagram showing a wire harness according to one embodiment. [Figure 2] Figure 2 is a side view showing a wire harness according to one embodiment. [Figure 3] Figure 3 is a longitudinal cross-sectional view showing a wire harness according to one embodiment. [Figure 4] Figure 4 is a cross-sectional view (section along line 4-4 in Figure 3) showing a wire harness according to one embodiment. [Figure 5] Figure 5 is a side view showing a modified wire harness. [Figure 6] Figure 6 is a longitudinal cross-sectional view showing a modified wire harness. [Figure 7] Figure 7 is a perspective view showing a modified wire harness. [Figure 8] Figure 8 is a longitudinal cross-sectional view showing a modified wire harness. [Figure 9] Figure 9 is a longitudinal cross-sectional view showing a modified wire harness. [Modes for carrying out the invention]

[0008] [Description of Embodiments in this Disclosure] First, embodiments of this disclosure will be listed and described. [1] The wire harness of the present disclosure comprises a wire member, an annular electromagnetic wave absorbing member provided on the outer circumference of the wire member, and a protective member for protecting the electromagnetic wave absorbing member, wherein the electromagnetic wave absorbing member comprises an annular magnetic core and an annular synthetic resin case housing the magnetic core, the protective member is a sheet material, the protective member is formed into a cylindrical shape that surrounds the outer circumference of the case over its entire circumference by winding the protective member so that the second end of the winding overlaps the outer surface of the first end of the winding where the winding begins, the protective member is provided in a position where liquid may be sprayed from above the protective member, and the protective member is wound such that the gap between the outer surface of the first end and the inner surface of the second end opens downward.

[0009] In this configuration, the protective member, which is a sheet material, is wound so that the second end of the winding overlaps the outer surface of the first end where the winding begins, thereby forming a cylindrical shape that completely surrounds the outer circumference of the case of the electromagnetic wave absorbing member. Since the case can be covered by this protective member, the case can be protected from liquids such as water. Furthermore, the protective member is wound so that the gap between the outer surface of the first end and the inner surface of the second end opens downwards. Therefore, it is possible to effectively prevent liquids falling from above the protective member from penetrating into the interior of the protective member through the gap between the outer surface of the first end and the inner surface of the second end. As a result, it is possible to effectively prevent liquids such as water from coming into contact with the case housed inside the protective member. Consequently, it is possible to effectively prevent the case from deteriorating due to hydrolysis caused by contact with water.

[0010] [2] In the above [1], the wire member further comprises a first fixing member for fixing the protective member to the outer circumference of the wire member, wherein the first fixing member covers the outer circumference of the protective member over its entire circumference and also covers the outer circumference of the wire member over its entire circumference.

[0011] With this configuration, the protective member can be fixed to the wire member by the first fixing member. This effectively prevents the protective member from shifting position relative to the wire member. Furthermore, the first fixing member is formed to cover the entire circumference of the outer periphery of the protective member. This first fixing member effectively maintains the cylindrical shape of the protective member. This reduces the increase in the number of parts compared to cases where a separate member is provided for fixing the protective member to the wire member and for maintaining the cylindrical shape of the protective member.

[0012] [3] In the above [2], the electromagnetic wave absorbing member further comprises a second fixing member that fixes the protective member to the outer circumference of the electromagnetic wave absorbing member, wherein the second fixing member tightens the protective member toward the case such that the inner surface of the protective member is in contact with the outer surface of the case.

[0013] With this configuration, the second fixing member can reduce the gap between the inner surface of the protective member and the outer surface of the case. As a result, even if a liquid such as water penetrates into the inside of the protective member, it is possible to prevent the liquid from accumulating between the inner surface of the protective member and the outer surface of the case. Consequently, deterioration of the case due to contact with liquids such as water can be effectively suppressed.

[0014] [4] In the above [3], the electric wire member comprises an electric wire, a cylindrical first outer casing member for housing the electric wire, and a cylindrical second outer casing member for housing the electric wire and provided apart from the first outer casing member in the longitudinal direction of the electric wire, wherein the electromagnetic wave absorbing member is provided between the first outer casing member and the second outer casing member in the longitudinal direction of the electric wire, and the protective member may be provided so as to span between the outer circumference of the first outer casing member and the outer circumference of the second outer casing member.

[0015] According to this configuration, the electric wire can be protected by the first exterior member, the second exterior member, and the protection member spanned between the first exterior member and the second exterior member. Further, the protection member can protect the electromagnetic wave absorption member provided between the first exterior member and the second exterior member.

[0016] [5] In any one of [1] to [4] above, the electromagnetic wave absorption member has a through hole through which the wire member passes, the wire member has an electric wire and a cylindrical braided member surrounding the outer periphery of the electric wire, and the braided member may pass through the through hole in a state of surrounding the outer periphery of the electric wire.

[0017] According to this configuration, the braided member passes through the through hole of the electromagnetic wave absorption member in a state of surrounding the outer periphery of the electric wire. As a result, since the braided member is arranged so as to pass through the inside of the electromagnetic wave absorption member, it is possible to suppress the braided member from being arranged outside the electromagnetic wave absorption member. Therefore, it is possible to preferably suppress a braided member having a mesh from intervening between the outer peripheral surface of the case and the inner surface of the protection member. As a result, it is possible to preferably suppress liquid from accumulating between the outer peripheral surface of the case and the inner surface of the protection member through the mesh of the braided member.

[0018] [6] In [5] above, it further has a third fixing member for fixing the electromagnetic wave absorption member to the wire member, and the third fixing member may cover the outer periphery of the braided member exposed from the through hole.

[0019] According to this configuration, the electromagnetic wave absorption member can be fixed to the outer periphery of the braided member of the wire member by the third fixing member. Thereby, it is possible to preferably suppress the electromagnetic wave absorption member from being displaced with respect to the wire member.

[0020] [7] In any one of [1] to [6] above, the protection member may not have porosity and may have liquid repellency. With this configuration, the protective member has liquid-repellent properties. Therefore, even if a liquid such as water comes into contact with the protective member, it can repel the liquid. This effectively prevents the liquid from penetrating into the interior of the protective member.

[0021] [Details of the embodiments of this disclosure] Specific examples of the wire harnesses of this disclosure will be described below with reference to the drawings. In each drawing, some parts of the configuration may be exaggerated or simplified for ease of explanation. Also, the dimensional ratios of each part may differ in each drawing. As used in this specification, "tubular" includes not only those with a continuous circumferential wall formed around the entire circumference, but also those formed by combining multiple parts, or those having a cutout or the like in a C-shape in the circumferential direction. The shape of "tubular" includes, but is not limited to, circular, elliptical, and polygons with pointed or rounded corners. Also, as used in this specification, the term "annular" may refer to any structure that forms a loop, or a continuous shape without ends, as well as a structure that has a gap, such as a C-shape, but is overall loop-shaped. The shape of "annular" includes, but is not limited to, circular, elliptical, and polygons with pointed or rounded corners. As used in this specification, "facing" means that faces or members are facing each other, and includes not only cases where they are completely facing each other, but also cases where they are partially facing each other. Furthermore, the term "opposing" as used herein includes both cases where a component other than the two parts is interposed between the two parts, and cases where nothing is interposed between the two parts. Also, terms such as "first," "second," and "third" as used herein are used merely to distinguish objects and do not rank them. The present invention is not limited to these examples and is shown in the claims, and all modifications within the meaning and scope equivalent to the claims are intended.

[0022] (Overall configuration of wire harness 10) The wire harness 10 shown in Figure 1 is installed in a vehicle V, such as a hybrid vehicle or an electric vehicle. The wire harness 10 electrically connects two or more on-board devices. On-board devices are electrical devices installed in the vehicle V. For example, the wire harness 10 electrically connects an inverter 11 installed at the front of the vehicle V to a high-voltage battery 12 installed behind the inverter 11 in the vehicle V. The wire harness 10 is routed, for example, outside the passenger compartment, such as under the floor of the vehicle V. The inverter 11 is connected to a motor (not shown) for driving the wheels, which is the power source for the vehicle's movement. The inverter 11 generates AC power from the DC power of the high-voltage battery 12 and supplies that AC power to the motor. The high-voltage battery 12 is, for example, a battery capable of supplying a voltage of several hundred volts.

[0023] As shown in Figures 2 and 3, the wire harness 10 includes a wire member 20, an electromagnetic wave absorbing member 40 provided on the outer circumference of the wire member 20, and a protective member 70 that protects the electromagnetic wave absorbing member 40. The wire harness 10 also includes, for example, fixing members 81 and 82 that fix the protective member 70 to the outer circumference of the wire member 20, and fixing member 90 that fixes the protective member 70 to the outer circumference of the electromagnetic wave absorbing member 40.

[0024] (Configuration of the wire component 20) The wire member 20 includes one or more (two in this embodiment) wires 21, a cylindrical braided member 25 that covers the outer circumference of the wires 21, and an outer covering member 30. One end of each wire 21 is connected to the inverter 11 shown in Figure 1, and the other end of each wire 21 is connected to the high-voltage battery 12 shown in Figure 1. Each wire 21 is, for example, a high-voltage wire capable of handling high voltage and high current. Each wire 21 is, for example, a non-shielded wire that does not have an electromagnetic shielding structure of its own.

[0025] As shown in Figure 3, the electric wire 21 is a covered electric wire having a core wire 22 made of a conductor and an insulating coating 23 covering the outer circumference of the core wire 22. As the core wire 22, for example, a stranded wire made by twisting together multiple metal strands or a single-core wire made of a single conductor can be used. As the material of the core wire 22, for example, a metallic material such as copper or aluminum can be used.

[0026] As shown in Figure 4, the insulating coating 23 covers the entire circumference of the core wire 22, for example. The insulating coating 23 is made of, for example, an insulating resin material.

[0027] The cross-sectional shape obtained by cutting each wire 21 with a plane perpendicular to the longitudinal direction of each wire 21, that is, the cross-sectional shape of each wire 21, can be formed into any shape. The cross-sectional shape of each wire 21 can be formed into, for example, a circular shape, a semicircular shape, a polygonal shape, a square shape, or a flattened shape. In this embodiment, the cross-sectional shape of each wire 21 is formed into a circular shape.

[0028] In the following explanation, when "lengthwise direction" is used, it means the direction in which the central axis of the electric wire 21 extends, and when "circumferential direction" is used, it means the circumferential direction of the central axis of the electric wire 21. Also, in the following explanation, when "radial direction" is used, it means the radial direction of the central axis of the electric wire 21.

[0029] The braided member 25 is formed in a cylindrical shape that encloses the outer circumference of multiple electric wires 21 collectively. The braided member 25 encloses the outer circumference of multiple electric wires 21 around its entire circumference. The braided member 25 has a mesh structure. The braided member 25 is flexible. As the braided member 25, for example, a braided wire made of multiple metal strands or a braided wire made by combining metal strands and resin strands can be used. As the material for the metal strands, for example, metal materials such as copper or aluminum can be used. Each end of the braided member 25 in the longitudinal direction is connected to an earth member (not shown), such as a vehicle body or a metal case. Such a braided member 25 functions as an electromagnetic shielding member.

[0030] As shown in Figure 3, the outer casing member 30 is formed in a cylindrical shape. The electric wire 21 and the braided member 25 are housed in the internal space of the outer casing member 30. The outer casing member 30 has the function of protecting the electric wire 21 and the braided member 25 housed inside from flying objects and water droplets.

[0031] The exterior component 30 includes, for example, a corrugated tube 31 and a corrugated tube 32. The corrugated tubes 31 and 32 are made of, for example, synthetic resin. As the material for the corrugated tubes 31 and 32, for example, an insulating resin material can be used. As the resin material, for example, polyolefin, polyamide, polyester, ABS resin, etc. can be used.

[0032] (Composition of corrugated tubes 31 and 32) The corrugated tubes 31 and 32 are formed in a cylindrical shape that surrounds the outer circumference of the electric wire 21 and the braided member 25. In this embodiment, the corrugated tubes 31 and 32 are formed in a cylindrical shape. The corrugated tubes 31 and 32 are formed to surround the outer circumference of multiple electric wires 21 over the entire circumference in the circumferential direction. The corrugated tubes 31 and 32 are formed to surround the outer circumference of the braided member 25 over the entire circumference in the circumferential direction. Each of the corrugated tubes 31 and 32 has a bellows structure in which annular protrusions 33 and annular recesses 34 are alternately and continuously provided along the axial direction of the corrugated tube 31 or 32. The corrugated tubes 31 and 32 are provided at positions far apart from each other in the longitudinal direction of the electric wire 21.

[0033] (Configuration of the electromagnetic wave absorbing member 40) The electromagnetic wave absorbing member 40 is provided on a portion of the wire member 20 in the longitudinal direction. The electromagnetic wave absorbing member 40 is provided on the outer circumference of the wire member 20 located between the corrugated tube 31 and the corrugated tube 32, for example. The electromagnetic wave absorbing member 40 is provided, for example, in the longitudinal direction of the wire member 20, away from each of the corrugated tubes 31 and 32. The electromagnetic wave absorbing member 40 is exposed from the corrugated tubes 31 and 32. The electromagnetic wave absorbing member 40 is formed, for example, to collectively surround the outer circumference of multiple wires 21. The electromagnetic wave absorbing member 40 is formed, for example, to surround the outer circumference of the braided member 25 over its entire circumference.

[0034] The electromagnetic wave absorbing member 40 has an annular magnetic core 50 and an annular case 60 that houses the magnetic core 50 inside. (Configuration of the magnetic core 50) The magnetic core 50 has through holes 51 through which the wire members 20 pass. The magnetic core 50 is formed in an annular shape due to the presence of the through holes 51. The through holes 51 are formed to penetrate the magnetic core 50 in the longitudinal direction. Multiple wires 21 of the wire members 20 pass through the through holes 51. A braided member 25 of the wire members 20 also passes through the through holes 51. The braided member 25 is provided, for example, to pass through the through holes 51 while collectively surrounding the outer circumference of multiple wires 21.

[0035] The magnetic core 50 has the function of reducing electromagnetic waves radiated from the electric wire 21 by being positioned, for example, facing the electric wire 21 over its entire circumference. The magnetic core 50 absorbs electromagnetic waves radiated from the electric wire 21 and converts the energy of these electromagnetic waves into mechanical energy such as vibration or thermal energy. This reduces the adverse effects of electromagnetic waves radiated from the electric wire 21 on surrounding equipment, etc.

[0036] The magnetic core 50 is, for example, a molded body containing a soft magnetic material. Examples of soft magnetic materials include iron (Fe), iron alloys, and ferrite. Examples of iron alloys include Fe-silicon (Si) alloys and Fe-nickel (Ni) alloys. As the magnetic core 50, for example, a ferrite core, an amorphous core, or a permalloy core can be used. A ferrite core, for example, consists of soft ferrite that exhibits soft magnetism. Examples of soft ferrite include ferrite containing nickel (Ni) and zinc (Zn), and ferrite containing manganese (Mn) and zinc (Zn). The material of the magnetic core 50 can be appropriately selected, for example, according to the frequency band of the electromagnetic noise to be reduced.

[0037] The magnetic core 50 shown in Figure 4 is formed continuously along its entire circumference and is formed in a closed annular shape. That is, the magnetic core 50 shown in Figure 4 does not have a slit extending along the axial direction of the magnetic core 50. In other words, the magnetic core 50 of this embodiment is made of a single component. In this embodiment, the magnetic core 50 is made of a single component, but it is also possible to construct a magnetic core 50 that forms an annular shape by combining multiple core materials. For example, the magnetic core 50 may be made into an annular shape by combining a pair of core materials that have a semicircular cross-section.

[0038] As shown in Figure 3, the magnetic core 50 has, for example, an outer peripheral surface 52 extending along the circumferential and axial directions of the magnetic core 50, and a pair of side surfaces 53 provided at both ends of the magnetic core 50 in the axial direction. The pair of side surfaces 53 are provided, for example, between the outer peripheral surface 52 and the inner peripheral surface of the through hole 51. The outer peripheral dimensions of the magnetic core 50 are set to be larger than, for example, the outer peripheral dimensions of the corrugated tubes 31 and 32.

[0039] Here, "outer circumference dimension of member A" in this specification refers to the length of the outer circumference of member A measured around the circumferential direction of member A. Also, "inner circumference dimension of member A" in this specification refers to the length of the inner circumference of member A measured around the circumferential direction of member A.

[0040] (Configuration of Case 60) The case 60 has through holes 61 through which the electric wire members 20 pass. The case 60 is formed in an annular shape due to the presence of the through holes 61. The through holes 61 are formed to penetrate the case 60 in the longitudinal direction. Multiple electric wires 21 and a braided member 25 that surrounds the outer circumference of these multiple electric wires 21 pass through the through holes 61.

[0041] The case 60 has, for example, a circumferential wall 62 extending along the circumferential and axial directions of the case 60, and a pair of side walls 63 provided at both ends of the case 60 in the axial direction. Each side wall 63 has a through hole 61 that penetrates through the side wall 63 in the axial direction.

[0042] The case 60 has a housing section 65 for housing the magnetic core 50. The housing section 65 is formed to a size that can accommodate the magnetic core 50. The housing section 65 is formed to communicate with, for example, a through hole 61. The housing section 65 is composed of a space enclosed by, for example, the inner surface of a peripheral wall 62 and the inner surface of a side wall 63. The housing section 65 is formed to surround, for example, the outer circumferential surface 52 of the magnetic core 50. The peripheral wall 62 is formed to cover, for example, the outer circumferential surface 52 of the magnetic core 50. The inner surface of the peripheral wall 62 is formed to face, for example, the outer circumferential surface 52 of the magnetic core 50. The housing section 65 is formed to surround, for example, the side surfaces 53 of the magnetic core 50. Each side wall 63 is formed to cover, for example, the side surfaces 53 of the magnetic core 50. The inner surface of each side wall 63 is formed to face, for example, the side surfaces 53 of the magnetic core 50.

[0043] In this embodiment, the case 60 is attached to the outer circumference of the wire member 20 exposed from the corrugated tubes 31 and 32, with the magnetic core 50 housed within the housing portion 65. At this time, the magnetic core 50 is held, for example, by the housing portion 65 of the case 60 and the outer surface of the wire member 20.

[0044] The case 60 may, for example, have a slit extending along the axial direction of the case 60, or it may not have a slit extending along the axial direction of the case 60. The case 60 may be made of a single part, or it may be made by combining multiple parts.

[0045] Case 60 is made of, for example, synthetic resin. Examples of materials that can be used for case 60 include synthetic resins such as polyolefin, polyamide, polyester, and ABS resin.

[0046] (Configuration of protective member 70) The protective member 70 is provided, for example, so as to span between the outer circumference of corrugated tube 31 and the outer circumference of corrugated tube 32. The protective member 70 as a whole is formed in a cylindrical shape that surrounds the outer circumference of the wire member 20. The protective member 70 is formed to surround the outer circumference of the wire member 20 located between corrugated tube 31 and corrugated tube 32. The protective member 70 is formed to surround the outer circumference of multiple wires 21 over the entire circumference in the circumferential direction. The protective member 70 is formed to surround the outer circumference of the braided member 25 over the entire circumference in the circumferential direction. The protective member 70 is formed to surround the outer circumference of corrugated tubes 31 and 32 over the entire circumference in the circumferential direction. The protective member 70 is formed to surround the outer circumference of the electromagnetic wave absorbing member 40.

[0047] The protective member 70 is installed in a location where it may be exposed to water. The protective member 70 is installed in a location where it may be exposed to liquid such as water from above. For example, the protective member 70 may be exposed to water droplets falling along the first direction X1 from equipment such as a radiator (not shown) located above the protective member 70 in the figure. The protective member 70 has the function of protecting the electromagnetic wave absorbing member 40, which is located inside the protective member 70, from water droplets. Specifically, the protective member 70 has the function of preventing liquid such as water from coming into contact with the case 60 of the electromagnetic wave absorbing member 40.

[0048] As shown in Figure 4, the protective member 70 is a sheet material. The protective member 70 is formed to form a cylinder by, for example, winding a single flexible sheet material in the circumferential direction. The protective member 70 is formed to form a cylinder by, for example, winding the sheet material more than once. The protective member 70 is formed to form a cylinder by, for example, winding the sheet material in a sushi roll or spiral shape. The protective member 70 is formed to form a cylinder by winding so that the end of the second end 72 overlaps the outer surface of the first end 71 where the winding begins. The protective member 70 is formed to form a cylinder by overlapping the first end 71 and the second end 72 so that the end face 73 of the second end 72 faces a first direction X1 (downward in this case). That is, the protective member 70 is wound so that the gap between the outer surface of the first end 71 and the inner surface of the second end 72 opens downward.

[0049] Here, the inner surface of the protective member 70 is the surface facing the electric wire member 20 and the electromagnetic wave absorbing member 40, and is the surface facing radially inward of the cylindrical protective member 70. The outer surface of the protective member 70 is the surface located on the opposite side from the inner surface of the protective member 70, and is the surface facing radially outward of the cylindrical protective member 70.

[0050] The inner circumference of the protective member 70 can be adjusted to match the outer circumference of the electromagnetic wave absorbing member 40 by, for example, adjusting the overlap width between the first end 71 and the second end 72. The protective member 70 has elasticity that allows it to return from a cylindrical state that can surround the outer circumference of the electromagnetic wave absorbing member 40 to a sheet state that does not surround the outer circumference of the electromagnetic wave absorbing member 40.

[0051] As the material for the protective member 70, synthetic resins such as polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), and polyethylene terephthalate (PET) can be used. The protective member 70 is a non-porous sheet material. The protective member 70 has, for example, liquid-repellent properties. Here, liquid-repellent properties mean water-repellent, oil-repellent, or both. The protective member 70 may have a water-repellent portion only in a part thereof, for example, only in the upper part which is prone to water contact. Such a water-repellent portion can be formed, for example, by applying a fluorine-based water-repellent agent or a silicone-based waterproofing material to the outer surface of the protective member 70.

[0052] (Configuration of fixing members 81 and 82) As shown in Figure 3, the protective member 70 is fixed to the outer circumference of the wire member 20 by, for example, fixing members 81 and 82. The protective member 70 is fixed to the outer circumference of the corrugated tubes 31 and 32 by, for example, fixing members 81 and 82. As fixing members 81 and 82, for example, tape members, cable ties or crimping bands can be used. In this embodiment, the fixing members 81 and 82 are tape members.

[0053] The fixing member 81 is formed to fix the longitudinal end (right end in the figure) of the protective member 70 to the outer circumferential surface of the corrugated tube 31. The fixing member 81 is wound, for example, over the outer circumferential surface of the longitudinal end of the protective member 70 and the outer circumferential surface of the corrugated tube 31 exposed from the protective member 70. The fixing member 81 is wound, for example, continuously over the range from the outer circumferential surface of the protective member 70 to the outer circumferential surface of the corrugated tube 31. The fixing member 81 covers, for example, the entire circumference of the outer circumferential surface of the protective member 70 and the entire circumference of the outer circumferential surface of the corrugated tube 31. The fixing member 81 is wound, for example, around the outer circumferential surface of the end of the protective member 70 so that the cylindrical shape of the protective member 70 is maintained. The fixing member 81 has, for example, an overlapping winding structure.

[0054] Here, the overlap winding structure is a structure in which tape members are wound spirally so that predetermined portions of the tape members overlap in the width direction. An example of an overlap winding structure is a half-wrap winding, in which tape members are wound spirally so that approximately half of the tape members overlap in the width direction.

[0055] The fixing member 82 is formed to fix the longitudinal end (left end in the figure) of the protective member 70 to the outer circumferential surface of the corrugated tube 32. The fixing member 82 is, for example, wound over the outer circumferential surface of the longitudinal end of the protective member 70 and the outer circumferential surface of the corrugated tube 32 exposed from the protective member 70. The fixing member 82 is, for example, wound continuously over the range from the outer circumferential surface of the protective member 70 to the outer circumferential surface of the corrugated tube 32. The fixing member 82 covers the outer circumference of the protective member 70 over its entire circumference and also covers the outer circumference of the corrugated tube 32 over its entire circumference. The fixing member 82 is, for example, wound around the outer circumference of the end of the protective member 70 so that the cylindrical shape of the protective member 70 is maintained. The fixing member 82 has, for example, an overlapping winding structure.

[0056] (Configuration of the fixing member 90) The fixing member 90 is formed to fix the protective member 70 to the outer circumference of the electromagnetic wave absorbing member 40. The fixing member 90 is formed to tighten the protective member 70 toward the electromagnetic wave absorbing member 40. As the fixing member 90, for example, a tape member, a cable tie, or a crimping band can be used. In this embodiment, the fixing member 90 is a tape member.

[0057] The fixing member 90 tightens the protective member 70 toward the case 60, that is, radially inward, so that the inner surface of the protective member 70 comes into contact with the outer surface of the peripheral wall 62 of the case 60. The fixing member 90 is provided, for example, in a position that overlaps with the peripheral wall 62 of the case 60 in the longitudinal direction of the electric wire 21. For example, the fixing member 90 is provided so that it overlaps with the middle portion of the peripheral wall 62 in the longitudinal direction of the electric wire 21. That is, the fixing member 90 is provided so that it faces the middle portion of the peripheral wall 62 in the radial direction. The fixing member 90 is not provided, for example, in a position that overlaps with the end of the peripheral wall 62, specifically the corner between the peripheral wall 62 and the side wall 63, in the longitudinal direction of the electric wire 21.

[0058] The fixing member 90 has, for example, an overlap-wound structure. Although detailed illustrations are omitted, the fixing member 90 is wound multiple times around the entire circumference of the protective member 70, for example, by a half-wound structure. The fixing member 90 is wound around the outer circumference of the protective member 70, for example, so that the cylindrical shape of the protective member 70 is maintained.

[0059] As shown in Figure 4, the inner surface of the protective member 70 is in contact with the outer surface of the peripheral wall 62 of the case 60 over its entire circumference due to the tightening by the fixing member 90. (Effects of this embodiment) Next, the effects and advantages of this embodiment will be explained.

[0060] (1) The wire harness 10 includes a wire member 20, an annular electromagnetic wave absorbing member 40 provided on the outer circumference of the wire member 20, and a protective member 70 that protects the electromagnetic wave absorbing member 40. The electromagnetic wave absorbing member 40 includes an annular magnetic core 50 and an annular synthetic resin case 60 that houses the magnetic core 50. The protective member 70 is a sheet material. The protective member 70 is formed into a cylindrical shape that surrounds the outer circumference of the case 60 over its entire circumference by winding it so that the second end 72 at the end of the winding overlaps the outer surface of the first end 71 at the beginning of the winding. The protective member 70 is provided in a position where it may be exposed to liquids such as water from above. The protective member 70 is wound so that the gap between the outer surface of the first end 71 and the inner surface of the second end 72 opens downwards.

[0061] In this configuration, the protective member 70, which is a sheet material, is formed into a cylindrical shape that surrounds the outer circumference of the case 60 of the electromagnetic wave absorbing member 40 around its entire circumference by overlapping the second end 72, which is the end of the winding, with the first end 71, which is the beginning of the winding, with the second end 72, which is the end of the winding. Since the case 60 can be covered by this protective member 70, the case 60 can be protected from liquids such as water. Furthermore, the protective member 70 is wound so that the gap between the outer surface of the first end 71 and the inner surface of the second end 72 opens downwards. Therefore, it is possible to effectively prevent liquids falling from above the protective member 70 from penetrating into the interior of the protective member 70 through the gap between the outer surface of the first end 71 and the inner surface of the second end 72. As a result, it is possible to effectively prevent liquids such as water from coming into contact with the case 60 housed inside the protective member 70. Consequently, it is possible to effectively prevent deterioration of the case 60 due to hydrolysis caused by contact with water. As a result, it is possible to effectively prevent problems such as the magnetic core 50 falling off the case 60 due to deterioration of the case 60.

[0062] (2) By wrapping the protective member 70, which is a sheet material, around the outer circumference of the case 60, the case 60 can be easily waterproofed. Therefore, there is no need to manufacture a special protector that matches the shape and size of the case 60, and thus manufacturing costs can be reduced.

[0063] (3) Fixing members 81 and 82 are provided on the outer circumference of the wire member 20 to fix the protective member 70. The fixing members 81 and 82 cover the outer circumference of the protective member 70 over its entire circumference, and also cover the outer circumference of the wire member 20, and in this embodiment, the outer circumference of the corrugated tubes 31 and 32 over its entire circumference.

[0064] With this configuration, the protective member 70 can be fixed to the wire member 20 by the fixing members 81 and 82. This effectively prevents the protective member 70 from shifting relative to the wire member 20 and the electromagnetic wave absorbing member 40. Furthermore, the fixing members 81 and 82 are formed to cover the entire circumference of the outer periphery of the protective member 70. These fixing members 81 and 82 effectively maintain the cylindrical shape of the protective member 70. This reduces the increase in the number of parts compared to a case where separate members are provided for fixing the protective member 70 to the wire member 20 and for maintaining the cylindrical shape of the protective member 70.

[0065] (4) A fixing member 90 is provided on the outer circumference of the electromagnetic wave absorbing member 40 to fix the protective member 70. The fixing member 90 tightens the protective member 70 toward the case 60 so that the inner surface of the protective member 70 is in contact with the outer surface of the case 60.

[0066] With this configuration, the fixing member 90 can reduce the gap between the inner surface of the protective member 70 and the outer surface of the case 60. As a result, even if a liquid such as water penetrates into the inside of the protective member 70, it is possible to prevent the liquid from accumulating between the inner surface of the protective member 70 and the outer surface of the case 60. Consequently, deterioration of the case 60 due to contact with liquids such as water can be effectively suppressed.

[0067] (5) The electric wire 21 can be protected by the corrugated tube 31, the corrugated tube 32, and the protective member 70 that is stretched between the corrugated tubes 31 and 32. In addition, the protective member 70 can protect the electromagnetic wave absorbing member 40 that is installed between the corrugated tube 31 and the corrugated tube 32.

[0068] (6) The braided member 25 is passed through the through-hole 51 of the electromagnetic wave absorbing member 40 while surrounding the outer circumference of the electric wire 21. As a result, the braided member 25 is positioned to pass inside the electromagnetic wave absorbing member 40, thus preventing the braided member 25 from being positioned outside the electromagnetic wave absorbing member 40. Therefore, it is possible to effectively prevent the braided member 25, which has a mesh, from being interposed between the outer surface of the case 60 and the inner surface of the protective member 70. As a result, it is possible to effectively prevent liquid from accumulating between the outer surface of the case 60 and the inner surface of the protective member 70 through the mesh of the braided member 25.

[0069] (7) The protective member 70 is not porous and has liquid-repellent properties. Therefore, even if a liquid such as water comes into contact with the protective member 70, it can repel the liquid. This effectively prevents liquid from penetrating into the interior of the protective member 70.

[0070] (Example of change) The above embodiment can be implemented with the following modifications. The above embodiment and the following modifications can be combined with each other to the extent that they do not contradict each other technically.

[0071] In the above embodiment, the fixing member 81 is formed to cover the outer circumference of the protective member 70 that surrounds the outer circumference of the corrugated tube 31 in the longitudinal direction of the electric wire 21, but it is not limited to this. For example, the formation range of the fixing member 81 may be changed as appropriate.

[0072] For example, as shown in Figure 5, the fixing member 81 may be formed to cover the outer circumference of the protective member 70 in the portion that surrounds the braided member 25 located between the corrugated tube 31 and the corrugated tube 32 in the longitudinal direction of the electric wire 21. Specifically, the fixing member 81 in this modified example is formed to cover the outer circumference of the protective member 70 in the portion that surrounds the braided member 25 located between the corrugated tube 31 and the electromagnetic wave absorbing member 40 in the longitudinal direction of the electric wire 21. That is, the fixing member 81 in this modified example is formed to face the braided member 25 located between the corrugated tube 31 and the electromagnetic wave absorbing member 40 in the radial direction. The fixing member 81 in this modified example is formed to tighten the protective member 70 radially inward, that is, toward the braided member 25. This makes it possible to reduce the inner circumference of the protective member 70 in the portion where the fixing member 81 is formed. Therefore, the movement of the electromagnetic wave absorbing member 40 inside the protective member 70 can be suitably restricted.

[0073] In the above embodiment, the fixing member 82 is formed to cover the outer circumference of the protective member 70 that surrounds the outer circumference of the corrugated tube 32 in the longitudinal direction of the electric wire 21, but it is not limited to this. For example, the formation range of the fixing member 82 may be changed as appropriate.

[0074] For example, as shown in Figure 5, the fixing member 82 may be formed to cover the outer circumference of the protective member 70 in the portion that surrounds the braided member 25 located between the corrugated tube 32 and the electromagnetic wave absorbing member 40 in the longitudinal direction of the electric wire 21. That is, in this modified example, the fixing member 82 is formed to face the braided member 25 located between the corrugated tube 32 and the electromagnetic wave absorbing member 40 in the radial direction. In this modified example, the fixing member 82 is formed to tighten the protective member 70 toward the braided member 25. This makes it possible to reduce the inner circumference of the protective member 70 in the portion where the fixing member 82 is formed. Therefore, the movement of the electromagnetic wave absorbing member 40 inside the protective member 70 can be suitably restricted.

[0075] For example, as shown in Figures 6 and 7, the electromagnetic wave absorbing member 40 may have a fixing member 100 that secures it to the electric wire member 20. The fixing member 100 is, for example, a tape member. The fixing member 100 is wrapped around the electromagnetic wave absorbing member 40 and the electric wire member 20 so as to cover only a portion of the outer surface of the electromagnetic wave absorbing member 40. An example of how to wrap the fixing member 100, which is a tape member, will be described below.

[0076] As shown in Figure 6, the fixing member 100 integrally has, for example, eight regions A1 to A8. Region A1 is the region in which the fixing member 100 is wound around the braided member 25 that is led out from the through hole 61 of the electromagnetic wave absorbing member 40 towards the corrugated tube 31. In region A1, for example, the fixing member 100 is wound multiple times around the entire circumference in the circumferential direction. In region A1, the fixing member 100 has, for example, an overlap winding structure.

[0077] As shown in Figure 7, region A2 is a region connected to region A1. Region A2 is a region in which the fixing member 100 (tape member) extends under tension from, for example, the outer circumferential surface of the braided member 25 toward the outer circumferential surface of the peripheral wall 62 of the case 60. The fixing member 100 in region A2 is provided so as to span between the outer circumferential surface of the braided member 25 and the outer circumferential surface of the peripheral wall 62. The fixing member 100 in region A2 is provided so as to face, for example, the side wall 63 of the case 60.

[0078] Region A3 is a region connected to region A2. Region A3 is, for example, a region in which the fixing member 100 is wrapped around the outer surface of the peripheral wall 62. In region A3, the fixing member 100 covers, for example, a part of the outer surface of the peripheral wall 62. In region A3, the fixing member 100 is, for example, adhered to a part of the outer surface of the peripheral wall 62.

[0079] As shown in Figure 6, region A4 is a region connected to region A3. Region A4 is a region in which the fixing member 100 extends under tension from, for example, the outer circumferential surface of the case 60 toward the outer circumferential surface of the braided member 25 that is led out from the through hole 61 of the electromagnetic wave absorbing member 40 toward the corrugated tube 32 side. The fixing member 100 in region A4 is provided so as to span between the outer circumferential surface of the case 60 and the outer circumferential surface of the braided member 25. The fixing member 100 in region A4 is provided so as to face the side wall 63 of the case 60.

[0080] The fixing members 100 in regions A2 to A4 are formed to extend at an inclination so as to intersect the circumferential direction of the electromagnetic wave absorbing member 40 and also intersect the longitudinal direction of the electric wire 21, for example.

[0081] Region A5 is a region connected to region A4. Region A5 is a region in which the fixing member 100 is wound around the braided member 25 in the portion that is led out from the through hole 61 of the electromagnetic wave absorbing member 40 towards the corrugated tube 32 side. In region A5, for example, the fixing member 100 is wound around the braided member 25 multiple times around its entire circumference. The fixing member 100 in region A5 has, for example, an overlap winding structure.

[0082] Region A6 is a region connected to region A5. Region A6 is a region in which the fixing member 100 extends under tension from, for example, the outer surface of the braided member 25 toward the outer surface of the peripheral wall 62. The fixing member 100 in region A6 is provided so as to span between the outer surface of the braided member 25 and the outer surface of the peripheral wall 62. The fixing member 100 in region A6 is provided so as to face, for example, the side wall 63 of the case 60.

[0083] Region A7 is a region connected to region A6. Region A7 is, for example, a region in which the fixing member 100 is wrapped around the outer circumferential surface of the peripheral wall 62. The fixing member 100 in region A7 is formed to intersect with the fixing member 100 in region A3, for example. The fixing member 100 in region A7 covers, for example, a part of the outer circumferential surface of the peripheral wall 62. The fixing member 100 in region A7 is, for example, adhered to a part of the outer circumferential surface of the peripheral wall 62 and also adhered to a part of the fixing member 100 in region A3.

[0084] Region A8 is a region connected to region A7. Region A8 is, for example, a region in which the fixing member 100 extends under tension from the outer circumferential surface of case 60 toward region A1. The fixing member 100 in region A8 is provided so as to span between the outer circumferential surface of case 60 and the outer circumferential surface of braided member 25. The fixing member 100 in region A8 is provided so as to face the side wall 63 of case 60.

[0085] The fixing members 100 in regions A6 to A8 are formed to extend at an inclination so as to intersect the circumferential direction of the electromagnetic wave absorbing member 40 and also intersect the longitudinal direction of the electric wire 21. The fixing members 100 in regions A6 to A8 are formed to intersect with the fixing members 100 in regions A2 to A4. The fixing members 100 in regions A6 to A8 are formed to overlap with a portion of the fixing members 100 in regions A2 to A4.

[0086] With this configuration, the fixing member 100 can fix the electromagnetic wave absorbing member 40 to the outer circumference of the braided member 25 of the electric wire member 20. This effectively prevents the electromagnetic wave absorbing member 40 from shifting relative to the electric wire member 20.

[0087] In the above embodiment, the braided member 25 is passed through the through holes 51 and 61 of the electromagnetic wave absorbing member 40 while surrounding the outer circumference of the multiple electric wires 21, but the embodiment is not limited to this. For example, as shown in Figure 8, the braided member 25 may be formed to surround the outer circumference of the electromagnetic wave absorbing member 40. In this case, the braided member 25 is formed to surround the outer circumference of the case 60 over its entire circumference. In this modified example, the braided member 25 is provided to be interposed between the outer surface of the case 60 and the inner surface of the protective member 70.

[0088] The fixing member 90 in the above embodiment may be omitted. The fixing members 81 and 82 in the above embodiment may be omitted. In this case, it is preferable that the protective member 70 has an adhesive layer on one surface. By having such an adhesive layer, when the first end 71 and the second end 72 are overlapped, the first end 71 and the second end 72 can be bonded together. This allows the cylindrical shape of the protective member 70 to be suitably maintained.

[0089] The structure of the wire member 20 in the above embodiment can be modified as appropriate. In the above embodiment, the first exterior member is embodied in a corrugated tube 31 and the second exterior member in a corrugated tube 32, but the embodiment is not limited to this. For example, the first and second exterior members may be made of rigid resin pipes, metal pipes, or rubber waterproof covers. For example, the first and second exterior members may be made of different types of exterior members.

[0090] For example, as shown in Figure 9, the corrugated tubes 31 and 32 may be omitted. In this case, each end of the protective member 70 in the longitudinal direction is fixed to the outer circumference of the braided member 25 by, for example, fixing members 81 and 82.

[0091] • The braided member 25 in the above embodiment may be replaced with another electromagnetic shielding member, such as metal foil. The braided member 25 in the above embodiment may be omitted.

[0092] The electric wire 21 in the above embodiment may be replaced with a shielded electric wire having an electromagnetic shielding structure of its own. The electric wire 21 in the above embodiment may be changed to a low-voltage electric wire.

[0093] The number and installation location of the electromagnetic wave absorbing members 40 in the above embodiment are not particularly limited. For example, two or more electromagnetic wave absorbing members 40 may be provided for one electric wire member 20. The electromagnetic wave absorbing members 40 may be installed outside the vehicle compartment or inside the vehicle compartment.

[0094] In the above embodiment, the wire harness 10 had two wires 21, but this is not particularly limited, and the number of wires 21 can be changed according to the specifications of the vehicle V. For example, the wire harness 10 may have one wire 21, or three or more wires 21.

[0095] The arrangement of the inverter 11 and the high-voltage battery 12 in vehicle V is not limited to the above embodiment and may be changed as appropriate depending on the configuration of vehicle V. In the above embodiment, an inverter 11 and a high-voltage battery 12 were used as electrical equipment connected by the wire harness 10, but the invention is not limited to these. For example, it may be implemented as a wire harness connecting the inverter 11 and a motor for wheel drive. In other words, it is applicable as long as it electrically connects electrical equipment mounted on a vehicle V.

[0096] The embodiments disclosed herein should be considered in all respects to be illustrative and not restrictive. The scope of the present invention is indicated by the claims, not in the sense described above, and all modifications are intended to be in the sense and scope equivalent to the claims. [Explanation of Symbols]

[0097] V Vehicle 10 Wire Harnesses 11 Inverters 12 High-voltage batteries 20 Wire components 21 Electric wire 22 core wires 23 Insulating coating 25 Braided components 30 Exterior components 31. Corrugated tube (first outer covering component) 32. Corrugated tube (second outer casing component) 33 Annular protrusion 34 Annular recess 40 Electromagnetic wave absorbing material 50 Magnetic Cores 51 Through hole 52 Outer surface 53 Side view 60 cases 61 Through hole 62 Peripheral wall 63 Side wall 65 Storage Unit 70 Protective component 71 First end 72 Second end 73 End face 81,82 Fixing members (first fixing member) 90 Fixing member (second fixing member) 100 Fixing member (third fixing member) A1,A2,A3,A4,A5,A6,A7,A8 area X1 1st direction

Claims

1. Electrical wire components, An annular electromagnetic wave absorbing member provided on the outer circumference of the aforementioned electric wire member, The electromagnetic wave absorbing member has a protective member, The electromagnetic wave absorbing member comprises an annular magnetic core and an annular synthetic resin case that houses the magnetic core. The protective member is a sheet material, The protective member is formed in a cylindrical shape that surrounds the entire circumference of the case by winding it so that the second end of the winding overlaps the outer surface of the first end of the winding where it begins. The protective member is provided in a position where liquid may be poured onto it from above. The protective member is a wire harness wound such that the gap between the outer surface of the first end and the inner surface of the second end opens downward.

2. The wire member further has a first fixing member that fixes the protective member to the outer circumference of the wire member, The wire harness according to claim 1, wherein the first fixing member covers the outer circumference of the protective member over its entire circumference and also covers the outer circumference of the electric wire member over its entire circumference.

3. The electromagnetic wave absorbing member further has a second fixing member that fixes the protective member to the outer circumference of the electromagnetic wave absorbing member, The wire harness according to claim 2, wherein the second fixing member tightens the protective member toward the case such that the inner surface of the protective member is in contact with the outer surface of the case.

4. The wire member comprises a wire, a cylindrical first outer casing member for housing the wire, and a cylindrical second outer casing member for housing the wire and provided separately from the first outer casing member in the longitudinal direction of the wire. The electromagnetic wave absorbing member is provided between the first outer casing member and the second outer casing member in the longitudinal direction of the electric wire. The wire harness according to claim 3, wherein the protective member is provided so as to be stretched between the outer circumference of the first outer casing member and the outer circumference of the second outer casing member.

5. The electromagnetic wave absorbing member has a through hole through which the electric wire member passes, The aforementioned wire member comprises a wire and a cylindrical braided member that surrounds the outer circumference of the wire. The wire harness according to claim 1, wherein the braided member surrounds the outer circumference of the electric wire and passes through the through hole.

6. The electromagnetic wave absorbing member further comprises a third fixing member for fixing the electromagnetic wave absorbing member to the electric wire member. The wire harness according to claim 5, wherein the third fixing member covers the outer circumference of the braided member that is exposed from the through hole.

7. The wire harness according to claim 1, wherein the protective member is not porous and has liquid-repellent properties.

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