Wire harness

Abstract

To provide a wire harness with which it is possible to protect an electric wire member that is inserted into a cylindrical member.SOLUTION: A wire harness 10 comprises: an electric wire member 20 including a second electric wire 24 configured from a core wire 25 and an insulating coating 26 with which the core wire 25 is coated; a protection member 71 covering the periphery of the insulating coating 26; and a cylindrical member 30 into which the electric wire member 20 is inserted and which has a bent part 34A. The protection member 71 is provided in a portion corresponding to the bent part 34A of the electric wire member 20.SELECTED DRAWING: Figure 2

Description

[Technical Field]

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

[0002] Conventionally, wire harnesses installed under the floor of a vehicle have been made by bending a pipe through which electric wires are inserted into a predetermined shape. There is a wire harness that connects a plurality of electric wires and includes a tube that covers the connection portion (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-161242 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-described wire harness, due to manufacturing reasons, the electric wires are likely to come into contact with the inner periphery of the bent portion of the pipe. Furthermore, when the vehicle is running, the area under the floor where the wire harness is installed is likely to become hot. Therefore, if vibrations from the vehicle body are applied to the wire harness while the electric wires are in contact with the pipe, the coating material that covers the core wires of the electric wires is likely to become thinner. As a result, the insulation reliability of the wire harness may be reduced. The tube in Patent Document 1 improves the watertightness of the connection portion, but does not solve the above-described problems.

[0005] An object of the present disclosure is to provide a wire harness that can protect electric wire members inserted into a tubular member. [Means for solving the problem]

[0006] The wire harness of the present disclosure includes an electric wire member composed of a core wire and an insulating coating that covers the core wire, a protective member that covers the periphery of the insulating coating, and a tubular member through which the electric wire member is inserted and which has a bent portion, and the protective member is provided at a position on the electric wire member that corresponds to the bent portion. [Effects of the Invention]

[0007] The wire harness of the present disclosure has an effect of protecting the electric wires inserted into the pipe. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic diagram showing a wire harness according to an embodiment. [Figure 2] FIG. 2 is a schematic cross-sectional view showing a wire harness according to an embodiment. [Figure 3] FIG. 3 is a schematic cross-sectional view (cross-sectional view taken along line 3-3 in FIG. 2) showing the wire harness of the embodiment. [Figure 4] FIG. 4 is a schematic cross-sectional view showing the wire harness of the first modified example. [Figure 5] FIG. 5 is a schematic cross-sectional view showing a wire harness according to the second modification. [Figure 6] FIG. 6 is a schematic cross-sectional view (cross-sectional view taken along line 6-6 in FIG. 5) showing the wire harness of the second modified example. [Figure 7] FIG. 7 is a schematic cross-sectional view showing a wire harness according to a third modified example. [Figure 8] FIG. 8 is a schematic diagram showing a wire harness according to the fourth modification. [Figure 9] FIG. 9 is a schematic cross-sectional view showing a wire harness according to the fourth modification. [Figure 10] FIG. 10 is a schematic cross-sectional view (cross-sectional view taken along line 10-10 in FIG. 9) showing the wire harness of the fourth modified example. [Figure 11] FIG. 11 is a schematic side view showing a wire harness of a comparative example. [Figure 12]FIG. 12 is a schematic cross-sectional view (cross-sectional view taken along line 12-12 in FIG. 11) showing the wire harness of the comparative example. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described. [1] A wire harness according to the present disclosure includes an electric wire member including a core wire and an insulating coating covering the core wire, a protective member covering the insulating coating, and a tubular member through which the electric wire member is inserted and having a bent portion, the protective member being provided at a position of the electric wire member corresponding to the bent portion. With this configuration, the protective member makes it difficult for the electric wire member to come into contact with the inner peripheral side of the bent portion of the tubular member, thereby protecting the electric wire member.

[0010] [2] In the above [1], the thermal expansion coefficient of the protective member is equal to that of the insulating coating. With this configuration, the protective member and the insulating coating of the electric wire member have the same thermal expansion coefficient, so that damage to the insulating coating due to the difference in thermal expansion coefficient between the protective member and the insulating coating can be suppressed.

[0011] [3] In the above [1] or [2], the electric wire member is one of a plurality of electric wire members, the plurality of electric wire members are inserted into the tubular member, and the protective member bundles the plurality of electric wire members. According to this configuration, since the plurality of electric wire members are bundled by the protective member, the plurality of electric wire members can be easily inserted into the tubular member.

[0012] [4] In the above [1] or [2], the electric wire member is one of a plurality of electric wire members, the plurality of electric wire members are inserted into the tubular member, and the protective member covers the periphery of the insulating coating of at least the electric wire member closest to the bent portion among the plurality of electric wire members. According to this configuration, the electric wire member that is likely to come into contact with the tubular member can be protected by the protective member.

[0013] [5] In the above [1] or [2], the electric wire member is one of a plurality of electric wire members, the plurality of electric wire members are inserted into the tubular member, and the protective member covers the periphery of the insulating coating of each of the plurality of electric wire members. With this configuration, the insulating coating of each of the plurality of electric wire members can be individually protected by the protective member. Therefore, the difference in curvature between the inner electric wire member and the outer electric wire member at the bent portion of the tubular member can be absorbed.

[0014] [Details of the embodiments of the present disclosure] Specific examples of the wire harness of the present disclosure will be described below with reference to the drawings. In each drawing, for convenience of explanation, some of the configuration may be exaggerated or simplified. Furthermore, the dimensional ratios of each part may differ from one drawing to another. In this specification, "parallel" and "orthogonal" do not only refer to cases where the wiring harness is strictly parallel or orthogonal, but also include cases where the wiring harness is roughly parallel or orthogonal within the scope of the effects of this embodiment. Note that the present invention is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0015] An embodiment of a wire harness 10 will be described below with reference to FIGS. (Overall configuration of the wire harness 10) 1, the wire harness 10 electrically connects electric devices M1 and M2. The wire harness 10 may be configured to connect three or more electric devices.

[0016] The wire harness 10 is mounted on a vehicle 11, such as a hybrid vehicle or an electric vehicle. The wire harness 10 has one or more (two in this embodiment) electric wire members 20 that electrically connect an electric device M1 and an electric device M2. The wire harness 10 has, for example, a tubular member 30 through which the multiple electric wire members 20 pass, and a tubular exterior member 41 that surrounds the multiple electric wire members 20 drawn out from the tubular member 30. The tubular member 30 and the exterior member 41 protect the electric wire members 20 housed therein from flying objects and water droplets. The wire harness 10 has, for example, a path that is bent in a two-dimensional or three-dimensional shape.

[0017] (Configuration of the electric wire member 20) The wire harness 10 is routed from the electric device M1 to the electric device M2, for example, with a portion of its length passing under the floor of the vehicle 11. One end of each electric wire member 20 is connected to the electric device M1, and the other end of each electric wire member 20 is connected to the electric device M2. As an example of the electric devices M1 and M2, the electric device M1 is an inverter provided near the front of the vehicle 11, and the electric device M2 is a high-voltage battery provided behind the electric device M1 on the vehicle 11. The inverter is connected, for example, to a wheel drive motor that serves as a power source for running the vehicle. The inverter generates AC power from DC power from the high-voltage battery and supplies the AC power to the motor. The high-voltage battery is, for example, a battery capable of supplying a voltage of 100 volts or more.

[0018] As shown in FIG. 2 , each electric wire member 20 has a first electric wire 21 and a second electric wire 24 electrically connected to the first electric wire 21. As an example, the first electric wire 21 is a flexible electric wire, and the second electric wire 24 is a rigid electric wire. That is, in this embodiment, each electric wire member 20 is formed by electrically connecting different types of first electric wires 21 and second electric wires 24 in the length direction of the electric wire member 20. Note that the electric wire member 20 may also be formed by electrically connecting the same type of first electric wires 21 and second electric wires 24. A flexible electric wire is more flexible than a rigid electric wire. A flexible electric wire has higher bendability than a rigid electric wire. For example, a rigid electric wire is formed to have higher bending rigidity than a flexible electric wire. For example, a rigid electric wire has rigidity that allows the electric wire member 20 to maintain its shape along the routing path. The rigid electric wire has a degree of rigidity such that, when mounted on a vehicle 11 (see FIG. 1), the straight or bent state is not released due to vibrations of the vehicle 11. For example, when the rigid electric wire is routed along a curved path, the rigid electric wire is bent to maintain the bent shape.

[0019] As shown in FIGS. 1 and 2 , each electric wire member 20 has a connection portion 27 where a first electric wire 21 and a second electric wire 24 are joined, and a covering member 28 that covers the outer periphery of the connection portion 27. The first electric wire 21 is connected to both longitudinal ends of the second electric wire 24. In this embodiment, the longitudinal intermediate portion of each electric wire member 20 is formed by the second electric wire 24, and both longitudinal ends of each electric wire member 20 are formed by the first electric wire 21. The first electric wire 21 and the second electric wire 24 are, for example, high-tension electric wires that can handle high voltages and large currents. The first electric wire 21 and the second electric wire 24 may be, for example, shielded electric wires that have an electromagnetic shielding structure themselves, or may be non-shielded electric wires that do not have an electromagnetic shielding structure themselves. The first electric wire 21 and the second electric wire 24 in this embodiment are non-shielded electric wires.

[0020] (Configuration of the first electric wire 21) As shown in Fig. 2, the first electric wire 21 has a core wire 22 made of a plurality of metal wires and an insulating coating 23 that covers the outer periphery of the core wire 22. The core wire 22 may be, for example, a stranded wire made by twisting together a plurality of metal wires, or a braided member made by weaving a plurality of metal wires into a cylindrical shape. The core wire 22 in this embodiment is a stranded wire. The core wire 22 may be made of, for example, a copper-based or aluminum-based metal material.

[0021] The cross-sectional shape of the core wire 22 cut along a plane perpendicular to the longitudinal direction of the core wire 22, i.e., the transverse cross-sectional shape of the core wire 22, can be any shape. The transverse cross-sectional shape of the core wire 22 can be formed into, for example, a circular shape, a semicircular shape, a polygonal shape, a square shape, or a flat shape. The transverse cross-sectional shape of the core wire 22 in this embodiment is formed into a circular shape.

[0022] The insulating coating 23, for example, covers the outer circumferential surface of the core wire 22 over the entire circumferential direction. The insulating coating 23 is made of an insulating material such as a synthetic resin. Examples of the material for the insulating coating 23 that can be used include polyolefin resins such as cross-linked polyethylene and cross-linked polypropylene. The insulating coating 23 can be formed by extrusion molding (extrusion coating) of the core wire 22. The thickness of the insulating coating 23 can be, for example, 1.4 mm.

[0023] (Configuration of the second electric wire 24) The second electric wire 24 has, for example, a core wire 25 made of a single conductor and an insulating coating 26 covering the outer periphery of the core wire 25. The core wire 25 can be, for example, a columnar conductor made of a single columnar metal rod with a solid interior, or a tubular conductor with a hollow interior. The core wire 25 of this embodiment is a columnar conductor. The material of the core wire 25 can be, for example, a copper-based or aluminum-based metal material. The material of the core wire 25 can be, for example, the same material as the material of the core wire 22, or a material different from the material of the core wire 22. The core wire 25 is formed, for example, by extrusion molding. The cross-sectional shape of the core wire 25 can be any shape. The cross-sectional shape of the core wire 25 of this embodiment is circular.

[0024] The insulating coating 26 covers, for example, the outer circumferential surface of the core wire 25 over the entire circumferential direction. The insulating coating 26 is made of, for example, an insulating material such as synthetic resin. Examples of materials that can be used for the insulating coating 26 include polyolefin resins such as cross-linked polyethylene and cross-linked polypropylene. The insulating coating 26 can be formed, for example, by extrusion molding the core wire 25. Alternatively, examples of the insulating coating 26 can be a heat-shrinkable tube or a rubber tube. The thickness of the insulating coating 26 can be, for example, 1.1 mm.

[0025] (Configuration of connection part 27) At the connection portion 27, the core wire 22 and the core wire 25 are joined. More specifically, at the longitudinal end of the first electric wire 21, a certain length of the insulating coating 23 is stripped from the end of the first electric wire 21, exposing the end of the core wire 22. At the longitudinal end of the second electric wire 24, a certain length of the insulating coating 26 is stripped from the end of the second electric wire 24, exposing the end of the core wire 25. At the connection portion 27, the end of the core wire 22 exposed from the insulating coating 23 is joined to the end of the core wire 25 exposed from the insulating coating 26. For example, at the connection portion 27, the core wire 22 and the core wire 25 are joined by overlapping each other in the radial direction, that is, in a direction intersecting the longitudinal directions of the core wires 22 and 25. Note that the method for connecting the core wires 22 and 25 is not particularly limited. For example, ultrasonic welding, laser welding, or the like can be used as the method for connecting the core wires 22 and 25.

[0026] (Configuration of covering member 28) The covering member 28 is formed to cover the outer periphery of the connection portion 27. The covering member 28 is formed, for example, in a long, cylindrical shape. The covering member 28 is formed, for example, to cover the core wire 22 exposed from the insulating covering 23 and the core wire 25 exposed from the insulating covering 26. The covering member 28 is formed, for example, to bridge between the end of the insulating covering 23 and the end of the insulating covering 26. For example, one end of the covering member 28 covers the outer periphery of the end of the insulating covering 23, and the other end of the covering member 28 covers the outer periphery of the end of the insulating covering 26. The covering member 28 surrounds the outer periphery of the first electric wire 21 and the outer periphery of the second electric wire 24 over the entire circumferential direction. The covering member 28 has a function of maintaining electrical insulation between the connection portion 27 and the core wire 22 and core wire 25 exposed from the insulating coverings 23 and 26, for example. Further, the covering member 28 has a function of waterproofing the connection portion 27 and the core wires 22 and 25 exposed from the insulating coverings 23 and 26, for example.

[0027] The covering member 28 may be, for example, a heat shrink tube, a rubber tube, a resin mold, a hot melt adhesive, or a tape. In this embodiment, the covering member 28 is a heat shrink tube. The covering member 28 may be made of, for example, a synthetic resin containing, as its main component, a polyolefin resin such as cross-linked polyethylene or cross-linked polypropylene. The covering member 28 may have a thickness of, for example, 1.1 mm.

[0028] Here, the second electric wire 24 is provided, for example, inside the tubular member 30. The second electric wire 24 is provided, for example, inside the tubular member 30 over the entire length of the second electric wire 24 in the longitudinal direction. The connection portion 27 is provided, for example, inside the tubular member 30. The first electric wire 21 is provided, for example, such that an end portion in the longitudinal direction of the first electric wire 21 is provided inside the tubular member 30. The first electric wire 21 is drawn out from an end portion 31 of the tubular member 30 to the outside of the tubular member 30. Although not shown, a connection portion 27 is also provided inside the tubular member 30 at an end portion 32 of the tubular member 30 (see FIG. 1 ), where an end portion in the longitudinal direction of the first electric wire 21 is connected to an end portion in the longitudinal direction of the second electric wire 24. The first electric wire 21 is also drawn out from the end portion 32 of the tubular member 30 to the outside of the tubular member 30.

[0029] (Configuration of tubular member 30) The tubular member 30 of this embodiment is formed in a long cylindrical shape. The tubular member 30 is provided, for example, in the longitudinal middle portion of the wire harness 10. The tubular member 30 accommodates, for example, the longitudinal middle portion of the electric wire member 20 therein. The tubular member 30 surrounds, for example, the outer periphery of the electric wire member 20 over the entire circumferential direction. The tubular member 30 may be, for example, a metal pipe, a resin pipe, a resin corrugated tube, a rubber waterproof cover, or a combination thereof. The metal pipe may be made of, for example, an aluminum-based or copper-based metal material. The resin pipe or corrugated tube may be made of, for example, a conductive resin material or a non-conductive resin material. The resin material may be, for example, a synthetic resin such as polyolefin, polyamide, polyester, or ABS resin. The tubular member 30 of this embodiment is a metal pipe.

[0030] As shown in Fig. 1, the tubular member 30 is bent, for example, two-dimensionally or three-dimensionally. The tubular member 30 has a straight portion 33A extending linearly in the vehicle longitudinal direction at an end 31, a bent portion 34A provided at one end of the straight portion 33A, and a straight portion 33B extending downward in the vehicle vertical direction from the bent portion 34A. The tubular member 30 also has a bent portion 34B provided at one end of the straight portion 33B and a straight portion 33C extending rearward in the vehicle longitudinal direction from the bent portion 34B. The tubular member 30 further has a bent portion 34C provided at one end of the straight portion 33C and a straight portion 33D extending upward in the vehicle vertical direction from the bent portion 34C.

[0031] For example, the wire harness 10 is manufactured as follows. First, the straight electric wire members 20 are inserted into the straight tubular member 30. Then, with the electric wire members 20 inserted, the tubular member 30 is bent. As a result, bent portions 34A, 34B, and 34C are formed at multiple locations on the tubular member 30. At this time, the electric wire members 20 inserted into the tubular member 30 are also bent simultaneously with the bending of the tubular member 30. In addition, in the wire harness 10 of the present embodiment, the bending process starts from a location of the tubular member 30 closest to the end portion 31. The bending process is carried out at multiple locations on the tubular member 30 in order from a location close to the end portion 31 toward a location close to the end portion 32. That is, in the bending process of the tubular member 30, the bent portions 34A, 34B, and 34C are formed in this order. The bent portion 34A is provided at a position closest to the end portion 31 among the plurality of bent portions 34A, 34B, and 34C.

[0032] As shown in Fig. 2, straight portions 33A and 33B are connected to both sides of bent portion 34A. Bent portion 34A is bent, for example, at a right angle. For example, bent portion 34A is bent so that the direction in which the central axis of straight portion 33A extends is perpendicular to the direction in which the central axis of straight portion 33B extends. Bent portion 34A has an inner circumferential side 35. Wire member 20 housed inside bent portion 34A is bent along bent portion 34A.

[0033] The straight portion 33A is provided between the end face 31A and the bent portion 34A at the end portion 31 in the longitudinal direction of the tubular member 30. For example, the connection portion 27 of the electric wire member 20 is housed inside the straight portion 33A.

[0034] (Configuration of exterior member 41) As shown in FIG. 1 , the exterior member 41 has a long, cylindrical shape. The exterior member 41 is provided, for example, at both longitudinal ends of the wire harness 10. The exterior member 41 houses, for example, the longitudinal ends of the electric wire members 20, i.e., the ends of the electric wire members 20 drawn out from the tubular member 30. The exterior member 41, for example, surrounds the outer periphery of the electric wire members 20 over the entire circumferential direction. The exterior member 41, for example, surrounds the outer periphery of the first electric wire 21 over the entire circumferential direction of the electric wire member 20 in the longitudinal direction. The exterior member 41 can be, for example, a corrugated tube or a waterproof cover.

[0035] (Configuration of protective member 71) As shown in FIGS. 1 to 3, the wire harness 10 has a protective member 71. The protective member 71 is arranged to surround the outer peripheries of the two electric wire members 20. The protective member 71 is provided at a predetermined position in the longitudinal direction of the tubular member 30. The protective member 71 is provided at a location corresponding to the bent portions 34A to 34C of the tubular member 30. As shown in FIGS. 2 and 3, the protective member 71 is provided inside the bent portion 34A of the tubular member 30. The protective member 71 bundles the two electric wire members 20. In the present embodiment, the protective member 71 bundles the second electric wires 24 included in the electric wire member 20.

[0036] The protective member 71 contacts the inner circumferential side 35 of the bent portions 34A to 34C. The protective member 71 is made of an insulating material such as synthetic resin. The thermal expansion coefficient of the protective member 71 is equal to that of the insulating coating 26 of the second electric wire 24. When the insulating coating 26 and the protective member 71 are in contact with each other and do not deform due to thermal expansion or contraction, the "thermal expansion coefficients are equal." The protective member 71 can be made of a polyolefin resin such as cross-linked polyethylene or cross-linked polypropylene. The protective member 71 can also be made of a heat-shrinkable tube or a rubber tube. The thickness of the protective member 71 can be, for example, 1.0 mm.

[0037] (Configuration of fixing member 81) As shown in FIG. 2 , the wire harness 10 has a fixing member 81. The fixing member 81 bundles a plurality of electric wire members 20. In the present embodiment, the fixing member 81 bundles the first electric wires 21 of the electric wire members 20. The fixing member 81 is made of the same material as the protective member 71. Note that the fixing member 81 may be omitted. Alternatively, the first electric wires 21 may be bundled by the protective member 71 instead of the fixing member 81.

[0038] (Action and effect) As described above, according to this embodiment, the following advantageous effects are achieved. (1) The wire harness 10 includes an electric wire member 20 including a second electric wire 24 configured of a core wire 25 and an insulating coating 26 that covers the core wire 25, a protective member 71 that covers the periphery of the insulating coating 26, and a tubular member 30 through which the electric wire member 20 is inserted and which has bent portions 34A to 34C. The protective member 71 is provided on the second electric wire 24 of the electric wire member 20 at positions corresponding to the bent portions 34A to 34C.

[0039] 11 and 12 show a wire harness 10X of a comparative example. In the wire harness 10X of the comparative example, a plurality of electric wires 110 inserted into a tubular member 100 are bent together. Then, the electric wires 110 come into contact with the inner circumferential surface of the tubular member 100 at the bent inner side 102 of the bent portion 101 of the tubular member 100. In this state, the temperature of the underfloor of the vehicle 11 is transmitted through the tubular member 30 to the insulating coating 112 of the electric wires 110. When vibrations from the vehicle 11 are applied to the wire harness 10X with the electric wires 110 in contact with the tubular member 30, the insulating coating 112 that covers the core wires 111 of the electric wires 110 is likely to become thinner.

[0040] The protective members 71 of the wire harness 10 of this embodiment are provided at locations of the wire member 20 corresponding to the bent portions 34A to 34C. Therefore, the insulating coating 26 is less likely to come into contact with the inner circumferential sides 35 of the bent portions 34A to 34C of the tubular member 30. This makes it possible to prevent the insulating coating 26 from becoming thin. As a result, the wire member 20 (the second electric wires 24) can be protected. Furthermore, it is possible to prevent a decrease in the reliability of the wire harness 10.

[0041] (2) The thermal expansion coefficient of the protective member 71 is equal to the thermal expansion coefficient of the insulating coating 26. Due to temperature changes in the location where the wire harness 10 is disposed, the insulating coating 26 of the second electric wire 24 of the electric wire member 20 and the protective member 71 expand and contract. At this time, since the thermal expansion coefficients of the insulating coating 26 and the protective member 71 are the same, damage to the insulating coating 26 due to the difference in the thermal expansion coefficients between the protective member 71 and the insulating coating 26 can be suppressed.

[0042] (3) Two electric wire members 20 are inserted into the cylindrical member 30. The protective member 71 bundles the two electric wire members 20. Therefore, the two electric wire members 20 can be easily inserted into the cylindrical member 30.

[0043] (Other embodiments) The above embodiment can be modified as follows: The above embodiment and the following modifications can be combined with each other within the scope of technical compatibility.

[0044] The configuration of the wire harness 10 of the above embodiment may be modified as appropriate. As in a wire harness 10A of a first modified example shown in FIG. 4, a configuration may be provided in which a protective member 71 covers the insulating coating 26 of each of the second electric wires 24 of each electric wire member 20.

[0045] According to this configuration, the insulating coatings 26 of the second electric wires 24 of the plurality of electric wire members 20 can be individually protected by the protective member 71. Therefore, the difference in curvature between the inner electric wire and the outer electric wire at the bent portion 34A of the tubular member 30 can be absorbed.

[0046] As in a wire harness 10B of a second modified example shown in Figures 5 and 6, the insulating coating 26 of the second electric wire 24 of each electric wire member 20 may be integrated with the protective member 71. The dashed lines in Figures 5 and 6 indicate, for the sake of convenience, the boundary between the insulating coating 26 and the protective member 71. However, in reality, this boundary may disappear or may not be clear.

[0047] 7 , the protective member 72 may be disposed in correspondence with the bent portion 34A of the tubular member 30 and across the bent portion 34A. The protective member 72 disposed in this manner can prevent the insulating coating 26 of the second electric wire 24 of the electric wire member 20 from contacting the inner circumferential side 35 of the bent portion 34A of the tubular member 30.

[0048] A wire harness 10D of a fourth modified example shown in Figs. 8 to 10 connects electric devices M1 to M4 mounted on a vehicle 11. The electric device M3 is, for example, a relay box provided toward the front of the vehicle 11, and the electric device M4 is, for example, a low-voltage battery provided toward the rear of the vehicle 11. The wire harness 10D has an electric wire member 90 connecting the electric devices M3 and M4. The electric wire member 90 is, for example, a flexible electric wire. As shown in Figs. 9 and 10, a protective member 71 bundles two electric wire members 20 and two electric wire members 90. In the wire harness 10D configured in this manner, the electric wire members 20 and 90 can be protected by the protective member 71.

[0049] In the above embodiment, the protective member 71 may be provided on at least the electric wire members 20 (second electric wires 24) of the plurality of electric wire members 20 that are close to the inner circumferential side 35 of the bent portions 34A to 34C of the tubular member 30. In this case, the electric wires that are likely to come into contact with the tubular member 30 can be protected by the protective member. Also, the electric wire members 20 (second electric wires 24) can be protected by the minimum number of protective members required.

[0050] In the above embodiment, the protective member 71 is formed to cover the outer periphery of the insulating coating 26 of the second electric wire 24 of the electric wire member 20. However, it is only necessary that the insulating coating 26 is less likely to come into contact with the bent portions 34A to 34C of the tubular member 30. For example, the protective member 71 may be provided on the inner side of the bent second electric wire 24 (electric wire member 20) and the protective member 71 may be omitted on the outer side of the bent second electric wire 24. Furthermore, in the wire harness 10C of Modified Example 3 shown in FIG. 7 , the protective members 72 are provided at intervals in the longitudinal direction of the electric wire member 20 (second electric wire 24), but the protective members 72 may be provided at intervals in the circumferential direction of the second electric wire 24.

[0051] In the above embodiment, the electric wire member 20 is used in which the first electric wire 21 and the second electric wire 24 are connected. However, the entire electric wire member 20 may be made of the first electric wire 21. Alternatively, the entire electric wire member 20 may be made of the second electric wire 24. [Explanation of symbols]

[0052] 10, 10A~10D Wire harness 10x Wire Harness 11 vehicles 20 Electrical wiring components 21 First Electric Wire 22 core wire 23 Insulation coating 24 Second Electric Wire 25 core wire 26 Insulation coating 27 Connection 28 Covering material 30 Cylindrical member 31 End 31A End face 32 End 33A~33D Straight section 34A~34C Bending section 35 Inner side 41 Exterior materials 71 Protective materials 72 Protective materials 81 Fixing member 90 Electrical Wire Materials 100 Cylindrical member 101 Bending section 102 Inside of bend 110 Electric wire 111 Core wire 112 Insulation coating M1-M4 Electrical Equipment

Claims

1. an electric wire member including a core wire and an insulating coating covering the core wire; a protective member covering the periphery of the insulating coating; a cylindrical member through which the electric wire member is inserted and which has a bent portion; Equipped with the protective member is provided at a location of the wire member corresponding to the bent portion, The thermal expansion coefficient of the protective member is equal to the thermal expansion coefficient of the insulating coating. Wire harness.

2. the electric wire member is one of a plurality of electric wire members, The plurality of electric wire members are inserted into the cylindrical member, The protective member bundles the plurality of electric wire members. The wire harness according to claim 1 .

3. the electric wire member is one of a plurality of electric wire members, The plurality of electric wire members are inserted into the cylindrical member, The protective member covers the periphery of the insulating coating of at least one of the plurality of electric wire members that is closest to the bent portion. The wire harness according to claim 1 .

4. the electric wire member is one of a plurality of electric wire members, The plurality of electric wire members are inserted into the cylindrical member, The protective member covers the insulating coating of each of the plurality of electric wire members. The wire harness according to claim 1 .

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