Wire harness and wire harness arrangement structure

Abstract

To make a wire harness for connecting a vehicle body side device with a wheel side device suitable for arrangement in a narrow space and enable improvement of bending resistance of the wire harness.SOLUTION: A wire harness connects a vehicle body side device with a wheel side device and includes a first wiring member and a second wiring member having higher bending resistance than that of the first wiring member. An external path length of the first wiring member is longer than an external path length of the second wiring member.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a wire harness and a wiring structure of the wire harness. [Background technology]

[0002] Patent Document 1 discloses a composite cable in which a cable for an electric brake and a cable for an ABS sensor are integrated by being covered with a common outer sheath. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-237428 Summary of the Invention [Problem to be solved by the invention]

[0004] It is desired that a wire harness connecting a vehicle body side device and a wheel side device be made more suitable for routing in a narrow space and that its bending resistance be further improved.

[0005] Therefore, an object of the present disclosure is to provide a wire harness that connects a vehicle body side device and a wheel side device, which is suitable for routing in a narrow space and has improved bending resistance. [Means for solving the problem]

[0006] The wire harness of the present disclosure is a wire harness that connects a vehicle body side device and a wheel side device, and includes a first wiring member and a second wiring member that has better bending resistance than the first wiring member, and the external path length of the first wiring member is longer than the external path length of the second wiring member.

[0007] In addition, the wiring structure of the wire harness disclosed herein is a wiring structure of a wire harness that connects vehicle body side equipment and wheel side equipment, and the wire harness includes a first wiring member and a second wiring member that has better bending resistance than the first wiring member, and the first wiring member and the second wiring member are arranged so that the external path length of the first wiring member that passes outside the vehicle body to the wheel side equipment is longer than the external path length of the second wiring member that passes outside the vehicle body to the wheel side equipment. [Effects of the Invention]

[0008] According to the present disclosure, a wire harness connecting a vehicle body side device and a wheel side device can be made suitable for routing in a narrow space and can have improved bending resistance. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic side view showing a wiring structure of a wire harness according to an embodiment. [Figure 2] FIG. 2 is a schematic diagram showing a wire harness. [Figure 3] FIG. 3 is a cross-sectional view taken along line III-III in FIG. [Figure 4] FIG. 4 is an explanatory diagram showing the change in the bending of the external path portion. [Figure 5] FIG. 5 is a schematic side view showing a wiring structure of a wire harness according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0010] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described.

[0011] The wire harness of the present disclosure is as follows.

[0012] (1) A wire harness connecting a vehicle body device and a wheel device includes a first wiring member and a second wiring member having greater flexibility than the first wiring member, and the first wiring member has an external path length longer than the second wiring member. With this wire harness, the first wiring member can be easily routed along a detour path that avoids paths that are prone to bending, since the external path length of the first wiring member is longer than the external path length of the second wiring member. Since the second wiring member has greater flexibility than the first wiring member, the second wiring member may be routed along another short-distance path that is more prone to bending than the path of the first wiring member. Therefore, the entire wire harness can be made suitable for routing in narrow spaces and has improved flexibility.

[0013] (2) In the wire harness of (1), the first wiring member may include a power line, and the second wiring member may include a signal line. The first wiring member including the power line can be easily routed along a path that avoids paths that are prone to bending. The second wiring member including the signal line can be routed along a short path.

[0014] (3) In the wire harness of (1) or (2), the electric wires included in the first wiring member may be thicker than the electric wires included in the second wiring member. The first wiring member including electric wires thicker than the electric wires included in the second wiring member can be easily routed along a path that avoids a path that is prone to bending. The second wiring member including electric wires thinner than the electric wires included in the first wiring member can be routed along a short path.

[0015] (4) In the wire harness of any one of (1) to (3), at least one end of the first wiring member and the second wiring member may be connected to a common connector, and an external path portion of the first wiring member and an external path portion of the second wiring member may be separated so as to be able to be arranged along separate paths outside the vehicle body. The first wiring member and the second wiring member connected to the common connector may be arranged outside the vehicle body along separate paths according to their respective bending resistances.

[0016] (5) In the wire harness of any one of (1) to (4), a bracket that can be attached to an arm that supports a wheel so that the wheel can move up and down may be attached to the first wiring member. The first wiring member can be supported along the arm. Therefore, the first wiring member can be easily routed along a path that avoids paths that are prone to bending.

[0017] (6) In the wire harness of (5), the bracket may be attached to the arm at a position closer to the rotation axis on the vehicle body side. The first wiring member can be attached to the arm at a position closer to the rotation axis on the vehicle body side via the bracket. Therefore, the first wiring member can be arranged along a path that avoids a path that is more prone to bending.

[0018] The wiring structure of the wire harness of the present disclosure is as follows.

[0019] (7) A wiring structure for a wire harness connecting a vehicle body side device and a wheel side device, the wire harness including a first wiring member and a second wiring member having greater bending resistance than the first wiring member, the first wiring member and the second wiring member being arranged such that an external path length of the first wiring member extending outside the vehicle body to the wheel side device is longer than an external path length of the second wiring member extending outside the vehicle body to the wheel side device. Because the first wiring member is longer than the second wiring member, it can be easily arranged along a detour path that avoids paths that are prone to bending. Because the second wiring member has greater bending resistance than the first wiring member, it can be arranged along another short path that is more prone to bending than the path of the first wiring member. This makes the entire wire harness suitable for routing in narrow spaces and improves bending resistance.

[0020] (8) In the wiring structure of the wire harness of (7), one end of the first wiring member and one end of the second wiring member may be connected to a common connector, and the first wiring member and the second wiring member may be routed along separate paths outside the vehicle body. The first wiring member and the second wiring member connected to the common connector may be routed along separate paths outside the vehicle body according to their respective bending resistances.

[0021] (9) In the wiring structure of the wire harness according to (7) or (8), the first wiring member may be routed along at least a part of an arm that supports the wheel so that the wheel can move in the up-down direction. The first wiring member is routed along the arm. This allows the first wiring member to be easily routed along a detour route that avoids routes that are prone to bending.

[0022] (10) In the wiring structure of the wire harness of (9), the first wiring member may be routed through a position of the arm closer to the rotation axis of the vehicle body. The first wiring member is easily routed along a path that avoids paths that are more prone to bending.

[0023] [Details of the embodiments of the present disclosure] Specific examples of the wire harness and the wiring structure of the wire harness according to the present disclosure will be described below with reference to the drawings. Note that the present disclosure 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.

[0024] [Embodiment] Hereinafter, a wire harness and a wiring structure of the wire harness according to an embodiment will be described. Fig. 1 is a schematic side view showing a wiring structure 30 of a wire harness 40. Fig. 2 is a schematic view showing the wire harness 40. Fig. 3 is a cross-sectional view taken along line III-III in Fig. 2.

[0025] The wire harness 40 is a wiring member that connects the vehicle body side device 18 and the wheel side device 28. The wire harness 40 is attached to the vehicle body 10 in a state where it is routed along a path that connects the vehicle body side device 18 and the wheel side device 28.

[0026] Vehicle body 10 is the body of an automobile. FIG. 1 illustrates the portion of vehicle body 10 around wheels 20. Vehicle body 10 includes a floor portion 12 and a body portion 14. Floor portion 12 is the portion that faces the ground. Body portion 14 is provided above floor portion 12 and forms the exterior of vehicle body 10. Vehicle body 10 may be a monocoque body in which a body is integrated with a rigid frame, or may be configured with the body mounted on a frame. In the following description, the direction in which an automobile normally travels may be referred to as the front, and the opposite side may be referred to as the rear.

[0027] A wheel 20 is rotatably supported on the vehicle body 10. In the example shown in FIG. 1 , the wheel 20 is rotatably supported within the fender apron 16. The suspension device may support the wheel 20 using any suspension system, such as an axle suspension system, an independent suspension system, or a torsion beam suspension system. In the example shown in FIG. 1 , an arm 32 supports the wheel 20. More specifically, the arm 32 is provided to extend in the fore-and-aft direction of the vehicle body 10. Here, a base end of the arm 32 extends forward relative to the wheel 20. The base end of the arm 32 is swingably supported by the vehicle body support part 13. An axis X about which the base end of the arm 32 swings is a rotation axis X on the vehicle body 10 side when the arm 32 swings. In this embodiment, the rotation axis X is aligned with the left-right direction of the vehicle body 10. The base end of the arm may be swingably supported on the floor part at a position diagonally forward, inward, diagonally rearward, rearward, or the like relative to the wheel. In these cases, the rotation axis on the vehicle body side when the arm swings may be along the left-right direction of the vehicle body, along the front-to-back direction, or along an oblique direction relative to both the left-to-right and front-to-back directions.

[0028] The tip of the arm 32 extends from the vehicle body support part 13 toward the inside of the fender apron 16 (toward the rear in this case). A bearing part 34 is provided at the tip of the arm 32. The wheel 20 is rotatably supported within the fender apron 16 by this bearing part 34. A spring 35 and a damper 36 are provided between the tip of the arm 32 or the bearing part 34 and the vehicle body 10.

[0029] As described above, the base end of the arm 32 is supported by the vehicle body support part 13 so as to be able to swing, and therefore the arm 32 supports the wheel 20 so as to be able to move up and down within the fender apron 16. With the direction of movement of the wheel 20 restricted by the arm 32, the spring 35 and the damper 36 are interposed between the tip end of the arm 32 and the vehicle body 10. The spring 35 and the damper 36 absorb shocks caused by unevenness in the road surface while driving.

[0030] A vehicle-body-side device 18 is provided on the vehicle body 10 side, and a wheel-side device 28 is provided on the wheel 20 side. The wheel-side device 28 is incorporated into the wheel 20 and moves up and down together with the wheel 20 relative to the vehicle body 10. The wheel-side device 28 is assumed to be a sensor, an electric brake, a traction motor, or the like. The sensor is, for example, a sensor that detects the rotational speed of the wheel. The electric brake includes a motor and the like and is a brake that uses electricity to brake the rotation of the wheel 20. The electric brake may be an electric parking brake used when parking or stopping the vehicle, or a brake used when driving the vehicle. The traction motor is a motor incorporated into the wheel 20 and rotates the wheel 20, and is a so-called in-wheel motor. The vehicle-body-side device 18 is a device that transmits and receives signals to and receives power from the wheel-side device 28. For example, the vehicle-body-side device 18 is an ECU (Electronic Control Unit) that receives signals from a sensor and controls the electric brake or the traction motor. The vehicle body side device 18 may be provided inside the vehicle body 10 or outside the vehicle body 10 .

[0031] In this embodiment, a case is illustrated in which a vehicle-body side device 18 is provided inside the vehicle body 10, and two wheel-side devices 28, 28 are provided on the wheel 20. A plurality of vehicle-body side devices 18 may be provided on the vehicle body side. One or three or more wheel-side devices may be provided on the wheel side. Also, in this embodiment, a case is shown in which one end of a wire harness 40 is connected to the vehicle-body side device 18, and the other end is connected to the wheel-side devices 28, 28. One end of the wire harness 40 may be connected to a vehicle-body side device via another wire harness.

[0032] The wire harness 40 includes a first wiring member 50 and a second wiring member 60. The second wiring member 60 has better bending resistance than the first wiring member 50. Here, the superiority or inferiority of bending resistance can be evaluated based on the state of breakage of the core wire when the wiring member is repeatedly bent. For example, a left-right bending test may be performed on the wiring member to be evaluated, in which the wiring member is bent 90 degrees along an arc on the outer circumferential surface of a cylinder, then returned to a straight state, and then bent 90 degrees along a similar arc in the opposite direction, and then returned to a straight state, repeatedly. In this case, the superiority or inferiority of bending resistance may be evaluated based on the number of times it takes for the core wire of the wiring member to break (in the case of multiple core wires, the number of times it takes for any of the core wires to break).

[0033] The external path length L1 of the first wiring member 50 is longer than the external path length L2 of the second wiring member 60. Here, the portions of the wiring members 50, 60 that pass outside the vehicle body 10 are referred to as external path portions 50a, 60a, and the lengths of the external path portions 50a, 60a are referred to as external path lengths L1, L2. The external path portions 50a, 60a of the wiring members 50, 60 are portions where bending deformation may occur between the vehicle body 10 and the wheel 20 due to displacement of the wheel 20 relative to the vehicle body 10. Depending on the path of the wiring members 50, 60 in the automobile, the entire wiring members 50, 60 may be the external path portion, or only a portion of the wiring members 50, 60 may be the external path portion. In this embodiment, the vehicle-body side device 18 is provided inside the vehicle body 10, and the wiring members 50, 60 are guided from inside the vehicle body 10 to outside the vehicle body 10 and to the wheel 20. Therefore, a portion of the wiring members 50, 60 is the external path portion 50a, 60a.

[0034] More specifically, the second wiring member 60 is drawn outward through a hole 16h formed in the fender apron 16. The hole 16h may be formed in a portion of the fender apron 16 radially outward from the wheel 20, or may be formed in a portion of the fender apron 16 inward in the vehicle width direction from the wheel 20. The first wiring member 50 is drawn outward through a hole 12h formed in the floor portion 12 of the vehicle body 10. The hole 12h is formed in a portion of the floor portion 12 around the vehicle body support portion 13. The hole 12h may be formed in a portion of the floor portion 12 between the wheel 20 and the vehicle body support portion 13, or may be formed in another portion.

[0035] Grommets 51, 61 are provided midway along the longitudinal direction of the wiring members 50, 60. The grommets 51, 61 are annular members made of an elastic material such as rubber, and are fitted onto the exterior of the wiring members 50, 60. An annular groove into which the edges of the holes 12h, 16h fit may be formed on the outer periphery of the grommets 51, 61. The grommets 51, 61 are interposed between the wiring members 50, 60 and holes or gaps formed in the vehicle body 10, and can protect the wiring members 50, 60 and prevent water from entering.

[0036] In this embodiment, the portion of the first wiring member 50 extending from the grommet 51 to the end connected to the wheel-side device 28 is the external path portion 50a. The portion of the second wiring member 60 extending from the grommet 61 to the end connected to the wheel-side device 28 is the external path portion 60a. The external path length L1 of the external path portion 50a is longer than the external path length L2 of the external path portion 60a. The external path portions of the wiring members 50, 60 do not necessarily need to be distinguished based on the grommet, and may be distinguished, for example, based on a bracket for attaching the wiring members 50, 60 to the vehicle body, the state of attachment to the vehicle body 10, etc.

[0037] The external path portion 50a and the external path portion 60a may be separated so as to be able to be arranged along different paths outside the vehicle body 10. The first wiring member 50 and the second wiring member 60 may be bundled together inside the vehicle body 10.

[0038] In this embodiment, the overall length of the first wiring member 50 is longer than the overall length of the second wiring member 60. However, if the lengths of the wiring members 50, 60 within the vehicle body 10 are different, the overall lengths of the first wiring member 50 and the second wiring member 60 may be the same or the relationship between them may be reversed.

[0039] The first wiring member 50 includes first electric wires 52, 52. The first electric wires 52, 52 are, for example, power lines. For example, if the first wiring member 50 is connected to an electric brake, the first electric wire 52 may be a power line that supplies power to drive the electric brake. For example, if the first wiring member 50 is connected to a traction motor, the first electric wires 52, 52 may be a power line that supplies power to drive the traction motor. The first wiring member 50 may include only a power line.

[0040] The second wiring member 60 includes second electric wires 62, 62. The second electric wires 62, 62 are, for example, signal wires. For example, when the second wiring member 60 is connected to a sensor, the second electric wires 62, 62 may be signal wires that output detection signals from the sensor. The second electric wires 62, 62 may also be signal wires that transmit control signals. The second wiring member 60 may include only signal wires.

[0041] Furthermore, the first electric wires 52, 52 included in the first wiring member 50 may be thicker than the second electric wires 62, 62 included in the second wiring member 60. In this case, the conductor cross-sectional area of ​​the first electric wires 52, 52 can be made larger than the conductor cross-sectional area of ​​the second electric wires 62, 62 depending on the thickness of the electric wires. Therefore, as described above, the first electric wires 52, 52 are suitable for use as power lines and the second electric wires 62, 62 are suitable for use as signal lines.

[0042] The first wiring member 50 may include first electric wires 52, 52 of different thicknesses. The second wiring member 60 may include second electric wires 62, 62 of different thicknesses. In this case, the thinnest electric wire among the first electric wires 52, 52 included in the first wiring member 50 may be thicker than the thickest electric wire among the second electric wires 62, 62 included in the second wiring member 60. The thickness may be evaluated based on the cross-sectional area (the area of ​​the cross section in a plane perpendicular to the axis) including the core wire and the coating.

[0043] The first electric wires 52, 52 included in the first wiring member 50 include a core wire 52a and a coating 52b. The core wire 52a is made of copper, a copper alloy, aluminum, an aluminum alloy, or the like. The core wire 52a may be an assembly of multiple wires (usually twisted together), or may be made of a single wire. The coating 52b is formed around the core wire 52a by extrusion coating with resin, or the like.

[0044] No exterior member such as a sheath is provided around the first electric wires 52, 52. However, an exterior member such as a sheath, a spirally wound adhesive tape, a corrugated tube, or a rubber tube may be provided around the first electric wires 52, 52.

[0045] The first electric wires 52, 52 may be bundled together in a partial area or over the entire area in the longitudinal direction. For example, the first electric wires 52, 52 are bundled together by being inserted into the grommet 51. The bracket 58, which will be described next, also serves to bundle the first electric wires 52, 52. A bracket provided at a location other than the bracket 58 may also keep the first electric wires 52, 52 bundled together.

[0046] A bracket 58 is provided at a longitudinal intermediate portion of the first wiring member 50. The bracket 58 is formed by pressing a metal plate or the like. The bracket 58 includes an electric wire attachment portion 58a and an arm-side attachment portion 58b. The electric wire attachment portion 58a is attached to the first electric wires 52, 52. Here, the electric wire attachment portion 58a is attached to the first electric wires 52, 52 by being plastically deformed so as to surround the first electric wires 52, 52. The arm-side attachment portion 58b is attached to the arm 32. Here, the arm-side attachment portion 58b has a screw hole 58bh, and a screw protruding from the arm 32 is inserted into the screw hole 58bh, and a nut is screwed onto the screw, thereby attaching the arm-side attachment portion 58b to the arm 32. The bracket 58 may be attached to the first wiring member 50 by a screw-tightening structure or the like. The bracket 58 may be attached to the arm 32 by welding, a fitting arrangement, or the like.

[0047] The bracket 58 may be attached to a position of the arm 32 closer to the rotation axis X on the vehicle body 10 side. A position of the arm 32 closer to the rotation axis X on the vehicle body 10 side refers to a position closer to the rotation axis X than the center of the arm 32 in the longitudinal direction. When the arm 32 is divided into four equal parts along the longitudinal direction, the bracket 58 may be provided in the quartered region of the arm 32 that is closest to the rotation axis X. The bracket 58 may be attached to the arm 32 at the same position as the rotation axis X in the longitudinal direction. By attaching the bracket 58 to a position of the arm 32 closer to the rotation axis X, the first wiring member 50 is routed along at least a portion of the arm 32 via the position of the arm 32 closer to the rotation axis X.

[0048] The second electric wires 62, 62 included in the second wiring member 60 include a core wire 62a and a coating 62b. The core wire 62a has a configuration similar to that of the core wire 52a, and the coating 62b has a configuration similar to that of the coating 52b. Here, as described above, the first electric wires 52, 52 are thicker than the second electric wires 62, 62.

[0049] A sheath 63 is formed around the second electric wires 62, 62. The sheath 63 is a resin that covers the second electric wires 62, 62. The sheath 63 is formed around the second electric wires 62, 62 by extrusion coating the resin or the like.

[0050] It should be noted that it is not essential for the second wiring member 60 to include a plurality of second electric wires 62, 62. It is not essential for the second electric wires 62, 62 to be covered by the sheath 63. The second electric wires 62, 62 may be covered by a spirally wound adhesive tape, a corrugated tube, a rubber tube, or the like. In the extending direction of the second wiring member 60, there may be a portion where the second electric wires 62, 62 are not bundled.

[0051] One end of the first wiring member 50 and one end of the second wiring member 60 are connected to a common connector 70. The connector 70 has a connector housing made of resin or the like. Terminals at the ends of the first electric wires 52, 52 and terminals at the ends of the second electric wires 62, 62 are inserted into cavities formed in the connector housing. When the connector 70 is connected to the vehicle body side device 18, the vehicle body side device 18 is connected to the first wiring member 50 and the second wiring member 60.

[0052] One end of the first wiring member and one end of the second wiring member may be connected to separate connectors, or at least one of the one end of the first wiring member and one end of the second wiring member may be directly connected to an electrical component in the vehicle body device without being connected via a connector.

[0053] The other end of the first wiring member 50 is connected to a connector 72, and the other end of the second wiring member 60 is connected to a connector 74 separate from the connector 72. Like the connector 70, the connectors 72, 74 have connector housings made of resin or the like, and terminals at the ends of the first electric wires 52, 52 or the second electric wires 62, 62 are inserted into the connector housings. When the connectors 72, 74 are connected to the wheel-side devices 28, 28, the first wiring member 50 and the second wiring member 60 are separately connected to the wheel-side devices 28, 28.

[0054] The other end of the first wiring member 50 and the other end of the second wiring member 60 may be connected to a common connector. At least one of the other end of the first wiring member and the other end of the second wiring member may be directly connected to an electrical component in the wheel-side device without being connected via a connector.

[0055] The wire harness 40 is routed between the vehicle body 10 and the wheels 20 of the automobile as follows. That is, a vehicle-body side device 18 is provided inside the vehicle body 10. In FIG. 1, the vehicle-body side device 18 is located midway between the holes 12h and 16h. A connector 70 is connected to the vehicle-body side device 18. A first wiring member 50 extending from the connector 70 is directed toward the hole 12h in the floor portion 12 and is drawn out of the vehicle body 10 through the hole 12h. Here, a grommet 51 attached to the first wiring member 50 is fitted into the hole 12h. An external path portion 50a of the first wiring member 50 extends from near the rotation axis X of the arm 32 along the arm 32 toward the tip of the arm 32. Then, a connector 72 is connected to the wheel-side device 28. The external path portion 50a is attached to the arm 32 so as to be routed along the arm 32. Here, the external path portion 50a is attached to a portion of the arm 32 closer to the rotation axis X by a bracket 58. The second wiring member 60 extending from the connector 70 faces the hole 16h in the fender apron 16, passes through the hole 16h, and is drawn out to the outside of the vehicle body 10. Here, a grommet 61 attached to the second wiring member 60 is fitted into the hole 16h. The external path portion 60a of the second wiring member 60 extends downward from the hole 16h to reach the inside of the wheel 20. Then, the connector 74 is connected to the wheel-side device 28. The external path portion 60a is routed so as to span between the hole 16h and the wheel-side device 28 (connector 74).

[0056] 4 is an explanatory diagram showing the change in the curvature of the external path portions 50a, 60a when the wheel 20 is displaced up and down. In FIG. 4, the wheel 20 shown by the solid line is located at a height H higher than the wheel 20 shown by the two-dot chain line.

[0057] First, focusing on the second wiring member 60, the hole 16h is located above the connector 74, and therefore the distance between the hole 16h and the connector 74 is likely to fluctuate as the wheel 20 moves up and down. When the wheel 20 is in an upward position, the distance between the hole 16h and the connector 74 is small. Therefore, the external path portion 60a is bent at a steep angle between the hole 16h and the connector 74. On the other hand, when the wheel 20 is in a downward position, the distance between the hole 16h and the connector 74 is large. Therefore, the external path portion 60a is straight or bent at a gentle angle between the hole 16h and the connector 74.

[0058] Focus on the first wiring member 50. In this case, the hole 12h is located away from the connector 72 in a direction intersecting the connector 72, so that the distance between the hole 12h and the connector 72 is unlikely to change due to vertical movement of the wheel 20. Bending deformation of the first wiring member 50 can occur due to a change in the relative position between the hole 12h and a portion of the arm 32 that supports the first wiring member 50 (here, the portion to which the bracket 58 is attached). The positional fluctuation of the arm 32 with respect to the vehicle body 10 becomes smaller from the tip end of the arm 32 (i.e., the wheel 20) to the base end of the arm 32. Therefore, the degree of bending deformation of the first wiring member 50 caused by vertical displacement of the wheel 20 is smaller than the degree of bending deformation of the second wiring member 60. Here, the first wiring member 50 is only subject to repeated bending deformation within the range in which the arm 32 swings around the rotation axis X.

[0059] Therefore, the second wiring member 60, which has excellent bending resistance, can be routed so that the external path length L2 is shorter than the external path length L1, and the first wiring member 50 can be routed so that the external path length L1 is longer than the external path length L2, bypassing the path that is easily bent and along the path that is less likely to bend.

[0060] According to the wire harness 40 and the wiring structure 30 of the wire harness 40 configured in this manner, the external path length L1 of the first wiring member 50 is longer than the external path length L2 of the second wiring member 60, and therefore the first wiring member 50 can be easily routed along a path that avoids paths that are prone to bending. Furthermore, the second wiring member 60 has better bending resistance than the first wiring member 50, and therefore may be routed along a path that is more prone to bending than the path of the first wiring member 50. In this way, by routing the first wiring member 50 and the second wiring member 60 along different paths according to their respective bending resistances, the bending resistance of the entire wire harness 40 can be improved.

[0061] Furthermore, when the first wiring member 50 and the second wiring member 60 are routed along the same path, the first wiring member 50 and the second wiring member 60 are routed together in a large space. In this embodiment, the first wiring member 50 and the second wiring member 60 are routed along separate paths, so the routing space for each of the first wiring member 50 and the second wiring member 60 can be made small. This makes it suitable for routing in a narrow space.

[0062] Furthermore, if the first electric wires 52, 52 included in the first wiring member 50 are power wires and the second electric wires 62, 62 included in the second wiring member 60 are signal wires, it is easy to route the power wires, which are difficult to bend, along a path that avoids paths that are easy to bend. Also, it is easy to route the signal wires, which are easy to bend, along paths that are easy to bend, separately from the power wires. Furthermore, because the power wires and the signal wires are routed separately, it is also possible to suppress the influence of noise between them.

[0063] Furthermore, the first wiring member 50 including the first electric wires 52, 52 that are thicker than the second electric wires 62, 62 included in the second wiring member 60 can be easily routed along a path that avoids paths that are prone to bending. Furthermore, the second wiring member 60 including the second electric wires 62, 62 that are thinner than the first electric wires 52, 52 included in the first wiring member 50 can be routed along a short path.

[0064] Furthermore, when at least one end of the first wiring member 50 and the second wiring member 60 is connected to a common connector 70, the first wiring member 50 and the second wiring member 60 can be routed along separate paths according to their respective bending resistance, etc.

[0065] Furthermore, if the first wiring member 50 is supported along the arm 32 by the bracket 58, the first wiring member 50 can be easily disposed along a path that avoids a path that is prone to bending.

[0066] Furthermore, if the bracket 58 is provided closer to the rotation axis X, the first wiring member 50 will pass through a position on the arm 32 closer to the rotation axis X, and the first wiring member 50 can be routed along a path that avoids paths that are more prone to bending.

[0067] It should be noted that the suspension device that supports the wheel 20 on the vehicle body 10 is not limited to the above example. For example, as shown in Fig. 5, the base end of an arm 132 corresponding to the arm 32 may extend inward in the vehicle width direction relative to the wheel 20. The base end of the arm 132 is supported by a vehicle body support part 113 provided on the floor part 12 at a position inward in the vehicle width direction relative to the wheel 20 so as to be able to swing. In this case, an axis X about which the base end of the arm 132 swings is aligned with the fore-and-aft direction of the vehicle body 10.

[0068] In this case, similarly to the above embodiment, the bracket 58 of the first wiring member 50 is fixed to the arm 132, and at least a portion of the external path portion 50a of the first wiring member 50 is routed along the arm 132.

[0069] This modification also provides the same effects as those of the above embodiment.

[0070] The configurations described in the above embodiment and modifications can be combined as appropriate as long as they are not mutually inconsistent. [Explanation of symbols]

[0071] 10. Body 12th floor 12h hole 13 Body side support 14 Body part 16 Fender apron 16h hole 18 Vehicle body equipment 20 wheels 28 Wheel side equipment 30 Wire harness routing structure 32 Arm 34 Bearing section 35 spring 36 Damper 40 Wire harness 50 First wiring member 50a External pathway section 51 Grommet 52 First Electric Wire 52a core wire 52b Covering 58 Bracket 58a Wire attachment part 58b Arm side mounting part 58bh screw hole 60 Second wiring member 60a External pathway section 61 Grommet 62 Second Electric Wire 62a core wire 62b Covering 63 Sheath 70 Connector 72 connectors 74 Connector 113 Body side support 132 Arm H Height L1 External path length L2 External path length X rotation axis

Claims

1. A wire harness that connects a vehicle body device and a wheel device, a first wiring member; a second wiring member having better bending resistance than the first wiring member; Equipped with A wire harness, wherein an external path length of the first wiring member is longer than an external path length of the second wiring member.

2. The wire harness according to claim 1, the first wiring member includes a power supply line, The second wiring member includes a signal line.

3. The wire harness according to claim 1 or 2, The wire harness, wherein the electric wires included in the first wiring member are thicker than the electric wires included in the second wiring member.

4. The wire harness according to any one of claims 1 to 3, At least one end of the first wiring member and the second wiring member is connected to a common connector, an external path portion of the first wiring member and an external path portion of the second wiring member are separated so as to be able to be arranged along separate paths outside a vehicle body;

5. The wire harness according to any one of claims 1 to 4, A bracket that can be attached to an arm that supports a wheel so that the wheel can move up and down is attached to the first wiring member.

6. The wire harness according to claim 5, The bracket is attached to the arm at a position closer to the rotation axis on the vehicle body side.

7. A wiring structure of a wire harness that connects a vehicle body side device and a wheel side device, The wire harness includes a first wiring member and a second wiring member having better bending resistance than the first wiring member, A wiring structure of a wire harness, in which the first wiring member and the second wiring member are arranged so that an external path length of the first wiring member that passes through the outside of the vehicle body to reach the wheel-side device is longer than an external path length of the second wiring member that passes through the outside of the vehicle body to reach the wheel-side device.

8. The wiring structure of the wire harness according to claim 7, one end of the first wiring member and one end of the second wiring member are connected to a common connector; The first wiring member and the second wiring member are routed along different paths outside a vehicle body.

9. The wiring structure of the wire harness according to claim 7 or 8, The first wiring member is routed along at least a portion of an arm that supports a wheel so that the wheel can move in the up and down direction.

10. The wiring structure of the wire harness according to claim 9, The first wiring member passes through a position of the arm closer to the rotation axis of the vehicle body.

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