Wire harness

Abstract

To provide a wire harness that connects a vehicle body-side instrument to a wheel-side instrument, which can be suitably arranged in a narrow space and can be improved in flex resistance.SOLUTION: A wire harness, which connects a vehicle body-side instrument to a wheel-side instrument, comprises a first wiring member and a second wiring member that is more excellent in flex resistance than the first wiring member, where a length of an external path of the first wiring member is longer than a length of an external path 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 Art

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

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a wire harness that connects a vehicle body side device and a wheel side device, it is desired to be more suitable for wiring in a narrow space and to further improve the bending resistance.

[0005] Therefore, an object of the present disclosure is to be able to be suitable for wiring in a narrow space and to improve the bending resistance in a wire harness that connects a vehicle body side device and a wheel side device.

Means for Solving the Problems

[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 having better bending resistance than the first wiring member, and an external path length of the first wiring member is longer than an external path length of the second wiring member.

[0007] Moreover, the wiring structure of the wire harness of the present disclosure is 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 that is more excellent in bending resistance than the first wiring member, and an external path length of the first wiring member that reaches the wheel side device via the outside of the vehicle body is longer than an external path length of the second wiring member that reaches the wheel side device via the outside of the vehicle body, and the first wiring member and the second wiring member are wired. It is a wiring structure of a wire harness.

Effect of the Invention

[0008] According to the present disclosure, in a wire harness that connects a vehicle body side device and a wheel side device, it can be adapted to wiring in a narrow space and can improve bending resistance.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Mode for Carrying Out the Invention

[0010] [Description of Embodiment 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 that connects a vehicle body side device and a wheel side device, comprising a first wiring member and a second wiring member having better bending resistance than the first wiring member, wherein the external path length of the first wiring member is longer than the external path length of the second wiring member. According to this wire harness, since the external path length of the first wiring member is longer than the external path length of the second wiring member, the first wiring member can be easily routed along a detour path that avoids an easily bendable path. Since the second wiring member has better bending resistance than the first wiring member, it may be routed along another short-distance path that is more easily bendable than the routing path of the first wiring member. Therefore, as a whole wire harness, it can be made suitable for routing in a narrow space and the bending resistance is improved.

[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 an easily bendable path. 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 wire included in the first wiring member may be thicker than the electric wire included in the second wiring member. It is easy to route the first wiring member including an electric wire thicker than the electric wire included in the second wiring member along a path that avoids an easily bendable path. The second wiring member including an electric wire thinner than the electric wire included in the first wiring member can be routed along a short path.

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

[0016] (5) In any one of the wire harnesses (1) to (4), a bracket attachable to an arm that supports the wheel so as to be movable in the vertical direction 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 an easily bendable path.

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

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

[0019] (7) A wiring structure of a wire harness that connects a vehicle body side device and a wheel side device, the wire harness including a first wiring member and a second wiring member having better bend resistance than the first wiring member, and the external path length of the first wiring member that reaches the wheel side device via the outside of the vehicle body is longer than the external path length of the second wiring member that reaches the wheel side device via the outside of the vehicle body, and the first wiring member and the second wiring member are routed. Since the first wiring member is longer than the second wiring member, it can be easily routed along a detour path that avoids an easily bendable path. Since the second wiring member has better bend resistance than the first wiring member, it can be routed along another short-distance path that is more easily bendable than the routing path of the first wiring member. Therefore, as a whole wire harness, it can be made suitable for routing in a narrow space and the bend resistance is improved.

[0020] (8) In the wiring harness routing structure of (7), one end of the first wiring member and one end of the second wiring member are 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 arranged along separate paths corresponding to their respective flexural resistances outside the vehicle body.

[0021] (9) In the wiring harness routing structure of (7) or (8), the first wiring member may be routed along at least a part of an arm that supports a wheel so as to be movable in the vertical direction. The first wiring member is routed along the arm. Therefore, the first wiring member can be easily routed along a detour path that avoids an easily bendable path.

[0022] (10) In the wiring harness routing structure of (9), the first wiring member may pass through a position closer to the rotation axis on the vehicle body side of the arm. The first wiring member is easily routed along a path that avoids a more easily bendable path.

[0023] [Details of Embodiments of the Present Disclosure] Specific examples of the wire harness and the wire harness routing structure of the present disclosure will be described below with reference to the drawings. Note that the present disclosure is not limited to these examples, and is intended to be represented by the claims and to include all modifications within the meaning and scope equivalent to the claims.

[0024] [Embodiment] Hereinafter, a wire harness and a wire harness routing structure according to an embodiment will be described. FIG. 1 is a schematic side view showing a routing 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 of 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. This wire harness 40 is attached to the vehicle body 10 in a state of being routed along the path connecting the vehicle body side device 18 and the wheel side device 28.

[0026] The vehicle body 10 is the vehicle body in an automobile. In FIG. 1, the portion around the wheel 20 of the vehicle body 10 is illustrated. The vehicle body 10 includes a floor portion 12 and a body portion 14. The floor portion 12 is the portion facing the ground. The body portion 14 is provided above the floor portion 12 and forms the exterior of the vehicle body 10. The vehicle body 10 may be a monocoque body in which a frame, which is a rigid body, and the body are integrated, or may be configured such that the body is mounted on the frame. In the following description, the traveling direction when the automobile is normally traveling may be referred to as the front, and the opposite side as the rear.

[0027] The wheel 20 is rotatably supported by 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 in any suspension method such as an axle suspension method, an independent suspension method, a torsion beam suspension method, etc. In the example shown in FIG. 1, the arm 32 supports the wheel 20. More specifically, the arm 32 is provided so as to extend in the front-rear direction of the vehicle body 10. Here, the base end portion of the arm 32 extends forward with respect to the wheel 20. The base end portion of the arm 32 is swingably supported by the vehicle body side support portion 13. The axis X that becomes the center when the base end portion of the arm 32 swings is the rotation axis X on the vehicle body 10 side when the arm 32 swings. In the present embodiment, the rotation axis X is along the left-right direction of the vehicle body 10. The base end portion of the arm may be swingably supported on the floor portion obliquely forward, inside, obliquely rearward, rearward, etc. with respect 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, may be along the front-rear direction, or may be along an oblique direction with respect to both the left-right direction and the front-rear direction.

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

[0029] As described above, since the base end portion of the arm 32 is supported by the vehicle body side support portion 13 so as to be swingable, the arm 32 supports the wheel 20 so as to be movable in the vertical direction within the fender apron 16. With the moving direction of the wheel 20 restricted by the arm 32, the spring 35 and the damper 36 are interposed between the tip of the arm 32 and the vehicle body 10. The spring 35 and the damper 36 absorb the impact caused by the unevenness of the road surface during traveling.

[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 a device incorporated in the wheel 20 and moving in the vertical direction together with the wheel 20 with respect to the vehicle body 10. Such wheel side devices 28 are assumed to be, for example, sensors, electric brakes, driving motors, etc. The sensor is, for example, a sensor that detects the rotational speed of the wheel. The electric brake includes a motor, etc., and is a brake that brakes the rotation of the wheel 20 using electricity as power. The electric brake may be an electric parking brake used when the vehicle is parked, or a brake used when the vehicle is traveling. The driving motor is a motor incorporated in 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 and supplies power to and from the wheel side device 28. For example, the vehicle body side device 18 is an ECU (Electronic Control Unit) that receives signals from the sensor and controls the above electric brake or driving motor. The vehicle body side device 18 may be provided inside the vehicle body 10 or outside the vehicle body 10.

[0031] In the present embodiment, an example 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 wheels 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. Further, in the present embodiment, a case is shown in which one end portion of the wire harness 40 is connected to the vehicle body side device 18 and the other end portion is connected to the wheel side devices 28, 28. One end portion of the wire harness 40 may be connected to the 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 is superior in bend resistance to the first wiring member 50. Here, the superiority or inferiority of the bend resistance can be evaluated by the disconnection state of the core wire or the like when repeated bending is applied to the wiring member. For example, a left - right bending test may be performed in which the wiring member to be evaluated is bent 90 degrees along the arc of the outer peripheral surface of a cylinder and then returned to a straight shape, and then the same operation of bending 90 degrees along the arc on the opposite side and then returning to a straight shape is repeated. In this case, the number of times until the core wire of the wiring member breaks (when there are a plurality of core wires, the number of times until any one of the core wires breaks) may be used to evaluate the superiority or inferiority of the bend resistance.

[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 in the wiring members 50, 60 are portions where bending deformation can occur between the vehicle body 10 and the wheels 20 due to the displacement of the wheels 20 with respect to the vehicle body 10. Depending on the paths of the wiring members 50, 60 in the automobile, the entire wiring members 50, 60 may be external path portions, or a part of the wiring members 50, 60 may be external path portions. In the present embodiment, since the vehicle body side device 18 is provided inside the vehicle body 10, the wiring members 50, 60 are guided from inside the vehicle body 10 through the outside of the vehicle body 10 to the wheels 20. Therefore, a part of the wiring members 50, 60 is the external path portion 50a,60a It is as follows.

[0034] More specifically, the second wiring member 60 is drawn out to the outside through a hole 16h formed in the fender apron 16. The hole 16h may be formed in the radially outer portion of the fender apron 16 with respect to the wheel 20, or may be formed in the portion of the fender apron 16 on the inner side in the vehicle width direction with respect to the wheel 20. The first wiring member 50 is drawn out to the outside through a hole 12h formed in the floor portion 12 of the vehicle body 10. The hole 12h is formed in the portion of the floor portion 12 around the vehicle body side support portion 13. The hole 12h may be formed in the portion between the wheel 20 and the vehicle body side support portion 13 of the floor portion 12, or may be formed in other portions.

[0035] Grommets 51 and 61 are provided in the middle of the longitudinal directions of the wiring members 50 and 60. The grommets 51 and 61 are annular members formed of an elastic material such as rubber and are externally fitted to the wiring members 50 and 60. An annular groove into which the edges of the holes 12h and 16h fit may be formed in the outer peripheral portions of the grommets 51 and 61. The grommets 51 and 61 are interposed between the wiring members 50 and 60 and the holes or gaps formed in the vehicle body 10, and can protect the wiring members 50 and 60 and suppress the intrusion of water.

[0036] In the present embodiment, the portion of the first wiring member 50 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 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 in the wiring members 50 and 60 do not necessarily need to be distinguished based on the grommets. For example, they may be distinguished using brackets for attaching the wiring members 50 and 60 to the vehicle body, the attachment state to the vehicle body 10, etc. as clues.

[0037] The external path portion 50a and the external path portion 60a may be separated so as to be arranged along separate 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 addition, in the present 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 and 60 inside the vehicle body 10 are different, the overall length of the first wiring member 50 and the overall length of the second wiring member 60 may be the same, or the length relationship may be reversed.

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

[0040] The second wiring member 60 includes the second electric wires 62, 62. The second electric wires 62, 62 are, for example, signal lines. For example, when the second wiring member 60 is connected to a sensor, the second electric wires 62, 62 may be signal lines for outputting a detection signal of the sensor. The second electric wires 62, 62 may also be signal lines for transmitting other control signals. The second wiring member 60 may include only signal lines.

[0041] Also, 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 according to the thickness of the electric wires. Therefore, as described above, it is suitable to use the first electric wires 52, 52 as power supply lines and the second electric wires 62, 62 as signal lines.

[0042] Note that the first wiring member 50 may include first electric wires 52, 52 having different thicknesses. The second wiring member 60 may include second electric wires 62, 62 having 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. Also, the thickness may be evaluated based on the size of the cross-sectional area (the area of the cross-section in a plane orthogonal 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 formed of copper, a copper alloy, aluminum, an aluminum alloy, or the like. The core wire 52a may be an aggregate of a plurality of strands (usually, a stranded body) or may be constituted by a single strand. The coating 52b is formed by extrusion coating or the like of resin around the core wire 52a.

[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, an adhesive tape wound in a spiral shape, 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 at a partial location or an entire region in their longitudinal directions. For example, by inserting the first electric wires 52, 52 into the grommet 51, the first electric wires 52, 52 are bundled together. The bracket 58 described below also serves to bundle the first electric wires 52, 52. A bracket provided at another location different from the bracket 58 may keep the first electric wires 52, 52 in a bundled state.

[0046] Further, a bracket 58 is provided at an intermediate portion in the longitudinal direction of the first wiring member 50. The bracket 58 is formed by pressing a metal plate or the like. The bracket 58 includes a wire attachment portion 58a and an arm-side attachment portion 58b. The wire attachment portion 58a is a portion for attaching to the first wires 52, 52. Here, the wire attachment portion 58a is plastically deformed so as to surround the first wires 52, 52, and thus is attached to the first wires 52, 52. The arm-side attachment portion 58b is a portion for attaching 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 and tightened to the screw, whereby the arm-side attachment portion 58b is attached to the arm 32. The bracket 58 may be attached to the first wiring member 50 by a screw fastening structure or the like. The bracket 58 may be attached to the arm 32 by welding, a fitting structure, or the like.

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

[0048] The second wires 62, 62 included in the second wiring member 60 include a core wire 62a and a coating 62b. The core wire 62a has the same configuration as the core wire 52a, and the coating 62b has the same configuration as the coating 52b. Here, as described above, the first wires 52, 52 are thicker than the second 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 by extrusion coating or the like of resin around the second electric wires 62, 62.

[0050] Note 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 an adhesivetape wound in a spiral, 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 formed 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. By connecting this connector 70 to the vehicle body side device 18 by a connector, 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. At least one of 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 side device without going through a connector connection.

[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 different from the connector 72. The connectors 72, 74 have a connector housing formed of resin or the like, similar to the above connector 70, and terminals at the ends of the first electric wires 52, 52 or the second electric wires 62, 62 are inserted into the connector housing. By connecting the connectors 72, 74 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 within the wheel-side device without passing through a connector connection.

[0055] The wire harness 40 is routed between the vehicle body 10 and the wheel 20 in an automobile as follows. That is, a vehicle-body-side device 18 is provided within 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 heads 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 attached to the hole 12h. The external path portion 50a of the first wiring member 50 runs along the arm 32 from near the rotation axis X of 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. A second wiring member 60 extending from the connector 70 heads toward the hole 16h in the fender apron 16 and is drawn out of the vehicle body 10 through the hole 16h. Here, a grommet 61 attached to the second wiring member 60 is attached to the hole 16h. The external path portion 60a of the second wiring member 60 reaches the inside of the wheel 20 by going downward from the hole 16h. Then, a 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] FIG. 4 is an explanatory diagram showing changes in the bending of the external path portions 50a and 60a when the wheel 20 is vertically displaced. In FIG. 4, the wheel 20 shown by the solid line is located above the height H from the wheel 20 shown by the two-dot chain line.

[0057] First, focusing on the second wiring member 60, since the hole 16h is above the connector 74, the distance between the hole 16h and the connector 74 is likely to vary due to the vertical movement of the wheel 20. When the wheel 20 is in the upper position, the distance between the hole 16h and the connector 74 becomes smaller. Therefore, the external path portion 60a is in a state of bending at a sharp angle between the hole 16h and the connector 74. Also, when the wheel 20 is in the lower position, the distance between the hole 16h and the connector 74 becomes larger. Therefore, the external path portion 60a is in a straight state or a state of bending at a gentle angle between the hole 16h and the connector 74.

[0058] Focus on the first wiring member 50. In this case, since the hole 12h is located at a position separated in a direction intersecting with the connector 72 the distance variation between the hole 12h and the connector 72 is less likely to occur due to the vertical movement of the wheel 20. The bending deformation of the first wiring member 50 can occur due to the relative position variation between the portion of the arm 32 that supports the first wiring member 50 (here, the portion where the bracket 58 is attached) and the hole 12h. The position variation of the arm 32 with respect to the vehicle body 10 becomes smaller as it goes from the tip of the arm 32 (i.e., the wheel 20) towards the base end of the arm 32. Therefore, the degree of bending deformation of the first wiring member 50 caused by the 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 bent and deformed repeatedly within the range where the arm 32 swings around the rotation axis X.

[0059] Therefore, for the second wiring member 60 with excellent flexural resistance, it can be routed so that the external path length L2 is shorter than the external path length L1, and for the first wiring member 50, it can be routed along a path that is less likely to bend by detouring around a path that is more likely to bend with an external path length L1 longer than the external path length L2.

[0060] According to the wire harness 40 configured as described above and the wiring structure 30 of the wire harness 40, since 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, it is easy to route along a path that avoids a path that is prone to bending. Also, since the second wiring member 60 is more excellent in bending resistance than the first wiring member 50, it 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 separate paths according to their respective bending resistances, the bending resistance of the entire wire harness 40 can be improved.

[0061] Also, 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 will be routed together in a large space. In this embodiment, since the first wiring member 50 and the second wiring member 60 are routed along separate paths, the wiring spaces for the first wiring member 50 and the second wiring member 60 can be made smaller. Thereby, it is suitable for routing in a narrow space.

[0062] Also, if the first electric wires 52, 52 included in the first wiring member 50 are power supply lines and the second electric wires 62, 62 included in the second wiring member 60 are signal lines, it is easy to route the power supply lines that are difficult to bend along a path that avoids a path that is prone to bending. Also, it is easy to route the signal lines that are prone to bending along a path that is prone to bending separately from the power supply lines. Also, since the power supply lines and the signal lines are routed separately, the influence of noise between them can be suppressed.

[0063] Also, it is easy to route 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 along a path that avoids a path that is prone to bending. Also, 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 arranged in a short path.

[0064] Also, 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 flex resistance and the like.

[0065] Further, if the first wiring member 50 is supported along the arm 32 by the bracket 58, the first wiring member 50 can be easily routed along a path that avoids a path where it is likely to bend.

[0066] Also, if the bracket 58 is provided closer to the rotation axis X, the first wiring member 50 will pass through a position closer to the rotation axis X of the arm 32, and the first wiring member 50 can be routed along a path that avoids a path where it is more likely to bend.

[0067] Note that the suspension device that supports the wheel 20 with respect to the vehicle body 10 is not limited to the above example. For example, as shown in FIG. 5, the base end portion of the arm 132 corresponding to the arm 32 may extend inward in the vehicle width direction with respect to the wheel 20. The base end portion of the arm 132 is supported swingably by a vehicle body side support portion 113 provided on the floor portion 12 at a position inside the vehicle width direction with respect to the wheel 20. In this case, the axis X that becomes the center when the base end portion of the arm 132 swings is along the front-rear direction of the vehicle body 10.

[0068] Also in this case, similar to the above embodiment, the bracket 58 of the first wiring member 50 may be fixed to the arm 132, and at least a part of the external path portion 50a of the first wiring member 50 may be routed along the arm 132.

[0069] Also according to this modification, the same operational effects as those of the above embodiment can be obtained.

[0070] Note that the respective configurations described in the above embodiment and each modification can be appropriately combined as long as they do not conflict with each other.

Description of Reference Numerals

[0071] 10 Vehicle body 12 - floor part 12h hole 13 - vehicle body side support part 14 - body part 16 - fender apron 16h hole 18 - vehicle body side equipment 20 - wheel 28 - wheel side equipment 30 - wiring harness routing structure 32 - arm 34 - bearing part 35 - spring 36 - damper 40 - wiring harness 50 - first wiring member 50a - external path part 51 - grommet 52 - first electric wire 52a - core wire 52b - coating 58 - bracket 58a - electric wire attachment part 58b - arm side attachment part 58bh - screw hole 60 - second wiring member 60a - external path part 61 - grommet 62 - second electric wire 62a - core wire 62b - coating 63 - sheath 70 - connector 72 - connector 74 - connector 113 - vehicle body side support part 132 - arm H - height L1 - external path length L2 - external path length X - rotation axis

Claims

1. A wire harness for connecting a vehicle body side device and a wheel side device, a first wiring member, a second wiring member having better flex resistance than the first wiring member, comprising: The first wiring member passes through the fender apron, and the second wiring member passes through the floor portion, so that the positions where the first wiring member and the second wiring member exit from the vehicle body are different, A wire harness in which the external path length of the first wiring member is longer than the external path length of the second wiring member.

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

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

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

5. The wire harness according to any one of claims 1 to 4, wherein a bracket that can be attached to an arm that supports the wheel so as to be movable in the vertical direction is attached to the first wiring member.

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

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