JP2021075200A - Wiring support structure - Google Patents

Abstract

To provide a wiring support structure for a wheel drive device that can reduce whirling of a power line due to a steered wheel and suppress interference of the power line with peripheral components.SOLUTION: A wiring support structure 30 for supporting wires 25, 28 from an in-wheel motor drive device 1 disposed inside a wheel 101 of a vehicle 100 includes: a base member 31 fixed to a strut 105 that is a component of the vehicle 100 and steered together with the wheel 101; and a holding member 33 for holding the wires 25, 28. The holding member 33 is supported to the base member 31 so as to rock in a direction substantially parallel to an axial direction of a rotational axis O of the wheel 101 as an axial direction of a rocking shaft 31b.SELECTED DRAWING: Figure 3

Description

The present invention relates to a wiring support structure.

Conventionally, in an in-wheel motor drive device installed in an inner space area of a wheel wheel, a power line for the wheel drive motor and a signal line for transmitting a control signal are wired from the in-wheel motor drive device to the vehicle body side. There is. The power line and the signal line are supported by the vehicle body frame so that a part of the power line and the signal line do not interfere with the wheels and the vehicle body frame when the wheels are moved in the vertical direction or steered in the horizontal direction.

Further, the power line has low flexibility because it is composed of a metal wire having a cross-sectional area necessary for efficiently passing a current required for driving a wheel drive motor and a coating material having high insulation. Therefore, the power line is the front-rear direction of the power line fixing portion on the vehicle body frame side from the power line connection portion of the in-wheel motor drive device in order to suppress bending stress generated in the power line due to the movement of the in-wheel motor drive device. It is wired in a substantially U shape visually. In this way, the curvature of the power line is made as small as possible, and the power line is supported so as to move easily in accordance with the movement of the wheels, thereby suppressing the occurrence of bending and twisting. For example, as described in Patent Document 1.

Japanese Unexamined Patent Publication No. 2017-185908

The power line described in Patent Document 1 extends downward from the in-wheel motor drive device side portion extending downward from the power line connection portion of the in-wheel motor drive device and the power line fixing portion on the vehicle body frame side. It is composed of a protruding vehicle body frame side portion and an intermediate portion that connects the in-wheel motor drive device side portion and the vehicle body frame side portion while being curved so as to bulge downward. When the wheels are steered, the in-wheel motor drive side portion of the power line moves in the front-rear direction of the vehicle by rotation around the kingpin of the vehicle. On the other hand, the body frame side portion of the power line does not move regardless of the steering of the wheels. Therefore, the power line may interfere with the wheels, the vehicle body frame, etc. because the intermediate portion touches the front-rear direction of the vehicle centering on the vehicle body frame side portion due to the steering in the left-right direction of the wheels.

The present invention has been made in view of the above circumstances, and provides a wiring support structure capable of reducing the swing of the power line due to wheel steering and suppressing interference between the power line and peripheral parts. The purpose is.

That is, the first invention is a wiring support structure that supports wiring from a wheel drive device arranged in a wheel of a vehicle, and is fixed to a component of the vehicle that is steered together with the wheel. A base member and a holding member for holding the wiring are provided so that the holding member swings in a direction substantially parallel to the axial direction of the rotation axis of the wheel as the axial direction of the swing axis. It is a wiring support structure supported by the base member.

In the second invention, the swing angle of the holding member when the wheel is steered to the maximum right steering angle and the swinging of the holding member when the wheel is steered to the maximum left steering angle. It is a wiring support structure in which the base member is arranged so as to be equal to the moving angle.

A third invention is a wiring support structure in which a plurality of the wirings from the wheel drive device are separately supported by the wiring support structure of the first invention.

A fourth invention is a wiring support structure in which a swing shaft is provided on the base member and the holding member is supported by the swing shaft.

As the effect of the present invention, the following effects are exhibited.

That is, in the first invention and the fourth invention, when the wheel drive device side portion of the wiring is rotated around the kingpin of the vehicle by the wheel steering, the wheel drive device side portion of the wiring is held. The holding member is swung toward the vehicle body frame side portion of the wiring fixed to the vehicle body frame. That is, in response to the steering of the wheels, the wheel drive device side portion of the wiring is swung so as to extend toward the vehicle body frame side portion, so that the bending of the intermediate portion of the wiring due to the steering of the wheels is suppressed. Will be done. As a result, the wiring support structure can reduce the swing of the power line due to the steering of the wheels and suppress the interference between the power line and the peripheral parts.

In the second invention, the amount of movement of the wheel drive side portion of the wiring when the wheel is steered to the right and the amount of movement of the wheel drive side portion of the wiring when the wheel is steered to the left are substantially equal. Therefore, the degree of bending and twisting of the middle part of the wiring due to the left and right steering of the wheel is evenly distributed. As a result, the wiring support structure can reduce the swing of the power line due to the steering of the wheels and suppress the interference between the power line and the peripheral parts.

In the third invention, since a plurality of wirings arranged at different positions swing independently according to the amount of movement of the drive device side portion for each wheel, the influence of bending or twisting of other wirings is exerted. I will not receive it. As a result, the wiring support structure can reduce the swing of the power line due to the steering of the wheels and suppress the interference between the power line and the peripheral parts.

Schematic diagram of the front right wheel of the vehicle as seen from the front. Expanded sectional view of the in-wheel motor drive device. The cross-sectional view which shows the state which the lid part is open in the wiring support structure. The cross-sectional view which shows the state which the wiring is held in the wiring support structure. FIG. 5 shows a wiring support structure and wiring attached to the vehicle. (A) shows the wiring lion structure and wiring attached to the unsteered wheel, and (B) shows the B arrow view in FIG. 5 (A). FIG. 6 shows a wiring support structure and wiring attached to a vehicle. (A) shows a wiring lion structure and wiring attached to a wheel that is steered to the right, and (B) shows a view taken along the arrow C in FIG. 6 (A). FIG. 7 shows a wiring support structure and wiring attached to the vehicle. (A) shows the wiring lion structure and wiring attached to the wheel steered to the left, and (B) shows the D arrow view in FIG. 7 (A).

A wheel 101 provided with the in-wheel motor drive device 1 according to the present invention and a suspension device 104 supporting the wheel 101 will be described with reference to FIG.

As shown in FIG. 1, the in-wheel motor drive device 1 which is a wheel drive device is arranged in the wheel 101 of the vehicle 100. The wheel 101 of the vehicle 100 is composed of a wheel wheel 102 and a tire 103. An in-wheel motor drive device 1 is arranged inside the wheel wheel 102. The in-wheel motor drive device 1 is configured to be connected to the wheel wheel 102 to drive the wheel 101. The wheels 101 are connected to the vehicle body frame 101a by the suspension device 104.

The suspension device 104 is a shock absorber that reduces the vibration of the ground transmitted from the wheels 101. In the present embodiment, the suspension device 104 is a strut type suspension device, and includes a lower arm 109 extending in the vehicle width direction and a strut 105 arranged above the lower arm 109 and extending in the vertical direction. The strut 105 is arranged inside the wheel wheel 102 and the in-wheel motor drive device 1 in the vehicle width direction. The lower end of the strut 105 is connected to the in-wheel motor drive device 1. The upper end of the strut 105 is connected to the vehicle body frame 101a above the wheel wheel 102. When the wheels 101 are steered, the struts 105 rotate together with the in-wheel motor drive device 1.

The strut 105 is a suspension member having a shock absorber 106 built in the upper end region and can be expanded and contracted in the vertical direction. A coil spring 107, which is outlined by a virtual line, is arranged on the outer circumference of the shock absorber 106 so as to relax the axial force in the vertical direction acting on the strut 105. A pair of coil spring seats 108a and 108b that sandwich and hold the upper end and the lower end of the coil spring 107 are provided at the upper end and the center of the strut 105. Inside the shock absorber 106, a damper (not shown) for dampening the axial force acting on the strut 105 is provided.

The lower arm 109 is a suspension member arranged below the axis of the in-wheel motor drive device 1. The lower arm 109 is connected to the in-wheel motor drive device 1 via a ball joint (not shown) at the outer end in the vehicle width direction. Further, the lower arm 109 is connected to a vehicle body side member (not shown) at the inner end in the vehicle width direction. The lower arm 109 is configured to be swingable in the vertical direction with the inner end in the vehicle width direction as the base end and the outer end in the vehicle width direction as the free end. The vehicle body side member means a member attached to the vehicle body side in view of the members to be described.

The tie rod 110 is arranged above the lower arm 109. The tie rod 110 is a rod for steering the wheel 101. The tie rod 110 is arranged behind the axis of the vehicle and extends in the vehicle width direction, and the outer end of the tie rod 110 in the vehicle width direction is rotatably connected to the rear portion of the in-wheel motor drive device 1. The rear part of the in-wheel motor drive device 1 means the rear part in the front-rear direction of the vehicle. The inner end of the tie rod 110 in the vehicle width direction is connected to a steering device (not shown). The steering device is configured to move the tie rod 110 forward and backward in the vehicle width direction to steer the in-wheel motor drive device 1 and the wheel wheels 102.

Hereinafter, the in-wheel motor drive device 1 which is the first embodiment of the in-wheel motor drive device according to the present invention will be described with reference to FIG.

The in-wheel motor drive device 1 is a drive device that applies a driving force to the wheels 101 from inside the wheel wheels 102 of the vehicle. The in-wheel motor drive device 1 reduces the rotation of the wheel hub bearing portion 2 connected to the wheel wheel 102 represented by a virtual line, the motor portion 18 for driving the wheel wheel 102 of the wheel 101, and the motor portion 18. It includes a speed reducing portion 7 that transmits to the wheel hub bearing portion 2 and a main body casing 29. The in-wheel motor drive device 1 is arranged in the wheel house of the vehicle 100. The motor unit 18 and the speed reduction unit 7 are not arranged coaxially with the axis of the wheel hub bearing portion 2, but are arranged offset from the axis of the wheel hub bearing portion 2.

A plurality of wheel hub bearing portions 2 are arranged in an outer ring 3 as a hub ring to be coupled to the wheel wheel 102, a fixed shaft 4 passed through a central hole of the outer ring 3, and an annular gap between the outer ring 3 and the fixed shaft 4. It has a rolling element 5 and constitutes an axle. The fixed shaft 4 extends along the axis and penetrates the main body casing 29 forming the outer shell of the speed reduction unit 7. The tip of the fixed shaft 4 penetrates the front portion of the main body casing 29 and protrudes outward in the vehicle width direction from the front portion. The root portion of the fixed shaft 4 penetrates the back surface portion of the main body casing 29. The carrier 6 is fixed to the root portion. The carrier 6 is connected to the suspension device 104 and the tie rod 110 outside the main body casing 29. Outer ring 3 is. It is configured to be coupled with the wheel wheel 102 and rotate integrally with the wheel wheel 102.

The reduction gear 7 includes an input shaft 8, an input gear 9, a first intermediate shaft 11, a first intermediate gear 10, a second intermediate gear 12, a second intermediate shaft 14, a third intermediate gear 13, a fourth intermediate gear 15, and an output. It has a shaft 17, an output gear 16, and a main body casing 29. The first intermediate shaft 11 and the second intermediate shaft 14 are arranged in parallel with the input shaft 8 and the output shaft 17. That is, the reduction gear 7 is configured as a four-axis parallel shaft gear reducer. An input gear 9 is formed on the input shaft 8. The first intermediate gear 10 and the second intermediate gear 12 are formed on the first intermediate shaft 11, and the third intermediate gear 13 and the fourth intermediate gear 15 are formed on the second intermediate shaft 14. .. An output gear 16 is formed on the output shaft 17.

The input shaft 8 is coaxially coupled to the motor rotation shaft 19 of the motor unit 18. The input gear 9 is meshed with the first intermediate gear 10. The second intermediate gear 12 is meshed with the third intermediate gear 13. The fourth intermediate gear 15 is meshed with the output gear 16. The output shaft 17 provided with the output gear 16 is connected to the outer ring 3 of the wheel hub bearing portion 2.

The driving force from the motor unit 18 is transmitted to the input shaft 8 to rotate the input gear 9. The driving force transmitted to the input gear 9 is decelerated and transmitted to the first intermediate gear 10. The driving force transmitted to the first intermediate gear 10 is transmitted to the second intermediate gear 12 via the first intermediate shaft 11. The driving force transmitted to the second intermediate gear 12 is decelerated and transmitted to the third intermediate gear 13. The driving force transmitted to the third intermediate gear 13 is transmitted to the fourth intermediate gear 15 via the second intermediate shaft 14. The driving force transmitted to the fourth intermediate gear 15 is decelerated and transmitted to the output gear 16. The driving force transmitted to the output gear 16 is transmitted to the outer ring 3 of the wheel hub bearing portion 2 via the output shaft 17.

The motor unit 18 has a motor rotating shaft 19, a rotor 20, a stator 21, and a motor casing 22, and is arranged in this order from the axis of the motor unit 18 to the outer diameter side. The motor unit 18 is an inner rotor and outer stator type radial gap motor, but other types may be used.

The axes that serve as the rotation centers of the motor rotating shaft 19 and the rotor 20 are arranged so as to be parallel to the axes of the wheel hub bearing portion 2. The motor casing 22 is formed in a tubular shape and is connected to the back surface portion of the main body casing 29 at one end in the axial direction. The motor rotation shaft 19 is connected to the input shaft 8 of the speed reduction unit 7. That is, the driving force of the motor unit 18 is transmitted to the wheel wheel 102 fastened to the outer ring 3 via the deceleration unit 7.

A power line terminal box 23 is provided above the in-wheel motor drive device 1. The power line terminal box 23 is arranged above the motor casing 22 and has a plurality of power line connection portions 24. The power line terminal box 23 of the present embodiment has three power line connection portions 24 and receives three-phase AC power. That is, three power lines 25 are connected to each power line connecting portion 24 of the power line terminal box 23. The three power lines 25 are connected to the inverter 101b of the vehicle body frame 101a while being held by the vehicle body by the wiring support structure 30 fixed to the vehicle body frame 101a.

A signal line 28 terminal box 26 is provided at the center of the motor casing 22. The signal line 28 terminal box 26 is separated from the power line terminal box 23. The signal line 28 terminal box 26 accommodates a rotation angle sensor (not shown). The rotation angle sensor detects the rotation angle of the motor rotation shaft 19. The signal line 28 terminal box 26 is provided with a signal line 28 connection portion 27. A signal line 28 for a rotation sensor is connected to the signal line 28 connection unit 27. One signal line 28 is connected to a control device (not shown) while being held by the vehicle body by a wiring support structure 30 fixed to the vehicle body frame 101a.

The in-wheel motor drive device 1 configured in this way is connected to the suspension device 104, and the outer ring 3 of the wheel hub bearing portion 2 is connected to the wheel wheel 102. That is, the in-wheel motor drive device 1 is configured to be moved in the vertical direction and steered together with the wheels 101 while being arranged in the wheel wheels 102. The in-wheel motor drive device 1 is output from the motor unit 18, decelerates the driving force by the deceleration unit 7, and then transmits the driving force to the outer ring 3 of the wheel hub bearing unit 2.

Hereinafter, the wiring support structure 30 which is the first embodiment of the wiring support structure 30 according to the present invention will be described with reference to FIGS. 1, 3 and 4.

As shown in FIG. 3, the wiring support structure 30 is a structure that supports the power line 25 and the signal line 28, which are the wirings of the in-wheel motor drive device 1, from the struts 105 of the suspension device 104. The wiring support structure 30 includes a base member 31, a clamp member 32, and a holding member 33.

The base member 31 is the main structure of the wiring support structure 30. The base member 31 is composed of a fixing portion 31a fixed to the strut 105 of the suspension device 104 and a swing shaft 31b in which the holding member 33 is swingably supported. The fixing portion 31a is formed in a plate shape. A swing shaft 31b having a predetermined length is formed at substantially the center of one side surface of the fixed portion 31a. The fixed portion 31a is formed with screw holes 31c on both sides of the swing shaft 31b. Further, a base member side grip portion 31d into which the strut 105 of the suspension device 104 can be fitted is formed at substantially the center of the other side surface of the fixing portion 31a.

The swing shaft 31b is made of a metal such as steel in consideration of durability. Further, the surface of the swing shaft 31b is coated with a synthetic resin which is a lubricating property material, for example, a fluororesin, a silicone resin, a polyamide resin, a polyimide resin, or the like. Two or more kinds of these synthetic resins may be mixed. Alternatively, these synthetic resins may be mixed with other general synthetic resins. The surface of the swing shaft 31b may be plated with high durability, or the surface may be modified so as to have a self-lubricating action. Further, it may be formed from a synthetic resin having a self-lubricating action or a sintered material containing molybdenum.

The clamp member 32 sandwiches the strut 105 of the suspension device 104. The clamp member 32 is made of a plate material. The clamp member 32 is formed with a clamp member-side grip portion 32a that bulges in one direction at the center. The side grip portion 32a on the clamp member side is formed so that the side surface of the strut 105 can be fitted. Further, the clamp member 32 is formed with through holes 32b on both sides of the clamp member side grip portion 32a. Each through hole 32b of the clamp member 32 is formed at a pitch that overlaps with each screw hole 31c of the base member 31. That is, the clamp member 32 is configured so that it can be bolted to the base member 31.

As shown in FIG. 1, the base member 31 is arranged on the side surface of the strut 105 on the vehicle body frame 101a side. A strut 105 is fitted to the base member side grip portion 31d of the base member 31. Further, a clamp member 32 is fixed to the other side surface of the base member 31. The clamp member 32 is arranged on the wheel 101 side of the strut 105, and is fixed to the base member 31 with the strut 105 fitted to the clamp member side grip portion 32a. As a result, the base member 31 and the clamp member 32 grip the strut 105. That is, the base member 31 is fixed at an arbitrary vertical position on the strut 105.

The holding member 33 is a member that holds the power line 25 and the signal line 28. The holding member 33 includes a base 34 and a lid 35 that hold the power line 25 and the signal line 28.

The base 34 is formed in a substantially plate shape. A base side groove 34a having a semicircular cross section is formed on one side surface of the base portion 34. In the present embodiment, the base 34 is formed with three base side grooves 34a for the power line 25 in which the power lines 25 can be aligned without gaps, and the signal lines 28 are for the signal lines 28 which can be aligned without gaps. One base side groove 34a is formed in parallel. A swing hole 34b is formed at substantially the center of the other side surface of the base portion 34. A base side protruding portion 34c having a base screw hole 34d is formed on the side surface of the base portion 34.

The surface of the swing hole 34b is coated with a synthetic resin which is a lubricating property material, for example, a fluororesin, a silicone resin, a polyamide resin, a polyimide resin, or the like. Two or more kinds of these synthetic resins may be mixed. Alternatively, these synthetic resins may be mixed with other general synthetic resins. Further, the rocking hole 34b may be plated with high durability on the surface of the sphere or surface-modified so as to have a self-lubricating action. Further, the base 34 may be formed from a synthetic resin having a self-lubricating action or a sintered material containing molybdenum. Further, a bush made of a special lubricating material may be inserted.

The lid portion 35 is formed in a substantially plate shape. A lid side groove 35a having a semicircular cross section is formed on one side surface of the lid portion 35. In the present embodiment, the lid portion 35 is formed with three lid side grooves 35a for the power line 25 to which the power lines 25 can be combined without gaps, and the signal lines 28 can be combined without gaps. One lid side groove 35a for 28 is formed in parallel. On the side surface of the lid portion 35, a lid portion side protruding portion 35b having a lid portion through hole 35c is formed. The side surface of the lid portion 35 facing the lid portion side projecting portion 35b is connected to the side surface of the base portion 34 facing the base portion side projecting portion 34c via a hinge 36. As a result, the lid portion 35 is configured to be openable and closable with respect to the base portion 34 with the axis of the hinge 36 as a fulcrum.

As shown in FIG. 4, the holding member 33 is configured such that one side surface having the lid side groove 35a and one side side surface having the base side groove 34a of the base portion 34 are in close contact with each other in the closed state of the lid portion 35. There is. At this time, the lid gutter 35a of the lid 35 faces the base gutter 34a of the base 34, respectively. That is, the holding member 33 constitutes a holding hole 33a in which the power line 25 and the signal line 28 are fitted by the base side groove 34a and the lid side groove 35a in the closed state of the lid portion 35. Further, in the holding member 33, the lid portion 35 is fixed to the base portion 34 by screwing bolts into the base screw hole 34d of the base portion 34 and the lid portion through hole 35c of the lid portion 35. Further, in the holding member 33, since the base side groove 34a and the lid side groove 35a are separated from each other in the open state of the lid portion 35, the power line 25 and the signal line 28 are separated from each other by the base side groove 34a and the lid side groove 35a. The holding hole 33a to be fitted is not formed.

The swing shaft 31b of the base member 31 is slidably fitted in the swing hole 34b of the base portion 34. As a result, the holding member 33 is configured to be swingable around the swing shaft 31b around the swing shaft 31b of the base member 31. That is, the holding member 33 is swingably supported around the swing shaft 31b in a state of being fixed to the strut 105 via the base member 31.

As shown in FIG. 1, in the wiring support structure 30, the base member 31 is fixed to the strut 105 in the vicinity of the in-wheel motor drive device 1. At this time, the base member 31 is arranged on the strut 105 in a direction in which the axial direction of the rocking shaft 31b (dotted chain line A) is substantially parallel to the axial direction of the rotation axis of the wheel 101 (dotted chain line O). (See FIG. 1). Although the base member 31 is fixed to the strut 105, it may be fixed to a vehicle component that is steered together with the wheels at an appropriate position for supporting the wirings 25 and 28. Further, the method of fixing the base member 31 is not limited to fastening the clamp member 32 with bolts, but may be directly fixed to the strut 105.

The wiring support structure 30 grips the power line 25 and the signal line 28 from the in-wheel motor drive device 1 by the base side groove 34a and the lid side groove 35a of the holding member 33. That is, the wiring support structure 30 holds the power line 25 and the signal line 28 in the holding holes 33a, respectively.

Next, an example of the movement of the wiring support structure 30 when the left wheel 101 (hereinafter, simply referred to as “left front wheel 101”) is steered will be described with reference to FIGS. 1, 5 to 7. In the following description, the power line 25 and the signal line 28 are collectively referred to as wiring 25. The wiring of the in-wheel motor drive device 1 extends upward from the power line terminal box 23 on the vehicle body frame 101a side of the strut 105, and passes through the wheel 101 side of the strut 105 under the lower coil spring seat. It is assumed that the frame 101a is bent back.

As shown in FIG. 1, the wirings 25 and 28 have an in-wheel motor drive device side portion 25a in which the strut 105 is bent back and the strut 105 extends downward on the vehicle body frame 101a side, and the in-wheel motor drive. An intermediate portion 25b that is curved so as to bulge downward from the device side portion 25a and extends to the vicinity of the vehicle body frame 101a, and an intermediate portion 25b that extends downward from the wiring fixing portion 101b on the vehicle body frame 101a side to the intermediate portion 25b. It is composed of a vehicle body frame side portion 25c and the vehicle body frame side portion 25c.

The upper end portion of the wiring 25 on the in-wheel motor drive device side portion 25a is held by the holding member 33 of the wiring support structure 30. Further, the upper end portion of the wiring 25 on the vehicle body frame side portion 25c is fixed to the vehicle body frame 101a. That is, the wiring 25 has a range from the upper end portion of the in-wheel motor drive device side portion 25a held in the wiring support structure 30 to the upper end portion of the vehicle body frame side portion 25c fixed to the wiring fixing portion 101b. Not fixed.

As shown in FIG. 5A, when the left front wheel 101 is in a straight-ahead state, that is, when the left front wheel 101 is not steered, the wiring support structure 30 fixed to the strut 105 of the suspension device 104 is wired. It faces the vehicle body frame side portion 25c of 25. In this state, in the wiring 25, the in-wheel motor drive device side portion 25a, the intermediate portion 25b, and the vehicle body frame side portion 25c are arranged in a substantially straight line when viewed upward. Therefore, as shown in FIG. 5B, the intermediate portion 25b connecting the in-wheel motor drive device side portion 25a and the vehicle body frame side portion 25c is not bent or twisted.

As shown in FIG. 6A, when the left front wheel 101 is steered to the right to the maximum angle, the strut 105 of the suspension device 104 and the in-wheel motor drive device 1 rotate clockwise around a kingpin (not shown). Will be done. The wiring support structure 30 fixed to the strut 105 rotates clockwise together with the in-wheel motor drive device side portion 25a of the wiring 25 held, and moves toward the left rear of the vehicle body frame 101a.

The axial direction of the swing shaft 31b of the base member 31 of the wiring support structure 30 is directed to substantially the same direction as the axial direction of the rotation axis O of the left front wheel 101 that has been steered to the right. The holding member 33 of the wiring support structure 30 is moved to the rear of the vehicle body frame side portion 25c of the wiring 25 by right steering. The in-wheel motor drive device side portion 25a of the wiring 25 held by the holding member 33 is pulled to the vehicle body frame side portion 25c via the intermediate portion 25b of the wiring 25.

As shown in FIG. 6B, at this time, the holding member 33 is swung to the right front in the direction of the vehicle body frame side portion 25c of the wiring 25 by the tensile force applied to the wiring 25, and is swung counterclockwise. Tilt at an angle α. As a result, the in-wheel motor drive device side portion 25a of the wiring 25 is in a state of extending downward toward the right front, which is the direction of the vehicle body frame side portion 25c of the wiring 25. In this state, the wiring 25 is suppressed from being curved from the in-wheel motor drive device side portion 25a to the intermediate portion 25b due to right steering when viewed upward, and the intermediate portion 25b and the vehicle body frame side portion 25c are aligned substantially linearly. I'm out.

As shown in FIG. 7A, when the left front wheel 101 is steered to the left to the maximum angle, the strut 105 of the suspension device 104 and the in-wheel motor drive device 1 rotate counterclockwise with a kingpin (not shown) as the center of rotation. It is rotated. The wiring support structure 30 fixed to the strut 105 rotates counterclockwise together with the in-wheel motor drive device side portion 25a of the wiring 25 held, and moves toward the left front of the vehicle body frame 101a.

The axial direction of the swing shaft 31b of the base member 31 of the wiring support structure 30 is directed to substantially the same direction as the axial direction of the rotation axis O of the left front wheel 101 that has been steered to the left. The holding member 33 of the wiring support structure 30 is moved forward of the vehicle body frame side portion 25c of the wiring 25 by turning left. The in-wheel motor drive device side portion 25a of the wiring 25 held by the holding member 33 is pulled to the vehicle body frame side portion 25c via the intermediate portion 25b of the wiring 25.

As shown in FIG. 7B, at this time, the holding member 33 is oscillated and oscillated to the right rearward in the direction of the vehicle body frame side portion 25c of the wiring 25 by the tensile force applied to the wiring 25, and oscillates clockwise. Tilt at angle β. As a result, the in-wheel motor drive device side portion 25a of the wiring 25 is in a state of extending downward toward the right rear, which is the direction of the vehicle body frame side portion 25c of the wiring 25. In this state, the wiring 25 is suppressed from being curved from the in-wheel motor drive device side portion 25a to the intermediate portion 25b due to left steering when viewed upward, and the intermediate portion 25b and the vehicle body frame side portion 25c are aligned substantially linearly. I'm out.

In this way, the wiring support structure 30 fixed to the strut 105, which is a component of the vehicle 100 that is steered together with the wheels 101, has wheels of the holding member 33 that holds the in-wheel motor drive device side portion 25a of the wiring 25. By supporting the wheel 101 with a swing shaft 31b parallel to the rotation shaft O, the holding member 33 swings toward the vehicle body frame side portion 25c of the wiring 25 according to the steering of the wheel 101. That is, the in-wheel motor drive device side portion 25a of the wiring 25 is oscillated so as to extend toward the vehicle body frame side portion 25c according to the steering of the wheels 101, so that the in-wheel motor drive device side portion 25a The intermediate portion 25b connecting the vehicle body frame side portion 25c and the vehicle body frame side portion 25c is suppressed from bending or twisting.

Further, the wiring support structure 30 includes a counterclockwise swing angle α of the holding member 33 when the wheel 101 is steered to the right to the maximum angle, and a holding member 33 when the wheel 101 is steered to the left to the maximum angle. By fixing to the strut 105 so that the clockwise swing angle β of the wheel 101 is substantially equal to that of the wheel 101, the degree of bending and twisting of the intermediate portion 25b of the wiring 25 due to the left and right steering of the wheel 101 is evenly distributed. As a result, it is possible to reduce the swing of the wiring 25 due to the steering of the wheel 101 and suppress the interference between the power line 25 and the peripheral parts.

In the present embodiment, the wiring support structure 30 holds three power lines 25 and one signal line 28, but even if each power line 25 is held by a separate wiring support structure 30. Good. The swing angle of the power line 25 depending on the steering of the wheel 101 differs depending on the holding position of the power line 25 with respect to the rotation center of the wheel 101. Therefore, the wiring support structure 30 changes the extension direction of the in-wheel motor drive device side portion 25a of each power line 25 at a swing angle according to the holding position of the power line 25 with respect to the rotation center of the wheel 101. It is possible to reduce the swing of each power line 25 due to the steering of 101 and suppress the interference between each power line 25 and peripheral parts.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, but is merely an example, and is further various as long as it does not deviate from the gist of the present invention. Of course, the scope of the present invention is indicated by the description of the scope of claims, and the equal meaning described in the scope of claims, and all changes within the scope of the claims are made. Including.

1 In-wheel motor drive device 25 Power line 28 Signal line 30 Wiring support structure 31 Base member 31b Swing shaft 33 Holding member

Claims (4)

It is a wiring support structure that supports the wiring from the wheel drive device arranged in the wheel of the vehicle.
A base member fixed to a component of the vehicle that is steered together with the wheel,
A holding member for holding the wiring and
A wiring support structure in which the holding member is supported by the base member so as to swing in a direction substantially parallel to the axial direction of the rotation shaft of the wheel as the axial direction of the swing shaft. The swing angle of the holding member when the wheel is steered to the maximum right steering angle becomes equal to the swing angle of the holding member when the wheel is steered to the maximum left steering angle. The wiring support structure according to claim 1, wherein the base member is arranged as described above. A wiring support structure in which a plurality of the wirings from the wheel drive device are separately supported by the wiring support structure according to claim 1. The wiring support structure according to any one of claims 1 to 3, wherein a swing shaft is provided on the base member, and the holding member is supported by the swing shaft.

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