JP2021142789A - Wiring supporting structure - Google Patents

Abstract

To provide a wiring supporting structure for a wheel driving device that is can restrain reduction in durability of wiring even if tensile force is generated in the wiring by movement of a wheel in a vertical direction or movement in a lateral direction .SOLUTION: A wiring supporting structure 30 for supporting wirings 25, 28 from an in-wheel motor driving device 1 provided so as to be movable relative to a vehicle body frame 101a, includes: a base member 31 fixed to the vehicle body frame 101a; a sliding member 32 supported by the base member 31 and capable of slidably holding the wirings 25, 28; a first gripping member 35 and a second gripping member 36 respectively positioned on opposite sides across the sliding member 32 and gripping the wirings 25, 28; and a cover member covering between the base member 31 and the respective gripping members; The first cover member 33 and the second cover member 34 deform in response to movement of the wirings 25, 28 held by the sliding member 32.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. A part of the power line and the signal line is supported by the vehicle body frame or the like so as not to interfere with the wheels or the vehicle body frame when the wheels move in the vertical direction or steer in the horizontal direction.

On the other hand, 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 durability of the power line may decrease due to the stress generated by bending or twisting the power line. Further, since the signal line is a wiring having a cross-sectional area sufficient to transmit an electric signal as compared with a power line, it is easy to break. For this reason, a wiring support structure that suppresses bending and twisting by supporting the power line and signal line so that they can move according to the movement of the wheel and maintains the durability of the power line and signal line is provided. Are known. For example, as described in Patent Document 1.

JP-A-2015-137065

The electric cable support structure (wiring support structure) described in Patent Document 1 is composed of a clip member for holding the electric cable (power line, signal line) and a base member fixed to the vehicle body frame. The clip member is swingably supported by the base member via a ball joint. In the support structure of the electric cable, the clip member swings in all directions with the base member as a fulcrum according to the movement of the electric cable held by the clip member. As a result, the support structure of the electric cable can suppress the occurrence of bending and twisting of the electric cable. However, in the support structure of the electric cable described in Patent Document 1, since the electric cable is gripped by a clip member, there is a problem that tensile stress is generated when a tensile force is applied to the electric cable and the durability of the electric cable is lowered. there were.

The present invention has been made in view of the above circumstances, and a wiring support capable of suppressing a decrease in wiring durability even if a tensile force is generated in the wiring due to the vertical movement or the horizontal movement of the wheel. The purpose is to provide the structure.

That is, the first invention is a wiring support structure for supporting wiring from a wheel drive device movably provided with respect to a vehicle body frame, and a base member fixed to a component of the vehicle. A sliding member that is supported by the base member and can slidably hold the wiring, a gripping member that is arranged on both sides of the sliding member and grips the wiring, and the base member. It is a wiring support structure including a cover member that covers between each of the gripping members, and the cover member is deformed according to the movement of the wiring held by the sliding member.

The second invention is a wiring support structure in which the cover member is composed of a flexible member.

A third invention is a wiring support structure in which an elastic member is arranged between the sliding member and the gripping member, and the gripping member is supported by the sliding member via the elastic member.

A fourth invention is a wiring support structure in which the elastic member is composed of a compression spring.

A fifth invention is a wiring support structure in which the sliding member is composed of an elastic member.

The sixth invention is a wiring support structure in which a lubricant is sealed in a space surrounded by the grip member, the cover member, and the base member.

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

That is, in the first invention, when an axial tensile force is applied to the wiring, the wiring slidably held in the holding hole of the sliding member is moved in the axial direction. At this time, in the wiring support structure, even if the wiring moves, the cover member covering the holding hole is deformed according to the movement of the wiring, so that the movement of the wiring is not hindered. In addition, the holding holes are not exposed to the outside. That is, in the wiring support structure, iron powder and dust are not mixed from the outside between the sliding member and the wiring, so that the wear of the wiring due to sliding is suppressed. As a result, the wiring support structure can suppress a decrease in the durability of the wiring even if a tensile force is generated in the wiring due to the vertical movement of the wheels or the horizontal movement due to the steering.

That is, in the second invention, even if the wiring moves in the axial direction, or if bending or twisting occurs, the cover member flexibly elastically deforms according to the movement of the wiring, so that the holding hole is exposed to the outside. There is nothing to do. As a result, the wiring support structure can suppress a decrease in the durability of the wiring even if a tensile force is generated in the wiring due to the vertical movement of the wheels or the horizontal movement due to the steering.

That is, in the third invention, even if the wiring moves in the axial direction or the wiring is bent or twisted, the elastic force of the elastic member is applied in the direction of returning the gripping member to the original position. That is, in the wiring support structure, the elastic force acts so as to maintain the position of the wiring in a neutral position in a state where no tensile force or bending force is generated, so that the contact between the wiring and the peripheral member is suppressed. As a result, the wiring support structure can suppress a decrease in the durability of the wiring even if a tensile force is generated in the wiring due to the vertical movement of the wheels or the horizontal movement due to the steering.

That is, in the fourth invention, excessive bending of the wiring is suppressed by the spring force of the compression spring. As a result, the wiring support structure can suppress a decrease in the durability of the wiring even if a tensile force is generated in the wiring due to the vertical movement of the wheels or the horizontal movement due to the steering.

That is, in the fifth invention, since the holding hole is elastically deformed following the movement of the wiring, the stress generated in the wiring is suppressed. As a result, the wiring support structure can suppress a decrease in the durability of the wiring even if a tensile force is generated in the wiring due to the vertical movement of the wheels or the horizontal movement due to the steering.

That is, in the sixth invention, since the lubricant is held between the wiring and the sliding member, wear between the wiring and the sliding member is suppressed for a long period of time. As a result, the wiring support structure can suppress a decrease in the durability of the wiring even if a tensile force is generated in the wiring due to the vertical movement or the horizontal movement of the wheel.

Schematic diagram of the front right wheel of the vehicle as seen from the front. A developed sectional view of an in-wheel motor drive device. FIG. 3 shows a first embodiment of the wiring support structure. (A) shows a cross-sectional view of a wiring support structure, and (B) shows a cross-sectional view taken along the arrow A in FIG. 3 (A). The schematic diagram which shows the state of wiring when the wheel of a vehicle moves in the vertical direction. FIG. 5 is a cross-sectional view showing a state in which the wiring is pulled downward in the first embodiment of the wiring support structure. FIG. 5 is a cross-sectional view showing a state in which the wiring is pulled in the left-right direction in the first embodiment of the wiring support structure. FIG. 5 is a cross-sectional view of the wiring support structure according to the second embodiment. FIG. 5 is a cross-sectional view showing a state in which the wiring is pulled downward in the second embodiment of the wiring support structure. FIG. 5 is a cross-sectional view showing a state in which the wiring is pulled in the left-right direction in the second embodiment of the wiring support structure.

The in-wheel motor drive device 1 which is an embodiment of the in-wheel motor drive device 1 according to the present invention will be described with reference to FIGS. 1 and 2.

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.

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 attenuating 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.

As shown in FIG. 2, the in-wheel motor drive device 1 is a drive device that applies a driving force to the wheels 101 (see FIG. 1) from inside the wheel wheels 102 of the vehicle. The in-wheel motor drive device 1 has a wheel hub bearing portion 2 connected to the center of the wheel wheel 102, a motor portion 18 for driving the wheel wheel 102 of the wheel 101, and a wheel hub bearing portion by decelerating the rotation of the motor portion 18. A speed reducing unit 7 that transmits to 2 and a main body casing 29 are provided. 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 of the above and constitutes an axle. The fixed shaft 4 extends along the axis line 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 attached and fixed to the root portion. The carrier 6 is connected to the suspension device 104 and the tie rod 110 (see FIG. 1) outside the main body casing 29. The outer ring 3 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 a radial gap motor of the inner rotor and outer stator type, but may be of another type.

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 cylindrical 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 below 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 (see FIG. 4).

A signal line terminal box 26 is provided at the center of the motor casing 22. The signal line terminal box 26 is separated from the power line terminal box 23. The signal line 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 terminal box 26 is provided with a signal line connection portion 27. A signal line 28 for a rotation sensor is connected to the signal line 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 in a state of being arranged in the wheel wheels 102 (see FIG. 1). 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 FIG.

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 vehicle body frame 101a. The wiring support structure 30 includes a base member 31, a sliding member 32, a first cover member 33, a second cover member 34, a first grip member 35, and a second grip member 36.

The base member 31 is the main structure of the wiring support structure 30. The base member 31 is composed of a base portion 31a provided with a sliding member 32, a first cover member 33 and a second cover member 34, and a connecting portion 31b fixed to the vehicle body frame 101a.

The base portion 31a is formed in a hollow cylindrical shape. In order to provide the first cover member 33 and the second cover member 34 on the base portion 31a, engaging portions 31c are formed at one side end in the axial direction and the other end in the axial direction, respectively. The connecting portion 31b is formed of a rectangular plate-shaped member. The connecting portion 31b is screwed to the vehicle body frame 101a. The side surface of the base portion 31a is connected to substantially the center of the upper surface of the connecting portion 31b. In the present embodiment, the base portion 31a of the base member 31 is formed in a hollow cylindrical shape, as long as the sliding member 32, the first cover member 33, and the second cover member 34 can be provided. good.

The sliding member 32 is a member that holds the wirings 25 and 28. The sliding member 32 is made of an elastic member such as rubber or synthetic resin. The sliding member 32 is formed in a cylindrical shape having a size that can be inserted inside the base portion 31a of the base member 31. The sliding member 32 is fixed to the inside of the base portion 31a of the base member 31 by adhesion or the like. The sliding member 32 is formed with holding holes 32a for each of the power line 25 and the signal line 28 to be held. The holding hole 32a is formed as a hole into which the power line 25 or the signal line 28 can be slidably inserted. That is, the holding hole 32a is formed in such a size that a gap is formed between the holding hole 32a and the inserted power line 25 or signal line 28. The holding hole 32a is formed along the axial direction of the sliding member 32. In the present embodiment, the sliding member 32 is formed with holding holes 32a for each of the power line 25 and the signal line 28, but the shape may be such that the power line 25 or the signal line 28 can be slidably held. Just do it.

The first cover member 33 and the second cover member 34 are members that cover the sliding member 32. The first cover member 33 and the second cover member 34 are made of rubber or the like which is a flexible member. The first cover member 33 and the second cover member 34 are formed in a hollow substantially cylindrical shape. Specifically, the first cover member 33 and the second cover member 34 are formed in a bellows shape. By being formed in this way, the first cover member 33 and the second cover member 34 are more easily expanded and contracted as compared with the case where the first cover member 33 and the second cover member 34 are formed in a cylindrical shape, and the amount of expansion and contraction is increased.

One opening of the first cover member 33 is engaged with one engaging portion 31c in the base portion 31a of the base member 31. Similarly, in the second cover member 34, one opening is engaged with the other engaging portion 31c in the base portion 31a of the base member 31. That is, the first cover member 33 and the second cover member 34 are arranged on both sides of the sliding member 32 in the axial direction. As a result, the sliding member 32 fixed to the base member 31 is covered on both sides in the axial direction by the first cover member 33 and the second cover member 34. Further, the first cover member 33 and the second cover member 34 are fixed to the base member 31 so that their axes are along the axial direction of the sliding member 32. As a result, the bellows of the first cover member 33 and the second cover member 34 expand and contract in the axial direction in the holding hole 32a of the sliding member 32.

The first gripping member 35 and the second gripping member 36 are members that grip the power line 25 and the signal line 28. The first gripping member 35 and the second gripping member 36 are made of elastic members such as rubber and synthetic resin. The first grip member 35 and the second grip member 36 are formed in a cylindrical shape having a size that can be inserted into the other opening of the first cover member 33 or the second cover member 34. The first gripping member 35 is fixed to the inside of the other opening of the first cover member 33 by adhesion or the like. The second gripping member is fixed to the inside of the other opening of the second cover member 34 by adhesion or the like. The first gripping member 35 and the second gripping member 36 are formed with gripping holes 35a and 36a for each of the power line 25 and the signal line 28 to be gripped. The gripping holes 35a and 36a are formed as holes into which the power line 25 or the signal line 28 can be inserted without a gap. The gripping holes 35a and 36a are formed along the axis of the holding hole 32a of the sliding member 32.

A fastening band 37 is provided between the first cover member 33 to which the first gripping member 35 is adhered and the outer portion of the second cover member 34 to which the second gripping member 36 is adhered. The fastening band 37 is formed in an annular shape, and its inner diameter can be reduced. The first gripping member 35 and the second gripping member 36 are configured to reduce the inner diameters of the gripping holes 35a and 36a by tightening the fastening band 37. That is, the first gripping member 35 and the second gripping member 36 are configured to grip the power line 25 and the signal line 28 inserted into the gripping holes 35a and 36a by tightening the fastening band 37. In the present embodiment, the first gripping member 35 and the second gripping member 36 are formed with holding holes 32a for each of the power line 25 and the signal line 28, but the power line 25 or the signal line 28 is gapped. Any shape may be used as long as it can be gripped without any problem.

In the wiring support structure 30, the connecting portion 31b of the base member 31 is fixed to the vehicle body frame 101a in the vicinity of the in-wheel motor drive device 1. In the wiring support structure 30, the first gripping member 35 is arranged toward the in-wheel motor drive device 1. In the wiring support structure 30, the power line 25 and the signal line 28 are gripped by the in-wheel motor drive device 1 to the gripping hole 35a of the first gripping member 35, the holding hole 32a of the sliding member 32, and the second gripping member 36. The holes 36a are inserted in this order. Although the base member 31 is fixed to the vehicle body frame 101a, it may be fixed to a vehicle component located at an appropriate position for supporting the wirings 25 and 28.

The wiring support structure 30 grips both sides of the power line 25 and the signal line 28 slidably inserted in the holding hole 32a in the axial direction by the first gripping member 35 and the second gripping member 36. As a result, the wiring support structure 30 grips the power line 25 and the signal line 28 in a slidable state within the expansion / contraction range of the first cover member 33 and the second cover member 34. Further, in the wiring support structure 30, the space between the base member 31 and the first grip member 35 is covered with the first cover member 33, and the space between the base member 31 and the second grip member 36 is covered with the second cover member 34. Therefore, the wirings 25 and 28 are held in a state where the sliding member 32 is sealed. Further, in the wiring support structure 30, a lubricant is injected into the holding hole 32a of the sliding member 32. As a result, the wiring support structure 30 holds the lubricant in the holding hole 32a in the closed space.

Next, the movement of the wiring support structure 30 accompanying the movement of the power line 25 and the power line will be described with reference to FIGS. 4 to 6. In the following description, the power line 25 and the signal line 28 are collectively referred to as wirings 25 and 28.

As shown in FIG. 4, when the wheel 101 moves downward (see the black arrow), the in-wheel motor drive device 1 is separated downward from the wiring support structure 30 fixed to the vehicle body frame 101a. The wirings 25 and 28 are pulled toward the in-wheel motor drive device 1 as the in-wheel motor drive device 1 moves.

As shown in FIG. 5, as the wirings 25 and 28 move downward, the first gripping member 35 and the second gripping member 36 of the wiring support structure 30 are moved downward while maintaining the distance between them. NS. Further, as the wirings 25 and 28 move toward the in-wheel motor drive device 1 side, the first grip member 35 is moved toward the in-wheel motor drive device 1 side. That is, the first gripping member 35 moves in a direction away from the sliding member 32 and toward the in-wheel motor drive device 1. Further, the second gripping member 36 moves in a direction close to the sliding member 32. At this time, the first cover member 33 of the wiring support structure 30 is curved toward the in-wheel motor drive device 1 side while being stretched downward due to elastic deformation. Further, the second cover member 34 of the wiring support structure 30 expands and contracts downward due to elastic deformation.

As the wirings 25 and 28 move downward, the wirings 25 and 28 in the holding hole 32a are slid downward in the sliding member 32 of the wiring support structure 30. Further, as the wirings 25 and 28 move toward the in-wheel motor drive device 1, the sliding member 32 elastically deforms on the first gripping member 35 side of the holding hole 32a toward the in-wheel motor drive device 1. At this time, the sliding member 32 suppresses friction with the wirings 25 and 28 by the lubricant in the holding hole 32a.

As shown in FIG. 6, when the wheel 101 is steered, the in-wheel motor drive device 1 is horizontally separated from the wiring support structure 30 fixed to the vehicle body frame 101a. As the in-wheel motor drive device 1 moves, the portion of the wiring 25/28 on the first grip member 35 side is pulled toward the in-wheel motor drive device 1.

As the wirings 25 and 28 move toward the in-wheel motor drive device 1 side, the first grip member 35 is moved toward the in-wheel motor drive device 1 side. On the other hand, the second gripping member 36 is moved toward the sliding member 32 side. At this time, the first cover member 33 of the wiring support structure 30 is curved toward the in-wheel motor drive device 1 side due to elastic deformation. Further, the second cover member 34 of the wiring support structure 30 contracts due to elastic deformation.

As the wirings 25 and 28 move toward the in-wheel motor drive device 1, the sliding member 32 elastically deforms on the first gripping member 35 side of the holding hole 32a toward the in-wheel motor drive device 1. At this time, the sliding member 32 suppresses friction with the wirings 25 and 28 by the lubricant in the holding hole 32a.

In this way, the wirings 25 and 28 held in the wiring support structure 30 are moved while sliding in the holding hole 32a of the sliding member 32 when a tensile force, a bending force, or the like is applied. In the wiring support structure 30, even if the wirings 25 and 28 move, the first cover member 33 and the second cover member 34 that cover the holding hole 32a are elastically deformed according to the movement of the wirings 25 and 28. It does not interfere with the movement of 28. Further, in the wiring support structure 30, since the sliding member 32 is covered by the first cover member 33 and the second cover member 34, the holding hole 32a is not exposed to the outside. That is, in the wiring support structure 30, the lubricant between the holding holes 32a and the wirings 25 and 28 is held for a long period of time, and iron powder and dust are not mixed from the outside, so that the wiring 25 is slid. -The wear of 28 is suppressed. Further, in the wiring support structure 30, the holding holes 32a are elastically deformed following the movement of the wirings 25 and 28, so that friction and stress generated in the wirings 25 and 28 are suppressed. As a result, even if a tensile force is generated on the wirings 25 and 28 due to the vertical movement of the wheels 101 and the horizontal movement due to steering, it is possible to suppress a decrease in the durability of the wirings 25 and 28.

Next, a second embodiment of the wiring support structure 30 according to the present invention will be described with reference to FIG. 7. The wiring support structure 30 according to the following embodiment is assumed to be applied in place of the wiring support structure 30 in the wiring support structure 30 shown in FIGS. 1 to 6, and the names, drawing numbers, and the like used in the description thereof. By using a reference numeral, the same thing will be referred to, and in the following embodiments, the same points as those of the embodiments already described will be omitted, and the differences will be mainly described.

As shown in FIG. 7, the wiring support structure 30 in the second embodiment includes a base member 31, a sliding member 32, a first cover member 33, a second cover member 34, and a first gripping member 35. A second gripping member 36, a first compression spring 38, and a second compression spring 39 are provided.

The first compression spring 38 and the second compression spring 39, which are elastic members, are members that hold the positions of the first grip member 35 and the second grip member 36 with respect to the base member 31. The first compression spring 38 is arranged between the base member 31 (sliding member 32) and the first gripping member 35. Further, the first compression spring 38 is arranged so that the holding hole 32a of the sliding member 32 and the gripping hole 35a of the first gripping member 35 are inside the first compression spring 38. One end of the first compression spring 38 in the expansion / contraction direction is connected to the first gripping member 35, and the other end is connected to the base member 31 (sliding member 32). The second compression spring 39 is arranged between the base member 31 (sliding member 32) and the second gripping member 36. Further, the second compression spring 39 is arranged so that the holding hole 32a of the sliding member 32 and the gripping hole 36a of the second gripping member 36 are inside the second compression spring 39. In the second compression spring, one side end in the expansion / contraction direction is connected to the second gripping member 36, and the other side end is connected to the base member 31 (sliding member 32).

Next, the movements of the first compression spring 38 and the second compression spring 39 accompanying the movements of the wirings 25 and 28 will be described with reference to FIGS. 8 and 9.

As shown in FIG. 8, as the wirings 25 and 28 move downward, the first gripping member 35 and the second gripping member 36 of the wiring support structure 30 move downward while maintaining the distance between them. Will be done. When the first gripping member 35 is moved away from the sliding member 32, the first compression spring 38 is stretched beyond its natural length to attract the first gripping member 35 to the sliding member 32. Generates the spring force of (see black arrow). When the second gripping member 36 is moved in a direction closer to the sliding member 32, the second compression spring 39 contracts more than its natural length, so that the second gripping member 36 is pulled away from the sliding member 32. Generates the spring force of (see black arrow).

As shown in FIG. 9, the first gripping member 35 is moved toward the in-wheel motor drive device 1 side as the wirings 25 and 28 move toward the in-wheel motor drive device 1 side. In the first compression spring 38, when the first gripping member 35 is moved to the in-wheel motor drive device 1, the in-wheel motor drive device 1 side of the first compression spring 38 is contracted, and the vehicle body side of the first compression spring 38 is moved. By being stretched, a spring force is generated in the direction of pulling the first gripping member 35 away from the in-wheel motor drive device 1 (see the black-painted arrow). That is, in the first compression spring 38 and the second compression spring 39, the wirings 25 and 28 are moved between the first gripping member 35 and the second gripping member 36 that are moved as the wirings 25 and 28 move. Generates a force in the direction of returning to the neutral position in the absence state.

In the wiring support structure 30 configured in this way, the wirings 25 and 28 move in the axial direction due to the downward movement and steering of the in-wheel motor drive device 1, and the wirings 25 and 28 are bent or twisted. Even if it occurs, the spring force of the first compression spring 38 and the second compression spring 39 is applied in the direction of returning the first gripping member 35 and the second gripping member 36 to the positions before the wirings 25 and 28 move. That is, in the wiring support structure 30, the spring force acts so as to maintain the positions of the wirings 25 and 28 in the neutral position, so that the contact between the wirings 25 and 28 and the peripheral members is suppressed. Further, in the wiring 25/28 support mechanism, excessive bending of the wiring 25/28 is suppressed by the spring force of the compression spring. As a result, even if a tensile force is generated on the wirings 25 and 28 due to the vertical movement of the wheels 101 and the horizontal movement due to steering, it is possible to suppress a decrease in the durability of the wirings 25 and 28.

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. include.

1 In-wheel motor drive device 25 Power line 28 Signal line 30 Wiring support structure 31 Base member 32 Sliding member 33 1st cover member 34 2nd cover member 35 1st grip member 36 2nd grip member 37 1st compression spring 38th 2 compression spring

Claims (6)

It is a wiring support structure that supports wiring from a wheel drive device that is movably provided with respect to the vehicle body frame.
A base member fixed to the vehicle component and
A sliding member that is supported by the base member and can slidably hold the wiring.
A gripping member that is arranged on both sides of the sliding member and grips the wiring, and a gripping member that grips the wiring.
A cover member that covers between the base member and each of the gripping members is provided.
A wiring support structure in which the cover member is deformed according to the movement of the wiring held by the sliding member. The wiring support structure according to claim 1, wherein the cover member is composed of a flexible member. The wiring support structure according to claim 1 or 2, wherein an elastic member is arranged between the sliding member and the gripping member, and the gripping member is supported by the sliding member via the elastic member. The wiring support structure according to claim 3, wherein the elastic member is composed of a compression spring. The wiring support structure according to any one of claims 1 to 3, wherein the sliding member is composed of an elastic member. The wiring support structure according to any one of claims 1 to 5, wherein a lubricant is sealed in a space surrounded by the grip member, the cover member, and the base member.

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