CN-121989583-A - Wheel, axle drive unit and vehicle comprising a wheel, axle drive unit

Abstract

A wheel includes a wheel body having an opening with a first axis extending in a first direction as a central axis, a wheel cover covering at least a portion of the opening, and a shaft connected to the wheel cover on one side thereof, the shaft extending along the first axis, the shaft passing through the wheel body. The shaft moves the shroud in a first direction or rotates the shroud about a first axis.

Inventors

• Jin Yuntai
• JIN DONGXIAN
• HUANG JINGMIN
• SHEN JUNZHI
• Pu Xiangmian
• HAN ZHENGMIN

Assignees

• 现代自动车株式会社
• 起亚株式会社

Dates

Publication Date

20260508

Application Date

20250213

Priority Date

20241104

Claims (20)

1. 1. A wheel, comprising: a wheel body having an opening, the wheel body having a first axis extending in a first direction as a central axis; a wheel cover covering at least a portion of the opening, and A shaft, one side of which is connected to the wheel cover, the shaft extending along the first axis, the shaft passing through the wheel body, Wherein the shaft is movable in the first direction relative to the wheel body or rotatable about the first axis.
2. 2. The wheel of claim 1, further comprising: A shaft driving unit connected to the other side of the shaft, the shaft driving unit being capable of driving the wheel cover, Wherein the shaft driving unit includes: A rotating motor capable of rotating the wheel cover and the shaft, and A gear connecting the rotating electric machine and the shaft to each other.
3. 3. The wheel of claim 2, wherein, The gear includes: a first gear connected to the rotating electrical machine, and A second gear connected to the first gear and the shaft, and The thickness of the first gear is greater than the thickness of the second gear.
4. 4. The wheel of claim 1, further comprising: A shaft driving unit connected to the other side of the shaft, the shaft driving unit being capable of driving the wheel cover, Wherein the shaft driving unit includes: an actuator connected to the shaft, the actuator being capable of moving the shaft in the direction of the first axis; A bracket for fixing the actuator to the wheel body, and A shaft support surrounding at least a portion of the shaft, the shaft support assisting in rotation of the shaft.
5. 5. The wheel of claim 4, wherein the wheel comprises a plurality of wheels, The shaft support includes a first shaft support, and The first shaft support includes: A first shaft support body, and A first bearing is disposed between the first shaft support body and the shaft.
6. 6. The wheel of claim 5, wherein, The first axle support further includes a first guide pin extending from the wheel body in the first direction, the first guide pin passing through the first axle support body.
7. 7. The wheel of claim 5, further comprising: a second gear for rotating the shaft, Wherein the shaft support further comprises a second shaft support, The second shaft support includes: a second shaft support body, and A second guide pin extending from the second shaft support body in the first direction, and The first shaft support and the second shaft support are disposed opposite each other with respect to the wheel body.
8. 8. The wheel of claim 7, wherein, The second shaft support further includes a second bearing disposed between the shaft and the second shaft support body, and The shaft has a groove in which at least a portion of the first and second bearings are disposed.
9. 9. The wheel of claim 7, wherein, The second shaft support further includes a third bearing disposed between the second guide pin and the second gear, and The second guide pin passes through at least a portion of the bracket.
10. 10. The wheel of claim 7, wherein, The shaft drive unit further includes an elastic member disposed between the second shaft support body and the bracket.
11. 11. The wheel of claim 4, wherein the wheel comprises a plurality of wheels, The actuator includes: an actuator body, and An actuator arm extends from the actuator body in the first direction, and one side of the actuator arm has a tapered shape such that the actuator arm and the shaft are in point contact with each other.
12. 12. The wheel of claim 4, wherein the wheel comprises a plurality of wheels, The shaft drive unit further includes an auxiliary bearing coupled to the shaft, the auxiliary bearing connecting the shaft and the actuator to each other, and The auxiliary bearing surrounds at least a portion of the actuator.
13. 13. The wheel of claim 2, wherein, The shaft driving unit is electrically connected to the controller, and The controller varies the rotational speed or steering of the wheel cover to variably control the relative rotational speeds of the wheel cover and the wheel body.
14. 14. The wheel of claim 4, wherein the wheel comprises a plurality of wheels, The shaft driving unit is electrically connected to the controller, and The controller controls the actuator to effect a mode transition between a first mode in which the wheel cover and the wheel body are in contact with each other and a second mode in which the wheel cover is spaced apart from the wheel body due to movement in the first direction.
15. 15. A vehicle, comprising: A vehicle body; A wheel coupled to the vehicle body, and A controller electrically connected to the wheel, Wherein the wheel comprises: A wheel body; A wheel cover covering at least a portion of the wheel body; A shaft, one side of which is connected to the wheel cover, the shaft extending in a first direction, the shaft passing through the wheel body, and A shaft driving unit connected to the other side of the shaft, the shaft driving unit being disposed opposite to the wheel cover with respect to the wheel body, The controller is electrically connected to the axle drive unit to move the wheel cover relative to the wheel body.
16. 16. The vehicle of claim 15, wherein, The shaft driving unit includes: a bracket coupled to the wheel body; a rotating electric machine fixed by the bracket, and A gear provided between the rotating electric machine and the shaft, the gear transmitting power of the rotating electric machine to the shaft, and The controller rotates the wheel cover by controlling the rotating motor.
17. 17. The vehicle of claim 16, wherein, The controller changes the rotational speed or steering of the wheel cover by controlling the rotating motor to variably control the relative rotational speeds of the wheel cover and the wheel body.
18. 18. The vehicle of claim 15, wherein, The shaft driving unit includes: A bracket coupled to the wheel body, and An actuator fixed by the bracket, the actuator being variable in length in the first direction, and The controller is electrically connected to the actuator and moves the wheel cover in the first direction by extending the actuator to change a distance between the wheel cover and the wheel body.
19. 19. The vehicle of claim 15, wherein, The wheel is a non-driving wheel that rotates in accordance with rotation of a driving wheel that receives driving force from the vehicle body, and the non-driving wheel does not directly receive driving force from the vehicle body.
20. 20. The vehicle of claim 18, wherein, The controller controls the actuator to effect a mode transition between a first mode in which the wheel cover and the wheel body are in contact with each other and a second mode in which the wheel cover is spaced apart from the wheel body due to movement in the first direction.

Description

Wheel, axle drive unit and vehicle comprising a wheel, axle drive unit Cross Reference to Related Applications The present application claims the priority rights of korean patent application No. 10-2024-0154506 filed on 11.4.2024 to the korean intellectual property office, the disclosure of which is incorporated herein by reference in its entirety. Technical Field The present disclosure relates to a wheel, a shaft driving unit, and a vehicle including the wheel, the shaft driving unit, which are capable of improving running performance of the vehicle using a wheel cover. Background With the development of environment-friendly electric vehicles, electric vehicles have applied wheels having small openings and flat shapes to improve full electric endurance mileage (AER), and vehicles other than electric vehicles have been increasingly applied wheels having small openings and flat shapes to improve fuel efficiency. The size of the opening of the wheel may be related to brake cooling performance and aerodynamic performance. When the opening is reduced, the amount of air flowing into the wheel from the outside may be reduced, so that aerodynamic performance may be improved. However, the internal temperature of the wheel may rise, and the cooling performance of the brake may be lowered. In contrast, when the opening is enlarged, the amount of air flowing into the wheel from the outside may increase, so that the cooling performance of the brake may be improved. However, aerodynamic performance may decrease, thereby decreasing the fuel efficiency or AER of the vehicle. Therefore, there is a need for a wheel having a structure capable of controlling the amount of air flowing into the wheel from the outside to cool the brake as needed. Disclosure of Invention An aspect of the present disclosure provides a wheel having a structure capable of improving aerodynamic performance by controlling rotational speed and steering of a wheel cover. Another aspect of the present disclosure provides a wheel having a structure capable of improving aerodynamic performance and improving brake cooling performance by controlling a distance between a wheel cover and a wheel body. Another aspect of the present disclosure provides a wheel having a structure capable of improving a brake cooling performance by separating a wheel cover from a wheel body as needed. According to an aspect of the present disclosure, there is provided a wheel including a wheel body having an opening with a first axis extending in a first direction as a central axis, a wheel cover covering at least a portion of the opening, and a shaft having one side connected to the wheel cover, the shaft extending along the first axis, the shaft passing through the wheel body. The shaft may move the shroud in a first direction or rotate the shroud about a first axis. The wheel may further include a shaft driving unit connected to the other side of the shaft, the shaft driving unit being capable of driving the wheel cover. The shaft driving unit may include a rotating electric machine capable of rotating the wheel cover and the shaft, and a gear connecting the rotating electric machine and the shaft to each other. The gears may include a first gear coupled to the rotary motor and a second gear coupled to the first gear and the shaft. The thickness of the first gear may be greater than the thickness of the second gear. The wheel may further include a shaft driving unit connected to the other side of the shaft, the shaft driving unit being capable of driving the wheel cover. The shaft driving unit may include an actuator connected to the shaft, the actuator being capable of moving the shaft in a direction of the first axis, a bracket fixing the actuator to the wheel body, and a shaft support surrounding at least a portion of the shaft, the shaft support assisting rotation of the shaft. The shaft support may include a first shaft support. The first shaft support may include a first shaft support body, and a first bearing disposed between the first shaft support body and the shaft. The first shaft support may further include a first guide pin extending from the wheel body in a first direction, the first guide pin passing through the first shaft support body. The wheel may further include a second gear that rotates the shaft. The shaft support may further comprise a second shaft support. The second shaft support may include a second shaft support body, and a second guide pin extending from the second shaft support body in the first direction. The first and second axle supports may be disposed opposite each other relative to the wheel body. The second shaft support may further include a second bearing disposed between the shaft and the second shaft support body. The shaft may have a recess in which at least a portion of the first and second bearings are disposed. The second shaft support may further include a third bearing disposed between the second guide pin and the second gear. The