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WO-2026091952-A1 - STEERING DEVICE OF VEHICLE AND VEHICLE

WO2026091952A1WO 2026091952 A1WO2026091952 A1WO 2026091952A1WO-2026091952-A1

Abstract

A vehicle (100), comprising steering devices (10) of the vehicle (100). Each steering device (10) comprises a steering knuckle (3), a steering assembly and a limiting portion (5), wherein the steering assembly is configured to be in transmission connection with the steering knuckle (3), so as to realize the steering of a wheel (20); and the limiting portion (5) is connected to the steering assembly, and the limiting portion (5) is configured to restrict the steering assembly from rotating along with the wheel (20).

Inventors

  • ZHAO, GAOMING
  • CAI, Yongchao
  • MIAO, Kunyang
  • WANG, ZHENFENG
  • LI, Linfeng

Assignees

  • 比亚迪股份有限公司
  • 比亚迪汽车工业有限公司

Dates

Publication Date
20260507
Application Date
20250917
Priority Date
20241030

Claims (20)

  1. A vehicle steering device (10), wherein the steering device (10) comprises: Steering knuckle (3); Steering assembly, the steering assembly being drivenly connected to the steering knuckle (3) to achieve steering of the wheels (20); and A limiting part (5) is connected to the steering assembly and is used to limit the steering assembly from rotating with the wheel (20).
  2. According to claim 1, the vehicle steering device (10) includes a steering mechanism (4), the steering mechanism (4) includes a steering housing (41) and a steering transmission member (42), the steering transmission member (42) is disposed in the steering housing (41), the portion of the steering knuckle (3) extending into the steering housing (41) is driven by the steering transmission member (42), and one end of the limiting portion (5) is rotatably connected to the steering housing (41).
  3. According to claim 2, the vehicle steering device (10) further includes a steering motor (6) mounted on the steering housing (41), and the steering motor (6) is used to drive the steering transmission member (42) to actuate so as to drive the steering knuckle (3) to steer.
  4. The steering device (10) of the vehicle according to claim 2 or 3, wherein the steering device (10) further comprises: A first wishbone (1), one end of which is rotatably connected to the steering knuckle (3), and the other end of which is adapted to be rotatably connected to the vehicle body; and The second fork arm (2) is spaced apart from the first fork arm (1) in the vertical direction of the vehicle. One end of the second fork arm (2) is rotatably connected to the steering knuckle (3), and the other end of the second fork arm (2) is adapted to be rotatably connected to the subframe.
  5. The vehicle steering device (10) according to claim 4, wherein the other end of the limiting part (5) is rotatably connected to at least one of the vehicle body and the subframe.
  6. According to claim 5, the vehicle steering device (10) includes a first traction arm (51) and a second traction arm (52), the first traction arm (51) being located on the side of the second traction arm (52) away from the center of the vehicle, the first traction arm (51) having a first connecting cylinder (511) and a first mounting cylinder (512), the second traction arm (52) having a second connecting cylinder (521) and a second mounting cylinder (522), both the first connecting cylinder (511) and the second connecting cylinder (521) being rotatably connected to the steering housing (41), the first mounting cylinder (512) being rotatably connected to the vehicle body or the subframe, and the second mounting cylinder (522) being rotatably connected to the vehicle body or the subframe.
  7. According to claim 6, the steering device (10) of the vehicle is wherein the rotational connection center point between the first fork arm (1) and the steering knuckle (3) is the first center point, the rotational connection center point between the second fork arm (2) and the steering knuckle (3) is the second center point, and the line connecting the first center point and the second center point is the main pin axis. The line connecting the center of the first connecting cylinder (511) and the center of the first mounting cylinder (512), and the line connecting the center of the second connecting cylinder (521) and the center of the second mounting cylinder (522) intersect at the same point on the main pin axis.
  8. According to claim 6 or 7, the steering device (10) of the vehicle includes a first arm first segment (513) and a first arm second segment (514), a first connecting cylinder (511) is disposed on the first arm first segment (513), a first mounting cylinder (512) is disposed on the first arm second segment (514), and the first arm second segment (514) is bent away from the second traction arm (52) relative to the first arm first segment (513).
  9. The steering device (10) of the vehicle according to any one of claims 6-8, wherein the second traction arm (52) includes a first segment (523) of the second arm and a second segment (524) of the second arm, the second connecting cylinder (521) is disposed on the first segment (523) of the second arm, the second mounting cylinder (522) is disposed on the second segment (524) of the second arm, and the second segment (524) of the second arm is bent away from the first traction arm (51) relative to the first segment (523).
  10. The vehicle steering device (10) according to claim 4, wherein the other end of the limiting part (5) is rotatably connected to the second fork arm (2).
  11. According to claim 10, the steering device (10) of the vehicle is provided with a pivot (7) on the second fork arm (2), the pivot (7) being rotatable relative to the second fork arm (2), the limiting part (5) including at least one slide rail structure (53), the slide rail structure (53) including a first slide tube (531) and a second slide tube (532), the first slide tube (531) and the second slide tube (532) being at least partially nested, the first slide tube (531) being rotatably connected to the steering housing (41), and the second slide tube (532) being rotatably connected to the pivot (7) to achieve rotatable connection with the second fork arm (2).
  12. According to claim 11, the vehicle steering device (10) is provided, wherein there are two slide rail structures (53), wherein the second slide tube (532) of one slide rail structure (53) is adapted to be rotatably connected to one end of the rotating shaft (7) extending out of the second fork arm (2), and the second slide tube (532) of the other slide rail structure (53) is adapted to be rotatably connected to the other end of the rotating shaft (7) extending out of the second fork arm (2).
  13. The vehicle steering device (10) according to claim 12, wherein the second slide tubes (532) of the two slide rail structures (53) are fixedly connected by a connecting rod (535).
  14. According to any one of claims 11-13, the steering device (10) of the vehicle is wherein the second fork arm (2) has a fork arm hole through both ends, the pivot (7) passes through the fork arm hole and extends outward from the fork arm hole, a fork arm bearing (71) is provided between the fork arm hole and the pivot (7), and a seal (72) is provided at both ends of the fork arm hole, and the pivot (7) passes through the seal (72).
  15. The steering device (10) of the vehicle according to any one of claims 4-14, wherein one of the second fork arm (2) and the steering housing (41) is provided with a sliding groove, and the other is provided with a sliding fork, the sliding fork being slidably engaged with the sliding groove.
  16. The steering device (10) of the vehicle according to any one of claims 4-14, wherein the second fork arm (2) is provided with a groove extending along the height direction of the vehicle, a slider is provided in the groove, the slider is capable of sliding along the groove, and a pin is provided on the slider, the pin being connected to the steering housing (41) via a double ball joint connecting rod.
  17. The vehicle steering device (10) according to claim 3, wherein the steering transmission member (42) comprises: The first gear (421), the steering motor (6) is used to drive the first gear (421) to rotate; and The second gear (422) is fixed to the steering knuckle (3) and meshes with the first gear (421) for transmission. Both the first gear (421) and the second gear (422) are sector gears.
  18. The steering device (10) of the vehicle according to any one of claims 2-17, wherein the wheel (20) includes a rim, and the steering mechanism (4) is at least partially located inside the rim.
  19. The vehicle steering device (10) according to any one of claims 1-18, wherein when the steering assembly drives the steering knuckle (3) to turn, it drives the wheel (20) to turn, and the steering angle range of the wheel (20) reaches a preset angle value, the preset angle value being not less than 120°.
  20. The vehicle steering device (10) according to claim 19, wherein, When the wheel (20) is in the initial position, the axis of the wheel (20) is parallel to the left and right direction of the vehicle; The wheel (20) can turn from the initial position along the first direction to the angle between the axis of the wheel (20) and the left-right direction of the vehicle, which is the first included angle; The wheel (20) can turn from the initial position along the second direction to the angle between the axis of the wheel (20) and the left-right direction of the vehicle, which is the second included angle; Wherein, the first direction and the second direction are opposite directions, the first included angle is greater than the second included angle, and the sum of the angle values of the first included angle and the second included angle is equal to the preset angle value.

Description

Vehicle steering system and vehicle Cross-reference of related applications This application claims priority to Chinese Patent Application No. 202411539148.2, filed on October 30, 2024, entitled "Steering Device for Vehicle and Vehicle", the entire contents of which are incorporated herein by reference. Technical Field This application relates to the field of vehicle technology, and more specifically, to a steering device for a vehicle and a vehicle having the steering device. Background Technology The vehicle has a steering system, which includes a steering knuckle, a steering mechanism, and a steering motor. The steering motor drives the steering knuckle to steer via the steering mechanism, and the steering knuckle steers the wheels. In related technologies, when the wheels bounce up and down, the steering mechanism tends to rotate, resulting in a small range of wheel steering angles, which cannot meet the user's demand for large steering angles. Therefore, there is room for improvement. Summary of the Invention This application aims to at least partially solve one of the aforementioned technical problems in the related art. To this end, this application proposes a vehicle steering device capable of achieving a wide range of wheel steering angle adjustments. This application also proposes a vehicle having the aforementioned steering device. The vehicle steering device according to an embodiment of this application includes: a steering knuckle, a steering assembly, and a limiting part. The steering assembly is used to drively connect with the steering knuckle to realize wheel steering. The limiting part is connected to the steering assembly and is used to restrict the steering assembly from rotating with the wheel. According to the embodiment of this application, the steering device restricts the excessive rotation of the steering mechanism by setting a limiting part, and restricts the steering component from rotating with the wheel, thereby realizing a wide range of wheel steering angle adjustment, which can meet the user's needs for a large wheel steering angle. According to some embodiments of this application, the steering assembly includes a steering mechanism, the steering mechanism includes a steering housing and a steering transmission member, the steering transmission member is disposed in the steering housing, the portion of the steering knuckle extending into the steering housing is driven by the steering transmission member, and one end of the limiting portion is rotatably connected to the steering housing. According to some embodiments of this application, the steering assembly further includes a steering motor mounted on the steering housing, the steering motor being used to drive the steering transmission element to actuate and steer the steering knuckle. According to some embodiments of this application, the steering device further includes: a first wishbone and a second wishbone, one end of the first wishbone being rotatably connected to the steering knuckle, and the other end of the first wishbone being adapted to be rotatably connected to the vehicle body; the second wishbone and the first wishbone are spaced apart in the vertical direction of the vehicle, one end of the second wishbone being rotatably connected to the steering knuckle, and the other end of the second wishbone being adapted to be rotatably connected to the subframe. According to some embodiments of this application, the other end of the limiting portion is rotatably connected to at least one of the vehicle body and the subframe. According to some embodiments of this application, the limiting part includes a first traction arm and a second traction arm. The first traction arm is located on the side of the second traction arm away from the center of the vehicle. The first traction arm has a first connecting cylinder and a first mounting cylinder. The second traction arm has a second connecting cylinder and a second mounting cylinder. The first connecting cylinder and the second connecting cylinder are both rotatably connected to the steering housing. The first mounting cylinder is rotatably connected to the vehicle body or the subframe. The second mounting cylinder is rotatably connected to the vehicle body or the subframe. According to some embodiments of this application, the rotational connection center point between the first fork arm and the steering knuckle is the first center point, the rotational connection center point between the second fork arm and the steering knuckle is the second center point, and the line connecting the first center point and the second center point is the kingpin axis; the line connecting the center of the first connecting cylinder and the center of the first mounting cylinder, and the line connecting the center of the second connecting cylinder and the center of the second mounting cylinder intersect at the same point on the kingpin axis. According to some embodiments of this application,