Steering system, chassis assembly and vehicle

Abstract

The invention discloses a steering system, a chassis assembly and a vehicle, the steering system comprises a wheel assembly, the wheel assembly comprises a wheel and a hub motor, the hub motor is arranged in the wheel, and the hub motor is used for driving the wheel to rotate; the steering knuckles are arranged on the wheels, the transmission mechanisms are connected between the hub motors and the steering knuckles, and the hub motors can further be used for driving the wheels to steer through the transmission mechanisms and the steering knuckles. According to the steering system, the wheel is driven to steer through the hub motor, the number of parts on the vehicle can be reduced, on one hand, the weight of the vehicle can be reduced, the endurance of the vehicle can be improved, the production cost of the vehicle can be reduced, on the other hand, the arrangement space on the lower side of the vehicle can be released, the space of a cabin can be larger, and besides, the space of the cabin can be saved. The transmission distance between the hub motor and the wheel is short, and the response speed of the hub motor to wheel steering driving can be increased.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a steering system, a chassis assembly and a vehicle. Background Art

[0002] With the development of vehicle technology, driving components are provided on the vehicle to drive the steering of the wheels to realize functions such as power steering, assisted driving, lane keeping or active avoidance. In related technologies, a steering motor is separately provided on the vehicle to drive the steering of the wheels, resulting in a large number of components on the vehicle and a large weight of the vehicle, which affects the vehicle's endurance. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention is to propose a steering system, which can reduce the number of components on a vehicle.

[0004] The present invention also provides a chassis assembly having the steering system.

[0005] The present invention also provides a vehicle having the chassis assembly.

[0006] According to the first aspect of the present invention, the steering system includes: a wheel assembly, the wheel assembly includes a wheel and a hub motor, the hub motor is arranged in the wheel, and the hub motor is used to drive the wheel to rotate; a steering knuckle and a transmission mechanism, the steering knuckle is arranged on the wheel, the transmission mechanism is connected between the hub motor and the steering knuckle, and the hub motor can also be used to drive the wheel to steer through the transmission mechanism and the steering knuckle.

[0007] According to the steering system of the first aspect of the present invention, the number of components on the vehicle can be reduced by driving the wheel steering through the hub motor. On the one hand, the weight of the vehicle can be reduced, the vehicle's endurance can be improved, and the vehicle's production cost can be reduced. On the other hand, the layout space on the lower side of the vehicle can be freed up, so that the cabin space can be larger. In addition, the transmission distance between the hub motor and the wheel is short, which can improve the response speed of the hub motor to the wheel steering drive.

[0008] According to some embodiments of the present invention, the transmission mechanism includes: a main transmission member, which is connected to the hub motor; a first transmission member, which is connected between the main transmission member and the steering knuckle, and the main transmission member drives the wheel to rotate right through the first transmission member and the steering knuckle; and a second transmission member, which is connected between the main transmission member and the steering knuckle, and the main transmission member drives the wheel to rotate left through the second transmission member and the steering knuckle.

[0009] According to some embodiments of the present invention, the main transmission member is configured to drive the first transmission member to rotate along a first direction and drive the second transmission member to rotate along a second direction, and the first direction and the second direction are opposite.

[0010] According to some embodiments of the present invention, the main transmission member, the first transmission member and the second transmission member are all bevel gears, the main transmission member is coaxially connected to the hub motor, and the first transmission member and the second transmission member are both in transmission cooperation with the main transmission member.

[0011] According to some embodiments of the present invention, the first transmission member and the second transmission member are respectively arranged at the upper and lower ends of the main transmission member.

[0012] According to some embodiments of the present invention, the main transmission member is a worm gear, the first transmission member and the second transmission member are both worms, the main transmission member is coaxially connected to the hub motor, and the first transmission member and the second transmission member are respectively engaged with the main transmission member.

[0013] According to some embodiments of the present invention, the first transmission member and the second transmission member are respectively arranged at the front and rear sides of the main transmission member.

[0014] According to some embodiments of the present invention, the main transmission member, the first transmission member and the second transmission member are all magnetic gears, the main transmission member is coaxially connected to the hub motor, the first transmission member and the second transmission member are respectively magnetically matched with the main transmission member, and the rotation axis of the first transmission member and the rotation axis of the second transmission member are perpendicular to the rotation axis of the main transmission member.

[0015] According to some embodiments of the present invention, the first transmission member and the second transmission member are respectively arranged at the front and rear sides of the main transmission member.

[0016] According to some embodiments of the present invention, the steering knuckle includes: a steering body, a first steering part and a second steering part, the steering body is annular and is arranged around the axis of the wheel, the first steering part and the second steering part are arranged at intervals on the steering body, the first transmission member is suitable for being connected to the first steering part, and the second transmission member is suitable for being connected to the second steering part.

[0017] According to some embodiments of the present invention, the steering system further comprises: a first clutch connected between the first transmission member and the first steering portion; and / or a second clutch connected between the second transmission member and the second steering portion.

[0018] According to some embodiments of the present invention, the first steering portion is formed with a first mounting hole, and at least a portion of the first clutch is disposed in the first mounting hole; and / or the second steering portion is formed with a second mounting hole, and at least a portion of the second clutch is disposed in the second mounting hole.

[0019] According to some embodiments of the present invention, the first clutch is an electromagnetic clutch; and / or the second clutch is an electromagnetic clutch.

[0020] The chassis assembly according to the second aspect of the present invention comprises: a chassis; the steering system according to the first aspect of the present invention; a suspension system, wherein the suspension system comprises: an upper swing arm and a lower swing arm, wherein the upper swing arm and the lower swing arm are respectively connected between the steering knuckle and the chassis.

[0021] According to the chassis assembly of the second aspect of the present invention, by providing the steering system according to the first aspect of the present invention, the number of components can be reduced, and the production cost and design difficulty can be lowered.

[0022] A vehicle according to a third aspect of the present invention comprises: the steering system according to the first aspect of the present invention or the chassis assembly according to the second aspect of the present invention.

[0023] The vehicle according to the third aspect of the present invention can improve cruising range, reduce production costs, and increase the cabin space in the vehicle.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of a chassis assembly according to an embodiment of the present invention;

[0026] Figure 2 yes Figure 1 a sectional view of the chassis assembly shown in ;

[0027] Figure 3 yes Figure 1 A schematic diagram of another angle of the chassis assembly shown in FIG.

[0028] Figure 4 yes Figure 1 A schematic diagram of another angle of the chassis assembly shown in ;

[0029] Figure 5 yes Figure 4 A cross-sectional view of the chassis assembly in the AA direction shown in FIG.

[0030] Figure 6 yes Figure 1An exploded view of the transmission mechanism, the first clutch and the second clutch shown in FIG.

[0031] Figure 7 yes Figure 6 An exploded view of the first electromagnetic member shown in ;

[0032] Figure 8 yes Figure 1 A schematic diagram of the first clutch shown in ;

[0033] Fig. 9 yes Figure 8 A cross-sectional view along the BB direction is shown in FIG.

[0034] Reference numerals:

[0035] 1000, chassis assembly;

[0036] 100. Steering system;

[0037] 10. Wheel assembly; 11. Wheel; 12. Hub motor;

[0038] 20. Steering knuckle; 21. Steering body; 22. First steering part; 221. First mounting hole; 23. Second steering part; 231. Second mounting hole; 24. First shaft; 25. Second shaft; 26. Kingpin;

[0039] 30. Transmission mechanism; 31. Main transmission member; 32. First transmission member; 33. Second transmission member;

[0040] 40, first clutch; 41, first electromagnetic member; 411, first housing; 412, first coil; 42, first clutch member;

[0041] 50. Second clutch; 51. Second electromagnetic member; 52. Second clutch member;

[0042] 200. Suspension system;

[0043] 210, upper swing arm;

[0044] 220, lower arm;

[0045] 230. Shock absorber. DETAILED DESCRIPTION

[0046] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0047] Reference below Figure 1-Figure 9A steering system 100 according to an embodiment of a first aspect of the present invention is described.

[0048] like Figure 1-Figure 5 As shown, the steering system 100 according to the first embodiment of the present invention includes: a wheel assembly 10 , a steering knuckle 20 and a transmission mechanism 30 .

[0049] Specifically, the wheel assembly 10 includes a wheel 11 and a hub motor 12. The hub motor 12 is disposed in the wheel 11 and is used to drive the wheel 11 to rotate. The steering knuckle 20 is disposed on the wheel 11. The transmission mechanism 30 is connected between the hub motor 12 and the steering knuckle 20. The hub motor 12 can also be used to drive the wheel 11 to steer through the transmission mechanism 30 and the steering knuckle 20.

[0050] Among them, the steering knuckle 20 is rotatably connected to the chassis through the kingpin 26. During the driving of the vehicle, the hub motor 12 drives the wheel 11 to rotate. When the vehicle is driving in a straight line, the connection between the vehicle control transmission mechanism 30 and the steering knuckle 20 is interrupted. When the vehicle needs to turn, the vehicle control transmission mechanism 30 is connected to the steering knuckle 20, and the hub motor 12 drives the wheel 11 to turn through the transmission mechanism 30.

[0051] When the driver is steering the vehicle, the hub motor 12 drives the wheel 11 to steer through the transmission mechanism 30, which can provide steering assistance. When the vehicle is in the intelligent assisted driving state, the hub motor 12 drives the wheel 11 to steer through the transmission mechanism 30, which can enable the vehicle to automatically adjust the driving direction, thereby realizing vehicle-related driving assistance functions, such as lane keeping, active avoidance and other functions.

[0052] By driving the wheel 11 to steer via the wheel hub motor 12, a conventional steering motor and the components required for arranging the steering motor can be omitted, thereby reducing the number of components on the vehicle. On the one hand, the weight of the vehicle can be reduced and the vehicle's endurance can be improved. On the other hand, the production cost of the vehicle can be reduced.

[0053] At the same time, the distance between the wheel hub motor 12 and the steering knuckle 20 on the wheel 11 is small. When the wheel hub motor 12 and the steering knuckle 20 are connected by the transmission mechanism 30, the transmission mechanism 30 can be arranged in the peripheral area of ​​the wheel 11, and the connecting rod on the chassis in the conventional steering system 100 can be omitted. In this way, the lower side of the vehicle can have more layout space, and the space of the cabin can be made larger when the vehicle is designed. When the wheel hub motor 12 is connected to the steering knuckle 20 through the transmission mechanism 30, the transmission distance between the wheel hub motor 12 and the steering knuckle 20 is short, which can improve the response speed of the wheel hub motor 12 to the steering drive of the wheel 11.

[0054] According to the steering system 100 of the first aspect of the present invention, the number of components on the vehicle can be reduced by driving the wheel 11 to steer through the hub motor 12. On the one hand, the weight of the vehicle can be reduced, the vehicle's endurance can be improved, and the vehicle's production cost can be reduced. On the other hand, the layout space on the lower side of the vehicle can be freed up, so that the cabin space can be larger. In addition, the transmission distance between the hub motor 12 and the wheel 11 is short, which can improve the response speed of the hub motor 12 to the steering drive of the wheel 11.

[0055] In some embodiments of the present invention, Figure 1 , Figure 2 and Figure 6 As shown, the transmission mechanism 30 includes: a main transmission member 31 , a first transmission member 32 and a second transmission member 33 .

[0056] Specifically, the main transmission member 31 is connected to the hub motor 12, the first transmission member 32 is connected between the main transmission member 31 and the steering knuckle 20, the main transmission member 31 drives the wheel 11 to rotate right through the first transmission member 32 and the steering knuckle 20, the second transmission member 33 is connected between the main transmission member 31 and the steering knuckle 20, the main transmission member 31 drives the wheel 11 to rotate left through the second transmission member 33 and the steering knuckle 20.

[0057] In this way, during the design process, the parameters of the wheel hub motor 12 driving the wheel 11 to rotate to the right can be adjusted by adjusting various parameters in the connection between the main transmission member 31, the first transmission member 32 and the steering knuckle 20. The parameters of the wheel hub motor 12 driving the wheel 11 to rotate to the left can be adjusted by adjusting various parameters in the connection between the main transmission member 31, the second transmission member 33 and the steering knuckle 20. Therefore, during the design process, the correlation between the transmission relationship of the wheel hub motor 12 driving the wheel 11 to the left and rotating to the left is low, which can reduce the design difficulty.

[0058] In some embodiments of the present invention, the main transmission member 31 is configured to drive the first transmission member 32 to rotate in a first direction and drive the second transmission member 33 to rotate in a second direction, and the first direction and the second direction are opposite. In this way, the first transmission member 32 and the second transmission member 33 can respectively drive the steering knuckle 20 to rotate in two opposite directions through the same-direction transmission, thereby realizing the rotation of the wheel 11 in the left and right directions. It can be understood that the structure of the same-direction transmission is relatively simple, and in the design process, the difference in the rotation direction of the first transmission member 32 and the second transmission member 33 that needs to be achieved is relatively obvious, and it is not easy to make mistakes in the design process, thereby further reducing the design difficulty.

[0059] In some embodiments of the present invention, Figure 1 , Figure 5 and Figure 6As shown, the main transmission member 31 , the first transmission member 32 and the second transmission member 33 are all bevel gears, the main transmission member 31 is coaxially connected to the hub motor 12 , and the first transmission member 32 and the second transmission member 33 are both in transmission cooperation with the main transmission member 31 .

[0060] It can be understood that in the bevel gear transmission system, the rotation axis of the main transmission member 31 is perpendicular to the rotation axis of the first transmission member 32 and the second transmission member 33. In this way, the direction of the force of the hub motor 12 can be changed, making it easier for the first transmission member 32 and the second transmission member 33 to transmit the force to the steering knuckle 20. In addition, the bevel gear transmission occupies a smaller space and the transmission is relatively smooth, which can further increase the layout space on the lower side of the vehicle and reduce the noise during vehicle driving.

[0061] In some embodiments of the present invention, Figure 1 , Figure 5 and Figure 6 As shown, the first transmission member 32 and the second transmission member 33 are respectively arranged at the upper and lower ends of the main transmission member 31. It can be understood by those skilled in the art that at the upper and lower ends of the main transmission member 31 of the bevel gear, the movement direction of the meshing point of the main transmission member 31 and the first transmission member 32 is opposite to the movement direction of the meshing point of the main transmission member 31 and the second transmission member 33, so that the main transmission member 31 of the bevel gear can drive the first transmission member 32 and the second transmission member 33 to rotate in opposite directions respectively, and in the bevel gear transmission system, the rotation axes of the first transmission member 32 and the second transmission member 33 are extended up and down, that is, the first transmission member 32 and the second transmission member 33 rotate to the right or left respectively, thereby, the first transmission member 32 and the second transmission member 33 can drive the steering knuckle 20 to rotate to the right or left, so that the hub motor 12 drives the wheel 11 to turn right and left through the transmission mechanism 30.

[0062] In some embodiments of the present invention, the main transmission member 31 is a worm gear, the first transmission member 32 and the second transmission member 33 are both worms, the main transmission member 31 is coaxially connected to the hub motor 12, and the first transmission member 32 and the second transmission member 33 are respectively engaged with the main transmission member 31.

[0063] It can be understood that in the worm gear transmission system, the rotation axis of the main transmission member 31 is perpendicular to the rotation axis of the first transmission member 32 and the second transmission member 33. In this way, the direction of the force of the hub motor 12 can be changed, making it easier for the first transmission member 32 and the second transmission member 33 to transmit the force to the steering knuckle 20. In addition, the worm gear transmission occupies a smaller space and the transmission is relatively smooth, which can further increase the layout space on the lower side of the vehicle and reduce the noise during vehicle driving.

[0064] In some embodiments of the present invention, the first transmission member 32 and the second transmission member 33 are respectively arranged at the front and rear sides of the main transmission member 31 .

[0065] It is understandable to those skilled in the art that the transmission directions of the main transmission member 31 are opposite on the front and rear sides of the worm gear's main transmission member 31, so that the worm gear's main transmission member 31 drives the first transmission member 32 and the second transmission member 33 to rotate, and the rotation directions of the first transmission member 32 and the second transmission member 33 are also opposite, and the rotation axes of the first transmission member 32 and the second transmission member 33 both extend up and down, thereby, the first transmission member 32 and the second transmission member 33 can drive the steering knuckle 20 to rotate right or left, thereby realizing that the hub motor 12 drives the wheel 11 to turn right and left through the transmission mechanism 30.

[0066] In some embodiments of the present invention, the main transmission member 31, the first transmission member 32 and the second transmission member 33 are all magnetic gears, the main transmission member 31 is coaxially connected to the hub motor 12, the first transmission member 32 and the second transmission member 33 are respectively magnetically matched with the main transmission member 31, and the rotation axis of the first transmission member 32 and the rotation axis of the second transmission member 33 are perpendicular to the rotation axis of the main transmission member 31.

[0067] In this way, the direction of the force of the hub motor 12 can be changed, making it easier for the first transmission member 32 and the second transmission member 33 to transmit the force to the steering knuckle 20, and the magnetic gear transmission does not produce physical contact, and the main transmission member 31, the first transmission member 32 and the second transmission member 33 will not produce physical wear during the transmission process, which can reduce the maintenance of the main transmission member 31, the first transmission member 32 and the second transmission member 33 during the use of the vehicle. At the same time, the main transmission member 31, the first transmission member 32 and the second transmission member 33 will not collide or knock with each other, which can reduce the noise during the driving of the vehicle.

[0068] In some embodiments of the present invention, the first transmission member 32 and the second transmission member 33 are respectively arranged at the front and rear sides of the main transmission member 31 .

[0069] It is understandable to those skilled in the art that the transmission directions of the main transmission member 31 are opposite on the front and rear sides of the main transmission member 31 of the magnetic gear, so that the main transmission member 31 of the worm drives the first transmission member 32 and the second transmission member 33 to rotate, and the rotation directions of the first transmission member 32 and the second transmission member 33 are also opposite, and the rotation axes of the first transmission member 32 and the second transmission member 33 extend up and down, thereby, the first transmission member 32 and the second transmission member 33 can drive the steering knuckle 20 to rotate right or left, thereby realizing that the hub motor 12 drives the wheel 11 to turn right and left through the transmission mechanism 30.

[0070] In some embodiments of the present invention, Figure 1 and Figure 2As shown, the steering knuckle 20 includes: a steering body 21, a first steering portion 22 and a second steering portion 23. The steering body 21 is annular and arranged around the axis of the wheel 11. The first steering portion 22 and the second steering portion 23 are arranged at intervals on the steering body 21. The first transmission member 32 is suitable for being connected to the first steering portion 22, and the second transmission member 33 is suitable for being connected to the second steering portion 23.

[0071] When the vehicle needs to turn right, the vehicle controls the first transmission member 32 to be connected to the first steering part 22, and controls the second transmission member 33 to be disconnected from the second steering part 23. The first transmission member 32 drives the wheel 11 to rotate right through the first steering part 22 and the steering body 21, thereby realizing that the hub motor 12 drives the wheel 11 to rotate right.

[0072] When the vehicle needs to turn left, the vehicle controls the first transmission member 32 to disconnect from the first steering part 22, and controls the second transmission member 33 to be connected to the second steering part 23. The second transmission member 33 drives the wheel 11 to rotate left through the second steering part 23 and the steering body 21, thereby realizing that the hub motor 12 drives the wheel 11 to rotate left.

[0073] Among them, by setting the first steering part 22 and the second steering part 23, it is convenient to realize the connection between the first transmission member 32 and the second transmission member 33 and the steering knuckle 20. During the product design process, the position or size parameters of the first steering part 22 and the second steering part 23 can be adjusted to meet more product design needs.

[0074] In some embodiments of the present invention, Figure 1 , Figure 2 and Figure 5 As shown, the steering system 100 also includes: a first clutch 40, which is connected between the first transmission member 32 and the first steering portion 22. By setting the first clutch 40, the vehicle can control the connection state of the first transmission member 32 and the first steering portion 22, wherein the first clutch 40 can be an electromagnetic clutch, a hydraulic clutch or a pneumatic clutch.

[0075] In some embodiments of the present invention, Figure 1 , Figure 2 and Figure 5 As shown, the steering system 100 further includes: a second clutch 50, and the second clutch 50 is connected between the second transmission member 33 and the second steering portion 23. By setting the second clutch 50, the vehicle can control the connection state of the second transmission member 33 and the second steering portion 23, wherein the second clutch 50 can be an electromagnetic clutch, a hydraulic clutch or a pneumatic clutch.

[0076] In some embodiments of the present invention, Figure 1 , Figure 2 and Figure 5As shown, the first steering portion 22 is formed with a first mounting hole 221, and at least a portion of the first clutch 40 is disposed in the first mounting hole 221. That is, the first clutch 40 may be partially disposed in the first mounting hole 221, or the first clutch 40 may be entirely disposed in the first mounting hole 221. By providing the first mounting hole 221, it is convenient to realize the connection between the first transmission member 32, the first steering portion 22, and the first clutch 40. Moreover, at least a portion of the first clutch 40 is disposed in the first mounting hole 221, which can reduce the space occupied by the first clutch 40 and further increase the layout space on the lower side of the vehicle.

[0077] Preferably, the first transmission member 32 is a bevel gear, and the first transmission member 32 is connected to the first clutch 40 through the first shaft 24 .

[0078] In some embodiments of the present invention, Figure 1 , Figure 2 and Figure 5 As shown, the second steering portion 23 is formed with a second mounting hole 231, and at least a portion of the second clutch 50 is disposed in the second mounting hole 231. That is, the second clutch 50 may be partially disposed in the second mounting hole 231, or the second clutch 50 may be entirely disposed in the second mounting hole 231. By providing the second mounting hole 231, it is convenient to realize the connection between the second transmission member 33, the second steering portion 23, and the second clutch 50. Moreover, at least a portion of the second clutch 50 is disposed in the second mounting hole 231, which can reduce the space occupied by the second clutch 50 and further increase the layout space on the lower side of the vehicle.

[0079] Preferably, the second transmission member 33 is a bevel gear, and the second transmission member 33 is connected to the second clutch 50 through the second shaft 25 .

[0080] In some embodiments of the present invention, Figure 7-Figure 9 As shown, the first clutch 40 is an electromagnetic clutch, which responds quickly and is easy to arrange, thereby improving the response speed of the steering system 100 and reducing the difficulty of assembly.

[0081] During vehicle driving, the magnitude of the steering force on the wheel 11 can be adjusted by adjusting the magnitude of the input current of the hub motor 12, or the degree of engagement of the first clutch 40 can be adjusted by controlling the magnitude of the electromagnetic force in the first clutch 40, thereby controlling the magnitude of the right steering force.

[0082] The first clutch 40 includes a first electromagnetic component 41 and a first clutch component 42. The first electromagnetic component 41 includes a first shell 411 and a first coil 412 arranged in the first shell 411. The first clutch component 42 is a magnetic component or a metal component that can produce a magnetic effect. The first electromagnetic component 41 is fixedly connected to the first steering portion 22, and the first transmission component 32 is fixedly connected to the first clutch component 42 through the first shaft 24.

[0083] When the wheel 11 needs to turn right, current flows into the first coil 412 to generate a magnetic field. The first coil 412 generates a magnetic field force on the first clutch 42 to combine the first clutch 42 with the first electromagnetic member 41 , thereby connecting the first transmission member 32 with the first steering portion 22 .

[0084] In some embodiments of the present invention, the second clutch 50 is an electromagnetic clutch, which responds quickly and is easy to arrange, thereby improving the response speed of the steering system 100 and reducing the difficulty of assembly.

[0085] During vehicle driving, the magnitude of the steering force on the wheel 11 can be adjusted by adjusting the magnitude of the input current of the hub motor 12, or the degree of engagement of the second clutch 50 can be adjusted by controlling the magnitude of the electromagnetic force in the second clutch 50, thereby controlling the magnitude of the left steering force.

[0086] The second clutch 50 includes a second electromagnetic component 51 and a second clutch component 52. The second electromagnetic component 51 includes a second shell and a second coil arranged in the second shell. The second clutch component 52 is a magnetic component or a metal component that can produce magnetic effect. The second electromagnetic component 51 is fixedly connected to the second steering portion 23. The second transmission component 33 is fixedly connected to the second clutch component 52 through the second shaft 25.

[0087] When the wheel 11 needs to turn left, current is passed through the second coil to generate a magnetic field, and the second coil generates a magnetic field force on the second clutch 52 to combine the second clutch 52 with the second electromagnetic member 51, thereby connecting the second transmission member 33 with the second steering portion 23.

[0088] Reference below Figure 1-Figure 9 A chassis assembly 1000 according to an embodiment of the second aspect of the present invention is described.

[0089] like Figure 1 and Figure 3 As shown, the chassis assembly 1000 according to the second embodiment of the present invention comprises: a chassis, the steering system 100 according to the first embodiment of the present invention, and a suspension system 200, wherein the suspension system 200 comprises: an upper swing arm 210 and a lower swing arm 220, wherein the upper swing arm 210 and the lower swing arm 220 are respectively connected between the steering knuckle 20 and the chassis.

[0090] Among them, the steering knuckle 20 is rotatably connected to the upper swing arm 210 and the lower swing arm 220 respectively through the kingpin 26, thereby realizing the rotatable connection between the steering knuckle 20 and the chassis. When the vehicle needs to turn, the hub motor 12 drives the wheel 11 to rotate left and right relative to the upper swing arm 210 and the lower swing arm 220 through the transmission mechanism 30 and the steering knuckle 20, thereby realizing steering assistance for the vehicle, or realizing the auxiliary driving function of the vehicle.

[0091] The chassis assembly 1000 according to the second aspect of the present invention can reduce the number of components, production cost and design difficulty by providing the steering system 100 according to the first aspect of the present invention.

[0092] In some embodiments of the present invention, Figure 1-Figure 5 As shown, the suspension system 200 also includes: a shock absorber 230, and the chassis assembly 1000 also includes: a chassis, and the shock absorber 230 is connected between the lower arm 220 and the chassis. By setting the shock absorber 230, a portion of the vibration on the wheel assembly 10 can be absorbed, thereby improving the stability of the vehicle during driving.

[0093] The vehicle according to the third aspect of the present invention comprises: the steering system 100 according to the first aspect of the present invention or the chassis assembly 1000 according to the third aspect of the present invention.

[0094] The vehicle according to the embodiment of the third aspect of the present invention can improve driving range, reduce production costs, and increase the cabin space within the vehicle.

[0095] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0096] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0097] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0098] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0099] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A steering system, characterized in that: include: A wheel assembly, the wheel assembly comprising a wheel and a hub motor, the hub motor being arranged in the wheel and being used to drive the wheel to rotate; A steering knuckle and a transmission mechanism, wherein the steering knuckle is arranged on the wheel, and the transmission mechanism is connected between the wheel hub motor and the steering knuckle. The wheel hub motor can also be used to drive the wheel to steer through the transmission mechanism and the steering knuckle.

2. The steering system according to claim 1, characterized in that: The transmission mechanism comprises: A main transmission member connected to the wheel hub motor; a first transmission member, wherein the first transmission member is connected between the main transmission member and the steering knuckle, and the main transmission member drives the wheel to rotate rightward through the first transmission member and the steering knuckle; A second transmission member, wherein the second transmission member is connected between the main transmission member and the steering knuckle, and the main transmission member drives the wheel to rotate leftward through the second transmission member and the steering knuckle.

3. The steering system according to claim 2, characterized in that: The main transmission member is configured to drive the first transmission member to rotate along a first direction and drive the second transmission member to rotate along a second direction, and the first direction and the second direction are opposite to each other.

4. The steering system according to claim 3, characterized in that: The main transmission member, the first transmission member and the second transmission member are all bevel gears. The main transmission member is coaxially connected to the hub motor, and the first transmission member and the second transmission member are both in transmission cooperation with the main transmission member.

5. The steering system according to claim 4, characterized in that: The first transmission member and the second transmission member are arranged at upper and lower ends of the main transmission member respectively.

6. The steering system according to claim 3, characterized in that: The main transmission member is a worm wheel, the first transmission member and the second transmission member are both worms, the main transmission member is coaxially connected to the hub motor, and the first transmission member and the second transmission member are respectively meshed with the main transmission member.

7. The steering system according to claim 6, characterized in that: The first transmission member and the second transmission member are arranged at the front and rear sides of the main transmission member respectively.

8. The steering system according to claim 3, characterized in that: The main transmission member, the first transmission member and the second transmission member are all magnetic gears. The main transmission member is coaxially connected to the hub motor. The first transmission member and the second transmission member are respectively magnetically matched with the main transmission member, and the rotation axis of the first transmission member and the rotation axis of the second transmission member are perpendicular to the rotation axis of the main transmission member.

9. The steering system according to claim 8, characterized in that: The first transmission member and the second transmission member are arranged at the front and rear sides of the main transmission member respectively.

10. The steering system according to claim 2, characterized in that: The steering knuckle includes: a steering body, a first steering part and a second steering part. The steering body is annular and arranged around the axis of the wheel. The first steering part and the second steering part are arranged at intervals on the steering body. The first transmission member is suitable for being connected to the first steering part, and the second transmission member is suitable for being connected to the second steering part.

11. The steering system according to claim 10, characterized in that: The steering system further comprises: A first clutch, wherein the first clutch is connected between the first transmission member and the first steering portion; and / or, A second clutch is connected between the second transmission member and the second steering portion.

12. The steering system according to claim 11, characterized in that: The first steering portion is formed with a first mounting hole, and at least a portion of the first clutch is disposed in the first mounting hole; And / or, the second steering portion is formed with a second mounting hole, and at least a portion of the second clutch is disposed in the second mounting hole.

13. The steering system according to claim 11, characterized in that: The first clutch is an electromagnetic clutch; and / or the second clutch is an electromagnetic clutch.

14. A chassis assembly, characterized in that: include: Chassis; The steering system according to any one of claims 1 to 13; A suspension system comprises an upper swing arm and a lower swing arm, wherein the upper swing arm and the lower swing arm are respectively connected between the steering knuckle and the chassis.

15. A vehicle, characterized in that: include: The steering system according to any one of claims 1 to 13 or the chassis assembly according to claim 14.

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