Steering wheel assembly and vehicle

Abstract

The present invention discloses a steering wheel assembly and a vehicle, wherein the steering wheel assembly comprises: a matching mounting structure, a steering input shaft, a shock absorber assembly, a bearing assembly and a wheel. A mounting sleeve is formed in the middle of the matching mounting structure; the steering input shaft vertically passes through the mounting sleeve and is connected to the shock absorber base, and the steering input shaft and the mounting sleeve are clearance-matched; the bearing assembly is clamped and fixed at the upper and lower ends of the mounting sleeve and is matched with the steering input shaft so that the steering input shaft can rotate relative to the matching mounting structure, and the upper end of the steering input shaft has a first structure, and the bearing assembly is clamped between the first structure and the shock absorber base. The arrangement position of the steering wheel assembly is not limited, and the arrangement space occupied is smaller, which is more convenient to arrange on the vehicle body, and the wheel can be driven to steer independently, so as to effectively increase the rotation angle of the wheel, thereby increasing the steering driving mode of the wheel, and thus effectively improving the steering performance of the vehicle.

Description

Technical Field

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

[0002] The commonly used steering mechanism in traditional vehicles is as follows: the movement of the rack in the steering gear pulls the steering tie rods at both ends of the steering gear to move, and the steering tie rods transfer force to the wheels to achieve the steering function. The steering gear assembly is installed on the frame, and the wheels are pulled to move by the steering tie rods. Therefore, not only is the layout position of the wheels limited, but the entire steering mechanism occupies a large space and is inconvenient to arrange. In addition, the wheel steering is limited by the steering tie rod and has only a fixed rotation angle range and the range is relatively small, and each wheel cannot be steered independently, which affects the steering performance of the vehicle. There is room for improvement. Summary of the invention

[0003] In view of this, the present invention aims to propose a steering wheel assembly, the arrangement position of which is not restricted, and the arrangement space occupied is smaller, which is more convenient to arrange on the vehicle body, and can drive the wheels to steer independently, so as to effectively improve the steering performance of the vehicle.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A steering wheel assembly comprises: a matching mounting structure, a mounting sleeve is formed in the middle of the matching mounting structure; a steering input shaft and a shock absorber assembly, the steering input shaft vertically passes through the mounting sleeve to be connected to the shock absorber base at the upper end of the shock absorber assembly, the steering input shaft and the mounting sleeve are clearance-matched, and the steering input shaft drives the shock absorber assembly to rotate around the axis of the steering input shaft; a bearing assembly, the bearing assembly is clamped and fixed at the upper and lower ends of the mounting sleeve and is matched with the steering input shaft so that the steering input shaft can rotate relative to the matching mounting structure, the upper end of the steering input shaft has a first structure, and the bearing assembly limit clamp is arranged between the first structure and the shock absorber base; a wheel, and the wheel is rotatably connected to the shock absorber assembly.

[0006] Further, the matching installation structure is constructed as a part of the vehicle body; or, the matching installation structure is constructed as a vehicle body connecting piece, and the vehicle body connecting piece is connected and fixed to the vehicle body.

[0007] Furthermore, the bearing assembly includes: an upper bearing part and a lower bearing part, the mounting sleeve protrudes upward from the mating mounting structure, the upper bearing part is matingly connected to the upper end of the mounting sleeve, the lower bearing part is matingly connected to the lower end of the mounting sleeve, and the upper bearing part and the lower bearing part are directly opposite each other up and down.

[0008] Further, the upper bearing portion includes: a first seat ring, a first shaft ring, and a first rolling structure arranged between the first seat ring and the first shaft ring, the lower end of the first seat ring is constructed as a first mating end, the first mating end is tightly mated with the upper port of the mounting sleeve, the upper end of the first seat ring is rotatably mated with the first shaft ring, and the steering input shaft is synchronously rotatably connected with the first shaft ring.

[0009] Further, the lower bearing portion includes: a second seat ring, a second shaft ring, and a second rolling structure arranged between the second seat ring and the second shaft ring, the upper end of the second seat ring is constructed as a second mating end, the second mating end is tightly mated with the lower port of the mounting sleeve, the lower end of the second seat ring is rotatably mated with the second shaft ring, and the steering input shaft is synchronously rotatably connected with the second shaft ring.

[0010] Furthermore, a stop boss is formed at the upper end of the shock absorber base, and the stop boss is tightly pressed against the second shaft ring.

[0011] Further, the first structure is constructed as a limit flange, which is formed on the steering input shaft and is pressed against the first shaft ring; or, the first structure includes: a self-locking nut, which is locked with an external thread formed on the upper end of the steering input shaft, and the self-locking nut is pressed against the first shaft ring.

[0012] Further, the steering input shaft is interference-fitted with the first shaft ring and the second shaft ring respectively; or, the steering input shaft is spline-fitted with the first shaft ring and the second shaft ring respectively.

[0013] Furthermore, the steering wheel assembly further comprises: a driving structure, wherein the driving structure is suitable for driving the steering input shaft to rotate a full circle.

[0014] Compared with the prior art, the steering wheel assembly of the present invention has the following advantages:

[0015] The steering wheel assembly described in the present invention has no restrictions on the arrangement position of the steering wheel assembly, occupies a smaller arrangement space, is more convenient to be arranged on the vehicle body, and can drive the wheels to perform independent steering to effectively increase the rotation angle of the wheels, thereby increasing the steering driving mode of the wheels, thereby effectively improving the steering performance of the vehicle.

[0016] Another object of the present invention is to provide a vehicle, comprising the above-mentioned steering wheel assembly, the vehicle having better steering performance and passability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 is a partial structural schematic diagram of a steering wheel assembly according to an embodiment of the present invention;

[0019] Figure 2 is a partial exploded view of a steering wheel assembly according to an embodiment of the present invention;

[0020] Figure 3 is a partial cross-sectional view of a steering wheel assembly according to an embodiment of the present invention;

[0021] Figure 4 is a partial cross-sectional view of a steering wheel assembly according to an embodiment of the present invention;

[0022] Figure 5 is a partial structural schematic diagram of a steering wheel assembly according to another embodiment of the present invention;

[0023] Figure 6 FIG. 4 is a partial exploded view of a steering wheel assembly according to another embodiment of the present invention.

[0024] Description of reference numerals:

[0025] 1-steering input shaft, 2-shock absorber assembly, 3-matching installation structure, 4-bearing assembly, 31-installation sleeve, 41-upper bearing portion, 42-lower bearing portion, 411-first seat ring, 412-first shaft ring, 413-first rolling structure, 421-second seat ring, 422-second shaft ring, 423-second rolling structure, 21-shock absorber base, 11-limiting flange, 22-shock absorber arm, 5-self-locking nut. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0027] Reference below Figure 1-Figure 6 A steerable wheel assembly according to an embodiment of the present invention is described.

[0028] The steering wheel assembly according to the embodiment of the present invention may include: a steering input shaft 1, a shock absorber assembly 2, a matching installation structure 3, a bearing assembly 4 and a wheel.

[0029] like Figure 1-Figure 3 As shown, the matching mounting structure 3 is suitable for fixing to the vehicle body, so that the entire steering wheel assembly is fixed to the vehicle body through the matching mounting structure 3, thereby achieving a stable connection between the steering wheel assembly and the vehicle body, thereby ensuring the safety and stability of the vehicle when turning.

[0030] A mounting sleeve 31 is formed in the middle of the mounting structure 3, and the steering input shaft 1 vertically passes through the mounting sleeve 31 to be connected to the shock absorber base 21 at the upper end of the shock absorber assembly 2, and the steering input shaft 1 and the mounting sleeve 31 are clearance-matched, so that the steering input shaft 1 can drive the shock absorber base 21 to rotate without interfering with the mounting sleeve 31.

[0031] Among them, the steering input shaft 1 is suitable for driving the shock absorber assembly 2 to rotate around the axis of the steering input shaft 1, and the wheel is rotatably connected to the shock absorber assembly 2. Therefore, when the steering input shaft 1 drives the shock absorber assembly 2 to rotate, it can also drive the wheel to rotate, so as to form a wheel steering unit that can be independently steered. Among them, the steering input shaft 1 can be connected to the driving structure so that the driving structure provides a driving force to drive the steering input shaft 1 to rotate, thereby driving the shock absorber assembly 2 and the wheel to rotate and change direction.

[0032] Since the commonly used steering wheel assembly in traditional vehicles is in the form of: the movement of the rack inside the steering gear pulls the steering tie rods at both ends of the steering gear to move, and the steering tie rods transfer the force to the wheels to achieve the steering function, wherein the steering gear assembly is installed on the frame, and the wheels are pulled to move by the steering tie rods. Therefore, not only is the layout position of the wheels limited, but the entire steering wheel assembly also occupies a large space, and the layout is relatively inconvenient.

[0033] For this reason, the embodiment of the present invention adopts an independent steering input shaft 1 to drive the shock absorber assembly 2 and the wheel rotation to form an independent wheel steering unit, which is not restricted by the position of the traditional steering gear tie rod, so the layout position is not restricted, and the layout space occupied is also smaller, which is more convenient to arrange on the vehicle body.

[0034] In addition, conventional wheel steering is limited by the steering tie rod and has only a fixed rotation angle range and the range is relatively small. However, the steering wheel assembly of the present invention uses a driving structure to directly drive the steering input shaft 1 to drive the shock absorber assembly 2 and the wheel to rotate. Therefore, the rotation angle will not be limited, and even a rotational motion can be performed, that is, a 360° rotation can be performed. Therefore, the flexibility of the wheel steering angle control is effectively increased, and it can better adapt to the working condition switching between two-wheel steering and four-wheel steering, so that the wheel can achieve ±90° steering, and then realize front-wheel steering, four-wheel steering, oblique driving, horizontal driving, on-the-spot steering and other steering driving modes to improve the steering performance and passability of the vehicle.

[0035] Further, the bearing assembly 4 is clamped and fixed at the upper and lower ends of the mounting sleeve 31 and is matched and connected with the steering input shaft 1, so that the steering input shaft 1 can rotate relative to the matching mounting structure 3. That is, the bearing assembly 4 is arranged at the upper and lower ends of the mounting sleeve 31 and is limitedly sleeved on the steering input shaft 1, so that the matching mounting structure 3 is clamped between the bearing assemblies 4, and the steering input shaft 1 and the shock absorber assembly 2 can be stably connected to the matching mounting structure 3, and then stably connected to the vehicle body, and the steering input shaft 1 can rotate relative to the matching mounting structure 3.

[0036] Among them, since the bearing assembly 4 is arranged at the upper and lower ends of the mounting sleeve 31, during the vibration of the vehicle, the axial force and torsional force between the shock absorber assembly 2 and the matching mounting structure 3 will be applied to the bearing assembly 4 without affecting the driving structure. In this way, it is ensured that the shock absorber assembly 2 and the wheel can rotate relative to the matching mounting structure 3 without being damaged by the axial force and torsional force, thereby reducing the energy loss during the wheel turning process to improve the bearing strength.

[0037] Furthermore, the upper end of the steering input shaft 1 has a first structure, and the bearing assembly 4 is limitedly clamped between the first structure and the shock absorber base 21. That is, the bearing assembly 4 and the matching mounting structure 3 are clamped between the first structure and the shock absorber base 21, so that the overall structure is more compact, and the axial force and torsional force between the shock absorber assembly 2 and the matching mounting structure 3 can act on the bearing assembly 4, and will not be transmitted to the driving structure, so as to avoid damage to the driving structure.

[0038] According to the steering wheel assembly of the embodiment of the present invention, the arrangement position of the steering wheel assembly is not restricted, and the arrangement space occupied is smaller, which is more convenient to arrange on the vehicle body, and the wheels can be driven to perform independent steering to effectively increase the rotation angle of the wheels, thereby increasing the steering driving mode of the wheels, thereby effectively improving the steering performance of the vehicle.

[0039] As a preferred embodiment, the matching installation structure 3 is constructed as a part of the vehicle body. That is, the matching installation structure 3 is a specific structure on the vehicle body, which is a part of the vehicle body and does not need to be installed on the vehicle body separately. Therefore, the installation steps are saved and the firmness between the matching installation structure 3 and the vehicle body can be ensured. During installation, it is only necessary to assemble the steering input shaft 1, the shock absorber assembly 2 and the bearing assembly 4 thereon.

[0040] As another preferred embodiment, the matching installation structure 3 is constructed as a vehicle body connector, which is connected and fixed to the vehicle body. That is, the matching installation structure 3 is a structural member independent of the vehicle body, which is not a part of the vehicle body and needs to be installed separately on the vehicle body. Therefore, it is more convenient to assemble the steering wheel assembly. That is, during installation, the steering input shaft 1, the shock absorber assembly 2 and the bearing assembly 4 can be assembled on the matching installation structure 3 first, and then the matching installation structure 3 is fixedly connected to the vehicle body.

[0041] like Figure 1-Figure 4 As shown, the bearing assembly 4 includes: an upper bearing portion 41 and a lower bearing portion 42, wherein the upper bearing portion 41 is matched and connected with the upper end of the mounting sleeve 31, and the lower bearing portion 42 is matched and connected with the lower end of the mounting sleeve 31, and the upper bearing portion 41 and the lower bearing portion 42 clamp the mounting sleeve 31 therebetween to achieve a stable fit, and the upper bearing portion 41 and the lower bearing portion 42 are vertically opposite to each other, and the steering input shaft 1 is matched and connected with the upper bearing portion 41 and the lower bearing portion 42 respectively to achieve a rotatable setting of the steering input shaft 1 relative to the matching mounting structure 3.

[0042] The mounting sleeve 31 protrudes upward to match the mounting structure 3. Thus, it is more convenient to match and connect with the bearing assembly 4, and the wheelbase can be effectively shortened.

[0043] Preferably, both the upper bearing portion 41 and the lower bearing portion 42 can be configured as pressure bearings, thereby enabling the upper bearing portion 41 and the lower bearing portion 42 to better withstand the axial force and torsional force between the shock absorber assembly 2 and the matching mounting structure 3, so as to avoid affecting the setting safety of the driving structure.

[0044] Reference Figure 4 The upper bearing portion 41 includes: a first seat ring 411, a first shaft ring 412 and a first rolling structure 413 arranged between the first seat ring 411 and the first shaft ring 412, wherein the lower end of the first seat ring 411 is constructed as a first mating end, and the first mating end is tightly mated with the upper end of the mounting sleeve 31 so that the first seat ring 411 cannot move relative to the mating mounting structure 3, and the upper end of the first seat ring 411 has a first mating groove, and the first rolling structure 413 is arranged in the first mating groove, thereby realizing a rotatable fit between the first mating groove and the first shaft ring 412, so that the first shaft ring 412 can rotate in the first mating groove, and the steering input shaft 1 is synchronously rotatably connected with the first shaft ring 412, so that the steering input shaft 1 can drive the first shaft ring 412 to rotate relative to the first seat ring 411 and the mating mounting structure 3.

[0045] Reference Figure 4Similarly, the lower bearing portion 42 includes: a second seat ring 421, a second shaft ring 422 and a second rolling structure 423 arranged between the second seat ring 421 and the second shaft ring 422, wherein the upper end of the second seat ring 421 is constructed as a second mating end, and the second mating end is tightly mated with the lower port of the mounting sleeve 31 so that the second seat ring 421 cannot move relative to the mating mounting structure 3, and the lower end of the second seat ring 421 has a second mating groove, and the second rolling structure 423 is arranged in the second mating groove, thereby realizing a rotatable fit between the second mating groove and the second shaft ring 422, so that the second shaft ring 422 can rotate in the second mating groove, and the steering input shaft 1 is synchronously rotatably connected with the second shaft ring 422, so that the steering input shaft 1 can drive the second shaft ring 422 to rotate relative to the second seat ring 421 and the mating mounting structure 3.

[0046] Thereby, the stable rotation of the steering input shaft 1 relative to the matching installation structure 3 is achieved, and further the stable rotation of the shock absorber assembly 2 and the wheel relative to the matching installation structure 3 is achieved.

[0047] Optionally, the steering input shaft 1 may be respectively connected with the first shaft ring 412 and the second shaft ring 422 by interference fit to achieve stable synchronous rotation; or, the steering input shaft 1 may also be respectively connected with the first shaft ring 412 and the second shaft ring 422 by spline fit to also achieve stable synchronous rotation.

[0048] Combination Figure 1 , Figure 3 and Figure 4 In the illustrated embodiment, the shock absorber assembly 2 includes: a shock absorber base 21 and shock absorber arms 22 on both sides connected to the shock absorber base 21, wherein the upper ends of the shock absorber arms 22 on both sides are fixedly connected to the shock absorber base 21, respectively, and the wheels are connected between the lower ends of the shock absorber arms 22 on both sides, and the shock absorber assembly 2 is connected to the steering input shaft 1 through the shock absorber base 21 to transmit the steering force and torque to the shock absorber assembly 2, thereby driving the shock absorber assembly 2 and the wheel to rotate.

[0049] The damper base 21 has a matching hole, and a mounting groove is provided on the lower wall of the damper base 21. The matching hole is connected with the mounting groove. The steering input shaft 1 is passed through the matching hole and connected with the matching hole by interference fit. A self-locking nut 5 is provided in the mounting groove. The lower end of the steering input shaft 1 has an external thread and is threadedly connected with the self-locking nut 5 to further tighten the steering input shaft 1. Thus, the connection between the steering input shaft 1 and the damper base 21 can be made more stable.

[0050] Furthermore, anti-loosening can be achieved by adding a pin to the lower end of the self-locking nut 5 or applying glue between the mounting groove and the self-locking nut 5 and between the steering input shaft 1 and the self-locking nut 5, so as to further improve the connection stability between the steering input shaft 1 and the shock absorber base 21.

[0051] Specifically, the shock absorber arm 22 includes: a piston rod and a cylinder, the wheel is connected between the two cylinders, one end of the two piston rods is suitable for fitting in the two cylinders, and the other end is suitable for being fixed to the shock absorber base 21, and a shock absorber spring is arranged between the cylinder and the shock absorber base 21. Therefore, when the vehicle runs on a bumpy road, the shock absorber arm 22 can achieve effective buffering and vibration reduction.

[0052] Further, refer to Figure 1 , Figure 3 and Figure 4 The upper end of the shock absorber base 21 is formed with a stop boss, which is pressed against the second shaft ring 422, and the first structure is a limit flange 11, which is formed on the steering input shaft 1 and is pressed against the first shaft ring 412. That is, the bearing assembly 4 and the matching mounting structure 3 are clamped between the stop boss and the limit flange 11, so that the overall structure is more compact, and the axial force and torsional force between the shock absorber assembly 2 and the matching mounting structure 3 can act on the bearing assembly 4, and will not be transmitted to the drive structure, so as to avoid damage to the drive structure.

[0053] Among them, the friction force between the steering input shaft 1 and the first shaft ring 412 should be much greater than the friction force between the first shaft ring 412 and the first seat ring 411, and the friction force between the limiting flange 11 and the first seat ring 411 should also be much greater than the friction force between the first shaft ring 412 and the first seat ring 411. Therefore, it can be ensured that the steering input shaft 1 and the first shaft ring 412 can rotate stably relative to the shock absorber base 21 and the first seat ring 411.

[0054] Similarly, the friction force between the steering input shaft 1 and the second shaft ring 422 should be much greater than the friction force between the second shaft ring 422 and the second seat ring 421, and the friction force between the stop boss and the second seat ring 421 should also be much greater than the friction force between the second shaft ring 422 and the second seat ring 421. Therefore, it can be ensured that the steering input shaft 1 and the second shaft ring 422 can rotate stably relative to the shock absorber base 21 and the second seat ring 421.

[0055] That is to say, the friction force generated by the extrusion and interference fit between the steering input shaft 1 and the first shaft ring 412 is much greater than the friction force between the first shaft ring 412 and the first seat ring 411, and the friction force generated by the extrusion of the stop boss and the second shaft ring 422, the interference fit between the steering input shaft 1 and the second seat ring 421, and the interference fit between the shock absorber base 21 and the steering input shaft 1 is much greater than the friction force between the second shaft ring 422 and the second seat ring 421, which can ensure that the steering force can be effectively transmitted from the steering input shaft 1 to the shock absorber base 21, thereby driving the shock absorber assembly 2 and the wheel to rotate stably.

[0056] As another preferred embodiment, refer to Figure 5 and Figure 6 The first structure includes: a self-locking nut 5, which is locked with an external thread formed on the upper end of the steering input shaft 1, and the self-locking nut 5 is pressed against the first shaft ring 412. That is, the steering input shaft 1 can also be installed in reverse, and a plug-type screw is formed at the lower end of the steering input shaft 1 to facilitate the steering input shaft 1 to be tightly connected to the shock absorber base 21 to ensure that sufficient friction can be generated between the steering input shaft 1 and the shock absorber base 21, and an external thread is formed at the upper end of the steering input shaft 1 to be locked with the self-locking nut 5 thread, and the self-locking nut 5 is suitable for pressing against the first shaft ring 412, and can also be anti-loosening by gluing.

[0057] According to some embodiments of the present invention, the steering wheel assembly further includes: a driving structure (not shown in the figure), which may be a driving motor, and is suitable for driving the steering input shaft 1 to rotate a full circle, that is, to achieve 360° rotation of the wheel, so as to effectively improve the steering performance and passability of the vehicle.

[0058] According to some embodiments of the present invention, the wheel includes: a hub motor and a tire (not shown in the figure), the tire is mounted on the hub motor, and the hub motor is rotatably connected between the vibration damping arms 22 on both sides to drive the tire to rotate by cooperating with the rotation of the mounting structure 3 relative to the vibration damping arms 22, thereby realizing the overall rotation and steering operation of the wheel.

[0059] According to another aspect of the present invention, a vehicle includes the steering wheel assembly described in the above embodiment. Other structures of the vehicle, such as a transmission, a braking system, a steering system, etc., are already in the prior art and are well known to those skilled in the art, so other structures of the vehicle are not described in detail here.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A steering wheel assembly, characterized in that: include: A matching installation structure (3), wherein a mounting sleeve (31) is formed in the middle of the matching installation structure (3); A steering input shaft (1) and a shock absorber assembly (2), wherein the steering input shaft (1) vertically passes through the mounting sleeve (31) to be connected to a shock absorber base (21) at the upper end of the shock absorber assembly (2), the steering input shaft (1) and the mounting sleeve (31) are clearance-matched, and the steering input shaft (1) drives the shock absorber assembly (2) to rotate around the axis of the steering input shaft (1); A bearing assembly (4), the bearing assembly (4) being clamped and fixed at the upper and lower ends of the mounting sleeve (31) and being matched and connected with the steering input shaft (1) so that the steering input shaft (1) can rotate relative to the matching mounting structure (3), the upper end of the steering input shaft (1) having a first structure, and the bearing assembly (4) being limitedly clamped between the first structure and the shock absorber base (21); a wheel, the wheel being rotatably connected to the shock absorber assembly (2); The matching mounting structure (3) is constructed as a part of the vehicle body; Alternatively, the matching installation structure (3) is constructed as a vehicle body connecting piece, and the vehicle body connecting piece is connected and fixed to the vehicle body; A driving structure, wherein the driving structure is suitable for driving the steering input shaft (1) to rotate a full circle; The bearing assembly (4) comprises: an upper bearing portion (41) and a lower bearing portion (42); the mounting sleeve (31) protrudes upward from the matching mounting structure (3); the upper bearing portion (41) is matched and connected with the upper end of the mounting sleeve (31); the lower bearing portion (42) is matched and connected with the lower end of the mounting sleeve (31); the upper bearing portion (41) and the lower bearing portion (42) are vertically opposite to each other; The upper bearing portion (41) comprises: a first seat ring (411), a first shaft ring (412), and a first rolling structure (413) arranged between the first seat ring (411) and the first shaft ring (412); The first structure is a limiting flange (11), which is formed on the steering input shaft (1) and is pressed against the first shaft ring (412); The shock absorber base (21) has a matching hole, and a mounting groove is provided on the lower wall of the shock absorber base (21). The matching hole is connected to the mounting groove. The steering input shaft (1) is passed through the matching hole and is connected to the matching hole by interference fit. A self-locking nut (5) is provided in the mounting groove. The lower end of the steering input shaft (1) has an external thread and is threadedly connected to the self-locking nut (5).

2. The steering wheel assembly according to claim 1, characterized in that: The lower end of the first seat ring (411) is constructed as a first mating end, the first mating end is tightly mated with the upper end of the mounting sleeve (31), the upper end of the first seat ring (411) is rotatably mated with the first shaft ring (412), and the steering input shaft (1) is synchronously rotatably connected with the first shaft ring (412).

3. The steering wheel assembly according to claim 2, characterized in that: The lower bearing portion (42) includes: a second seat ring (421), a second shaft ring (422) and a second rolling structure (423) arranged between the second seat ring (421) and the second shaft ring (422); the upper end of the second seat ring (421) is configured as a second mating end, the second mating end is tightly mated with the lower port of the mounting sleeve (31); the lower end of the second seat ring (421) is rotatably mated with the second shaft ring (422); the steering input shaft (1) is synchronously rotatably connected with the second shaft ring (422).

4. The steering wheel assembly according to claim 3, characterized in that: A stop boss is formed at the upper end of the shock absorber base (21), and the stop boss is stop-pressed against the second shaft ring (422).

5. The steering wheel assembly according to claim 3, characterized in that: The steering input shaft (1) is respectively interference-fitted with the first shaft ring (412) and the second shaft ring (422); Alternatively, the steering input shaft (1) is spline-matched with the first shaft ring (412) and the second shaft ring (422) respectively.

6. A vehicle, characterized in that: The invention comprises a steering wheel assembly according to any one of claims 1 to 5.

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