CN-122009324-A - Switchable rear wheel steering mechanism and vehicle

CN122009324ACN 122009324 ACN122009324 ACN 122009324ACN-122009324-A

Abstract

The invention provides a switchable rear wheel steering mechanism and a vehicle, wherein the switchable rear wheel steering mechanism comprises a shell, a moving assembly and a pair of rear wheel connecting assemblies, the moving assembly is arranged in the shell, connecting ends are arranged at two ends of the moving assembly along the axial direction of the moving assembly, the connecting ends are a first connecting end and a second connecting end which can move relative to the shell at the same time, one end of the rear wheel connecting assemblies is used for connecting rear wheels, and the other end of the rear wheel connecting assemblies is movably arranged in the shell and controllably contacted with and separated from the first connecting end or the second connecting end. The steering control device can accurately switch single-wheel or double-wheel steering control along with driving scenes by only adopting a single driving unit, and has smaller volume and low manufacturing cost compared with the scheme of adopting two steering gear driving assemblies to respectively drive the rear wheels in the prior art.

Inventors

GU LINXUE
ZHANG XIANGXIANG
FENG BO
LI QINGSONG
LV KUN
CHEN ZIYUN

Assignees

武汉江夏楚能汽车技术研发有限公司

Dates

Publication Date: 20260512
Application Date: 20260331

Claims (10)

1. A switchable rear wheel steering mechanism, comprising: A housing; the movable assembly is arranged in the shell, and the two ends of the movable assembly along the axial direction of the movable assembly are provided with connecting ends which are respectively a first connecting end and a second connecting end capable of moving relative to the shell at the same time; the rear wheel connecting components are movably arranged in the shell and respectively contacted with and separated from the first connecting end and the second connecting end in a controllable manner.
2. The switchable rear wheel steering mechanism of claim 1 wherein the rear wheel connecting assembly includes a drive half shaft having one end for connecting the rear wheel and a translating member coupled to the drive half shaft for driving the drive half shaft relative to the housing to move the other end of the drive half shaft into and out of contact with the connecting end of the moving assembly.
3. The switchable rear wheel steering mechanism of claim 2, wherein the translating member comprises a magnetic attraction portion and a reset portion, the magnetic attraction portion is arranged on the transmission half shaft, the magnetic attraction portion generates magnetic attraction force with the moving assembly when being electrified, the transmission half shaft is driven to move towards the moving assembly and contact with the connecting end of the moving assembly, the reset portion is connected to the inner wall of the shell, and the reset portion always applies acting force to the transmission half shaft in a direction away from the moving assembly.
4. The switchable rear wheel steering mechanism of claim 3 wherein the magnetic attraction portion comprises a magnetic core and a coil, the magnetic core being disposed around the drive axle shaft, the coil being wound around the magnetic core and in communication with an external power source.
5. The switchable rear wheel steering mechanism of claim 4, wherein the return portion comprises a spring base and the spring, the spring base is fixed to the inner wall of the housing, one end of the spring is connected to the spring base, the other end of the spring is connected to an end of the magnetic portion away from the moving assembly, and the spring always applies a pulling force to the magnetic portion away from the moving assembly.
6. The switchable rear wheel steering mechanism of claim 5 wherein the rear wheel connecting assembly further comprises a locking assembly disposed within the housing for locking the drive half shaft when the drive half shaft is not in contact with the connecting end of the shifting assembly.
7. The switchable rear wheel steering mechanism of claim 6, wherein the locking assembly comprises a locking magnetic core, a locking coil and a locking spring, wherein a locking groove is formed in the housing, one end of the locking spring is fixed in the locking groove, the other end of the locking spring is fixed with the locking magnetic core, the locking coil is wound on the locking magnetic core, and the locking coil enables the locking magnetic core to generate magnetic attraction force for adsorbing the transmission half shaft when the locking coil is electrified.
8. The switchable rear wheel steering mechanism of claim 7 wherein the locking core has a recess in an outer periphery thereof for receiving the locking coil.
9. The switchable rear wheel steering mechanism of claim 4 wherein the drive axle shaft extends radially to form a ring of projections, the projections abutting the connecting ends of the moving assembly to limit the drive axle shaft when the magnetic core is engaged with the moving assembly.
10. A vehicle comprising a switchable rear wheel steering mechanism as claimed in any one of claims 1 to 9.

Description

Switchable rear wheel steering mechanism and vehicle Technical Field The invention relates to the technical field of automobile steering, in particular to a switchable rear wheel steering mechanism and a vehicle. Background Compared with the traditional front-wheel steering automobile, the four-wheel steering automobile can control the rear-wheel steering while carrying out the front-wheel steering, and the essential advantage of the four-wheel steering automobile is derived from the capability of the system for independently controlling the lateral force of the rear wheels. The rear wheel steering technology utilizes the driver to drive the rear wheels to controllably deflect, so that the rear wheels can actively steer according to the current working condition in the turning process of the vehicle, the turning radius is reduced, and the flexibility of the vehicle is enhanced. The existing rear wheel steering system is mainly divided into two main types, namely an integral rear wheel steering device assembly, namely a screw rod or a gear rack mechanism is driven by a motor, two rear wheels are directly enabled to generate a continuous and controllable deflection angle so as to assist the steering or the lifting stability of a vehicle, and the other type of distributed rear wheel steering device assembly adopts two steering device driving assemblies so as to independently control the wheels. The technology has the following problems that the integral rear wheel steering device assembly cannot independently control single-side wheels, the rear wheel steering is limited greatly and cannot adapt to various working conditions, and the mode of the distributed rear wheel steering device assembly needs to be provided with two controllers, so that the cost is high. Disclosure of Invention In view of the above, it is necessary to provide a switchable rear wheel steering mechanism and a vehicle that can solve the above-described problems. The invention provides a switchable rear wheel steering mechanism, comprising: A housing; the movable assembly is arranged in the shell, and the two ends of the movable assembly along the axial direction of the movable assembly are provided with connecting ends which are respectively a first connecting end and a second connecting end capable of moving relative to the shell at the same time; the rear wheel connecting components are movably arranged in the shell and respectively contacted with and separated from the first connecting end and the second connecting end in a controllable manner. In other embodiments, the rear wheel connection assembly includes a drive half shaft and a translation member, one end of the drive half shaft is used for connecting the rear wheel, the translation member is connected with the drive half shaft and is used for driving the drive half shaft to move relative to the shell, so that the other end of the drive half shaft is in contact with or out of contact with the connection end of the movement assembly. In other embodiments, the translation member includes a magnetic attraction portion and a reset portion, the magnetic attraction portion is disposed on the transmission half shaft, the magnetic attraction portion generates magnetic attraction force with the moving component when the magnetic attraction portion is electrified, the transmission half shaft is driven to move toward the moving component and contact with the connecting end of the moving component, the reset portion is connected to the inner wall of the housing, and the reset portion always applies acting force to the transmission half shaft along a direction deviating from the moving component. In other embodiments, the magnetic part comprises a magnetic core and a coil, the magnetic core is sleeved on the transmission half shaft, and the coil is wound on the magnetic core and is communicated with an external power supply. In other embodiments, the reset portion includes a spring base and the spring, the spring base with shells inner wall is fixed, spring one end with the spring base is connected, the other end with the magnetism is inhaled the portion and is kept away from the one end of moving the subassembly is connected, the spring is always to the magnetism is inhaled the portion and is exerted and keep away from moving the pulling force of subassembly. In other embodiments, the rear wheel connection assembly further includes a locking assembly disposed within the housing for locking the drive half shaft when the drive half shaft is not in contact with the connection end of the shifting assembly. In other embodiments, the locking assembly comprises a locking magnetic core, a locking coil and a locking spring, wherein a locking groove is formed in the shell, one end of the locking spring is fixed in the locking groove, the other end of the locking spring is fixed with the locking magnetic core, the locking coil is wound on the locking magnetic core, and the locking coil enables the lockin