CROSS-REFERENCE TO RELATED APPLICATIONS

This application is the National Stage of International Application No. PCT/CN2019/088836, “Steering Column and Vehicle,” filed on May 28, 2019, which claims priority to Chinese Patent Applications No. 201810553426.8, filed on May 31, 2018, and 201820840740.X, filed on May 31, 2018. The entire content of all of the above-referenced applications are incorporated herein by reference.

FIELD

The present disclosure relates to a vehicle steering system, and specifically, to a steering column and a vehicle having the steering column.

BACKGROUND

The utility model patent with publication number CN205706835U discloses an electric four-way adjustment steering column mechanism. Such an electric four-way adjustment steering column mechanism is relatively simple in structure, with relatively poor adjustment displacement precision, relatively poor reliability, and generates relatively large noises in the adjustment process. Core components such as an adjustment motor and a controller are relatively poor in compactness, and are easily damaged as force-bearing levers. Both the overall structure and the product feasibility are relatively poor, and the quality of the steering column mechanism cannot be effectively guaranteed.

SUMMARY

An objective of the present disclosure is to provide a steering column that can simultaneously implement height adjustment and angle adjustment, and the adjustment precision of the steering column is relatively high.

To achieve the foregoing objective, the present disclosure provides a steering column, including a steering shaft, a fixing bracket, a first cylinder, a second cylinder, an angle adjustment motor, an angle adjustment screw-nut assembly, a linkage assembly, a height adjustment motor, and a height adjustment screw-nut assembly, where the second cylinder is arranged in the first cylinder and is slidably sleeved with the first cylinder, the steering shaft runs through the first cylinder and the second cylinder, the steering shaft includes an upper shaft and a lower shaft that are in splined connection, the upper shaft is supported in the second cylinder through a first bearing, the lower shaft is supported in the first cylinder through a second bearing, the first cylinder is hinged to the fixing bracket around a first hinge axis, the angle adjustment motor can drive, through the angle adjustment screw-nut assembly and the linkage assembly, the first cylinder to rotate relative to the fixing bracket, and the height adjustment motor can drive, through the height adjustment screw-nut assembly, the second cylinder to axially move relative to the first cylinder.

In some embodiments, the angle adjustment screw-nut assembly includes an angle adjustment screw and an angle adjustment nut sleeved on the angle adjustment screw, the angle adjustment screw is connected to the angle adjustment motor, the angle adjustment nut is connected to the fixing bracket through the linkage assembly, one connecting rod of the linkage assembly is hinged to the first cylinder around a second hinge axis, and the first hinge axis is parallel to the second hinge axis.

In some embodiments, an axis of the angle adjustment screw is perpendicular to the first hinge axis.

In some embodiments, the steering column further includes an angle adjustment motor base, the angle adjustment motor is fixed on the angle adjustment motor base, the angle adjustment motor base is hinged to the first cylinder around a third hinge axis, and the third hinge axis is parallel to the first hinge axis.

In some embodiments, the linkage assembly includes a first connecting rod and a second connecting rod, a first end of the first connecting rod is hinged to the angle adjustment nut around a fourth hinge axis, a second end of the first connecting rod is hinged to a first end of the second connecting rod, a second end of the second connecting rod is hinged to the fixing bracket around a fifth hinge axis, the first hinge axis, the fourth hinge axis, and the fifth hinge axis are parallel to each other, and the first connecting rod is hinged to the first cylinder around the second hinge axis.

In some embodiments, the first connecting rod has a first hinge point connected to the angle adjustment nut, a second hinge point connected to the first cylinder, and a third hinge point connected to the second connecting rod, where connecting lines between the first hinge point, the second hinge point, and the third hinge point form a triangle.

In some embodiments, there are two linkage assemblys, and the two linkage assemblys are respectively arranged on two sides of the angle adjustment nut.

In some embodiments, the height adjustment screw-nut assembly includes a height adjustment screw and a height adjustment nut sleeved on the height adjustment screw, the height adjustment screw is connected to the height adjustment motor, the height adjustment nut is connected to the second cylinder, and an axis of the height adjustment screw is parallel to an axis of the second cylinder.

In some embodiments, the steering column further includes a height adjustment motor base, the height adjustment motor is fixed on the height adjustment motor base, and the height adjustment motor base is fixed on the first cylinder.

In the steering column of the present disclosure, the angle adjustment screw-nut assembly is configured to convert rotary motion of the angle adjustment motor into rectilinear motion of the angle adjustment nut, and the angle adjustment nut drives, through the linkage assembly, the first cylinder to rotate around the first hinge axis. The cooperation between the angle adjustment screw-nut assembly and the linkage assembly can significantly improve the angle adjustment precision and the motion reliability in the adjustment process. The height adjustment precision can be improved by using the height adjustment screw-nut assembly.

The present disclosure further provides a vehicle, including the foregoing steering column.

Other features and advantages of the present disclosure are described in detail in the following specific implementations.

