Electric power steering system and automobile

Abstract

An electric power steering system and an automobile, comprising: a steering gear housing, a worm gear installation cavity and a worm screw installation cavity are arranged in the steering gear housing; a worm gear is installed in the worm gear installation cavity; a worm is installed in the worm gear installation cavity Cavity, the worm wheel and the worm are meshed with each other; the first center distance adjustment mechanism is provided at one axial end of the worm, and the second center distance adjustment mechanism is provided at the other axial end; the first center distance adjustment mechanism, the second center distance adjustment mechanism The two center distance adjustment mechanisms can make the worm deviate from the axis of the worm to swing, so as to realize the adjustment of the meshing center distance between the worm wheel and the worm. The electric power steering system of the present invention can realize the adjustment of the meshing center distance between the worm gear and the worm, so that the meshing center distance of the worm gear and worm can be kept consistent with the center distance between the two cavities of the worm wheel installation chamber and the worm installation chamber, so that no meshing gap will be generated, and avoiding a Noise is generated during the process.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to an electric power steering system and an automobile. Background technique [0002] Electric Power Steering (EPS) is a power steering system that directly relies on the motor to provide auxiliary torque. EPS is mainly composed of a torque sensor, a vehicle speed sensor, an electric motor, an electric power steering, a reduction mechanism, and an electronic control unit (ECU). ) and other components. Among them, the electric power steering housing is provided with a worm gear installation cavity and a worm screw installation cavity. The worm screw installation cavity is installed with a worm, and the worm gear installation cavity is installed with a worm gear. [0003] Due to the influence of factors such as machining error, assembly error and tooling environment, the center distance between the worm gear installation cavity and the worm screw installation cavity will change within a ce...

AI Technical Summary

Problems solved by technology

[0008] The problem to be solved by the present invention is that the meshing center distance of the worm gear and worm is not consistent with the center distance of the two cavities of the worm gear installation chamber and the worm installation chamber, resulting in meshing gaps, which will generate noise during the steering process and affect the comfort of the driver.

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