Backlash-compensation intelligent electric power steering gear and working method

Abstract

The invention discloses a backlash-compensation intelligent electric power steering gear, which comprises a shell, a motor, a steering shaft, a motor end gear, an idle wheel, a lead screw nut end gearand a lead screw, wherein the steering shaft is connected to the left side of the shell; the motor is fixed on the right side of the shell; the motor end gear is installed on the output shaft of themotor; the lead screw is positioned on the inner side of the shell, and the outer circumference of the right side output end of the lead screw is fixedly provided with the lead screw nut end gear; theidler wheel is meshed and connected between the motor end gear and the lead screw nut end gear in the shell; the side end of the shell is also fixedly provided with a pressure block plug; a pressureblock which is in mutual contact and spaces the radial movement of the idler wheel is arranged in the pressure block plug; and a spiral spring is also placed on the inner side of the pressure block plug and between the pressure block plug and the pressure block. Since the electric power steering gear disclosed by the invention adopts a backlash-compensation structure, the problems that abrasion islikely to generate, a belt is loosened and service life is limited can be solved.

Description

technical field [0001] The invention relates to the field of automobile power steering systems, in particular to a gap compensation structure and working method used on an intelligent electric power steering gear. Background technique [0002] The power-assisted transmission structure is one of the key transmission structures in the rack-assisted electric steering gear. Its function is to transmit the torque generated by the power-assisted motor to the screw and rack, thereby providing steering assistance for the vehicle when turning. The existing power-assisted transmission structure The power-assisted transmission is completed through the synchronous belt. Patent No. CN201720668230.4 discloses a REPS steering gear driven wheel and REPS steering gear transmission structure, and CN201420851671.4 discloses a steering gear with improved noise performance. CN201210463393.0 discloses a An electronic steering gear, the three specific structures include a driving wheel and a drive...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the above-mentioned deficiencies in the background technology, to provide a new type of intelligent electric power steering system for automobile power steering system, which solves the existing problems of easy wear, loose belt and limited service life.

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