Low-noise anti-vibration worm and gear combination

Abstract

The invention discloses a low-noise anti-vibration worm and gear combination. The combination comprises a gear and a worm which are meshed with each other; each of the two ends of the worm is providedwith a fixed bearing block, the worm is inserted into the two bearing blocks to rotate, a connecting beam is arranged between the two bearing blocks, and a connecting arm is arranged on the connecting beam and is perpendicular to the connecting beam; an annular step concentric with the gear is arranged on the periphery, close to the outer ring of the gear, of the gear; and an elastic arm is arranged at the tail end of the connecting arm, wherein the elastic arm is located on the side, facing the gear, of the connecting arm, a rolling wheel is arranged at the tail end of the elastic arm, and the rolling wheel is attached to the surface, away from the worm, of the annular step. Compared with the prior art, the low-noise anti-vibration worm and gear combination is characterized in that vibration and noise caused by contact friction between the gear and the worm can be reduced to the maximum extent, abrasion between the gear and the worm is avoided, and matching degree between the gear and the worm is improved.

Description

technical field [0001] The invention relates to a turbine-worm combination, in particular to a low-noise anti-vibration turbine-worm combination. Background technique [0002] In the automotive field, the electric power steering system is one of the common power steering systems. It is formed by combining a mechanical system and an electric motor. Most existing mechanical systems use worm gear mechanisms. Due to the influence of factors such as machining errors, assembly errors and working environment, the meshing gap between worm gears and worms has always existed. This gap mainly includes radial meshing gap (ie "radial gap") and meshing side gap (ie "axial gap"). The existence of radial meshing clearance will make the transmission performance of the worm gear and worm worse, and vibration will occur, thereby reducing the steering stability of the vehicle; the existence of meshing backlash will cause problems such as commutation delay, abnormal noise, and increased wear; ...

AI Technical Summary

Problems solved by technology

The existence of radial meshing clearance will make the transmission performance of the worm gear and worm worse, and vibration will occur, thereby reducing the steering stability of the vehicle; the existence of meshing backlash will cause problems such as commutation delay, abnormal noise, and increased wear; How to reduce abnormal noise and wear when gaps exist and cannot be avoided is a technical difficulty

Images