Abnormal sound prevention structure of automobile mechanical steering gear

Abstract

The invention relates to the field of mechanical steering gears of automobile steering systems, and provides an abnormal sound prevention structure of an automobile mechanical steering gear. The abnormal sound prevention structure comprises a steering gear body shell, a small gear shaft, a gear shaft fixing bearing, a gear rack, a clearance adjusting and locking nut and a clearance adjusting nut, the small gear shaft is fixedly arranged in the steering gear body shell through the gear shaft fixing bearing, the outer side of the gear rack is pressed by one end of a gear rack supporting press block, the clearance adjusting nut is screwed on the steering gear body shell and compresses a spring, the other end of the spring is compressed bythe other end of the gear rack supporting press block, two annular grooves are formed in the circumferential face, matched with the steering gear body shell, of the gear rack supporting press block, and are provided with an O-shaped rubber ring I and an O-shaped rubber ring II respectively, the end face, opposite to the clearance adjusting nut, of the gear rack supporting press block, is provided with a third annular groove, and an O-shaped rubber ring III is arranged in the third annular groove. Through the abnormal sound prevention structure, performance requirements for the automobile steering systems can be met, and abnormal sounds of a traditional mechanical steering gear can be reduced or even removedcompletely.

Description

technical field [0001] The invention belongs to the field of a mechanical steering gear of an automobile steering system, and in particular relates to an automobile steering gear. Background technique [0002] The steering gear is an important part of the steering system of the car, and the rack and pinion steering gear is a kind of mechanical steering gear commonly used in the steering system of the car. It also has a direct impact on the quality and driving pleasure of the vehicle. [0003] At present, during the use of the mechanical rack and pinion steering gear, abnormal noise is prone to occur when the car is driving on a bumpy road, and the probability of occurrence is relatively high. The abnormal noise is mainly caused by collisions between the rack support press block and the housing, between the end face of the rack support press block and the gap adjustment nut, and between the rack and pinion. The traditional mechanical rack and pinion steering gear solves the...

AI Technical Summary

Problems solved by technology

The traditional mechanical rack and pinion steering gear solves the abnormal sound by adjusting the gap and adjusting the nut to reduce the gap between the rack and pinion, so that increasing the pre-tightening force and controlling the size between the rack support pressure block and the housing will increase the friction of the steering gear force, so that the movement of the steering pinion and the steering rod is not smooth, which may easily lead to poor steering return, and poor steering friction and center feeling of the whole vehicle

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