Damping and noise reducing device for steering pull rod inner ball joint assembly

Abstract

The invention provides a damping and noise reducing device for a steering pull rod inner ball joint assembly, which is used for reducing noise of a steering gear, improving the NVH (Noise, Vibration and Harshness) performance of an automobile and prolonging the service life of the steering gear. The damping and noise reducing device comprises a ball, an inner ball cup, a rack and a limiting sleeve, wherein the inner ball cup is fixedly connected with the tail end of the rack; the limiting sleeve is sleeved on the rack; a sleeve is further arranged between the front end face of the inner ball cup and the tail end face of the rack; the sleeve is sleeved on the front end part of the inner ball cup; and a spring and an elastic support mechanism of a gasket are arranged between the front end face of the inner ball cup and the inner end face of the sleeve. According to the damping and noise reducing device, the movable sleeve is arranged at the joint of the inner ball cup and the rack, one end of the movable sleeve is sleeved on the inner ball cup, the other end of the movable sleeve is limited through the tail end face of the rack, and the elastic support mechanism is arranged in the sleeve, so that rigid collision between the pull rod inner ball joint assembly and a steering gear shell limiting sleeve is changed into flexible contact, and component wear and noise caused by collision are reduced.

Description

technical field [0001] The invention belongs to the technical field of automobile manufacturing, and in particular relates to a shock-absorbing and noise-reducing device for an inner ball joint assembly of a steering tie rod. Background technique [0002] At present, most passenger cars use rack and pinion steering gears. This kind of steering gear generally uses the inner ball joint assembly of the tie rod and the limit sleeve of the steering gear housing to limit the travel of the rack at the limit position, and the steering gear acts as a limiter. The two parts of the car are both of metal structure, so when they touch, there will be a "gudong, gudong" metal impact sound and vibration of the steering wheel. This sound and vibration will be transmitted to the cab through the body and the steering gear itself, so that the driver feels Fidgeting, while two metal parts often collide will reduce their service life and increase maintenance costs. At present, some steering gea...

AI Technical Summary

Problems solved by technology

At present, some steering gears add plastic material parts in the housing to reduce the impact noise during contact, but because of the limited space in the housing, most steering gears cannot add extra parts to the housing, so as to solve the problem of metal impact noise and vibration become a bottleneck

Images