Steering bearing

Abstract

The invention provides a steering baring, belongs to the technical field of mechanical bearings and aims to solve the problem that the service life of a dustproof sleeve is shortened because of abrasion to the dustproof sleeve caused by long-term use of the existing steering bearing. An oil sealing dustproof cover is in interference fit with a driving shaft by virtue of an upper area; a middle area annular surface covers a gap between an upper bearing ring and a lower bearing ring; in addition, a plurality of annular bulges are formed on the inner wall of the lower area annular stricture; a certain gap is formed between the lower area annular structure and the outer ring of the lower bearing ring; the lower area annular structure is in non-contact with the outer ring of the lower bearing ring; the gap between the lower area annular structure and the outer ring of the lower bearing ring is sealed by solid lubrication grease; the annular bulges are designed to form a maze structure, thereby preventing the solid lubrication grease from overflowing and forming an isolation layer; the lower area of the oil sealing dustproof cover is not liable to abrade in the long-time moving process; meanwhile, the solid lubrication grease is used for preventing the dust from entering the bearing; a good dustproof lubrication effect is achieved.

Description

technical field [0001] The invention belongs to the field of mechanical technical bearings, and relates to a steering bearing, in particular to a steering bearing for a vehicle front fork. Background technique [0002] Steering bearings for front forks of motorcycles and electric vehicles are non-standard special bearings. Due to their own characteristics, working conditions and regulations of motorcycle and electric vehicle manufacturers, the product design is different from standard general-purpose bearings. Bearing design gives priority to its rationality, practicability and economy. [0003] As an important part of the steering device, the steering bearing is required to be able to rotate flexibly without stagnation under the combined load conditions of bearing a large axial load and a certain radial load at the same time. At present, in order to meet the technological process of current motorcycle and electric vehicle manufacturers, steering bearings are usually compos...

AI Technical Summary

Problems solved by technology

However, when the sealing sleeve is installed on the steering bearing, it fits with the outer circular surface of the upper ring of the bearing or the outer circular surface of the lower ring of the bearing. During operation, friction occurs between the dust cover and the corresponding surface, which affects the relationship between the upper ring of the bearing and the lower ring of the bearing. Rotation flexibility, long-term use will cause the wear of the dust cover to reduce the service life of the dust cover, thus losing the dustproof effect of the bearing

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