a steering bearing

Abstract

The invention provides a steering bearing, which belongs to the field of mechanical technical bearings. The utility model solves the problem that the service life of the dust cover is reduced due to the abrasion of the dust cover caused by the long-term use of the existing steering bearing. The oil seal dust cover is interference fit with the drive shaft through the upper area, and the ring surface in the middle area covers the gap between the upper ring of the bearing and the lower ring of the bearing. In addition, the inner wall of the ring structure in the lower area has multiple annular protrusions and There is a certain gap between the outer rings of the lower ring of the bearing, the two do not touch, the gap between the two is sealed by solid lubricating grease, and the design of multiple annular protrusions forms a "maze" to prevent the solid lubricating grease from overflowing and forming an isolation layer In this way, it can not only ensure that the lower area of ​​the oil seal and dust cover is not easy to wear during long-term movement, but also prevent dust from entering the bearing through solid lubricating grease, and the dust-proof lubrication effect is good.

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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