Automobile hub bearing with self-detachable lock catch-retainer

Abstract

The invention discloses an automobile hub bearing with a self-detachable lock catch-retainer. The automobile hub bearing comprises an outer ring, inner rings, a rolling element and a retainer, wherein the number of the inner rings is two, the two inner rings are arranged in parallel, and the outer walls of the two inner rings are both provided with snapping grooves. The automobile hub bearing further comprises a lock catch, wherein the lock catch comprises an annular lock catch body; the inner wall of the lock catch body is provided with snap joints which are snapped in the snapping grooves; the outer wall of the lock catch body is provided with outward-protruding ends which are circumferentially distributed along the outer wall of the lock catch body; the inner wall of the retainer is provided with inward-protruding ends which are circumferentially distributed along the inner wall of the retainer; the end parts of both the outward-protruding ends and the inward-protruding ends are provided with tipped parts, and the tipped parts of the outward-protruding ends are connected with the tipped parts of the inward-protruding ends; and the lock catch and the retainer are integrally molded. The automobile hub bearing provided by the invention enables installation efficiency to be improved, prevents damage to a working surface due to friction between the lock catch and the working surface, and lowers pollution to a raceway during assembling.

Description

technical field [0001] The invention belongs to the technical field of automobile manufacturing, in particular to an automobile wheel hub bearing with a self-separating lock retainer. Background technique [0002] Hub bearing is one of the key parts of the car. Its function is to carry weight and provide precise guidance for the rotation of the hub. It is required to bear not only axial load but also radial load. [0003] With the rapid development of the automobile industry, higher requirements are put forward for automobile wheel bearings, such as reducing weight, reducing friction torque, reducing noise, unitized design, improving product reliability and long life. [0004] Hub bearings are generally composed of inner rings, outer rings, rolling elements, cages, sealing rings, grease, locks and other parts. The main function of the cage is to guide and drive the rolling elements to roll on the correct raceway, and the second is to separate the rolling elements at equal d...

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