Zero-gear-backlash phase regulator structure

Abstract

The invention provides a zero-gear-backlash phase regulator structure. The zero-gear-backlash phase regulator structure comprises a shell, a supporting shaft and a driving gear, the supporting shaft comprises a center shaft, an elastic element and an eccentric cover, the center shaft and the shell form a relatively-rotating movable connection structure, the eccentric cover and the driving gear form a relatively-rotating movable connection structure, the elastic element is arranged between the center shaft and the eccentric cover, and the eccentric cover and the center shaft form a relatively-rotating structure; an eccentric structure with the eccentric distance of e1 is formed by a first external circle and a second external circle on the center shaft, an eccentric structure with the eccentric distance of e2 is formed by an external circle of the eccentric cover and an inner hole of the eccentric cover, an eccentric structure with the eccentric distance of e is formed by the shell andthe driving gear, and the sum of e1+e2 is larger than e. Since the supporting shaft structure with the variable eccentric distance is formed, in the working process, the phase regulator can regulate the eccentric distance of the supporting shaft in time according to the actual backlash in the regulator to remove gear clearance, and the zero-gear-backlash phase regulator structure has the protruding advantages that the phase control precision is improved, and the work noise is reduced.

Description

technical field [0001] The invention relates to the field of structural design of a phase adjuster, in particular to a structure of a zero-backlash phase adjuster driven by a motor. Background technique [0002] The traditional phase adjuster adjusts the phase angle of the camshaft relative to the crankshaft through oil pressure. Although it has been maturely applied to the engine, in actual work, the response speed of these traditional phase adjusters is slow and the phase is stable. The performance is poor, and the work is greatly affected by the oil temperature. [0003] The existing electric phase adjuster driven by a motor adopts the single-stage planetary reduction principle of a negative sign mechanism, which has the advantages of small geometric size and the like. This electric phase adjuster consists of two parts, a motor and a phase adjuster. The phase adjuster is a planetary reducer, and there are gear meshing pairs, sliding friction pairs and rolling friction pa...

AI Technical Summary

Problems solved by technology

In the actual use of the existing electric phase adjuster, there are low phase control accuracy, fast gear wear, and large abnormal noise when the phase adjuster is working. The accumulation of these factors will inevitably reduce the performance of the phase adjuster. service life

Images