gear assembly for seat adjuster

Abstract

A gear assembly for a seat adjuster includes: a gear housing, a worm, a helical gear meshing with the worm, an oscillating gear carried on an eccentric lobe of the helical gear, a pinion plate, a first gear disposed in the gear housing. A ring gear, a second ring gear disposed in the pinion plate, and a pinion member carrying the helical gear and the pinion plate. The oscillating gear includes a first set of oscillating gear teeth and a second set of oscillating gear teeth meshing with the first and second ring gears, respectively. A case-side gear ring disposed in the gear housing defines a portion of the first ring gear, and the gear housing defines another portion of the first ring gear. The pinion plate defines a second ring gear.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application is a continuation-in-part of US Patent Application Serial No. 15 / 404,550, filed January 12, 2017, which claims US Provisional Application No. 62 / filed January 19, 2016 280,332 equity. The entire disclosures of the above applications are incorporated herein by reference. technical field [0003] The present disclosure relates to gear assemblies for seat adjusters, and more particularly to motor-driven gear assemblies for seat adjusters in vehicles. Background technique [0004] This section provides background information related to the present disclosure and is not necessarily prior art. [0005] Vehicles such as automobiles are often equipped with seat adjusters that raise and lower the driver's seat and the passenger's seat. Such seat adjusters may be manually or power-operated. Manually operated seat adjusters typically employ knobs that are manually rotated by the vehicle occupant to raise and l...

AI Technical Summary

Problems solved by technology

Back driving can also occur at a much slower rate The seat mechanism tends to be slowly reverse driven down over time due to gravity plus road vibrations

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