US 5,342,256 AGranted

Differential gear system

AssigneeViscodrive GmbH

InventorsPeter Amborn, Wolfgang Hildebrandt

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Abstract

A differential gear system for use in the driveline of a motor vehicle, having a differential carrier (1) rotating in bearings of a differential housing (1) and driven via a driving gear tooth configuration; two axle shaft gears (10, 11) rotating in bearings of the differential carrier, which are coaxial relative to each other; and compensating gears (12, 13) eccentrically supported in, and rotating with, the differential carrier, where each of the compensating gears is in one part meshed with the one axle shaft gear (10) and in another part, with the other axle shaft gear (11), while engaging each other at least indirectly, and where the axle shaft gears (10, 11) have a tooth design which, when under torque, generates an axial thrust, and where friction-reducing means are provided at all face areas of at least the axle shaft gears (10, 11) that are subjected to loads during coasting of the motor vehicle, opposite the mating surfaces of the differential carrier (1) or the respective other axle shaft gear.

Claims12

Dependent claims

A differential gear system for use in the driveline of a motor vehicle, comprising a differential carrier that rotates in bearings of a differential housing and is driven via a drive gear tooth configuration;

two axle shaft gears rotate in the differential carrier and are coaxial relative to each other;
and at least two compensating gears are eccentrically supported in, and rotating with, the differential carrier, one of the compensating gears is meshed with one of said axle shaft gears, and the other compensating gear of the compensating gears is meshed with the other axle shaft gear, while engaging each other at least indirectly, and where the axle shaft gears have a tooth design which, when under torque, generates an axial thrust, said axle shaft gears being supported inside a clear passage of the differential carrier;
surfaces of the axle shaft gears which are subjected to loads with transmission of torque from the wheels to the driveline are arranged towards the center of the differential cage;
and the axle shaft gears surfaces and/or surfaces in contact with said axle shaft gears which are subjected to loads with transmission of torque from the wheels to the driveline are provided with free floating first friction-reducing means positioned between said axle shaft gears and said surfaces in contact with said axle shaft gears, while the axle shaft gears are mutually supportive, either directly, or by means of intermediate elements.

1 more element

two axle shaft gears rotate in the differential carrier and are coaxial relative to each other;
and at least two compensating gears are eccentrically supported in, and rotating with, the differential carrier, one of the compensating gears is meshed with one of said axle shaft gears, and the other compensating gear of the compensating gears is meshed with the other axle shaft gear, while engaging each other at least indirectly, and where the axle shaft gears have a tooth design which, when under torque, generates an axial thrust, said axle shaft gears being supported inside a clear passage of the differential carrier;
surfaces of the axle shaft gears which are subjected to loads with transmission of torque from the wheels to the driveline are arranged towards the center of the differential cage;
and the axle shaft gears surfaces and/or surfaces in contact with said axle shaft gears which are subjected to loads with transmission of torque from the wheels to the driveline are provided with first thrust bearings positioned between said axle shaft gears and said surfaces in contact with said axle shaft gears, while the axle shaft gears are mutually supportive, either directly, or by means of intermediate elements.

1 more element

Dependencies are inferred from the claim text.