Planetary gear device for vehicle differential gear, has tooth areas and gears with tip diameters that are adapted to each other such that pitch diameter between wheels and gears is arranged between tip and root diameters of areas and gears

摘要

The device (16) has two ring gears (22-25) with different diameters, which mesh with dual planetary wheels (20A-21B). The wheels are formed with tooth areas (20A1-21B1, 20A2-21B2). The planetary wheels are formed as continuous and inclined-toothed gears. A tip diameter of the tooth areas of the wheels and a tip diameter of the ring gears are adapted to each other such that a pitch circle diameter between the wheels and the ring gears is arranged concentrically between the tip diameter and a useable root diameter of the tooth areas of the wheels and the ring gears.