Spur gear differential for use as axle gear box for passenger car, has spur gear whose tip circle is smaller than root circle of another spur gear, where connection zones of gears extend on axial level of intervention zones

摘要

The differential has circulation planetary gears (P1) of one group (G1) embedded with circulation planetary gears (P2) of another group (G2) over planetary gear connection zones (EP). An output spur gear (1) forms a toothing in which tooth flanks are concavely curved in a radial section. Another output spur gear (2) forms another toothing in which the flanks are convexly curved in the radial section. A tip circle (K1) of the spur gear is smaller than a root circle of another spur gear. The connection zones of gears extend on an axial level of output spur gear intervention zones (EW1).