| 摘要 |
A differential which includes a housing (1a, 1b) through which axially extend two shafts (4, 5) for driving the driving wheels of the vehicle, sun gears (7, 8) mounted in the housing (1a, 1b) in coaxial relation to the shafts (4, 5) and connected to rotate with the latter, planet gears (13, 14) journalled in the housing to rotate about a shaft (15) perpendicular to the two shafts (4, 5) and fixed at its ends to the housing, these planet gears (13, 14) being cooperative with the sun gears (7, 8). The sun gears (7, 8) and the planet gears (13, 14) are provided with helicospiral sets of teeth of opposite directions, whose teeth (40, 41) are inclined to an axial plane passing through the teeth at a given angle ( alpha ) as a function of the desired transfer rate for the torque from one shaft (4, 5) to the other (5, 4) and the set of teeth of each sun gear ( 7, 8) and each planet gear (13, 14) has, when viewed in an axial plane of the sun gears (7, 8), a perpendicular section formed by segments of flanks, (18, 20; 25, 26) perpendicular to the axis (OX) of the shafts (4, 5) and segments of flanks (19, 30; 27, 29) parallel to the axis (OX). |
