Planetary gear transmission and electric vehicle

摘要

A planetary gear transmission includes a planetary gear train having a sub gear, a fixed annular gear, at least one planet gear and a planet carrier; a synchronizer configured to be driven into a first coupling state in which it couples the sun gear with a prime mover, and a second coupling state in which it couples the planet carrier with the prime mover; and an actuator configured for selectively driving the synchronizer into one of its first and second coupling states.

主权项

1. A planetary gear transmission comprising:
a planetary gear train which comprises a sun gear rotatable around a central axis, a fixed annular gear disposed coaxially around the sun gear, at least one planet gear meshing between the sun gear and the annular gear, and a planet carrier which carries the at least one planet gear and is rotatable round the central axis of the sun gear; a synchronizer configured for coupling the planetary gear train with a rotary output shaft of a prime mover, the synchronizer being configured to be driven into a first coupling state in which the synchronizer couples the sun gear with the output shaft of the prime mover, and a second coupling state in which the synchronizer couples the planet carrier with the output shaft of the prime mover; and an actuator configured for selectively driving the synchronizer into one of the first and second coupling states, wherein the output shaft of the prime mover is coaxial with an output gear connected to the planet carrier.