Patent ID: 7686733

Claim:
A manual transmission comprising: a transmission case; a main shaft; a hub coupled to an exterior circumference of the main shaft; a gear assembly disposed on one side of the hub and comprising a first speed clutch gear and a planetary gear set, the planetary gear set comprising a ring gear, a pinion gear, a sun gear, and a planetary carrier rotatably supporting the pinion gear; a synchronizer sleeve slidably connected to an exterior circumference of the hub and sliding in an axial direction of the main shaft, the synchronizer sleeve connecting the main shaft with the gear assembly; a synchronizer cone fixed to the first speed clutch gear; and a synchronizer ring applying a frictional force to the synchronizer cone and synchronizing the gear assembly with the main shaft in a shifting process, wherein the ring gear is coupled to the first speed clutch gear, the planetary carrier is fixed to the transmission case, and a reverse speed clutch gear is formed on an exterior circumference of the sun gear.