Torque assist system and automated manual transmission

摘要

A torque assist system (100) mounted on an input shaft (1) of a vehicle transmission, comprising: a torque assist shaft (120) connected to the input shaft (1) through a first terminating part thereof, the torque assist shaft (120) including an outer shaft and an inner shaft which rotates independently from the outer shaft, a portion of the inner shaft being extended out of the outer shaft; a planetary gear set (110) mounted on the inner shaft exposed to a second terminating part of the torque assist shaft (120); a clutch (140) disposed adjacent to the planetary gear set (110) and operated by an external force; and an input gear (150) mounted on the exposed inner shaft of the torque assist shaft (120) and connected to the planetary gear set (110) by the clutch (140) to transmit power to an output gear (160) mounted on the output shaft (2) of the vehicle transmission, wherein even in a state in which the outer shaft does not rotate during shifting, the inner shaft rotates to transmit a driving force to the output shaft through the planetary gear set (110) and the input gear (150).