Patent ID: 7993234
Filing Date: 2011-08-09
Classification: B62M

Abstract:
1. A transmission operated by a shift lever in a power train device for a transport device of motor type or non-motor type, the transmission comprising: a main shaft rotated by a driving power; a fine adjustment gearshift of differential gear type connected to the main shaft and moved by the shift lever to receive the driving force from any one of two paths and transmit the driving force to any one of two output in multiple stages; a coarse adjustment gearshift of internal gear type being movable on the main shaft by the shift lever and connected to the outputs of the fine adjustment gearshift to receive the driving force from any one of two paths and transmit the driving force to any one of two output in a low or high stage; an output part installed on the main shaft and selectively connected to the outputs of the coarse adjustment gearshift to receive and output the driving force in a cross-coupling power transmitting manner; and a housing enclosing the fine adjustment gearshift, the coarse adjustment gearshift and the output part, in which the fine adjustment gearshift, the coarse adjustment gearshift and the output part are selectively connected to each other by operation of the shift lever to perform multi-stage fine adjustment at the respective low- and high-speed coarse adjustment stages.