Patent ID: 8403797
Filing Date: 2013-03-26
Classification: F16H

Abstract:
1. A gear train apparatus in a multistage transmission for vehicles, comprising: input and output shafts disposed parallel with each other; a complex planetary gear device concentrically mounted with regard to the output shaft and having four rotary components including one rotary component coupled to the output shaft; first to third pairs of external gears designed to allow the input shaft to mesh with respective three rotary components of the complex planetary gear device; first to third clutches designed to selectively interrupt the coupling of the three rotary components of the complex planetary gear device to the input shaft via the first to third pairs of external gears respectively; a train of external gears designed to allow either of the rotary components of the complex planetary gear device, other than the rotary component coupled to the output shaft, and the input shaft to engage in a series of two external meshes; a fourth clutch designed to selectively interrupt a power transmission path of the train of external gears; and first and second brakes designed to respectively selectively interrupt the rotation of the second and third pairs of external gears.