Patent ID: 9133912
Filing Date: 2015-09-15
Classification: F16H

Abstract:
1. A planetary gear train of an automatic transmission for a vehicle, comprising: a first shaft receiving torque from an engine; a second shaft disposed in parallel with the first shaft with a predetermined distance; a first planetary gear set disposed on the first shaft, and including a first rotation element selectively connected to the first shaft, a second rotation element selectively connected to the first shaft or a transmission housing, and a third rotation element operated as an output element; a second planetary gear set disposed on the second shaft, and including a fourth rotation element connected to the first rotation element through a gear and selectively connected to the transmission housing, a fifth rotation element selectively connected to the first shaft through two paths respectively, and a sixth rotation element connected to the third rotation element and directly connected to an output gear; four transfer gears connecting rotation elements of the second planetary gear set with the first shaft and rotation elements of the first planetary gear set; and frictional elements including clutches selectively connecting selected rotation elements with each other or with the first shaft and brakes selectively connecting selected rotation elements with the transmission housing, wherein the first planetary gear set is a single pinion planetary gear set including a first sun gear being the first rotation element, a first planet carrier being the second rotation element, and a first ring gear being the third rotation element, wherein the second planetary gear set is a single pinion planetary gear set including a second sun gear being the fourth rotation element, a second planet carrier being the fifth rotation element, and a second ring gear being the sixth rotation element, and wherein the four transfer gears are externally-meshed gears and comprise: