Planetary gear train of automatic transmission for vehicles

A planetary gear train of an automatic transmission for a vehicle comprising:

• an input shaft receiving torque;
• an output shaft disposed in parallel with and apart from the input shaft;
• a planetary gear set including a first sun gear engaged with a long pinion, a second sun gear engaged with a short pinion, a common planet carrier rotatably supporting the short pinion and the long pinion, and a common ring gear engaged with the long pinion as rotation elements thereof;
• a first rotation shaft directly connected to the first sun gear and selectively connectable to the input shaft;
• a second rotation shaft directly connected to the common planet carrier and directly connected to the output shaft;
• a third rotation shaft directly connected to the common ring gear and selectively connectable to the input shaft or to a transmission housing;
• a fourth rotation shaft directly connected to the second sun gear and selectively connectable to the input shaft through any one of first and second paths or to the transmission housing;
• a dog clutch selectively connecting the input shaft to the fourth rotation shaft through any one of the first and second paths;
• a first transfer gear including a first transfer driver gear and a first transfer driven gear engaged to each other and disposed on the first path;
• a second transfer gear including a second transfer driver gear and a second transfer driven gear engaged to each other and disposed on the second path;
• and
• a third transfer gear including a third transfer driver gear and a third transfer driven gear engaged to each other and disposed between the input shaft and the first and third rotation shafts.