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 of an engine;
• an output shaft disposed in parallel with the input shaft;
• a first planetary gear set including a first sun gear, a first planet carrier, and a first ring gear as rotation elements thereof;
• a second planetary gear set including a second sun gear, a second planet carrier, and a second ring gear as rotation elements thereof;
• and
• a third planetary gear set including a third sun gear, a third planet carrier, and a third ring gear as rotation elements thereof;
• wherein
• a first rotation element being one rotation element of the first planetary gear set and selectively connected to a transmission housing;
• a second rotation element being another rotation element of the first planetary gear set, directly connected to the input shaft, and selectively connected to one rotation element of the second planetary gear set;
• a third rotation element being another rotation element of the second planetary gear set;
• a fourth rotation element being a remaining rotation element of the first planetary gear set and a remaining rotation element of the second planetary gear set directly connected to each other;
• a fifth rotation element being one rotation element of the third planetary gear set, connected to the one rotation element of the second planetary gear set through a first transfer gear, and selectively connected to the input shaft through the first transfer gear;
• a sixth rotation element being another rotation element of the third planetary gear set, directly connected to the output shaft, and selectively connected to the third rotation element through a second transfer gear;
• and
• a seventh rotation element being a remaining rotation element of the third planetary gear set and selectively connected to the first rotation element through a third transfer gear.