Patent ID: 9651117
Date: 2017-05-16
CPC Classifications: F16H

Claim:
1. A planetary gear train of an automatic transmission for a vehicle, the planetary gear train comprising: an input shaft receiving power from an engine; an output shaft configured to output power changed in speed; a first planetary gear set including first, second, and third rotating elements; a second planetary gear set including fourth, fifth, and sixth rotating elements; a third planetary gear set including seventh, eighth, and ninth rotating elements; six control elements which are disposed at positions where the rotating elements are selectively connected to each other; a first rotating shaft which includes the first rotating element and the seventh rotating element, and is selectively connected with the input shaft; a second rotating shaft which includes the second rotating element and the sixth rotating element, and is selectively connected with the first rotating shaft; a third rotating shaft which includes the third rotating element; a fourth rotating shaft which includes the fourth rotating element, and is directly connected with a transmission housing; a fifth rotating shaft which includes the fifth rotating element, and is selectively connected to the input shaft or the fourth rotating shaft; a sixth rotating shaft which includes the eighth rotating element, and is directly connected with the output shaft; and a seventh rotating shaft which includes the ninth rotating element, and is selectively connected to the third rotating shaft or the fifth rotating shaft.