Patent ID: 9518633
Filing Date: 2016-12-13
CPC Classification: F16H

Claim Text:
1. A power transmission apparatus for a vehicle comprising: a first input shaft selectively connected to a power source through a first clutch; a second input shaft selectively connected to the power source through a second clutch; first and second output shafts disposed in parallel with the first and second input shafts; a first set of input gears fixedly disposed on the first input shaft and including first, second, third, and fourth input gears; a second set of input gears fixedly disposed on the second input shaft and including fifth and sixth input gears; a first set of speed gears rotatably disposed on the first output shaft and including a first speed gear engaged with the second input gear, a second speed gear engaged with the fifth input gear, a fourth speed gear engaged with the sixth input gear, and a fifth speed gear engaged with the fourth input gear; a second set of speed gears rotatably disposed on the second output shaft and including a third speed gear engaged with the third input gear, a sixth speed gear engaged with the sixth input gear, and a seventh speed gear engaged with the first input gear; a first set of synchronizers including a first synchronizer selectively connecting the first speed gear or the fifth speed gear to the first output shaft, and a second synchronizer selectively connecting the second speed gear or the fourth speed gear to the first output shaft; a second set of synchronizers including a third synchronizer selectively connecting the third speed gear or the seventh speed gear to the second output shaft, and a fourth synchronizer selectively connecting the sixth speed gear to the second output shaft; and a reverse speed output unit including a reverse idle shaft disposed in parallel with the first and second output shafts, a first idle gear engaged with the first input gear, and a second idle gear engaged with the second speed gear or the fourth speed gear, wherein one of the first idle gear and the second idle gear is fixedly disposed on the reverse idle shaft and another of the first idle gear and the second idle gear is rotatably disposed on the reverse idle shaft, and wherein the reverse speed output unit includes a further synchronizer selectively connecting the another of the first idle gear and the second idle gear to the reverse idle shaft.