| 摘要 |
The present invention includes: a first input shaft which delivers the power of an engine; a second input shaft which delivers the power of the engine from the first input shaft; a belt driving unit which is installed between the first input shaft and the second input shaft and performs the operation of a gear shift; a first planet gear set which is connected to the second input shaft; a second planet gear set which is connected to the second input shaft, is connected to the outer circumference side of the first planet gear set, and is connected to an output shaft; and a friction element which is installed between the first planet gear set and the second planet gear set and forms the gear shift stages of two shifts forward and one shift backward. The friction element includes: a first brake which is installed between the first planet gear set and a case; a second brake which is installed between a carrier which connects the first planet gear set with the second planet gear set and the case; and a clutch which is installed between a first sun gear of the first planet gear set and the carrier. |
