| 摘要 |
A power transfer unit for extracting torque from a transmission of an automobile is comprised of: a casing having a first side having a coupling portion for combining with the transmission and a second side opposed to the first side; a first shaft being rotatably supported by a first bearing sitting on the first side of the casing and a second bearing sitting on the second side of the casing, penetrating the casing from the coupling portion to the second side, and combining with the transmission to receive the torque; a second shaft being rotatably supported by a third bearing sitting on the first side of the casing and a fourth bearing sitting on the second side of the casing and gearing with the first shaft to rotate in parallel with the first shaft, the second shaft comprising a bevel gear; and a third shaft being rotatably supported by the casing and extending in a direction distinct from the first shaft and the second shaft, the third shaft comprising an internal end including a pinion gear in mesh with the bevel gear and an external end led out of the casing, wherein the first bearing is disposed closer to the coupling portion than the bevel gear is. |
