| 摘要 |
PROBLEM TO BE SOLVED: To reduce vibrations of a crank shaft while keeping stiffness balance of a plate member.SOLUTION: A vehicular drive device has a crank shaft 15 formed with a plurality of crank pins supporting a connecting rod 21; and a drive plate 31 which is provided between the crank shaft 15 and a rotator opposing to the crank shaft 15 in an axial direction, and couples the crank shaft 15 and the rotator. The drive plate 31 is provided with a plurality of opening portions 50a-50d penetrating in a thickness direction and disposed in a circumferential direction. At least any one of the plurality of opening portions 50a-50d is disposed on a reverse phase side of the crank pin P4 disposed on the rotator side of the plurality of crank pins, and is first opening portions 50a, 50b equipped with MASU plate 51, and at least any one of the plurality of opening portions 50a-50d is disposed on the same phase side of the crank pin P4 disposed on the rotator side of the plurality of crank pins, and second opening portions 50c, 50d which is not equipped with the MASU plate 51.SELECTED DRAWING: Figure 4 |
