| 摘要 |
PROBLEM TO BE SOLVED: To provide a power transmission device for suppressing a change of a gap between the rotor and the stator of a dynamo-electric machine. SOLUTION: The power transmission device 10 includes the dynamo-electric machine 20 for outputting mechanical power from the rotor 30, and a clutch mechanism 40 for engaging an input shaft 14 to which the mechanical power is input from a prime mover, with the rotor 30. The clutch mechanism 40 is arranged nearest the side of a rotor flange part 34 between a rotor magnetic path formation holding part 32 and a rotor shaft part 36 and formed in an approximately cylindrical shape with a rotational center axis as an axial center, and has a clutch drum 44 as a cylindrical member to be rotated integrally with the rotor 30. The clutch drum 44 is joined at its end radially inside of the rotational center axis to the rotor shaft part 36 and arranged apart from the rotor flange part 34 in the axial direction of the rotational center axis. COPYRIGHT: (C)2011,JPO&INPIT
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