Patent ID: 7078836

Claim:
An alternator for a vehicle, comprising: a frame supporting a rotating shaft rotatably and having at least one window for ventilation on an outer peripheral surface of its radial end; and a plurality of stays integrally formed with the frame to fix the alternator to a mounting face of an engine side with fastening members, wherein: the stays have mounting holes, and the mounting holes penetrate through the stays such that a penetrating axis of the mounting hole is orthogonal to the rotating shaft, at least one of the stays has a mounting face, which contacts the mounting face on the engine side and is on the outside from an outermost surface of the frame with respect to a mounting direction in which the alternator is mounted on an engine; and the stays comprise a first stay and a second stay, a level of a mounting face of the first stay being different from a level of a mounting face of the second stay with respect to the mounting direction, and the mounting faces of the first stay and the second stay being arranged such that a fictive line running through a center of the mounting hole on the mounting face of the first stay and a center of the mounting hole on the mounting face of the second stay is on the outside of an outermost face of the frame.