Patent ID: 6424071
Filing Date: 2002-07-23
Classification: H02K

Abstract:
An automotive alternator comprising:a rotor forming north-seeking (N) and south-seeking (S) poles about a rotational circumference; a stator comprising: a cylindrical stator core formed in a circumferential direction with a number of slots extending axially, said stator core being disposed radially outside said rotor; and a stator winding wound into said stator core; a bracket for supporting said rotor and said stator; and fans fastened to first and second axial ends of said rotor and including fan blades, wherein said stator winding comprises a number of winding sub-portions, in each of which a strand of wire is wound into said stator core in a connection pattern in which said strand of wire is drawn outside a first slot, is folded back toward said slots, and enters a second slot a predetermined number of slots away, to constitute coil ends, wherein said coil ends are arranged in rows in a circumferential direction at a front end and a rear end of said stator core to constitute front-end and rear-end coil end groups, respectively, inner circumferential surfaces for said front-end and rear-end coil end groups constituting blade-facing surfaces, and wherein said blade-facing surfaces of said front-end and rear-end coil end groups are inclined in an identical direction relative to a rotational direction of said fans.