Patent ID: 6441527
Filing Date: 2002-08-27
Classification: H02K

Abstract:
An a.c. generator for a vehicle comprising:a shaft accommodated in a casing and which is fixed to a pulley at one end; a rotator fixed to the shaft; a fan located on an end surface of the rotator in an axial direction; a stator including a stator iron core having a plurality of slots and fixed to the casing, and a stator coil disposed in the slots, wherein the stator coil has a rectangular cross sectional shape formed by a pair of parallel long side surfaces and a pair of parallel short side surfaces, and a width of the long side surfaces is greater than a width of the short side surfaces; and a rectifier electrically connected to the stator coil and located on a side opposite to the pulley, wherein coil ends of the stator coil comprise first portions extending in an axial direction from an outer layer of one of two slots spaced apart from each other by a predetermined pitch and slanting in a circumferential direction, second portions extending in an axial direction from an inner layer of the other of the pair of the slots and slanting in the circumferential direction, and third portions positioned at ends of the coil ends in the axial directions, elongated in the radial direction and connected to ends of the first and second portions in the axial direction, and in the first, second and third portions, outer long side surfaces of the rectangular cross sectional shape of the coil ends of the stator coil arranged to face away from an end surface of the stator in the axial direction along the entire length of the coil end between the two slots, and the long side surfaces face the circumferential direction inside of the slots of the stator iron core.