Patent ID: 6459186
Filing Date: 2002-10-01
Classification: H02K

Abstract:
An AC generator for a vehicle comprising:a rotor which functions as a field; a stator disposed around the rotor, the stator comprising a laminated stator core having a plurality of slots, a stator winding housed in the slots, and an insulator for insulating the stator winding from the stator core; and a frame for supporting the rotor and the stator; wherein each of the slots is defined by circumferentially opposing side walls and radially opposing inner and outer walls, the inner wall defining an opening having a narrower circumferential width than a distance of the side walls, and wherein the stator winding comprises a plurality of electric conductors which have a smaller cross section than the width of the opening defined on the inner wall, and are arranged side by side to form at least two circumferentially extending trains in each of the slots and at least two radially extending trains in each of the slots, at least two of the electric conductors being arranged on each of the circumferentially extending trains and the radially extending trains, the electric conductors arranged on the circumferentially extending trains and the insulator being positioned between the side walls of the slot to be in contact with each other at circumferentially opposing surfaces and to form at least two bridges bridging between the side walls, and the electric conductors arranged on the radially extending trains and the insulator being positioned between the inner and outer walls of the slot to be in contact with each other at radially opposing surfaces and to form at least two bridges bridging between the inner and outer walls.