Patent ID: 8957562
Filing Date: 2015-02-17
Classification: H02K,Y10T

Abstract:
1. A stator comprising: a core having a cylindrical portion, a plurality of teeth, and an axis, the teeth being extended from the cylindrical portion toward the axis and spaced apart at equal intervals in a circumferential direction of the cylindrical portion, a plurality of slots each being formed between an adjacent pair of the teeth and extending in the axial direction defined by the axis, the core having a first end at one end in the axial direction and a second end at the opposite end; and a plurality of U-shaped conductors each having a pair of legs and a joint portion for joining the legs together, the pair of legs being inserted in different ones of the slots of the core while being spaced apart at a predetermined slot pitch and a radial pitch, wherein each slot receives four legs, each of the four legs being one leg of the corresponding one of the conductors, the four legs inserted in the slot being arranged in a laminated structure in which the legs are a first layer leg, a second layer leg, a third layer leg, and a fourth layer leg located consecutively from a radially inner side, the joint portions of the conductors being located at the side corresponding to the first end of the core, the distal ends of the legs of the conductors being arranged at the side corresponding to the second end of the core, two of the four conductors corresponding to the legs inserted in one of the slots are overlapped with each other at the joint portions as viewed at least in the circumferential direction, and at least one of the two conductors that are overlapped with each other in the circumferential direction has a recess recessed in the circumferential direction at the joint portion, and the recess is engaged with the joint portion of the other one of the two conductors.