Rotor core for DC motor, has winding sections which decrease in height in axial direction and increase in height in circumferential direction, with joined core elements having proportion of equally spaced teeth

摘要

The dimension of each winding section continuously increases in the axial direction of the rotor core, from the distal section to the proximal section, and decreases in the circumferential direction of the rotor core from the distal section to the proximal section. The rotor core contains a number of joined core elements, each having a proportion of teeth (23). The teeth of each core element are spaced apart at equal angles. Independent claims are included for a DC motor; a method of winding windings; and for a further rotor core.