Patent ID: 7003867
Filing Date: 2006-02-28
Classification: H02K,Y10T

Abstract:
1. A method for winding coils on a rotor core, wherein the rotor core includes a ring body and a plurality of teeth extending radially outward from an outer circumference of the ring body, wherein each tooth includes a coil winding portion about which a coil is wound, wherein the coil winding portion includes a proximal section and a distal section, the proximal section being coupled to the ring body, and the distal section being located radially outward of the proximal section, wherein a magnetism converging section is provided at the distal section of the coil winding portion, the winding method comprising: preparing a plurality of core members which are assembled to form the rotor core, wherein each core member has a plurality of teeth the number of which is obtained by dividing the total number of the teeth of the rotor core by the number of the core members, and wherein the teeth of each core member are spaced at equal angular intervals; holding with a plurality of jigs one of the core members prior to assembly at the teeth of the core member, wherein said plurality of jigs include at least a first jig and a second jig, wherein the first and second jigs are arranged on opposite sides of the core member and each holds different teeth; and rotating the core member held by the jigs about a rotation axis along the extending direction of at least one of the teeth, thereby winding the wire forming the coil about the one tooth.