Patent ID: 9118222
Filing Date: 2015-08-25
Classification: H02K

Abstract:
1. An outer rotor-type blushless motor, comprising: a stator including a cylindrical housing having a cylindrical hole, a stator core attached to one end of the housing, and a bearing coaxially incorporated in the cylindrical hole of the hosing, the stator core having stator pole teeth and coils formed on the stator pole teeth; and a rotor including a rotor yoke having a magnet facing the stator pole teeth, a rotor hub being provided to the center of the rotor yoke, and a rotor shaft being connected to the rotor hub and rotatably supported by the bearing, wherein the rotor is assembled to the stator in a state where a first resin washer and a second resin washer contact each other, the first resin washer contacts an end face of the rotor hub, the second resin washer contacts an end face of the bearing incorporated in a center hole of the stator core, and the rotor shaft pierces through the first resin washer, and wherein the second resin washer has an elastic projected section and is retained by fitting the projected section into a concave section formed in an inner wall of the center hole of the stator core.