Patent ID: 7084544
Filing Date: 2006-08-01
Classification: H02K

Abstract:
1. A brushless DC (BLDC) motor, comprising: a rotor comprising a permanent magnet and a rotor core, for forming a magnetic field; a stator comprising an armature coil and an armature yoke, for forming a rotating magnetic field; a first assembly member formed of resin and molded by an injection molding process, coupled by a first coupling unit to a top end of the armature yoke; and a second assembly member formed of resin and molded by an injection molding process, coupled by a second coupling unit to a bottom end of the armature yoke, wherein each of said assembly members comprises a ring shape coaxially provided to the armature yoke, and each of the assembly members comprises a plurality of projections formed at an inner circumference thereof with predetermined distance therebetween, wherein each of said first and second coupling units comprises: