Patent ID: 7170207
Filing Date: 2007-01-30
Classification: H02K

Abstract:
1. A motor device capable of reducing cogging torque, comprising: a stator assembly, providing a plurality of radial sections with a sector shaped space being apart from each other; and a rotor assembly, being movably disposed in the stator assembly and providing a magnetic component; wherein, the stator assembly further comprises: an insulation frame part, providing a first frame member and a second frame member; a set of silicone steel sheets, being disposed between the frame members in a way of the first frame member being arranged at the top thereof and the second frame member being arranged at the bottom thereof; and a coil, being wound around the insulation frame part; characterized in that a plurality of circular strip members are provided at the bottom of the stator assembly in a way of the respective circular strip member having an end thereof being attached to the circumferential side of the second frame member and another end thereof extending to the sector shaped space; and the circular strip members space apart from each other without contacting the silicone steel sheets; whereby, the circular strip members arc capable of interrupting part of magnetic force resulting from interaction between the stator assembly and the rotor assembly for reducing a cogging torque during the rotor assembly running such that the rotor assembly is able to rotate steadily.