Patent ID: 8207639
Filing Date: 2012-06-26
Classification: F04D,H02K

Abstract:
1. A motor comprising: a balancing member including a circuit board and a ring coupled to an outer periphery of the circuit board, with each of the circuit board and the ring having a surface, with the balancing member further including a shaft coupling portion, with the surface of the ring being a plate made of magnetically conductive material; a stator coupled to the balancing member and electrically connected to the circuit board; and a rotor including a hub, a shaft, and a permanent magnet, with the shaft and the permanent magnet mounted inside the hub, with the shaft rotatable coupled to the shaft coupling portion, with the permanent magnet including a magnetically attracting face aligned with the ring, with the surface of the circuit board facing the permanent magnet and being coplanar to the surface of the ring facing the permanent magnet.