Elektronisch kommutierter Außenläufermotor mit einer Leiterplatte

摘要

The motor (21) has an external rotor (22) with a permanent magnet (28) separated from an inner stator (50) by an air gap. An inference element (24) made of magnetic conducting material is fixed at a shaft (34) of external rotor, and the permanent magnet is arranged in the shaft. A printed circuit board (46) is provided at the inner stator, and a through hole (48') is provided in the printed circuit board within a leakage flux area of the permanent magnet. Another through hole of the printed circuit board discharges the electrostatic charge produced during the operation of the motor.