Permanent magnet motor has pulling device with permanent magnetic pull magnet on side of rotor which interacts magnetically to surfaces on side of stator

摘要

The motor has hub (1) that is provided opposite to a base plate (11), which is connected to a shaft (7). The hub has annular rotor magnet that radially lies opposite to stator lamination stack (4). A pulling device acts in axial direction and operates under influence of magnetic tensile forces which is provided in region between the hub and stationary portion of motor. The pulling device has permanent magnetic pull magnet (12) on side of rotor which interacts magnetically to the surfaces on side of stator. An independent claim is also included for magnetizing device for magnetizing ferromagnetic portion of permanent magnet motor.