Dennison, Schultz, Dougherty & MacDonald
Spindle motor structure
A spindle motor structure includes a rotor, a stator accommodated mainly inside the rotor, and an internal roof magnet located on an inner roof surface of a rotor bell of the rotor. The internal roof magnet further has an inner rim and an outer rim. The inner rim is located projection-wisely within a range of a hollow shaft of the stator. The outer rim is located projection-wisely between an internal peripheral surface of the rotor bell and an inner edge of a coil of the stator. By providing the internal roof magnet inside the rotor bell, a magnetic field to immerse the stator can be generated to damp out possible operational noises and disturbance upon the spindle motor.
Lite-On It Corp.
H H G H
H02K H02K G11B H02K
inventional inventional inventional inventional
Yi-Cheng Chun-Lung Yu-Feng
Tsao Ho Chien