Balance rings for motors

DETAILED DESCRIPTION It is the primary object of the present invention to provide a motor with a balance ring that may provide a relatively large magnetic attraction area between the balance ring and a rotor of the motor, thereby providing the best positioning and balancing effect for the rotor during rotation of the rotor.
A motor in accordance with the present invention comprises a base plate with an axle seat to which a stator bobbin is mounted.
The stator bobbin comprises an axle hole for rotatably receiving a shaft of a rotor.
The rotor comprises a permanent ring magnet.
A balance ring is mounted to the base plate and comprises an upright annular wall and an annular bottom wall.
The upright annular wall of the balance ring and a lower section of the permanent ring magnet attract each other while the annular bottom wall of the balance ring and a lower end face of the permanent ring magnet attract each other.
Other objects, specific advantages, and novel features of the invention will become more apparent from the following detailed description and preferable embodiments when taken in conjunction with the accompanying drawings.