Patent ID: 6577031
Filing Date: 2003-06-10
Classification: H02K,Y10T

Abstract:
A DC fan motor comprising:a stator comprising a printed circuit board, said circuit board having a plurality of components mounted thereon, said components including a stator core having a stator coil, an AC power source connector, a rectifier circuit for rectifying input AC power to obtain a DC high voltage, a step-down circuit for obtaining a DC low voltage from the DC high voltage, and a control circuit for controlling said stator coil, wherein said printed circuit board has a heat shock absorber thereon, said heat shock absorber being attached to a soldered connection of an arbitrary component; a rotor inserted into said stator core; and a bearing frame having a bearing that rotatably holds said rotor; wherein the DC high voltage from said rectifier circuit is supplied to said stator coil as a driving power source and the DC low voltage from said step-down circuit is supplied to said control circuit as a control power source; and wherein said components are molded into one body to form said stator of said DC fan motor.