Patent ID: 6290471
Filing Date: 2001-09-18
Classification: F04D,F05D,F16C

Abstract:
A miniature heat dissipating fan comprising:a housing including a circuit board and a stator bobbin mounted therein, an axle support being mounted in the housing and including an axle securely mounted thereto, the axle including an end forming a conic supporting section, a balance plate made of magnetically permissive material being mounted in the housing; andan impeller with blades for driving air, the impeller including a bearing seat in a central portion thereof, a bearing member being securely mounted in the bearing seat, the bearing member being supported by the conic supporting section of the axle, the impeller further including a ring magnet for interacting with the stator bobbin for induction purpose, the ring magnet and the balance plate attracting each other.