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US 6,386,837 B2Granted
Pivotal structure for an impeller of a miniature heat dissipating fan
AssigneeSunonwealth Electric Machine Industry Co., Ltd.
InventorAlex Horng
Life of this patent
Estimating the term…
Abstract
A miniature heat dissipating fan includes a housing and an impeller. A circuit board and a stator bobbin, a balance plate, and an axle support. The axle support has an axle or a bearing member mounted thereto. The impeller has a bearing member or an axle and arranged in a manner that the axle and the bearing member support each other. The impeller further includes a ring magnet wherein the ring magnet and the balance plate attract each other.
Claims8
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 a bearing member securely mounted thereto, a balance plate made of magnetically permissive material being mounted in the housing;
- and
- an impeller with blades for driving air, the impeller including a shaft in a central portion thereof, the shaft including an end forming a conic supporting section, the bearing member supporting the supporting section of the shaft, 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.
Dependencies are inferred from the claim text.