Fan bearing structure
OwnerMing-Shing Kaoinventor
Life of this patent
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Abstract
A highly stable and durable fan bearing structure practical for small electronic device application is disclosed to include a bearing block, which has a stepped hub defining a vertically extending axle hole and an inside annular flange inside the axle hole at a distance away from the top opening of the axle hole, a fan blade assembly, which has permanent magnets mounted in a hollow base block thereof and an axle suspending in the hollow base block and inserted into the axle hole and coupled to the inside annular flange of the stepped hub and kept in coincidence with the central axis of the axle hole, and a stator module accommodated in the hollow base block of the fan blade assembly for acting against the permanent magnets to cause rotation of the fan blade assembly upon connection of an electric current.
Claims13
A fan bearing structure comprising a bearing block, a stator module fixedly mounted on said bearing block, and a fan blade assembly, said fan blade assembly comprising an axle coupled to said bearing block for allowing rotation of said fan blade assembly relative to said stator module and said bearing block upon connection of an electric current to said stator module, wherein:
- said bearing block comprises a stepped hub upwardly extending from a top side thereof, said stepped hub comprising an axle hole axially extending to a top side thereof and an inside annular flange disposed inside said axle hole and spaced below the top side of said stepped hub at a predetermined distance;
- said axle of said fan blade assembly is inserted into said axle hole of said stepped hub and kept in coincidence with the central axis of said axle hole, having a neck coupled to said inside annular flange of said stepped hub.
The fan bearing structure as claimed 1, wherein said bearing block has a magnet fixedly mounted in a bottom side inside said axle hole to support and attract said axle of said fan blade assembly and to keep said axle in coincidence with the central axis of said axle hole.
Dependencies are inferred from the claim text.