Patent ID: 7541713
Filing Date: 2009-06-02
Classification: F04D,H02K

Abstract:
1. A heat dissipating fan comprising: a base unit further comprising a base and an axial sleeve; a dynamic bearing further comprising an bearing body positioned in said axial sleeve and a shaft section positioned at an end of said bearing body; a stator unit being coaxially secured around said axial sleeve; a rotor unit being rotatably positioned to cover said stator unit and jointed to said shaft section, and further comprising a hub having a through hole at a central region thereof, a barrel core being a hollow portion connected to an inner side of said hub with a sidewall extending from an end of said hollow portion for being penetrated by said shaft section to; a connection element being positioned in said barrel core to engage with a distal end of said shaft section; a magnetic ring being positioned at the inner side of said hub for mutually inducing with said stator unit; and a plurality of blades being alternately positioned to space spaced apart around an outer periphery of said hub; wherein, said axial sleeve consists of a plurality of elastic split sleeve sections circularly positioned with a gap spacing apart from each other and a distal end of the respective sleeve section being bent a right angle toward said shaft section; and said connection element surrounds a distal end of said shaft section and is supported with said sidewall.