Patent ID: 6316853
Filing Date: 2001-11-13
Classification: G11B

Abstract:
A compact spindle motor assembly for rotating a disc within a disc drive comprising:a housing for said disc having upper and lower casings;a fixed shaft for said motor having upper and lower ends, the lower end of said shaft being fixed to the lower surface of said housing:a spindle hub journaled coaxially about said fixed shaft and supported for rotation thereabout,said spindle hub having an inner bore rotating on bearings, said bearings located between said fixed shaft and said inner bore, and magnet means located adjacent said bearings and supported on an external surface of a lower portion of said inner bore,said spindle hub also supporting said disc on a flange extending out from said inner bore above said magnet means and over a region where stator coils of said motor are located,said stator coils being supported from said lower casing of said motor adjacent said magnet means.