Hydrodynamisches Lager für einen Spindelmotor

摘要

#CMT# #/CMT# The bearing has a shaft (62) and a bearing bush (60') that engages around the shaft at a small radial distance, whereby a grooved structure (72) is provided on the outer surface of the shaft and/or the inner surface of the bush to form a pressure-generating region. The bearing bush is made in one piece with a flange (60) or a base plate or another fixed frame component of the direct current motor. #CMT# : #/CMT# Independent claims are also included for the following: (a) a spindle motor with an inventive hydrodynamic bearing (b) and disk drive with a spindle motor. #CMT#USE : #/CMT# For a brushless direct current spindle motor for a disk drive. #CMT#ADVANTAGE : #/CMT# Minimal dimensions, making it suitable for use in miniature disk drives, and can be manufactured at acceptable cost. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic sectional representation of a spindle motor with an inventive device (Drawing includes non-English text) 62 : shaft 60' : bearing bush 60 : flange 72 : grooved structure 70 : thrust element 66 : inner surface of bush.