The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 20, 2014
Filed:
Aug. 16, 2011
Young Ha Park, Gyunggi-do, KR;
Young Ha Park, Gyunggi-do, KR;
Samsung Electro-Mechanics Co., Ltd., Gyunggi-Do, KR;
Abstract
Disclosed herein is a spindle motor including a rotating part in which a hub is coupled to a rotating shaft and a fixing part in which a sleeve is coupled to the rotating shaft, wherein the rotating shaft has a thrust hydrodynamic bearing part formed on a lower end thereof, and the thrust hydrodynamic bearing part has a scroll groove formed therein. The thrust hydrodynamic bearing part of the spindle motor is formed in a micro-gap between a lower portion of the rotating shaft and an upper portion of a support to reduce frictional force, thereby making it possible to increase efficiency in power consumption, assembling accuracy is mitigated, thereby making it possible to increase a degree of freedom in design, the scroll groove is formed in the thrust hydrodynamic bearing part, thereby making it possible to solve problems of rotation unbalance and dynamic pressure unbalance.