Invention Grant
US08641283B2 Hydrodynamic bearing apparatus and spindle motor having the same
失效
流体动力轴承装置和主轴电机具有相同的功能
- Patent Title: Hydrodynamic bearing apparatus and spindle motor having the same
- Patent Title (中): 流体动力轴承装置和主轴电机具有相同的功能
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Application No.: US13444273Application Date: 2012-04-11
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Publication No.: US08641283B2Publication Date: 2014-02-04
- Inventor: Song Bon Oh , Jong Ryeol Oh
- Applicant: Song Bon Oh , Jong Ryeol Oh
- Applicant Address: KR Suwon
- Assignee: Samsung Electro-Mechanics Co., Ltd.
- Current Assignee: Samsung Electro-Mechanics Co., Ltd.
- Current Assignee Address: KR Suwon
- Priority: KR10-2011-0142687 20111226
- Main IPC: F16C32/06
- IPC: F16C32/06 ; F16C33/10 ; F16C17/02
Abstract:
There is provided a hydrodynamic bearing apparatus, including: a shaft; and a sleeve rotatably supporting the shaft, wherein at least one of an outer surface of the shaft and an inner surface of the sleeve includes upper and lower hydrodynamic grooves generating hydrodynamic fluid pressure while the shaft rotates, and at least one of the upper and lower hydrodynamic grooves has a depth of a lower part thereof greater than that of an upper part thereof.
Public/Granted literature
- US20130163902A1 HYDRODYNAMIC BEARING APPARATUS AND SPINDLE MOTOR HAVING THE SAME Public/Granted day:2013-06-27
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