Invention Grant
US08107190B2 Fluid bearing device, method of manufacturing the same, and disk drive device
有权
流体轴承装置及其制造方法以及磁盘驱动装置
- Patent Title: Fluid bearing device, method of manufacturing the same, and disk drive device
- Patent Title (中): 流体轴承装置及其制造方法以及磁盘驱动装置
-
Application No.: US12066597Application Date: 2006-09-11
-
Publication No.: US08107190B2Publication Date: 2012-01-31
- Inventor: Kenji Ito , Fuyuki Ito
- Applicant: Kenji Ito , Fuyuki Ito
- Applicant Address: JP Osaka-shi
- Assignee: NTN Corporation
- Current Assignee: NTN Corporation
- Current Assignee Address: JP Osaka-shi
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2005-267144 20050914; JP2005-293882 20051006; JP2005-293890 20051006
- International Application: PCT/JP2006/317961 WO 20060911
- International Announcement: WO2007/032299 WO 20070322
- Main IPC: G11B17/02
- IPC: G11B17/02 ; H02K15/12 ; F16C33/00
Abstract:
Provided is a fluid bearing device with a hub part having high molding precision and dimensional stability and capable of being produced at low cost. An annular gate (14) is formed at a portion of a cavity (15) corresponding to an outer peripheral edge portion of a lower end surface (10c1) of a flange part (10c), and a molten resin (P) is filled into the cavity (15) through the annular gate (14) to form a hub part (10) made of resin. The hub part (10) molded by the injection molding exhibits a radial resin orientation through an entire periphery thereof. Further, an annular gate trace (16) is formed at the outer peripheral edge portion of the lower end surface (10c1) of the flange part (10c) of the hub part (10).
Public/Granted literature
- US20090284866A1 FLUID BEARING DEVICE, METHOD OF MANUFACTURING THE SAME, AND DISK DRIVE DEVICE Public/Granted day:2009-11-19
Information query
IPC分类:
