Invention Grant
US07654742B2 Hydrodynamic bearing device, motor, recording disc driving apparatus and assembly jig
有权
流体动力轴承装置，电动机，记录盘驱动装置和装配夹具
- Patent Title: Hydrodynamic bearing device, motor, recording disc driving apparatus and assembly jig
- Patent Title (中): 流体动力轴承装置，电动机，记录盘驱动装置和装配夹具
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Application No.: US11312579Application Date: 2005-12-21
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Publication No.: US07654742B2Publication Date: 2010-02-02
- Inventor: Youichi Nishimoto , Naoshi Kainoh , Tsuyoshi Matsumoto
- Applicant: Youichi Nishimoto , Naoshi Kainoh , Tsuyoshi Matsumoto
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2005-356935 20051209
- Main IPC: F16C33/10
- IPC: F16C33/10
Abstract:
A hydrodynamic bearing device 4 comprises a shaft 41, a second thrust flange 41c, a sleeve 42, a radial bearing 71, and a thrust bearing 73. The second thrust flange 41c is fixed near one end of the shaft 41. A third cylindrical protrusion 42e that protrudes farther in the axial direction than the second thrust flange is fixed to or integrally machined at one end of the sleeve 42. A notch 50 that communicates between a radial inner space and a radial outer space separated by the third cylindrical protrusion 42e is provided to the third cylindrical protrusion 42e.
Public/Granted literature
- US20070133911A1 Hydrodynamic bearing device, motor, recording disc driving apparatus and assembly jig Public/Granted day:2007-06-14
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