JP4473716B2 - 流体動圧軸受装置及び該流体動圧軸受装置を備えたスピンドルモ−タ、記録ディスク駆動装置 - Google Patents

流体動圧軸受装置及び該流体動圧軸受装置を備えたスピンドルモ−タ、記録ディスク駆動装置 Download PDF

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Publication number
JP4473716B2
JP4473716B2 JP2004348135A JP2004348135A JP4473716B2 JP 4473716 B2 JP4473716 B2 JP 4473716B2 JP 2004348135 A JP2004348135 A JP 2004348135A JP 2004348135 A JP2004348135 A JP 2004348135A JP 4473716 B2 JP4473716 B2 JP 4473716B2
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JP
Japan
Prior art keywords
diameter
dynamic pressure
bearing
lubricating oil
side annular
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2004348135A
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English (en)
Japanese (ja)
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JP2006153228A (ja
JP2006153228A5 (enExample
Inventor
陸郎 小原
忠 赤堀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Minebea Co Ltd
Original Assignee
Minebea Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Minebea Co Ltd filed Critical Minebea Co Ltd
Priority to JP2004348135A priority Critical patent/JP4473716B2/ja
Priority to PCT/IB2005/003594 priority patent/WO2006059205A1/en
Priority to US11/666,742 priority patent/US7661882B2/en
Publication of JP2006153228A publication Critical patent/JP2006153228A/ja
Publication of JP2006153228A5 publication Critical patent/JP2006153228A5/ja
Application granted granted Critical
Publication of JP4473716B2 publication Critical patent/JP4473716B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
    • F16C17/102—Sliding-contact bearings for exclusively rotary movement for both radial and axial load with grooves in the bearing surface to generate hydrodynamic pressure
    • F16C17/107—Sliding-contact bearings for exclusively rotary movement for both radial and axial load with grooves in the bearing surface to generate hydrodynamic pressure with at least one surface for radial load and at least one surface for axial load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F16C33/107—Grooves for generating pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/74—Sealings of sliding-contact bearings
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
    • G11B19/2036—Motors characterized by fluid-dynamic bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2370/00—Apparatus relating to physics, e.g. instruments
    • F16C2370/12—Hard disk drives or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Sliding-Contact Bearings (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Motor Or Generator Frames (AREA)
  • Sealing Of Bearings (AREA)
JP2004348135A 2004-12-01 2004-12-01 流体動圧軸受装置及び該流体動圧軸受装置を備えたスピンドルモ−タ、記録ディスク駆動装置 Expired - Fee Related JP4473716B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2004348135A JP4473716B2 (ja) 2004-12-01 2004-12-01 流体動圧軸受装置及び該流体動圧軸受装置を備えたスピンドルモ−タ、記録ディスク駆動装置
PCT/IB2005/003594 WO2006059205A1 (en) 2004-12-01 2005-11-29 Fluid dynamic pressure bearing device, spindle motor provided with the fluid dynamic pressure bearing device, and recording disk drive device
US11/666,742 US7661882B2 (en) 2004-12-01 2005-11-29 Fluid dynamic pressure bearing device, spindle motor provided with the fluid dynamic pressure bearing device, and recording disk drive device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004348135A JP4473716B2 (ja) 2004-12-01 2004-12-01 流体動圧軸受装置及び該流体動圧軸受装置を備えたスピンドルモ−タ、記録ディスク駆動装置

Publications (3)

Publication Number Publication Date
JP2006153228A JP2006153228A (ja) 2006-06-15
JP2006153228A5 JP2006153228A5 (enExample) 2007-11-15
JP4473716B2 true JP4473716B2 (ja) 2010-06-02

Family

ID=36216872

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004348135A Expired - Fee Related JP4473716B2 (ja) 2004-12-01 2004-12-01 流体動圧軸受装置及び該流体動圧軸受装置を備えたスピンドルモ−タ、記録ディスク駆動装置

Country Status (3)

Country Link
US (1) US7661882B2 (enExample)
JP (1) JP4473716B2 (enExample)
WO (1) WO2006059205A1 (enExample)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5274820B2 (ja) * 2007-12-07 2013-08-28 Ｎｔｎ株式会社 流体軸受装置
KR101060802B1 (ko) * 2009-08-06 2011-08-30 삼성전기주식회사 모터 및 기록 디스크 구동장치
DE102009037519A1 (de) * 2009-08-17 2011-02-24 Minebea Co., Ltd. Fluiddynamisches Lagersystem
KR101101644B1 (ko) * 2010-06-28 2012-01-02 삼성전기주식회사 모터 및 기록 디스크 구동장치
KR20130072619A (ko) * 2011-12-22 2013-07-02 삼성전기주식회사 스핀들 모터
KR20130088355A (ko) * 2012-01-31 2013-08-08 삼성전기주식회사 스핀들 모터
KR101434020B1 (ko) * 2012-07-04 2014-08-25 삼성전기주식회사 스핀들 모터
CN102780314B (zh) * 2012-07-11 2014-09-03 中国科学院宁波材料技术与工程研究所 一种直驱式外转子回转驱动装置
DE102013008049A1 (de) * 2013-05-13 2014-11-13 Minebea Co., Ltd. Fluiddynamisches Lagersystem

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0697535A3 (en) 1994-07-22 1996-05-15 Quantum Corp Hydrodynamic bearing unit
US5876124A (en) * 1995-08-25 1999-03-02 Quantum Corporation Hydrodynamic bearing unit
US5634724A (en) * 1995-08-25 1997-06-03 Quantum Corporation Hydrodynamic bearing for spindle motor having high inertial load
US6296391B1 (en) * 1997-06-09 2001-10-02 Sankyo Seiki Mfg. Co., Ltd. Hydrodynamic bearing apparatus
SG92616A1 (en) * 1997-09-12 2002-11-19 Matsushita Electric Industrial Co Ltd Spindle device having a dynamic-pressure-fluid bearing
US6154339A (en) * 1997-11-06 2000-11-28 Seagate Technology Llc. Centrifugal capillary seal for use with fluid dynamic bearings
JPH11230163A (ja) * 1998-02-09 1999-08-27 Matsushita Electric Ind Co Ltd 流体軸受装置
JP3978999B2 (ja) 2000-11-17 2007-09-19 株式会社ジェイテクト 動圧軸受装置
US6814492B2 (en) * 2003-01-30 2004-11-09 Minebea Co., Ltd. Fluid trap for oil migration prevention
US6854889B2 (en) * 2003-03-04 2005-02-15 Nidec Corporation Hydrodynamic pressure bearing, spindle motor in which it is utilized, and disk-drive device furnished with the spindle motor
JP4056416B2 (ja) * 2003-03-24 2008-03-05 日本電産株式会社 動圧軸受及びこれを用いたスピンドルモータ並びにこのスピンドルモータを備えたディスク駆動装置
US6900568B2 (en) * 2003-04-16 2005-05-31 Seagate Technology Llc Fluid dynamic bearing motor configured with an integrated counterplate to contain bearing fluid

Also Published As

Publication number Publication date
WO2006059205A1 (en) 2006-06-08
JP2006153228A (ja) 2006-06-15
US20080095480A1 (en) 2008-04-24
US7661882B2 (en) 2010-02-16

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