JP4619763B2 - 流体動圧軸受装置および該流体動圧軸受装置を備えたスピンドルモータ並びに記録ディスク駆動装置 - Google Patents

流体動圧軸受装置および該流体動圧軸受装置を備えたスピンドルモータ並びに記録ディスク駆動装置 Download PDF

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Publication number
JP4619763B2
JP4619763B2 JP2004358324A JP2004358324A JP4619763B2 JP 4619763 B2 JP4619763 B2 JP 4619763B2 JP 2004358324 A JP2004358324 A JP 2004358324A JP 2004358324 A JP2004358324 A JP 2004358324A JP 4619763 B2 JP4619763 B2 JP 4619763B2
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JP
Japan
Prior art keywords
bearing
fluid dynamic
bearing device
peripheral surface
dynamic pressure
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
JP2004358324A
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English (en)
Japanese (ja)
Other versions
JP2006162029A5 (2
JP2006162029A (ja
Inventor
文康 樋口
尚之 近藤
敏光 堀内
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 JP2004358324A priority Critical patent/JP4619763B2/ja
Priority to CN200580042082.5A priority patent/CN100543327C/zh
Priority to DE112005002835T priority patent/DE112005002835T5/de
Priority to PCT/IB2005/003621 priority patent/WO2006061684A1/en
Priority to US11/666,741 priority patent/US7576947B2/en
Publication of JP2006162029A publication Critical patent/JP2006162029A/ja
Publication of JP2006162029A5 publication Critical patent/JP2006162029A5/ja
Application granted granted Critical
Publication of JP4619763B2 publication Critical patent/JP4619763B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • G11B19/2018—Incorporating means for passive damping of vibration, either in the turntable, motor or mounting
    • 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
    • F16C33/72—Sealings
    • F16C33/74—Sealings of sliding-contact bearings
    • F16C33/741—Sealings of sliding-contact bearings by means of a fluid
    • F16C33/743—Sealings of sliding-contact bearings by means of a fluid retained in the sealing gap
    • F16C33/745—Sealings of sliding-contact bearings by means of a fluid retained in the sealing gap by capillary action
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/163—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at only one end of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/085—Structural association with bearings radially supporting the rotary shaft at only one end of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/09—Structural association with bearings with magnetic bearings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Sliding-Contact Bearings (AREA)
  • Rotational Drive Of Disk (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Sealing Of Bearings (AREA)
JP2004358324A 2004-12-10 2004-12-10 流体動圧軸受装置および該流体動圧軸受装置を備えたスピンドルモータ並びに記録ディスク駆動装置 Expired - Fee Related JP4619763B2 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2004358324A JP4619763B2 (ja) 2004-12-10 2004-12-10 流体動圧軸受装置および該流体動圧軸受装置を備えたスピンドルモータ並びに記録ディスク駆動装置
CN200580042082.5A CN100543327C (zh) 2004-12-10 2005-11-30 流体动压轴承装置、具有流体动压轴承装置的主轴电机以及记录盘驱动装置
DE112005002835T DE112005002835T5 (de) 2004-12-10 2005-11-30 Fluiddynamikdruck-Lagervorrichtung, Spindelmotor mit einer Fluiddynamikdruck-Lagervorrichtung und Aufzeichnungsscheiben-Laufwerksvorrichtung
PCT/IB2005/003621 WO2006061684A1 (en) 2004-12-10 2005-11-30 Fluid dynamic pressure bearing device, spindle motor provided with fluid dynamic pressure bearing device, and recording disk drive device
US11/666,741 US7576947B2 (en) 2004-12-10 2005-11-30 Fluid dynamic pressure bearing device, spindle motor provided with fluid dynamic pressure bearing device, and recording disk drive device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004358324A JP4619763B2 (ja) 2004-12-10 2004-12-10 流体動圧軸受装置および該流体動圧軸受装置を備えたスピンドルモータ並びに記録ディスク駆動装置

Publications (3)

Publication Number Publication Date
JP2006162029A JP2006162029A (ja) 2006-06-22
JP2006162029A5 JP2006162029A5 (2) 2007-11-22
JP4619763B2 true JP4619763B2 (ja) 2011-01-26

Family

ID=36204351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004358324A Expired - Fee Related JP4619763B2 (ja) 2004-12-10 2004-12-10 流体動圧軸受装置および該流体動圧軸受装置を備えたスピンドルモータ並びに記録ディスク駆動装置

Country Status (5)

Country Link
US (1) US7576947B2 (2)
JP (1) JP4619763B2 (2)
CN (1) CN100543327C (2)
DE (1) DE112005002835T5 (2)
WO (1) WO2006061684A1 (2)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4428364B2 (ja) 2006-07-05 2010-03-10 ソニー株式会社 軸受ユニット及びこの軸受ユニットを用いたモータ
JP2008248916A (ja) 2007-03-29 2008-10-16 Matsushita Electric Ind Co Ltd 流体軸受装置およびそれを備えたスピンドルモータ、ディスク駆動装置
JP5151268B2 (ja) * 2007-06-25 2013-02-27 日本電産株式会社 モータおよびディスク駆動装置
US8454239B2 (en) * 2007-07-31 2013-06-04 Ntn Corporation Fluid dynamic bearing device and assembling method thereof
JP5578346B2 (ja) * 2009-11-06 2014-08-27 日本電産株式会社 チャッキング装置、ブラシレスモータおよびディスク駆動装置、並びに、チャッキング装置の製造方法
US20110019303A1 (en) * 2008-05-26 2011-01-27 Nidec Corporation Fluid dynamic bearing apparatus, spindle motor, and disk drive apparatus
KR100997189B1 (ko) * 2008-11-14 2010-11-29 삼성전기주식회사 모터
KR101084826B1 (ko) 2010-05-19 2011-11-21 삼성전기주식회사 유체 동압 베어링 모터
KR101829724B1 (ko) * 2010-09-23 2018-02-19 보르그워너 인코퍼레이티드 배기가스 터보차저의 ｖｔｇ 카트리지
KR101090029B1 (ko) * 2010-11-22 2011-12-05 삼성전기주식회사 모터 및 이를 포함하는 기록 디스크 구동장치
DE102010056251A1 (de) * 2010-12-24 2012-06-28 Minebea Co., Ltd. Fluidlager
JP2012225386A (ja) * 2011-04-18 2012-11-15 Ntn Corp 流体動圧軸受装置
US20130342062A1 (en) * 2012-06-22 2013-12-26 Nidec Corporation Motor for rotationally supporting a hard disk
JP2014105783A (ja) * 2012-11-28 2014-06-09 Samsung Electromechanics Japan Advanced Technology Co Ltd 回転機器
US8970984B1 (en) 2014-04-29 2015-03-03 Western Digital Technologies, Inc. Grooved cylindrical seal with increased radial clearance for reduced cost disk drive spindle
DE102014019055A1 (de) * 2014-12-22 2016-06-23 Minebea Co., Ltd. Fluiddynamisches Lagersystem zur Drehlagerung eines Spindelmotors
KR102048574B1 (ko) * 2018-08-23 2020-01-22 엘지전자 주식회사 모터 및 그 제조방법
KR102358176B1 (ko) * 2019-11-18 2022-02-08 엘지전자 주식회사 모터
CN113644780B (zh) * 2021-07-28 2022-06-10 智新科技股份有限公司 一种电机定位装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2937833B2 (ja) 1994-11-15 1999-08-23 株式会社三協精機製作所 軸受のシール装置
JPH08331796A (ja) 1995-06-02 1996-12-13 Matsushita Electric Ind Co Ltd 流体軸受を備えたモータ
JPH1155897A (ja) * 1997-07-28 1999-02-26 Tokyo Parts Ind Co Ltd 動圧軸受型モータ
JP3155529B2 (ja) 1998-08-08 2001-04-09 日本電産株式会社 流体動圧軸受を備えたモータ及びこのモータを備えた記録ディスク駆動装置
KR20020000382A (ko) * 2000-06-24 2002-01-05 이형도 유체 동압 베어링
JP3828437B2 (ja) * 2002-03-07 2006-10-04 日本電産株式会社 スピンドルモータ及びこれを備えたディスク駆動装置
US20030202721A1 (en) * 2002-04-30 2003-10-30 Minebea Co., Ltd. Spindle motor having a fluid dynamic bearing system
US7059771B2 (en) * 2002-05-17 2006-06-13 Nidec Sankyo Corporation Motors with oil dynamic pressure bearing, oil dynamic pressure bearing devices and method for manufacturing the same
US6949852B2 (en) * 2002-06-12 2005-09-27 Seagate Technology Llc Low profile thrust journal plate fluid dynamic bearing motor
US6939046B2 (en) * 2002-07-15 2005-09-06 Minebea Co., Ltd. Hydrodynamic bearing, spindle motor and hard disk drive
US6948852B2 (en) * 2002-07-15 2005-09-27 Minebea Co., Ltd. Hydrodynamic bearing, spindle motor and hard disk drive
JP4236891B2 (ja) * 2002-09-26 2009-03-11 Ｎｔｎ株式会社 動圧軸受装置
US7492548B2 (en) * 2003-04-24 2009-02-17 Matsushita Electric Industrial Co., Ltd. Hydrodynamic bearing device and disk rotating apparatus
JP2005045924A (ja) * 2003-07-22 2005-02-17 Nippon Densan Corp スピンドルモータ、このスピンドルモータに適用されるロータの製造方法、及びこのスピンドルモータを備えたハードディスク駆動装置
JP4639833B2 (ja) * 2004-06-23 2011-02-23 日本電産株式会社 スピンドルモータ及びこのスピンドルモータを備えた記録ディスク駆動装置

Also Published As

Publication number Publication date
CN100543327C (zh) 2009-09-23
US7576947B2 (en) 2009-08-18
JP2006162029A (ja) 2006-06-22
DE112005002835T5 (de) 2007-11-29
CN101072954A (zh) 2007-11-14
WO2006061684A1 (en) 2006-06-15
US20080130168A1 (en) 2008-06-05

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