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WO2008139911A1 - 流体軸受装置 - Google Patents

流体軸受装置 Download PDF

Info

Publication number
WO2008139911A1
WO2008139911A1 PCT/JP2008/058165 JP2008058165W WO2008139911A1 WO 2008139911 A1 WO2008139911 A1 WO 2008139911A1 JP 2008058165 W JP2008058165 W JP 2008058165W WO 2008139911 A1 WO2008139911 A1 WO 2008139911A1
Authority
WO
WIPO (PCT)
Prior art keywords
bottom portion
housing
projecting
bearing device
fluid bearing
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.)
Ceased
Application number
PCT/JP2008/058165
Other languages
English (en)
French (fr)
Inventor
Masaharu Hori
Shigeharu Sumi
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.)
NTN Corp
Nidec Corp
Original Assignee
NTN Corp
Nidec Corp
NTN Toyo Bearing 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 NTN Corp, Nidec Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Priority to US12/595,123 priority Critical patent/US8277126B2/en
Priority to CN2008800150995A priority patent/CN101688561B/zh
Publication of WO2008139911A1 publication Critical patent/WO2008139911A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact 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
    • 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
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and 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
    • 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)
  • Mounting Of Bearings Or Others (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

　ハウジング７の底部７ｂに軸方向下方へ向けた突出部７ｂ３を設け、この突出部７ｂ３の外周面７ｂ３１をブラケット６の内周面６ａに固定する。ハウジング７の底部７ｂにスラスト荷重が負荷されると、その荷重の一部が突出部７ｂ３を介してブラケット６に支持される。そのため、ハウジング７の側部７ａと底部７ｂとの境界部Ｐの強度が増し、過大なスラスト荷重による境界部Ｐの破断を防止することができる。その一方で、底部７ｂの肉厚を不変にできるから、底部７ｂの内端面７ｂ１に形成されたスラスト軸受面の成形収縮による変形を抑えることができる。
PCT/JP2008/058165 2007-05-07 2008-04-28 流体軸受装置 Ceased WO2008139911A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/595,123 US8277126B2 (en) 2007-05-07 2008-04-28 Fluid dynamic bearing device
CN2008800150995A CN101688561B (zh) 2007-05-07 2008-04-28 流体轴承装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007122654A JP5220339B2 (ja) 2007-05-07 2007-05-07 流体軸受装置
JP2007-122654 2007-05-07

Publications (1)

Publication Number Publication Date
WO2008139911A1 true WO2008139911A1 (ja) 2008-11-20

Family

ID=40002125

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/058165 Ceased WO2008139911A1 (ja) 2007-05-07 2008-04-28 流体軸受装置

Country Status (5)

Country Link
US (1) US8277126B2 (ja)
JP (1) JP5220339B2 (ja)
KR (1) KR20090121396A (ja)
CN (1) CN101688561B (ja)
WO (1) WO2008139911A1 (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101300338B1 (ko) * 2011-07-22 2013-08-28 삼성전기주식회사 스핀들 모터
US20140341488A1 (en) * 2013-05-14 2014-11-20 Asia Vital Components Co., Ltd. Oil-retaining bearing and fixing structure thereof
US9418697B2 (en) * 2013-11-19 2016-08-16 Seagate Technology Llc Radial channel with fluid reservoir
JP2019060472A (ja) 2017-09-28 2019-04-18 日本電産株式会社 軸受装置、モータおよびファンモータ

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758177A (en) * 1970-03-12 1973-09-11 Atomic Energy Authority Uk Air bearings
JPH10246223A (ja) * 1997-03-05 1998-09-14 Nippon Seiko Kk 動圧軸受装置
JPH10306822A (ja) * 1997-05-01 1998-11-17 Nippon Seiko Kk 動圧軸受
JPH10318271A (ja) * 1997-05-21 1998-12-02 Nippon Seiko Kk 動圧軸受装置の製造方法
JP2001295846A (ja) * 2000-04-13 2001-10-26 Sankyo Seiki Mfg Co Ltd スラスト動圧軸受装置の製造方法
JP2002168240A (ja) * 2000-11-28 2002-06-14 Ntn Corp 動圧型軸受ユニット
JP2003083347A (ja) * 2001-09-11 2003-03-19 Matsushita Electric Ind Co Ltd 流体軸受装置

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3038105B2 (ja) * 1993-08-27 2000-05-08 株式会社三協精機製作所 流体軸受装置およびモータ
US6033118A (en) 1997-03-05 2000-03-07 Nsk Ltd. Hydro-dynamic fluid bearing device and manufacturing method of the same
JPH10331841A (ja) 1997-05-27 1998-12-15 Sony Corp 動圧流体軸受装置及び動圧流体軸受装置の製造方法
US6390681B1 (en) 1999-04-05 2002-05-21 Ntn Corporation Dynamic pressure bearing-unit
JP2002266861A (ja) * 2001-03-05 2002-09-18 Sankyo Seiki Mfg Co Ltd 流体動圧軸受装置
JP3925155B2 (ja) * 2001-10-24 2007-06-06 ソニー株式会社 軸受けユニットおよび軸受けユニットを有するモータ
US6982513B2 (en) * 2002-09-27 2006-01-03 Nidec Corporation Recording disk drive motor, recording disk drive employing the motor, a method of manufacturing a stator used in the recording disk drive motor, and core plate that is used in the manufacture of the stator
JP2005003042A (ja) * 2003-06-10 2005-01-06 Ntn Corp 動圧軸受装置
JP2005090653A (ja) 2003-09-18 2005-04-07 Ntn Corp 流体軸受装置
JP4583745B2 (ja) * 2003-10-14 2010-11-17 Ｎｔｎ株式会社 動圧軸受装置
CN1306684C (zh) * 2003-11-07 2007-03-21 日本电产株式会社 主轴马达和包括该主轴马达的记录磁盘驱动装置
CN100480522C (zh) 2004-04-09 2009-04-22 Ntn株式会社 动压轴承装置
WO2005098252A1 (ja) 2004-04-09 2005-10-20 Ntn Corporation 動圧軸受装置
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
JP4808457B2 (ja) 2004-09-27 2011-11-02 Ｎｔｎ株式会社 流体軸受装置およびその製造方法
CN1969137B (zh) 2004-09-27 2010-12-01 Ntn株式会社 流体润滑轴承装置
JP2006105237A (ja) * 2004-10-04 2006-04-20 Nippon Densan Corp 流体動圧軸受、この流体動圧軸受を備えた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
JP4899320B2 (ja) * 2005-02-25 2012-03-21 日本電産株式会社 モータユニットおよび記録ディスク駆動装置
JP2007043887A (ja) * 2005-07-06 2007-02-15 Nippon Densan Corp モータ及びディスク駆動装置
JP2008190711A (ja) * 2006-07-21 2008-08-21 Ntn Corp 動圧軸受装置の製造方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758177A (en) * 1970-03-12 1973-09-11 Atomic Energy Authority Uk Air bearings
JPH10246223A (ja) * 1997-03-05 1998-09-14 Nippon Seiko Kk 動圧軸受装置
JPH10306822A (ja) * 1997-05-01 1998-11-17 Nippon Seiko Kk 動圧軸受
JPH10318271A (ja) * 1997-05-21 1998-12-02 Nippon Seiko Kk 動圧軸受装置の製造方法
JP2001295846A (ja) * 2000-04-13 2001-10-26 Sankyo Seiki Mfg Co Ltd スラスト動圧軸受装置の製造方法
JP2002168240A (ja) * 2000-11-28 2002-06-14 Ntn Corp 動圧型軸受ユニット
JP2003083347A (ja) * 2001-09-11 2003-03-19 Matsushita Electric Ind Co Ltd 流体軸受装置

Also Published As

Publication number Publication date
US8277126B2 (en) 2012-10-02
JP2008275130A (ja) 2008-11-13
CN101688561B (zh) 2012-08-08
US20100166345A1 (en) 2010-07-01
KR20090121396A (ko) 2009-11-25
CN101688561A (zh) 2010-03-31
JP5220339B2 (ja) 2013-06-26

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