WO2009001960A1 - 流体動圧軸受、この流体動圧軸受を備えたモータ、および、流体動圧軸受の製造方法 - Google Patents

流体動圧軸受、この流体動圧軸受を備えたモータ、および、流体動圧軸受の製造方法 Download PDF

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Publication number
WO2009001960A1
WO2009001960A1 PCT/JP2008/061862 JP2008061862W WO2009001960A1 WO 2009001960 A1 WO2009001960 A1 WO 2009001960A1 JP 2008061862 W JP2008061862 W JP 2008061862W WO 2009001960 A1 WO2009001960 A1 WO 2009001960A1
Authority
WO
WIPO (PCT)
Prior art keywords
dynamic pressure
pressure bearing
fluid dynamic
section
peripheral surface
Prior art date
Application number
PCT/JP2008/061862
Other languages
English (en)
French (fr)
Inventor
Yoichi Sekii
Kazuyoshi Saito
Tsuyoshi Kato
Original Assignee
Nidec Corporation
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 Nidec Corporation filed Critical Nidec Corporation
Publication of WO2009001960A1 publication Critical patent/WO2009001960A1/ja

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
    • 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
    • F16C33/02—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
    • F16C33/1085—Channels or passages to recirculate the liquid in the bearing
    • 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
    • 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

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)

Abstract

　流体動圧軸受２はスリーブの外周面および上面を覆う上キャップ２５、および、上キャップ２５の外周を覆い上側に向かって径が広がる環状テーパ部２４１２を有する。 　上キャップ２５の外周面と環状テーパ部２４１２の内周面２４１４により形成される傾斜状の間隙にて潤滑油を保持するテーパシール部２７１が形成される。 　テーパシール部２７１では、環状テーパ部２４１２の内周面２４１４の上部に第１段差部２４１７が設けられ、上キャップ２５の外周面の上部に第２段差部２５１５が設けられる。第１段差部２４１７および第２段差部２５１５により撥油剤を適切な範囲に容易に塗布することができる。
PCT/JP2008/061862 2007-06-28 2008-06-30 流体動圧軸受、この流体動圧軸受を備えたモータ、および、流体動圧軸受の製造方法 WO2009001960A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JPJP2007-169949 2007-06-28
JP2007169949A JP2009008160A (ja) 2007-06-28 2007-06-28 流体動圧軸受機構、流体動圧軸受機構の製造方法およびモータ

Publications (1)

Publication Number Publication Date
WO2009001960A1 true WO2009001960A1 (ja) 2008-12-31

Family

ID=40185766

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/061862 WO2009001960A1 (ja) 2007-06-28 2008-06-30 流体動圧軸受、この流体動圧軸受を備えたモータ、および、流体動圧軸受の製造方法

Country Status (2)

Country Link
JP (1) JP2009008160A (ja)
WO (1) WO2009001960A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8958174B1 (en) 2013-08-01 2015-02-17 Nidec Corporation Spindle motor and disk drive apparatus
US9154012B2 (en) 2010-03-29 2015-10-06 Ntn Corporation Fluid dynamic bearing device and assembly method for same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8107195B2 (en) * 2009-05-01 2012-01-31 ALPHANA Technology, Co., Ltd. Fluid dynamic bearing unit and disk drive device including the same
JP5528897B2 (ja) * 2010-04-28 2014-06-25 Ｎｔｎ株式会社 流体動圧軸受装置およびその組み立て方法
JP7258050B2 (ja) 2019-01-07 2023-04-14 三菱重工エンジン＆ターボチャージャ株式会社 軸受装置及びこれを備えたターボチャージャ

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06245427A (ja) * 1993-02-15 1994-09-02 Nippon Densan Corp スピンドルモータ
JP2000297818A (ja) * 1999-04-15 2000-10-24 Matsushita Electric Ind Co Ltd 流体軸受装置
JP2001050278A (ja) * 1999-08-04 2001-02-23 Sankyo Seiki Mfg Co Ltd 動圧軸受装置の製造方法および動圧軸受装置
JP2005155912A (ja) * 2003-11-07 2005-06-16 Nippon Densan Corp 流体動圧軸受及びスピンドルモータ
JP2006105332A (ja) * 2004-10-07 2006-04-20 Ntn Corp 動圧軸受装置
JP2008169942A (ja) * 2007-01-12 2008-07-24 Ntn Corp 流体軸受装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06245427A (ja) * 1993-02-15 1994-09-02 Nippon Densan Corp スピンドルモータ
JP2000297818A (ja) * 1999-04-15 2000-10-24 Matsushita Electric Ind Co Ltd 流体軸受装置
JP2001050278A (ja) * 1999-08-04 2001-02-23 Sankyo Seiki Mfg Co Ltd 動圧軸受装置の製造方法および動圧軸受装置
JP2005155912A (ja) * 2003-11-07 2005-06-16 Nippon Densan Corp 流体動圧軸受及びスピンドルモータ
JP2006105332A (ja) * 2004-10-07 2006-04-20 Ntn Corp 動圧軸受装置
JP2008169942A (ja) * 2007-01-12 2008-07-24 Ntn Corp 流体軸受装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9154012B2 (en) 2010-03-29 2015-10-06 Ntn Corporation Fluid dynamic bearing device and assembly method for same
US8958174B1 (en) 2013-08-01 2015-02-17 Nidec Corporation Spindle motor and disk drive apparatus

Also Published As

Publication number Publication date
JP2009008160A (ja) 2009-01-15

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