WO2008150009A1 - 流体動圧軸受およびモータ - Google Patents

流体動圧軸受およびモータ Download PDF

Info

Publication number
WO2008150009A1
WO2008150009A1 PCT/JP2008/060559 JP2008060559W WO2008150009A1 WO 2008150009 A1 WO2008150009 A1 WO 2008150009A1 JP 2008060559 W JP2008060559 W JP 2008060559W WO 2008150009 A1 WO2008150009 A1 WO 2008150009A1
Authority
WO
WIPO (PCT)
Prior art keywords
dynamic pressure
annular projection
motor
thrust
pressure bearing
Prior art date
Application number
PCT/JP2008/060559
Other languages
English (en)
French (fr)
Inventor
Yoichi Sekii
Kazuyoshi Saito
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 WO2008150009A1 publication Critical patent/WO2008150009A1/ja

Links

Classifications

    • 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
    • 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
    • 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)
  • Power 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では、シャフト２２の下部にスラストプレート２３が取り付けられ、スリーブハウジング２４の一部である有底略円筒状の下キャップ２４２によりスラストプレート２３の下面が覆われる。スラストプレート２３の下面にはスラスト動圧溝が形成され、下キャップ２４２の内底面にはスラスト動圧溝に向かって僅かに突出する環状突部２４２３が設けられる。 　環状突部２４２３により、モータの回転時にスラスト動圧が高められる。環状突部２４２３は下キャップ２４２がプレス加工にて形成される際のエンボス加工により形成、これにより、容易かつ安価に環状突部２４２３を形成することができる。
PCT/JP2008/060559 2007-06-07 2008-06-09 流体動圧軸受およびモータ WO2008150009A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-152038 2007-06-07
JP2007152038A JP2008303989A (ja) 2007-06-07 2007-06-07 流体動圧軸受機構およびモータ

Publications (1)

Publication Number Publication Date
WO2008150009A1 true WO2008150009A1 (ja) 2008-12-11

Family

ID=40093811

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/060559 WO2008150009A1 (ja) 2007-06-07 2008-06-09 流体動圧軸受およびモータ

Country Status (2)

Country Link
JP (1) JP2008303989A (ja)
WO (1) WO2008150009A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101060802B1 (ko) 2009-08-06 2011-08-30 삼성전기주식회사 모터 및 기록 디스크 구동장치

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08247137A (ja) * 1995-03-14 1996-09-24 Hitachi Ltd スピンドルユニット
JP2002070863A (ja) * 2000-08-28 2002-03-08 Matsushita Electric Ind Co Ltd 動圧流体スラスト軸受装置
JP2002101602A (ja) * 2000-09-22 2002-04-05 Sony Corp モータ
JP2003056568A (ja) * 2001-08-20 2003-02-26 Kato Seisakusho:Kk 板金部品のボス部の内面に固着された軸受ブッシュを形成する方法
JP2004245248A (ja) * 2003-02-10 2004-09-02 Nippon Densan Corp 軸受機構、モータおよびディスク駆動装置
JP2005187878A (ja) * 2003-12-25 2005-07-14 Sumitomo Metal Ind Ltd 電着塗装用接合品およびその製造法と自動車車体
JP2005264983A (ja) * 2004-03-16 2005-09-29 Ntn Corp 動圧軸受装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08247137A (ja) * 1995-03-14 1996-09-24 Hitachi Ltd スピンドルユニット
JP2002070863A (ja) * 2000-08-28 2002-03-08 Matsushita Electric Ind Co Ltd 動圧流体スラスト軸受装置
JP2002101602A (ja) * 2000-09-22 2002-04-05 Sony Corp モータ
JP2003056568A (ja) * 2001-08-20 2003-02-26 Kato Seisakusho:Kk 板金部品のボス部の内面に固着された軸受ブッシュを形成する方法
JP2004245248A (ja) * 2003-02-10 2004-09-02 Nippon Densan Corp 軸受機構、モータおよびディスク駆動装置
JP2005187878A (ja) * 2003-12-25 2005-07-14 Sumitomo Metal Ind Ltd 電着塗装用接合品およびその製造法と自動車車体
JP2005264983A (ja) * 2004-03-16 2005-09-29 Ntn Corp 動圧軸受装置

Also Published As

Publication number Publication date
JP2008303989A (ja) 2008-12-18

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