DE69017248D1 - Spindelmotor. - Google Patents

Spindelmotor.

Info

Publication number
DE69017248D1
DE69017248D1 DE69017248T DE69017248T DE69017248D1 DE 69017248 D1 DE69017248 D1 DE 69017248D1 DE 69017248 T DE69017248 T DE 69017248T DE 69017248 T DE69017248 T DE 69017248T DE 69017248 D1 DE69017248 D1 DE 69017248D1
Authority
DE
Germany
Prior art keywords
rotor
secured
stator
stator coil
radial
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
DE69017248T
Other languages
English (en)
Other versions
DE69017248T2 (de
Inventor
Yasushi Hisabe
Noriyuki Osada
Toshihiro Ohtani
Masahiko Kishi
Yoshio Sato
Daisuke Konno
Sachihiko Miwa
Toshiya Kanamori
Shunichi Aiyoshizawa
Kazuyuki Kasahara
Kazuto Hirokawa
Yumiko Noda
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.)
Ebara Corp
Original Assignee
Ebara Corp
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 Ebara Corp filed Critical Ebara Corp
Application granted granted Critical
Publication of DE69017248D1 publication Critical patent/DE69017248D1/de
Publication of DE69017248T2 publication Critical patent/DE69017248T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/02—Sliding-contact bearings
    • F16C25/04—Sliding-contact bearings self-adjusting
    • F16C25/045—Sliding-contact bearings self-adjusting with magnetic means to preload 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
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/08—Elastic or yielding bearings or bearing supports, for exclusively rotary movement primarily for axial load, e.g. for vertically-arranged shafts
    • 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
    • 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
    • H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
    • H02K5/1677—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
    • 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
    • F16C2206/00—Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
    • F16C2206/40—Ceramics, e.g. carbides, nitrides, oxides, borides of a metal
    • 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
    • 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
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
    • F16C27/063—Sliding contact bearings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Power Engineering (AREA)
  • Sliding-Contact Bearings (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Turning (AREA)
  • Motor Or Generator Frames (AREA)
DE69017248T 1989-04-12 1990-04-11 Spindelmotor. Expired - Fee Related DE69017248T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP9216189 1989-04-12
JP17964789 1989-07-12
JP20507789 1989-08-08
JP22367989 1989-08-30

Publications (2)

Publication Number Publication Date
DE69017248D1 true DE69017248D1 (de) 1995-04-06
DE69017248T2 DE69017248T2 (de) 1995-10-26

Family

ID=27468002

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69017248T Expired - Fee Related DE69017248T2 (de) 1989-04-12 1990-04-11 Spindelmotor.

Country Status (5)

Country Link
US (1) US4998033A (de)
EP (1) EP0392500B1 (de)
AT (1) ATE119306T1 (de)
DE (1) DE69017248T2 (de)
ES (1) ES2071696T3 (de)

Families Citing this family (54)

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USRE34684E (en) * 1987-05-08 1994-08-02 Nagano Nidec Corporation Drive motor for magnetic disks, optical disks, and magneto-optical disks
DE69003619T2 (de) * 1989-07-24 1994-04-28 Ebara Corp Spindelmotor.
US5193084A (en) * 1989-11-15 1993-03-09 U.S. Philips Corporation Device for rotating a disc-shaped information carrier including a turntable and frame
JPH068647B2 (ja) * 1990-06-27 1994-02-02 株式会社荏原製作所 スラスト動圧軸受の起動・停止装置
DE4121428A1 (de) * 1991-06-28 1993-01-07 Papst Motoren Gmbh & Co Kg Spindelmotor, insbesondere fuer plattenspeicher
DE4221281A1 (de) * 1991-06-29 1993-01-07 Papst Motoren Gmbh & Co Kg Plattenspeicherantrieb
DE4221429C2 (de) * 1991-07-01 1999-01-14 Papst Motoren Gmbh & Co Kg Plattenspeicherantrieb, insbesondere für Festplattenspeicher
EP0541852B1 (de) * 1991-11-14 1997-04-23 Digital Equipment International Limited Spindel- und Nabenausrüstung
US5328272A (en) * 1991-12-23 1994-07-12 International Business Machines Spindle system for a disk drive
JPH05240241A (ja) * 1992-02-28 1993-09-17 Ebara Corp スピンドルモータ
US5473485A (en) * 1992-03-06 1995-12-05 Read-Rite Corporation Tripad air bearing magnetic head slider
JP2696033B2 (ja) * 1992-03-30 1998-01-14 株式会社東芝 ディスク装置用スピンドルモータ
US5161900A (en) * 1992-04-10 1992-11-10 International Business Machines, Corp. Self-contained low power fluid bearing and bearing seal
US5559382A (en) * 1992-10-01 1996-09-24 Nidec Corporation Spindle motor
JP2500731B2 (ja) * 1992-11-12 1996-05-29 日本電気株式会社 磁気ディスク装置用スピンドルモ―タ
JPH06173944A (ja) * 1992-12-03 1994-06-21 Ebara Corp 気体動圧軸受
US5283491A (en) * 1993-01-11 1994-02-01 Maxtor Corporation Air-bearing motor assembly for magnetic recording systems
EP0658895B1 (de) * 1993-12-14 2000-07-05 Hitachi, Ltd. Aufzeichnungsplattengerät und rotierende Halterungsstruktur dafür
US5973878A (en) * 1993-12-14 1999-10-26 Hitachi, Ltd. Recording disk apparatus and rotational supporting structure therefor, having a magnetic lubricant seal which is inclined
DE4401262C2 (de) * 1994-01-18 1997-07-03 Langenbeck Peter Aerostatische und aerodynamische Lagerung eines Motors
EP0670621B1 (de) * 1994-03-04 2000-12-06 Philips Patentverwaltung GmbH Elektromotor mit einem Stator und einem Rotor
JPH0833268A (ja) * 1994-07-19 1996-02-02 Toshiba Corp アキシャルギャップ形モータ及びポリゴンミラー駆動用スキャナモータ
US5500780A (en) * 1994-08-05 1996-03-19 International Business Machines Corporation Disk drive spindle motor having split windings for each phase
US6119348A (en) * 1996-12-16 2000-09-19 Seagate Technology Llc Air gaging for setting gaps in hydrodynamic bearings
US5921731A (en) * 1996-12-31 1999-07-13 The Ingersoll Milling Machine Company High speed hydrostatic spindle
US6036413A (en) * 1997-01-02 2000-03-14 The Ingersoll Milling Machine Company High speed hydrodynamic spindle
US6025665A (en) * 1997-02-21 2000-02-15 Emerson Electric Co. Rotating machine for use in a pressurized fluid system
US6078121A (en) * 1997-02-21 2000-06-20 Emerson Electric Co. Rotor assembly for a rotating machine
US5834869A (en) * 1997-06-02 1998-11-10 Emerson Electric Co. Blower motor housing
US5957589A (en) * 1997-12-10 1999-09-28 International Business Machine Corporation Fluid bearing seal and support structure
US6148501A (en) * 1998-04-14 2000-11-21 Seagate Technology Llc Fabrication means for in-hub spindle with separate fluid dynamic bearings
JP2000074043A (ja) * 1998-06-17 2000-03-07 Mitsubishi Electric Corp スピンドルモ―タ
US6456458B1 (en) * 1998-08-08 2002-09-24 Nidec Corporation Disk-drive motor rotating on a magnetically counterbalanced single hydrodynamic thrust bearing
JP3466945B2 (ja) * 1999-01-05 2003-11-17 日本電産株式会社 記録ディスク駆動用モータ及びこれを備えた記録ディスク駆動装置
JP2000350408A (ja) * 1999-03-29 2000-12-15 Nippon Densan Corp 記録ディスク駆動用モータ
JP2003222124A (ja) 1999-07-14 2003-08-08 Sumitomo Electric Ind Ltd スピンドルモータ
US6313967B1 (en) 1999-08-03 2001-11-06 Maxtor Corporation Disk drive spindle air bearing
US6483215B1 (en) 1999-10-13 2002-11-19 Maxtor Corporation Hybrid air/fluid bearing
JP2002122137A (ja) * 2000-10-10 2002-04-26 Sankyo Seiki Mfg Co Ltd 軸受装置
US6502991B2 (en) 2001-03-14 2003-01-07 The Timken Company Rotary fluid bearing coatings and coining and processes for manufacturing the same
US7249363B2 (en) * 2001-07-17 2007-07-24 Matsushita Electric Industrial Co., Ltd. Spindle motor, information recording and reproducing apparatus having a spindle motor, and manufacturing method of spindle motor
IL145321A0 (en) 2001-09-06 2002-06-30 Micro Tools Ltd Improved dental drill head configuration
JP3828452B2 (ja) * 2002-04-18 2006-10-04 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用いたディスク駆動装置
US7422370B2 (en) * 2002-08-06 2008-09-09 Seagate Technology Llc Hydraulic compensation for magnetically biased fluid dynamic bearing motor
US6841902B2 (en) * 2002-10-07 2005-01-11 Seagate Technology Llc Method and apparatus for minimization of magnetic bias force harmonics in a spindle motor
US7265939B2 (en) * 2003-03-31 2007-09-04 Matsushita Electric Industrial Co., Ltd. Spindle motor and disk drive unit
US7122922B2 (en) * 2003-05-20 2006-10-17 Seagate Technology Llc Base plate for spindle motor
US6920013B2 (en) * 2003-11-07 2005-07-19 Nidec Corporation Disk drive spindle motor with radial inward thrust area annular protruding portion and bearing member communicating passage
DE10361229B4 (de) * 2003-12-24 2012-01-26 Minebea Co., Ltd. Spindelmotor mit Lagersystem
US7956499B2 (en) * 2005-06-02 2011-06-07 Seagate Technology Llc Motor magnetic force attenuator
US7692892B2 (en) * 2006-07-19 2010-04-06 Seagate Technology Llc Two-material base for a data storage system
DE102011101827A1 (de) * 2011-05-17 2012-11-22 Minebea Co., Ltd. Spindelmotor mit einem Bauteil aus Chromstahl
US9410576B2 (en) 2013-12-04 2016-08-09 Us Synthetic Corporation Compact bearing assemblies including superhard bearing surfaces, bearing apparatuses, and methods of use
US10260560B2 (en) 2013-12-04 2019-04-16 Us Synthetic Corporation Compact bearing assemblies including superhard bearing surfaces, bearing apparatuses, and methods of use

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GB1524662A (en) * 1977-03-24 1978-09-13 Univ Southampton Agnetic disc stores
JPS5883552A (ja) * 1981-11-12 1983-05-19 Hitachi Koki Co Ltd 回転機
JPS58142025A (ja) * 1982-02-13 1983-08-23 Toshiba Corp スピンドル装置
JPS5928757A (ja) * 1982-08-11 1984-02-15 Takahashi Yoshiteru 回転多面鏡走査装置
JPS5963024A (ja) * 1982-09-30 1984-04-10 Matsushita Electric Ind Co Ltd 流体軸受シリンダ−装置
JPS5972956A (ja) * 1982-10-18 1984-04-25 Toshiba Corp 光偏向用モ−タ
JPS59204441A (ja) * 1983-05-04 1984-11-19 Canon Inc 軸受
JPS6098213A (ja) * 1983-11-02 1985-06-01 Canon Inc 動圧流体軸受
US4509160A (en) * 1983-12-05 1985-04-02 Eggers Fred S Disc drive assembly
JPS619138A (ja) * 1984-06-21 1986-01-16 Canon Inc 高速回転駆動装置
US4604229A (en) * 1985-03-20 1986-08-05 Ferrofluidics Corporation Electrically conductive ferrofluid compositions and method of preparing and using same
US4726640A (en) * 1985-09-24 1988-02-23 Ricoh Company, Ltd. Optical deflector with a pneumatic and a magnetic bearing
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JPS63100416A (ja) * 1986-10-17 1988-05-02 Ricoh Co Ltd 光偏向装置
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JPS63241516A (ja) * 1987-03-30 1988-10-06 Ebara Corp ポリゴンミラ−
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JPH01200320A (ja) * 1988-02-05 1989-08-11 Hitachi Ltd 回転鏡光偏向器
FR2627313B1 (fr) * 1988-02-12 1994-08-05 Mecanique Magnetique Sa Dispositif de suspension et d'entrainement de disques de memoire d'ordinateur

Also Published As

Publication number Publication date
US4998033A (en) 1991-03-05
EP0392500B1 (de) 1995-03-01
DE69017248T2 (de) 1995-10-26
EP0392500A3 (de) 1991-05-02
EP0392500A2 (de) 1990-10-17
ATE119306T1 (de) 1995-03-15
ES2071696T3 (es) 1995-07-01

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee