JPH0422297B2 - - Google Patents

Info

Publication number
JPH0422297B2
JPH0422297B2 JP62153430A JP15343087A JPH0422297B2 JP H0422297 B2 JPH0422297 B2 JP H0422297B2 JP 62153430 A JP62153430 A JP 62153430A JP 15343087 A JP15343087 A JP 15343087A JP H0422297 B2 JPH0422297 B2 JP H0422297B2
Authority
JP
Japan
Prior art keywords
bearing
motor
magnetic disk
dust
shield
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 - Lifetime
Application number
JP62153430A
Other languages
English (en)
Japanese (ja)
Other versions
JPS63317977A (ja
Inventor
Tomoshi Nakajima
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.)
NAGANO NIPPON DENSAN KK
Original Assignee
NAGANO NIPPON DENSAN KK
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 NAGANO NIPPON DENSAN KK filed Critical NAGANO NIPPON DENSAN KK
Priority to JP62153430A priority Critical patent/JPS63317977A/ja
Priority to US07/094,499 priority patent/US4827168A/en
Publication of JPS63317977A publication Critical patent/JPS63317977A/ja
Publication of JPH0422297B2 publication Critical patent/JPH0422297B2/ja
Granted 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/762—Sealings of ball or roller bearings by means of a fluid
    • 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
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/762—Sealings of ball or roller bearings by means of a fluid
    • F16C33/763—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap
    • F16C33/765—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap by a magnetic field
    • 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
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
    • F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
    • F16C33/7846—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with a gap between the annular disc and the inner race
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/40—Sealings between relatively-moving surfaces by means of fluid
    • F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force
    • 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
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • 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
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/124—Sealing of shafts
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • 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)
  • Rotational Drive Of Disk (AREA)
  • Motor Or Generator Frames (AREA)
JP62153430A 1987-06-22 1987-06-22 磁気ディスク用モ−タの防塵シ−ル構造 Granted JPS63317977A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP62153430A JPS63317977A (ja) 1987-06-22 1987-06-22 磁気ディスク用モ−タの防塵シ−ル構造
US07/094,499 US4827168A (en) 1987-06-22 1987-09-09 Sealing structure in a motor for magnetic discs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62153430A JPS63317977A (ja) 1987-06-22 1987-06-22 磁気ディスク用モ−タの防塵シ−ル構造

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP3309991A Division JPH0648576B2 (ja) 1991-10-28 1991-10-28 スピンドルモータ

Publications (2)

Publication Number Publication Date
JPS63317977A JPS63317977A (ja) 1988-12-26
JPH0422297B2 true JPH0422297B2 (en, 2012) 1992-04-16

Family

ID=15562345

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62153430A Granted JPS63317977A (ja) 1987-06-22 1987-06-22 磁気ディスク用モ−タの防塵シ−ル構造

Country Status (2)

Country Link
US (1) US4827168A (en, 2012)
JP (1) JPS63317977A (en, 2012)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5132856A (en) * 1989-10-13 1992-07-21 Nippon Seiko Kabushiki Kaisha Motor spindle for hard disc device
CA2027225A1 (en) * 1989-10-27 1991-04-28 Donald James Macleod Spindle motor assembly for disc drives
JP2913061B2 (ja) * 1990-03-05 1999-06-28 光洋精工株式会社 真空用玉軸受およびそれを用いたターボ分子ポンプ
US5218256A (en) * 1990-05-31 1993-06-08 Mitsuba Electric Manufacturing Co., Ltd. Motor casing made of resin
US5214326A (en) * 1990-09-01 1993-05-25 Nippon Densan Corporation Spindle motor with magnetic shield for magnetic fluid seal
US5347189A (en) * 1991-09-25 1994-09-13 Nippon Densan Corporation Spindle motor with labyrinth sealed bearing
US5381066A (en) * 1992-02-28 1995-01-10 Nippon Densan Corporation Spindle motor with a sealing member
US5483113A (en) * 1992-06-09 1996-01-09 Matsushita Electric Industrial Co., Ltd. Electric motor for driving a magnetic disk
US5379169A (en) * 1992-09-08 1995-01-03 Nec Corporation Magnetic disk drive spindle motor having plates to shield the motor enclosed space from the oustside
US5633769A (en) * 1994-05-11 1997-05-27 Kabushiki Kaisha Sankyo Seiki Seisakusho Magnetic disc drive device
JP3696398B2 (ja) 1997-04-28 2005-09-14 Ｎｔｎ株式会社 静圧磁気複合軸受およびスピンドル装置
JPH11210771A (ja) * 1998-01-20 1999-08-03 Minebea Co Ltd 複列軸受装置
US6582129B2 (en) * 1998-08-27 2003-06-24 Minebea Kabushiki Kaisha Compound bearing apparatus, and spindle motor and swing arm for hard disk drive means including such bearing apparatus
US6179472B1 (en) * 1998-10-13 2001-01-30 International Business Machines Corporation Ball bearing oil/grease loss containment method
EP2672152B1 (en) * 2011-02-03 2017-10-11 Eagle Industry Co., Ltd. Magnetic fluid seal

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2011192A (en) * 1932-12-09 1935-08-13 Fafnir Bearing Co Bearing
US2929944A (en) * 1956-07-24 1960-03-22 Gen Motors Corp Dynamoelectric machine
SU147646A1 (ru) * 1961-08-17 1961-11-30 П.Н. Луговиков Устройство дл подачи консистентной смазки в подшипниковые узлы качени электродвигателей и дл удалени отработанной смазки
US3183592A (en) * 1964-01-13 1965-05-18 Thiokol Chemical Corp Tool for removing defects from the propellant grain of a solid propellant rocket motor
DE2004167B2 (de) * 1970-01-30 1977-07-07 Schorch GmbH, 4050 Mönchengladbach Wellenabdichtung fuer einen elektromotor mit druckgeschmiertem waelzlager
JPS5691644A (en) * 1979-12-24 1981-07-24 Hitachi Ltd Bearing device for small electric motor
GB2087662B (en) * 1980-10-29 1985-02-13 Pierburg Gmbh & Co Kg Positioning motor
US4703209A (en) * 1985-04-30 1987-10-27 Papst-Motoren Gmbh & Co. Kg Electric motor, especially collectorless d.c. motor, with an outside rotor

Also Published As

Publication number Publication date
US4827168A (en) 1989-05-02
JPS63317977A (ja) 1988-12-26

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Legal Events

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LAPS Cancellation because of no payment of annual fees