JP2001178076A - 流体シールおよびこれを用いたスピンドルモータ、並びにこのスピンドルモータを用いたディスク装置 - Google Patents

流体シールおよびこれを用いたスピンドルモータ、並びにこのスピンドルモータを用いたディスク装置

Info

Publication number
JP2001178076A
JP2001178076A JP2000086042A JP2000086042A JP2001178076A JP 2001178076 A JP2001178076 A JP 2001178076A JP 2000086042 A JP2000086042 A JP 2000086042A JP 2000086042 A JP2000086042 A JP 2000086042A JP 2001178076 A JP2001178076 A JP 2001178076A
Authority
JP
Japan
Prior art keywords
peripheral surface
inner peripheral
fluid seal
annular
fluid
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.)
Withdrawn
Application number
JP2000086042A
Other languages
English (en)
Japanese (ja)
Other versions
JP2001178076A5 (https=
Inventor
Shigeji Sumi
茂治 角
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.)
Nidec Corp
Original Assignee
Nidec 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 Nidec Corp filed Critical Nidec Corp
Priority to JP2000086042A priority Critical patent/JP2001178076A/ja
Priority to US09/680,231 priority patent/US6671125B1/en
Publication of JP2001178076A publication Critical patent/JP2001178076A/ja
Publication of JP2001178076A5 publication Critical patent/JP2001178076A5/ja
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball 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
    • 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
    • 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
    • G11B19/2018—Incorporating means for passive damping of vibration, either in the turntable, motor or mounting
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
    • G11B33/1446—Reducing contamination, e.g. by dust, debris
    • G11B33/1466—Reducing contamination, e.g. by dust, debris sealing gaskets
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
    • G11B33/1446—Reducing contamination, e.g. by dust, debris
    • G11B33/1473—Reducing contamination, e.g. by dust, debris of/from 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
    • F16C2370/00—Apparatus relating to physics, e.g. instruments
    • F16C2370/12—Hard disk drives or the like
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Sealing Of Bearings (AREA)
  • Motor Or Generator Frames (AREA)
JP2000086042A 1999-10-07 2000-03-27 流体シールおよびこれを用いたスピンドルモータ、並びにこのスピンドルモータを用いたディスク装置 Withdrawn JP2001178076A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2000086042A JP2001178076A (ja) 1999-10-07 2000-03-27 流体シールおよびこれを用いたスピンドルモータ、並びにこのスピンドルモータを用いたディスク装置
US09/680,231 US6671125B1 (en) 1999-10-07 2000-10-06 Fluid seal and bearing with same

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP11-286735 1999-10-07
JP28673599 1999-10-07
JP2000086042A JP2001178076A (ja) 1999-10-07 2000-03-27 流体シールおよびこれを用いたスピンドルモータ、並びにこのスピンドルモータを用いたディスク装置

Publications (2)

Publication Number Publication Date
JP2001178076A true JP2001178076A (ja) 2001-06-29
JP2001178076A5 JP2001178076A5 (https=) 2007-02-22

Family

ID=26556429

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000086042A Withdrawn JP2001178076A (ja) 1999-10-07 2000-03-27 流体シールおよびこれを用いたスピンドルモータ、並びにこのスピンドルモータを用いたディスク装置

Country Status (2)

Country Link
US (1) US6671125B1 (https=)
JP (1) JP2001178076A (https=)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003028386A (ja) * 2001-07-12 2003-01-29 Matsushita Electric Ind Co Ltd 液体飛散防止機構及び部品装着装置
WO2003104689A1 (ja) * 2002-06-11 2003-12-18 独立行政法人物質・材料研究機構 磁性流体シール回転軸機構
JP2010260043A (ja) * 2009-05-04 2010-11-18 Samsung Electro-Mechanics Co Ltd 線形振動装置
JP2012005296A (ja) * 2010-06-18 2012-01-05 Nidec Seimitsu Corp ギアードモータ
JP2012023965A (ja) * 2010-07-20 2012-02-09 Globeride Inc 魚釣用リール
JP2015096771A (ja) * 2014-12-26 2015-05-21 サムスン電機ジャパンアドバンスドテクノロジー株式会社 ハードディスク装置用スピンドルモータ
JP2015137723A (ja) * 2014-01-23 2015-07-30 光洋シーリングテクノ株式会社 密封装置
CN108599441A (zh) * 2018-07-06 2018-09-28 华北理工大学 一种电动机转子结构
US10113649B2 (en) 2015-07-31 2018-10-30 Shimano Inc. Magnetic seal device and fishing reel including the seal device
JP2020097959A (ja) * 2018-12-17 2020-06-25 ファナック株式会社 シール構造

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002266871A (ja) * 2001-03-05 2002-09-18 Minebea Co Ltd モータ
US6961212B1 (en) * 2001-04-30 2005-11-01 Western Digital Technologies, Inc. Shock isolation bearings and travel limit gaps in a spindle motor and disk drive using the same
US7188840B2 (en) * 2003-07-07 2007-03-13 Zhixin Li Magnetic fluidic seal with improved pressure capacity
US7675210B2 (en) * 2005-03-11 2010-03-09 Panasonic Corporation Hydrodynamic bearing and method for manufacturing the same, and spindle motor and method for manufacturing the same
US8033731B2 (en) 2007-10-17 2011-10-11 Seagate Technology Llc Fluid dynamic bearing motor having molded plastic
US8687317B1 (en) * 2012-09-25 2014-04-01 Nidec Corporation Spindle motor and disk drive apparatus
US9156310B2 (en) * 2013-01-11 2015-10-13 Siemens Industry, Inc Controlled lubricant volume seal housing
US9377054B2 (en) 2014-05-19 2016-06-28 Seagate Technology Llc Fluid seal for a rotating assembly
CN107842613B (zh) * 2017-12-13 2019-04-02 广西科技大学 一种弧形阶梯式磁流体密封装置
CN111799917B (zh) * 2019-04-09 2023-04-28 博泽沃尔兹堡汽车零部件有限公司 具有马达壳体的电动马达
CN117386818A (zh) * 2023-11-13 2024-01-12 太原科技大学 一种台阶塔形式极齿磁性液体密封装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4407508A (en) * 1982-12-16 1983-10-04 Ferrofluidics Corporation Single-pole-piece ferrofluid seal apparatus and exclusion seal system
JPH081263B2 (ja) 1988-12-28 1996-01-10 株式会社東芝 磁性流体シール
US5051853A (en) 1989-04-26 1991-09-24 Nippon Seiko Kabushiki Kaisha Magnetic disc device
US5325006A (en) 1990-04-27 1994-06-28 Hitachi, Ltd. Sealed magnetic fluid bearing for polygon mirror drive motor
US5267737A (en) * 1992-01-16 1993-12-07 International Business Machines, Corp. Magnetic fluid seal containment shield
US5303935A (en) 1992-02-03 1994-04-19 Saksun Holdings Limited Fluid seal
US5596235A (en) * 1993-02-22 1997-01-21 Nidec Corporation Spindle motor with seal structure
JPH07182770A (ja) * 1993-12-21 1995-07-21 Toshiba Corp 磁気ディスク装置およびその組み立て方法
US5675199A (en) 1994-05-17 1997-10-07 Sankyo Seiki Mfg. Co., Ltd. Bearing device with a primary and secondary magnetic fluid sealing mechanism
JP3351111B2 (ja) * 1994-08-08 2002-11-25 松下電器産業株式会社 ブラシレスモータ
US5880545A (en) * 1995-03-22 1999-03-09 Nidec Corporation Spindle motor with bearing system having fluid sealing and leakage prevention
KR970076685A (ko) * 1996-05-29 1997-12-12 이형도 래버린스 실을 일체로 갖는 모터용 허브

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003028386A (ja) * 2001-07-12 2003-01-29 Matsushita Electric Ind Co Ltd 液体飛散防止機構及び部品装着装置
WO2003104689A1 (ja) * 2002-06-11 2003-12-18 独立行政法人物質・材料研究機構 磁性流体シール回転軸機構
JP2010260043A (ja) * 2009-05-04 2010-11-18 Samsung Electro-Mechanics Co Ltd 線形振動装置
JP2012005296A (ja) * 2010-06-18 2012-01-05 Nidec Seimitsu Corp ギアードモータ
JP2012023965A (ja) * 2010-07-20 2012-02-09 Globeride Inc 魚釣用リール
JP2015137723A (ja) * 2014-01-23 2015-07-30 光洋シーリングテクノ株式会社 密封装置
JP2015096771A (ja) * 2014-12-26 2015-05-21 サムスン電機ジャパンアドバンスドテクノロジー株式会社 ハードディスク装置用スピンドルモータ
US10113649B2 (en) 2015-07-31 2018-10-30 Shimano Inc. Magnetic seal device and fishing reel including the seal device
CN108599441A (zh) * 2018-07-06 2018-09-28 华北理工大学 一种电动机转子结构
CN108599441B (zh) * 2018-07-06 2023-06-30 华北理工大学 一种电动机转子结构
JP2020097959A (ja) * 2018-12-17 2020-06-25 ファナック株式会社 シール構造
US11306823B2 (en) 2018-12-17 2022-04-19 Fanuc Corporation Sealing structure

Also Published As

Publication number Publication date
US6671125B1 (en) 2003-12-30

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