KR900010770A - 자성유체 밀봉장치 - Google Patents

자성유체 밀봉장치

Info

Publication number
KR900010770A
KR900010770A KR1019890020621A KR890020621A KR900010770A KR 900010770 A KR900010770 A KR 900010770A KR 1019890020621 A KR1019890020621 A KR 1019890020621A KR 890020621 A KR890020621 A KR 890020621A KR 900010770 A KR900010770 A KR 900010770A
Authority
KR
South Korea
Prior art keywords
sealing device
magnetic fluid
fluid sealing
magnetic
sealing
Prior art date
Application number
KR1019890020621A
Other languages
English (en)
Other versions
KR930003110B1 (ko
Inventor
아츠시 다카하시
Original Assignee
가부시기가이샤 도시바
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 가부시기가이샤 도시바 filed Critical 가부시기가이샤 도시바
Publication of KR900010770A publication Critical patent/KR900010770A/ko
Application granted granted Critical
Publication of KR930003110B1 publication Critical patent/KR930003110B1/ko

Links

Classifications

    • 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
    • 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
    • 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
    • F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Rotational Drive Of Disk (AREA)
KR1019890020621A 1988-12-28 1989-12-28 자성유체 밀봉장치 KR930003110B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63332523A JPH081263B2 (ja) 1988-12-28 1988-12-28 磁性流体シール
JP88-332523 1988-12-28

Publications (2)

Publication Number Publication Date
KR900010770A true KR900010770A (ko) 1990-07-09
KR930003110B1 KR930003110B1 (ko) 1993-04-19

Family

ID=18255877

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890020621A KR930003110B1 (ko) 1988-12-28 1989-12-28 자성유체 밀봉장치

Country Status (3)

Country Link
US (1) US5057952A (ko)
JP (1) JPH081263B2 (ko)
KR (1) KR930003110B1 (ko)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5191811A (en) * 1987-09-04 1993-03-09 Seiko Seiki Kabushiki Kaisha Damper device for a motor
US5267737A (en) * 1992-01-16 1993-12-07 International Business Machines, Corp. Magnetic fluid seal containment shield
WO1997018562A1 (en) * 1995-11-16 1997-05-22 Seagate Technology, Inc. Disc drive hydro bearing lubricant with electrically conductive, non-metallic additive
US6229676B1 (en) 1998-11-13 2001-05-08 International Business Machines Corporation Ferrofluid seal for actuator bearing
JP2001178076A (ja) 1999-10-07 2001-06-29 Nippon Densan Corp 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
US7188840B2 (en) * 2003-07-07 2007-03-13 Zhixin Li Magnetic fluidic seal with improved pressure capacity
US9377054B2 (en) * 2014-05-19 2016-06-28 Seagate Technology Llc Fluid seal for a rotating assembly
JP7133263B2 (ja) * 2017-09-29 2022-09-08 グローブライド株式会社 磁性流体シール装置及び磁性流体シール付き軸受
CN112145698A (zh) * 2020-08-25 2020-12-29 清华大学 永磁体片和导磁片交替分布的磁性液体密封装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53116617U (ko) * 1977-02-25 1978-09-16
US4531846A (en) * 1983-12-27 1985-07-30 Ferrofluidics Corporation Compact ferrofluid seal and bearing assembly
US4575103A (en) * 1984-04-09 1986-03-11 Pedu Alexander A Magnetic seal for magnetic particle clutches and brakes
JPS62177369A (ja) * 1986-01-30 1987-08-04 Tech Res Assoc Highly Reliab Marine Propul Plant 液体用磁性流体軸シ−ル装置
US4989885A (en) * 1988-12-23 1991-02-05 Hitachi Metals, Ltd. Magnetic fluid retainer, and shaft sealer employing same

Also Published As

Publication number Publication date
US5057952A (en) 1991-10-15
JPH02176271A (ja) 1990-07-09
JPH081263B2 (ja) 1996-01-10
KR930003110B1 (ko) 1993-04-19

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Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20010329

Year of fee payment: 9

LAPS Lapse due to unpaid annual fee